JPH0472127B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a gas lighter for smoking,
In particular, the present invention relates to an improvement in a gas lighter that ignites and burns fuel gas within a combustion cylinder.

[Summary of the invention]

The present invention relates to a gas lighter that ignites and burns fuel gas in a combustion tube, in which a certain amount of fuel gas is taken out from a fuel tank in connection with the ignition operation and combusted in the combustion tube. This prevents the risk of parts becoming overheated and saves fuel.

[Conventional technology]

The present inventor previously filed Japanese Patent Application No. 61-235997 (Japanese Unexamined Patent Publication No.
No. 63-91431) proposed a new gas lighter.

In the gas lighter of the above-mentioned prior application, a mixing tube is connected to the combustion tube supported on the lighter body side, and this mixing tube is connected to a nozzle (with a valve) on the fuel tank side via a tube. In conjunction with the cap opening operation, the valve is opened by pulling up the nozzle on the fuel tank side, and the fuel gas in the tank is jetted out into the mixing pipe, and at this time, the negative pressure generated by the gas jetting causes outside air to be sucked in. The mixed gas is ignited and combusted in the combustion cylinder by high-pressure discharge sparks.

[Problem to be solved by the invention]

The features of the gas lighter with the above configuration are that it can be mixed with air in advance to create a mixed gas suitable for ignition, and that mixed gas is combusted in the combustion cylinder, so combustion and ignition are not affected by wind, etc. It is possible to do this.

However, since the operation part of the ignition mechanism is linked to the valve opening/closing mechanism of the fuel tank, if the ignition operation is performed and the combustion state is continued for a long time, the combustion mechanism including the combustion tube may can easily become overheated, and there is also a risk that the entire lighter will become overheated. This phenomenon occurs in the case of most known lighters as well, where if the lighter is continuously burned for a certain period of time or more, it may reach an overheating state, although there is a slight time difference depending on each structure.

[Purpose of the invention]

The present invention limits the amount of gas ejected from the fuel tank to the combustion tube when operating the ignition mechanism, and keeps the combustion time constant during use to prevent continuous combustion for a long time. An object of the present invention is to provide a highly safe gas lighter which prevents the danger of overheating the combustion mechanism parts including the combustion mechanism to high temperatures. Furthermore, when this structure is applied to a conventionally known lighter that burns with a normal flame, a similarly safe lighter can be provided.

[Means to solve the problem]

The present invention has been made to achieve the above object, and provides a gas lighter which has a gas jetting passage leading from a fuel tank to a combustion cylinder, and which ignites and burns within the combustion cylinder. A secondary gas storage section is provided, and in connection with the operation of the ignition mechanism, the gas inflow path from the fuel tank to the secondary gas storage section is closed, and at the same time, the gas inflow path from the secondary gas storage section to the combustion tube is closed. The above-mentioned problems are solved by providing a control mechanism for opening the ejection passage.

[Effect]

In the gas lighter with the above configuration, when the ignition mechanism is operated, gas is stored in the secondary storage part at the same pressure as the main fuel tank, and only a certain amount of gas is sent to the combustion tube, and the air is Since the fuel is thoroughly mixed with the gas and then combusted, the fuel volume increases, which naturally provides a sufficient combustion time for use.When igniting combustion, if there is no gas in the secondary storage section, the gas supply will naturally stop and the fire will be extinguished. Therefore, even if you continue to operate the ignition mechanism, the combustion mechanism parts including the combustion tube and the lighter body will not be overheated to high temperatures.

〔Example〕

Hereinafter, the present invention will be specifically described based on embodiments shown in the drawings.

In Figures 1 to 4, 1 is an exterior case of the gas lighter, 2 is a fuel tank housed in the exterior case 1, 3 is a frame provided on the upper opening side of the exterior case, and 4 is a cap. . A pair of support plates 5 on the left and right are provided approximately at the center of the lower side of the frame 3 (see Figures 2 to 4; however, only one side is shown because the display positions overlap in both cases). and,
The upper part of the fuel tank 2 is the fixed shaft hole 5a of the support plate 5.
It is pivoted and connected. In addition, a red-hot wire mesh 15 is provided at the front opening of the frame 3 to confirm combustion.
The combustion tube 6 is fixed vertically inside the wire mesh,
A large-diameter portion 7b of a mixing tube 7, to which a diffuser 13 is connected by protruding from the center of the upper surface, is connected to the inside of the lower end of the combustion tube, and the lower end of the mixing tube 7 has an intake groove for sucking air. Several grooves 7a are provided as appropriate.

8 is an upper outer cylinder, and 8a is a lower outer cylinder, each of which is press-fitted into the inner cylinder 9 from the upper end side and the lower end side. The flat ring packings 8b and 8c are for closing the outer peripheral gap of the filter 11 inside the inner cylinder 9.

The nozzle plate 12 provided at the upper end of the inner cylinder 9 is provided with a small hole 12a in the center for rapidly ejecting gas, and a hole 12a is provided at the center of the nozzle plate 12 for rapidly ejecting gas. I have kept it. The O-ring gasket 8d is for closing the outer peripheral gap of the nozzle plate 12, and the lower end opening 8e of the lower outer cylinder 8a is connected to a gas ejection nozzle pipe 10 provided in the fuel tank 2.
An O-ring packing 8f provided between the lower end of the inner cylinder 9 and the inner bottom contour of the lower outer cylinder 8a is used to prevent gas leakage. Further, the tip of the upper outer cylinder 8 is inserted into the inside of the lower end of the mixing tube 7, and connected with a gap so as to be able to move up and down.

Gas ejected from the through hole 10b of the ejection nozzle pipe 10 in connection with the ignition operation described later flows into the inner cylinder 9, passes through the filtration filter 11, and is ejected from the pore 12a of the nozzle plate 12.
The flow rate is increased to cause a jet to flow into the mixing pipe 7, and the negative pressure generated around the jet gas causes external air to be sucked into the mixing pipe 7 from the intake groove 7a, promoting vaporization and mixing, and flowing into the diffuser 13. The discharge electrode 1 is connected to the mixed gas whose flow rate is controlled to allow continuous combustion within the combustion tube 6 by causing division and diffusion.
It is designed to ignite and burn with a high-pressure discharge from the tip of No. 4.

5 and 6 are a vertical sectional view and a longitudinal sectional perspective view of the gas ejection control mechanism provided inside the fuel tank 2, and FIG. 7 is an enlarged sectional view of the main part of FIG. This shows the closed state of the gas jet valve when not in use, and FIG. 8 is a longitudinal cross-sectional perspective view showing the operating state of the gas jet valve when in use, with the ignition operation performed.

As shown in FIG. 5, FIG. 6, and FIG. 8, the upper part of the holding cylinder 16a is connected to the upper mounting hole 28a of the fuel tank 2.
Insert the holding cylinder lower part 16b into the mounting hole 28b.
is inserted, and a gas ejection control mechanism to be described later is built in and screwed together with a screw portion 26, and O-ring packings 27a and 27b are used to prevent gas leakage.

The gas ejection nozzle pipe 10 is connected to the upper part of the holding cylinder 16a.
The upper end portion protrudes from the upper hole 29, and the thin tube portion 10a thereof is inserted from the lower end of the lower outer cylinder 8a and connected to the inner cylinder 9, as shown in FIG.

In addition, a gap is provided in the upper hole 29 of the holding cylinder upper part 16a so that the ejection nozzle pipe 10 can move up and down, and an O-ring packing 30 is used to prevent gas leakage. An inner diameter 29a is provided, and a large inner diameter 29b is provided below the large inner diameter 29b, which is threadedly connected to the lower part 16b of the holding cylinder with a threaded portion 26 provided at the lower end. The spring 22 is engaged with the flange 10c to exert downward elasticity on the jet nozzle pipe 10, and the outer diameter of the flange 10c is the same as the inner diameter 29a.
It is provided with a slightly smaller diameter, and a cylindrical gasket 19 for the on-off valve is provided below it between it and the large inner diameter 29b.
It is mounted with a slight gap, and a gap is provided between the enlarged cylinder 10d and the large inner diameter 29b so that it can move up and down. The small diameter valve cylinder 21b, which is the upper end of the valve cylinder 21, is press-fitted to the lower end of the through hole 10b, and the horizontal hole 21a is for sucking gas into the through hole 10b. The body nail-shaped gasket 20 is used to open and close a gas ejection nozzle hole 16c, which will be described later.

The part of the lower part of the holding cylinder 16b above the threaded part 26 is a pressure regulating valve cylinder part 16d with a slightly smaller diameter, and a partition wall 16e which is the bottom surface of the cylinder opened upward.
A nozzle hole 16c for ejecting gas is provided at the center of the nozzle hole 16c, which is inserted into the annular space between the enlarged cylinder 10d and the valve cylinder 21. The O-ring packing 31 is for preventing gas leakage, and the horizontal hole 16f is a hole for introducing gas into the nozzle hole 16c.

Further, the inner diameter of the lower side of the partition wall 16e is enlarged in two stages to open to the lower end of the lower part of the holding cylinder 16b, and a pressure regulating member 24 is inserted into the upper limit of the lower end of the holding cylinder lower part 16b. The adjustment cylinder 2 has a built-in pressure adjustment rod 23b and a gas injection valve (not shown).
3 is inserted, and when the operator 23a is rotated, the screw portion 32 moves up and down to adjust the compression of the pressure regulating material 24 and adjust the amount of gas ejected from the nozzle hole 16c. The spring 33 is for pressing the adjusting cylinder 23 downward to adjust the threaded gear of the threaded part 32, and the O-ring packing 34 is for preventing side leakage of gas.
The injection inner hole 16g injects gas to be filled into the fuel tank 2 from an injection valve (not shown) provided inside the adjustment cylinder 23 into the tank 2 through an injection outer hole 23c provided in the lower part 16b of the holding cylinder. This is to make it happen.

Inside the upper part of the connection between the upper part 16a of the holding cylinder and the lower part 16b of the holding cylinder, there is an annular cavity having a required volume for fractionating and storing the combustion gas that communicates with the horizontal hole 16f. It remains as a storage section 25.

The cap 4 shown in FIGS. 1 to 3 has a shape that covers the upper surface of the frame 3, and has a pair of left and right leg plates 4a projecting downward from inside the center.Since the display positions overlap, only one side is provided. is disclosed. Its lower end is supported by a pin along with the shaft hole 5a of the support plate 5, and the gap 4
can be opened and closed using a pin in the shaft hole 5a as a pivot point. The leg plate 4a is provided with a pair of hook pieces 4b at its lower end and a pair of pressing pieces 4c at its mid-rear side, and the hook pieces 4b serve as hanging fittings for lifting the nozzle pipe 10 on the tank side. 35 is engaged with the pulling part 35b, and the engaging part 35a
is a structure for pulling up the ejection nozzle pipe 10. Further, the pressing piece 4c is engaged with the top surface of a power generation operator 36 that protrudes from the rear upper surface of the upper end surface of the tank with an elastic force.

Next, the ignition operation and operation of the lighter will be explained. When not in use before ignition operation, as shown in FIGS. 5, 6, and 7, the nozzle hole 16c for ejecting gas is
is closed by a nail-shaped gasket 20 provided at the lower end of the nozzle pipe 10.

That is, this shows that the gas in the fuel tank 2 flows in the order of the arrows in FIG.
7, and further into the holding cylinder upper part 16a and the enlarged cylinder 1.
It flows into the gas storage chamber 25 through the gap with 0d and remains there. Further, a part of the gas passes through the horizontal hole 16f, passes through the filter 24, and reaches the gas ejection passageway that reaches the nozzle hole 16c, and the end thereof is blocked by the gasket 20. For this purpose, an appropriate space is provided so that only a predetermined required amount of gas to be combusted during use can be stored mainly in the annular cavity 17 and the gas storage chamber 25. and fuel tank 2
Since the gas can be stored under the same pressure conditions as inside the liquefied gas, it can be stored in an extremely small amount of liquefied gas that is suitable for one-time use.

In addition, when lighting a gas lighter, as shown in FIG. 3, when the cap 4 is rotated and opened, the hanging metal fitting 35 engaged with the hook piece 4b of the leg plate 4a is released. As the nozzle pipe 10 on the fuel tank side is pulled up through the nozzle pipe 10, the gas ejection control mechanism becomes in a state where the nozzle pipe 10 is pulled up as shown in FIG. That is, the nozzle pipe 10
When the gasket 19 is pulled up, the gasket 19 supported by the gasket 19 is lifted up from the annular stepped portion 17a at the lower end of the middle inner diameter 29a.
The gas suction port 18 comes into pressure contact with the shoulder portion protruding inside the gas suction port 18, thereby blocking the inflow of gas from inside the fuel tank 2 from the suction port 18 to the annular space 17. At the same time, the gasket 20 held on the valve cylinder 21 moves upward from the position blocking the nozzle hole 16c, so that gas starts to be ejected from the nozzle hole 16c. The gas in the storage chamber 25 flows in through the horizontal hole 16f, the amount of gas ejected is adjusted by the pressure regulating material 24, and is ejected from the nozzle hole 16c, passes through the through hole 10b from the horizontal hole 21a, and enters the inner cylinder 9 described above. It is ejected into the combustion cylinder 6 through the air mixing pipe 7. Further, as the cap 4 is rotated, the leg piece 4a is pushed down by the pressing piece 4c to lower the high voltage power generation operator 36, so that the discharge electrode 14 generates a high pressure discharge inside the combustion tube, and the combustion tube 6, the mixed vaporized gas is ignited and combustion begins.

Therefore, while the cap 4 is rotated to open, the gas inflow from the gas inlet side suction port 18 is closed by the gasket 19.
Since the gas ejected from the nozzle hole 16c is limited to a fixed supply amount, the ejection stops and the fire is extinguished when the fixed amount of gas mainly stored in the gas storage section 25 is exhausted. After that, when the cap 4 is rotated to its original position and closed, the gasket 19 reopens the gas inlet side suction port 18, and the nail-shaped gasket 20 comes into pressure contact with the nozzle hole 16c to cut off the gas ejection. The gas flowing in from the suction port 18 also flows into and remains in each gap between the gas storage chamber 25, the annular space 17, and the upper end of the nozzle hole 16c. Therefore, by simply opening and closing the cap 4 repeatedly, gas can be stored repeatedly for each use.
Even if you try to continue combustion for a long time by rotating the fuel tank 2 in the open state, only a certain amount of fuel gas will be ejected from the fuel tank 2 to the combustion tube, which limits the combustion time. There is no risk of overheating of the combustion mechanism.

Furthermore, according to the configuration in which a control mechanism for separately storing and ejecting a certain amount of gas is incorporated inside the fuel tank 2, the gas stored in the gas storage chamber 25 is
Since the liquefied gas is maintained at the same pressure as the gas inside the fuel tank 2, it is possible to obtain an extremely large volume of vaporized gas that is ejected from the nozzle hole 16c, mixed with air, and combusted.
The control mechanism also avoids increasing the size of the gas lighter.

It should be noted that the above-described certain amount of gas expands significantly by being ejected at high pressure, so it is sufficient for smoking purposes, and the annular space 25, which is a gas storage chamber,
In order to set the volume of the burner to an appropriate size, by securing a small amount of space, it is possible to maintain sufficient combustion time during use, and to prevent unnecessary long burning times. It is possible.

〔Effect of the invention〕

As described above, according to the present invention, when the ignition mechanism is operated, the fuel gas injected from the fuel tank into the combustion tube is limited to an appropriate constant amount each time it is used, so there is no limit to the combustion time. The danger of overheating the combustion mechanism part including the resulting combustion tube to high temperatures can be reliably prevented.

[Brief explanation of the drawing]

Fig. 1 is an exterior side view of a gas lighter showing an embodiment of the present invention, Fig. 2 is a side view exposing the inside of the lighter body with the outer case removed, and Fig. 3 is an open side view of the gas lighter shown in Fig. 2. 4 is an enlarged sectional view of the main parts of the gas injection mechanism and combustion cylinder, FIG. 5 is a vertical sectional view of the gas injection control mechanism in the fuel tank, and FIG. Fig. 7 is an enlarged sectional view of the main parts of the control mechanism in Fig. 5, and Fig. 8 shows the state when not in use, whereas Fig. 7 shows the state when not in use. It is a perspective longitudinal cross-sectional view of the control mechanism at the time. 1... Exterior case, 2... Fuel tank, 3... Frame,
4... Cap, 6... Combustion tube, 7... Mixing tube, 8... Upper outer cylinder, 8a... Lower outer cylinder, 8b, 8c... Flat ring packing, 8d, 8f... O-ring packing,
8e...Lower end port, 9...Inner cylinder, 10...Ejection nozzle pipe,
10a... Tip capillary, 10b... Through hole, 10c... Flange, 10d... Enlarged cylinder, 11... Filter, 12
... Nozzle plate, 12a... Pore, 13... Diffuser, 14
...discharge electrode, 15...wire mesh for glowing, 16a...upper part of the holding cylinder, 16b...lower part of the holding cylinder, 16c...nozzle hole,
16d...Pressure regulating valve cylinder part, 16e...Partition wall, 16f
...Horizontal hole, 16g...Injection inner hole, 18...Suction port, 19
...Packkin, 20...Nail-shaped packing, 21...Valve cylinder,
22...Spring, 23...Adjustment tube, 23a...Operator, 23b...Pressure adjustment rod, 23c...Injection outer hole, 24...
Pressure regulating material, 25... Gas storage chamber, 26... Screw part, 27
a, 27b...Oring packing, 28a...tank upper hole, 28b...tank bottom hole, 29...upper hole,
29a... Middle inner diameter, 29b... Lower inner diameter, 30... O-ring packing, 31... O-ring packing, 32
...Threaded portion, 33... Spring, 34... O-ring packing, 35... Hanging fitting, 36... Power generation operator.

Claims (1)

[Scope of Claims] 1. A gas lighter which has a gas jetting passage leading from a fuel tank to a combustion cylinder and which ignites and burns within the combustion cylinder, wherein a secondary gas storage part is provided in the middle of the gas jetting passage, and an ignition mechanism is provided. In connection with the operation, closing the gas inflow path from the fuel tank to the secondary storage part,
A gas lighter characterized in that it is equipped with a control mechanism that simultaneously opens an ejection path that leads gas stored in a secondary storage section to a combustion cylinder. 2. In a gas lighter that has a gas ejection passage leading from the fuel tank to the combustion cylinder and is ignited and burned within the combustion cylinder, there is a
A secondary gas storage part is formed in which gas from the fuel tank flows in and a certain amount is stored, a first valve body is provided on the gas inflow side to this gas storage part, and a second valve body is provided on the gas ejection side. In connection with the operation of the ignition mechanism, the first valve element closes the inflow path from the fuel tank to the secondary gas storage section, and at the same time, the second valve element closes the gas flow path. A gas lighter characterized by comprising a control mechanism that opens a gas ejection path from a secondary storage part to a combustion cylinder.