JPH08270945A - Fuel distributor for gas lighter - Google Patents

Abstract

PURPOSE: To facilitate mass production of a fuel distributor the size of which is limited by a method wherein a body having the outer combustion side, the inner combustion side, and a branch hole to communicate together the two members is formed in such a manner that injection moulding and die cast are practicable. CONSTITUTION: A connection pipe 2 on the inner combustion side is formed in a protrusion state on one side of the upper surface of a block-form body 1. A circular recessed part 3 on the outer combustion side the lower part of which is formed in a taper hole 33 through contraction and a recessed part 4 on the inner combustion side communicated with a connection pipe 2 are formed in a body alternately from the upper and lower surfaces of a body, and the recessed part 4 on the inner combustion side is communicated with the connection pipe 2. An opening 41 of the recessed part 4 on the inner combustion side has an inner edge partially overlapped with the wall part of the taper hole 33 and is formed in a connection port with a large bore in the wall part of which a branch hole 5 is formed. A valve member 6 for limiting a flow rate comprising a hollow shaft has an upper part, formed in a tubular shape, and a part lower than a screw part 62, formed in a valve body 64, and a valve body upper part in which an inflow part 65 is formed. The valve member is rotatably mounted in the recessed part 3 on the outer combustion side and an upper part forms a connection pipe 8 on the outer combustion side which is protruded from the upper surface of a body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention has a different combustion means.
The present invention relates to a fuel distributor for a gas lighter having two combustion parts.

[0002]

2. Description of the Related Art The combustion of a gas lighter using liquefied gas as fuel is performed by external combustion (hereinafter referred to as "external combustion") in which liquefied gas flowing out from a combustion nozzle is burned in the atmosphere and liquefied gas using negative pressure. There is internal combustion (hereinafter referred to as internal combustion) that mixes with air and burns in the combustion cylinder as a mixed gas.

The external combustion is to control the flow rate of the liquefied gas in the valve device, and then to ignite and burn the liquefied gas flowing out from the combustion nozzle by a discharge spark. Since a long red flame rises from the combustion nozzle, It is also said to be a burning combustion.

In the internal combustion, the liquefied gas flowing out from the valve device is jetted at a high speed from an orifice in a mixer having an air intake, and the negative pressure generated at that time takes in air to mix it with the liquefied gas. It is said that the mixed gas is diffused and ejected inside the combustion cylinder to be ignited and burned by the discharge spark, and a pale flame which is difficult to confirm in a bright place only occurs at the crater, and it is also called flameless combustion.

The gas lighter having two combustion parts, that is, the external combustion and the internal combustion, is provided with a fuel distributor for supplying the liquefied gas flowing out from the fuel tank in the lighter case through the valve device to each combustion part. , The flow rate of the liquefied gas flowing out to the external combustion side is limited in the distributor.

The conventional fuel distributor has two internal combustion side and external combustion side.
The two flow passages are connected by a branch passage in the main body, a valve nozzle connection port is provided on the internal combustion side, and a flow rate adjusting plate that prevents excessive outflow of liquefied gas is provided on the external combustion side. As the flow rate adjusting member, a metal plate having fine through holes of about 60 μ is used.

[0007]

Since such a fuel distributor is provided in a limited space between the combustion device of the gas lighter and the fuel tank, the width and height thereof are extremely less than 10 mm. It is small, and the flow passages and branch passages are also made thin. For this reason, the same precision as precision parts is required for the cutting process in the main body, which inevitably increases the manufacturing cost.

Further, it is difficult to form a branch passage in the center of the main body,
Since the main body is made of a single member, the connecting opening on the internal combustion side is formed wide, and the branch passage is formed obliquely from the bottom of the opening toward the external combustion side. In such a structure, the flow rate adjusting mechanism provided on the external combustion side becomes complicated, and the structure on the internal combustion side also becomes complicated, and a specific means is also required for connecting the internal combustion side and the combustion cylinder. Have.

An object of the present invention is that the external combustion side, the internal combustion side, and the branch hole communicating with both of them can be formed at the time of forming the main body without performing the cutting work. It is an object of the present invention to solve the problem and provide a fuel distributor having a new structure that can be mass-produced at a lower cost than before.

According to the present invention according to the above-mentioned object, a connecting pipe for the internal combustion side is formed on one side of the upper surface in a projecting manner, and a circular external combustion side recess having a tapered hole at the lower portion due to a diameter reduction is provided with the internal combustion side communicating with the connecting pipe. The recesses and the recesses are alternately provided inward from the upper and lower surfaces, the internal combustion side recesses communicate with the connecting pipe, and the inner edges of the openings of the internal combustion side recesses partially overlap the walls of the tapered holes. Then, a block-shaped main body formed in a large-diameter connection port forming a branch hole in the wall portion, a tubular upper portion, and a portion below the screw portion is formed in the valve body, and an inflow port is provided in the upper portion of the valve body. It consists of a valve member for restricting the flow rate by a hollow shaft, and this valve member is rotatably mounted in the recess on the external combustion side to insert the valve body into the tapered hole, and the upper part serves as a connecting pipe on the external combustion side. It is formed by projecting on the upper surface of the main body.

[0011]

[Operation] Inside the fuel distributor having the above structure, the liquefied gas flows into both the internal combustion side and the external combustion side through the branch holes. Further, since the flow rate on the internal combustion side is limited beforehand by the rotation of the valve member, even if a control plate having a fine orifice is provided in the mixing passage on the internal combustion side, the flow resistance due to the orifice causes the flow to the internal combustion side. The flow rate of the liquefied gas does not decrease remarkably and flows out to both combustion parts in a well-balanced manner.

Since the flow rate on the internal combustion side can be adjusted by adjusting the gap between the valve body and the wall surface of the tapered hole by the turning operation of the valve member, adjustment can be made for each lighter before installation, and it is possible to adjust by a fine hole. Clogging is less likely to occur than when controlled.

[0013]

1 is a block-shaped main body made of thermoplastic synthetic resin which can be molded by injection molding, and has a size of 6.5 mm in length, 6.8 mm in width, and 3.0 mm in width, and has a high surface. A connecting pipe 2 on the internal combustion side having a length of 3.0 mm and an outer diameter of about 1.5Φ is formed so as to protrude toward one side. Inside this body 1,
A circular external combustion side recess 3 opening on the upper surface of the main body and an internal combustion side recess 4 opening on the lower surface of the main body and communicating with the connecting pipe 2 are alternately recessed from the upper and lower surfaces.

The external combustion side recess 3 has an opening 31 on the upper surface of the main body.
Smaller than the diameter of the hole 32, and a tapered hole 33 formed by reducing the diameter of the lower portion of the hole 32. The internal combustion side recess 4 is connected to the opening 41 on the lower surface of the main body immediately below the connecting pipe 2 and the connection. And a recess 42 formed to the lower side of the tube 2.

The opening 41 of the internal combustion side recess 4 is formed as a large-diameter connecting port whose inner edge partially overlaps with the wall portion of the tapered hole 33, and by the superposition, a required branch hole is formed in the wall portion. 5 is formed.

Reference numeral 6 is a valve member for limiting the flow rate on the external combustion side. The valve member 6 has a tubular upper portion and integrally has a flange 61 on the side portion, and an O-ring 7 is provided between the flange 61 and the lower screw portion 62.
And the shaft end below the threaded portion 62 is formed in a frustoconical valve body 64 having a steeper surface than the taper hole 33, and an inlet port is formed in the upper portion of the valve body 64. 6
It consists of a hollow shaft provided with 5.

The valve member 6 is rotatably mounted in the external combustion side recess 3, whereby the valve body 64 is located in the tapered hole 33, and the tubular upper part serves as the external combustion side connection pipe 8. Located on the top of the main unit. The valve member 6 can be mounted only by inserting the valve body side into the external combustion side recess 3 and then rotating it. Since the main body 1 is made of synthetic resin, the screw portion 62 bites into the wall surface of the hole portion 32 by turning to form a thread groove, and the upper portion of the valve body 64 enters into contact with the wall surface of the tapered hole 33. Is.

Although the main body 1 of the above embodiment is made of synthetic resin, it may be made of metal as well. In this case, it is formed by die casting, and a screw with which the screw portion 62 of the valve member 6 is screwed is cut on the peripheral wall of the hole 32.

FIG. 4 shows a state in which the fuel distributor is attached to a gas lighter having two combustion parts. The gas lighter has a combustion device 12 in the upper part of a case 11 and a lower part thereof. It has a fuel tank 13 therein. Further, a space between the combustion device 12 and the fuel tank 13 is partitioned by a column 14, and a valve nozzle 15 is provided on the fuel tank on the combustion device 12 side so as to project. Reference numeral 16 is a piezoelectric device for ignition.

The combustion device 12 includes an internal combustion unit having a structure in which a gas mixer 19 is connected to a lower portion of a diffuser 18 for a mixed gas projecting from the bottom center of the combustion cylinder 17 and the outer periphery of the combustion cylinder 17. The air is composed of an external combustion portion formed by an outer cylinder body 21 inserted into the gas circulation space 20 and a discharge terminal 22 penetrating the combustion cylinder body. Although omitted in the drawing, air formed on the lower side wall of the mixing passage. A control plate having an orifice of about 60μ for ejecting the liquefied gas is internally provided near the mouth 23.

In the fuel distributor, a large-diameter connection port on the lower surface of the main body is fitted to the tip of the valve nozzle 15 having an O-ring 15a fitted around it, while the connection pipe 2 is provided on the upper surface of the main body. To the flexible internal combustion-side tube 24 made of synthetic resin fitted to the lower end of the gas mixer 19, and the synthetic resin fitted to the joint pipe 25 extending the connecting pipe 8 to the bottom of the outer cylinder 21. Connected to each of the flexible outer combustion side tubes 26, and is assembled in the case 11 together with the combustion device 12 and the fuel tank 13.

When assembling the fuel distributor,
By rotating the valve member 6, the gap between the valve body 64 and the wall surface of the tapered hole 33 is adjusted to limit the flow rate on the external combustion side, and the liquefied gas from the valve nozzle 15 is balanced in both combustion sections. Adjust to drain.

In a gas lighter equipped with such a fuel distributor, the rear end of the lid member 27 is pushed down by finger pressure and pivoted around the bearing 29 to open and close the piezoelectric device 16 and the valve nozzle 15. When 28 is pressed, the valve nozzle 15 is pushed up and the valve of the fuel tank 13 is opened. Due to this push-up, the fuel distributor also becomes the tube 2 described above.
Liquefied gas flows into the fuel distributor from the valve nozzle 15 while bending the valves 4 and 26 to some extent and ascending.

In the fuel distributor, the branch holes 5 allow the liquefied gas to flow into both the internal combustion side and the external combustion side. Further, since the flow rate on the internal combustion side is limited by the valve member 6 in advance, even if a control plate having a fine orifice is installed in the mixing passage on the internal combustion side, the flow resistance to the internal flow side causes the flow to the internal combustion side. The flow rate of the liquefied gas does not decrease remarkably, and it flows out to both combustion parts through the flexible tubes 24 and 26 in a balanced manner.

The combustion of the liquefied gas is preceded by the discharge on the internal combustion side, and the combustion is ignited on the external combustion side. The internal combustion is a complete combustion of the mixed gas in the combustion cylinder, and flames due to external combustion rise in the openings of the combustion cylinder 17.

According to the present invention, as described above, the inside of the main body of the fuel distributor is composed of the inner recess and the outer recess alternately recessed from the upper and lower surfaces. The manufacturing cost can be reduced because the main body can be easily molded by adopting injection molding or die cast molding without depending on processing and mass production is possible.

Further, the outer combustion side is formed into a circular recess having a lower portion formed into a super hole by reducing the diameter, and the opening of the internal combustion side recess has a large diameter such that the inner edge partially overlaps with the wall portion of the tapered hole. Since the branch hole is formed in the wall portion by forming the connection port and the polymerization of the connection port, it is not necessary to form the branch hole after the molding, and thus unnecessary members and labor required for forming the branch path are omitted.

The external combustion side recess is formed so that the flow rate restriction on the external combustion side can be performed by the tapered hole on the main body side and the valve body that is in contact with the wall portion of the tapered hole. Since the external combustion side is configured by screwing a valve member with a hollow shaft in which the lower side of the threaded portion is formed into a valve body into the external combustion side, each lighter that cannot be fixed flow rate control with a pore similar to the orifice provided on the internal combustion side Can be controlled, combustion in good condition can be obtained in any of the combustion sections, and adjustment in maintenance and repair can be easily performed by simply removing the valve member from the case and rotating the valve member.

Further, as compared with the pores, the clogging due to impurities in the liquefied gas is less likely to occur, and even if the clogging should occur, the valve is loosened to widen the gap, and the clogging is caused by the outflow pressure of the liquefied gas. Since it is solved, it has a feature that it can be readjusted and used without replacement.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view of a main part of a fuel distributor of a gas lighter according to the present invention.

FIG. 2 is a vertical sectional front view of a distributor main body.

FIG. 3 is a bottom view of the above.

FIG. 4 is a partially longitudinal front view of a gas lighter including the above fuel distributor.

[Explanation of symbols]

 1 block main body 2 internal combustion side connecting pipe 3 external combustion side recess 4 internal combustion side recess 5 branch hole 6 valve member 7 O ring 8 external combustion side connecting pipe 15 valve nozzle 15a O ring 33 taper hole 41 internal combustion side concave Opening place 62 Threaded portion 64 Valve body

Claims (1)

[Claims] 1. A circular external combustion side recess formed by projecting an internal combustion side connection pipe on one side of an upper surface and forming a lower part into a tapered hole by a diameter reduction, and an internal combustion side recess communicating with the connection pipe Alternately recessed inward from the lower surface, the internal combustion side recess communicates with the connecting pipe, and the opening of the internal combustion side recess partially overlaps with the wall portion of the tapered hole at the inner edge of the wall portion. A block-shaped main body with a large-diameter connection port that forms a branch hole on the top, and a hollow shaft that has a tubular upper part and a lower part than the screw part is formed on the valve body, and a hollow shaft with an inflow port on the upper part of the valve body A valve member for use in the external combustion side, the valve member is rotatably mounted in the recess on the external combustion side, the valve body is inserted into the tapered hole, and the upper part serves as a connecting pipe on the external combustion side and projects on the upper surface of the main body. Fuel distributor for gas lighter.