JPH0942504A - Gas combustor with safety valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To positively suspend the supply of a fuel gas by detecting earthquake on the occurrence of the earthquake without requiring a control circuit and the like and to easily, visually confirm an operating state. SOLUTION: A gas combustor body 11 is composed of a ball 1 consisting of a magnetic substance, a ball seat 3 for isolating the ball 1 from a gas passage 10 and having a ball-holding surface, freely movablly holding the ball 1, in a substantially convex surface shape, and is constituted so that the position of the ball 1 may visually be assured. Installed are a ball case 9, a valve plug mechanism part 8 providing substantially upward, downward reciprocation at the lower part of the ball seat 3, and having a permanent magnet 5 at its upper part, and a valve plug 7 at its lower part, a valve seat 6 connected to and separated from the valve plug 7, energizing means 12 for isolating the permanent magnet 5 from the ball 1 when vibration, inclination or the like are generated and for pressing the valve plug 7 against the valve seat 6, state indicating means 21 for indicating an operating state, and a safety valve 30 having a resetting mechanism 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas combustion instrument, and more particularly to a gas combustion instrument with a safety valve capable of detecting an earthquake and reliably stopping the supply of fuel gas. It is a thing.

[0002]

2. Description of the Related Art For example, a table stove that uses combustible gas as a fuel has a built-in safety device that combines a thermocouple and a solenoid valve (safety valve). The thermocouple circuit uses mercury as a vibration sensor for earthquakes. Switch (When two electrodes are connected via mercury and mercury vibrates due to vibration and one of the electrodes stops contacting mercury,
There is a switch in which a switch (FF) is built in series and the solenoid valve is closed when the mercury switch is cut off in the event of an earthquake so that the supply of fuel gas is stopped in the event of an earthquake.

Further, in a gas appliance for electrically controlling fuel gas, such as a gas fan heater, a mercury switch is incorporated in the control circuit, and when the mercury switch detects occurrence of an earthquake or fall of the appliance. The supply of fuel gas is stopped.

There is also a so-called microcomputer meter in which a mercury switch is incorporated and a solenoid valve in the microcomputer meter is turned off to stop the fuel gas supply when an earthquake occurs.

[0005]

However, as described above, providing the mercury switch in the thermocouple circuit causes an increase in the internal resistance value of the thermocouple circuit, which adversely affects the original performance and quality. There is a problem.

Further, a method of incorporating a mercury switch as an earthquake sensor into an appliance that is electrically controlled, such as a gas fan heater, is a preferable method for ensuring safety, but the electrical control Gas stoves that are not used have the problem that they cannot be applied as they are due to economic restrictions.

Further, in the method of incorporating a mercury switch or the like in the microcomputer meter to shut off the fuel gas in the event of an earthquake, it takes time until the combustion of the gas appliance is stopped because of the residual pressure in the fuel gas pipe. However, there is a problem of low reliability.

The present invention solves the above problems, and it is possible to detect the occurrence of an earthquake and reliably stop the supply of fuel gas without the need for a control circuit or the like. It is also an object of the present invention to provide a highly reliable gas combustion instrument with a safety valve, which enables easy visual confirmation of the operating state of the safety valve.

[0009]

In order to achieve the above object, the gas combustion instrument with a safety valve according to the first invention of the present application is (a)
A gas combustion instrument body for burning fuel gas, and (b) a vibration sensor attached to the outside of the gas combustion instrument body, which detects when vibration or tilt occurs and supplies the fuel gas to the gas combustion instrument body. It is a safety valve that is stopped, and is characterized by including a state display means for displaying an operating state and a safety valve having a reset mechanism for returning from an operating state to a usable state.

A gas combustion instrument with a safety valve according to a second aspect of the present invention is (a) a gas combustion instrument body for burning fuel gas, and (b) a ball made of a magnetic material attached to the gas combustion instrument body. A ball seat for movably holding the ball, and a permanent magnet disposed below the ball seat so as to reciprocate in a substantially vertical direction and directly or indirectly attached to the upper part by the permanent magnet, A valve body mechanism section provided with a valve body that separates from and contacts the following valve seat, and a valve that is provided in a part of a gas passage through which fuel gas passes, and opens and closes the gas passage by separating and contacting the valve body. When the ball is stationary with no vibration or tilt, the attraction force of the permanent magnet is larger than the urging force, and the permanent magnet is attracted to the ball to open the gas passage. To be in When a force that causes the ball to float on the ball seat due to movement or tilting,
A biasing means that overcomes the attraction force of the permanent magnet, separates the permanent magnet from the ball, presses the valve body against the valve seat, and closes the gas passage, and a mode that can be visually confirmed. In the closed state where the permanent magnet is separated from the ball and the valve body is pressed against the valve seat, the permanent magnet is separated from the valve seat and the permanent magnet is displayed. And a safety valve having a reset mechanism for returning to the open state by adsorbing to the ball.

Further, the safety valve isolates the ball from the gas passage by the ball seat, holds the ball freely on the substantially convex ball holding surface of the ball seat, and visually checks the position of the ball. It is housed in a ball case made of a material that can be confirmed, and the operating state of the ball can be confirmed by visually observing the position of the ball. It has a feature.

Further, the safety valve changes the position or posture of the status display portion according to the magnetized state of the ball by utilizing the difference in the degree of magnetizing the ball or the presence / absence of magnetism depending on the positional relationship between the ball and the permanent magnet. The feature is that the operating state is displayed.

Further, the main body of the gas combustion appliance is characterized in that it is not provided with an electric control means for starting and stopping combustion and adjusting the combustion state.

[0014]

In the gas combustion instrument with a safety valve according to the first aspect of the present invention, the safety valve attached to the gas combustion instrument body is
When vibrations or tilts occur, they are detected and the supply of fuel gas to the gas combustion equipment body is stopped, so it is possible to reliably stop the combustion of the gas combustion equipment body when an earthquake occurs. . Further, the operating state of the safety valve can be visually confirmed from the outside by the state display means, and the resetting means can easily return from the operating state to the usable state, so that high convenience and safety can be achieved at the same time. Will be realized.

Further, in the gas combustion instrument with a safety valve according to the second aspect of the present invention, when an earthquake occurs and the gas combustion instrument or the like having the safety valve attached thereto vibrates or tilts, the ball floats on the ball seat at the same time. , The urging means overcomes the attraction force of the permanent magnets constituting the valve body mechanism section, separates the permanent magnets attracted to the ball through the ball seat from the ball, and moves the valve body mechanism section toward the valve seat. , The valve element disposed below the valve element mechanism is pressed against the valve seat. As a result, the gas passage is blocked, so that the supply of fuel gas to the gas combustor is reliably stopped. Further, since the valve body is pressed against the valve seat by the biasing means, even if the vibration continues or the gas combustion appliance rolls, the gas passage is kept closed and the fuel gas flows out. It is possible to reliably prevent this. Further, since the state display means for displaying the operating state in a manner that can be visually confirmed is provided, it becomes possible to easily and surely confirm the operating state, and the state in which the safety valve is operated is gas burned. When it is confirmed that the safety valve is working and it is not mistaken for a failure of the equipment, the reset mechanism easily resets the safety valve to promptly bring the gas combustion equipment into a usable state. It will be possible to recover.

Further, as a safety valve, the ball is separated from the gas passage by a ball seat, and the ball is movably held on a ball holding surface of the ball seat having a substantially convex shape, and the position of the ball is visually confirmed. In the case of a gas combustion instrument using a safety valve that is housed in a ball case made of a material that can be used, it is possible to easily confirm the operating state by visually observing the position of the ball. Can be more effective.

In a safety valve in which a ball is separated from a gas passage by a ball seat, a transparent material such as resin or glass, which is generally inferior in heat resistance and mechanical strength to metal, is used as a constituent material of a ball case. Even if there is a problem, there is no fear of gas leakage and sufficient reliability can be secured. Further, in this safety valve, as the constituent material of the ball case, in addition to a transparent material such as resin or glass, it is possible to use a punching plate or a mesh material having a hole through which the inside can be visually observed.

Further, as the safety valve, by utilizing the difference in the degree to which the ball is magnetized depending on the positional relationship between the ball and the permanent magnet or the presence / absence of magnetism, the position or posture of the status display portion is changed according to the magnetized state of the ball. By using a safety valve that displays the operating state, it becomes possible to easily confirm the operating state.
The present invention can be made more effective. In this case, there is a feature that the safety can be secured without separating the ball from the gas passage by the ball seat.

Further, when the present invention is applied to a gas combustion appliance which does not have an electric control means for starting, stopping combustion and adjusting the combustion state, the structure is complicated and the cost is significantly increased. It is possible to obtain a highly efficient and highly reliable gas combustion appliance without any trouble.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION The features of the present invention will be described in more detail below with reference to the following examples as embodiments of the present invention.

[Embodiment 1] FIG. 1 is a plan view showing a gas combustion appliance with a safety valve according to an embodiment of the present invention.
FIG. 2 is an enlarged view showing the main part thereof.

The gas combustion instrument with a safety valve of this embodiment is
In particular, the gas combustion appliance body 11 is not equipped with electric control means for starting and stopping combustion, adjusting combustion conditions, and the like.
A gas cooker 32 for supplying a fuel gas from a gas source cock 31 to a gas combustion instrument body 11 by a table stove configured by attaching a safety valve 30 to the gas combustion instrument main body 11.
Is connected to the gas intake port 10a that constitutes a part of the safety valve 30, and is used.

As shown in FIG. 3, the safety valve 30 includes a ball 1 made of a magnetic material such as iron or stainless steel,
Visually check the position of the ball seat 3 that holds the ball 1 movably and that is made of a non-magnetic material and has a circular planar shape and a convex upper surface, and the ball 1 that is movably held by the ball seat 3. A ball case 9 made of an acrylic resin, which can be confirmed, and a cylindrical valve guide 2 disposed below the ball seat 3 are reciprocated in the central axis direction (vertical direction) thereof ( (Sliding) valve body mechanism section 8 arranged freely and gas passage 1 communicating with gas intake port 10a
Valve seat 7 which is provided in a part of 0, and which opens and closes the gas passage 10 when the valve body 7 constituting the valve body mechanism portion 8 is brought into contact with and away from the valve seat 6, and when the ball 1 stands still The ball 1 is adsorbed to the ball 1 through the seat 3 and allows the gas passage 10 to be in the open state.
When a force that causes the ball to move upward is applied, the permanent magnet 5 is pulled away from the ball 1, and the biasing means 12 that presses the valve body 7 against the valve seat 6 to close the gas passage 10 and the permanent magnet 5 are removed from the ball 1. When the valve body 7 is separated (that is, the attraction state between the permanent magnet 5 and the ball 1 is released) and the valve body 7 is pressed against the valve seat 6, the valve body 7 is separated from the valve seat 6 and the permanent magnet 5 is moved to the ball 1 side. And a reset mechanism 14 for returning to the open state by adsorbing to the.

In the safety valve 30, the reset mechanism 14 is arranged so as to project below the valve body 15 and pushes up the valve body mechanism portion 8 to attract the permanent magnet 5 to the ball. , Reset rod 1
Reset spring 18 for urging 9 downward and holding it at a predetermined position, and reset lever 18 for pushing up reset rod 19 via seesaw plate 20 supported by rotating shaft 16 by pressing downward. 1
7 are provided.

In the safety valve 30, the ball 1, the ball seat 3, and the ball case 9 described above are the safety valve 3.
The state display means 21 for displaying the operating state of 0 is configured.

The valve body mechanism portion 8 has a small diameter portion 4a formed on an upper portion of the rod 4 made of a magnetic material such as iron.
A valve body made of an elastic material (rubber in this embodiment) for externally inserting a ring-shaped permanent magnet 5 in which a through hole 5a is formed, connecting the two by a magnetic force thereof, and connecting and disconnecting with a valve seat 6 at a lower portion. It is formed by attaching 7. Further, a resin spring bearing 13 having a cylindrical shape and a large diameter portion whose lower portion covers the upper portion of the valve body 7 is externally inserted to the rod 4, and between the permanent magnet 5 and the valve body 7. Is sandwiched between.

Further, a coil spring is used as the urging means 12, which is externally inserted into the valve body mechanism portion 8 and the ball seat 3
It is fitted between the lower surface side step portion of the ball seat supporting member 3a for supporting the spring seat 13 and the spring receiver 13. The urging means 12 urges the valve element 7 downward via the spring bearing 13, and the gas combustion instrument body 1 to which the safety valve 30 is attached.
When there is no vibration or inclination in 1 and the ball 1 is stationary, the attraction force of the permanent magnet 5 is larger than its urging force (the force that the urging means (coil spring) 12 tries to expand). The permanent magnet 5 is attracted to the ball 1 so that the gas passage 10
Is allowed to be in an open state, but when a force such that the ball 1 floats on the ball seat 3 due to vibration or inclination occurs, the attraction force of the permanent magnet 5 is overcome and the permanent magnet 5 is moved. It is configured to separate from the ball 1 and press the valve body 7 against the valve seat 6.

In the safety valve 30 used in this embodiment, the balls 1 and the permanent magnets 5 are attracted to each other via the rod 4 made of a magnetic material (that is, the upper end of the rod 4 is the ball seat 3). However, it goes without saying that the ball seat 3 and the permanent magnet 5 may be directly brought into contact with each other.

Next, the safety valve 30 constructed as described above.
The operation of will be described. For example, when an earthquake occurs and the gas combustion appliance body 11 to which the safety valve 30 is attached vibrates, as shown in FIG. 4, the ball 1 floats on the ball seat 3 and, at the same time, the biasing means (coil spring) 12 moves. The permanent magnet 5 that overcomes the attraction force of the permanent magnet 5 that constitutes the valve body mechanism portion 8 is pulled away from the ball 1, the valve body mechanism portion 8 is moved toward the valve seat 6, and The mounted valve element 7 is pressed against the valve seat 6 to shut off the gas passage 10.

Then, as described above, when the attracting state of the permanent magnet 5 and the ball 1 is released and the permanent magnet 5 of the valve body mechanism portion 8 is separated from the ball 1, the ball 1 has a substantially convex ball seat. Since the ball 3 rolls to the peripheral portion, the position of the ball 1 in the ball case 9 is visually observed (that is, by the state display means 21), and the safety valve 30 is activated to block the gas passage 10. Can be recognized easily and reliably. Therefore, the safety valve 30
It is possible to reliably prevent the operating state of the engine from being mistaken for a failure of the gas combustion appliance.

Further, in the closed state where the safety valve 30 is operated, the valve body 7 is pressed against the valve seat 6 by the biasing means (coil spring) 12, so that further vibration continues or the gas combustion appliance rolls. Even in the case of occurrence, the gas passage 10 can be surely kept closed to prevent the fuel gas from flowing out.

Next, the operation of resetting the safety valve 30 will be described. When the permanent magnet 5 is pulled away from the ball 1, the valve body 7 is pressed against the valve seat 6 and the gas passage 10 is closed (closed state), the reset lever 17 is pressed downward as shown in FIG. Then, the seesaw plate 20 rotates to raise the reset rod 19, and the stepped portion 19a of the rod 4 constitutes the valve body mechanism portion 8.
It contacts with the lower part of the valve body and pushes up the valve body mechanism portion 8 upward. As a result, the valve body 7 is separated from the valve seat 6 and the gas passage 10 is opened, the permanent magnet 5 of the valve body mechanism portion 8 is attracted to the ball 1, and the upper end portion of the rod 4 is the lower surface of the ball seat 3. Is held in contact with. And at this time, the valve body 7
Is separated from the valve seat 6 and the gas passage 10 is opened. After that, the reset rod 19 is replaced by the reset spring 18
The restoring force (elastic force) causes the safety valve 30 to return to the usable state as shown in FIG.

In the safety valve 30 described above, the shape of the permanent magnet 5 constituting the valve body mechanism portion 8 is ring-shaped so that it can be extrapolated to the small diameter portion 4a (FIG. 3) at the upper portion of the rod 4. Since it has a shape, it is possible to increase the volume and give a large magnetic force. Therefore, in the assembly process, it becomes easy to integrally form the rod 4, the permanent magnet 5, the valve body 7, the spring receiver 13 and the like, and the attraction force to the ball 1 is increased so that another coupling mechanism or the like can be formed. It is possible to assemble the biasing means 12 in a compressed and sandwiched state between the spring bearing 13 and the lower surface side step portion of the ball seat 3 without using it, thereby improving the productivity.

[Embodiment 2] FIGS. 6 to 8 are views showing a main part of a gas combustion instrument with a safety valve according to another embodiment of the present invention.

The gas combustion device with a safety valve of this embodiment is
Similar to the first embodiment, the table cooker is configured by attaching the safety valve 40 to the gas combustion appliance main body 11 that does not have an electric control means for starting and stopping combustion and adjusting the combustion state.

The safety valve 40 used in the gas combustion apparatus with a safety valve of this embodiment has a ball 1 made of a magnetic material such as iron or stainless steel, and a ball 1 having an upper surface formed in a gentle convex shape so as to be freely movable. And a ball seat 3 made of a non-magnetic material such as a resin having a through hole 3b formed in a substantially central portion thereof and reciprocally movable (sliding) in the through hole 3b of the ball seat 3 in the direction of its central axis. Arranged valve body mechanism 8
When the ball 1 is stationary, the permanent magnet 5 is attracted to the ball 1 so that the gas passage 10 is in the open state. Allowing, but when a force such that the ball 1 floats on the ball seat 3 is exerted, the permanent magnet 5 is separated from the ball 1, the valve body 7 is pressed against the valve seat 6, and the gas passage 10 is closed. 12, the state display means 21 for displaying the operating state of the safety valve 40, and the permanent magnet 5 is separated from the ball 1 (that is, the attraction state between the permanent magnet 5 and the ball 1 is released), and the valve body 7 is a valve. From the closed state in which the seat 6 is pressed, the valve body 7 is separated from the valve seat 6 and the permanent magnet 5
And a reset mechanism 14 for returning the ball 1 to the open state by suctioning the ball 1. The structure of the other parts of the safety valve 40 of the second embodiment (for example, the valve body mechanism portion 8 and the like) is the same as that of the safety valve 30 (the third embodiment and the like) used in the first embodiment, and is similar to FIG. The parts given the same reference numerals indicate the same or corresponding parts.

In the safety valve 40 of the second embodiment, the reset mechanism 14 pushes up the valve body mechanism portion 8 arranged so as to project below the valve body 15 to attract the permanent magnet 5 to the ball. It is provided with a reset rod 19 for causing it, a reset spring 18 for urging the reset rod 19 downward and holding it at a predetermined position, and the like.

The state display means 21 of the safety valve 40 according to the second embodiment has a display portion main body 22 having a half-cylindrical shape and a through hole 26 provided at a predetermined position, and a lower surface side facing the ball 1. A rotating body (state display portion) 25 made of a non-magnetic body having a magnetic piece (iron plate in this embodiment) 24 attached at a predetermined position, and a state display mark (at a predetermined position on the rotating body 25). (Colored portion) 23, and when the ball 1 is magnetized through the permanent magnet 5 and the rod 4 in the open state, the ball 1 and the magnetic piece 24 are magnetized. When the rotor 25 is rotated to the left (in the direction of arrow A (FIG. 6, FIG. 8)) by the suction force and is in the closed state, the center of gravity of the rotor 25 causes the rotor 25 to move to the right (arrow B (FIG. 7)). Direction) to display the status visible from the through hole 26 Is configured to indicate whether in the closed state or the open state by chromatography click (colored portion) 23.

The operation of resetting the safety valve of the second embodiment will be described below. As shown in FIG.
The permanent magnet 5 is separated from the ball 1, and the valve body 7 is moved to the valve seat 6
The gas passage 10 is closed by being pressed by (closed state)
8, when the reset rod 19 is pushed in, the reset rod 19 rises, and the stepped portion 19a thereof abuts the lower portion of the rod 4 constituting the valve body mechanism portion 8 to cause the valve body mechanism to move. The part 8 is pushed upward. As a result, the valve body 7 is separated from the valve seat 6 and the gas passage 10 is opened, and the permanent magnet 5 at the upper portion of the valve body mechanism portion 8 is attracted to the ball 1, and then the reset rod 19 is reset. The restoring force (elastic force) of the spring 18 pushes it back downward (FIG. 6), and the safety valve returns to a usable state. Then, the above-mentioned operating state is the above-mentioned state display means 21.
Are displayed so that they can be visually confirmed.

In the above embodiment, the table stove has been described as an example, but the type of gas combustion appliance is not limited to this, and the present invention can be applied to other gas combustion appliances such as gas stoves. Is possible.

The present invention is not limited to the above-mentioned embodiment in other points as well, and the constituent material of the ball, the specific shape of the ball seat, the valve body mechanism part, the rod constituting the valve mechanism part, and the permanent magnet. , The specific shape and material of the valve,
Various applications and modifications can be made within the scope of the invention regarding the structure and arrangement position of the valve seat, the structure and mounting structure of the biasing means, the specific structure of the reset mechanism and the status display means, etc. Is.

[0042]

As described above, the gas combustion instrument with a safety valve according to the first aspect of the present invention has a state display means for displaying an operation state on the outside of the gas combustion instrument body for burning the fuel gas, and an operation state. Since it is configured by attaching a safety valve having a reset mechanism for returning to the usable state from the above, it is possible to surely stop the combustion of the gas combustion appliance body when an earthquake occurs. Further, the operating state of the safety valve can be visually confirmed from the outside by the state displaying means, and the operating state can be easily returned to the usable state by the resetting means. Therefore, it is possible to provide a gas combustion instrument with a safety valve that is highly convenient and safe at the same time without requiring a large-scale control circuit or the like.

Further, in the gas combustion instrument with a safety valve according to the second aspect of the present invention, a ball made of a magnetic material, a ball seat, a valve body mechanism section, a valve seat, vibration or inclination is generated in the gas combustion instrument body, and the ball is A biasing means for separating the permanent magnet from the ball and pressing the valve body against the valve seat to close the gas passage when a force for floating on the ball seat acts, a status display means for displaying the operating status, and a reset mechanism. Since it is configured by attaching a safety valve provided with, for example, it becomes possible to surely stop combustion by interrupting the supply of fuel gas when an earthquake occurs without requiring a control circuit or the like.
Further, since the state display means for displaying the operating state in a form that can be visually confirmed is provided, it becomes possible to easily confirm the operating state, and the state in which the safety valve is operated can be confirmed by the gas combustion device. When it is confirmed that the safety valve is working and it is not mistaken for a failure, the reset mechanism can easily reset the safety valve to return the gas combustion appliance to a usable state. It will be possible.

Further, as a safety valve, the ball is isolated from the gas passage by the ball seat, and the ball is movably held on the substantially convex ball holding surface of the ball seat, and the position of the ball is visually confirmed. In the case of a gas combustion instrument using a safety valve that is housed in a ball case made of a material that can be used, it is possible to easily confirm the operating state by visually observing the position of the ball. Can be more effective.

In a safety valve in which a ball is isolated from a gas passage by a ball seat, a transparent material such as resin or glass, which is generally inferior in heat resistance and mechanical strength to metal, is used as a constituent material of a ball case. Even if there is a problem, there is no fear of gas leakage and sufficient reliability can be secured. Further, in this safety valve, as the constituent material of the ball case, in addition to a transparent material such as resin or glass, it is possible to use a punching plate or a mesh material having a hole through which the inside can be visually observed.

Further, as the safety valve, the difference in the degree to which the ball is magnetized depending on the positional relationship between the ball and the permanent magnet or the presence or absence of magnetism is used to change the position or posture of the status display section depending on the magnetized state of the ball. By using a safety valve that displays the operating state, it becomes possible to easily confirm the operating state.
The present invention can be made more effective. In this case, the safety can be ensured without separating the ball from the gas passage by the ball seat.

When the present invention is applied to a gas combustion appliance which is not equipped with an electric control means for starting, stopping combustion and adjusting the combustion state, the structure is complicated and the cost is significantly increased. It is possible to obtain a gas combustion device with a safety valve that is efficient and highly reliable without increasing the number, which is particularly significant.

[Brief description of drawings]

FIG. 1 is a plan view showing a gas combustion appliance with a safety valve according to an embodiment of the present invention.

FIG. 2 is an enlarged view showing a main part of a gas combustion appliance with a safety valve according to an embodiment of the present invention.

FIG. 3 is a sectional view showing a structure of a safety valve of a gas combustion appliance with a safety valve according to an embodiment of the present invention.

FIG. 4 is a diagram showing the operation of the safety valve of the gas combustion appliance with a safety valve according to the embodiment of the present invention.

FIG. 5 is a diagram showing an operation when resetting the safety valve of the gas combustion appliance with a safety valve according to an embodiment of the present invention.

FIG. 6 is a cross-sectional view showing the structure of a safety valve of a gas combustion appliance with a safety valve according to another embodiment of the present invention.

FIG. 7 is a diagram showing an operation of a safety valve of a gas combustion appliance with a safety valve according to another embodiment of the present invention.

FIG. 8 is a diagram showing an operation when resetting a safety valve of a gas combustion instrument with a safety valve according to another embodiment of the present invention.

[Explanation of symbols]

 1 ball 2 valve guide 3 ball seat 3a ball seat support member 3b ball seat through hole 4 rod 4a rod small diameter part 5 permanent magnet 5a permanent magnet through hole 6 valve seat 7 valve body 8 valve body mechanism 9 ball case 10 Gas passage 10a Gas intake 11 Gas combustion instrument main body 12 Energizing means 13 Spring receiver 14 Reset mechanism 15 Valve main body 16 Rotation shaft 17 Reset lever 18 Reset spring 19 Reset rod 19a Reset rod step 20 Seesaw plate 21 State Display means 22 Display unit main body 23 Colored portion 24 Magnetic material piece (iron plate) 25 Rotating body (status display portion) 26 Through hole 30, 40 Safety valve

Claims (5)

[Claims] 1. A gas combustion instrument body for burning a fuel gas, and (b) a gas combustion instrument that is attached to the outside of the gas combustion instrument body and senses vibrations or tilts when they occur. A safety valve for stopping the supply of fuel gas to the main body, comprising a state display means for displaying an operating state and a safety valve having a reset mechanism for returning the operating state to the usable state. A gas burning appliance with a safety valve. 2. (a) a gas combustion instrument body for burning fuel gas; (b) a ball made of a magnetic material attached to the gas combustion instrument body; and a ball seat for movably holding the ball. Provided with a permanent magnet that is reciprocally movable in a substantially vertical direction below the ball seat, that is directly or indirectly attracted to the ball at the upper portion, and has a valve body that makes contact with or separates from the valve seat below at the lower portion. And a valve seat that is provided in a part of the gas passage through which the fuel gas passes and that opens and closes the gas passage when the valve body separates from and contacts the ball seat without vibration or tilt. When stationary, the attraction force of the permanent magnet is larger than the urging force, allowing the permanent magnet to be attracted by the ball and the gas passage to be in an open state. The ball comes out When the force acts such that the idler to above, overcomes the attraction force of the permanent magnet,
Urging means for separating the permanent magnet from the ball and pressing the valve body against the valve seat to close the gas passage, and status display means for displaying the operating status in a manner that can be visually confirmed. From the closed state in which the permanent magnet is separated from the ball and the valve body is pressed against the valve seat, the valve body is separated from the valve seat and the permanent magnet is attracted to the ball to open the state. A gas combustion instrument with a safety valve, comprising: a safety valve having a reset mechanism for returning. 3. The safety valve isolates the ball from the gas passage by a ball seat, movably holds the ball on a substantially convex ball holding surface of the ball seat, and visually checks the position of the ball. It is housed in a ball case made of a material that can be confirmed, and the operating state of the ball can be confirmed by visually observing the position of the ball. The gas combustion device with a safety valve according to claim 2. 4. The safety valve utilizes the difference in the degree to which the ball is magnetized depending on the positional relationship between the ball and the permanent magnet or the presence or absence of magnetism, and changes the position or posture of the status display unit according to the magnetized state of the ball, The gas combustion instrument with a safety valve according to claim 2, wherein the operation state is displayed. 5. The gas combustion instrument body is configured to start combustion,
3. An electric control means for stopping and adjusting the combustion state is not provided.
A gas combustion instrument with a safety valve according to 2, 3, or 4.