JPH10332147A - Gas lighter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remarkably reduce a cost through reduction of the number of main parts which is molded, in a double flame type gas lighter. SOLUTION: A fuel distributor 20 comprises two parts of one being a body part 21 and a valve element 22 for regulating a flow rate, and the body part 21 comprises a vertical part 23 and a lateral part 34 and is molded and formed approximately in an inverted L-shape. A connection part 230 to the mixer 41 of a flameless combustion part 40 is protruded from the upper surface of the vertical part 23 of the body part 21, an orifice part 232 to increase a velocity of flow of fuel gas is formed at the connection part 230, and a connection part 240 of a combustion nozzle 31 of a flammable combustion part 30 is formed on the upper surface of the lateral part 24 of the body 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas lighter, and more particularly to a double-frame gas lighter in which the number of parts is reduced to reduce the cost.

[0002]

2. Description of the Related Art For example, when igniting a cigarette, a gas lighter using liquefied gas as a fuel is often used. This type of gas lighter has a flaming combustion type in which fuel gas is burned in the atmosphere, and a fuel gas is ejected from an orifice at high speed, and the air is taken in by the negative pressure generated at that time and mixed with the combustion gas. 2. Description of the Related Art There is known a flameless combustion type in which a fuel is diffused and burned in a combustion cylinder.

[0003] The former flame-burning type is useful for igniting cigarettes because a long red flame rises and can wrap the end of the cigarette, but it has a drawback that it is easily extinguished by a strong wind. On the other hand, in the latter non-flame combustion type, since the mixed gas is burned in the combustion cylinder, there is an advantage that the flame is strong and strong wind is strong, but there is a disadvantage that the flame is short, and the ignition of cigarettes is easily biased. .

Therefore, a so-called double flame type gas lighter has been proposed in which both flamed combustion and nonflame combustion are performed to compensate for each other's difficulties (Japanese Patent Laid-Open No. 3-18).
No. 6114, JP-A-6-288546, Japanese Utility Model Publication No. 5-18611, etc.).

For example, JP-A-6-288546 discloses that a fuel distributor is connected to a flaming combustion section having a combustion nozzle, and a flameless combustion section comprising an orifice member, a mixer, a diffuser and a combustion cylinder. Further, there is disclosed a structure in which fuel gas sent from a tank is distributed to a flaming combustion section and a non-flaming combustion section so that the supply and combustion of fuel can be performed smoothly.

[0006] By the way, such a gas lighter is desirably of the same cost as other lighters from the viewpoint of the marketability, and from the viewpoint of cost reduction, the whole or main parts can be molded by injection molding or die casting. is necessary.

[0007]

However, in the gas lighter described in the above-mentioned conventional publication, although the main parts are formed in a shape that can be molded, the orifice member is separate from the fuel distributor. In addition, since a flow rate adjusting mechanism is separately provided between the fuel distributor and the flaming combustion section, the number of parts is large, which causes a cost increase. Furthermore, since the combustion cylinder and the diffuser are separate bodies, this also increases the cost.

SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to provide a gas lighter capable of realizing a significant cost reduction by reducing the number of main parts that can be molded.

[0009]

Accordingly, a gas lighter according to the present invention comprises an orifice member for increasing the flow rate of a fuel gas, a mixer for sucking air by a differential pressure generated by the flow rate of the fuel gas, and mixing with the fuel gas. A diffuser that slows down and diffuses the flow rate of the mixed gas of the fuel gas and the air, and a flameless combustion section including a combustion cylinder that burns the slowed and diffused mixed gas; and a side of the flameless combustion section. A flaming combustion section comprising a combustion nozzle configured to burn fuel gas in the atmosphere, and a fuel distributor for supplying fuel gas from a tank to the non-flaming combustion section and the flaming combustion section. In the gas lighter provided, the fuel distributor is composed of two parts, a main body and a flow control valve element, and the main body has a substantially reverse L-shape that can be molded and has a vertical portion and a horizontal portion, Upper surface of the vertical part of the main body Is provided with a connection portion to the mixer, an orifice portion is formed at the connection portion to increase the flow rate of the fuel gas, and a first recess through which the fuel gas is supplied from the tank is provided at a vertical portion of the main body. A portion is formed from below in communication with the orifice portion, a connection portion of a combustion nozzle of the flaming combustion portion is formed on an upper surface of a lateral portion of the main body portion, and a fuel gas distribution portion is formed on a lateral portion of the main body portion. A second recess is formed from the side in communication with the connection between the first recess and the combustion nozzle, the flow regulating valve has a step on the outer peripheral surface of the tip, and a lateral portion of the main body. The fuel supply amount to the combustion nozzle can be adjusted by the press-fitting distance.

One of the features of the present invention is that the fuel distributor is composed of two parts, a main body of a shape that can be molded and a valve element for adjusting the flow rate, and an orifice part is formed in the main body. is there. As a result, the number of main components of the gas lighter can be reduced, and the manufacturing cost can be significantly reduced.

[0011] Specifically, the main body of the fuel distributor has a cylindrical connecting portion that is fitted into the lower end of the mixer and protrudes upward from the upper surface of the vertical portion of the main body. A fuel supply nozzle serving as a first recess into which a fuel gas is supplied by fitting an upper end of a fuel supply nozzle extending from a tank into a vertical portion of the main body portion by sealing and forming a small diameter hole to form an orifice portion. A nozzle insertion hole is formed from below in communication with the small-diameter hole at the upper end of the connection portion, and the fuel supply nozzle insertion hole has the same diameter in the axial direction or has a shape that is reduced in diameter at an upper portion so as to be moldable. A combustion nozzle insertion hole into which the lower end of the combustion nozzle of the flaming combustion part is inserted is formed on the upper surface of the lateral portion of the main body, and the lateral portion of the main body is used as a second recess for adjusting the flow rate. Connect the valve body press-fitting hole to the fuel supply nozzle fitting hole and the combustion nozzle fitting hole from the side. It can be configured to form.

Here, the combustion nozzle of the flaming combustion portion is fitted into the fitting hole of the main body of the fuel distributor. However, instead of the fitting hole, a connecting portion is projected and the combustion nozzle is fitted outside. ,
Or you may make it connect with a connection hose.

Further, the cost can be further reduced by integrating the combustion cylinder and the diffuser. That is, the combustion cylinder and the diffuser are formed in a concentric double cylindrical shape, and the lower part of the combustion cylinder and the intermediate part of the diffuser are sealed and connected to each other to be integrally formed. The lower end of the diffusion part is connected to the upper end of the mixer. It is preferable that the connection can be made possible, the upper end of the cylindrical shape is closed, and a window is formed in a portion of the side surface inside the combustion cylinder so that the flow velocity of the mixed gas of the fuel gas and the air can be reduced and diffused.

In addition, the fuel distributor has a conventional structure,
By integrating the combustion cylinder and the diffuser, it is possible to reduce the number of parts and thus reduce the cost, which is the object of the present invention.

That is, according to the present invention, an orifice member for increasing the flow rate of a fuel gas, a mixer for sucking air and mixing with the fuel gas by a differential pressure generated by the flow rate of the fuel gas,
A diffuser that slows down and diffuses the flow rate of the mixed gas of the fuel gas and the air, and a flameless combustion section including a combustion cylinder that burns the slowed and diffused mixed gas; and a side of the flameless combustion section. A flaming combustion section comprising a combustion nozzle configured to burn fuel gas in the atmosphere, and a fuel distributor for supplying fuel gas from a tank to the non-flaming combustion section and the flaming combustion section. In the gas lighter provided, the combustion cylinder and the diffuser form a concentric double cylindrical shape, and the lower part of the combustion cylinder and the intermediate part of the diffuser are mutually sealed and integrally formed, and the diffusion part is formed. The lower end is connectable to the upper end of the mixer, the upper end of the cylinder is closed, and a window is formed in a portion of the side surface in the combustion cylinder to reduce the flow rate of the mixed gas of the fuel gas and the air. Gas lighter characterized by being able to spread It is possible to provide.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to specific examples shown in the drawings. 1 to 5 show a preferred embodiment of a gas lighter according to the present invention. In the drawing, a case 10 is made of a metal material or a synthetic resin material, an upper end of the case 10 is opened, and a lid 1 is provided at the upper end opening.
The cover 11 is supported on the case 10 by an arm 12 so as to be swingable in a rearward direction (to the right in FIG. 1), and the arm 12 is formed with a projection 13.

A well-known high-voltage generator 14 is arranged in the case 10 below the rear of the lid 11.
Reference numeral 4 indicates that a high voltage is generated when the knob 15 is pressed downward by the projection 13 of the arm 12 of the lid 11.

A tank 16 for storing fuel gas is formed in the lower half of the case 10, and a fuel gas discharge port of the tank 16 is closed by a control valve 17 so as to be openable and closable. The fuel gas is discharged from the fuel supply nozzle on the front end side by sliding upward.

A lever 18 is locked to the neck of the fuel supply nozzle portion of the control valve 17, and the lever 18 is swung in a seesaw shape by the downward slide of a knob 15 of the high voltage generator 14, so that the control valve 17 is operated. It is configured to slide upward against the spring force of the spring member 19.

A fuel distributor 20 is provided above the tank 16 in the case 10 so as to be connected to the fuel supply nozzle at the tip of the control valve 17. The flameless combustion section 40 is connected to the fuel distributor 2
0, the flaming combustion section 30 and the non-flaming combustion section 40
The slide valve 8 slides up and down together with the control valve 17.

As shown in FIGS. 2 and 4, the fuel distributor 20 is composed of a main body 21 and a flow control valve 22. The main body 21 is composed of a vertical portion 23 and a horizontal portion 24. It has a substantially inverted L-shape that can be molded.

On the upper surface of the vertical portion 23 of the main body 21, a cylindrical connecting portion 230 having a truncated conical end is provided to protrude upward.
The connecting portion 230 is set to have an outer diameter that can be fitted into the lower end of the mixer 41 of the flameless combustion portion 40, the upper end of the connecting portion 230 is closed, and a small-diameter hole 231 of, for example, 60 μm is formed through a pin at the time of molding. Thus, an orifice portion 232 for increasing the flow rate of the fuel gas is formed.

A fuel supply nozzle fitting hole 233 as a first recess into which a fuel gas is supplied by fitting a fuel supply nozzle portion of the control valve 17 through a bush into the vertical portion 23 of the main body 21 is provided. The fuel supply nozzle fitting hole 233 is formed from below, and communicates with the small-diameter hole 231 of the connecting portion 230, and is reduced in diameter at an upper portion thereof to have a shape that can be molded.

On the upper surface of the horizontal portion 24 of the main body 21, a combustion nozzle fitting hole (combustion nozzle connection portion) 240 into which the lower end of the combustion nozzle 31 of the flaming combustion portion 30 is fitted is formed to project upward. Further, a flow-regulating valve body press-fitting hole 241 as a second recess is formed in the lateral portion 24 of the main body 21 from the side so as to communicate with the fuel supply nozzle fitting hole 233 and the combustion nozzle fitting hole 240. I have.

Since the main body 21 of the fuel distributor 20 has such a shape that it can be molded, it is molded using, for example, a synthetic resin material.

On the other hand, the flow regulating valve body 22 is made of a synthetic resin material or a metal material, and a step is formed on the outer peripheral surface of the front half portion thereof. The fuel supply amount to the combustion nozzle 31 is adjusted by the press-fitting distance.
Although a structure in which the flow rate is adjusted by screw advance / retreat is also conceivable (for example, see Japanese Patent Application Laid-Open No. Hei 6-288546),
In that case, it is necessary to rotate the valve body, and the work is not only complicated, but also the adjustment work is easily affected by the screw accuracy.However, when adjusting the flow rate by press fitting, the valve body is measured while measuring the flow rate. It is only necessary to press-fit and stop the press-fitting at the position of the optimum flow rate, so that not only the operation is simple, but also the automation is easy.

The flaming combustion section 30 comprises a metal material or ceramic combustion nozzle 31 extending in the vertical direction. The lower end of the combustion nozzle 31 is fitted into a fitting hole 240 of the fuel distributor 20. The upper end of 31 is slidably housed in the first holding hole 51 of the frame 50, and the first holding hole 51 penetrates upward.

In the flameless combustion section 40, as shown in FIG. 2, a cylindrical mixer 41 and a mixer 4 into which the connecting section 230 of the fuel distributor 20 is slidably fitted at the lower end.
The upper end portion 1 is composed of a diffuser 42 into which the upper end portion is fitted, and a combustion cylinder 43 integrally formed with the diffuser 42.

The mixer 41 is manufactured using a synthetic resin material, and the orifice portion 2 at the tip of the connection portion of the fuel distributor 20 is formed.
An air intake port 410 is formed at a position corresponding to 32, and air is taken in and mixed with the fuel gas by the negative pressure of the high-speed fuel gas passing through the orifice portion 232.

The diffuser 42 and the combustion cylinder 43 are concentric double cylinders, and the lower part of the combustion cylinder 43 and the middle part of the diffuser 42 are closed and connected to each other. The upper end of the mixer 41 is fitted into the portion, and the cylindrical upper end of the diffusion portion 42 is sealed, and the bottom of the sealed wall is projected downward in a triangular pyramid so as to rectify the mixed gas flow outward. It has become. Further, four windows 421 are formed facing each other at a portion inside the combustion cylinder 43 on the side surface of the diffuser 42 so that the mixed gas flow is decelerated and diffused into the combustion cylinder 43.

The combustion cylinder 43 and the diffuser 42 are molded using a heat-resistant material such as ceramics, and the window 421 of the diffuser 42 is formed by fitting a mold at the time of molding. .

A pair of electrodes 44 are inserted into the combustion cylinder 43, and the electrodes 44 are electrically connected to the high voltage generator 14, and generate a spark when a high voltage is applied to generate a mixed gas. Is to be burned.

The upper end of the combustion cylinder 43 is fitted and held in a large-diameter second holding hole 52 adjacent to the first holding hole 51 of the frame 50 via metal material or ceramic holders 45 and 46. The second holding hole 52 is penetrated upward,
A spiral catalyst wire 47 is held between the holders 45 and 46.

As shown in FIG. 5, the frame 50 is attached to the case 11 by three (or a plurality of) projections 53 to reduce combustion heat transmitted to the case 11 and the case 11 becomes hot. It is designed to prevent that. If the frame 50 is fixed to the case 11 with a plate or the like, the combustion heat is immediately transmitted to the case, and the case 11 may become hot and cannot be held by hand. However, as described above, the frame 50 is When the case 11 is fixed to the case 11, it is difficult for the heat of combustion to be transmitted to the case 11, and the case 11 can be held by hand with confidence.

[Brief description of the drawings]

FIG. 1 is a sectional configuration view showing a preferred embodiment of a gas lighter according to the present invention.

FIG. 2 is a side view showing a cross-sectional configuration of a main part in the embodiment.

FIG. 3 is a front view of FIG. 2;

FIG. 4 is a sectional view showing a fuel distributor.

FIG. 5 is a plan view showing the gas rider with a lid removed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Case 11 Lid 16 Fuel tank 20 Fuel distributor 21 Main part 22 Valve element for flow rate adjustment 23 Vertical part 230 Connecting part 231 Small diameter hole 232 Orifice part 233 Fuel supply nozzle fitting hole (first recess) 24 Horizontal part 240 Fuel nozzle Fitting hole (connecting part) 241 Flow rate adjusting valve element press-fitting hole (second recess) 30 Flaming combustion part 31 Burning nozzle 40 Flameless combustion part 41 Mixer 42 Diffusion part 421 Window part 43 Combustion cylinder 50 Holder

Claims (4)

[Claims] 1. An orifice member for increasing the flow rate of fuel gas, a mixer for sucking air and mixing with fuel gas by a differential pressure generated by the flow rate of the fuel gas, and reducing the flow rate of the mixed gas of fuel gas and air. A flameless combustion section comprising a diffuser that diffuses and diffuses, and a combustion cylinder that burns the mixed gas decelerated and diffused, and is disposed adjacent to a side of the flameless combustion section and burns the fuel gas in the atmosphere. A gas lighter comprising: a flaming combustion section comprising a combustion nozzle; and a fuel distributor for distributing fuel gas from a tank to the non-flaming combustion section and the flaming combustion section. The main body has a generally inverted L-shape that can be molded and includes a vertical portion and a horizontal portion. A connecting portion is projected, and the connecting portion has An orifice portion for increasing the gas flow rate is formed, and a first recess through which fuel gas is supplied from a tank is formed in a vertical portion of the main body portion from below in communication with the orifice portion. A connection portion of the combustion nozzle of the flaming combustion portion is formed on the upper surface of the portion, and a second recess for distributing fuel gas communicates with a connection portion of the first recess and the combustion nozzle on a lateral portion of the main body. The valve body for flow adjustment has a step on the outer peripheral surface of the tip, and is press-fitted into a press-fit hole in a lateral portion of the main body, and the amount of fuel supplied to the combustion nozzle is determined by the press-fit distance. A gas lighter characterized by being adjustable. 2. A cylindrical connecting portion fitted into a lower end portion of the mixer protrudes upward from an upper surface of a vertical portion of the main body portion,
An upper end of the connection portion is closed and a small-diameter hole is formed to form an orifice portion. An upper end portion of a fuel supply nozzle extending from a tank is fitted into a vertical portion of the main body portion, and a first gas is supplied thereto. A mold in which a fuel supply nozzle insertion hole as a recess is formed from below in communication with the small-diameter hole at the upper end of the connection portion, and the fuel supply nozzle insertion hole has the same diameter in the axial direction or is reduced in diameter at an upper portion. On the upper surface of the lateral portion of the main body, a combustion nozzle insertion hole into which the lower end of the combustion nozzle of the flaming combustion portion is inserted is formed from above while forming a shape that can be molded. 2. The gas lighter according to claim 1, wherein the press-fitting hole for the flow regulating valve as the second recess is formed from the side so as to communicate with the fuel supply nozzle fitting hole and the combustion nozzle fitting hole. 3. The combustion cylinder and the diffuser have a concentric double cylindrical shape, and are integrally connected to each other at a lower portion of the combustion cylinder and an intermediate portion of the diffuser, and the diffusion portion has a lower end. A part can be connected to the upper end of the mixer, and the upper end of the cylinder is closed and a window is formed in a part of the side surface in the combustion cylinder to reduce and diffuse the flow rate of the mixed gas of the fuel gas and the air. The gas lighter according to claim 1, which is enabled. 4. An orifice member for increasing the flow rate of the fuel gas, a mixer for sucking air and mixing with the fuel gas by a differential pressure generated by the flow rate of the fuel gas, and reducing the flow rate of the mixed gas of the fuel gas and the air. A flameless combustion section comprising a diffuser that diffuses and diffuses, and a combustion cylinder that burns the mixed gas decelerated and diffused, and is disposed adjacent to a side of the flameless combustion section and burns the fuel gas in the atmosphere. In a gas lighter provided with a flaming combustion part comprising a combustion nozzle and a fuel distributor for supplying fuel gas from a tank to the non-flaming combustion part and the flaming combustion part, the combustion cylinder and the diffuser are concentric. The lower part of the above-mentioned combustion cylinder and the middle part of the above-mentioned diffuser are mutually closed and connected mutually and are formed integrally, and the above-mentioned diffusion part has a lower end part connectable with the upper end of the above-mentioned mixer, Cylindrical top closed and side Gas lighters, characterized in that the window portion to the site of the combustion cylinder is formed and has a possible reduction diffusion flow velocity of a gas mixture of the fuel gas and air.