JPH08333101A - Oxygen generator - Google Patents

Abstract

PURPOSE: To provide an oxygen generator capable of surely performing the thermal decomposition of a whole candle and also lowering the temperature of a housing by supplying oxygen generated by the thermal decomposition of an oxygen generating material induced by an ignition to the outside through a gap between a cylindrical body and a heat insulating material, and through the heat insulating material. CONSTITUTION: Since a ring-shaped airtight space 39 is formed between a cylindrical body 37 and a housing 40 in this oxygen generator, and a candle 32 is covered by a copper cylindrical body 37 which functions also as a heat insulating material, the quantity of heat conveyed to the housing 40 is extremely small. Therefore, the whole candle is heated uniformly by widely lowering the temperature of the housing 40, reducing the heat transmitted from the candle 32 to the space 39 as small as possible by means of the cylindrical body 37, and further effectively supplying the heat to the whole part of the candle 32 inside. Thus, from right hand side, the candle 32 generates oxygen by performing the thermal decomposition successively without an interruption in its halfway and the whole candle 32 is thermally decomposed to convert NaClO3 into NaCl. In this way, the prescribed amount of oxygen flow can be supplied to the outside following a prescribed pattern.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an oxygen generator.

[0002]

2. Description of the Related Art FIG. 30 shows a conventional oxygen generator, which is designated by 1 as a whole and has a substantially columnar shape, and has an axial length of about 30 cm and a diameter. Is about 8 cm. In the figure, the oxygen generating agent 2 is called a "candle", but this candle 2 is formed in a substantially columnar shape as a whole. This is the ignition charge part 3, starting from the right side in the figure. The agent part 4 and the first and second main oxygen generating agent parts 5a and 5b are included. The ignition charge part 3, the initiator part 4 and the first and second main oxygen generating parts 5a and 5b are mainly composed of sodium chlorate NaClO ₃ and iron Fe (compressed and powdered). The component ratio is changed so that the oxygen flow rate after ignition has a predetermined time pattern. That is, as shown in FIG. 34, the horizontal axis represents time and the vertical axis represents the oxygen flow rate. Initially, a large amount of oxygen is generated, and thereafter, the flow rate is gradually reduced as the thermal decomposition progresses. ,
This is because, for example, when an accident occurs in a high altitude where oxygen is rare with a rocket or an airplane, a large amount of oxygen is required at first, and the amount of oxygen required decreases as one enters the low altitude region. I am trying. The ignition charge part 3, the initiator part 4, and the first and second main oxygen generating parts 5a, 5
In the whole candle 2 composed of b, a cup-shaped candle holder 6 made of metal is externally fitted on the ignition device section F side, and a candle support 7 also made of metal is applied to the oxygen supply device S side. There is. Further, a heat insulating material 8 made of, for example, silica is brought into contact with the end surface of the candle holder 6, and similarly, for example, "popcalite" (generally an oxidation catalyst in a chemical plant is used between the candle support 7 and the oxygen supply device S). A filter 9 made of copper oxide CuO and manganese trioxide Mn ₂ O ₃ ) is used as a main component. Further, a heat insulating material 10 made of silica is cylindrically fitted around the outer circumference of the candle 2, and the above-mentioned candle holder 6 is embedded in the heat insulating material 10. In some cases, the heat insulating material 10 has a double structure, and the candle holder 6 is interposed between them. Therefore, the cross section of the candle holder 6 portion is as shown in FIG.

A candle 2 and a heat insulating material 1 fitted on the candle 2.
0, the candle holder 6 and the candle support 7 arranged on both sides thereof, and the heat insulating material 8 and the filter 9 arranged on both sides thereof as a whole have a cylindrical shape as shown in the drawing. , Covered with a housing 11 made of, for example, stainless steel.

An opening is formed in the center of the bottom surface of the candle holder 6, and a holding body 14 holding a detonator 18 is welded and fixed around the opening, and a screw is cut on the outer circumference. , A cylindrical body 15 for holding this and the heat insulating material 8
The inner circumference of is threadedly engaged. This is fitted into the right end opening of the housing 11 and is welded and fixed to the center hole of the cover 12 made of metal, and the outside of this center hole abuts the cylinder body 16 holding the hammer piston 17, and the inside thereof. Are screwed to the holder 14. The hammer piston 17 is urged to the left in the figure by a spring 19, and its end projects from the cylindrical body 16 and a firing pin 20 is inserted through a hole formed in the cylindrical body 16.

As described above, the ignition device F according to the conventional example is composed of the hammer piston 17, the spring 19, the firing pin 20, the holder 14, the cylinders 15 and 16, the detonator 18, and the like.

At the left end opening of the housing 11, a cover 21 also made of metal is attached in pressure contact with the filter 9, to which a relief valve 22 and an oxygen supply device S are attached.
Is attached. The relief valve 22 is composed of a valve body 26 arranged in the casing and a spring 25 for urging the valve body 26 to the right in the figure. Further, the oxygen supply device S has a metal fitting 23 having a substantially L-shaped cross section attached to the opening of the cover 21, and externally attached lead-out pipes 24a and 24b for supplying generated oxygen to humans. . A valve body 27, which is biased to the right by a spring 28, is provided in the metal fitting 23, which constitutes a check valve.

The conventional oxygen generator 1 is constructed as described above, and its operation will be described below.

When the knob portion 20a of the firing pin 20 is pulled out from the through hole formed at the end of the hammer piston 17, the hammer piston 17 has a spring 19
The spring 17 moves vigorously to the left, and the projection 17a formed at the tip end thereof collides with the detonator 18. As a result, a spark is emitted, and the ignition charge part 3 is ignited first.
Generates heat when it oxidizes with Fe ₂ O ₃ , which causes N
aClO ₃ decomposes into NaCl (salt) and oxygen.
The generated oxygen is directed radially outward from the bottom surface of the candle holder 6 as indicated by an arrow G in FIG.
Through the opening 7a formed in the outer peripheral portion of the candle support 7, and further dust and odor are removed by the filter 9 to make it tasteless and clean, and connect the outlet pipes 24a and 24b from the oxygen supply device S. Supplied outside the street. At this time, as shown in FIG. 33, the valve body 27 is opened against the spring force of the spring 28 by the generated oxygen pressure. Further, the thermal decomposition of the candle 2 shown in FIG. 30 proceeds, and the above-mentioned thermal decomposition of the adjacent initiator portion 4 is performed. However, after the ignition charge portion 3 is ignited, the thermal decomposition of the initiator portion 4 is high. At this stage, the oxygen flow rate is the highest at the start time in FIG. 34. Then, when thermal decomposition progresses in the first and second main oxygen generator parts 5a and 5b shown in FIG. 30, similarly, NaClO ₃ is decomposed and oxygen is generated at a flow rate of the pattern shown in FIG. 10, through the opening 7a of the candle support 7 (as clearly shown in FIG. 32), the filter 9 and the oxygen supply device S to be supplied to the outside.

As described above, the candle 2 is thermally decomposed, but if the whole is completely thermally decomposed, N
Only aCl, that is, salt remains, but in some cases, the whole is not completely decomposed, and as shown in FIG. 33, the decomposition stops in the middle m of the candle 2 and no oxygen is generated thereafter. There are cases. This is very dangerous depending on the usage. For example, it is extremely dangerous for a passenger on an aircraft to stop the supply of oxygen from the oxygen generator 1 even though oxygen is needed in an accident. The relief valve 22 opens the valve body 26 when the pressure inside the oxygen generator 1 becomes abnormally high, and releases this high pressure to the outside through the hole h to prevent an accident.

Further, although the oxygen generated from the candle 2 is at a high temperature, it lowers the temperature when passing through the heat insulating material 10,
Furthermore, the temperature of the oxygen that is lowered by the filter 9 and discharged from the outlet pipes 24a and 24b is sufficiently lowered so that it does not adversely affect the human body. However, the housing 11 is a heat insulating material 1.
Since it is in contact with 0, the heat of the hot oxygen passing therethrough is transmitted and the temperature rises, but the thickness of the heat insulating material 10 is determined to such an extent that it does not adversely affect the outside. Of course, housing 1
The lower the temperature of 1, the better. That is, the function of the heat insulating material 10 is to increase the temperature of the candle 2 as much as possible without transmitting the heat generated on the pyrolysis surface of the candle 2 to the housing 11.

In PCT WO93 / 17962, both ends of a tubular heat insulating material filled with an oxygen generating agent are supported by supporting members made of metal, and one side of the supporting member is provided with an ignition means and the other side thereof. An oxygen generator is disclosed in which an oxygen supply means is provided, and the heat insulating material and the support member are housed in a cylindrical housing made of metal. In this oxygen generator, the supporting member on the ignition means side is called a spatter shield, and the supporting member on the oxygen supply means side is an interior core locator.
Partition (interior core loc
Although it is referred to as an "ator partition", it performs the same operation as the above-mentioned conventional example. Oxygen generator,
That is, the outer circumference of the candle is covered with heat insulating material,
This ignition means side is held by a sputter shield.
However, a space is shown between the outer housing and the heat insulating material, and in this publication, this space is closely packed with the heat insulating material, or is filled only to the extent shown. It is clear that in this device, the hot oxygen generated from the candle passes between the spatter shield, which is the supporting member on the ignition means side, and the heat insulating material, and is not described in the specification. It is supplied to the outside through the space between the housing and the housing and the hole formed in the interior core locator partition which is the other supporting member. Therefore, it is clear that the hot oxygen passes through the space between the housing and the heat insulating material, and the temperature of the housing becomes high as described in the conventional example.

Furthermore, oxygen is considerably cooled by passing oxygen between the support member on the ignition means side and the heat insulating material, but when passing near the oxygen generating agent on the oxygen supply means side, it is considerably cooled. It is cooled (it is also cooled by heating the housing). Therefore, the oxygen generating agent on the oxygen supply side is lower than the heating temperature of the oxygen generating agent on the ignition means side. Therefore, as described above, in some cases, the end of the oxygen generating agent on the ignition means side may not be thermally decomposed.

[0013]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and provides an oxygen generator capable of reliably performing the thermal decomposition of the entire candle and reducing the temperature of the housing as much as possible. The purpose is to provide.

[0014]

The above-mentioned objects are defined in claim 1.
According to the invention, both ends of the cylindrical heat insulating material filled with the oxygen generating agent are supported by the supporting members made of metal, and the igniting means is provided on one side of the supporting member and the oxygen supplying means is provided on the other side. Provided, in the oxygen generator in which the heat insulating material and the support member are housed in a cylindrical housing made of metal, the outer periphery of the cylindrical heat insulating material is corrosion resistant to the oxygen generating agent,
The oxygen generating agent is covered with a tubular body made of a heat-resistant material that is inert to reaction, and a tubular space is formed between the tubular body and the tubular housing. And oxygen generated by the thermal decomposition of the oxygen is supplied to the outside through the gap between the cylindrical body and the heat insulating material and the heat insulating material and through the oxygen supply means. To be done.

Therefore, in the invention of claim 1, the thermal decomposition of the oxygen generating agent is started by the ignition means, but the high temperature oxygen generated at this time is resistant to corrosion on the outer peripheral surface of the oxygen generating agent and the oxygen generating agent. Exhaust from the oxygen supply means to the outside through the space between the cylinder and the heat insulating material, that is, between the cylinder and the heat insulating material and between the heat insulating material and the heat insulating material. To be done. The temperature is low enough for human use. In other words, the tubular body forms an annular space with the housing and acts as a shield against the oxygen generating agent.
Also, the oxygen generating agent thermally decomposes from the ignition means side, but since the cylinder acts as a heat shield, this heat is immediately transmitted to the oxygen supply means side over the entire inside of the cylinder, Therefore, the oxygen generating agent inside this is uniformly heated and thermally decomposed from the ignition means side, but this surely continues, and the oxygen generating agent stops the thermal decomposition on the way and the planned oxygen supply It is possible to surely eliminate the risk that it will not be possible to perform the above, and also to provide a housing made of a metal and a cylindrical body made of a material that is resistant to corrosion and is inert to the oxygen generator and is heat-resistant. Since there is a space containing air between them, air is a kind of so-called heat insulating material, and is also a cylindrical body made of a material which is corrosion resistant, reaction inert and heat resistant to the oxygen generating agent. Is a conventional oxygen generator directly through the heat insulating material The heat of pyrolysis prevents be transmitted to the housing, for transmitting to the housing via an air layer when said, the temperature of the housing can be reduced by a large margin compared with the conventional. Further, the heat insulating material can be used in a smaller amount than in the past, so that the cost can be reduced and the weight as a whole can be reduced.

According to the second aspect of the present invention, the two ends of the tubular heat insulating material filled with the oxygen generating agent are supported by the supporting members made of metal, and the supporting member is made of metal. An ignition means is provided on one side, and an oxygen supply means is provided on the other side, and the heat insulating material and the support member are corrosion resistant to the oxygen generating agent,
In an oxygen generator housed in a cylindrical housing made of a reaction-inert and heat-resistant material, in the supporting member, the supporting member on the ignition means side has a cylindrical shape having a bottom portion on the ignition means side. The oxygen generating agent is extended through the heat insulating material so as to cover the entire oxygen generating agent, and an airtight space is formed between the oxygen generating agent and the housing. Oxygen generated by thermal decomposition of the oxygen generating agent by the operation of the ignition means passes through a gap between the supporting member on the ignition means side and the heat insulating material and the heat insulating material, and is externally supplied via the oxygen supply means. It is achieved by an oxygen generator characterized by being supplied.

According to the second aspect of the present invention, the thermal decomposition of the oxygen generating agent is started by the ignition means. The high temperature oxygen generated at this time is generated between the support member and the heat insulating material on the ignition means side and the heat insulating material ( It is breathable) and is discharged to the outside from the oxygen supply means. The temperature is low enough for human use. Since there is a space containing air between the housing made of metal and the supporting member on the ignition means side, air is a kind of so-called heat insulating material, and is also resistant to corrosion and reaction with the oxygen generating agent. The support member made of an inert and heat-resistant material prevents the heat generated by the thermal decomposition of the oxygen generating agent from being directly transferred to the housing through a heat insulating material as in the conventional case, and so-called an air layer. To transmit to the housing,
The temperature of the housing can be lowered much more than before. Further, the heat insulating material can be used in a smaller amount than in the past, so that the cost can be reduced and the weight as a whole can be reduced.

Further, according to the second aspect of the present invention, since the heat taken by the housing is added to the oxygen generating agent inside, the temperature as a whole rises as compared with the conventional one, and the thermal decomposition is interrupted midway. There is no such thing.

Further, according to the invention of claim 4, both ends of the cylindrical heat insulating material filled with the oxygen generating agent are supported by the supporting members made of metal, and In an oxygen generator in which ignition means is provided on one side and oxygen supply means is provided on the other side, and the heat insulating material and the support member are housed in a cylindrical housing made of metal, the outer circumference of the cylindrical heat insulating material is The tube is covered with a tube made of a heat-resistant material that is corrosion-resistant, reaction-inert with respect to the oxygen generating agent, and a plurality of cuts are made in the tube to form a section, and the section is formed into the tube. Is bent into a cylindrical space formed between the housing and the housing to form a fin for heat dissipation, and oxygen generated by thermal decomposition of the oxygen generating agent by operation of the ignition means is generated in the cylindrical body and the heat insulating material. The oxygen supply means through the gap between It is achieved by the oxygen generator, which is characterized in that so as to supply to the outside.

According to the fourth aspect of the present invention, a plurality of cuts are made in the cylindrical body that covers the heat insulating material to form a segment, and the segment is formed into a tubular space formed between the tubular housing and the tubular housing. Since the fins are bent to radiate heat, the heat of oxygen passing through the tubular body, the heat insulating material, and the heat insulating material is further cooled by the fins, so that the temperature of the supplied oxygen can be sufficiently lowered. Therefore, oxygen can be supplied at a temperature that is harmless to humans. Further, since the section for forming the fin is a part of the cylindrical body, its configuration is simple. Also, since the section is bent into an annular space, the section of the tubular body that becomes the opening becomes an opening, and the generated oxygen may flow into the annular space through this opening, but only a small amount of oxygen exists. When flowing into the space and the space reaches a predetermined pressure by oxygen, the generated oxygen does not flow out into this space. Therefore, after a predetermined amount of oxygen flows out, the space acts as a heat insulating material, so that the same effect as the invention of claim 1 and the invention of claim 3 is obtained, that is, the housing 40 does not become hot and the generated oxygen is generated. Is transferred to the oxygen generating agent 32 inside the oxygen generating device, so that the oxygen generating agent 32 is heated and can be completely thermally decomposed.

Further, according to the invention of claim 5, both ends of the cylindrical heat insulating material filled with the oxygen generating agent are supported by the supporting members made of metal, and In an oxygen generator in which ignition means is provided on one side and oxygen supply means is provided on the other side, and the heat insulating material and the support member are housed in a cylindrical housing made of metal, an opening on the ignition means side of the housing is provided. A lid member for covering is provided, and the supporting member on the ignition means side of the both supporting members is made of a material that is resistant to corrosion, reaction inertness and heat resistance with respect to the oxygen generating agent, and has a bottom portion on the ignition means side. And has a cylindrical shape that extends toward the oxygen supply means side so as to cover the oxygen generating agent through the heat insulating material, and forms a passage with the housing by a passage forming member. By the operation of the means After oxygen generated by thermal decomposition of the serial oxygen generating agent through the gap and the heat insulating material and the heat insulating member and the support member of said ignition means side, in the passageway,
An oxygen generator characterized in that the oxygen generator is adapted to supply the gas to the outside through the oxygen supply means after finally passing through the outermost passage which is the passage closest to the housing.
Achieved by

In the invention of claim 5, the pyrolysis of the oxygen generating agent is started by the ignition means, and the high temperature oxygen generated at this time is generated between the support member and the heat insulating material on the ignition means side and the heat insulating material ( (Which is breathable) then flows axially through the passage formed by the passage forming member and lastly passes through the outermost passage portion of this passage closest to the housing, i.e. the outermost passage portion is oxygenated. When passing
Since the oxygen, which was at a high temperature, is sufficiently cooled, even if the heat of oxygen is transferred to the housing, the temperature of the housing is much lower than in the conventional case. Therefore, the outer circumference of the oxygen generator does not become hot. Further, the heat insulating material can be used in a smaller amount than in the past, so that the cost can be reduced and the weight as a whole can be reduced. Further, since the high-temperature oxygen that is not sufficiently cooled flows in the vicinity of the oxygen generating agent inside the oxygen generator, the heat of the high temperature oxygen is transferred to the oxygen generating agent and the oxygen generating agent is uniformly heated. Therefore, since the thermal decomposition of the oxygen generating agent started from the ignition means side can be surely continued, the risk that the thermal decomposition is stopped midway and the planned oxygen supply cannot be performed is surely eliminated. You can

According to the seventeenth aspect of the present invention, the two ends of the tubular heat insulating material filled with the oxygen generating agent are resistant to corrosion and do not react with the oxygen generating agent. A cylindrical housing which is supported by a supporting member made of an active and heat-resistant material, an ignition means is provided on one side of the supporting member, and an oxygen supply means is provided on the other side, and the heat insulating material and the supporting member are made of metal. The oxygen generator is housed in an oxygen generator having an alkali metal chlorate or an alkali metal perchlorate as a main component, and the oxygen generator has a thermal conductivity of 30.
This is achieved by an oxygen generator characterized in that a small piece made of a material of W / (m · K) or more is added.

Therefore, in the invention of claim 17, the oxygen generator is made of a material having a thermal conductivity of 30 W / (m · K) or more, for example, a material having a higher thermal conductivity than the oxygen generator such as stainless steel. Due to the addition of small pieces, the whole is completely pyrolyzed. That is, this oxygen generating agent undergoes thermal decomposition sequentially from the ignition side, but when it reaches a layer where the thermal decomposition rate is relatively slow, conventionally, for this reason, the oxygen generating agent adjacent to this is generated. Although there was a small amount of heat to thermally decompose and there was a case where it was cut off, this small piece made of stainless steel, for example, can efficiently transfer heat to the undecomposed layer, so that thermal decomposition from a higher temperature than before is possible. Therefore, after that, the thermal decomposition is not interrupted, and the entire oxygen generating agent is completely thermally decomposed. In addition, the pieces, for example made of stainless steel, allow the bonding between the compositions. That is, it also functions as a binder. PCTW for example
O92-18423 also discloses an oxygen generator, but in this device, a glass powder, a glass fiber, a ceramic fiber, and a steel wool (s) are used as a binder.
teal ool) or mixtures thereof. However, with the exception of steel wool, these only perform their original binder function, that is, binding function, and the heat generated in the oxygen generator becomes small, especially in the slow thermal decomposition area, and it does not decompose and may remain undecomposed. There is. In the present invention, even in such a case, the heat can be reliably transferred to the undecomposed adjacent oxygen generating agent, and the temperature can be increased to a temperature higher than that in the conventional case to be thermally decomposed. Therefore, the entire oxygen generating agent can be completely thermally decomposed. This kind of action and effect is P
It cannot be obtained with the binder described in CTWO92-184235, and no such effect is disclosed. Steel wool seems to have heat transfer properties, but since it is itself fibrous and entangled, it has poor dispersibility, and it is difficult to mix it uniformly with each composition (powder) of the oxygen generator. There is. However, the aggregates of small pieces are dispersible and flowable, and are easily mixed evenly in each composition, so that heat conduction is uniform, and their quantitative handling is much easier than that of wool.

Further, according to the present invention, the temperature is not increased only by burning the iron powder as in the prior art, but the thermal conductivity is 30 W / (m · K) or more, which is higher than that of the oxygen generating agent. Since the heat is transferred to the undecomposed area by the small pieces having a certain rate, the amount of heat generated by the oxygen generating agent toward the outside can be made small, and the temperature of the housing can be kept lower than before. .

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION In the oxygen generator of the present invention, a space containing air serving as a heat insulating material exists between the supporting member or the cylinder on the ignition means side and the housing. Even if high-temperature oxygen passes between the material and the support member on the ignition means side, the space containing air acts as a heat insulating material, and the heat of oxygen may heat the housing, that is, the outer circumference of the oxygen generator. In addition, since oxygen passes through the inside of the space containing air, the heat of oxygen is transferred to the oxygen generating agent inside the oxygen generating device, and the oxygen generating agent is uniformly heated. Since the thermal decomposition of (2) is surely continued, it is possible to surely eliminate the risk that the thermal decomposition stops midway and the planned oxygen supply cannot be performed.

Further, if a plurality of heat-radiating fins are provided so as to project into the space containing air, the oxygen passing through the heat insulating material and the gap between the heat insulating material and the supporting member on the ignition means side is further improved.
Since the heat that is cooled and that the cylindrical member that covers the heat insulating material or the supporting member on the ignition means side is radiated by the heat radiation fins,
The housing that covers the outside of the tubular body or the support member on the ignition means side does not become hotter. It should be noted that the heat radiation fins are densely provided on a portion of the tubular member that covers the heat insulating material or the supporting member on the ignition means side that has a relatively high temperature, and on the tubular body that covers the thermal insulating material or on the supporting member on the ignition means side. If it is formed so as to be sparse in the part where the temperature is relatively low, it is possible to efficiently dissipate heat without increasing the weight of the oxygen generator itself, and thus to support the cylinder or the ignition means side. It is also possible to equalize the surface temperature of the housing provided on the outer periphery of the member. Further, in a space containing air, the cylindrical body covering the heat insulating material or the portion of the supporting member on the ignition means side having a relatively high temperature has a high density, and the cylindrical body covering the heat insulating material or the ignition means side is covered. Oxygen that passes through the heat insulating material and the gap between the heat insulating material and the supporting member on the ignition means side at a low density in the portion of the supporting member where the temperature is relatively low is filled with wool made of metal,
It can be further cooled and the surface temperature of the housing provided on the outer periphery of the support member on the side of the cylinder or the ignition means can be leveled.

Further, in the oxygen generator of the present invention, a plurality of incisions are made in the cylindrical body covering the heat insulating material to form a section,
Moreover, since this section was bent into a cylindrical space formed between the cylindrical housing and the cylindrical housing to form a fin for heat dissipation, even if the oxygen generating agent has the same weight as in the first embodiment, The oxygen is further cooled by the fins for heat dissipation. Also,
After the oxygen generated in the initial stage is filled in the annular space,
Since this space serves as a heat insulating material, the heat of oxygen generated thereafter is not transferred to the housing but is transferred to the inside of the oxygen generator, that is, the oxygen generator is heated, so the oxygen generator is completely decomposed by heat. Therefore, oxygen can be generated with a predetermined temporal flow pattern.

Further, in the oxygen generator of the present invention, a passage forming member which forms a passage for guiding the flow in the axial direction is provided between the supporting member on the ignition means side and the housing, and the generated oxygen passes through the passage. When passing through the outermost passage part that is closest to the housing last, that is, when passing through the outermost passage part, the oxygen that was already hot is cooled, so that the heat of oxygen is transferred to the housing. Even if it is transmitted, the heat of oxygen does not heat the housing, that is, the outer circumference of the oxygen generator. Oxygen is the inner side of the passage formed by the passage forming member,
That is, when passing through the oxygen generating agent side, it is still not sufficiently cooled and is at a high temperature, so the heat of the high temperature oxygen is transferred to the hand oxygen generating agent and the oxygen generating agent is uniformly heated. Since the thermal decomposition from the ignition means side continues reliably,
It is possible to surely eliminate the risk that the thermal decomposition is stopped on the way and the planned oxygen supply cannot be performed.

Further, in the oxygen generator of the present invention, by adding a small piece made of a material having a thermal conductivity of 30 W / (m · K) or higher and a thermal conductivity higher than that of the oxygen generator to the oxygen generator, The heat can be efficiently transferred to the layer that has a small amount of heat generation and may be undecomposed, such as the layer that has a low decomposition rate and is not easily discontinuous due to unstable thermal decomposition or the last layer when viewed from the ignition side. Therefore, the thermal decomposition is not interrupted, and the entire oxygen generating agent can be completely thermally decomposed.

Furthermore, since the oxygen generating agent contains calcium peroxide, it is harmless to the human body and does not greatly limit handling or disposal during manufacturing.

Further, as the ignition means of the oxygen generator of the present invention, an ignition in which a cylindrical body in which a spring for urging a hammer piston is provided is integrally formed by caulking on a detonator supporting member holding a detonator. By using the means, it is possible to reduce the number of parts as compared with the related art, and therefore it is possible to obtain an effect that the structure itself of the ignition means is simplified.

Further, by adopting an embodiment in which an annular sealing member is provided at the end of the valve body of the oxygen supply means, even if the oxygen supply means is easily disassembled for easy maintenance, the valve is A reliable seal can be provided when the body is seated on the valve seat.

Further, since the second lid member and the support member on the oxygen supply means side are connected to each other, even if rough handling or vibration is applied, these two members are in the axial direction of the oxygen generator. The movement of the particles is mutually regulated, and it is possible to prevent the particles forming the filter filled between these members from becoming small due to friction due to vibration,
Therefore, since no void is formed in the filter, the generated oxygen can be sufficiently odorlessly cleaned and supplied to the outside.

[0035]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An oxygen generator according to each embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, the oxygen generator of the first embodiment is shown as a whole by 31, but the candle 32 as the oxygen generator is the ignition charge portion 3 as in the conventional case.
3, the initiator portion 34 and the main portions 35a and 35b, which are substantially cylindrical in shape as in the conventional case. A cylindrical heat insulating material 36 made of silica or having a trade name of "Jura blanket" (chemical components: Al ₂ O ₃ 48%, SiO ₂ 52% -generally ceramic fiber) is closely adhered to this outer peripheral portion. The tubular body 37 made of copper according to the present invention is attached to the outer peripheral surface of the tubular body 37. According to the present embodiment, this thickness is as thin as 0.1 mm, and even if the outer peripheral surface of the heat insulating material 36 has some irregularities, it can be wound tightly and easily. A candle holder 38 made of a substantially cup-shaped metal is fitted on the ignition device F ′ side, and a center hole 38a is formed at the bottom of the candle holder 38. One end of the detonator holding member 44 is welded, and its outer periphery is screwed to the outer cylinder body 45. It is also welded around the central hole of the cover 42 made of metal, and the cylindrical body 4 holding the hammer piston 48 on it is welded.
6 is screwed and fixed. Detonator 4 in detonator holding member 44
3 are attached and face each other, hammer piston 4
8 is biased to the left in the figure by a spring 47. Reference numeral 41 is a heat insulating material.

In the present embodiment, the label 49 indicating the handling precautions is attached via the pin P, and the firing pin is inserted in the direction perpendicular to this, similarly to the conventional example (not shown). . At the time of use, the label 49 may be removed together with the pin P, and then the firing pin may be removed from the end of the hammer piston 48 as in the conventional case.

On the oxygen supply device S'side, the candle 32
The heat insulating material 50 which is in contact with the end of the heat insulating material 36 and has a trapezoidal cross section that is slightly harder than the heat insulating material 36 is closely attached to the inner surface of the housing 40 made of metal (for example, stainless steel). or,
The left end portion of the cylindrical body 37 is bent outward in the radial direction to form a flange portion 37a.
And is in contact with the outer peripheral portion of the heat insulating material 50. Therefore,
An airtight annular space is provided between the housing 40 and the cylindrical body 37.
39 is formed. A candle support 52 made of metal is attached to the oxygen supply device S ′ side by fitting the outer periphery of the candle support 52 to the housing 40.
A heat insulating material 51 having the same hardness as 0 is attached. Although the shape of the candle support 52 is clearly shown in FIGS. 2 and 4, a large number of circular openings 52a are formed in the outer peripheral portion.
Between the heat insulating material 51 abutting against this and a similar hard heat insulating material 54 attached to the left open end of the housing 40,
As in the conventional case, the filter 53 made of, for example, hopcalite
Is filled. A cover 60 made of metal is attached to the housing 40 on the outside of the heat insulating material 54,
A relief valve 55 and an oxygen supply device S ′ having the same structure as the conventional one are attached to this. That is, the relief valve 55 seats the valve element 63 biased to the right by the spring 64 on the valve seat forming member 66, and the hole h ′ is generated when the internal pressure of the oxygen generator 30 becomes abnormally high. Oxygen is flowing out from. Also, the metal fitting 5 of the oxygen supply device S '
The inner hole of 6 communicates with the inside of the oxygen generator 31, and lead-out pipes 57a and 57b are connected to the metal fitting 56, through which oxygen is supplied to the outside. The right end of the tubular body 37 made of copper is pinched by the inner surface of the right end of the candle holder 38, and this portion, the tubular body 37, and the candle holder 38 are sealed against oxygen. Since copper is soft, this sealing can be easily performed.

The oxygen generator 31 according to the embodiment of the present invention is constructed as described above, and its operation will be described below.

In use, the label 49, together with the pin P, is removed from the hammer piston 48 and the firing pin, which is inserted vertically into the radial hole, is pulled out. This allows the hammer piston 48 to be
1 moves to the left in FIG. 1 due to the spring force of the spring 47 and collides with the detonator 43. As a result, a spark is generated, the ignition charge portion 33 is ignited, and oxygen is generated by this thermal decomposition. This occurs at a large flow rate, but when the initiator portion 34 is ignited, the flow rate slightly decreases and oxygen is continuously generated. This is a high heat, flows radially outward along the bottom surface of the candle holder 38, further flows between the cylindrical body 37 and the heat insulating material 36, and through the heat insulating material 36, flows to the left in the drawing, and reaches the candle support 52. It passes through the formed large number of circular openings 52a, further passes through the heat insulating material 51 and the filter 53, is sufficiently cooled in the oxygen supply device S ', and has a degree that does not affect the human body at all. 57
It is supplied to the outside through b.

In this embodiment, since the cylindrical body 37 made of a cylindrical copper plate is fitted around the heat insulating material 36, it functions as a shield, so to speak, and the ignition charge portion 33 is first used.
Also, high-temperature oxygen is generated from the initiator part 34, which flows to the left end through the heat insulating material 36 and through the gap between the heat insulating material 36 and the metal cylinder 37, and immediately the cylinder 37
Heat is transferred to the entire inside. A gap between the bottom of the candle holder 38 and the right end surface of the candle 32, and the tubular body 37 and the heat insulating material 3
The tubular body 37 is directly heated by the high-temperature oxygen flowing through the gap between the tubular body 37 and 6 and then the candle 32 inside is heated via the heat insulating material 36. As a result, almost no heat is transferred from the cylindrical body 37 in the radial direction, and even if it is transferred, it is transferred to the housing 40 through the space 39 , and the air is a so-called heat insulating material. It is kept at a lower temperature.

On the other hand, since the entire tubular body 37 is uniformly heated and the heat transfer to the housing 40 is cut off, the heat from this is transferred to the inner candle 32 through the heat insulating material 36. As a whole, the temperature of the candle 32 is kept at a high temperature as compared with the conventional case. On the other hand, it is thermally decomposed from the right side, this heat is transmitted to the left side, is heated to a high temperature in advance, and in sequence,
Pyrolysis is performed to generate oxygen, which passes through the heat insulating material 36 or the gap between the heat insulating material 36 and the cylindrical body 37 and the heat insulating material 51, and further through a large number of circular openings 52a formed in the outer peripheral portion of the candle support 52. , And is guided to the oxygen supply device S ′ through the heat insulating material 51 and the filter 53. Oxygen cooled to such an extent that the human body is not affected is supplied to the outside from the outlet pipes 57a and 57b.

As described above, according to the oxygen generator 31 of the first embodiment of the present invention, the cylindrical body 37 and the housing 4 are
Since an annular airtight space 39 is formed with 0,
Further, the tubular body 37 made of copper acts as a shield and the candle 3
2 is covered, the amount of heat transferred to the housing 40 is very small, and therefore the housing 4 is much wider than in the conventional case.
The temperature of 0 is lowered, and the cylinder 37 prevents the candle 3
The heat from the thermal decomposition from 2 is reduced as much as possible to be transferred to the space 39 , and the heat from this is reduced to the inner candle 32.
By being efficiently supplied to the whole, the candle 32
The whole is heated uniformly. Therefore, the candle 32 sequentially undergoes thermal decomposition from the right side to generate oxygen, but the entire candle 32 is thermally decomposed without interruption in the middle, and finally, as shown in FIG. 5, NaClO ₃
The whole becomes NaCl. Therefore, a predetermined oxygen flow rate can be supplied to the outside in a predetermined pattern.

Next, referring to FIGS. 6 to 10, the second embodiment of the present invention will be described.
Examples will be described. The parts corresponding to those in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

That is, although the oxygen generator of the present embodiment is indicated by 31 'as a whole, it is corrosion-resistant and reaction-inactive with respect to the candle 32 as the supporting means of the candle 32 on the ignition device F'side. , A candle holder 38 'made of a heat-resistant metal such as stainless steel (carbon steel)
6 has a long cylindrical shape with a bottom portion at one end as shown in FIGS. 6 and 7, and the bottom side is the ignition device F ′ side of the candle 32, that is, the ignition charge portion 33, as shown in FIG. Also, the one end side of the candle 32 is surely held by being closely fitted to the initiator part 34, and the end part 38b 'on the oxygen supply device S'side is surely held.
Has an enlarged diameter and is pinched between the housing 40 and the outer peripheral end portion 52b 'of the candle support 52' as the other supporting means. Therefore, the candle holder 38 '
Defines an airtight space 39 ′ with the housing 40 for the candle 32. A large number of circular openings 52a 'are formed at the outer peripheral end of the candle support 52', which communicates with the space E inside the expanded diameter end 38b 'of the candle holder 38'.

Oxygen generator 3 according to the second embodiment of the present invention
1'is configured as described above, and this operation will be described next.

In use, the label 49, together with the pin P, is removed from the hammer piston 48 and the firing pin, which is inserted vertically into the radial hole, is pulled out. This allows the hammer piston 48 to be
6 moves to the left in FIG. 6 due to the spring force of the spring 47 and collides with the detonator 43. As a result, a spark is generated, the ignition charge portion 33 is ignited, and oxygen is generated by this thermal decomposition. This occurs at a large flow rate, but when the initiator portion 34 is ignited, the flow rate slightly decreases and oxygen is continuously generated. This is a high heat, and flows radially outward along the bottom surface of the candle holder 38 ', further passes between the inner peripheral surface of the candle holder 38' and the heat insulating material 36, and through the heat insulating material 36, and to the left in the figure. Flowing, passing through a large number of circular openings 52a 'formed in the candle support 52', and further passing through the heat insulating material 51 and the filter 53, the oxygen supply device S'is sufficiently cooled and has no effect on the human body. It is not supplied to the outside through the outlet pipes 57a and 57b. In addition, 41 'is a heat insulating material.

In the present embodiment, as described above, the high-temperature oxygen generated from the candle 32 causes the gap between the inner peripheral surface of the candle holder 38 'and the heat insulating material 36 and the heat insulating material 3 to be present.
6 (which is breathable), and is further deodorized, cleaned, and supplemented with chlorine by the filter 53 through the multiple circular openings 52a 'of the candle support 52' (this is the first
The same applies to the embodiment), but the oxygen is supplied from the oxygen supply device S ′ to the outside.
Between the 8'and the candle 32 is an airtight space 39 '
Since the air is a kind of so-called heat insulating material, the heat from the candle holder 38 'is only transferred to the housing 40 by radiation, and the heat insulating material 36 is conventionally used.
The heat is transferred to the housing 40 directly through the heat insulating material 36, but the amount of heat is much smaller than that of the heat transferred directly to the housing 40 through the heat insulating material 36. Can be significantly lower than before. In addition, as can be seen from comparison with FIG. 30 showing the conventional example with such a configuration, not only the thickness of the heat insulating material is made small, but also the size of the entire device is made larger than the conventional one due to the heat insulating effect of the space 39 ′. The width can be made small, and the device cost can be greatly reduced.

Further, although the candle holder 38 'is made of stainless steel in this embodiment, since high-temperature oxygen flows inside the candle holder 38', the heat generated on the side of the igniter F ', such as the A layer and the B layer, can be quickly transferred to the left end portion. Further, the high-heat oxygen that has been transferred to the interior flows into the limited space between the candle holder 38 ′ and the heat insulating material 36, so that the entire inner candle 32 is efficiently heated. Therefore, conventionally, the temperature of the entire candle 32 is raised and the thermal decomposition is not stopped midway.
Therefore, as shown in FIG. 10, all the candles 32 are thermally decomposed into NaCl (salt).

In the oxygen supply device S ', the valve body 61 opens due to the pressure of oxygen when the pyrolysis of the candle 32 starts, and thereafter the human being who uses the valve body 61 in the temporal oxygen flow rate pattern as shown in FIG. Can be supplied with oxygen.

FIG. 11 shows an oxygen generator 31 ″ according to a third embodiment of the present invention. The parts corresponding to those in the above embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

In the second embodiment described above, the diameter of the oxygen supply device S'side of the candle holder 38 'is expanded, and its end is between the inner peripheral surface of the housing 40 and the outer peripheral end of the candle support 52'. Instead of this, in the present embodiment, the diameter of the candle holder 38 ″, which is made of stainless steel having a cylindrical shape as a whole, is made substantially constant up to the end portion, and the diameter is expanded as a step at the end portion, The expanded end portion 38b ″ may be clamped and held by the housing 40 by its spring force. However, similarly to the above-described embodiment, the outer peripheral surface of the candle support 52 ′ and the housing 4 may be further stepped.
It is made to pinch with the inner peripheral surface of 0. In this embodiment, the same effect as in the second embodiment is obtained, but the airtight space 39 " formed between the housing 40 and the candle holder 38" has a larger capacity than in the second embodiment. Therefore, the heat insulating effect is further increased, and the temperature of the housing 40 can be further reduced even if the other configurations are exactly the same. Moreover, the temperature of the inner candle 32 can be further raised, and the candle 3 can be more reliably
2 is prevented from stopping thermal decomposition on the way.

When the generated oxygen is not sufficiently cooled and is supplied to the outside, a cylinder formed with the housing 40 and the spaces 39 , 39 ' and 39 " of the above-described embodiment. Body 37 (first embodiment) and candle holder 3
If a plurality of heat radiation fins projecting into the spaces 39 1 , 39 ′ , 39 ″ are provided on the outer circumference of the 8 ′, 38 ″, the heat of the tubular body 37 and the candle holders 38 ′, 38 ″ can be converted into the spaces 39 , 3 ″.
Since the heat is dissipated by the heat dissipating fins 9'and 39 " , the candle holders 38 'and 38" and the cylindrical body 37
Oxygen passing through the gap between the heat insulating material 36 and the heat insulating material 36 has a sufficiently low temperature and is supplied to the outside. In addition, this heat dissipation fin is composed of the cylindrical body 37 and the candle holder 3.
By providing densely in the high temperature part on 8 ', 38 "and sparsely in the low temperature part, for example, the pitch of the heat radiation fins is narrowed in the high temperature part, and in the low temperature part. If the pitch of the fins is widened, the oxygen can be efficiently cooled without making the overall weight of the oxygen generator too heavy.

Further, the spaces 39 , 39 ' of the above embodiment,
If 39 " is filled with metal wool such as steel wool, the cylinder 37 and the candle holder 38 ', 3'
Since the 8 "acts as a shield, the surface temperature of the housing 40 can be lowered, but at a high temperature on the cylinder 37 and the candle holders 38 ', 38", the density is high, and the cylinder 37 And candle holder 38 ', 3
If you fill this steel wool with a low density in the low temperature part above 8 ", you do not have to dissipate the fins for heat dissipation,
Oxygen can be efficiently cooled without increasing the weight of the entire oxygen generator.

Further, steel wool provided with high density,
If a partition is provided between the steel wool and the low-density steel wool, the steel wool does not move even when subjected to vibration,
It is possible to maintain a state in which these steel wools are arranged at predetermined positions and at a predetermined density. Further, instead of the partition, for example, a wire mesh is made of steel wool and a thread made of metal is used to form the cylindrical body 37 and the candle holder 3.
8 ', 38 "is attached to the high temperature portion with high density, and the low temperature is attached to the tubular body 37 and the candle holders 38', 38" with low density to form the wire mesh into a cylindrical shape. Even when the steel wool is inserted into the spaces 39 1 , 39 ′ , 39 ″ , the steel wool does not move and the state in which the steel wool is disposed at a predetermined position and with a predetermined density can be maintained.

Next, the oxygen generator in the oxygen generator according to the above-mentioned embodiment of the present invention will be explained. It should be noted that, except for the candle 2 which is an oxygen generating agent, the apparatus shown in FIG.
Even if the oxygen generator 1 of the conventional example of 0 is applied as it is,
The effect of the oxygen generator according to the present invention can be obtained.

That is, in each of the above embodiments, the oxygen generating agent, that is, the candle 32 has the composition shown in Table 1. That is, A, B, C from the ignition device F ′ side
And D layer (corresponding to the ignition charge part 33, the initiator part 34, and the main parts 35a and 35b, respectively) contain each component in the weight% as shown, but the main component is sodium chlorate (NaClO). ₃ ) and reduced iron powder are 50, 7 in the A, B, C and D layers from the igniter F, F ′ side, respectively.
0, 85 and 87.5% by weight and 27, 18, 6 and 2.5% by weight, and the thermal decomposition rate thereof is gradually decreased. Further, iron oxide Fe ₂ O as a catalyst is used.
₃ was set to 9, 10, 7 and 0% by weight, and cobalt oxide (which is considered to have a catalytic function for increasing the decomposition rate like iron oxide) was 9% by weight and 1% only in the A and D layers.
% By weight, calcium peroxide (CaO ₂ ) is 3,
2, 2 and 2% by weight, potassium perchlorate (which reduces the thermal decomposition rate) is 3% by weight only in the D layer, silicon oxide S
iO ₂ (molding aid-improved moldability) is contained in the layer A in an amount of 2% by weight, and the small piece of stainless steel according to the present invention is contained in the layer D in an amount of 4% by weight.

[0058]

[Table 1]

According to each of the examples, the small piece made of stainless steel has a shape as shown in FIG. 12 and has a thickness of 20 μm.
m, a width of 100 μm, a length of 2 to 3 mm, and a small plate-like shape obtained by cutting a long strip having a thickness of 20 μm and a width of 100 μm at a predetermined pitch, that is, 2 to 3 mm. Although such small pieces are observed as particles with the naked eye, a large number of such small pieces are uniformly contained in the D layer as shown in Table 1 at 4% by weight. Further, such an aggregate of small pieces has good dispersibility and can be uniformly mixed with the D layer. Furthermore, since the small pieces are granular, they are easy to handle. The size of the small pieces is 10 to 30 μm, and the size is 80 to
A range of 120 μm width and 1-5 mm length is preferable. Below this, the heat transfer effect will be impaired, and above this, uniform mixing with other compositions will be difficult.

When the ignition device of the oxygen generator equipped with the candle 32 as described above sequentially ignites from the layer A, oxygen is generated similarly to the conventional example. However, as shown in FIG. In the region where the thermal decomposition is slowed down, the thermal decomposition sometimes stopped midway. However, in the above-described embodiment, this does not occur as described above, and a small piece made of stainless steel has a composition of each composition. In addition to the role of the binder, in addition to the effect of the configuration of the above-described embodiment, the heat from the ignition device side is efficiently transmitted to the undecomposed region, and the configuration of the oxygen generation device 1 of the conventional example shown in FIG. Even if it is applied to, it can be thermally decomposed from a higher temperature than before.
Therefore, it is possible to more reliably prevent the thermal decomposition from being stopped midway, and it is possible to completely thermally decompose the oxygen supply device S ′ side end portion.

Further, according to each of the above-mentioned embodiments, the A, B, C and D layers contain calcium peroxide of 3, 2, 2 and 2% by weight, and the chlorine gas generated during the thermal decomposition is toxic. Therefore, in the prior art, barium peroxide Ba ₂ O was used to supplement this to form barium chloride (BaCl ₂ ), but in the present example, this chlorine gas was supplemented as calcium chloride by calcium peroxide, and Although no toxic chlorine gas is generated (the chlorine gas can be supplemented by the filter 53), if barium peroxide (Ba ₂ O) is toxic in the conventional case, incomplete thermal decomposition is caused. If the candle 32, which is an oxygen generating agent, remains in the container, it contains barium peroxide. Therefore, when discarding it, there is a great deal of control over this disposal so as not to adversely affect the human body. Had given, according to the above embodiments, since calcium peroxide is toxic to the human body, it never gives conventional such limitation on such disposal.

Oxygen is generated by the thermal decomposition of NaClO ₃ , but chlorine gas is also generated with this. Since this is toxic, barium peroxide BaO ₂ is conventionally added to the oxygen generating agent to supplement it. As a result, the thermal decomposition is promoted and the toxicity is converted into barium chloride by the following chemical formula, that is, BaO ₂ + Cl ₂ → BaCl ₂ + O ₂ reaction. However, the toxicity of barium peroxide has been regarded as a problem in recent years, and the handling during the production and the disposal during the disposal (there remains naturally when the thermal decomposition is not completely performed) become a problem. There is.

In PCT, WO92 / 18423, Ca (OH) ₂ , Mg (OH) ₂ , CaCO ₃ and MgC are used as an additive for supplementing chlorine instead of BaO _2.
O ₃ is disclosed. However, when they react with chlorine gas, they generate H ₂ O in the case of Ca (OH) ₂ or Mg (OH) ₂ and CO ₂ in the case of CaCO ₃ or MgCO _3. . Since they are generated together with the generation of oxygen, some treatment is required so that they do not adversely affect when they are applied to the human body, for example.
Furthermore, calcium peroxide stabilizes the flow rate of oxygen generated.

However, according to the oxygen generating agent of the present invention, without using toxic barium peroxide (BaO ₂ ), the thermal decomposition of the oxygen generating agent is promoted in the same manner as in the conventional case, and the alkali metal chlorate is used. Or perchlorate, eg NaClO
_The chlorine gas released from ₃ can be reliably supplemented with a non-toxic additive.

FIG. 13 shows an oxygen generator 71 according to a fourth embodiment of the present invention. Parts corresponding to those in the above embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

In this embodiment, the candle 32 having a substantially cylindrical shape is shown by uniform hatching, but like the above embodiment, it comprises an ignition charge part, an initiator part and a main part. However, this is omitted in the drawing. The heat insulating material 36 covering the candle 32 is supported by the bottom of a candle holder 68 extending on the side of the ignition device F ″, that is, on the right side in the figure to the vicinity of the left end of the heat insulating material 36. The candle holder 68 includes the candle 32. Is made of a material that is corrosive, reaction-inert, and heat-resistant, such as stainless steel, and has a cylindrical shape having a bottom portion on the ignition device F ″ side, and forms an annular space t with the housing 40. There is.

The oxygen supply device S "side of the candle 32 and the heat insulating material 36 is supported by the candle support 52".
A heat insulating material 50 is provided between the heat insulating material 50 and the candle support 52 ″ between the heat insulating material 50 and the candle support 52 ″ in the same manner as in the above embodiment. It is pinched. Side portion 69c of passage forming member 69
Extends to the right in the drawing so as to concentrically divide the annular space t with respect to the candle 32, and in this embodiment, forms a passage 73 which is an outermost passage portion with the housing 40. And the passage 7 between the candle holder 68
Forming 2 . Therefore, the passage forming member 69 is provided to guide the generated oxygen to the right in the passage 72 and to the left in the passage 73 in the axial direction. An annular space r is formed between the passage forming member 69 and the left end portion 68a of the candle holder 68, and the heat insulating material 36 and the heat insulating material 36 and the candle holder 6 are interposed via the space r.
Oxygen that has passed through the gap with 8 is guided to the passage 72 .

Further, in this embodiment, the candle holder 6
On the right side of 8, the detonator holding member 4 of the ignition device F ″ is provided at the center.
A seismic resistant member 70 made of a plate-shaped metal, such as stainless steel, attached to 4'is provided. This earthquake-resistant member 70
The bottom portion 70b has a shape that follows the shape of the right side of the candle 32, but the peripheral portion 70a is bent to the right and engages with the housing 40. Further, the cover 4 that is the first lid member that covers the right side opening of the housing 40.
The peripheral portion 42 b ′ of 2 ′ is bent to the left side and engages with the housing 40. This is the peripheral portion 7 of the seismic member 70.
It is fixed by butt welding with 0a. In addition,
The earthquake-proof member 70 has an annular space between it and the passage forming member 69.
q is provided, and this void q allows the generated oxygen to pass through the passage 72.
To lead to the passage 73 .

Therefore, the generated oxygen, after passing through the heat insulating material 36, passes through the void r 1 , the passage 72 , the void q , the passage 73 and the circular opening 52a ″ of the candle support 52 ″, that is, the candle holder 68. Housing 40
Of the passages 72 and 73 formed between the first and second passages, the oxygen is supplied to the outside from the oxygen supply device S ″ after the passage 73 is finally passed.

Further, in the present embodiment, the second opening made of a plate-shaped metal (for example, stainless steel) is provided in the left opening of the housing 40.
Although a cover 60 ′ which is a lid member of the above is provided, an end portion 60a ′ of the cover 60 ′ is bent rightward in the drawing,
The end 52 of the candle support 52 "on the housing 40
It is fixed by butt welding to b ". Cover 6
A filter 53 is filled between 0 ′ and the candle support 52 ″ via the candle support 52 ″ and the heat insulating material 51, and via the cover 60 ′ and the heat insulating material 54.
The cover 60 ′ is provided with a relief valve 55 having the same structure as the conventional one, and a valve seat forming member 74 of the oxygen supply device S ″. Inside the valve seat forming member 74, a through hole 74 is provided.
a is formed, and a conical valve seat 74aa is formed at one end of the through hole 74a, that is, at the left end in the drawing. Further, the spring 62 is provided in the through hole 74a.
Is provided with a valve body 61 'urged to the right by the valve body 61', and the valve body 61 'has a conical seating portion 61a' formed at one end, that is, at the left end in the drawing. An annular groove is provided in this seat 61a ', and an O-ring 77, which is an annular sealing member, is fitted therein, so that when the seat 61a' of the valve body 61 'is seated on the valve seat 74aa. Can be tightly sealed, that is to say reliably act as a check valve. In addition,
The valve seat forming member 74 has a substantially L-shaped metal fitting 5 on its left side.
6'is made to be disassembled, and the metal fitting 56 'has a lead-out pipe 57 in the same manner as the metal fitting 56 of the above embodiment.
a and 57b are attached to the outside.

Further, in this embodiment, the ignition device F "
The cylindrical body 46 'is engaged with the right end portion of the detonator holding member 44' by caulking, which reduces the number of parts constituting the ignition device F ".
The detonator 43 is provided on the left side of the stepped inner hole 44a 'of 4', but the right side of the inner hole 44a 'is a cylindrical body 46'.
Of the inner cylinder 46a 'of the cylindrical body 4 and the hammer piston 48 is interposed between the inner hole 44a' and the inner hole 46a '.
It is provided so as to be biased to the left by a spring 47 arranged at 6 '. Similar to the above embodiment, the hammer piston 48 is provided with a protruding portion 48a at the left end portion thereof, and the right end portion thereof is protruded from the cylindrical body 46 'to the outside, and a firing pin (not shown) is inserted into a hole provided therein. This firing pin has a pin P labeled 49.
Is attached. In this embodiment, the ignition device F ″ including the detonator holding member 44 ′, the cylindrical body 46 ′, the detonator 43, the spring 47 and the hammer piston 48 is inserted into the hole 42a ′ provided at the center of the bottom portion of the cover 42 ′. But
The cover 42 'is fixed to the detonator holding member 44' by laser beam welding.

A heat insulating material 83 connected to the heat insulating material 36 is provided between the bottom portion of the candle holder 68 and the right end portion of the candle 32.
A solid candle 32 that is stiffer than the heat insulating material 36, forms a path for oxygen generated immediately after the candle 32 starts thermal decomposition to flow out to the heat insulating material 36, and is compression molded.
And a candle holder 68 made of metal come into contact with each other to function as a cushion.

The oxygen generator 71 of the present embodiment has the above-mentioned structure, and its operation will be described below.

In use, the firing pin is pulled out from the hammer piston 48 together with the pin P. Then
Similar to the above-described embodiment, the hammer piston 48 has the spring 4
The spring force of 7 moves to the left in the figure, and the protrusion 48a collides with the detonator 43 to generate a spark. This spark ignites the candle 32, and the candle 32 is gradually thermally decomposed from the right side on the ignition device F ″ side to generate oxygen.
This oxygen flows to the left through the gap between the heat insulating material 36 and the heat insulating material 36 and the candle holder 68 (after passing through the heat insulating material 83 when the thermal decomposition starts), and after reaching the left end portion of the heat insulating material 36, After passing through the air gap r , it flows rightward through the passage 72 . When it reaches the right end of the passage 72 , it passes through the space q , then flows leftward through the passage 73 , passes through the circular opening 52a "of the candle support 52" and the heat insulating material 51, and then to the filter 53. Inflow. In the filter 53, dust, dust, odor, etc. of the air are removed in the same manner as in the prior art to make it tasteless and clean, and the outlet pipes 57a, 57 of the oxygen supply device S ″.
It is supplied to the outside from b. At this time, the oxygen supply device S ″
The valve body 61 'is moved leftward against the biasing force of the spring 62 by the generated oxygen pressure, and the seating portion 61a' separates from the valve seat 74aa to open the valve.

In this embodiment, the passage forming member 69 forms the passage 72 with the candle holder 68 and the passage 73 with the housing 40.
The hot oxygen is gradually cooled while passing through the passage 72, and when passing through the passage 73 , which is the outermost passage portion closest to the housing 40, the hot oxygen is already cooled, so that the oxygen is cooled. Does not heat the housing 40, that is, the outer circumference of the oxygen generator 71 does not heat.

FIG. 14 shows the result of measuring the surface temperature of the oxygen generator 71 in this example. In FIG. 14, black circles indicate the surface temperature of the oxygen generator 71 of the present embodiment, that is, the surface temperature of the housing 40, and the surface temperature of the oxygen generator 1 of the conventional example is indicated by a white circle for comparison. K, J, and I of FIG. 14 show the positions on the housing 11 and 40 from the ends of the oxygen generators 1 and 71, respectively, and these positions are as shown in FIGS. 13 and 33. In addition, the position I is a position corresponding to the right end portion of the heat insulating materials 10 and 36 covering the candles 2 and 32, and the position J is substantially the central portion of the candle 32. In the conventional oxygen generator 1, the candle holder is The position K is a position where oxygen flows out from the peripheral portion of the member 6, and the position K is a position immediately before oxygen flows into the opening 7a of the candle support 7 or the circular opening 52a "of the candle support 52". FIG.
As is clear from FIG. 4, the temperature of the position J on the housing 11 of the oxygen generator 1 of the conventional example is as high as about 500 ° F., which is higher than the positions I and K by about 100 ° F., and If the required value was, for example, less than 500 ° F, then it could barely meet that requirement. This is because hot oxygen flows out from the end of the candle holder 6 at the position J, and the heat of oxygen is transferred to the housing 40 by the heat insulating material 3.
This is because it is transmitted directly through 0. However, at the position J of the housing 40 of the oxygen generator 71 of the present embodiment, the temperature is about 400 ° F, which is about 100 ° F lower than that of the oxygen generator of the conventional example. Therefore, the surface temperature of the oxygen generator 71 of the present invention is 40
Almost leveled around 0 ° F, and even if the required value is less than 500 ° F, the required value can be sufficiently satisfied.

Further, in this embodiment, since the high temperature oxygen flows through the radially inner passage 72 and then the radially outer passage 73 , that is, the oxygen passing near the candle 32 has a high temperature. The heat of the high temperature oxygen is transferred to the candle 32, so that even in the layer with the slower reaction speed toward the ignition side of the candle 32, the thermal decomposition does not stop halfway, so it is possible to ensure that Oxygen can be supplied.

Further, in this embodiment, the candle holder 6
8 is provided with a seismic resistant member 70 that engages with the ignition device F ″ in the central portion, and a peripheral portion 70a ′ of the seismic resistant member 70 and the cover 4 are provided.
Engage the housing 40 with the peripheral edge 42b 'of 2',
Moreover, since the peripheral edge portion 70a ′ of the seismic resistant member 70 and the peripheral edge portion 42b ′ of the cover 42 ′ are coupled to each other, the cover 42 ′ and the seismic resistant member 70 are mutually connected even when the oxygen generator 71 is vibrated. Since the vibrations are regulated together, the candle 32 is chipped or the candle 32 is held by the candle holder 6.
There is no danger of dropping from 8. In addition, the earthquake-resistant member 70
Since the bottom portion 70b of the candle has a shape that conforms to the shape on the right side of the candle 32, the candle 32 is less likely to fall off the candle holder 68 even when subjected to rough handling or vibration, and therefore the candle 32 Can reliably generate oxygen in a predetermined temporal flow pattern.

Further, in the ignition device F "used in the present embodiment, since the tubular body 46 'is integrally fixed to the detonator holding member 44' by caulking, the number of parts can be greatly reduced, therefore The configuration of the ignition device itself can be simplified. Further, in the oxygen supply device S ″ used in this embodiment, the O-ring 77 is provided on the seat 61a ′ of the valve body 61 ′.
Since it is arranged, it is possible to improve the sealing performance,
Further, since the valve seat forming member 74 is inserted into the metal fitting 56 ', it can be easily disassembled for maintenance or the like.

Further, in this embodiment, since the cover 60 'and the candle support 52 "are combined, the cover 6'
0'and the candle support 52 "regulate their movement in the axial direction, and the friction between the particles of the filter 53 filled between the two members is suppressed to a minimum, so that the friction such as vibration causes It is possible to prevent particles from becoming small and cavities to be generated in the portion filled with the filter 53, so that it is possible to reliably remove dust, dust, odor, etc. from the generated oxygen. It is possible to prevent the performance of 53 from deteriorating.

That is, in this embodiment, the housing 40
Does not become hot, the heat of high-temperature oxygen is transferred to the candle 32, and the thermal decomposition of the candle is performed without stopping, so that the same effect as in the above-described embodiment can be obtained. In addition, with the improvement of the earthquake resistance, the passage forming member 69 forming the passages 72 , 73 does not move or deform, so that the passage
Since the flow cross-sectional areas of 72 and 73 are always constant, the oxygen passing through these passages 72 and 73 is surely cooled.

Next, the fifth embodiment will be described with reference to FIGS. The parts corresponding to those in the above embodiment are designated by the same reference numerals, and the description thereof will be omitted.

That is, the oxygen generator of the present embodiment is indicated by 71 'as a whole, which has almost the same structure as the oxygen generator 71 of the fourth embodiment, but in the present embodiment,
A left end portion of a candle holder 68 'having a configuration similar to that of the candle holder 68 of the above-described embodiment is in contact with the passage forming member 69. Furthermore, candle holder 6
As shown in FIG. 16, a plurality of notches 68a ′ are provided at the left end portion of 8 ′, and the oxygen generated from the candle 32 passes through the heat insulator 36 and the heat insulator 36 through the notches 68a ′. After passing through the gap with the candle holder 68 ′, it flows out from the left end of the heat insulating material 36 into the passage 72 .

In this embodiment, in addition to the same operation and effect as the fourth embodiment, the end of the candle holder 68 'supporting the right end of the candle 32 is brought into contact with the passage forming member 69. Therefore, the candle holder 68 ′ supporting the right end portion of the candle 32 is supported at the left end portion thereof, and thus has a structure excellent in earthquake resistance. Also,
Since the end portion of the candle holder 68 'is simply contacted and supported, that is, it is not supported by welding, the seismic resistance is improved without increasing the number of manufacturing steps.

In this embodiment, the notch 68 is formed at the end.
The end of the candle holder 68 ′ provided with a ′ was brought into contact with the passage forming member 69. The cutout 68 a ′ has oxygen passing through the heat insulating material 36 covering the candle 32 and flowing out to the passage 72 . Therefore, a candle holder having a plurality of openings instead of a plurality of notches in the vicinity of the end may be provided and the end may be brought into contact with the passage forming member 69. Obviously, the same effect can be obtained in this case as well.

Next, the sixth embodiment will be described with reference to FIGS. 17 to 23. The portions corresponding to the above embodiments are designated by the same reference numerals and the description thereof will be omitted.

The oxygen generator of this embodiment has a total of 7
1 ", which is the oxygen generator 71 of the above embodiment,
71 ', which has almost the same configuration as that of 71', but a candle holder 78 for supporting the candle 32 is provided on the right side of the candle 32. The candle holder 78 is made of a material that is corrosive, reaction-inert and heat-resistant to the candle 32, such as stainless steel, and has a bottom portion on the side of the igniter F ″, like the candle holders 68 and 68 ′ described above. The left end 44b 'of the detonator holding member 44' of the ignition device F "is inserted into the opening 78c provided in the bottom of the cylinder, but in the present embodiment, the left end thereof is not illustrated. A plurality of slit-shaped notches 78a as shown by 18 are provided at substantially equal angular intervals. The slit-shaped notch 78a is formed by cutting a part of the candle holder 78 outward, and the cut-out part is a first protrusion on both sides of the slit-shaped notch 78a. The protrusion 78b is in pressure contact with the inner circumference of the passage forming member 69 'in this embodiment. As shown in FIG. 17, this passage forming member 69 'extends so that its end portion abuts against the seismic resistant member 70, and its end portion has a plurality of slit-shaped notches 69a'.
Are formed at substantially equal angular intervals as shown in FIG. This slit-shaped notch 69a ′ has the same structure as the slit-shaped notch 78a of the candle holder 78, that is, the slit-shaped notch 69a ′ is opened by cutting a part of the passage forming member 69 ′ outward. A part that is formed and cut open on both sides thereof is provided as a protrusion 69 b ′ that is a second protrusion. Further, the protruding portion 69b ′ is in pressure contact with the inner circumference of the housing 40.

Since the operation of this embodiment is similar to that of the fourth embodiment, its explanation is omitted. However, in this embodiment, the protrusion 78b provided near the end of the candle holder 78 is used.
Is pressed against the inner circumference of the passage forming member 69 'and is provided near the end of the passage forming member 69'.
Is pressed against the inner circumference of the housing, the end of the passage forming member 69 'is supported by the housing 40 by the protrusion 69b' which is the second protrusion, and the passage forming member 6 '
Since the end of the candle holder 78 is supported on the inner circumference of 9 ′ via the protrusion 78b which is the first protrusion, the candle holder 78 supporting the right end of the candle 32 is supported. Since the radial movement is suppressed, the passage forming member is reinforced and the passages 72 , 73 through which oxygen passes can be prevented from being deformed. Furthermore, a candle 32
On the right side of the seismic member 70 and the cover 42 ',
Further, the left side thereof is not only supported by the candle support 52 ″ so that the movement due to vibration is restricted, but also the movement of the candle 32 in the radial direction is suppressed, so that the structure has more excellent earthquake resistance. Even if the candle 32 is subjected to vibration or rough handling, the candle 32 does not drop off from the candle holder 78 or the candle support 52 ″ and is not chipped, and it is possible to reliably generate the predetermined oxygen. In this embodiment, since the end of the passage forming member 69 ′ is brought into contact with the seismic resistant member 70, that is, the passage forming member 69 ′ is supported by both ends, the passage forming member 69 ′ is further supported. Since the matching candle holder 78 is also supported by both ends, it does not move easily even if the candle 32 supported on the right side by the candle holder 78 receives vibration. Therefore,
In the present embodiment, in addition to the above-described effect that the housing 40 does not become hot and the candle 32 is completely pyrolyzed, even if it is subjected to vibration, the passages 72 , 7 through which oxygen passes.
High-temperature oxygen is surely cooled without deformation of 3 .

Also, in this embodiment, the candle holder 7
Since the protruding portion 78b provided in 8 is formed at once when the slit-shaped notch 78a is provided, the protruding portion 69b 'provided in the passage forming member 69' also has the slit-shaped notch 69a '. Since the protrusions 78b and the protrusions 69b 'are not formed separately from the slit-shaped notches 78a and the slit-shaped notches 69b' because they are formed at the same time when the candle holders 78 and the passage forming members 69 are provided. There is no increase in the number of manufacturing processes.

In this embodiment, the candle holder 7
8 is provided with a slit-shaped notch 78a for allowing oxygen to flow out from the heat insulating material 36 to the passage 72 , but this may be an opening, and its end portion is brought into contact with the passage forming member 69 '. Good. Further, the slit-shaped notch 69a 'for allowing oxygen to flow out from the passage 72 to the passage 73 is provided in the passage forming member 69', but this is not limited to the notch, and the opening may be formed to open the passage forming member 69 '. If the seismic resistant member 70 is brought into contact with the entire circumference of the end face, the slit-shaped notch 69a ′ is formed.
It is clear that the seismic resistance is higher than that in the case of providing and abutting. In addition, in the present embodiment, since the projecting portion 78b and the projecting portion 69b 'are only in pressure contact with the passage forming member 69' and the housing 40, the earthquake resistance can be enhanced without increasing the manufacturing process. .

Further, as shown in FIG. 19, all the protrusions 69b 'formed on the passage forming member 69' are pressed against the inner circumference of the housing 40.
It is also possible to fold a part of it inwardly and press it against the outer circumference of the candle holder 78. In this case, the passage forming member 69 ′ not only engages with the housing 40 at its end, but also engages with the candle holder 78, so that the radial movement is further suppressed and the earthquake resistance. Can be further improved.

Further, in the sixth embodiment, the protrusion 78b is used.
Although the protrusion 69b 'is formed so as to extend in the axial direction of the housing 40, an annular protrusion is provided in the vicinity of the end so that the protrusion is formed on the passage forming member 69' and the inner circumference of the housing 40. You may make it press-contact. That is, like the oxygen generator 75 shown in FIGS. 20 to 22, a plurality of openings 7 are provided at the end of a candle holder 78 ′ having the same material and shape as the above-mentioned candle holder 78.
8a ′ is provided, an end portion thereof is brought into contact with the passage forming member 69 ″, and an annular protruding portion (first protruding portion) 78b ′ which is in pressure contact with the inner circumference of the passage forming member 69 ″ is provided in the vicinity of the end portion. And a plurality of openings 78ba ′ are provided therein, or openings 69a ″ are provided at the ends of the passage forming member 69 ″ so that the ends are pressed against the seismic resistant member 70 and the housing 40 is provided near the ends. It is also possible to provide an annular protrusion (second protrusion) 69b ″ that comes into pressure contact with the inner circumference of the protrusion, and to further provide a plurality of openings 69ba ″ in this protrusion 69b ″. Since the projecting portion 78b 'and the annular projecting portion 69b "are engaged over the entire circumference thereof, they can be more firmly supported than the projecting portions 78b, 69b' of the sixth embodiment. Therefore, also in this case, the effect described above, that is, the candle 32 can be completely pyrolyzed and the housing 40 does not become hot, but since the structure having excellent earthquake resistance is provided, the passages 72 , 73 are It is not deformed and therefore surely the passage of the outermost passage part
Since oxygen is cooled by the time it reaches 73 , the effect that the housing 40 does not become hot can be exerted even further.

Furthermore, the oxygen generator 7 shown in FIG.
As shown in 5 ', a plurality of cuts are made at the end of the candle holder 78 "having the same shape as the above-mentioned candle holder 78 to form a segment, and the segment is so arranged that its tip end is pressed against the inner circumference of the passage forming member 69. Is bent outward and the protrusion 78 is formed.
The opening 78a ″ may be formed by forming b ″ and further forming the protrusion 78b ″.
In this case, the generated oxygen passes through the openings 78a ″ from the heat insulating material 36 and then passes between the protrusions 78b ″ to flow out to the passage 72 . And the protrusion 78b ″ bent toward one side
Alternately, a segment that does not become b ″ but engages the passage forming member 69 is formed. Further, in this figure, a cut is made at the end of the candle holder 78 ″ parallel to the axial direction,
Although the shape of the protruding portion 78b ″ is made rectangular, the shape of the protruding portion is formed in a triangular shape by making the cuts at the ends oblique with respect to the axial direction and the directions of the adjacent cuts alternately differ. It may have a trapezoidal shape, etc. Further, a through hole may be formed at the center of these protrusions so that the flow cross-sectional area of oxygen flowing out from the heat insulating material 36 to the passage 72 becomes large. Further, the end of the candle holder may be cut diagonally with respect to the axial direction, and may be bent parallel to the axial direction without being bent on the same circumference to provide a triangular protrusion. .

Next, an oxygen generator 80 according to a seventh embodiment of the present invention will be described with reference to FIG. 24. The same parts as those in the above embodiment are designated by the same reference numerals, and detailed description thereof will be given. Is omitted.

In this embodiment, a hole provided at the center of the bottom 79c of the passage forming member 69 is engaged with the center of the ignition device F ", that is, with the left end 44b 'of the detonator holding member 44'. A closed closure member 79 is provided.
The side portion 79a of the closing member 79 extends to the vicinity of the candle support 52 ″ so as to cover the side portion 69c of the passage forming member 69, and the end portion thereof has a flange portion 79 protruding radially outward.
Airtight space between housing 40 and aa
Forming 89 . Further, a passage 73 ′ that is an outermost passage portion is formed between the closing member 79 and the passage forming member 69, and this passage 73 ′ is formed by the passage forming member 69.
Oxygen generated from the passage 72 is guided through an annular space q'provided between the right end of the closing member 79 and the closing member 79.

Oxygen generator 80 having such a configuration
Then, when pyrolysis of the candle 32 is started by the igniter F ″ to generate oxygen, the oxygen flows to the left end portion of the heat insulating material 36 as in the above-described embodiment, and passes through the gap r to form a passage. 72 to the right, through the cavity q'to the passage 73 'to the left, the candle support 52 ",
It is supplied to the outside from the oxygen supply device S ″ via the filter 53.

In this embodiment, when hot oxygen passes through the passages 72 and 73 ' formed by the passage forming member 69, the passage of the outermost passage portion closest to the housing 40 is obtained.
73 ' lastly, and further housing 40 and passage 7
Since an airtight space 89 is provided between 3 ' ,
The heat of oxygen is not transferred to the housing 40, and even if it is transferred, the amount of heat is small. Therefore, the surface temperature of the oxygen generator 71 of the fourth embodiment, that is, the surface temperature shown in FIG. The temperature of the housing 40 is low,
The surface temperature of the housing 40 is lower than that of the fourth embodiment and is leveled, so that the outer circumference of the oxygen generator 80 of the present embodiment can be kept at a low temperature, that is, the outer circumference does not become hot.

Also in this embodiment, the inner peripheral side of the oxygen generator 80, that is, the passage near the candle 32, is
Since the hot oxygen before cooling flows, the heat of the oxygen is transferred to the candle 32 through the candle holder 88 and the heat insulating material 36, so that the candle 32 is uniformly heated, so that the pyrolysis rate is slow and unsettled. Pyrolysis can be reliably performed even in a portion that is prone to be decomposed, so that oxygen can be reliably supplied to the outside in a predetermined temporal flow pattern.

Next, FIG. 25 and FIG. 2 for the eighth embodiment.
6 will be described, but the same parts as those in the above-described embodiment will be designated by the same reference numerals and detailed description thereof will be omitted.

In the oxygen generator 80 'of this embodiment, the right side of the candle 32 is supported by a candle holder 88 made of a substantially cup-shaped metal having a bottom on the side of the igniter F ", for example, stainless steel. The holder 88 is
A hole 88h at the center of the bottom is engaged with the center of the ignition device F ″, that is, the left end 44b ′ of the detonator holding member 44 ′, and projects outward in the radial direction on the side of the candle holder 88. A plurality of annular protrusions 88 formed in a ring shape
a, 88b, 88c, 88d, 88e, 88f, 88g
Is provided. These annular protrusions 88a, 88b, 8
8c, 88d, 88e, 88f, 88g, the passage 72 ' formed by the passage forming member 69 and the candle holder 88 is an annular passage 82a , 82b , 8
It is divided into 2c , 82d , 82e , and 82f . Furthermore, annular protrusions 88a, 88b, 88c, 88d, 88
Notches 88aa, 88 are provided in a part of e, 88f, 88g.
ba, 88ca, 88da, 88ea, 88fa, 88
Ga is provided and these notches 88aa, 88 are provided.
ba, 88ca, 88da, 88ea, 88fa, 88
ga is an adjacent annular protrusion 88a, 88b, 88c, 8
Notches 88aa, 88 of 8d, 88e, 88f, 88g
ba, 88ca, 88da, 88ea, 88fa, 88
It is provided at a position that is opposed to ga at a predetermined angle of 180 ° in this embodiment. That is, the annular protrusions 88a, 8
Notches 88aa, 88ca, 8 of 8c, 88e, 88g
8ea and 88ga are provided above the candle 32 in the figure, and notches 88ba, 88da and 88fa of the annular protrusions 88b, 88d and 88f are provided below the candle 32 in the figure.

Therefore, the generated oxygen passes through the gap r as shown by the arrow N in FIG.
8a to the annular passage 82a via the notch 88aa, turn the annular passage 82a to the left or right, pass through the notch 88ba of the annular protrusion 88b adjacent to the annular protrusion 88a, and form the annular passage. An annular passage 82 to the left of 82a
to b . In this way, oxygen is transferred to the annular passage 82.
Notches 88aa, 88ba, 88ca, 88d while swirling a , 82b , 82c , 82d , 82e , 82f.
In FIG. 25, the air flows axially to the right in the passage 72 ′ through a, 88 ea, 88 fa, and 88 ga. Then, the oxygen that has passed through the notch 88ga from the annular passage 82f flows to the passage 73 through the gap q , and further this passage
73 axially to the left, candle support 5
2 ″ and the filter 53, and is supplied to the outside from the oxygen supply means S ″.

In this embodiment, the generated oxygen is generated by the annular protrusions 88a, 88b, 88c, 88d, 88e, 88f,
88 g of annular passages 82a , 82b , 82c , 8
2d, 82e, has been the passage 72 'divided into 82f, these annular passages 82a, 82b, 82c, 82d, 82
Since the oxygen flows in the axial direction while swirling e , 82f , that is, the oxygen flowing in the passage 72 ' may have a long path even if the size of the oxygen generator 80' is the same as that of the above embodiment. Therefore, the oxygen flowing out from the passage 72 ′ is cooled more sufficiently than in the fourth to seventh embodiments, that is, when flowing into the passage 73 of the outermost passage portion closest to the housing 40. Since the high temperature oxygen is sufficiently cooled, even if the size of the housing 40 is left unchanged, the temperature of the housing 40 becomes lower, and the outer circumference of the oxygen generator 80 'does not become hot. In the case of the present embodiment as well, it is easily expected that the temperature of the housing 40 will be lower than the surface temperature of the housing 40 shown in FIG.

Further, in this embodiment, the oxygen generator 80 'is used.
The oxygen passing through the passage 72 ′ close to the candle 32 is high in temperature, and therefore the heat of the hot oxygen is transmitted to the candle 32 via the candle holder 88 and the heat insulating material 36 to the candle 32, so that the pyrolysis of the candle 32 is prevented. It does not stop on the way, it can be completely pyrolyzed, and oxygen can be reliably supplied to the outside in a pattern of a predetermined temporal flow rate.

Further, in the present embodiment, the generated oxygen is supplied to the annular passages 82a , 82b , 82c , 82d , 82e and 82.
Notches 88aa, 88ba, 88c while turning f
Since it flows in the axial direction through a, 88da, 88ea, 88fa, and 88ga, heavy dust and dirt are removed from the annular protrusions 88a, 88b, 88c, 88d, 88e, and 88.
Colliding with f and 88g, the annular passages 82a , 82b and 8
2c , 82d , 82e , and 82f . That is, the passage 72 'is formed into an annular passage 82a , 82b , 82c , 82.
By using d , 82e , and 82f , the effect of the filter can be obtained, and the load on the filter 53 can be reduced, so that the filter 53 can be downsized, thus contributing to downsizing of the oxygen generator 80 ′. To do.

In this embodiment, the annular protrusion 88a,
Notches 88aa, 88ba, 88ca, 88da provided in 88b, 88c, 88d, 88e, 88f, 88g,
88ea, 88fa, 88ga are adjacent notches 88
aa, 88ba, 88ca, 88da, 88ea, 88
Fa and 88ga are different from each other by 180 °, but this is because the passage 72 ' is divided into an undivided annular passage, so that the oxygen is annular passages 82a , 82b , 82c , 82.
Since it passes through d , 82e , and 82f in two paths, clockwise or counterclockwise, 180
However, the predetermined angle at which the notch is provided need not be limited to this. For example, as shown by the alternate long and short dash line in FIG. 26, for example, a plate-shaped partition wall 8 that extends axially in the annular passage 82a over the annular protrusion 88a and the annular protrusion 88b.
8x is provided to divide the annular passage 82a , and the partition wall 88x
Is arranged on the right side of the notch 88aa of the annular protrusion 88a, and further to the right of the partition wall 88x, the annular protrusion 8 is formed.
The cutout 88xa of 8b is provided (of course, the cutout 88ba shown by the solid line is not provided below at this time), and the oxygen passing through the cutout 88a is unidirectionally from one side of the partition wall to the other side, that is, configure path such that substantially round annular passage, the configuration other annular passage 82b, 82
c , 82d , 82e , 82f , in this case, further annular passages 82a , 82b , 82c , 82 are provided.
Since the path of oxygen passing through d , 82e , and 82f can be made longer, even if the size of the oxygen generator is not increased,
By the time it reaches the passage 73 which is the outermost passage portion, the oxygen having a high temperature is further cooled, so that even if the heat of the oxygen is transmitted to the housing 40, the housing 40 does not become hot.

Next, an oxygen generator 80 ″ according to a ninth embodiment of the present invention will be described with reference to FIGS. 27 and 28. The same parts as those in the above embodiment are designated by the same reference numerals, Detailed description thereof will be omitted.

In this embodiment, the candle holder 88 'supporting the right end of the candle 32 is made of the same material and has the same shape as the candle holder 88 of the above embodiment, and extends in the axial direction between the candle holder 88' and the passage forming member 69. An annular passage 72 " is provided. The candle holder 88 'of this embodiment includes:
As shown in FIG. 28, a plurality of ridges 88 a ′, 88 b ′, 88 c ′ that protrude radially outward and extend in the axial direction are arranged side by side at substantially equal angular intervals (four in the figure). Therefore, the annular passage 72 ″ is divided into a plurality of axial passages 92a 1 , 92b 2 , 92c extending in the axial direction. That is, the passage 72 ″ of the present embodiment has a ridge 88a ′.
De and 'axial passage 92a which is formed out with, protrusions 88b' ridges 88b and protrusions 88c 'and de-formed by the axial passage 92b and the protrusions 88c' and the ridges 88a ' It is formed of an axial passage 92c . Axial passage 92a ,
Since 92b and 92c are obtained by dividing the annular passage 72 ″ , they are on the same circumference concentric with the candle 32. Note that the right and left ends of the candle holder 88 ′ have diameters respectively. A plurality of protruding portions 88 protruding outward
d'and 88e 'are formed.

Further, the axially extending projection 88a 'extends to both ends of the candle holder 88', that is, is connected to the projections 88d 'and 88e', and the projection 88a is also formed.
Although b ′ has its left end connected to the protrusion 88e ′, its right end faces the center of the protrusion 88d ′ with a gap v . Furthermore, the protrusion 88c 'is
The left end portion is opposed to the central portion of the protruding portion 88e 'with a gap w , and the right end portion is connected to the protruding portion 88d'. The ridge portions 88a ′, 88 having such a shape
b ', 88c' and protrusions 88d ', 88e'
Axial passage 92a communicates with the axial passage 92b through the gap v at its right end portion, the axial passage 92b communicates with the axial passage 92c through the gap w at its left end.
The right end portion of the axial passage 92a has an opening 88ea 'for allowing oxygen to flow from the heat insulating material 36,
The left end of the axial passage 92c is an opening 88da 'for guiding oxygen to the passage 73 .

In this embodiment, the oxygen generated from the candle 32 flows to the left in the heat insulating material 36, reaches the left end of the heat insulating material 36, and then flows into the passage 72 ″ through the gap r .
In the passage 72 ″ , this oxygen first passes through the opening 88ea ′, as indicated by the arrow U, and passes through the axial passage 92a.
To the right, then through the gap v , this time in the axial passage
92b to the left, and further through the gap w to the axial passage.
92c to the right, and the opening 88d of the axial passage 92c .
Pass a '. That is, oxygen is guided to the right while diffracting axially in the passage 72 " , and then in the passage 72".
The oxygen that has passed through flows to the passage 73 that is the outermost passage portion through the void q , flows to the left in the passage 73 , passes through the candle support 52 ″ and the filter 53, and is discharged from the oxygen supply device S ″ to the outside. Is supplied to.

Also in the case of this embodiment, the length of the oxygen passage passing through the passage 72 " can be lengthened even if the size of the oxygen generator is unchanged, so that the passage 73 which is the outermost passage portion. Since the high temperature oxygen is sufficiently cooled by the time the temperature reaches, the housing 40 does not become hot as in the eighth embodiment, that is, the oxygen generator 8
The outer circumference of 0 "does not get hot. In other words,
The surface temperature of the housing 40 is the same as that of the housing 4 of the fourth embodiment.
Below the zero temperature (shown in Figure 14),
And it is easily recognized that they are leveled. Also, since hot oxygen passes near the candle 32,
The heat of oxygen is transmitted to the candle 32, so that there is no risk of the candle 32 becoming undecomposed, and therefore oxygen can be supplied to the outside in a predetermined temporal flow rate pattern.

Further, in this embodiment, three axial passages 9 are provided.
Although the oxygen flow path is formed by 2a , 92b , and 92c , the number of axial passages forming the oxygen flow path need not be limited at all.

Next, the tenth embodiment will be described with reference to FIG. 29. The parts corresponding to those in the above embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

The oxygen generator of this embodiment has a total of 9
No. 0, which has substantially the same structure as the first embodiment, but instead of the cylinder 37, is made of a material that is corrosion-resistant, reaction-inert and heat-resistant with respect to the candle 32, such as copper. The cylindrical body 37 ′ is covered with the heat insulating material 36.
The tubular body 37 'is formed with a thickness of approximately 0.1 mm like the tubular body 37, and the right end portion thereof is a candle holder 98 which is different from the candle holder 38 of the first embodiment only in its length. It is internally fitted, and its left end portion becomes a flange portion 37a 'and is engaged with the housing 40. Therefore, an annular space 93 is formed between the housing 40 and the tubular body 37 '. Further, the tubular body 37 'is provided with a plurality of cuts, and in the present embodiment, cuts are formed on the same circumference at equal pitches and on the plurality of circumferences by the cuts. This piece is bent so as to project into the space 93, and is formed as a fin 37b 'for heat dissipation. This heat-radiating fin 37b 'is a cylindrical body 37'.
In the above-mentioned portion where the temperature may be high, in this embodiment, since a large amount of oxygen is generated in the initial stage, that is, thermal decomposition is rapidly performed in the initial stage, the ignition side of the candle 32, that is, the right cylinder. There is a risk that the body 37 'will become hot, and therefore heat-radiating fins are densely provided on the right side of the tubular body 37', that is, the space between the right-side heat-radiating fins 37b 'is narrowed. Further, since the cylindrical body 37 'of this embodiment is made of thin copper as in the first embodiment, the portion which was the section and the fin 37b' becomes the opening 37c ', that is, the heat insulating material is provided through the opening 37c'. 36 and annular space 9
3 are connected. The ignition charge part 33 'of the candle 32 of this embodiment is composed of a component capable of generating a larger amount of oxygen than the ignition charge part 33 described above.

Next, the operation of the oxygen generator 90 of this embodiment will be described.

In use, as in the above embodiment,
It is removed from the hammer piston 48 together with the pin P, and the firing pin inserted through the radial hole in the direction perpendicular to this is removed. This allows the hammer piston 48
Moves to the left in the figure by the spring force of the spring 47, collides with the detonator 43, and generates a spark. This spark ignites the right end portion of the candle 32, that is, the ignition charge portion 33 ', and oxygen is generated by this thermal decomposition. The generated oxygen flows radially outward along the bottom surface of the candle holder 98, flows between the cylindrical body 37 ′ and the heat insulating material 36 and through the heat insulating material 36, and flows to the left side of the drawing. Is the cylinder 3
While flowing between 7 ′ and the heat insulating material 36 and passing through the heat insulating material 36, it flows into the space 93 through the opening 37 c ′ of the cylindrical body 37 ′.
However, since the inside of the oxygen generator 90 communicates with the outside via the oxygen generator supply device S ′, and the relief valve 55 opens when the inside of the oxygen generator 90 becomes high pressure, the space 93 Even if oxygen flows into the space of the heat insulating material 41, the generated oxygen does not flow into the space 93 and the space of the heat insulating material 41 after reaching the predetermined pressure, and the oxygen is generated between the tubular body 37 ′ and the heat insulating material 36. Through the heat insulating material 36, the heat insulating material 50, the circular opening 52a 'of the candle support 52' and the heat insulating material 51 to the filter 53. In the filter, dust and odors are removed, oxygen is made tasteless and odorless, as in the above-described embodiment, and oxygen is supplied to the outside through the oxygen supply device S ′.

In this embodiment, since the fins for heat dissipation are provided without increasing the weight of the tubular body 37 ', the tubular body 37' is provided.
Since oxygen passing between the heat insulating material 36 and the heat insulating material 36 and through the heat insulating material 36 is cooled through the fins 37b ′ for heat dissipation, the oxygen has a low temperature suitable for providing when supplied. Also,
Generated oxygen, but flows into the space space 93 and the heat insulating material 41 on the generated initial, space 93 and the heat insulating material 41
Once a certain amount of space is filled, then this space
Oxygen does not flow into the space between 93 and the heat insulating material 41. Therefore, the space 93 acts as a heat insulating material, and the heat of the high temperature oxygen filled in the housing 40 is transmitted to some extent in the initial stage of oxygen generation, but thereafter, the heat is not transmitted to the housing 40, and therefore, the heat is not transmitted to the housing 40. The outer circumference of the housing 40, that is, the outer circumference of the oxygen generator 90 does not become hot. Of course, since the heat of oxygen generated after the space 93 is filled with oxygen is transferred to the inside of the oxygen generator 90, the candle 32 can be heated and completely decomposed. Further, in this embodiment, since the fins 37b 'for heat dissipation are formed closely to each other on the right side of the cylindrical body 37', the generated oxygen can be efficiently cooled and the surface of the housing 40 can be cooled. The temperature can be leveled.

Although the cylindrical body 37 'and the candle holder 98 are separately provided in this embodiment, they may be integrated. In this case, the weight of the oxygen generator can be further reduced. In addition, in this embodiment, the cylindrical body 3
Although the fins for heat dissipation are densely provided on the right side of 7 ', the fins for heat dissipation are densely provided in the high temperature portion of the cylindrical body 37' due to the detailed structure, and the temperature of the housing 40 in the axial direction is The density of the fins for heat dissipation may be set so as to be constant, that is, to level the fins.

Although the respective embodiments of the present invention have been described above, the present invention is not limited to these and can be variously modified based on the technical idea of the present invention.

For example, in each of the above embodiments, the candle 3
In the configuration of No. 2, the main component is NaClO in this order from the ignition devices F ′, F ″ side to the oxygen supply devices S ′, S ″ side.
By changing the mixing ratio of ₃ and Fe, the time-flow rate pattern as shown in FIG. 34 was obtained. Of course, the pattern is not limited to this, and oxygen is required in a fire accident in a hospital or an underground mall, for example. In such a case, when oxygen is supplied at a constant flow rate after ignition, four layers, that is, the A layer of the ignition charge part 33, the B layer of the initiator part 34, and The effect of the present invention can be obtained even if the mixing ratio of NaClO ₃ and Fe in the entire candle 32 is constant without being composed of the C layer and the D layer of the main portions 35a and 35b.
That is, the oxygen generating agent of the present invention does not need to be limited to four layers, and if necessary, a plurality of layers of the oxygen generating agent sequentially have a small thermal decomposition rate from the ignition side. It is not necessary to have such a composition, and may be simply a plurality of layers in which the amount of change in oxygen generation is changed.

Further, in the above embodiments, NaClO ₃ and Fe were used as the oxygen generating agent, but of course, the known oxygen generating agent is applicable without being limited to this.

Further, in the above embodiments, the oxygen supply device S '
Outlet pipes 57a, 5 connected to the outside and supplying oxygen to the outside
The number of 7b is two, but of course, three or more may be connected depending on the usage situation. At this time, of course, depending on the oxygen supply time and the number of outlet pipes 57a, 57b connected to the oxygen supply device, the candle 32
Size changes.

Further, in the above embodiments, the cylindrical bodies 37, 37 'are used.
Although copper or stainless steel was used as the metal for use, other metals such as aluminum and platinum may be used without being limited thereto. Generally, the metal is corrosion-resistant and reaction-inert with respect to the oxygen generating agent, and is heat-resistant. A cylindrical body of any material can be applied as long as it has a property.

Further, in the above examples, the small piece of stainless steel was used, but any material may be used as long as it has a thermal conductivity of 30 W / (m · K) or more, such as carbon steel or carbon. It may be a mixture of steel and stainless steel.

Further, in the above first embodiment, the cylindrical bodies 37, 3
The thickness of 7'is set to 0.1 mm, which is considerably thin, but of course, a thicker cylinder may be used. However, the smaller the thickness as in the first embodiment, the more easily the heat can be transferred, and the more uniform heating and heat retention of the entire candle 32 can be made.

Furthermore, in the above-described first to third embodiments and the tenth embodiment, the ignition device F'as ignition means,
Although the oxygen supply device S ′ is used as the oxygen supply means, the ignition device F ″ may be used instead of the ignition device F ′, and the oxygen supply device S ″ may be used instead of the oxygen supply device S ′. . In this case, the effect obtained by using the ignition device F ″ and the oxygen supply device S ″ can be obtained.

Further, in the above-mentioned first to third and tenth embodiments, the oxygen supply device S'of the housing 40 is used.
The cover 60 covering the side opening includes a candle holder 52,
It is provided without being coupled to 52 ', but the cover 60 is coupled to the candle holders 52, 52' directly or through the housing 40 as in the fourth to ninth embodiments. , Cover 60 and candle holder 5
A filter 53 may be filled between the two and 52 '.

Furthermore, in the above-described fourth embodiment, sixth embodiment to ninth embodiment, the seismic resistant member 7 for improving seismic resistance is used.
Although 0 is provided, the seismic resistant member 70 may not be provided in order to reduce the weight. Even in this case, since the cover 42 'that is the first lid member covers the left side opening of the housing 40, the passage formed between the candle holder and the housing does not communicate with the outside, and therefore the seismic resistant member is not provided. Even if it is not provided, oxygen generated from the passage will not flow out.

Further, in the above fourth to ninth embodiments, only one passage forming member is sandwiched between the candle support 52a ″ supporting the left side of the candle 32 and the heat insulating material 50. However, a plurality of passage forming members may be provided. When a plurality of passage forming members are provided, a passage forming member sandwiched between a candle support and a heat insulating material, and a candle holder that supports the right side of the candle. By alternately combining the passage forming member provided between the ignition device and the ignition device so that hot oxygen flows inside the oxygen generator and oxygen cooled outside flows, that is, the candle 3
If the generated oxygen is allowed to flow from the passage close to 2 to the passage close to the housing 40, the effect of the present invention, that is, the housing 40 does not become hot, and the candle 32
It is possible to obtain the effect that the heat of high-temperature oxygen is transmitted to and the thermal decomposition does not stop midway.

When a plurality of passage forming members are provided, the first protrusion provided on the outer periphery of the candle holder forms the passage closest to the candle as in the sixth embodiment. The second projecting portion, which is pressed against the inner circumference of the passage forming member and is provided on the outer circumference of the passage forming member forming the outermost passage portion, is provided inside the housing (the closing member when the closing member is provided). In addition to being pressed into contact with the circumference, a projection portion that projects radially outward is provided at the end portion of the passage forming member provided inside, and the inner periphery of the passage forming member that covers the outside immediately outside of this passage forming member If the protrusions are brought into pressure contact with each other, the structure can be made even more excellent in earthquake resistance.

Further, in the above seventh embodiment, the closing member 79 is used.
Although the space 89 formed between the housing 40 and the housing 40 is a closed space by the cover 42 ', the seismic resistant member 70 for enhancing the earthquake resistance is the cover 42' and the closing member 79.
The space 89 may be provided as a closed space by the seismic resistant member 70. In addition, the closing member 79 may be provided with a fin for heat dissipation that protrudes into a closed space 89 formed between the closing member 79 and the housing 40. In this case, if the heat-radiating fins are densely provided on a portion of the closing member 79 which has a relatively high temperature when oxygen is generated, the generated oxygen can be efficiently cooled. Further, when oxygen is generated in the closed space 89 , a portion having a relatively high temperature on the closing member 79 has a high density, and a portion having a relatively high temperature on the closing member 79 has a low density. Wool consisting of, for example, steel wool may be filled.

Further, in the above eighth and ninth embodiments, the passage 73 which is the outermost passage portion is provided between the housing 40 and the passage forming member 69. However, as in the seventh embodiment, A space may be provided on the outer periphery of the outermost passage portion, and in this case also, when oxygen passes through the passage, if the passage 73 , which is the outermost passage portion, is passed last, the above-described effect is obtained. To be

In the eighth and ninth embodiments, the passages 72 ' and 72 " are divided into annular passages 82a and 82a .
82b , 82c , 82d , 82e , 82f , or axial passages 92a , 92b , 92c are candle holders 88.
Annular protrusions 88a, 88b, 88c, 88 formed on the
d, 88e, 88f, 88g, or candle holder 8
8'provided with a plurality of ridges 88a ', 88b', 88
c'and the protrusions 88d 'and 88e' are formed, the passage forming member 69 is provided with a plurality of annular protrusions, which are notched inwardly, or a plurality of protrusions and protrusions. It may be provided to divide the passages 72 ' , 72 " , or it may be provided in the candle holder and the passage forming member so that the passages 72' , 72" are divided when combined.

[0133]

According to the oxygen generator of the present invention, the temperature of the housing can be greatly reduced as compared with the conventional one, and the entire decomposition can be surely performed after the oxygen generating agent is ignited and until the thermal decomposition is completed. Therefore, it is possible to stabilize the flow rate pattern without discontinuing the decomposition and running out of oxygen in the middle, and further to reduce the amount of heat insulating material used and the cost of the device.

[Brief description of drawings]

FIG. 1 is a sectional view of an oxygen generator according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of the same main part.

3 is a cross-sectional view taken along line [3]-[3] in FIG.

4 is a cross-sectional view taken along the line [4]-[4] in FIG.

FIG. 5 is a cross-sectional view showing a state of the candle after using the oxygen generator.

FIG. 6 is a sectional view of an oxygen generator according to a second embodiment of the present invention.

FIG. 7 is an exploded perspective view of a main part of the oxygen generator.

8 is a cross-sectional view taken along the line [8]-[8] in FIG.

9 is a cross-sectional view taken along the line [9]-[9] in FIG.

FIG. 10 is a cross-sectional view showing a state of the candle after using the oxygen generator.

FIG. 11 is a sectional view of an oxygen generator according to a third embodiment of the present invention.

FIG. 12 is an enlarged perspective view of stainless small pieces added to the oxygen generating agents of the first to third embodiments.

FIG. 13 is a sectional view of an oxygen generator according to a fourth embodiment of the present invention.

FIG. 14 is a diagram showing a surface temperature of an oxygen generator according to a fourth embodiment of the present invention and a surface temperature of an oxygen generator according to a conventional example.

FIG. 15 is a sectional view of an oxygen generator according to a fifth embodiment of the present invention.

FIG. 16 is an exploded perspective view of a main part of the oxygen generating agent.

FIG. 17 is a sectional view of an oxygen generator according to a sixth embodiment of the present invention.

18 is a cross-sectional view taken along the line [18]-[18] in FIG.

19 is a cross-sectional view taken along line [19]-[19] in FIG.

FIG. 20 is a sectional view of an oxygen generator according to a first modified example of the sixth embodiment of the present invention.

21 is a cross-sectional view taken along the line [21]-[21] in FIG.

22 is a cross-sectional view taken along the line [22]-[22] in FIG.

FIG. 23 is a sectional view of an oxygen generator according to a second modification of the sixth embodiment of the present invention.

FIG. 24 is a sectional view of an oxygen generator according to a seventh embodiment of the present invention.

FIG. 25 is a sectional view of an oxygen generator according to an eighth embodiment of the present invention.

FIG. 26 is a partial perspective view of a main portion in FIG.

FIG. 27 is a sectional view of an oxygen generator according to a ninth embodiment of the present invention.

28 is a partial perspective view of a main portion in FIG. 27. FIG.

FIG. 29 is a sectional view of an oxygen generator according to a tenth embodiment of the present invention.

FIG. 30 is a cross-sectional view of a conventional oxygen generator.

31 is a cross-sectional view taken along the line [31]-[31] of FIG. 30.

32 is a cross-sectional view taken along the line [32]-[32] in FIG.

FIG. 33 is a cross-sectional view showing a state of a candle used in the same apparatus during thermal decomposition.

FIG. 34 is a diagram showing an example of a time-oxygen flow rate pattern.

[Explanation of symbols]

31 Oxygen generator 31 'Oxygen generator 31 "Oxygen generator 32 Candle 37 Cylinder 37' Cylinder 38 'Candle holder 38" Candle holder 39 Space 39' Space 39 " Space 40 Housing 42 'Cover 52" Candle support 60' Cover 68 candle holder 69 passage forming member 71 oxygen generator 71 'oxygen generator 71 "oxygen generator 72 passage 72 ' passage 72 " passage 73 passage 73 'passage 75 oxygen generator 75' oxygen generator 80 oxygen generator 80 ' Oxygen generator 80 "Oxygen generator 90 Oxygen generator F'Ignition device F" Ignition device S'Oxygen supply device S "Oxygen supply device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tadahiro Taruma 151 Sakaue, Aboshi-ku, Himeji City, Hyogo Prefecture (72) Inventor Shigeto Miyazaki 2-191 Yamate, Aioi City, Hyogo Prefecture

Claims (27)

[Claims] 1. A cylindrical heat insulating material (36) filled with an oxygen generating agent (32) is supported at its both ends by a supporting member (38, 52) made of metal, and the supporting member is provided on one side of the supporting member. Ignition means (F ′) and oxygen supply means (S ′) on the other side are provided, and the heat insulating material (36) and the support members (38, 52) are housed in a cylindrical housing (40) made of metal. In the oxygen generator (31), the tubular heat insulating material (36)
The outer periphery of the cylindrical body (37) is covered with a cylindrical body (37) made of a material that is corrosion-resistant, reaction-inert, and heat-resistant with respect to the oxygen generator (32), and A tubular space ( 39 ) is formed between the tubular body (37) and the housing (40), and oxygen generated by thermal decomposition of the oxygen generating agent (32) by the operation of the ignition means (F ′) is generated. Through the gap between the heat insulating material (36) and the heat insulating material (36),
An oxygen generator characterized in that it is supplied to the outside through the oxygen supply means (S '). 2. A cylindrical heat insulating material (36) filled with an oxygen generating agent (32) is supported at both ends by supporting members (38 ′, 38 ″, 52 ′) made of metal, and the supporting member is made of metal. A cylinder in which an ignition means (F ') is provided on one side of the member and an oxygen supply means (S') is provided on the other side, and the heat insulating material (36) and the support members (38 ', 38 ", 52') are made of metal. Generators (31 ', 3', housed in a cylindrical housing (40)
1 "), both support members (38 ', 38", 5
2 ') of the supporting means (38', 3'on the side of the ignition means)
8 ″) is made of a material having corrosion resistance, reaction inertness and heat resistance with respect to the oxygen generating agent (32), and has a cylindrical shape having a bottom portion on the ignition means (F ′) side, The oxygen generating agent (32) extends to the oxygen supply means (S ′) side so as to cover the entire oxygen generating agent (32) through a heat insulating material (36), and between the housing and the housing (40).
An airtight space ( 39 ' , 39 " ) is formed, and oxygen generated by thermal decomposition of the oxygen generating agent (32) by the operation of the ignition means (F') is generated on the ignition means side. Support member (38 ', 38 ") and said heat insulating material (36)
An oxygen generating device, characterized in that it is supplied to the outside through the oxygen supply means (S ′) after passing through the gap and the heat insulating material (36). 3. A support member (38, 3) on the ignition means side.
8 ″) has an enlarged diameter at the end on the oxygen supply means (S ′) side, and the end is on the support member (5) on the oxygen supply means side.
The oxygen generator according to claim 2, which is sandwiched between the outer peripheral end of 2 ') and the housing (40). 4. A cylindrical heat insulating material (36) filled with an oxygen generating agent (32) is supported at its both ends by a supporting member (98) made of metal, and an ignition means is provided on one side of the supporting member. (F '), an oxygen generator provided with oxygen supply means (S') on the other side, and the heat insulating material (36) and the supporting member (98) are housed in a cylindrical housing (40) made of metal. In (90), the outer periphery of the cylindrical heat insulating material (36) is formed of a cylindrical body (37 ') made of a material that is corrosion resistant, reaction inert and heat resistant to the oxygen generating agent (32). The tubular body (37 ') is covered with a plurality of cuts to form a segment, and the segment (37b') is formed into the tubular body (3 ').
7 ') and the housing (40) are bent into a cylindrical space ( 93 ) formed to radiate the fins (37).
b ′), and oxygen generated by thermal decomposition of the oxygen generating agent (32) by the operation of the ignition means (F ′) and the heat insulation between the tubular body (37 ′) and the heat insulating material (36) An oxygen generator characterized in that it is supplied to the outside through the material (36) and the oxygen supply means (S '). 5. A supporting member (68, 68 ′, 78, 78 ′, 78 ″, 88) made of metal at both ends of a cylindrical heat insulating material (36) filled with an oxygen generating agent (32). 8
8 ', 52 "), the ignition means (F") is provided on one side of the support member, and the oxygen supply means (S ") is provided on the other side, and the heat insulating material (36) and the support member (68, 68 ', 7
8, 78 ', 78 ", 88, 88', 52") is housed in a cylindrical housing (40) made of metal (71, 71 ', 71 ", 75, 75'80, 8
0 ′, 80 ″), the first lid member (4) that covers the opening of the housing (40) on the ignition means (F ″) side.
2 ') is provided, and both support members (68, 68', 78,
78 ', 78 ", 88, 88', 52"), the supporting member (68, 68 ', 78, 78', 7) on the ignition means side.
8 ″, 88, 88 ′) is a cylinder having a bottom portion on the side of the ignition means (F ″), which is made of a material that is resistant to corrosion, is inert to the oxygen generator (32), and is heat resistant. A support member (68, 6) having a shape and extending toward the oxygen supply means (S ″) so as to cover the oxygen generating agent (32) through the heat insulating material (36) and on the ignition means side.
8 ', 78, 78', 78 ", 88, 88 ') and a passage ( 72 , 72' , 72" , 73 , 73 ' ) for guiding an axial flow between the housing (40). A passage forming member (69, 69 ′, 69 ″) is provided to generate oxygen generated by thermal decomposition of the oxygen generating agent (32) by the operation of the ignition means (F ″) on the ignition means side. Support members (68, 68 ', 78, 78', 78 ", 8
After passing through the gap between the heat insulating material (36) and the heat insulating material (36), the passages ( 72 , 72 ′ ,
72 " , 73 , 73 ' ), the housing (4
0) The oxygen generator is characterized in that after the last passage through the outermost passage portions ( 73 , 73 ' ) closest to 0), the oxygen is supplied to the outside through the oxygen supply means (S "). 6. An outer periphery of the outermost passage portion ( 73 ′ ) is formed by a closing member (79), and the oxygen generating agent (32) is provided between the closing member (79) and the housing (40). 6. The oxygen generator according to claim 5, wherein an airtight space ( 89 ) is provided with respect to (1). 7. A plurality of cutouts (68a ') are provided at an end of a support member (68') on the ignition means side, and the end is brought into contact with the passage forming member (69). Alternatively, the oxygen generator according to claim 6. 8. A support member (78, 7) on the ignition means side.
8 ') is provided with a first ridge portion (78b, 78b') projecting radially outward near the end of the first ridge portion (78).
b, 78b ') forming the passage ( 72 ) closest to the oxygen generating agent (32).
9 ') and a second ridge portion radially outwardly protruding near the end of the passage forming member (69') forming the outermost passage portion ( 73 ). 69b '), and the second protrusion (69') is connected to the housing (4).
The oxygen generator according to claim 5 or 6, which is brought into contact with the inner circumference of (0) or the inner circumference of the closing member. 9. A notch (88aa, partially formed in the passage forming member and / or the supporting member (88) on the ignition means side.
88ba, 88ca, 88da, 88ea, 88fa,
A plurality of radially projecting annular protrusions (88a, 88b, 88c, 88d, 88e, 88f,
88g), and the adjacent annular protrusions (88a, 88)
b, 88c, 88d, 88e, 88f, 88g) said notches (88aa, 88ba, 88ca, 88d)
a, 88ea, 88fa, 88ga) are provided with a predetermined angle shift, and the oxygen generator according to any one of claims 5 to 7. 10. A plurality of axially extending ridges (88a ', 88b', 88c ') provided on the passage forming member and / or the ignition member side supporting member (88'). A plurality of axial passages ( 92 ) that are concentric with the oxygen generating agent (32) and extend in the axial direction.
a , 92b , 92c ) to the passages ( 72 ″ , 73 )
The oxygen generator according to claim 5, wherein the oxygen generator is formed. 11. A support member (68, 6) on the ignition means side.
8 ', 78, 78', 78 ", 88", 88, 88 ') is provided with a metal plate-shaped seismic resistant member (70) which engages with the ignition means (F ") at the center and is provided with The peripheral portion (70a) of the member and the peripheral portion (4) of the first lid member (42 ').
2a ') is engaged with the housing (40), and the peripheral portion (70a) of the seismic member and the peripheral portion (42a') of the first lid member are directly or in the housing (40). The oxygen generation device according to any one of claims 5 to 10, wherein the oxygen generation device is coupled via a. 12. The seismic resistant member (70a) is a support member (68, 68 ', 78, 78', 7) on the ignition means side.
The oxygen generator according to claim 11, which has a shape (70b) conforming to the shape of the ignition means side of 8 ", 88, 88 '). 13. The space ( 39 , 39 ′ , 39 ″ , 8)
9 ) is formed between the tubular body (37) and the housing (40), or the supporting member (3) on the ignition means side.
8 ', 38 ") or the outer periphery of the closing member (79) is provided with a plurality of heat radiation fins so as to project into the space ( 39 , 39' , 39" , 89 ). The oxygen generator according to claim 3 or claim 6. 14. The heat dissipating fins are provided on the cylindrical body (3).
7, 37 '), or the supporting member (3) on the ignition means side.
8 ', 38 "), or a portion of the closing member (79) having a relatively high temperature, which is densely formed, and has the cylindrical body (37, 3).
7 '), or the supporting member (38', 3 on the ignition means side,
8 ") or a relatively low temperature portion of the closure member (79) is formed sparsely so that the temperature of the outer periphery of the housing (40) is leveled. The oxygen generator according to. 15. The space ( 39 , 39 ′ , 39 ″ , 8)
9 ), in the cylindrical body (37), the supporting member (38 ', 38 ") on the ignition means side, or the portion of the closing member (79) having a relatively high temperature, with a high density, 7. The oxygen generator according to claim 1, wherein a portion of the housing (40) having a relatively low temperature is filled with wool made of metal at a low density. . 16. The ignition agent part (33), the initiator part (34), and the main parts (35a, 35) of the oxygen generating agent (32) are sequentially reduced in the amount of oxygen generated from the ignition means (F ′) side.
16. The method according to claim 1, further comprising b), wherein oxygen is supplied to the outside in a pattern of a predetermined temporal flow rate by sequentially performing thermal decomposition from the ignition charge part (33). Oxygen generator. 17. The oxygen generating agent (3) is provided at both ends of a cylindrical heat insulating material (36) filled with the oxygen generating agent (32).
2) Support members (38, 38 ', 38 ", 52, 5 made of a material that is corrosion-resistant, reaction-inert, and heat-resistant.
2 '), the ignition means (F') is provided on one side of the support member, and the oxygen supply means (S ') is provided on the other side, and the heat insulating material (36) and the support members (38, 38', Three
8 ", 52, 52 ') is housed in a cylindrical housing (40) made of metal, and the oxygen generating agent (32) is oxygen containing alkali metal chlorate or alkali metal perchlorate as a main component. In the generator, the oxygen generating agent (32)
An oxygen generator characterized in that a small piece made of a material having a thermal conductivity of 30 W / (m · K) or more is added to. 18. The oxygen generating agent (32) further comprises a transition metal powder such as iron as an accessory component, and is composed of a plurality of layers (A, B, C, D) having different compositions, and at least one of these layers. 18. The oxygen generator according to claim 17, wherein 1 to 10% by weight of the small piece is added to. 19. The oxygen generator (32) further comprises a transition metal powder such as iron as a sub-component, and is composed of a plurality of layers (A, B, C, D) having different compositions, and the small pieces are composed of the plurality of layers. The oxygen generator according to claim 17 or 18, wherein 1 to 10% by weight is added to at least the last layer (D) of the layers when viewed from the ignition side. 20. The small piece is formed by cutting a strip having a small cross section at a predetermined pitch in the longitudinal direction.
20. The oxygen generator according to claim 19. 21. The oxygen generator according to claim 17, wherein the small piece is made of stainless steel and / or carbon steel. 22. The oxygen generator according to claim 17, wherein the size of the small piece is 10 to 30 μm thick, 80 to 120 μm wide, and 1 to 5 mm long. 23. The oxygen generator according to claim 1, wherein the oxygen generator (32) contains calcium peroxide. 24. The oxygen generator according to claim 1, wherein the material is copper or stainless steel. 25. The ignition means (F ″) is a detonator (4).
3) and a hammer piston (4) for colliding with the detonator support member (44 ') having the detonator (43) installed therein.
8) and a cylinder (46 ') having a spring (47) for urging the spring (47) therein, and the detonator support member (44') is integrated with the cylinder (46 ') by caulking. 25. The oxygen generator according to any one of claims 1 to 24, which is configured as a unit. 26. The oxygen supply means (S ″) has a valve seat forming member (74) and a valve body (61 ′), and has a substantially conical shape at one end of the valve seat forming member (74). Valve seat (74
aa), and the valve body has a conical end (61a ') that seats on and off the valve seat, at which end the valve body (61') has the valve seat (74aa). 26.) Oxygen generation according to any one of claims 1 to 25, wherein an annular sealing member (77) for sealing the valve body (61 ') and the valve seat (74aa) when seated on apparatus. 27. A second lid member (60 ′) for covering an opening of the housing (40) on the oxygen supply means (S ″) side.
Directly with the support member (52a ″) on the oxygen supply means side,
Alternatively, the filter (53) may be filled between the second lid member (60 ′) and the oxygen supply means side support member (52a ″) by coupling through the housing (40). The oxygen generator according to any one of claims 1 to 26.