JPH0518611Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial field of application] This invention is a igniter, especially for outdoor use in windy areas, and is suitable for use with conventional torches, lighters, etc. on barbecue stoves,
To provide a highly safe igniter that can easily be used to ignite bonfires, cigarettes, fireworks, etc. even under conditions where it is difficult to ignite them.

[Background of the idea]

BACKGROUND ART Conventionally, in addition to the above-mentioned instruments for igniting objects to be ignited, there have been known instruments such as matchsticks and lighters, as well as so-called gas burners, which are mainly presented as being resistant to wind. This gas burner, which mixes air and fuel gas to create a blue torch with a very long flame, is typically used for industrial purposes and is operated by a professional engineer. Therefore, although gas burners do have strong firepower and are not easily affected by wind, etc., the flames are extremely long and are too dangerous for ordinary people to use, making them unsuitable as igniters. There is.

Therefore, the present invention was devised by paying attention to the conventional situation, and includes a first combustion mechanism that forcibly mixes fuel gas with air and causes internal combustion to produce a bluish-white flame that is strong against wind. In addition, by adding a second combustion mechanism to the combustion state of the first combustion mechanism, it is possible to create a visible red-yellow flame, and the length of the flame is not longer than necessary, making it safe. The purpose of this invention is to provide a lighting device that retains its characteristics.

[Means for solving problems]

In order to achieve this purpose, the igniter according to the present invention branches the gas flow path connected to the fuel tank to form first and second combustion mechanisms, and the first combustion mechanism is configured to handle the fuel gas. A mixing tube provided with an intake hole that sucks air by the negative pressure generated by the accelerated flow rate of the fuel gas, and a diffusion device that slows down the flow rate of the mixed gas with the air in the mixing tube and diffuses it. and a combustion tube connected to the diffuser thereof and facing the ignition means, while the second combustion mechanism is equipped with an adjustment means for adjusting the gas amount balance with the first combustion mechanism, It is characterized in that the opening of the nozzle pipe is located near the opening of the combustion tube.

[Function] As configured as described above, the igniter according to the present invention is resistant to wind due to the first combustion mechanism, and can continuously obtain a flame that is not longer than necessary for complete combustion. The main combustion part of the flame obtained by the first combustion mechanism is carried out inside the combustion cylinder, and it burns completely, and in broad daylight it is pale and difficult to see. By supplementing with a visible flame, it will not be extinguished by the wind, making it easier to confirm and maintaining safety.

〔Example〕

Next, an example of implementation of the present invention will be described in detail with reference to FIGS. 1 to 3.

FIG. 1 is a sectional view of a lighting device embodying the present invention, FIG. 2 is a front view, and FIG. 3 is a perspective view. In the figure, reference numeral 1 denotes a base holder portion, and this base holder portion 1 becomes a grip portion during use. A fuel tank 2 containing liquefied fuel gas is provided in the base holder portion 1, and a fuel gas inlet 3 is provided in the fuel tank 2 so that fuel gas can be repeatedly injected and refilled. It's summery.

Further, in the figure, reference numeral 4 denotes a trigger for operation, and this trigger 4 is held in the base holder portion 1 so as to be slidable in the front-back direction of the igniter. The trigger 4 has a housing with an open rear surface, a diagonal cam 5 is formed approximately in the center, and a high voltage generating mechanism 6 is provided at the lower end.
A pressing portion 7 is formed which is activated by pressing.

Reference numeral 8 denotes an operator for operating the on-off valve 9. The operator 8 has a generally L-shape as a whole, and the curved portion thereof is fitted onto a shaft 10 so as to be rotatable. One end side 11 of this operator 8 is brought into contact with the lower end of a diagonal cam 5 formed on the trigger 4, and the other end side 12 is engaged with an on-off valve 9 to cause the trigger 4 to slide. Then, the diagonal cam 5 pushes down one end 11 of the operator 8 and rotates about the shaft 10, so that the other end 12 opens the on-off valve 9, and fuel gas is ejected from the fuel tank 2, and vice versa. It will be stopped by the movement of. 2a is a rotary adjustment lever that adjusts the amount of fuel gas ejected from the fuel tank 2. Also, at this time, the pressing part 7 formed on the trigger 4 presses the high voltage generation mechanism 6,
The internal tapping action generates a high voltage that is sent to the ignition means described below.

Further, reference numeral 1a in the figure is a combustion mechanism holder section connected to the base body holder section 1, and a through hole 1c is bored in the base of this combustion mechanism holder section 1a, and this through hole 1c is connected to the base body holder section 1. It is positioned by fitting into a protrusion 1b protruding from. Further, 13 is a fuel gas flow path connected to the fuel tank 2 side by a joint member 13c, and this flow path 13 is a flow path 13a for the first combustion mechanism 14.
and a flow path 13b for the second combustion mechanism 15.

The first combustion mechanism 14 is provided with first and second filters 16a and 16b at the tip of a flow path 13a, and a nozzle plate 17 is provided on the front side of the second filter 16b. A fine nozzle hole 18 is bored approximately in the center of this nozzle plate 17, and the fuel gas is narrowed down to a small diameter by the nozzle hole 18, and the fuel gas is ejected through the nozzle plate with a high flow velocity. Further, a mixing pipe 19 is provided at the tip side of the flow path 13a.
is attached to this mixing tube 19, and an intake hole 2 that sucks air by the negative pressure generated by the increased flow rate of the fuel gas that has passed through the nozzle hole 18.
1 is bored, and a mixing passage 20 in the mixing pipe 19
In this method, complete combustion of fuel gas is made possible to obtain a mixed gas with air.

The tip 27 of the mixing tube 19 has a stepped, large-diameter structure, and the diffuser 2 that forms a diffusion chamber 23 communicating with the mixing path 20 is disposed on the inner wall of the tip 27.
2 is installed. In the diffuser 22 in this embodiment, a cone 25 with its tip facing the primary side is formed at the tip of a cylindrical body 24, and a predetermined size is set in advance in the cylindrical body 24 to spread light across the cone 25. It has a structure in which the holes 26 are opened in a cross shape. Furthermore, the base end of a combustion tube 29 is fitted onto the outer wall of the tip 27 of the mixing tube 19 so as to surround the diffuser 22. A tip end of a discharge electrode 30 holding a holder 30a made of a non-conductive heat-resistant material, such as ceramic, is protruded from a substantially middle position inside the combustion tube 29. The resulting high voltage is then supplied.

On the other hand, the second combustion mechanism 15 is connected to the branched flow path 1
A large-diameter pressure regulating pipe 34 is screwed onto the outer wall surface of the combustion tube 3b via an O-ring 34b that prevents fuel gas from leaking. A fuel gas nozzle pipe 13 that substantially matches the notch 29a formed around the opening.
d are connected. Further, inside the pressure regulating pipe 34, a wire mesh 31, a pressure regulating sponge 32, and a filter 33 are provided in order from the primary side as a fuel gas pressure regulating section at the tip of the flow path 13b, and approximately in the center of the filter 33 is a nozzle. A hole 35 is formed. A pressure regulating section composed of a pressure regulating sponge 32 and the like is a pressure regulating pipe 3.
4 to change the degree of compression of the pressure regulating sponge 32 to adjust the amount of fuel gas ejected and control the amount of fuel gas supplied by the second combustion mechanism 15 to maintain balance. If the pressure regulating section described above is narrowed down to the maximum, most of the gas amount will be guided to the first combustion mechanism 14, and most of the gas will be directed to either the first combustion mechanism 14 or the second combustion mechanism 15. You can select and adjust the gas supply.

In the above-described igniter according to the present embodiment, when the trigger 4 is pulled, the operator 8 is rotated, the on-off valve 9 is opened, and the high voltage generating mechanism 6 is activated. When the on-off valve 9 opens, the fuel gas in the fuel tank 2 is adjusted in advance by the adjustment lever 2a and is supplied to the flow path 13, and then passes through the branched flow paths 13a and 13b to the first combustion mechanism 14 and the second combustion mechanism 14. It is guided to the combustion mechanism 15. As mentioned above, in the first combustion mechanism 14,
Fuel gas with a narrowed diameter is ejected from the nozzle hole 18 of the nozzle plate 17 into the mixing passage 20 of the mixing pipe 19 through the filters 16a and 16b at a high flow rate, and the negative pressure generated around the fuel gas causes the intake hole to close. Air is sucked into the mixing pipe 19 from 21, and in the mixing passage 20, the fuel gas from the nozzle hole 18 and air are mixed in a state suitable for complete combustion. This mixed gas is mixed and ejected radially in the mixing path 20, and is ejected from the diffuser 2.
It enters the diffusion chamber 23 of No. 2, collides with the outer surface of the cone 25, bends, and is further decelerated, and the diffusion hole 26
It is sent into the combustion tube 29 in a diffused state. In the combustion tube 29, a part of the mixed gas flows into the combustion tube 29.
The entire mixed gas ejected by colliding with the inner wall of the fuel tank is further decelerated and diffused, making it possible to ignite and continue combustion. Further, in the second combustion mechanism 15, the pressure of the fuel gas from the branched flow path 13b is regulated by the interaction between the pressure regulating pipe 34 and the pressure regulating sponge 32 of the pressure regulating section, and the pressure is regulated by the interaction between the pressure regulating pipe 34 of the pressure regulating section and the pressure regulating sponge 32. The gas is sent to the nozzle pipe 13d while maintaining a balance in the amount of gas ejected, and continuous combustion is started at the tip opening of the nozzle pipe 13d using the flame in the first combustion mechanism 14 as ignition means. In the first combustion mechanism 14, the high voltage generated in the high voltage generation mechanism 6 by operating the trigger 4 is applied to the discharge electrode 3.
0 and the inner wall of the combustion tube 29 serving as the power receiving electrode, a discharge spark is created, and the mixed gas in the combustion tube 29 is ignited. The mixed gas in the combustion tube 29 is in a state of sufficient mixing with air for complete combustion, and the flow velocity is reduced to a level that allows continuous combustion, so complete continuous combustion with pale blue flame occurs in the combustion tube 29. The gas from the second combustion mechanism 15 that is ignited by the flame in the first combustion mechanism 14 is similar to that of a general lighter, and at the tip of the second combustion mechanism 15 an appropriate amount of gas that is not mixed with air is emitted. The flame color obtained from the entire igniter by ejecting the flame becomes a visible color close to the usual reddish-yellow color, and is supplied to the outside through the opening of the combustion mechanism holder 1a. In the figure, reference numerals 36, 36, . . . are through holes for air convection, which serve both to suck air into the intake hole 21 and to radiate heat from the combustion mechanism holder portion 1a.

[Effect of idea]

As mentioned above, according to the igniter according to the present invention,
It has a first combustion mechanism and a second combustion mechanism, and the first combustion mechanism can perform complete combustion with the mixed gas sufficiently mixed with air in the combustion cylinder. The flame generated by the combustion mechanism can be created inside the combustion tube, so it will not be extinguished by wind or other factors. In addition, the flame produced by this first combustion mechanism becomes a bluish-white flame due to complete combustion, making it difficult to see in daylight, but the combustion produced by the second combustion mechanism adds visibility with a red-yellow flame. Unlike industrial burners, the flame is not unnecessarily long, safety is maintained, and the flame caused by this second combustion mechanism does not blow out the flame of the first combustion mechanism by wind, etc.
It has become a source of fire and continues to burn. That is, in the igniter according to the present invention, the flame will not be extinguished even in the presence of wind, and the flame will be visible, ensuring safety.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the igniter embodying the present invention, FIG. 2 is a front view thereof, and FIG. 3 is a perspective view thereof. 1...Basic holder part, 2...Fuel tank, 4
...Trigger, 6...High voltage generation mechanism, 8...Controller, 13...Flow path, 13a, 13b...Branched flow path, 14...First combustion mechanism, 15...Second Combustion mechanism, 17... Nozzle plate, 18... Nozzle hole, 19... Mixing pipe, 21... Intake hole, 22...
... Diffuser, 25 ... Cone, 29 ... Combustion tube, 3
0...discharge electrode.

Claims (1)

[Scope of utility model registration request] The gas flow path connected to the fuel tank is branched to form first and second combustion mechanisms, and the first combustion mechanism is generated by the fuel gas flow velocity promoting means and the accelerated fuel gas flow velocity. A mixing tube with an intake hole that draws in air by negative pressure, a diffuser that slows down and diffuses the flow rate of the mixed gas with the air in the mixing tube, and an ignition means connected to the diffuser. and a combustion tube, while the second combustion mechanism is provided with an adjusting means for adjusting the gas amount balance with the first combustion mechanism, and the opening of the nozzle pipe is positioned near the opening of the combustion tube. A igniter characterized by: