JP2000205565A - Supporting structure for igniter in portable gas cooking stove - Google Patents

Abstract

PROBLEM TO BE SOLVED: To direct spark generated from an igniter surely toward mixture gas in a portable gas cooking stove by preventing the upper end of the igniter disposed oppositely from a mixing pipe from deflecting. SOLUTION: An igniter 28 is supported at two points by engaging a protrusion formed on an igniter cover 29 with a mixing pipe 25 at the lower end and engaging an igniter supporting member 30 with the mixing pipe 25 at the upper end. Since upper end of the igniter 28 is not deflected, the igniter 28 can be supported stably with respect to the mixing pipe 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable gas stove for outdoor use, and more particularly, to an igniter supporting structure for supporting an igniter which is one of components of the portable gas stove.

[0002]

2. Description of the Related Art FIG. 7 shows an example of a portable gas stove.

[0003] Generally, a portable gas stove 10 includes a gas cartridge 11 in which combustible gas is compressed and packed,
A gas combustor 12 is detachably attached to the gas cartridge 11. The gas cartridge 11 and the gas combustor 12 are mounted under a sealed state via a gasket 13.

The gas combustor 12 includes a gas cartridge 11
And an instrument plug 14 through which combustible gas supplied from the gas cartridge 11 passes, and a flammable gas passing through the inside of the instrument plug 14 by adjusting the opening degree of a gas passage formed in the instrument plug 14. A gas flow rate adjusting spindle 15 for adjusting a gas flow rate, a burner head 16 having a plurality of openings 16a formed on its surface, a mixing pipe 17 connecting the instrument plug 14 and the burner head 16, and a mixing pipe 1
7 and a plurality of slots 18 extending above the burner head 16, and an opening 16 a of the burner head 16 disposed close to the outer surface of the burner head 16.
And an electric igniter 19 for igniting the mixed gas discharged from the igniter.

The combustible gas is loaded into the gas cartridge 11 in a pressurized state. Therefore, when the gas flow opening inside the instrument plug 14 is opened by the gas flow rate adjusting spindle 15, the combustible gas in a pressurized state enters the mixing pipe 17 from the gas cartridge 11 through the instrument plug 14. Thus, the combustible gas enters the mixing pipe 17 with the gas flow rate adjusted by the gas flow rate adjusting spindle 15.

The mixing tube 17 has a plurality of openings 17a (FIG. 7).
Only one is shown), and external air is sucked into the mixing pipe 17 from the opening 17 a by the negative pressure generated when the combustible gas passes through the inside of the mixing pipe 17. . The combustible gas is mixed with the air taken in from the opening 17a, and becomes a mixed gas of the combustible gas and the air.

After the mixed gas enters the burner head 16, it is ejected from an opening 16 a and ignited by an electric igniter 19 arranged close to the burner head 16.

[0008] The mixed gas that is ignited and is in a combustion state becomes a flame, and heats an object to be heated (pan, kettle, food, etc.) placed on the gotoku 18.

[0009]

In general, outdoor products are not limited to portable gas stoves, but are desired to be small in size. In the case of a portable gas stove, the gas cartridge 11 must be filled with a certain amount of gas in order to ensure a gas burning time that is not practically inconvenient, and there is a limit to miniaturization. For this reason, the miniaturization of the portable gas stove has been promoted exclusively by reducing the size of the gas combustor 12, especially the burner head 16.

However, when the size of the burner head 16 is reduced, the volume of the burner head 16 with respect to the gas flow rate from the gas cartridge 11 becomes relatively small.
The gas velocity of the mixed gas ejected from the nozzle increases.

When the gas velocity of the mixed gas is increased as described above, it is necessary that the spark emitted from the igniter 19 be surely directed to the mixed gas. However, in the conventional gas stove shown in FIG. 7, since the igniter 19 is supported by the support base 19a only at the lower end thereof, the upper end of the igniter 19 lacks stability. That is, the igniter 19 tends to swing right and left or back and forth at the upper end, and therefore, the contact area between the spark emitted from the igniter 19 and the flow of the mixed gas is reduced, which is a factor that prevents the mixed gas from being reliably ignited. I was

The present invention has been made in view of such a problem in the conventional igniter support structure of a portable gas stove. The igniter is surely supported at a fixed position with respect to the mixing pipe, and the igniter is supported by the igniter. It is an object of the present invention to provide an igniter support structure for a portable gas stove that can surely direct generated sparks to a mixed gas.

[0013]

In order to achieve this object, a first aspect of the present invention is directed to a mixing pipe having an open end from which a mixed gas of combustible gas and air is discharged, and a discharge pipe from the mixing pipe. In a igniter supporting structure for supporting an igniter in a portable gas stove including at least a burner head having an opening on the surface from which the mixed gas is ejected, and an igniter for igniting the mixed gas discharged from the burner head, the igniter has a lower end. Provided is an igniter support structure for a portable gas stove, wherein the igniter support structure is supported by a mixing tube in both the vicinity and the vicinity of an upper end.

In the conventional portable gas stove shown in FIG. 7, the igniter 19 is supported on the support base 19a only at the lower end thereof, so that the upper end of the igniter 19 easily swings, and the spark emitted from the igniter 19 burns the burner head. The mixed gas discharged from the 16 openings 16a was not always reliably directed. On the other hand, according to the igniter support structure according to the present invention,
The igniter is supported at each of its upper and lower ends against the mixing tube. Therefore, the upper end of the igniter does not swing, and the spark emitted from the igniter can be reliably directed to the flow of the mixed gas.

As described in claim 2, the igniter is housed inside the igniter cover,
The igniter cover has a protrusion projecting in one direction, and the protrusion has an opening substantially equal to the inner diameter of the mixing tube, and the igniter cover engages the protrusion with the mixing tube. Thereby, it is preferable that the fixing tube is fixed to the mixing tube.

As described above, since the igniter cover functions as a protective cover by supporting the igniter in a state housed in the igniter cover, damage to the igniter can be prevented. Furthermore, since the protrusion provided on the igniter cover can be provided at an arbitrary height of the igniter cover, the protrusion is disposed at the most suitable position in relation to other components, and this protrusion is provided. Thereby, the igniter can be supported.

For example, by disposing the protrusion near the lower end of the igniter, the igniter can be fixed near the lower end.

The term "engagement" refers to, for example, fitting the opening of the projection into the mixing tube, or sandwiching the projection between the mixing tube and a component immediately below (for example, a joint block described later). Means all means for securing the igniter cover to the mixing tube.

[0019] For example, the igniter cover is provided in claim 3
The igniter has a base block extending in one direction, a pillar extending in a direction perpendicular to the base block, an ignition section extending from a tip of the pillar, and a switch movable in the same direction as the base block. And a first cover portion that covers the base block and a second cover portion that covers the pillar.

When the igniter cover is configured as described above, an area of the first cover portion located above the switch is formed so as to be bent obliquely upward. Is preferred.

By forming the first cover portion of the igniter cover as described above, the switch can be easily pressed.

Preferably, the igniter is supported on the mixing tube via an igniter support member. In this case, for example, the igniter support member is a ring-shaped member that can be engaged with the mixing pipe, and a projecting member that projects outward from the ring-shaped member and has a shape that can be fitted to the second cover portion of the igniter cover. , And the projecting member may be formed with an opening into which the pillar can be fitted.

By using such an igniter support member, the igniter can be reliably supported on the mixing tube. In particular, since the igniter support member can support the igniter at any height of the igniter, the igniter support member is arranged at an optimum position in consideration of a positional relationship with other components other than the igniter. be able to. For example, this igniter support member can be used to support the igniter near the upper end thereof with respect to the mixing tube.

[0024]

1 and 2 show one embodiment of a gas stove provided with an igniter support structure according to the present invention. FIG. 1 is a front view of a gas stove according to the present embodiment, and FIG. 2 is a plan view when the gas stove according to the present embodiment is viewed from above.

As shown in FIGS. 1 and 2, the gas stove according to the present embodiment supplies a gas cartridge 20 (see FIG. 2) in which flammable gas is compressed and loaded, and supplies flammable gas from the gas cartridge 20. 2 and a gas stove body 21 for burning the combustible gas and an instrument plug 22 for adjusting the flow rate of the combustible gas supplied from the gas cartridge 20 (FIG. 2).
And a gas tube 23 for supplying combustible gas from the gas cartridge 20 to the gas stove main body 21 via the instrument plug 22.

The gas stove body 21 includes a gas tube 23
And a burner head 2 having a plurality of openings 25a formed on the surface.
5 and a dish-shaped windshield 25 surrounding the burner head 25
b, a mixing pipe 26 connecting the joint block 24 and the burner head 25, three virtues 27 attached to the mixing pipe 26 (see FIG. 2), and a burner head 2
And an igniter 28 that ignites a mixed gas of combustible gas and air ejected from the opening 25a.

Each end 27 is attached to the mixing tube 26 at one end thereof so as to be wound around the mixing tube 26, and is configured to be rotatable in a direction indicated by an arrow A in FIG. I have.

FIG. 3 shows the structure of the igniter 28. 3A is a top view when the igniter 28 is viewed from above, FIG. 3B is a front view when the igniter 28 is viewed from the front, and FIG. 3C is a view when the igniter 28 is viewed from the side. FIG.

The igniter 28 includes a base block 28a having a substantially quadrangular prism shape, and a base block 2a.
A cylindrical pillar 28b extending upward from 8a, an ignition portion 28c extending further upward from the upper end of the pillar 28b and emitting a spark, and a switch 28d for operating the igniter 28 by pressing against the base block 28a. Has become.

The igniter 28 is mounted inside an igniter cover 29 shown in FIG. FIG. 4A is a top view when the igniter cover 29 is viewed from above, and FIG. 4B is a front view of the igniter cover 29.

The igniter cover 29 includes a first cover portion 29a and a second cover portion 29b.

The first cover portion 29a is open at the bottom, and the igniter 28 is inserted into the first cover portion 29a.
Is stored.

As shown in FIG. 4A, a projection 29c is formed on the upper surface of the first cover portion 29a, and a circular hole 29d is formed in the projection 29c. The igniter cover 29 is fixed to the mixing tube 26 by fitting the hole 29d into the mixing tube 26.

The switch 28d of the igniter 28
An inclined portion 29e which is inclined obliquely outward and upward is formed on the upper surface of the end of the first cover portion 29a on the side where is stored, so that the switch 28d can be easily pressed.

The pillar 28b of the igniter 28 is housed inside the second cover portion 29b. The cross section of the second cover portion 29b has a rectangular shape with one surface open, and a hook portion 29f that is bent inward is formed above the second cover portion 29b.

In the second cover portion 29b, oval holes 29g for releasing heat of the igniter 28 are formed in the vertical direction.

The igniter cover 29 can be formed, for example, by separately manufacturing the first cover portion 29a and the second cover portion 29b, and thereafter, for example, by welding them.

FIG. 5 is a plan view of an igniter support member 30 for supporting the igniter 28 at its upper end.

The igniter support member 30 includes a ring-shaped member 30a and a rectangular projecting member 30b projecting outward from the ring-shaped member 30a.

The inner diameter of the ring-shaped member 30a is set to a size that can be fitted into the mixing tube 26 immediately below the burner head 25.

The size of the projecting member 30b is set to the same size as the rectangular cross section of the second cover portion 29b of the igniter cover 29. Therefore, the projecting member 30b can be fitted into the second cover portion 29b.

A circular opening 30 is provided at the center of the projecting member 30b.
c is formed. The diameter of the circular opening 30c is equal to the outer diameter of the pillar 28b of the igniter 28. Therefore,
The pillar 28b of the igniter 28 can be fitted into the circular opening 30c of the projecting member 30b. When storing the igniter 28 inside the igniter cover 29, first, the ring-shaped member 30a of the igniter support member 30 shown in FIG.
The rectangular projecting members 30b are fitted into the second cover portions 29b of the igniter cover 29 at the positions where the hook portions 29f are located. Next, the igniter 28 is inserted into the igniter cover 29 from below the igniter cover 29. Thus, the base block 28a of the igniter 28 is stored inside the first cover portion 29a, and the pillar 28b of the igniter 28 is stored inside the second cover portion 29b.

Further, as shown in FIG. 2, the pillar 28b of the igniter 28 is fitted into the circular opening 30c of the igniter support member 30 near its upper end.

As described above, the igniter 28
In the vicinity of the lower end, a hole 29 formed in the projection 29c of the second cover portion 29b of the igniter cover 29 is formed.
d fits into the mixing tube 26, and near the upper end thereof, the pillar 28b of the igniter 28 fits into the opening 30c formed in the protruding member 30b of the igniter support member 30, thereby forming two upper and lower portions. , And is fixed to the gas stove main body 21 and further to the mixing pipe 26.

FIG. 6 shows the structure of the generator 31. 6A is a top view when the generator 31 is viewed from above, FIG. 6B is a front view of the generator 31, and FIG. 6C is a side view of the generator 31.

The generator 31 consists of a hollow tube formed in a substantially inverted U-shape, and is connected at its free end to the joint block 24.

The combustible gas sent from the gas cartridge 20 through the instrument plug 22 and the gas tube 23 passes through the joint block 24, passes through the inside of the generator 31, and returns to the joint block 24 again. Thereafter, the mixture is sent from the joint block 24 to the mixing tube 26.

As shown in FIGS. 1 and 2, a notch 25c is formed in a part of the windshield 25b. Inside the notch 25c, the generator 31 is arranged close to the burner head 25. I have. Generator 3
1 is arranged so that the upper end thereof is substantially the same as the upper end of the burner head 25 or slightly higher than the upper end of the burner head 25.

Further, an igniter 28 is disposed slightly outside the generator 31 when viewed from the burner head 25. The igniter 28 includes a generator 31
Are arranged so as to be entirely contained in the generator 31 when viewed from the front of the.

As shown in FIG. 1, the burner head 25 has a flame outlet 3 having a larger opening area than the opening 25a.
2 are formed. A mesh is provided inside the flame outlet 32. The igniter 28 is arranged so that the ignition portion 28c faces the flame outlet 32. Further, in the present embodiment, the igniter 28
The ignition portion 28c is configured to be slightly inclined toward the flame outlet 32.

The portable gas stove according to the present embodiment is used as follows.

The flammable gas in the pressurized state passes from the gas cartridge 20 through the gas tube 23 through the gas stopper 23 through the appliance plug 22 through the gas plug 23 to the joint block 24.
Sent to Next, the combustible gas is supplied to the joint block 2
4 to the generator 31.

As described above, since the generator 31 is disposed close to the burner head 25, the generator 31 is heated by the combusted mixed gas ejected from the burner head 25. Therefore, the generator 31
The mixed gas passing through the inside is also heated, becomes a high-temperature mixed gas, and is sent to the mixing pipe 26.

The mixing tube 26 has a plurality of openings 2 on its surface.
6a is formed, and external air is sucked into the mixing tube 26 from the opening 26a by the negative pressure generated when the combustible gas passes through the inside of the mixing tube 26. The combustible gas is
Thus, the mixture with the air taken in from the opening 26a becomes a mixed gas of combustible gas and air.

After the mixed gas enters the burner head 25, it is ejected from the opening 25 a and ignited by the igniter 28 arranged close to the burner head 25. The ignited mixed gas becomes a burning state,
A flame gushes from the opening 25a.

By this flame, cooking utensils, food items (not shown), etc. placed on the gorge 27 are heated.

The conventional portable gas stove shown in FIG. 7 has a disadvantage that the upper end of the igniter 19 easily swings because the igniter 19 is supported by the support base 19a only at the lower end thereof. On the other hand, in the gas stove according to the present embodiment, the igniter is supported by the mixing tube at both the upper end and the lower end. That is, at the lower end, the igniter is supported by the mixing tube via the projection formed on the first cover portion of the igniter cover, and further, at the upper end, by the igniter support member to the mixing tube. It is supported for. Therefore, the upper end of the igniter does not swing, and the spark emitted from the igniter can be reliably directed to the flow of the mixed gas.

Further, since both the projecting portion and the igniter support member in the first cover portion of the igniter cover can be arranged at any height of the igniter, the positional relationship with other components other than the igniter can be obtained. , Each can be arranged at an optimal position. The positions where the protrusions and the igniter support member are arranged are not limited to the lower end and the upper end of the igniter, respectively.

[0059]

As described above, according to the igniter support structure of the portable gas stove according to the present invention, the igniter is supported by the mixing tube at each of the upper end and the lower end. Therefore, the upper end of the igniter does not swing, and the spark emitted from the igniter can be reliably directed to the flow of the mixed gas.

[Brief description of the drawings]

FIG. 1 is a front view of an embodiment of a gas stove having a burner structure for a portable gas stove according to the present invention.

FIG. 2 is a top view when the gas stove shown in FIG. 1 is viewed from above.

FIG. 3A is a top view of an igniter, and FIG.
3B is a front view of the igniter, and FIG. 3C is a side view of the igniter.

FIG. 4A is a top view of the igniter cover, and FIG. 4B is a side view of the igniter cover.

FIG. 5 is a plan view of an igniter support member.

FIG. 6 (a) is a top view of the generator, and FIG.
6B is a front view of the generator, and FIG. 6C is a side view of the generator.

FIG. 7 is a front view of a conventional portable gas stove.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Portable gas stove 11 Gas cartridge 12 Gas burner 12 13 Gasket 14 Instrument plug 15 Gas flow control spindle 16 Burner head 17 Mixing pipe 18 Gotoku 19 Electric igniter 20 Gas cartridge 21 Gas stove main body 22 Instrument plug 23 Gas tube 24 Joint block 25 Burner head 26 Mixing pipe 27 Gotoku 28 Igniter 29 Igniter cover 30 Igniter support member 31 Generator

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) F24C 3/10 F24C 3/10 F

Claims (5)

[Claims] 1. A mixing pipe having an open end through which a mixed gas of combustible gas and air is discharged, a burner head having an opening on a surface from which the mixed gas discharged from the mixing pipe is jetted, and the burner head An igniter supporting structure for supporting the igniter in a portable gas stove comprising at least an igniter for igniting the mixed gas discharged from the igniter, wherein the igniter is supported by the mixing pipe both in the vicinity of the lower end and in the vicinity of the upper end thereof An igniter support structure for a portable gas stove. 2. The igniter is housed inside an igniter cover, and the igniter cover is
The igniter cover has a projection projecting in one direction, the projection having an opening substantially equal to the inner diameter of the mixing tube, and the igniter cover engaging the projection with the mixing tube. The igniter support structure for a portable gas stove according to claim 1, wherein the igniter support structure is fixed to the mixing tube. 3. The igniter includes a base block extending in one direction, a pillar extending in a direction perpendicular to the base block, an ignition portion extending from a tip of the pillar, and movable in the same direction as the base block. A igniter cover, wherein the igniter cover includes a first cover portion covering the base block,
The igniter support structure for a portable gas stove according to claim 2, comprising a second cover portion covering the pillar. 4. The igniter support structure of a portable gas stove according to claim 3, wherein an area of the first cover portion located above the switch is bent obliquely upward. . 5. The igniter is supported by the mixing tube via an igniter support member, wherein the igniter support member includes a ring-shaped member engageable with the mixing tube, and the ring-shaped member. Projecting outward from
4. The igniter cover according to claim 3, wherein the igniter cover comprises a projecting member having a shape that can be fitted to the second cover portion, and the projecting member has an opening formed therein so that the pillar can be fitted therein. An igniter support structure for the portable gas stove described.