JPH0344973Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to a liquid fuel combustion device such as a wick-type kerosene stove, and particularly relates to a combustion tube that covers the wick.

(Prior Art) Conventionally, liquid fuel combustion devices, such as wick-type kerosene stoves, have a structure in which the amount of combustion can be adjusted by finely adjusting the amount of protrusion of the wick covered by the combustion tube from the fire pan. ing.

(Problem to be solved by the invention) However, in the conventional structure described above, the variable range of the protrusion amount of the lamp wick is limited to a range in which exhaust gases such as carbon monoxide and carbon dioxide and odor are not worsened. Since the amount of fire can only be reduced to about 90 to 80% of the maximum combustion amount, it is necessary to extinguish the fire when the room temperature rises too much, and the room temperature fluctuates widely, making it inconvenient to use.

The present invention was developed in consideration of the above circumstances, and it is possible to significantly adjust the amount of combustion without causing deterioration of exhaust gas, and has good combustibility that allows stable combustion conditions to be obtained at all times. The object is to provide a liquid fuel combustion device.

[Structure of the idea]

(Means for Solving the Problem) The present invention consists of a flame tube that covers the wick and an outer tube that covers the flame tube, which are placed on a fire pan from which the upper part of the wick whose lower part is immersed in liquid fuel is projected. In a liquid fuel combustion device provided with a combustion tube, the flame tube and the outer tube constituting the combustion tube are divided into upper and lower parts, and the upper flame tube is connected and separated from the lower flame tube. The upper flame tube is made vertically movable, and the diameter of the upper outer tube that covers the upper flame tube is made larger than the diameter of the lower outer tube that covers the lower flame tube. In addition to the communication port that communicates with the lower flame tube and the lower outer tube, an air intake port that communicates with the outside is provided at the bottom of the outer cylinder, and is further linked to the vertical movement of the upper flame tube. An adjustment body is provided to make the opening area of the air intake port smaller when the upper flame cylinder is lowered than when it is raised.

(Function) In the liquid fuel combustion device of the present invention, the effective volume of the combustion space is switched and the amount of combustion is adjusted by combining or separating the lower flame tube that covers the wick and the upper flame tube. That is, when the lower and upper flame tubes are combined, the combustion amount increases, and when they are separated, the combustion amount decreases. And during strong combustion,
In addition to the heated combustion air that is supplied to the upper flame tube from between the lower flame tube and the lower outer tube through the communication port, it also flows in from the air intake provided at the bottom of the upper outer tube. The outside air is supplied to the upper flame tube,
A lack of combustion air is prevented. At this time, the adjustment body that is linked to the vertical movement of the upper combustion tube reduces the opening area of the air intake, thereby minimizing the cooling effect of the upper combustion tube due to the outside air flowing in from this air intake. This results in a good combustion condition with red heat. On the other hand, during weak combustion, the opening area of the air intake port increases, so a large amount of outside air flows in from the air intake port. Therefore, especially when switching to weak combustion, the upper combustion cylinder is quickly cooled, the draft effect is quickly reduced, and the vaporization effect of the liquid fuel is also adapted to weak combustion, making it possible to switch to weak combustion. Stabilization occurs quickly.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

Reference numeral 1 denotes a main body of the apparatus, in which a fixed tank 3 is fixed on a base 2 via a support frame 4, and a case body 5 is attached to cover the fixed tank 3. Also, located within the case body 5 and on the right side of the upper surface of the fixed tank 3 when viewed from the front, there is a fuel tank that supplies liquid fuel such as kerosene to the fixed tank 3 while maintaining a constant level at all times. (not shown) is detachably attached.

Further, a combustion section 11 is provided on the upper left side of the fixed tank 3. Next, this combustion section 11
The configuration of is explained.

An opening 12 is provided on the upper left side of the fixed tank 3.
is formed, and a burner basket 14 having a substantially cylindrical shape with a reduced diameter at the upper part is fixed to surround this opening 12 via a step 13.
A flange-shaped fire pan 15 is formed at the upper end of the burner basket 14. Further, a cylindrical core guide 16 is integrally provided on the inner bottom surface of the fixed tank 3, and the upper part of the core guide 16 faces the upper part of the burner basket 14 from the inside with a small gap therebetween. At the same time, a regulating plate 18 having a fire pan 17 corresponding to the fire pan 15 of the burner basket 14 on its upper end surface and having a partially open opening is provided. Furthermore, the core guide 1
A plurality of partially open guide plates 19 are fixed horizontally within the guide plate 6, and a drive shaft 20 is supported so as to be vertically movable through the guide plates 19 so as to be able to slide freely through the center of the guide plates 19. There is.

A cylindrical lamp wick 21 made of non-combustible fiber is supported between the burner basket 14 and the wick guide 16 so as to be vertically movable.
The upper part of the fuel tank 1 can be freely retracted from the fire pans 15 and 17, and the lower part is constantly immersed in the liquid fuel in the fixed tank 3.

Further, above the fire pans 15 and 17, lower combustion tubes 22 are arranged vertically to cover the lamp wick 21.
and an upper combustion tube 23 are provided. Next, the configuration of these combustion tubes 22 and 23 will be explained starting from the lower combustion tube 22.

A lower inner flame tube 25, which is a cylindrical lower flame tube having a large number of air holes 24, is placed on the fire pan 17 of the wick guide 16. A plurality of lower guide disks 26 having a partially opened interior are fixed horizontally to the lower inner flame cylinder 25, and a lower rectifying plate stand 27 is fixed to the upper end surface. An air passage port 29 is formed in the center of the lower rectifier plate 27.

On the other hand, the fire pan 15 of the burner basket 14
A lower outer flame tube 31, which is a cylindrical lower flame tube having a large number of air holes 30, is placed on the upper side and is located concentrically on the outer circumferential side of the lower inner flame tube 25. A lower glass retainer 32 is fixed to the upper end of the lower outer flame tube 31 in the form of a flange. Also,
A lower metal outer cylinder 33, which is a substantially cylindrical lower outer cylinder, is attached to the lower part of the lower outer flame cylinder 31, and is located concentrically on the outer circumferential side thereof. The lower metal outer cylinder 33, the lower outer flame cylinder 31, and the lower inner flame cylinder 25 are fixed to each other by cross pins (not shown). Further, a lower glass outer cylinder 34 which is a cylindrical lower outer cylinder is placed on the upper part of the lower metal outer cylinder 33, and the upper end of this lower glass outer cylinder 34 is connected to the lower glass outer cylinder 34. It is prevented from coming off by a retainer 32.

A gap is formed between the lower end of the lower metal outer cylinder 33 and the lower outer flame cylinder 31, and this gap serves as a lower air intake port 35 that opens downward. In addition, a plurality of communication ports 36 are formed in the lower glass retainer 32 facing the space between the lower outer flame tube 31 and the lower glass outer tube 34, and A plurality of upper air intake ports 37 are formed at positions on the outer peripheral side of the cylinder 34 .

The upper combustion tube 23 is connected to the lower inner flame tube 25.
an upper inner flame tube 42 which is a cylindrical upper flame tube having the same diameter as that of the lower outer flame tube 31 and having many air holes 41; and a cylindrical upper flame tube having the same diameter as the lower outer flame tube 31 and having many air holes 43 It is provided with an upper outer flame cylinder 44 which is a cylinder. In the upper inner flame tube 42, an upper guide disk 45 with a partially open side is fixed to the lower end surface, and an upper rectifying plate base 46 with a partially open side
is fixed to the upper end surface, and this upper rectifying plate base 4
A substantially disk-shaped upper rectifying plate 47 is fixed on the top of the rectifying plate 6 . On the other hand, a first reinforcing ring 48 is fixed to the lower end of the upper outer flame cylinder 44, and a second reinforcing ring 49 is fixed to the upper end. Outer flame cylinder 44
maintains its roundness. Further, a pair of interlocking plates 50 protruding toward the center are fixed to the first reinforcing ring 48, and these interlocking plates 50
The tip end of the upper inner flame tube 42 is passed through a long hole 51 formed at the lower end of the upper inner flame tube 42.
and the upper outer flame tube 44 are concentrically connected.

Further, the upper end portion of a movable rod 52 is fixed to the center of the upper rectifying plate 47 and the upper rectifying plate stand 46, and the movable rod 52 is attached to the upper guide disk 45.
It is penetrated through the center of the lower guide disk 26, and also penetrated through the center of the lower guide disk 26 so as to be vertically slidable. Furthermore, the lower end of the movable rod 52 is in contact with the upper end of the drive shaft 20. The upper inner flame tube 42 and the upper outer flame tube 44 are coaxially and movably supported above the lower inner flame tube 25 and the lower outer flame tube 31 by the movable rod 52. There is.

Further, in the center of the movable rod 52, a lower current plate 53 is located between the upper lower guide disk 26 and the lower current plate stand 27, and has a slightly smaller diameter than the air passage opening 29. is fixed, and this lower rectifying plate 5
3 opens the air passage port 29 when the movable rod 52 descends, and substantially closes it when the movable rod 52 ascends.

Further, on the lower glass retainer 32, there is an upper glass outer cylinder located on the outer circumferential side of the upper air intake port 37, which is a cylindrical upper outer cylinder having a larger diameter than the lower glass outer cylinder 34. A cylinder 54 is placed thereon. The upper glass outer tube 54 is located concentrically on the outer periphery of the upper inner flame tube 42 and the upper outer flame tube 44, and the movable range of the upper inner flame tube 42 and the upper outer flame tube 44 is is covered. Further, three support rods 32a are provided on the upper end surface of the upper glass outer cylinder 54 and are erected on the lower glass retainer 32.
An upper glass retainer 55 is fixed to the upper glass retainer 55.
An exhaust port 56 having a larger diameter than the upper rectifier plate 47 is formed. Then, the upper rectifying plate 47
The movable rod 52 opens the exhaust port 56 when the movable rod 52 descends, and is positioned within the exhaust port 56 when the movable rod 52 ascends.

Further, a flange-shaped adjustment plate 57 as an adjustment body is fixed to the lower end of the upper outer flame cylinder 44 so as to protrude toward the outer periphery thereof. At times, it is joined to the lower glass retainer 32 to partially close its upper air intake port 37, and when it is raised, the upper air intake port 37 is opened. That is, the outer diameter of the adjustment plate 57 is set so as to close off a predetermined area of the upper air intake port 37 on its inner peripheral side. The adjustment plate 57 is also provided with a suitable position on the inner circumferential side of the lower glass retainer 32 facing the communication port 36 so that air passing through the communication port 36 can pass through the adjustment plate 57 without being subjected to resistance. A plurality of through holes 58 are formed in the opening.

Furthermore, the drive shaft 20 is linked to a first operating knob 61 provided on the front surface of the case body 5 via a flame tube lifting mechanism (not shown) provided in the device main body 1. , by operating this first operation knob 61, the upper inner flame cylinder 4
2 and the upper outer flame tube 44 can be moved up and down. Further, the wick holder 62 fixed to the outer peripheral surface of the lamp wick 21 is attached to a second lamp holder provided on the front surface of the case body 5 via a wick up/down mechanism (not shown) provided in the device main body 1. It is linked to an operating knob 63, and by operating this second operating knob 63, the lamp wick 21 can be moved up and down.

Next, the operation of the above configuration will be explained.

For strong combustion, as shown in FIG. 1, the movable rod 52 is lowered, and the upper inner flame tube 42 and upper outer flame tube 44 that are interlocked with the movable rod 52 are lowered. Then, the first reinforcing ring 48 is hermetically joined to the lower glass retainer 32, and the upper guide disk 45 is hermetically joined to the lower baffle plate base 27, thereby forming the upper inner flame tube 42 and the upper outer flame tube. 44 is joined to the lower inner flame tube 25 and the lower outer flame tube 31,
The effective volume of the combustion space increases, and the amount of combustion increases. Further, the adjustment plate 57 is lowered together with the upper outer flame cylinder 44 and joined to the lower glass retainer 32, and closes the inner peripheral side of the upper air intake port 37.

At this time, on the lower outer flame tube 31 side, the outside air that has flowed in from the outside through the lower air intake port 35 is used as combustion air to pass through the lower outer flame tube 31 through the air hole 30 of the lower outer flame tube 31. It is supplied to the combustion space between the cylinder 31 and the lower inner flame cylinder 25. By the way, since there is a lower glass retainer 32 between the lower outer flame tube 31 and the upper outer flame tube 44, the draft effect is reduced, but the outside air flowing in from the outside through the upper air intake port 37 The air is supplied from the air hole 43 of the upper outer flame tube 44 to the combustion space between the upper outer flame tube 44 and the upper inner flame tube 42, thereby preventing a shortage of combustion air on the upper outer flame tube 44 side. Also, the communication port 3 is connected from between the lower outer flame tube 31 and the lower glass outer tube 34.
Since the combustion air supplied to the upper outer flame tube 44 side through the upper combustion tube 6 and the through hole 58 is already sufficiently heated by the combustion heat from the lower combustion tube 22 side, the combustion air flows in from the upper air intake port 37. This reduces the cooling effect of the upper combustion tube 23 by outside air. Moreover, since the opening area of the upper air intake port 37 is narrowed down to the minimum size sufficient to compensate for the lack of combustion air, the above-mentioned cooling effect can be suppressed as much as possible. Therefore, a stable combustion state with good red heat can be obtained.

On the other hand, on the inner flame cylinder 25, 42 side, from the lower end opening of the core guide 16, the opening 19 of the guide plate 19
Outside air flows into the lower inner flame tube 25 through the opening 18a of the regulating plate 18 and the opening 26a of the lower guide disk 26 and the air hole of the lower inner flame tube 25 as combustion air. 24 between the lower inner flame tube 25 and the lower outer flame tube 31. Furthermore, during strong combustion, since the air passage port 29 of the lower baffle plate stand 27 is open, combustion air also flows into the upper inner flame cylinder 42 through the air passage port 29, and the air It is supplied between the upper inner flame tube 42 and the upper outer flame tube 44 via the hole 41 .

In addition, when performing weak combustion, as shown in FIG. To separate. In this state, the effective volume of the combustion space becomes smaller, so the combustion amount also becomes smaller. Further, the adjustment plate 57 also rises and separates from the lower glass retainer 32, and its upper air intake port 37 is fully opened. A part of the large amount of outside air flowing in from the fully opened upper air intake port 37 is supplied to the vaporized gas discharged from the lower inner flame tube 25 and the lower outer flame tube 31, that is, the vaporized gas in which the liquid fuel is vaporized. The air becomes air for secondary combustion, and combustion is completed only in the lower combustion tube 22.

Especially when switching from strong combustion to weak combustion,
In addition to the reduction in combustion space, a large amount of outside air flows into the upper combustion tube 2 from the upper air intake port 37.
3 is quickly cooled, the draft effect is reduced in a short time, and the amount of vaporized liquid fuel is also quickly reduced, making it suitable for weak combustion.
Therefore, the red flame phenomenon that occurs excessively on the lower combustion cylinder 22 side at the time of the switching is suppressed in a short time, and the combustion quickly shifts to stable weak combustion.

In addition, during weak combustion, the air passage port 29 between the lower inner flame tube 25 and the upper inner flame tube 42 is connected to the lower straightening plate 5.
3, the draft to the upper inner flame tube 42 is cut off, and the lower inner flame tube 25
Almost all of the outside air that has flowed into the combustion chamber is consumed on the lower combustion cylinder 22 side, resulting in more stable weak combustion.

Further, when switching from weak combustion to strong combustion, the combustion space increases and the cooling effect decreases as described above, so that the draft effect rapidly becomes active and the amount of vaporization increases.

According to the above configuration, the inner flame cylinder 2 is divided into upper and lower parts.
5, 42 and the outer flame tubes 31, 44 are combined and separated to adjust the combustion amount, it is possible to greatly adjust the combustion amount. For example, the combustion amount during weak combustion can be made 60 to 50% of the combustion amount during strong combustion.

Also, in this way, the fire pans 15 and 17 of the wick 21
Since the amount of combustion can be reduced without reducing the amount of protrusion from the lamp, it is possible to prevent deterioration of the exhaust gas and generation of odor due to cooling of the combustion exhaust gas caused by lowering the wick 21 too much as in the conventional case.

In this way, the image of the conventional kerosene stove can be completely changed.

In addition, by making the diameter of the upper glass outer cylinder 54 larger than the diameter of the lower glass outer cylinder 34, in addition to the lower air intake port 35 of the lower combustion cylinder 22, the upper combustion cylinder 23 is also Air intake port 37
can be easily provided. By providing the upper air intake port 37 whose opening area changes depending on the adjustment plate 57 between strong combustion and weak combustion, combustion balance can be easily achieved as described above.

Furthermore, the lower combustion tube 22 and the upper combustion tube 23
When changing the variable width of the combustion amount by changing the height ratio between the upper air intake port 37 and the upper The amount of combustion air supplied to the combustion tube 23 can be adjusted. Therefore, it is possible to respond to and adjust the change in the variable range of the combustion amount as described above in a short time, and the manufacturer's cost can be reduced.

In addition, the lower metal outer cylinder 33, the lower glass outer cylinder 34, and the upper glass outer cylinder 54 that cover the lower inner flame cylinder 25, the lower outer flame cylinder 31, the upper inner flame cylinder 42, and the upper outer flame cylinder 44, Upper inner flame tube 42 and upper outer flame tube 4
Regardless of the vertical movement of 4, it is fixed in one piece, so it gives a sense of security visually, and
Stable combustion can be obtained.

In the above embodiment, the adjustment plate 57 is connected to the lower glass holder 32 during strong combustion, but it is also possible to create a suitable gap between the adjustment plate 57 and the lower glass holder 32 even during strong combustion. Good too. According to this configuration, during strong combustion, the low-temperature air that flows in from the upper air intake port 37 and the high-temperature air that flows in from the communication port 36 are reliably mixed and have an appropriate temperature, so that the upper outer flame tube 44 between the upper outer flame tube 44 and the upper inner flame tube 42, it is possible to more reliably prevent deterioration of exhaust gas and generation of odor due to cooling of combustion gas.

[Effect of idea]

According to the present invention, since the combustion amount is adjusted by combining and separating the upper and lower flame tubes, the combustion amount can be greatly adjusted without causing deterioration of exhaust gas, etc. The diameter of the tube is made larger than the diameter of the lower outer tube, and the bottom of the upper outer tube has a communication port that communicates between the lower flame tube and the lower outer tube, and an air intake that communicates with the outside. In addition to providing an opening, an adjustment body that is linked to the vertical movement of the upper flame tube is provided to reduce the opening area of the air intake port and reduce the flame tube during intense combustion when the upper and lower flame tubes are combined. Since the opening area is enlarged during separate weak combustion, it is possible to suppress the cooling effect as much as possible and prevent a lack of combustion air in the upper flame tube during strong combustion.On the other hand, when switching to weak combustion, the upper flame By cooling the combustion cylinder quickly, the combustion is quickly stabilized to weak combustion, and a stable combustion state is always obtained.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing one embodiment of the liquid fuel combustion device of the present invention during strong combustion, Fig. 2 is a sectional view during weak combustion, Fig. 3 is a top view of the upper part of the combustion cylinder, and Fig. 4 The figure is a partially cutaway plan view of the joint between the lower combustion tube and the upper combustion tube, and FIG. 5 is a perspective view of the entire structure. 15, 17...Fire pan part, 21...Light wick, 22...
...Lower combustion tube, 23...Upper combustion tube, 25...
...Lower inner flame tube which is the lower flame tube, 31...Lower outer flame tube which is the lower flame tube, 33...Lower metal outer tube which is the lower outer tube, 34...Bottom Lower glass outer cylinder which is the side outer cylinder, 36...Communication port, 37...Air intake port, 42...Upper inner flame cylinder which is the upper flame cylinder, 4
4... Upper outer flame tube which is an upper flame tube, 54... Upper glass outer tube which is an upper outer tube, 57... Adjustment plate as an adjustment body.

Claims (1)

[Scope of Claim for Utility Model Registration] A lamp wick whose lower part is immersed in liquid fuel and whose upper part protrudes above the fire pan, a flame tube that covers the wick, and an outer tube that covers the flame tube, and is installed on the fire pan. In a liquid fuel combustion device, the combustion tube consisting of the flame tube and the outer tube is divided into upper and lower parts, and the upper flame tube is vertically movable and connected to the lower flame tube. It is separable, and the diameter of the upper outer cylinder that covers the upper flame cylinder is larger than the diameter of the lower outer cylinder that covers the lower flame cylinder,
A communication port communicating with the lower flame tube and the lower outer tube is provided at the bottom of the upper outer cylinder, and an air intake port communicating with the outside is provided, which is linked to the vertical movement of the upper flame tube. A liquid fuel combustion apparatus characterized in that an adjustment body is provided that makes the opening area of the air intake port smaller when the flame tube above the lever is lowered than when it is raised.