JPH0343532B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in the gas flow rate adjustment mechanism of a plastic gas lighter, particularly a disposable gas lighter.

Conventionally, this type of disposable gas lighter has been equipped with a control valve to adjust the gas flow rate. In addition to configuring the structure to infiltrate the
The gas flow rate was adjusted by adjusting the compression ratio of the filter.

However, the flow rate adjustment using this filter is
The flow rate varies greatly depending on the material and performance of the filter, and the flame length changes over time, so if the user accidentally operates the flame adjustment lever, the flame may become excessive and cause burns. The dot was hot.

Also, for example, if the flame length is set too high and the lighter is used for a long time, the material of the lighter body is plastic, which has poor thermal conductivity compared to metal, resulting in an insufficient supply of vaporization heat of the liquefied gas, which flows out as a liquid, resulting in the Spitztein phenomenon. There was a risk of burns. Furthermore, since the liquefied gas remains in the nozzle, a flashlight phenomenon occurs, which may lead to a fire.

Focusing on this problem, for example, the US patent
Publication No. 4101262 uses a microporous membrane for the filter,
It has been proposed that a filter for limiting the maximum flame and a filter for controlling the flame are provided as separate mechanisms, but the thickness of the microporous membrane of this filter is approximately 20 to 30 μm.
There are problems in that it is easily damaged and is inconvenient to handle because of its small size, and there is also the problem that the cost increases due to the increase in the number of parts and assembly man-hours because it is a separate mechanism.

The present invention has been made to solve the above problems, and its purpose is to limit the flame so that it does not become excessive by adjusting the gas flow rate, and to have a simple mechanism that is extremely easy to handle. To provide a gas lighter that can easily produce a stable flame over a long period of time.

The above object is to provide a main body case equipped with a liquefied gas tank for storing liquefied gas, and a nozzle that can vaporize the liquefied gas, and at least a bottom portion of the nozzle to be slidably housed. a burner unit in which a gas flow path is formed;
A nozzle adjustment screw is provided to adjust the amount of liquefied gas ejected from the nozzle, an intermediate case is attached, and a lever is provided to raise and lower the nozzle to the intermediate case to release the liquefied gas, and a lever is provided to rotate the nozzle adjustment screw to adjust the nozzle. In a gas lighter comprising an adjustment knob for controlling the amount of liquefied gas released from the burner unit, an ignition device, and a windshield, the inflow end of the gas flow path of the burner unit is formed into a tapered shape, and A gas flow rate adjustment washer having a tapered portion that fits into a gas flow path, a microporous membrane provided in sequence between the gas flow rate adjustment washer and the suction core, a microporous membrane fixing member, and a stator. In addition, by rotating the nozzle adjustment screw, the compressibility of the microporous membrane is not changed; This is achieved by configuring the flow rate of the liquefied gas to be adjusted only by adjusting the gap between the two.

Hereinafter, the details of the present invention will be specifically explained with reference to the drawings.

The drawing is an explanatory view showing one embodiment of the disposable gas lighter according to the present invention.

In the figure, 1 is the main body case, 2 is the nozzle, 2a is the gas outlet, 2b is the gas introduction path, 3 is the nozzle case, 4 is the burner unit, 4a is the gas flow path, 5 is the rubber valve, and 6 is the gas flow rate adjustment washer. , 6a is a tapered portion 6 formed on the gas flow rate adjusting washer 6 so as to fit into the gas flow path 4a of the burner unit 4.
b, 6b are gas flow paths formed in the gas flow rate adjustment washer 6, 7 is a microporous membrane, 8 is a microporous membrane fixing member, 9 is a stator, 10 is a suction core, 11 and 12 are O-rings, 13 is a spring.

The nozzle 2 is housed in a nozzle case 3 via a burner unit 4 made of metal, and can be moved up and down within a certain range within the nozzle case 3, and can be moved up and down within a certain range. It is airtightly inserted between O-rings 11 and 12, and is configured to be pulled up by a lever (not shown) and pulled down by a spring 13.

The rubber valve 5 is made of a soft material such as oil-resistant rubber, is attached to the lower end of the nozzle 2, and opens and closes the gas flow path as the nozzle 2 moves up and down.

The nozzle 2 is slidably housed in the burner unit 4, and a tapered gas flow path 4a is formed in the burner unit 4. A gas flow rate adjusting washer 6 made of metal is installed in the tapered gas flow path 4a. The tapered portion 6a is configured to fit therein. Also,
The gas flow rate adjusting washer 6 includes gas flow paths 6b, 6b.
is formed, and the microporous membrane 7 is fixed by a microporous membrane fixing member 8 and a stator 9.

The microporous membrane fixing member 8 and the stator 9 are placed between the microporous membrane 7 and the wick 10 without directly contacting the wick 10.
By interposing this, the maximum flame length is regulated, safety is increased, and the gas flow rate can be easily adjusted.

As the microporous membrane 7, a microporous film made of polypropylene, a laminated film of a porous nonwoven fabric and a thin film of molecular sieve, or a laminated film of a urethane foam thin film, a porous nonwoven fabric, and a thin film of molecular sieve, etc. are used. It is recommended that the thickness be approximately 0.1mm.

When the nozzle 2 is pulled upward by a lever (not shown), the liquefied gas enters the space formed by the nozzle 2 and the burner unit 4, passes through the gas introduction path 2b of the nozzle 2, and The gas enters the gas outlet path 2a and is further ejected upward at a high speed.

The liquefied gas sucked up by the wick 10 passes between the microporous membrane fixing member 8 that fixes the microporous membrane 7 and the stator 9, and the flow rate is reduced by the microporous membrane 7. is limited to a predetermined safe amount, passes through the gas flow paths 6b, 6b of the gas flow rate adjustment washer 6, and further fits into the tapered gas flow path 4a of the burner unit 4. The gas passes through the gap with the part 6a, and is then introduced from the gas introduction path 2b of the nozzle 2 into the gas outlet path 2a.

To adjust the length of the flame, loosen the nozzle case 3 using a flame adjustment lever (not shown), and adjust the fitting surface between the gas flow path 4a of the burner unit 4 and the tapered portion 6a of the gas flow rate adjustment washer 6 that fits therein. By increasing the gap, the flow rate of liquefied gas increases and the flame length increases.

On the other hand, when reducing the flame length, the nozzle case 3 is tightened using a flame adjustment lever (not shown) so that the fitting surface between the gas flow path 4a of the burner unit 4 and the tapered portion 6a of the gas flow rate adjustment washer 6 that fits therein is tightened. All you have to do is make the gap smaller.

Since the thin film of the microporous membrane 7 such as Molecular Sieve has a pore size of approximately 0.1 to 1μ x 0.01 to 0.1μ, if a fuel based on n-butane or a fuel based on isobutane is used, the amount of liquefied gas vaporized will be reduced. is allowed to pass through, without allowing the liquid to pass through. Furthermore, appropriate flow rate adjustment is performed by the gap between the tapered gas flow path 4a of the burner unit 4 and the tapered portion 6a of the gas flow rate adjustment washer 6 that fits therein. Therefore, the flame can be adjusted accurately over a long period of time, and a stable flame can be obtained.

Since the present invention is constructed as described above, the present invention provides a highly safe disposable gas lighter that can reliably limit the gas flow path within a safe limit and provide a constant flame at a low cost. It can be provided to

Note that the present invention is not limited to the embodiments described above. That is, for example, in this example, a microporous membrane fixing member and a stator were used to fix the microporous membrane, and the liquefied gas was passed between them. The above-mentioned stator may be integrally formed with an insertion hole provided in the center thereof through which the liquefied gas passes. In addition, the shape of the gas flow path formed in the burner unit, the shape of the gas flow rate adjusting washer having a tapered portion formed to fit into the gas flow path of the burner unit, the shape of the nozzle, etc. are within the scope of the present invention. The design can be freely changed within the scope, and the present invention encompasses all of them.

[Brief explanation of drawings]

The drawing is an explanatory view showing one embodiment of the disposable gas lighter according to the present invention. DESCRIPTION OF SYMBOLS 1... Main body case, 2... Nozzle, 2a... Gas outlet path, 2b... Gas introduction path, 3... Nozzle case, 4... Burner unit, 4a, 6b... Gas flow path, 5... Rubber Valve, 6...Gas flow rate adjustment washer, 6a...Tapered portion, 7...Microporous membrane, 8...
Microporous membrane fixing member, 9... Stator, 10... Suction core, 11, 12... O-ring, 13... Spring.

Claims (1)

[Scope of Claims] 1. A nozzle 2 that can vaporize the liquefied gas, and at least a bottom portion of the nozzle are slidably housed in a main body case 1 that is equipped with a liquefied gas tank that accommodates the liquefied gas. A burner unit 4 in which a gas flow path is formed, a nozzle adjustment screw for adjusting the amount of liquefied gas ejected from the nozzle, and an intermediate case attached thereto, and a lever for raising and lowering the nozzle on the intermediate case to release the liquefied gas. In a gas lighter comprising: an adjustment knob for controlling the amount of liquefied gas discharged from the nozzle by rotating the nozzle adjustment screw; an ignition device and a windshield; A gas flow rate adjustment washer 6 having a tapered end and a tapered portion that fits into the tapered gas flow path; the gas flow rate adjustment washer 6 and the suction wick 1;
The burner unit 4 has a microporous membrane 7, a microporous membrane fixing member 8, and a stator 9 which are sequentially provided between the burner unit 4 and the
The above-mentioned gas lighter is characterized in that the flow rate of the liquefied gas is adjusted by changing the distance between the tapered gas flow path 4a and the fitted tapered shape 6a of the gas flow rate adjustment washer. 2. The gas lighter according to claim 1, wherein the burner unit 4 and the gas flow rate adjusting washer 6 are made of metal. 3. The gas lighter according to claim 1 or 2, wherein the microporous membrane 7 is a microporous film made of polypropylene. 4. The gas lighter according to claim 1 or 2, wherein the microporous membrane 7 is a laminated film of a porous nonwoven fabric and a thin film of molecular sieve. 5. The gas lighter according to claim 1 or 2, wherein the microporous membrane 7 is formed by laminating a urethane foam thin film, a porous nonwoven fabric, and a molecular sieve thin film. 6. The gas lighter according to claim 1, wherein the microporous membrane 7 has a thickness of about 0.1 mm.