JPH0443715Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a high-pressure discharge ignition type gas lighter, and is an improvement that is particularly effective for gas lighters that open and close the cap, ignite, and burn in sequence. It is related to.

[Summary of the invention] The gas ejection passage of the gas lighter is configured by a nozzle on the fuel gas tank side, a mixing tube that mixes air with the gas ejected from the nozzle, and a combustion tube that ignites and burns the mixed gas with high-pressure discharge. The nozzle on the tank side is fitted into the mixing pipe so as to be vertically movable.

[Prior Art] The present inventor previously proposed a new gas lighter in Japanese Patent Application No. 61-235997.

In the gas lighter of the above-mentioned earlier application, a mixing pipe is connected to the combustion cylinder supported on the lighter body side, a fuel tank side nozzle (with a valve) is connected to the mixing pipe via a flexible tube, and the cap is opened. In conjunction with the operation, the tank-side nozzle is lifted to open the valve, and the fuel gas in the tank is jetted out through the tube into the mixing pipe.At this time, the negative pressure generated by the gas jetting causes outside air to be sucked in and mixed. death,
The structure is such that the mixed gas is ignited within the combustion cylinder by high-pressure discharge.

[Problem to be solved by the invention] In the configuration of the gas ejection passage described above, the connecting tube curves when the nozzle is lifted up and returns to its original state when it is lowered, but its bending and stretching action is achieved by using a lighter. Since this happens frequently, there is a risk of it coming off or breaking the nozzle or mixing tube, making it unreliable.

[Purpose of the invention] The present invention was made in order to eliminate the structural defects of the gas ejection passage, and it is possible to lift the fuel tank side nozzle and open the gas ejection passage without using a connecting tube. The main objective is to provide a gas lighter that can be configured.

[Means for Solving the Problems] The present invention provides a gas lighter which has a gas ejection passage extending from a fuel gas tank side nozzle to a combustion tube and which ignites and burns within the combustion tube. A mixing pipe is connected to the mixing pipe that sucks in outside air using the negative pressure generated by the gas ejection, one end of the burner nozzle is fitted into the mixing pipe so that it can move up and down, and a fuel tank side nozzle is connected to the other end of the burner nozzle. The above-mentioned problems are solved by a structure in which the two are sealed and connected with a gasket.

[Function] In the gas lighter configured as described above, when the fuel tank side nozzle is lifted in conjunction with the opening/closing mechanism of the cap, the burner nozzle connected thereto slides upward in the mixing pipe, and gas is ejected. The walkway will remain intact.

[Example] Hereinafter, the present invention will be specifically described based on an example shown in the drawings.

In FIGS. 1 to 7, 1 is a gas lighter case, 2 is a tank, 3 is a frame provided at the opening of the case, and 4 is a cap.

A gas ejection passage is provided from the upper part of the tank 2 to the frame body 3. That is, 5 is a tank side nozzle, and when this is lifted, a valve (not shown) inside the tank opens, and fuel gas whose ejection amount is adjusted in advance is supplied to the nozzle 5.

The tank side nozzle 5 is connected to the burner nozzle A. 6 is an inner cylinder forming a burner nozzle, 7 is an outer cylinder press-fitted therein, and the tank side nozzle 5 is loosely fitted into the inner cylinder 6 and connected in an airtight state by an O-ring 8. ing. 9
10 is a sintered metal filter material having fine permeable holes provided in the inner cylinder 6; 10 is a seat ring for supporting the filter material;
Reference numeral 11 denotes a gasket, and a nozzle plate 12 having a nozzle hole 12a is provided between the outer side of the upper end of the inner cylinder 6 and the inner side of the upper end of the outer cylinder 7, and a side leakage sealing gasket 12b is loaded therein.

The burner nozzle A has an upper end portion of its outer cylinder 7 slidably fitted into the mixing pipe 13 in a loosely fitted state. The mixing tube 13 is formed with an inlet portion 13a in the form of a cut groove. 14 is a diffuser provided at the upper end of the mixing tube. 15 is a combustion tube connected to the mixing tube so as to surround the diffuser, and 16 is a high-pressure discharge electrode protruding inside the combustion tube.

The frame body 3 includes a gripping portion 3a that holds and supports the combustion tube 15, an enclosing wall portion 3b projecting backward from the gripping portion 3a in a brim shape, and a center portion of the enclosing wall portion 3b following the gripping portion 3a. A partition wall 3d extends in a roof shape so as to leave an air intake space 3c communicating with the interior at the rear of the enclosing wall 3b, and a partition wall 3d passes through this partition wall 3d to communicate with the space 3c. a plurality of air intake openings 3e, and two support plates 3f projecting downward from the lower edge of the enclosure wall 3b.
The joint edges 3g and 4a where the surrounding wall portion 3b and the cap 4 match are formed by the combustion cylinder gripping portion 3.
It is formed in a downward arc shape from a.

The gripping part 3a has a ring 1 that holds a metal recognition net 17 that becomes red hot with flame on the upper part of the combustion tube 15.
8 is inserted.

The cap 4 is shaped to cover the entire frame 3, and has two leg plates 4 approximately in the center thereof.
b, 4b protrude downward, and each leg plate 4b has a
A hooking piece 4c is formed at the lower end, and a pressing piece 4d protruding rearward is formed at the midway point.

That is, the cap-side leg plate 4 is passed through the space 3c between the enclosure wall 3b and the partition wall 3d of the frame 3.
b, 4b and support plates 3f, 3f on the side of the frame 3 are pivotally supported on the upper end of the tank 2 by a pin 19, and the cap 4 can be rotated to freely open and close using the pin 19 as a fulcrum. The hanging piece 4c is engaged with a hanging fitting 20 for lifting the nozzle 5 on the tank 2 side,
The pressing piece 4d is engaged with a power generation operator 21 protruding from the upper end of the tank 2.

The tank 2 housed in the case 1 is adjustably attached to the case 1 at its bottom. That is, there is a vacant space 2 in the receiver 2a that is integrated with the tank 2.
b, and a through hole 2c that opens the empty chamber 2b to the outside.A screw tube 22 having a collar 21 is attached thereto so as not to rotate, and a boss portion 2d forming the through hole 2c and the above-mentioned An elastic packing material 23 is loaded between the flange 21 and the screw 24 is screwed into the threaded tube 22 from outside the case 1.

To ignite the gas lighter with the above configuration, the third
Rotate the cap 4 to open it as shown in the figure.

By this rotating operation of the cap 4, the hanging fitting 20 engaged with the hook piece 4c of the leg plate 4b is lifted, the nozzle 5 on the gas tank side is pushed up, and the valve on the tank side (not shown) is opened. When the fuel gas flows into the inner cylinder 6, passes through the filter 9, and is ejected into the mixing pipe 13 through the nozzle 12a of the nozzle plate 12, the flow rate is increased by the valve, and the negative pressure generated by the high flow rate increases the flow rate. Then, external air is sucked into the mixing tube from the intake part 13a,
mixed with gas.

The mixed gas is further decelerated and diffused by the diffuser 14 and reaches the combustion tube 15 . On the other hand, when rotating the cap 4, the pressing piece 4d of the leg plate 4b
Since the power generation control element 21 is pushed down and high-pressure discharge is performed via the electrode 16, the
The mixed gas is ignited, and complete combustion of the mixed gas takes place. The gas that completely burns inside the combustion cylinder is a pale blue flame, but the recognition network 17 is heated by the flame,
It glows red hot, so you can confirm that the gas is burning.

Therefore, when the tank side nozzle 5 is lifted, the burner nozzle A slides upward inside the mixing tube 13, so that the lifting stroke of the tank side nozzle 5 is
Since it moves up and down only internally, the gas ejection passage is maintained as it is. Furthermore, this configuration of the gas ejection passage has the following advantages.

(a) If the nozzle plate 12 is held between the inner cylinder 6 and the outer cylinder 7, it can be set horizontally at the center position. If the nozzle plate 12 is distorted into an uneven shape or the nozzle holes 12a are set eccentrically, gas will not be ejected vertically upward from the nozzle holes, causing incomplete combustion.

(b) By using the packing 11, it is possible to prevent dust from passing through the gap between the outer periphery of the filter material 9 and the inner periphery of the inner cylinder 6.

(c) By using a filter material 9 having permeation holes much finer than the nozzle holes 12a of the nozzle plate 12, the nozzle holes 12a
It is possible to accurately prevent clogging of a.

As the filter material, fine mesh wire mesh or other porous materials may be arbitrarily selected and used as long as the above conditions are satisfied.

(d) If a space is left between the filter material 9 and the nozzle plate 12, the nozzle hole 12
Gas can be ejected vertically from a without damaging the ejection force.

If the void space is not provided, the filter material may come into close contact with the inside of the nozzle hole, making it impossible to eject appropriate gas.

(e) The seat ring 10 is the filter material 9 and the packing 1
1 in the normal position.

(F) According to the structure in which the tank side nozzle 5 is fitted into the O-ring 8 of the lower end opening of the burner nozzle A in an airtight manner so as to be able to move up and down, and the nozzle 5 is loosely fitted into the inner cylinder 6, the burner nozzle A and tank nozzle 5
A reliable connection can be obtained without gas leaking between the outer cylinder 7 and the mixing tube 13, and even if there is some center runout in the mutual fitting when the outer cylinder 7 is fitted into the mixing tube 13, the loose fitting will not occur. Due to the gap and the elasticity of the O-ring 8, gas will not leak even if the upper end of the outer cylinder 7 is inserted into the inner periphery of the mixing tube 13 with some oscillation.

Further, even if the tank side nozzle 5 and the burner nozzle A move up and down together, since the outer cylinder 7 is loosely fitted into the mixing pipe 13, smooth up and down movement is possible.

(g) Since the tank side nozzle 5, burner nozzle A, and mixing pipe 13 are not directly connected, heat during combustion is difficult to be transmitted to the tank 2, and assembly of each part is extremely advantageous.

Next, looking at the exhaust gas after combustion discharged from the mouth of the combustion tube 15, normally the exhaust gas ejected outside from the combustion tube diffuses and rises while mixing with the surrounding outside air, but the combustion tube Since the exhaust gas starts to diffuse near the cylindrical opening 15 (in this case, the opening surface of the annulus 18), there is a risk that it will flow back into the intake section 13a through the air intake cavity 3c and the opening 3e.

However, according to the above configuration, even if the exhaust gas near the opening of the annulus 18 at the top of the combustion tube 15 is diffused in the lateral direction, the diffused exhaust gas is spread over the top surface of the partition wall 3d of the frame body 3. It is possible to prevent exhaust gas from flowing into the air intake cavity 3c and opening 3e on the side surface of the partition wall 3d.

Also, the joint edges 3g, 4 between the frame body 3 and the cap 4
a is provided at the rear of the grip part 3a of the combustion tube 15,
In addition, since the air intake cavity 3c and the joint edge portion for opening and closing the opening 3e are positioned sufficiently lowered, the gas discharged from the combustion tube will not re-inflow. Note that there is no need to expose the air intake hole etc. that communicates with the inside on the outside of the case or cap, and if the cap is closed, the joint edge 3
g and 4a match, and the air intake cavity 3
c. Since the opening 3e can be completely shielded, dust and the like will not enter the interior.

Therefore, according to the above configuration, when using a gas lighter, when the cap is opened, the air intake space 3c and the opening 3e can be sufficiently exposed, and the exhaust gas from the combustion tube 15 can be prevented from circulating. ,
Even if the opening angle of the cap is small, normal ignition can be achieved, so even if a system is adopted in which the gas injection and ignition operations are performed in conjunction with the opening and closing of the cap, smooth combustion can be achieved. can.

In addition, as shown in the above embodiment, the partition wall portion 3d
It is advantageous to have the structure slightly rising from the upper surface of the combustion cylinder gripping part 3a, since it serves to deflect the diffused exhaust gas upward, but it may also be formed at the same height as the gripping part 3a.

[Effects of the invention] As described above, according to the invention, the fuel tank side nozzle is not directly connected to the mixer or combustion cylinder, so there is no possibility of disconnection or damage of the connecting tube as in the conventional case. To obtain a gas lighter which is free from accidents, in which heat from the combustion tube is hardly transmitted to the tank, and in which each part can be easily assembled and replaced.

[Brief explanation of the drawing]

Figure 1 is a side view showing a part of a gas lighter showing an embodiment of the present invention in cross section, Figure 2 is a side view of the lighter body with the case removed, and Figure 3 is the case with the cap open. 4 is a perspective view of the frame and the main parts of the burner, FIG. 5 is a plan view of FIG. 4, and FIG. 6 is an enlarged sectional view of the frame and the structural part of the gas ejection passage. FIG. 7 is a perspective view of the cap. 1... Case, 2... Tank, 3... Frame, 4
... Cap, A ... Burner nozzle, 5 ... Tank side nozzle, 13 ... Mixing pipe, 13a ... Intake part, 14 ... Diffuser, 15 ... Combustion cylinder, 16 ...
Electrode, 3a...Gripping part, 3b...Enclosing wall part, 3c
...air intake cavity, 3d...partition wall, 3
e...Air intake opening, 3g...Joining edge, 4
a... Cap side joint edge, 17... Recognition network, 18
... Tamaki.

Claims (1)

[Scope of utility model registration request] In a gas lighter that has a gas jet passage leading from a fuel tank side nozzle to a combustion tube, and which ignites and burns within the combustion tube, the combustion tube supported on the lighter body side is exposed to the outside by the negative pressure generated by the gas jet. A mixing pipe for sucking air is connected, one end of the burner nozzle is fitted into the mixing pipe so that it can move up and down, and the fuel tank side nozzle is sealed and connected to the other end of the burner nozzle with a gasket. Features a gas lighter.