JPH10232020A - Combustion wick for combustion apparatus for liquid fuel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cause an ignition member to make access to a combustion wick as interference with a closing cap due to variation of the shape of a combustion part is avoided by a method wherein the combustion part of the combustion wick is formed in a shape where the size of a tip part is decreased. SOLUTION: A combustion part 61 of a combustion wick 6 is formed of glass fibers, for example, glass fibers are bundled, a tip part 61a thereof is molten and bound and formed in the pointed tip-form state of a writing brush. In the combustion wick 6, a fuel consumption amount when ignition is effected, the shape of flame, and the length of flame are set according to the size, the number of glass fibers, and the length of the glass fibers of the combustion part 61. As noted above, by forming that the tip part 61a of the combustion part 61 of a combustion wick 6 is formed in a fine state, the rotation radius of a circular arc wherein the tip of the combustion wick 6 and a wick holder 7 make no contact with a fulcrum (a pin) 17 of a closing cap 16 is decreased and therealongwith a distance between the fulcrum 17 of the closing cap 16 and the combustion wick 6 is shortened. Besides, there is no need for the inside diameter of the closing part of the closing cap 16 to be increased to a value higher than the outside diameter of the wick holder 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion wick for sucking and burning liquid fuel in a liquid fuel combustion device such as a lighter using alcohol fuel or the like.

In particular, the present invention relates to a lighter for smoking equipment, an igniter such as a torch and a lantern, and a burning apparatus such as a lighting apparatus, which uses a liquid fuel such as alcohols, benzene-based hydrocarbons and petroleum-based hydrocarbons. The present invention relates to a structure of a combustion core portion for obtaining a desired combustion state.

[0003]

2. Description of the Related Art In general, as fuels for burning appliances such as lighters for smoking articles, igniters, torches, lighting equipment, etc., alcohol fuels such as ethyl alcohol, petroleum benzene-based benzene fuels, and liquefied gases such as butane gas and propane gas are used. Fuel is being used.

[0004] The performance, ease of use, and design structure of each burner differ depending on the type of fuel used, and each burner has its own characteristics. For example, in the case of liquefied gas fuel, the gas pressure is high in the operating temperature range of the combustion equipment, and the container for storing the fuel needs to have a pressure-resistant structure. Further, the flame length changes in accordance with the fluctuation of the gas pressure. In particular, there is a characteristic that the gas pressure greatly varies logarithmically with the temperature, and there is a problem that the flame length greatly changes with the temperature. In order to reduce the change in the flame length, special design measures for correcting the temperature of the fuel supply mechanism of the combustion appliance are required, which makes the structure complicated and disadvantageous in cost.

On the other hand, liquid fuels such as alcohol fuels are liquid at room temperature, have relatively low vapor pressure, do not require a pressure-resistant container for a fuel storage unit, and have advantages in terms of simplification of the structure of combustion equipment and cost. Become. Also, in this liquid fuel combustion device,
As a means for supplying the liquid fuel from the fuel storage unit to the combustion unit, generally, using the surface tension of the liquid fuel,
A combustion wick is used that sucks up continuous pores or slits formed by bundling fine fibers by capillary action and burns at the tip.

Specifically, the above-mentioned combustion wick is used for sucking up the fuel, using a string-like fiber twisted, a bundle of glass fibers, or both, and wrapping the glass fiber with a cotton thread to unravel it. The lower end functions as a fuel sucker and burns at the upper end, using a metal wire or the like that is woven.

Further, the combustion portion of the combustion wick must be hermetically closed by a closing cap that opens and closes to prevent the liquid fuel from volatilizing when not in use. Further, in order to ignite the combustion wick, it is necessary to install an ignition member such as a file wheel that blows a spark adjacent to the combustion wick.

[0008]

However, when trying to make the burning appliance such as a lighter compact as described above, the above-mentioned closing cap is provided so as to open and close with one end as a fulcrum. Generally, the sealed part that seals the burning part of the combustion wick passes through an arc-shaped trajectory, and the trajectory does not interfere with the tip of the combustion wick, wick holder, file file, etc. Has become an obstacle.

In particular, when the wick holder portion of the combustion wick is sealed, it is interposed between the igniting member such as a file wheel and the like so that the outer peripheral portion of the wick holder portion is covered with the sealed end of the closing cap. If the ignition member is arranged away from the combustion wick so as to avoid interference with the spark, there is a problem that, for example, the reach of the spark becomes long and the ignitability is reduced. From this, the ignition member is arranged close to the combustion wick,
It is desired to ensure ignitability.

On the other hand, when the igniting member approaches the combustion wick, the flow of air around the combustion flame changes, and the closer the igniting member approaches the combustion flame, the more the inflow of secondary air into the combustion flame is hindered. However, the flame tends to bulge toward the ignition member and the edges of the flame approach or come into contact with each other, which may cause an increase in the temperature of the ignition member such as a file wheel. For example, when a file wheel is heated, heat is transferred to the support portion formed of the plastic, the support portion is melted, and the file wheel falls off due to the pressing force of the igniter stone pressed against the file wheel. May become unusable.

Further, when a burning wick made of only a bundle of fiber material such as glass fiber is used, the end of the closing cap contacts the tip of the wick, or an ignited object such as a cigarette is wicked. If the glass fiber bundle at the tip of the combustion wick is disturbed and spreads by touching the tip, the combustion flame becomes thick as shown in FIG. 7 described below, and there is a possibility of approaching an ignition member such as the aforementioned file wheel. At the same time, a part of the scattered core tip may be caught in the sealed portion of the closing cap, and the volatilization prevention function may be reduced.

The present invention has been made in view of the above circumstances, and provides a combustion wick for a liquid fuel combustion appliance in which the ignition member can be made closer to the combustion wick while avoiding interference with the closing cap by changing the shape of the combustion portion. Things.

[0013]

In order to solve the above-mentioned problems, a combustion wick in a liquid fuel combustion device according to the present invention is characterized in that liquid fuel is sucked up by a suction portion by capillary action and burned in a combustion portion. It is characterized in that it is provided in a shape in which the portion becomes thin.

Further, with respect to the closing cap which is provided so as to be opened and closed by a fulcrum at one end, the tip of the combustion portion opposite to the fulcrum of the closing cap is removed so that the tip becomes thin. It is provided in.

Further, when the burning portion is made of glass fiber, it is preferable that the tip is melted and bound in a shape pointed like a brush tip. This combustion wick can be formed by bundling glass fibers, heating and melting a part of the glass fiber with a high-temperature burner, and stretching and separating the molten portion.

On the other hand, the combustion wick may have a combustion portion made of a porous glass material having open cells or a sintered porous ceramic material formed into a tapered shape.

The liquid fuel is mainly composed of an alcohol fuel, for example, a lower monohydric alcohol such as methyl alcohol, ethyl alcohol or propyl alcohol, and mixed with a saturated hydrocarbon such as hexane or heptane for coloring the flame. Benzene, petroleum hydrocarbon and the like are used.

In addition to the combustion wick formed of different materials for the combustion portion and the suction portion as in the embodiment described later, the combustion portion and the suction portion are integrally formed of the same material. May be done.

[0019]

According to the combustion wick of the present invention, by providing the combustion portion in a shape having a narrow tip portion, interference with the closing cap is avoided, thereby shortening the installation distance between the closing cap and the burning wick. And the installation distance between the combustion wick and the ignition member can be reduced, and the closing cap can be made smaller, which further increases the degree of design freedom and makes the combustion device compact. And cost reduction can be realized.

In the case where the tip of a burning portion made of glass fiber is melted and bound, or the burning portion made of a porous glass material or a porous ceramic material is tapered, the burning wick is prevented from volatilizing. Even if the cover cap is put on and the lid contacts the tip of the combustion wick or an ignited object such as a cigarette, the tip of the combustion wick is not deformed. Therefore, even after repeated use for a long time, the form of the combustion wick does not change, and the combustion flame can maintain a stable shape, and the combustion flame does not approach or touch a nearby component, thereby preventing its temperature from rising. In addition, a good sealing state can be ensured without being caught in the gap when the closing cap is opened and closed. In particular, in the case where the bundled glass fibers are heated and melted, and the melted portion is stretched to form the combustion portion of the combustion wick, the melted bundle is simple and can be provided in a good shape.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a combustion wick in a combustion device for liquid fuel according to the present invention will be described below with reference to the drawings.

<First Embodiment> FIG. 1 shows a schematic sectional structure of a lighter as an example of a liquid fuel combustion device incorporating a combustion wick of the present embodiment.

The combustion wick 6 is formed of a different material in an upper combustion portion 61 and a lower suction portion 62, and is formed in a state where the lower end portion of the combustion portion 61 and the upper end portion of the suction portion 62 are in contact with each other. They are connected by a wick holder 7.

The combustion section 61 is made of glass fiber.
For example, a glass fiber thread is bundled, and its tip 61a is fused and bound to form a sharp brush tip.

The formation is as shown in FIG.
As shown in (A), a glass fiber yarn F is bundled into a cylindrical shape to have a required diameter, and an intermediate portion of the fiber bundle is heated by a high-temperature burner flame G. Then, as shown in (B), the glass fiber yarn F in the heated portion is melted and both sides of the glass fiber bundle are pulled outward. As a result, the glass fibers in the molten portion are fused and bonded to each other, and are also stretched so that the tip is sharpened like a tip of a brush. Further, as shown in (C), the root portion 61b is cut into a predetermined size, for example, diagonally, thereby producing the combustion portion 61 of the combustion wick 6 with the tip portion 61a bound.

The base portion of the combustion section 61 as described above is inserted and fixed in the cylindrical core holder 7 made of metal.
The suction part 62 is formed by molding and sintering polyethylene powder to form a rod having a large diameter head 62a. The suction part 62 is inserted into a mounting hole of the upper lid 4 of the fuel tank 2 from a leg. The lower end of the head portion 62a of the suction head 62 is held by a locking portion at the lower end of the hole of the upper lid 4, and the joining screw 7a on the outer peripheral portion of the core holder 7 is tightened from above through the O-ring 31 into the screw hole 4a. 63 is attached to the upper lid 4 while being joined to the suction part 62.

In the combustion wick 6, the fuel consumption, the shape of the flame, and the length of the flame at the time of ignition are set according to the thickness, the number, and the length of the glass fibers of the combustion portion 61. On the other hand, in the suction portion 62, the manner of forming the internal voids varies depending on the thickness, the particle size of the sintered polyethylene powder, the sintering density, and the like, and the fuel suction and supply characteristics are set. The head 62a of the suction part 62 has a large diameter and a large volume, and constitutes a fuel reservoir for holding the liquid fuel. The fuel reservoir provides stable combustion.

For example, in the case of the combustion core 6 incorporated in a smoking article lighter, the glass fiber of the combustion part 61 has a thickness of 6 μm, a fiber density (basis weight) of 150 mg / cm ³ , an outer diameter of 3 mm, The core holder 7 having a length of 10 mm is inserted into the core holder 7 so as to protrude from the tip of the core holder 7 by a length of 3 mm. On the other hand, the suction part 62 puts polyethylene powder, which is a mixture of particles having an average particle size of 140 mesh and 70 to 200 mesh, into a molding die.
Sintered at 0 ° C. for 10 minutes, and the outer diameter of the head 62a is 4.
2mm long 3mm, lower leg 4mm outside diameter, length 37
mm.

The combustion wick 6 as described above is incorporated in the lighter 1 as a burning appliance, and the suction part 62 is attached to the fuel storage part 5.
And the liquid fuel is sucked up and supplied to the combustion portion 61, and the tip portion 61a of the combustion portion 61 is ignited by the ignition member 10 to perform combustion. When continuous combustion is continuously performed, By setting the characteristic such that the fuel supply amount by the suction part 62 is larger than the fuel consumption amount of the combustion part 61, the combustion in the combustion part 61 is continued without changing the shape and length of the flame. .

Next, the structure of the lighter 1 will be described.
The lighter 1 has a bottomed cylindrical tank 2 into which a fiber material 3 (filling) is inserted, and an upper lid 4 is fixed to the upper part of the tank 2 to store liquid fuel. The fuel storage unit 5 is configured.

For example, the tank 2 is a molded article made of polypropylene and has an inner volume of 5 cm ³ . The fibrous material 3 is obtained by pushing a polypropylene fiber having a thickness of 1 to 2 denier into the tank 2 at a density of 0.1 g / cm ^3.
4 g of liquid fuel mixed with 5 wt% of hexane is injected and impregnated and stored.

Further, the combustion wick 6 is inserted vertically through the center of the upper lid 4 into the tank 2, and the wick holder 7 is inserted.
Is fixed to the upper lid 4. The lower end of the suction portion 62 of the combustion wick 6 contacts the fiber material 3 in the tank 2,
The liquid fuel impregnated in the fiber material 3 is sucked up by using a capillary phenomenon. The flaming portion 61 of the wick 6 is ignited to generate a flame and burn. As described above, the flaming portion 61 from the wick holder 7 has a flame length of 30 mm.
Is adjusted to about 3mm.

An ignition member 10 is disposed on the upper lid 4 so as to face the tip of the combustion portion 61 of the combustion core 6.
Reference numeral 0 designates a pyrotechnic stone 12 which is vertically movably inserted into a bracket 11 fixed to the upper lid 4, and a rotating file 13 as a close member closest to the combustion flame H is provided at an upper end of the bracket 11. The tip of the igniter stone 12 is provided on the peripheral surface of the rotating file 13 in a structure in which the tip of the igniter stone 12 is pressed by the urging force of the stone pressing spring 14. I have.

The combustion portion 61 of the combustion wick 6 is connected to the wick holder 7
A cover cap 16 for volatilization prevention is provided together with the protrusion of the fuel tank 2. The closure cap 16 is rotatably supported by a pin 17 at one end of the upper surface of the upper lid 4 in the fuel tank 2. . Further, an O-ring 19 is attached to the outer peripheral root portion of the core holder 7, and the inner peripheral surface of the sealing portion of the closing cap 16 is pressed into contact with the core cap 7 to improve the sealing performance.

In the lighter 1, in the assembled state, the upper end of the combustion portion 61 of the combustion wick 6 is higher than the height of the contact point between the rotary filer 13 and the igniter stone 12 by 2.5 mm. 13 are set to have a positional relationship of 10 mm from the center.

The flame H in the combustion state has a flame length of 3
In the state set to be 0 mm, the flame width is 9 mm,
The position where the flame width is widest is 3 mm from the lower end of the flame. The combustion flame H is a rotating file 13 serving as an ignition member 10.
Burning without touching.

In the lighter 1 of the above embodiment, the tip portion 61a of the combustion portion 61 of the combustion core 6 is formed thin, so that the tip of the combustion core 6 with respect to the fulcrum 17 (pin) of the closing cap 16 is connected to the core. The radius of rotation of the arc that does not contact the holder 7 is reduced, and accordingly the closing cap 1 is closed.
The distance between the fulcrum 6 and the combustion wick 6 can be shortened, and the inner diameter of the closed portion of the closing cap 16 does not need to be greatly expanded with respect to the outer diameter of the wick holder 7, so that the closing cap 16 and the lighter 1 are made compact. It became possible.

That is, it is necessary to set the fulcrum position of the closing cap 16 so that the inner surface of the closing cap 16 does not hang on the tip of the combustion wick 6 and the tip of the wick holder 7 during the opening and closing operation. In a lighter that uses a combustion core made of, for example, unbound glass fiber without reducing the thickness of the combustion core 61a, the fulcrum of the closing cap 16 and the combustion core 6
The distance from the center is relatively long and the rotation arc is set large, so that the overall structure of the closing cap 16 and the lighter increases (see FIG. 7). In order to simply shorten the distance between the fulcrum and the combustion wick 6, it is possible to increase the inner diameter of the closed portion of the closing cap 16. However, the closing cap 16 is located at a position away from the outer diameter of the wick holder 7. As a result, the distance between the combustion core 6 and the file wheel 13 becomes long in order to avoid interference with the file wheel 13, but in the present invention, compactness can be achieved as described above. .

<Second Embodiment> Lighter 1 of this example
As shown in FIG. 2, the combustion wick 6 is formed of a material different from that of the first embodiment.

The combustion portion 63 of the combustion core 6 of this example is formed into a round bar shape by a porous ceramic sintered body, contains open cells (capillary passages) inside, and has a thin tip portion. The upper end of the combustion portion 63 is mounted so as to protrude by a predetermined amount (3 mm) from the tip of the core holder 7, and the size of the combustion flame H is determined by setting the protrusion amount, diameter, and the like. For example, it is provided with an outer diameter of 3.0 mm and a length of 10 mm.

On the other hand, the suction part 62 whose tip part is in contact with the lower end part of the combustion part 63 is formed in a round bar shape from a porous material made of a sintered body of polyethylene powder as described above. An engagement groove 63c is provided on the outer periphery of the upper portion of the combustion portion 63, and a projection 7b directed toward the center of the upper end portion of the core holder 7 is engaged with and held by the engagement groove 63c. At the same time, by screwing the core holder 7 to the upper lid 4, the lower end of the combustion part 63 is joined and integrated with the upper end of the suction part 62.

The closing cap 16 for sealing the protruding portions of the combustion wick 6 and the wick holder 7 has a sealing member 20 attached to the tip of the closing portion.
The seal member 20 is provided so as to be pressed against the upper lid 4 on the outer periphery of the core holder 7 to seal when the closing operation of the seal 6 is performed. The other parts are formed in the same manner as in the first embodiment, and the same components are denoted by the same reference numerals and description thereof will be omitted.

<Third Embodiment> Lighter 1 of this example
As shown in FIG. 3, only the shape of the tip of the combustion wick 6 differs from that of the second embodiment, and the other components are provided in the same manner.

That is, the combustion portion 63 of the combustion wick 6 is formed into a round bar shape by a porous ceramic sintered body, and the tip end of the portion opposite to the fulcrum pin 17 of the closing cap 16 is removed in an inclined state. Thus, interference of the combustion portion 63 with the opening and closing rotation of the closing cap 16 can be avoided so that the two can be arranged close to each other.

<Fourth Embodiment> FIGS. 4A to 4E show various examples of the sealing structure of the combustion portion of the combustion wick 6 with the closing cap 16. FIG.

(A) shows a case where the core holder 7 is provided on the upper surface of the upper lid 4.
A seal member 25 is arranged on the outer periphery of the
This is a structure in which the distal end portion 16b of the closing cap 16 is pressed against and pressed to seal.

(B), an annular projection 4b is provided on the outer periphery of the core holder 7 on the upper surface of the upper lid 4, while a ring-shaped sealing member 26 is attached to the closed end 16b of the closing cap 16, and the annular projection 4b is attached to the annular projection 4b. It is a structure that obtains sealing properties by pressing.

(C) shows a sealing structure similar to that of FIG. 1 described above, in which an O-ring 27 is mounted horizontally on the outer periphery of the lead holder 7, and the inner peripheral surface of the closing cap 16 is brought into contact with the O-ring 27 to improve sealing performance. It is a structure to get.

FIG. 5D shows a structure in which a sealing member 28 is provided in an annular shape on the outer periphery of the leading end of the lead holder 7, and the sealed end 16 b of the closing cap 16 is pressed to obtain a sealing property.

(E), an annular projection 7c is provided on the tip end surface of the core holder 7, a sealing member 29 is attached to the closed end 16b of the closing cap 16, and this is pressed against the annular projection 7c to obtain a sealing property. Structure.

<Fifth Embodiment> FIGS. 5A to 5F
And a structure for joining or locking the combustion portion and the suction portion of the combustion wick 6 and the combustion wick 6 together with the wick holder 7 to the upper lid 4 of the fuel tank.
Various examples of the structure to be attached to are shown.

(A), after inserting the combustion part 63 of the combustion wick 6 and the head of the suction part 62 into the wick holder 7, the lower end of the wick holder 7 is joined by caulking, and This is a structure in which a joining screw 7a on the outer peripheral portion is screwed to a screw hole 4a provided in the upper lid 4 via an O-ring 18 and attached to the bottom.

(B) is the same as that shown in the second embodiment, and the lower end of the lead holder 7 is not caulked.
The lower end of the head of the suction head 62 is locked and held by the bottom of the screw hole 4a of the upper lid 4, and the wick holder 7 is tightened via an O-ring 18 from above, thereby joining the combustion part 63 to the suction head 62 and It is a structure to be attached to.

FIG. 9C shows a case where the joining screw is not formed on the core holder 7 but is attached via the fastening ring 33. The upper engaging portion 33a of the fastening ring 33 is engaged with the step 7d of the core holder 7. Then, the joining screw 33b on the outer periphery of the fastening ring 33 is screwed into the screw hole 4a of the upper lid 4 and attached.
The fixing of the combustion wick 6 to the wick holder 7 is the same as in (A).

In (D), the attachment of the wick holder 7 to the upper lid 4 has the same structure as in (C), and the fixing structure of the combustion wick 6 has the same structure as in (B), and these are combined. .

(E) shows a groove 7 on the outer periphery of the core holder 7.
On the other hand, the upper lid 4 is provided with a locking projection 4e provided with elasticity, and the bottom of the core holder 7 is press-fitted into the upper lid 4 so that the tip of the locking projection 4e is locked and attached to the concave groove 7e. It has a structure, and the holding of the combustion wick 6 is the same as in the above (A).

In (F), the attachment of the wick holder 7 to the upper lid 4 has the same structure as in (E), and the fixing of the combustion wick 6 has the same structure as in (B), and the two are combined.

As the liquid fuel to be injected into the fuel storage unit 5 in the lighter 1 and other burning appliances described above, in the case of alcohol fuel, alcohols of lower monohydric alcohol such as methyl alcohol, ethyl alcohol or propyl alcohol are used. Hexane, heptane, octane, which has the same boiling point as this main component as the main component,
It is preferable to add one or more hydrocarbon compounds based on saturated hydrocarbons such as nonane, cyclohexadiene and cycloheptene. This is because the combustion flame becomes colorless only with alcohol fuel, but the addition of the saturated hydrocarbon causes the tip of the combustion flame to turn yellow-orange due to the red heat of free carbon. In addition, at least one of heptane, octane and nonane
A liquid fuel having a seed composition may be used. Further, liquid fuel using benzene hydrocarbon may be used.

On the other hand, examples of the burning apparatus for liquid fuel include an igniter such as a torch and a lantern, and a lighting apparatus in addition to a lighter for a smoking article.

Next, an experimental example will be described in which the lighter 1 incorporating the combustion wick 6 as described above was used to measure the change in the form of the combustion flame in the repeated use of ignition.

In this experiment, as the product of the present invention, a lighter 1 was used in which a combustion core 6 obtained by fusing and binding a tip part 61a of a combustion part 61 of the first embodiment and a tip holder 7 having a flat tip part were held. I do. Further, as a comparative example, a lighter in which the tip of the combustion part 60 as shown in FIG. 7 is not fused and bound, and the tip holder of the first embodiment is held by the flat core holder 7 is used. ing.

Then, the closing caps 16 of both lighters are opened, and the rotary filer 13 is operated to ignite the combustion wick 6 and burn for a predetermined time. Then, the closing cap 16 is closed to close the combustion wick 6 and extinguish the fire. This is an observation in which the morphological change of the combustion flame H is observed.

In the lighter of the comparative example, when used repeatedly, as shown in FIG. 7, the tip of the burning part 60 of the burning wick 6 spreads, and the glass fiber at the leading end of the burning part 60 becomes 6 mm in diameter (initial diameter 3 mm). Accordingly, the shape of the combustion flame H has a flame length of 30 mm, whereas the flame width has expanded to 12 mm (at a position 3 mm from the lower end of the flame). When touched, the rotating file 13 was heated and heated.

On the other hand, in the lighter according to the present invention,
Even after repeated use, as shown in FIG.
No change was found in the tip shape of No. 1 and the shape of the combustion flame H, and the rotating file 13 was not touched by the flame.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view of a lighter as an example of a liquid fuel combustion device incorporating a combustion wick according to a first embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view of a lighter as an example of a liquid fuel combustion device incorporating a combustion wick according to a second embodiment of the present invention.

FIG. 3 is a schematic cross-sectional view of a lighter incorporating a combustion wick according to a third embodiment of the present invention.

FIG. 4 is a cross-sectional view of an essential part showing an example of a sealing structure of a combustion core with a closing cap.

FIG. 5 is a cross-sectional view of a main part showing an example of a structure for holding a combustion core and a structure for attaching the combustion core to an upper lid;

FIG. 6 is an explanatory diagram showing a fusion bundling process of a tip portion of a combustion core using glass fiber.

FIG. 7 is a schematic cross-sectional view showing a change in the form of a combustion flame in a lighter as a comparative example in the experimental example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lighter (combustion appliance for liquid combustion) 5 Fuel storage part 6 Combustion core 61 Combustion part 61a Tip part 62,63 Suction part 7 Core holder 10 Ignition member 13 Rotating file 16 Closing cap F Glass fiber G Burner flame H Combustion flame

Claims (5)

[Claims] 1. A combustion wick that sucks up liquid fuel by a wicking portion by capillary action and burns in a combustion portion, an ignition member that ignites a combustion portion of the combustion wick, and a combustion portion of the combustion wick that is openably closed. A combustion wick for a liquid fuel, comprising a closing cap for volatilization prevention, wherein a combustion portion of the combustion wick is provided in a shape having a tapered end portion. 2. The device according to claim 1, wherein the closing cap is provided so as to be opened and closed by a fulcrum at one end, and a leading end of a combustion portion opposite to the fulcrum of the closing cap is removed. Combustion wick in liquid fuel combustion equipment. 3. A combustion wick for a liquid fuel combustion device, wherein the combustion wick is formed by melting and binding a tip portion of a combustion portion made of glass fiber into a shape pointed like a brush tip. 4. The combustion wick is formed by bundling glass fibers, heating and melting a portion of the wick with a high-temperature burner, and extending the melted portion to form a separate portion.
A combustion wick in the combustion device for a liquid fuel according to item 1. 5. The liquid fuel according to claim 1, wherein the combustion wick has a combustion portion made of a porous glass material having open cells or a sintered porous ceramic material formed in a tapered shape. Wicks in combustion appliances for household use.