JP2602585Y2 - Gas lighter - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a gas lighter, in which a diffusion flame, which is a normal red-yellow visible flame, does not extinguish even when affected by wind or the like, and can continuously maintain combustion. Regarding improvement of gas lighters.

[0002]

Background of the Invention In general, diffusion flames are used as flames for gas lighters. Diffusion flames have poor wind resistance, making it difficult to maintain stable ignition and combustion especially when used outdoors. . Therefore, recently, in order to enhance wind resistance, a mechanism has been developed in which a premixed gas mixture is ignited inside a combustion cylinder and burned.

However, the premixed flame, which is a combustion flame of the premixed gas mixture (hereinafter referred to as a premixed flame), is in a completely burned state and has a bluish white color. It is difficult to check the combustion state. In order to compensate for such a situation, and to re-ignite in the event that the fire goes out due to the influence of wind or the like, a technique for maintaining a red-hot state by attaching a metal wire or a catalyst member to the opening of the combustion cylinder has been developed. However, it is possible to maintain and confirm the burning of the metal wire and the catalyst member etc. inside the combustion cylinder, but it is exposed from the opening of the combustion cylinder when igniting an object to be ignited. It is not possible to confirm the size of the combustion flame outside, that is, the combustion criticality.

[0004] In order to make it easier to visually confirm the premixed flame generated in the combustion cylinder, a second fuel gas ejection flow path is formed by diverting the fuel gas ejected from the fuel tank. A mechanism has been developed to generate diffusion flames along with premixed flames.

Here, in order to obtain the above-mentioned premixed gas mixture, the jet velocity of the fuel gas is increased in the flow path of the fuel gas, and a nozzle hole (orifice) for sucking ambient air at a negative pressure is used. ) Must be deployed. On the other hand, it is necessary to balance mutual combustion between the gas ejection amount of the second fuel gas ejection passage and the gas flow amount ejected from the nozzle hole for obtaining the premixed gas mixture. In order to balance the mutual combustion, a second nozzle hole (orifice) for controlling the gas ejection amount is provided in the middle of the second fuel gas ejection flow path, so that the ignition of the object to be ignited is performed. Thus, a combustion flame which is convenient and is not affected by wind or the like can be obtained.

[0006]

However, in order to control the injection amount of the fuel gas in a balanced manner, it is required that the mutual nozzle holes (orifices) are formed with a very fine processing accuracy of the order of microns. Is extremely difficult. Furthermore, there is no structural difference in flow path resistance between the fuel gas injection flow path for generating the premixed flame and the fuel gas injection flow path for generating the diffusion flame, and the structural difference is gas. The jet pressure of
Even if the two nozzle holes are simply balanced numerically, it is difficult to obtain an ideal mutual combustion state.

On the other hand, the conventional gas lighter has a catalyst member attached to the opening of the combustion cylinder for the purpose of confirming combustion and effecting re-ignition. When the combustion flame is extinguished due to heat, the mixture gas continuously ejected reacts with the catalyst member, and the premixed flame is regenerated outside the combustion cylinder by the heat source. In this conventional gas lighter, the combustion state at the time of initial ignition is such that the premixed gas mixture has a combustion base formed at a deep position in the combustion cylinder, and a catalyst member provided at the opening of the combustion cylinder. Is not reacting, and a premixed flame is ejected to the outside of the opening of the combustion cylinder and is generated, and a phenomenon occurs in which the diffusion flame, which is a visible flame, is identified with the premixed flame. The combustion criticality becomes unclear.

[0008]

[Purpose of the Invention] The present invention has been made by focusing on the above-mentioned problems of the prior art. In order to maintain the combustion balance between the premixed flame and the diffusion flame, the flow rate of the fuel gas can be easily adjusted by an external operation. Further, it is an object of the present invention to provide a gas lighter that can effectively utilize a catalytic reaction of a catalyst member from the time of initial ignition to generate a diffusion flame with a more evident combustion criticality. .

[0009]

To achieve this object, a gas lighter according to the present invention distributes and jets a fuel gas in a fuel tank to generate a premixed flame and a diffusion flame which burns with the premixed flame. gas lighter which - in the as externally et rotational operation possible generation fuel gas passage of the diffusion flame, the flow rate adjusting mechanism having a pressure regulating member provided on the movable
Combustion of gas mixture downstream of the catalyst member
It is characterized by generating a flame.

[0010]

With the above configuration, the amount of fuel gas ejected in the fuel gas flow path for generating a diffusion flame can be reduced.
Appropriate balance between the amount of fuel gas that generates the premixed gas mixture and the amount of fuel gas to be ejected can be easily achieved by external operation, and it is possible to obtain an ideal combustion flame that maintains a proper balance with the premixed flame. it can. In addition, by burning at the downstream side of the catalyst member, combustion accompanied by a catalytic reaction is always obtained in the combustion cylinder, and the diffusion flame is more efficient by not reddening due to the combustion heat, and the combustion criticality is more clear. It becomes something.

[0011]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a vertical sectional view showing a gas lighter embodying the present invention, FIG. 2 is a vertical sectional view showing an upper portion of the fuel tank, FIG. 3 is a sectional view taken along the line XX in FIG. 2, and FIG. FIG. 5 is a partial cross-sectional front view of a movable member screwed to the receiving member, FIG. 6 is a plan view of the movable member, FIG. 7 is a plan view showing the mounting structure of the catalyst member, and FIG. 9A and 9B are plan views showing another mounting structure of the member, FIGS. 9A and 9B are cross-sectional views showing the mounting structure, and FIG. 10 is an exploded perspective view showing a diffuser and a diffuser holder.

In these figures, 1 is a case, 2
Is a fuel tank housed in the case 1 and fastened with screws 3. The fuel tank 2 is provided with a fuel gas suction cylinder 5 which is communicated with a fuel gas ejection amount adjusting mechanism 4.
The lower end portion of the joint pipe 6 is accommodated in the suction tube 5. A space between the outer periphery of the lower end portion of the joint pipe 6 and the inner periphery of the suction cylinder 5 is a fuel gas suction passage 8 communicating with an opening / closing valve mechanism 7 for ejecting fuel gas from the fuel tank 2. A coil spring 9 for energizing the on-off valve mechanism 7 is accommodated in the conduit 8. The joint pipe 6 has a supply hole 6b for supplying the fuel gas from the suction passage 8 to the inner hole 6a of the joint pipe 6, and a first gas ejection flow path (hereinafter, referred to as a first gas ejection flow path) for generating a premixed flame. The fuel gas is ejected from the upper part of the joint pipe 6 as a first flow path).

A gas injection tube 11 is fitted around the outer periphery of the distal end of the joint pipe 6 by press-fitting a tube packing 10 for preventing gas leakage. An orifice 12 which is a nozzle hole having a fine diameter for enhancing the jet flow velocity of the nozzle is formed. A filter 13 made of sintered metal, ceramic, fiber material, or the like is interposed between the tube packing 10 and the inner surface step 11a of the gas ejection tube 11 in order to filter gas impurities and dust. In the drawings, reference numeral 14 denotes a mounting nut for mounting the suction cylinder 5 to the fuel tank 2.

An upper end portion of the gas jetting cylinder 11 is press-fitted with a lower end portion of the mixing pipe 15, and the mixing pipe 15 is formed with intake ports 16, 16 communicating with the inside. The orifice 12 of the gas jetting cylinder 11 is located in the mixing pipe 15 and draws in outside air from the intake ports 16 and 16 due to the negative pressure effect of the fuel gas jetted from the orifice 12 to form a mixture of fuel gas and air (premixed). (Mixed gas mixture).

The upper end 15a of the mixing tube 15 is inserted into the lower end opening of the substantially cylindrical diffuser holder 17 in a loosely fitted state and is connected thereto. , The opening / closing valve mechanism 7 can be operated up and down. Further, the diffuser holder 17 is formed integrally with a flange 18 on the outer periphery, and in this embodiment, four fan-shaped columns 19, 19,. The lower end portion of the diffuser 20 is press-fitted and fixed.

The diffuser 20 has a diffuser holder 17 at the lower end.
Is formed into an inverted conical diffusion wall 21 which is loosely inserted into the upper opening of the upper surface and collides and decelerates and diffuses the mixture gas. The diffusion wall 21 is continuous with a cylindrical portion 23 having a horizontal hole 22 formed therein. A disk part 25 is formed on the upper part of the column part 23,
A vertical hole 24 formed at the center of the disk portion 25 communicates with the horizontal hole 22 described above. That is, the gaseous mixture gas decelerated by the diffusion wall 21 is diffused into the flow path from the horizontal hole 22 to the vertical hole 24 and the flow path beside the column portion 23 and the disk portion 25. The shape and structure of the diffuser 20 are appropriately adopted depending on factors such as the size of the combustion cylinder and the flow rate of gas, which will be described later, and are not limited to those shown in the present embodiment.

Further, a spacer ring 26 is fitted on the upper surface of the flange 18 with the lower end thereof in contact with the diffuser holder 17, and the spacer ring 26 surrounds the periphery of the diffuser 20. Further, a coil-shaped catalyst member 30 is attached to the upper opening of the spacer ring 26 at a position directly above the diffuser 20.

A combustion cylinder 29 is provided on the upper surface of the spacer ring 26.
The combustion cylinder 29 has an upper surface in communication with a flame port 32 opened to a flame port cover 31 fixed to an opening of the case 1. Further, a discharge electrode 28 that is electrically connected to the high-voltage generating mechanism 27 and generates ignition energy for the premixed gas mixture is provided inside the combustion cylinder 29.

On the other hand, in the present embodiment, in order to generate a diffusion flame, the fuel gas ejected from the fuel tank 2 to the suction passage 8 is branched to form a second gas ejection passage (hereinafter referred to as a second flow passage). Road) is formed as follows. Fuel tank 2
A partition wall 34c provided with a through hole 34 in a part thereof is formed,
On one side (left side in FIG. 3) of the partition wall 34c, a mounting hole 34a for a receiving member 35 described later is provided, and on the other side (right side in FIG. 3), a movable member 38 also described later.
The mounting hole 34b is provided symmetrically with the mounting hole 34a. A key groove 33 communicating with the suction passage 8 is formed in the mounting hole 34a of the receiving member 35 so that the fuel gas is introduced into the mounting hole 34a. In addition, mounting hole 3
An O-ring 36 for preventing gas leakage is attached to the outer periphery of the receiving member 35 press-fitted and fixed to 4a, and a female screw 37 is formed inside.

A movable member 38 is fitted in the mounting hole 34b, and a male screw 39 formed at the tip of the movable member 38 is inserted into the female screw 37 of the receiving member 35.
4 and screwed together. An O-ring 40 for preventing gas leakage is also attached to the outer periphery of the movable member 38, and one end of the male screw 39 is brought into contact with a stepped portion 38 a at the base end thereof to control the flow rate of the gas in a ring shape. A pressure adjusting member 41 is provided. The other surface of the pressure adjusting member 41 is brought into contact with the partition wall 34c by screwing the movable member 38 to the receiving member 35. Reference numeral 42 denotes an operation groove for rotating the movable member 38.

The mounting hole 3 of the movable member 38
4b, a fuel gas flow groove 43 is formed, and this flow groove 43 communicates with the lower end of the vertical hole 44. One end of a flexible joint tube 45 is press-fitted into the vertical hole 44. A pipe member 46 for stabilizing the press-fit state into the vertical hole 44 is fitted into the joint tube 45, and the outer wall of the joint tube 45 is expanded and press-fitted into the vertical hole 44, thereby forming a rigid inner wall of the vertical hole 44. The contact pressure with the fuel gas is increased to prevent side leakage and separation of fuel gas.

The joint tube 45 is bent around the lower end of the above-mentioned first flow path, and is press-fitted and connected to a rear end bent portion 47a of the crater pipe 47. This crater pipe 4
7 has a large-diameter portion 47b which is sandwiched between the inner wall surface of the flame port cover 31 and the outer wall surfaces of the combustion tube 29 and the spacer ring 26, and a part of the lower end of the large-diameter portion 47b. Are supported on the flange 18. Further, in this embodiment, the tip 47c of the crater pipe 47 is opened toward the inside of the combustion tube 29. The tip 47c of the crater pipe 47 may have not only a single opening but also a plurality of openings. Depending on the configuration of the first flow path and the second flow path, the joint tube 45 may be omitted and the crater pipe 4 may be omitted.
7 can be directly connected to the vertical hole 44, or the vertical hole 44 can be eliminated and connected to the flow groove 43.

In the drawing, reference numeral 48 denotes an opening / closing cap attached to the upper part of the case 1, and the opening / closing cap 48 is provided with an operation button 50 supported by a spring 49. The opening / closing cap 48 has a pivotal support leg 51, part of which is indicated by a chain line, supported by a support piece 52 of the fuel tank 2, and 53, a nozzle lever for operating the joint pipe 6 which is partly indicated by a chain line. .

Although one embodiment of the present invention is constructed as described above, the shape and the mounting structure of the catalyst member 30 are not limited to this. For example, as shown in FIGS. It can also be.

The gas lighter according to the present embodiment is configured as described above. When the opening / closing cap 48 is rotated in the direction of arrow A, the joint pipe 6 is pulled up by the action of the nozzle lever 53, the opening / closing valve mechanism 7 is opened, and gas from the fuel tank 2 gushes, and passes through the suction passage 8. The inner hole 6a of the joint pipe 6 and the mounting hole 34a (keyway 3
It is diverted to 3). The high-voltage generating mechanism 27 operates in accordance with the ejection of the fuel gas, and the discharge electrode 28
And a discharge is generated between the catalyst member 30 (30 a) and the pre-mixed gas mixture is ignited in the combustion cylinder 29 by the discharge spark, and mainly in the combustion cylinder 29 which is located above the catalyst member 30 (30 a). A premixed flame which is brought to a complete combustion state is generated with the deep portion as the base of the combustion flame. The discharge electrode 2
The discharge by 8 is not limited to between the catalyst member 30 (30a) and a dedicated terminal may be formed in the combustion cylinder 29.

On the other hand, in the second flow path, the fuel gas jetted from the key groove 33 through the mounting hole 34a into the mounting hole 34b passes through the pressure regulating member 41 mounted on the movable member 38, and the flow rate thereof is adjusted. Through the joint tube 45, the fuel is ejected from the tip end 47 c of the crater pipe 47 to the opening of the combustion tube 29. The normal fuel gas that has passed through the second flow path is ignited by the premixed flame already combusted in the combustion tube 29, and becomes a normal red-yellow visible flame, a diffusion flame. 32.

[0027]

The gas lighter according to the present invention operates and operates as described above. By providing a fuel gas flow rate adjustment mechanism that can be operated from the outside in the fuel gas ejection flow path that generates the diffusion flame, the gas in the first flow path and the second flow path is obtained to obtain a combustion flame suitable for ignition. The ejection flow rate can be easily balanced. In addition, since the catalyst member is provided in proximity to the diffusion mechanism, a premixed gas mixture is present immediately below the catalyst member from the beginning, so that a catalytic reaction by the catalyst member can be reliably obtained from the time of initial ignition. The state of the diffusion flame thus obtained has a sharp combustion criticality without assimilation with the premixed gas mixture.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a gas lighter embodying the present invention.

FIG. 2 is a vertical sectional view of an upper portion of a fuel tank.

FIG. 3 is a sectional view taken along line XX in FIG. 2;

FIG. 4 is a sectional view of a receiving member.

FIG. 5 is a partial cross-sectional front view of a movable member.

FIG. 6 is a plan view of a movable member.

FIG. 7 is a plan view showing a mounting structure of a catalyst member.

FIG. 8 is a plan view showing another catalyst member.

FIG. 9A is a sectional view showing a mounting structure of a catalyst member.

FIG. 9B is a cross-sectional view showing a mounting structure of another catalyst member.

FIG. 10 is an exploded perspective view showing a diffuser and a diffuser holder.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case 2 Fuel tank 5 Suction tube 6 Joint pipe 8 Suction path 10 Tube packing 11 Gas ejection tube 12 Orifice 13 Filter 15 Mixing tube 16 Intake port 17 Diffuser holder 18 Flange 20 Diffuser 26 Spacer ring 27 High voltage generating mechanism 28 Discharge electrode 29 Combustion cylinder 30 Catalyst member 30a Catalyst member 31 Flame port cover 32 Flame port 33 Key groove 34 Through hole 34a Mounting hole 34b Mounting hole 34c Partition wall 35 Receiving member 38 Movable member 41 Pressure regulating member 43 Distribution groove 44 Vertical hole 45 Joint tube 47 Crater pipe

Claims (2)

(57) [Scope of request for utility model registration] 1. A fuel gas in the fuel tank is partitioned jet gas lighter to produce a diffusion flame burning with premixed gas combustion flame and the premixed flame - in, externally et al generation fuel gas flow path of the diffusion flame rotation operation possible and then, pressure regulating member
A gas lighter characterized in that a flow rate adjusting mechanism provided with is provided movably. 2. A combustion flame of an air-fuel mixture gas downstream of a catalyst member.
The gas turbine according to claim 1, wherein
Ita.