JP2934604B2 - Internal combustion gas lighter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called internal combustion type gas lighter in which air and gas are mixed and burned in a lighter body having a built-in combustion tube and the like. PROOF) Regarding gas lighter improvements,
More specifically, despite the fact that it is an internal combustion type gas lighter, the combustion heat in the combustion cylinder is easy to escape to the outside and it is possible to prevent wasteful heat conduction to the inside. Related to gas lighters.

[0002]

2. Description of the Related Art Conventionally, as such an internal combustion type gas lighter, for example, one disclosed in Japanese Patent Application Laid-Open No. 63-91431 is well known as a conventional example. As shown in FIG. 20, this conventional lighter has intake holes 6b ₁ , 6b ₁ ... For sucking air by negative pressure generated by ejecting fuel gas from a gas tank at an increased flow rate, and the fuel gas and air. Pipe 6b for accelerating the mixing of the gas, a diffuser 6c connected to the mixing pipe 6b to reduce and diffuse the flow rate of the mixed gas, and a gas (mixed gas) mixed with air by the diffuser 6c A combustion cylinder 6d for further decelerating and diffusing the mixture to produce a mixed gas of air having a flow velocity sufficient for ignition and combustion, and ignition means for igniting the combustible gas in the combustion cylinder 6d.

[0003]

However, in the above-mentioned internal combustion type gas lighter disclosed in Japanese Patent Application Laid-Open No. 63-91431, the mixed gas produced by the jet stream is burned and ignited in a burner shape. Although it has an advantage that it can be used without any problem even in a strong wind, it has a problem that the lighter main body becomes extremely hot because the combustion in the combustion cylinder 6d is performed at a relatively low level and heat conduction to other members is remarkable. Met.

Accordingly, conventional internal combustion type gas lighters include:
The problem of being unable to use an outer case made of plastic with poor heat resistance, and having to rely on metal members with excellent heat resistance naturally results in the overall weight becoming heavy. Was also possessed.

In addition, in the conventional internal combustion type gas lighter, since the diffusion surface of the diffuser 6c is formed in an inverted triangular shape, the mixed gas impinging on the diffusion surface is diffused in a direction away from the axis, so that the ignition is ignited. The required decelerated gas (hereinafter referred to as
Spare gas is scattered to a position farthest from the ignition means protruding in the axial direction, so that there are many ignition mistakes, which causes a reduction in the ignition rate.

The present invention has been made in view of such conventional problems, and the combustion heat in the combustion cylinder can easily escape to the outside, so that unnecessary heat conduction to the inside can be prevented. It is an object of the present invention to provide a light-weight internal combustion type gas lighter having a good ignition rate, in which an outer case made of plastic or the like can be used.

[0007]

SUMMARY OF THE INVENTION In order to solve the conventional problems as described above and to achieve the intended object, the configuration of the present invention is connected to the upper end of a gas ejection nozzle via a nozzle cap. A mixing pipe having an intake hole in a radial direction, a combustion cylinder connected to an upper portion of the mixing pipe, a discharge terminal fixed to the combustion cylinder, and a vertical pipe disposed between the mixing pipe and the combustion cylinder. through communication with the hollow of the ejection path which penetrates in a direction into the combustion cylinder
Diffusion hole and upward to communicate with the diffusion hole
And a diffuser having a tapered diffusion surface that becomes gradually narrower. The diffusion hole collects the mixed gas flowing from the mixing tube side in the axial direction.
The gas ejection nozzle is diverted through an inwardly diffusing surface to be bundled.
Directly open to the chisel and the nozzle
The cap has a skirt that gradually expands downward.
Equipped with a ring-shaped gasket on the outer periphery
And an internal combustion type gas lighter having a tail plug of the mixing pipe .

[0008] The skirt portion may have a height of 15 to 20 degrees.
It is good Ru includes an inclined surface that is enlarged outwardly at an angle.

Further, the mixing tube has a piezoelectric unit attached and detached.
The nozzle cap is supported by the mounting holder
Preferably , the lower end surface is seated on the gasket of the pump .

[0010]

[0011] In the internal combustion type gas lighter of the present invention configured as described above, the diffusion hole flows in from the mixing pipe side.
Diffusion surface inclined inward to focus the gas mixture axially
Directly open to the gas ejection nozzle via
And the nozzle cap is gradually turned downward.
The skirt has a diameter
Attach a gasket in the shape of
The auxiliary gas decelerated by the diffusion surface
Is focused axially along the slope,
A direct jet that jets straight from the gas jet nozzle
The fuel gas passes through the diffusion holes as it is, and
While purging the bundled spare gas upward from the axial direction,
Will be spread to spread to
Gas leakage from the lower end opening of the tube can be prevented .

[0012] The skirt portion may have an angle of 15 to 20 degrees.
By providing an inclined surface that is enlarged outward at an angle,
The nozzle cap is lifted by raising the gas ejection nozzle.
Easy removal of the gasket even if it is pushed up
It will be possible to prevent the fall.

The mixing tube has a piezoelectric unit detachably mounted.
The nozzle cap is supported by the holding holder
By mixing the lower end surface on the
Is fixed to the mounting holder and the nozzle cap
Only the tip is positioned for vertical displacement.
Become.

[0014]

[0015]

[0016]

Next, an embodiment of the present invention will be described with reference to the drawings. In the figure, A is an internal combustion type gas lighter according to the present invention.
As shown in FIG. 1 or FIG. 2, a tank upper lid 3 integrally formed above a gas tank 2 formed in the lighter main body 1 is provided.

In the tank upper lid 3, a bottomed cylindrical fitting recess 3a having an upper opening is integrally formed, and a through hole communicating with the gas tank 2 opened at the bottom center of the fitting recess 3a. The valve 4 is hermetically press-fitted via 3b.

This valve mechanism 4 has a cylindrical nozzle spiral 4a having an opening (not shown) at the top end face, and a cylindrical nozzle bottom plug with a bottom fitted into the lower opening of the nozzle spiral 4b. A valve chamber (not shown) is formed inside with the body 4b. In the valve chamber, a gas ejection nozzle 4c has an upper end located outside the opening of the nozzle spiral 4a via an O-ring and a spring. (See FIG. 2).

A valve operating lever 1 (described later), which is swingably supported up and down, is provided at the neck of the gas ejection nozzle 4c.
1 (see FIG. 9) is engaged. When the valve operating lever 11 is lifted, the neck of the gas ejection nozzle 4c is operated in the ejection direction to open the valve and eject the gas. Is assembled to start.

Further, a liquefied gas suction member 4e is mounted on the bottom surface of the nozzle bottom plug 4b via a filter 4d such as a malt and a heat collecting member 4g serving also as a nail-shaped stator.
The upper end of the liquefied gas sucking member 4e is the heat collecting member 4g.
And a lower end is formed of a tube tube which is assembled so as to extend into the gas tank 2 and, if necessary, is filled with a sintered core or the like, or is contacted with the liquefied gas in the gas tank 2 on the outer peripheral surface. A notch hole may be opened as much as possible.

An O-ring 4f is fitted on the outer peripheral surface of the nozzle bottom plug 4b through an annular groove to maintain a shielding property with the inner peripheral surface of the circumscribing through hole 3b. Needless to say.

On the other hand, on the gas ejection nozzle 4c,
The internal combustion mechanism 6 is assembled. This internal combustion mechanism 6
As shown in FIG. 3 to FIG. 5 in an enlarged manner, a nozzle cap 6a sealed at the ejection port of the gas ejection nozzle 4c, and the gas ejection nozzle 4 for inserting the nozzle cap 6a.
c, a mixing tube 6b covered at the upper end, a diffuser 6c integrally formed on the upper portion of the mixing tube 6b, and a combustion tube 6d joined to house the diffuser 6c. The mixing tube 6b, the diffuser 6c, and the combustion cylinder 6d are supported by a mounting holder 9 described later.

The nozzle cap 6a is shown in FIG.
As shown in FIG. ₁ With a ska
Port 6a_TwoConsisting of a hollow cylindrical lid with
Nozzle plate 6a_ThreeGas holes (not shown)
The passage of the vaporized gas ejected from the outlet nozzle 4c
This further accelerates the flow velocity.

[0024] Also, the skirt portion 6a ₂ is, 15 to 2
The gasket 17 is provided with an inclined surface whose diameter is increased outward at an angle of 0 degrees to prevent a ring-shaped gasket 17 to be described later from falling off easily, in other words, as shown in FIG. When the neck portion of the nozzle 4c is operated in the pulling-out direction by the lifting operation of the valve operation lever 11, the gasket 17 flattens and supports the tail plug of the mixing tube 6b so as to be more airtight.

On the other hand, the mixing pipe 6b is formed in a hollow cylindrical body, and as shown in FIG. 4 or 5, a plurality of intake holes 6b ₁ and 6b ₁ are opened in the radial direction. The intake holes 6b ₁ , 6b ₁ are connected to the nozzle plate 6a ₃
The air is sucked in by utilizing the negative pressure generated when the fuel gas passing through the fine holes is ejected at an increased flow rate, thereby promoting the mixing of the fuel gas and the air.

The outer peripheral surface of the mixing pipe 6b is
As shown in the connecting member 6b ₂ it is projected. The connecting member 6b ₂ is intended to be detachably engaged and supported on the connecting part of the mounting holder 9 to be described later, when placing the same mounting holder 9 at a predetermined position, the lower end opening of the mixing tube 6b is,
It is assembled on the gas ejection nozzle 4c so as to be fitted on the outer periphery of the nozzle cap 6a.

Further, a diffuser 6c is provided above the mixing tube 6b.
Are integrally formed. The diffuser 6c, the vertical ejection passage 6c ₁ passing through the (coaxial direction),該噴Detchi 6c
₁ and diffusion hole 6c ₂ formed on the top surface to pass through communication, 6c ₂
Are formed.

The diffusion holes 6c ₂ , 6c ₂ ...
As shown in the figure, the recess is formed in a plane cross shape, and tapered diffusion surfaces 6c ₃ , 6c ₃ ...

In other words, the diffuser 6c has an internal
Ejection path 6c₁ A flat cross-shaped recess on the top surface to communicate with
Diffusion hole 6c_Two , 6c_Two ... four blocks through
6c _Four , 6c_Four … And each of the divided
Block body 6c_Four , 6c_Four Prescribed on each bottom of
Tapered diffusion surface 6c inclined at an angle_Three, 6c_Three...
It is installed continuously.

Therefore, the mixed gas flowing from the mixing pipe 6b is guided to converge in the axial direction by contacting the tapered diffusion surfaces 6c ₃ , 6c ₃ . The mixed gas is diffused upward so as to intersect while further promoting gas mixing.

Furthermore, combustion cylinder 6d is a hollow cylindrical body the upper and lower ends are opened, the lower end opening is supported on the flange 6c ₅ of the diffuser 6c, is fixed to the mounting holder 9 to be described later upper side It is fixed by being engaged with the discharged terminal 8.

In other words, the combustion cylinder 6d is formed by penetrating and supporting a connection hole (not shown) formed in a wall surface of an insulator (insulator) 7 fixed to a mounting holder 9 (see FIG. 2). ), It is positioned and fixed so as to be assembled concentrically with the diffuser 6c.

As shown in FIGS. 7 to 8, the mounting holder 9 has a supporting portion 9a at the upper end for supporting the discharge terminal 8, and one end connected to one electrode of a piezoelectric unit 13 to be described later. A guide unit 9c having a guide groove 9b for guiding and supporting a conductive wire 10 whose end is connected to the upper discharge terminal 8, and a piezoelectric unit 13 formed so as to protrude toward the ignition operator side of the guide unit 9c. It has a mounting portion 9d for detachably holding and a connecting portion 9e projecting from the guide portion 9a on the valve mechanism side.

[0034] The supporting portion 9a, the Zetsuenko 7 comprises a support groove 9a ₁ of the upper end is released to allow the fitting from above, the guide groove 9b in the support groove 9a ₁ is communicated with .

The guide portion 9c is formed of a stepped member formed so that the upper end side is formed in the combustion cylinder 6d and the lower end side is formed to the bottom surface of the vertical hole 3c for mounting the piezoelectric unit. The guide groove 9b is formed.

Further, the connecting portion 9e is connected to the mixing tube 6b.
It becomes the connecting member 6b ₂ from protruding from the slit grooves to receive from below, they are those that can be easily detached by sliding in the vertical direction.

Therefore, simply inserting the piezoelectric unit 13 into the mounting holder 9, in other words, the mounting portion 9 d
Simply inserting the detachably between the guard plate 9d _1, 9d _1, the conductive wire 10 that is pre-assembled in the mounting holder 9
By simply inserting the mounting holder 9 into the vertical hole 3c of the tank upper lid 3, the internal combustion mechanism 6 can be easily positioned, and the gas ejection nozzle 4 can be electrically connected.
It will be connected and arranged above c (see FIGS. 3 and 4).

On the other hand, the ignition mechanism of the internal combustion type gas lighter A is interlocked with the valve operating lever 11 having one end engaged with the neck of the gas ejection nozzle 4c and the other end of the valve operating lever 11. The ignition operation device 12 includes a piezoelectric unit 13 that is operated by a pushing operation of the ignition operation device 12.

One end 11a of the valve operating lever 11 is fitted and supported on the neck of the gas ejection nozzle 4c so as to swing vertically about a bearing 3d projecting from the top surface of the tank upper lid 3 as a fulcrum. When the other end 11b is pushed down by the ignition operating element 12, the valve operating lever 11 swings around the fulcrum, and the neck of the gas ejection nozzle 4c is pulled out. Is to be operated.

The piezoelectric unit 13 has an outer box 13a and an inner box 13b which are fitted to each other so as to expand and contract in the vertical direction. , A hammer, a return spring, and the like.

Further, as shown in FIGS. 10 to 11, the ignition operating element 12 has connecting pieces 12a, 12a for slidably connecting and supporting the inside of the windshield 14, as shown in FIGS. , Ground 15 are detachably provided inside. still,
In the figure, 14a is an air inlet, 14b is a locking leg, and 14c is a burner cap.

A gas amount adjusting screw 16 is rotatably mounted in the vicinity of the gas ejection nozzle 4c. The gas amount adjusting screw 16 is, as shown in FIG.
A first ring screw 16a meshed with the outer periphery of the nozzle screw 4a, spacing members 16b, 16b connected to the upper end of the first ring screw 16a, and spacing members 16b, 1
6b and the outer peripheral surface thereof is connected to the lighter body 1
And a second ring screw 16c exposed from the surface of the second ring screw 16c.

The internal combustion type gas lighter A according to the present invention having the above-described structure pushes down the ignition operating element 12 with the thumb of the hand holding the lighter main body 1, thereby pressing the piezoelectric unit 13 to operate. A spark discharge is generated at the discharge terminal 8, and the neck of the gas ejection nozzle 4c is operated in the withdrawal direction by the valve operating lever 11 to open the valve, and the gas tank is sucked up through the liquefied gas suction member 4e. The fuel gas in 2 reaches the filter 4d and is vaporized.

The vaporized gas passes through the filter 4d, passes through the valve hole of the nozzle bottom plug 4b, and further passes through a perforation (not shown) opened in the radial direction of the gas ejection nozzle 4c. (Not shown) and is ejected outward from the ejection port at the upper end.

[0045] Then, the vaporized gas ejected from such a gas ejection nozzle 4c is ejected strengthen further the flow rate by sealing the nozzle plate 6a _3, mixing tube 6b by utilizing a negative pressure generated by such a flow rate at the same time It is injected from the air inlets 6b ₁ to the diffuser 6c with suction air.

The mixed gas of the injected gas and air comes into contact with the diffusion surfaces 6c ₃ , 6c ₃ ... In the diffuser 6c and is guided to converge in the axial direction. The direct fuel gas injected linearly from the nozzle 4c is directly used as the cross-shaped diffusion holes 6c ₂ , 6c _2.
.. Are passed through the central hole and diffused so as to expand outward while pursuing upward from the axial direction, so that the spark discharge is ignited at an upper position in the combustion tube 6d, and the burner is ignited. It ignites in a shape. In the drawing, reference numeral 17 denotes a ring-shaped gasket of a shield member, and reference numeral 18 denotes a catalyst which is glowed upon ignition.

Further, when the temperature change of the windshield during the burner ignition (ignition time 40 seconds) between the internal combustion gas lighter according to the present invention and the conventional internal combustion gas lighter was measured, the results shown in FIGS. 16 to 19 were obtained. Was done. Incidentally, as the conventional lighter, a diffuser in which the diffusion surface of the diffuser was formed in an inverted triangular shape was used, and other than that, an internal combustion gas lighter having the same material and the same structure as the lighter of the present invention was used.

The measurement results are obtained after heating the windshield at the time of ignition to 40 ° C. each time, and the temperature measurement positions are shown at points A and B as shown in FIG. The measurement was performed in several places, and particularly, the point B was measured with the outer wall of the gas tank partially removed and exposed.

As a result, the lighter according to the present invention was obtained at points A and B
In each of the points, the heating temperature is suppressed lower than that of the conventional internal combustion type gas lighter, and since the combustion position is high and heat is easily escaping to the outside, it is easy to cool down and the heat conduction to the inside can be reduced ( (See FIGS. 16 to 19)
There was no misfiring, such as firing in one shot.

Incidentally, the internal combustion type gas lighter A of the present invention is not limited to the present embodiment, but can be freely designed and modified within the scope of the object of the present invention. It is inclusive.

For example, if necessary, a filter having a small diameter may be mounted on the lower surface side of the nozzle cap 6a (specifically, the perforation 6a ₁ ). As the ground 15, as shown in FIG. 15, a horizontal plate 15a inserted into the ignition layer blocking 12 and disposed in contact with the upper end of the piezoelectric unit 13; Although the locking projection 15b and the contact leg 15c abutting on the valve operation lever 11 at a predetermined position are formed, the invention is not limited to this, and another shape of ground may be used.

[0052]

The present invention is configured as described above, and the diffusion holes allow the mixed gas flowing from the mixing pipe side to flow in the axial direction.
The gas injection through a diffusing surface that slopes inward to focus
Directly open to the discharge nozzle and
The skull cap is a skirt that gradually expands downward
And a ring-shaped gasket around its outer periphery.
By mounting and mixing the bottom end of the mixing tube ,
The preliminary gas decelerated by the diffusion surface is moved along the inclined surface.
And the gas ejection nozzle
Direct fuel gas that jets straight from the
After passing through the diffusion hole, the focused spare gas is
Diffusion to spread outward while chasing upward from the heart
The ignition position is on the upper (open end) side inside the combustion cylinder
As a result, combustion heat can easily escape to the outside,
In addition to preventing unnecessary heat conduction, the discharge terminal
Sparks easily ignite, increasing the ignition rate.
The mixing tube has an effect such as
To prevent gas leakage from the lighter body.
Waste gas accumulation can be prevented, and explosive
This has the effect of preventing dangerous ignition of fire .

Further, the skirt portion may have an angle of 15 to 20 degrees.
By providing an inclined surface that is enlarged outward at an angle,
The nozzle cap is lifted by raising the gas ejection nozzle.
Easy removal of the gasket even if it is pushed up
This has the effect of preventing falling .

Further, the mixing tube has a piezoelectric unit attached and detached.
The nozzle cap is supported by the mounting holder
By seating the lower end surface on the gasket of the
While the mixing tube is fixed to the mounting holder,
Only the cap is positioned for vertical displacement
Therefore, an unnecessary load on the gas jet nozzle may be imposed.
Conventional internal combustion gas lighter that can be easily assembled
Compared to the valve opening operation it is also intended to bring out the effects such can be carried out more smoothly.

[0055]

[0056]

As described above, in the internal combustion type gas lighter of the present invention, the heat of combustion in the combustion cylinder can easily escape to the outside, and unnecessary heat conduction to the inside can be prevented. The present invention has a tremendous practical value in that the present invention can be used as well as being simple in configuration and suitable for mass production and inexpensive to be supplied to consumers.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an open state of an internal combustion type gas lighter according to the present invention.

FIG. 2 is a longitudinal sectional view of the internal combustion type gas lighter.

FIG. 3 is a partially sectional perspective view showing a main part of the internal combustion type gas lighter.

FIG. 4 is an enlarged vertical sectional view showing an internal combustion mechanism of the internal combustion type gas lighter.

FIG. 5 (a) is an explanatory diagram showing a state when the internal combustion type gas lighter is opened, and FIG. 5 (b) is an explanatory diagram showing a state when the internal combustion type gas lighter is closed.

FIG. 6 is an explanatory view of a diffuser integrally formed with a mixing tube.

FIG. 7 is an exploded perspective view of the internal combustion type gas lighter.

FIG. 8 is an explanatory view showing a mounting holder.

FIG. 9 is an explanatory view showing a valve operation lever.

FIG. 10 is a perspective view showing an assembly connection between the windshield, the ignition operator, and the ground.

FIG. 11 is an explanatory diagram of an ignition operation element.

FIG. 12 is a bottom view showing a connection state between the windshield and the ignition operation element.

FIG. 13 is an explanatory diagram of a windshield used in this embodiment.

FIG. 14 is an explanatory diagram of a gas amount adjusting screw used in the present embodiment.

FIG. 15 is an explanatory diagram showing a ground assembled in the ignition operation element.

FIG. 16 is a comparison diagram showing temperature changes at points A and B of the windshield during burner ignition (ignition time 40 seconds) between the internal combustion gas lighter of the present invention and a conventional internal combustion gas lighter.

FIG. 17 shows the measurement positions of the lighter (points A and B on the windshield).
FIG.

FIG. 18 is a time-lapse comparison table showing the temperature change at point A.

FIG. 19 is a time-lapse comparison table showing the temperature change at point B.

FIG. 20 is a vertical sectional view showing a main part of an internal combustion mechanism of a conventional internal combustion type gas lighter.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lighter main body 2 Gas tank 3 Tank top lid 3a Fitting concave part 3b Through-hole 3c Vertical hole 3d Bearing 4 Valve 4a Nozzle spiral 4b Nozzle bottom plug 4c Gas ejection nozzle 4d Filter 4e Liquefied gas suction member 4f O-ring 4g Heat collection cylinder 5 Body 6 Internal combustion mechanism 6a Nozzle cap 6a₁ Perforation 6a_TwoSkirt 6a_ThreeNozzle plate 6b Mixing tube 6b₁ Inlet 6b_Two Connecting member 6c Diffuser 6c₁ Blowout path 6c_Two Diffusion hole 6c_ThreeDiffusing surface 6c_FourBlock body 6c_FiveFlange  6d Combustion cylinder 7 Insulator 8 Discharge terminal 9 Mounting holder 9a Support 9a₁Support groove 9b Guide groove 9c Guide part 9d Mounting part 9d₁Guard plate 9e Connecting portion 10 Conductive wire 11 Valve operating lever 11a One end 11b Other end 12 Ignition operator 12a Connecting piece 13 Piezoelectric unit 13a Outer box 13b Inner box 14 Windshield 14a Air inflow hole 14b Lock leg 14c Burner cap 15 Ground 15a Horizontal plate 15b Locking projection 15c Contact leg 16 Gas amount adjusting screw 16a First ring screw 16b Space holding piece 16c Second ring screw 17 Gasket 18 Catalyst

Claims (3)

(57) [Claims] 1. A mixing pipe connected to an upper end of a gas ejection nozzle via a nozzle cap and having a radial intake hole, a combustion cylinder connected to an upper part of the mixing pipe, and fixed to the combustion cylinder. A discharge terminal, and a hollow ejection passage which is provided between the mixing tube and the combustion tube and penetrates in a vertical direction, communicates with the inside of the combustion tube.
Diffusion hole and the upward direction to communicate with the diffusion hole.
And a diffuser having a tapered diffusion surface that gradually becomes thinner. In the internal combustion type gas lighter, the diffusion hole is configured to allow the mixed gas flowing from the mixing pipe side to flow in the axial direction.
The gas jet through an inwardly diverging diffusion surface to focus
Directly open to the nozzle and
The cap is a skirt that gradually expands downward.
With a ring-shaped gasket
An internal combustion type gas lighter, which is attached to form a bottom plug of the mixing tube . 2. The skirt portion has an angle of 15 to 20 degrees.
The internal combustion type gas lighter according to claim 1 , further comprising an inclined surface whose diameter is increased outward . 3. The mixing tube has a piezoelectric unit detachably attached thereto.
The nozzle cap is supported by the holding holder
The internal combustion type gas lighter according to claim 1 or 2 , wherein a lower end surface is seated on the sket .