JPH05223251A - Combustion part member for gas lighter - Google Patents

Abstract

PURPOSE:To furnish a combustion part member for a gas lighter which makes it possible to increase uniformity of catalytic action, to lessen factors of cost increase in manufacture by enabling reduction of the number of components and further to improve design properties as well. CONSTITUTION:A combustion part member is formed of a flame contact material 2 which is formed in a vortex shape having a vortex surface in a state of intersecting the direction of jetting of flame and of a holding tube 3 which holds this flame contact material at the outer peripheral part of the vortex thereof. As the result, matching of the shape of the flame contact material with the shape of a fuel gas passage can be attained, an improvement in the efficiency of catalytic action by the uniform contact of the flame contact material with a fuel gas and the flame can be realized, design properties are improved and further factors of cost can be lessened since the flame contact material can be held directly by the holding tube.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion member which is used in a combustion part of a gas lighter and which acts as a combustion catalyst to enhance the stability of flame and to enhance the visibility of flame by red heat.

[0002]

2. Description of the Related Art As such a combustion member, for example, JP-A-54-159068 and JP-A-60-18502.
No. 1, Jikkou 3-30710, Jikkaihei 1-81456
As shown in Japanese Utility Model Publication No. 1-129572, various types are already known.

All of these utilize the combustion catalytic action of platinum. Among these, the techniques disclosed in Japanese Utility Model Publication Nos. 3-30710, 1-81456 and 1-129572 are platinum. The main purpose is how to effectively exert the catalytic action of. Therefore, in order to secure the contact efficiency, which is one of the factors that regulates the efficiency of catalytic action, the platinum is coiled, and in order to stabilize this coil shape practically, it is wound on a support material. It has a structure that allows it. However, some of these techniques are inadequate in some respects.

[0004] First, because of the winding structure around the support material, the contact surface of the platinum coil with respect to the fuel gas and the flame has a rectangular shape, and the shape of the fuel gas flow path or flame is circular. Therefore, the uniformity of the catalytic action on the flame cannot be obtained, and the efficiency of the catalytic action cannot be sufficiently exhibited.

Further, a supporting material is required in addition to the holding cylinder, and a step of winding a platinum wire around the supporting material is required, which causes many cost factors.

Further, from the viewpoint of the visibility of the flame, it is always exposed to the eyes of the user and, therefore, the designability is a major factor, but the designability is impaired due to the discrepancy in the shape. Get lost.

[0007]

Therefore, according to the present invention, it is possible to enhance the uniformity of the catalytic action, reduce the number of parts, reduce the factor of cost increase in manufacturing, and improve the design. It is an object of the present invention to provide such a combustion member.

[0008]

For this purpose, the combustion member according to the present invention comprises a flame contact material formed in a spiral shape having a spiral surface intersecting with the direction of ejection of the flame, and It is formed of a holding cylinder for holding the flame contact material via the spiral outer peripheral portion.

Since the flame contact material is formed in such a spiral shape, the shape of the contact surface of the flame contact material to the fuel gas and the flame is easy to be compared with the shape of the fuel gas flow path that defines the flame shape. Therefore, the flame contact material comes into uniform contact with the entire fuel gas and flame, and the uniformity of the catalytic action can be improved, and at the same time, the designability can be improved. Further, since the flame contact material has improved rigidity and can be directly held by the holding cylinder by adopting such a spiral shape, the supporting material required in the above-mentioned conventional technique is It becomes unnecessary and the cost factor is small.

Such a spiral-shaped flame contact material is formed of a platinum alloy to which a hardening alloying element, that is, an alloying element for increasing hardness to give greater rigidity is added. It is preferable to keep it stable and the alloying element is preferably selected from platinum group elements.

Since the flame contact material formed in a spiral shape has high rigidity as described above, it can be directly held by the holding cylinder. For such holding, if a fitting groove is formed in the inner peripheral wall of the holding cylinder and the spiral outer peripheral portion is fitted in the fitting groove, the assembly becomes easier.
preferable.

Further, in order to perform such holding, a holding tube is formed by a first tube piece having a tenon portion projecting therefrom and a second tube piece having a fitting receiving portion stepwise recessed. Then, with the tenon portion of the first cylinder piece fitted in the fitting receiving portion of the second cylinder piece, the spiral groove is formed in the fitting groove formed between the end surface of the tenon portion and the step surface of the fitting receiving portion. It is more preferable that the outer peripheral portion is fitted and pinched in terms of ease of assembly.

The spiral of the flame contact material is formed into a circular swirl because the fuel gas flow path is formed in a circular shape in an ordinary lighter. Therefore, in the case of giving a design change, the spiral shape of the fuel gas is changed. It is also possible to form an angular spiral inscribed in the flow path.

If the spiral of the flame contact material is formed in the shape of a cone that bulges toward the center, the stability of shape maintenance is improved, and the contact distance can be made longer, which is also preferable in terms of catalytic efficiency. ..

A linear material may be used to form the spiral shape, or a strip-shaped material may be used. If the strip-shaped material is used, the stability of the spiral shape may be further improved.

[0016]

Embodiments of the present invention will be described below. As shown in FIGS. 1 and 2, the combustion section member 1 of this embodiment includes a flame contact material 2 and a holding cylinder 3 that holds the flame contact material 2.

The flame contact material 2 has a spiral shape as shown in the figure, which is a platinum-iridium alloy linear material to which iridium is added so that an appropriate hardness can be obtained. It is formed in the shape of a spiral spring that intersects with the X direction (indicated by arrow 2 in FIG. 2) at a substantially right angle, and has a cone shape that slightly bulges toward the center.

The holding cylinder 3 includes a first cylinder piece 3a having a tenon portion 4 projecting therefrom and a second cylinder piece 3 having a fitting receiving portion 5 recessed in a stepwise manner.
It is formed into a short cylindrical shape by combining b with each other, and is fitted to the end face of the tenon portion 4 in a state where the tenon portion 4 of the first tubular piece 3a is fitted to the fitting receiving portion 5 of the second tubular piece 3b. The fitting groove 6 formed between the stepped surface of the receiving portion 5 and the outer peripheral portion of the spiral of the flame contact material 2 is sandwiched.

Therefore, the assembling of the combustion member 1 is carried out in the second step.
This is a very simple operation of fitting the first tubular piece 3a to the second tubular piece 3b with the flame contact member 2 fitted in the fitting receiving portion 5 of the tubular piece 3b.

FIGS. 3 to 5 show an example of the combustion section member 11 using the flame contact material 10 with a further increased degree of bulging, in which the number of spiral turns is increased and the second portion of the holding cylinder 12 is used.
The cylindrical piece 12b is formed so as to form a divergent passage, but the other points are the same as in the above-described embodiment. These combustion section members 1 and 11 are used by being assembled to the combustion section C of the gas lighter L as shown in FIG.

[0021]

As described above, the combustion member according to the present invention forms the flame contact material in the spiral shape of the spiral spring, so that the flame contact material to the fuel gas and the flame is entirely and uniformly distributed. Therefore, efficient contact can be obtained, and the efficiency of catalytic action can be improved. In addition, since the shape of the flame contact material easily matches the shape of the fuel gas flow path, good results can be obtained in improving the design, and the flame contact material can be directly held by the holding cylinder. Cost factors can be reduced.

[Brief description of drawings]

FIG. 1 is a plan view of a combustion section member according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA in FIG.

FIG. 3 is a plan view of a combustion section member according to another embodiment of the present invention.

FIG. 4 is a side view as seen from the direction of arrow B in FIG.

5 is a sectional view taken along the line CC in FIG.

FIG. 6 is a perspective view of a lighter to which a combustion member according to the present invention is attached.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Combustion part member 2 Flame contact material 3 Holding cylinder 3a 1st cylinder piece 3b 2nd cylinder piece 4 Tenon part 5 Fitting receiving part 6 Fitting groove

Claims (9)

[Claims] 1. A gas lighter comprising a flame contact material formed in a spiral shape having a spiral surface in a state of intersecting with a flame ejection direction, and a holding cylinder for holding the flame contact material via the spiral outer peripheral portion. Parts for combustion. 2. The combustion part member for a gas lighter according to claim 1, wherein the flame contact material is formed of a platinum alloy to which a hardening alloying element is added. 3. The combustion part member for a gas lighter according to claim 2, wherein the alloy element is any one of platinum group elements. 4. The holding cylinder is provided with a fitting groove in an inner peripheral wall, and the flame contact material is held by fitting the spiral outer peripheral portion in the fitting groove. Item 5. A combustion section member for a gas lighter according to any one of Items 3. 5. The holding cylinder comprises a first cylinder piece with a tenon portion projecting therefrom and a second cylinder piece with a fitting receiving portion recessed in a stepwise manner. A fitting groove is formed between the end surface of the tenon portion and the step surface of the fitting receiving portion in a state of being fitted to the fitting receiving portion of the second tubular piece, and the fitting of the spiral outer peripheral portion in the fitting groove is performed. The combustion member for a gas lighter according to any one of claims 1 to 3, wherein the flame contact material is held by being sandwiched and held. 6. The combustion section member for a gas lighter according to claim 1, wherein the spiral of the flame contact material is a circular spiral. 7. The combustion section member for a gas lighter according to claim 1, wherein the spiral of the flame contact material is in the shape of a cone that bulges toward the center. 8. The combustion section member for a gas lighter according to claim 1, wherein the spiral shape is formed of a linear material. 9. The combustion section member for a gas lighter according to claim 1, wherein the spiral shape is formed of a band-shaped material.