WO1999034147A1 - Briquet a carburant liquide - Google Patents

Briquet a carburant liquide Download PDF

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Publication number
WO1999034147A1
WO1999034147A1 PCT/JP1998/005850 JP9805850W WO9934147A1 WO 1999034147 A1 WO1999034147 A1 WO 1999034147A1 JP 9805850 W JP9805850 W JP 9805850W WO 9934147 A1 WO9934147 A1 WO 9934147A1
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WO
WIPO (PCT)
Prior art keywords
combustion
wick
fuel
liquid fuel
fuel tank
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP1998/005850
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English (en)
Japanese (ja)
Inventor
Hideo Mifune
Masato Seki
Yasuaki Nakamura
Yukio Nozaki
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Tokai Corp
Original Assignee
Tokai Corp
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Filing date
Publication date
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Publication of WO1999034147A1 publication Critical patent/WO1999034147A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q2/00—Lighters containing fuel, e.g. for cigarettes
    • F23Q2/34—Component parts or accessories
    • F23Q2/44—Wicks; Wick guides or fastenings

Definitions

  • the present invention relates to an igniter, such as a lighter for a smoking article, provided with a combustion wick that uses a liquid fuel mainly composed of alcohol and sucks and burns the liquid fuel from a fuel tank by utilizing a capillary phenomenon. It relates to the structure of the combustion core part 3
  • each burner differ depending on the type of fuel used, and each burner has its own characteristics.
  • the fuel is a mixture of compounds having different boiling points, and the benzene component having a low boiling point volatilizes in the early stage of use when ignited to a combustion appliance, and is sequentially.
  • gasoline which shifts volatile components to higher boiling hydrocarbons, changing the fuel composition remaining in the combustion equipment according to the combustion time, and thereby causing a change in flame length.
  • benzene and gasoline have high volatility, and the combustion equipment that uses them requires a sealed structure that reduces volatilization from the fuel storage unit and the combustion wick. The fuel is volatilized and lost, the refueling frequency is high and cumbersome, and benzine and gasoline have a peculiar smell and may not be preferred.
  • the gas pressure 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 must have a pressure-resistant structure.
  • the flame length changes in response to the above-mentioned fluctuations in the gas pressure.
  • the gas pressure has the characteristic that it changes logarithmically with temperature, and there is a problem that the flame length greatly changes with temperature.
  • special design measures to compensate the temperature of the fuel supply mechanism of the combustion equipment are required, and the structure becomes complicated. It also becomes disadvantageous in terms of cost.
  • liquid fuel mainly composed of alcohol such as lower monohydric alcohol such as ethyl alcohol, methyl alcohol, and propyl alcohol is liquid at room temperature, has a relatively low vapor pressure, and is used for fuel storage.
  • a pressure-resistant container is not required, and the fuel tank and the combustion wick need to be hermetically sealed so that alcohol does not evaporate. This is advantageous in terms of simplification of the structure of combustion equipment and cost.
  • the continuous pores are formed by utilizing the surface tension of the liquid fuel.
  • a combustion wick is used, which sucks up the gaps of bundled fine fibers by capillary action and burns at the tip.
  • the above-mentioned combustion wick is made of a string-like twisted fiber, a bundle of glass fibers, or a combination of both, in which the glass fiber is wrapped with a cotton yarn to absorb the fuel, and a metal is used so that it cannot be unraveled.
  • the lower wicking part functions as a fuel wicker and burns at the upper burning part.
  • the initial flame length after ignition, the change in flame length, and the saturation flame depend on the material, dimensions and shape of the combustion wick. Since the lengths are different, it is necessary to configure the igniter to meet the required characteristics.
  • the combustion wick a cord-like material obtained by twisting fibers, a bundle of glass fibers, or a material using both of the above-mentioned conventional techniques is used, and furthermore, the combustion core
  • ceramic fiber squeezed into a thick plate, extruded into a rod, or floated it is conceivable to use ceramic fiber squeezed into a thick plate, extruded into a rod, or floated.
  • a heat-resistant fiber material made of glass fiber or bonbon fiber alone or a mixture thereof, and processed into an appropriate shape as a combustion core.
  • combustion wicks When these combustion wicks are used for igniters such as lighters for smoking equipment, a suction part for supplying the liquid fuel in the fuel tank to the combustion part, and a tip combustion part for burning the fuel sucked in contact with this part
  • a combustion wick that is made of a different material; and a suction part and a tip combustion part that are integrally formed using the material.
  • An integral combustion wick can be employed.
  • the combustion heats the burned portion of the wick, increasing the volatilization of fuel from the surface and increasing the flame length.
  • the temperature rise due to the combustion of the fuel on the surface of the wick becomes equilibrium with the progress of the combustion and stops, and the elongation of the flame length also saturates and stops, reaching the saturated flame length.
  • the fuel contained in the combustion portion of the combustion wick burns off from its surface, the fuel diffuses from the inside of the combustion wick to the surface, and the fuel in the fuel tank passes through the wicking portion of the combustion wick. It is sucked and replenished.
  • the fuel is consumed from the surface of the wick, the fuel is supplied from the inside of the wick, and the fuel is sucked and supplied from the fuel tank, the combustion continues in an equilibrium state and the flame length is stabilized. If the consumption of fuel from the surface of the combustion wick is not accompanied by the supply of fuel from the inside of the combustion wick, the flame length changes from the initial flame length, and an equilibrium state is established according to the fuel supply or the fire is extinguished.
  • the initial flame length immediately after ignition is as long as it appears, and in practical use this value is at least about 20 and then the flame length is reduced to 25 mm. It is necessary to satisfy the combustion conditions of as short as possible, within about 1 second for practical use, and 7 O mm or less for practical use so that the saturated flame length after ignition time does not become too long. preferable.
  • the flame length immediately after ignition is as long as possible and suitable for use as an igniter. It is desirable that the length of the saturated flame be as short as possible and that the length of the saturated flame be as short as possible.
  • the present invention has been made in view of the above circumstances, and has as its object to provide an igniter that uses a liquid fuel so that a combustion state suitable for a purpose of use can be obtained.
  • the igniter using the liquid fuel according to the present invention that has solved the above-mentioned problems mainly uses alcohol.
  • a batting is accommodated in a bottom portion, an upper space is formed in a fuel tank above the batting, and a partial surface of the combustion wick is exposed to the upper space of the fuel tank.
  • the combustion wick may be configured such that a wicking portion and a tip burning portion that are in contact with the batting are formed of different materials, so that the burning portion side material is exposed to an upper space of the fuel tank.
  • a gap leading to the upper space of the fuel tank can be provided around the material on the combustion portion side of the held wick, and can be exposed to the upper space.
  • the combustion wick has a lower suction fuel supply capacity of the liquid fuel in a suction portion below the liquid fuel than a suction combustion capability of the liquid fuel in a tip combustion portion.
  • the combustion core may be provided below the tip combustion portion at least in a portion exposed to the upper space of the fuel tank so that the liquid fuel suction / raising ability differs between the central portion and the outer peripheral portion.
  • the suction supply capacity of the liquid fuel from the suction portion to the tip combustion portion in the combustion wick is
  • It is set to 2.5 to 5.3 mg / sec, more preferably to 3.5 to 4.4 mgZsec.
  • the igniter such as a smoker lighter, must be designed so that the flame length immediately after ignition and the flame length at the beginning of ignition match the intended use.
  • the material, dimensions and shape of the combustion part at the tip of the combustion core must be specified.
  • heat-resistant fiber materials such as ceramic fiber, glass fiber, carbon fiber, etc. are singly or mixed together, or a small amount of binder or hardener is added to a thick plate. What was dried and solidified was cut into the required size and shape, or a small amount of binder and a hardening agent was added and extruded into a rod, extruded, dried and solidified, or the fiber was processed into a felt shape Cut and molded into the required shape for use.
  • Such a combustion wick can be formed so as to have micropores also on its side surface, and a part of the surface of the combustion wick is fixed to be exposed to a space in the fuel tank. If a sufficient space is provided around the exposed portion of the combustion wick inside, a suitable flame length can be obtained after ignition of the combustion wick by the size and shape of the protruding portion of the combustion wick from the wick holder immediately after ignition and at the initial stage. For the subsequent continuation of combustion, the amount of fuel supplied from the fuel tank to the combustion portion of the wick can be regulated, and the saturated flame length can be controlled.
  • the amount of fuel supplied from the fuel tank to the front end combustion portion of the combustion wick is regulated by exposing a part of the surface to the upper space in the fuel tank, thereby achieving a saturated flame. It controls the length.
  • the igniter such as a smoking article lighter
  • the dimensions of the tip of the combustion wick are determined by the material constituting the combustion wick so that the flame length immediately after ignition and the flame length can be extended to the required flame length early after that.
  • the fuel consumption is also determined by that part.
  • the combustion wick in the present invention as described above is one in which the fuel suction portion and the tip combustion portion are integrally formed of the same material, or a material in which the fuel suction portion and the combustion portion are different. And are formed by connecting both.
  • the saturation flame length could be set low by using a material with a low liquid fuel suction capacity as the material of the combustion wick. At that time, if the material of the combustion wick was different between the tip combustion part and the wicking part, the saturated flame length could be set low by selecting a material with low liquid fuel wicking capacity for the wicking part. . Similarly, for a combustion wick having an integral structure or a separate structure, the saturated flame length could be reduced by designing the cross-sectional shape of the suction portion small. The relationship between the material of the wick and the suction capacity will be described in detail in Experimental Example 1 below.
  • the wicking portion of the combustion wick has a two-layer structure consisting of an outer peripheral portion and a central portion.
  • liquid fuel mainly composed of alcohol examples include, for example, a lower monohydric alcohol such as methyl alcohol, ethyl alcohol or propyl alcohol, and a saturated hydrocarbon such as hexane or heptane for coloring the flame. A mixture is used.
  • a batting containing a liquid fuel mainly composed of alcohol is accommodated in the bottom of the fuel tank, and an upper space is formed in the fuel tank above the batting.
  • the liquid fuel is sucked up by capillary action and comes into contact with the fuel, and a part of the surface of the combustion wick, which is burned at the tip combustion part, is exposed to the upper space of the fuel tank.
  • the air enters and regulates the fuel supply capacity, so that the form of the tip burning portion of the combustion wick is ignited and the combustion is started.
  • the subsequent fuel supply is low and the increase in the saturated flame length can be suppressed, and the desired combustion as a igniter such as a lighter for smoking equipment as a whole
  • the characteristics can be ensured by a simple structure.
  • FIG. 1 is a schematic cross-sectional view of a smoking article writer as an example of an igniter according to the first embodiment of the present invention
  • FIG. 2 is a schematic diagram of a combustion core portion of the igniter according to the second embodiment
  • FIG. 3 is a schematic diagram of a combustion core portion of the igniter of the third embodiment
  • FIG. FIG. 5 is a schematic diagram of a combustion core portion of an igniter according to the fifth embodiment
  • FIG. 5 is a schematic diagram of a combustion core portion of an igniter according to a fifth embodiment
  • FIG. 6 is an ignition diagram of the sixth embodiment.
  • Fig. 7 is a graph showing the relationship between fuel consumption and saturated flame length in Experimental Example 1
  • Fig. 8 compares the suction capacity of each combustion core material in Experimental Example 2.
  • Fig. 9 is a graph showing the combustion characteristics of an integrated wick made of various materials in Experimental Example 2.
  • Figure 10 is a graph showing the combustion characteristics due to the change in the diameter of the combustion core suction part in Experimental Example 3.
  • Fig. 11 is a graph showing the combustion characteristics according to the change in the exposure length of the combustion core combustion part in Experimental Example 4.
  • FIG. 12 is a graph showing the combustion characteristics depending on the change of the exposure position in Experimental Example 5
  • FIG. 13 is a graph showing the combustion characteristics of the combustion wick in the third embodiment.
  • FIG. 1 showing a schematic sectional structure of the smoking article for writer one as an example of ignitor using liquid fuel in FIG. 1
  • a bottomed cylindrical fuel tank 2 the inside of the fuel tank 2 Is filled with a filling 3 made of fibrous material that impregnates and holds the liquid fuel.
  • An upper lid 4 is fixed to the upper part of the fuel cell, and a fuel storage unit 5 for storing liquid fuel is formed.
  • the filling 3 is filled in the bottom of the fuel tank 2 to form an upper space 2a.
  • the fuel tank 2 is a molded article made of polypropylene and has an inner volume of 5 cm 3 .
  • the batting 3 is made by pushing a 6-denier polypropylene fiber into the fuel tank 2 at a density of 0.05 g Zcm 3 , and the batting 3 is mixed with ethyl alcohol 95 wt / o, n-hexane 5 4 g of liquid fuel mixed with wt% is impregnated and stored.
  • a metal core holder 17 is fixedly inserted through the upper lid 4 vertically into the fuel tank 2.
  • a rod-shaped combustion core 6 is mounted on the core holder 17 in the vertical direction.
  • Combustion wick 6 is formed separately from different materials in the combustion part 61 at the tip and the suction part 62 below, so that the lower end of the combustion part 61 and the upper end of the suction part 62 are in contact with each other. It is installed in a state.
  • the combustion portion 61 of the combustion wick 6 is formed of ceramic fiber, protrudes from the upper end of the wick holder 17 by a predetermined amount, and has a lower end lower than the lower end of the wick holder 17 in the fuel tank 2. It is held in a state where it protrudes.
  • the wicking portion 62 of the combustion wick 6 is formed of acrylic fiber, and the lower portion is inserted into the batting 3 to come into contact with the batting 3 to cause the liquid fuel impregnated in the batting 3 to undergo capillary action.
  • the upper end protrudes from the upper surface of the batting 3 and contacts the lower end of the combustion portion 61 in the upper space 2a to supply the sucked liquid fuel to the combustion portion 61. Then, the tip of the wick protruding above the wick holder 7 of the combustion portion 61 of the wick 6 is ignited to generate flame and burn.
  • the combustion part 61 is formed by adding a small amount of an organic binder and a curing agent to a ceramic fiber obtained by fiberizing a raw material mainly composed of alumina and silica having a thickness of 2.8 ⁇ to reduce the packing density of the fiber.
  • 0.16 g Zcm 3 is formed into a plate shape, cut and cut into a 3 ⁇ X 4 banded rectangular bar with a length of 15 tnm. Is inserted into the wick holder 17 with a diameter of 4.0 mm, an outer diameter of 5.0 mm ⁇ , and a length of 7.0 mm. 2
  • the upper end of this combustion part 6 1 is the upper end of the wick holder 17. From the lower end of the core holder 1 with an exposed length A of 3 mm.
  • the outer peripheral portion is exposed in the upper space 2 a of the fuel tank 2.
  • the wicking portion 62 is formed by adding a binder and a curing agent to acrylic fibers having a fiber thickness of 3 deniers, bundling them, and solidifying them in a rod shape.
  • the porosity after the fixing molding is 60%. It has an outer diameter of 3.4 mm and a length of 37 mm. ⁇ length in the batting 3 is 3 O tiun, ⁇ the upper seven ⁇ out portion than the contact portion between the filling 3 is exposed to the upper portion space 2 a
  • an ignition member 10 is disposed on the upper lid 4 so as to face the tip of the combustion portion 61, and the ignition member 10 ignites vertically in a bracket 11 fixed to the upper lid 4.
  • a stone 12 is inserted, and a rotating file 13 is provided on the upper lid of the bracket 11.
  • the tip of the igniter 12 is pressed around the rotating file 13 by the urging force of the stone pressing spring 14. It is provided so that sparks fly toward the combustion wick 6 by the rotating operation of the rotating file 13.
  • a volatilization-preventing closure cap 16 is provided to cover the combustion portion 61 together with the projection of the core holder 7 so as to be openable and closable.
  • the closure cap 16 is provided at one end of the upper surface of the upper lid 4 in the fuel tank 2. It is pivotally supported by a pin 17.
  • the inner surface of the closing cap 16 is provided with an inner lid 16a that surrounds the outer peripheral portion of the core holder 17 and covers and seals the tip of the combustion portion 61.
  • an O-ring 19 is horizontally attached to the outer peripheral root portion of the core holder 17, and is pressed against the inner peripheral surface of the inner lid 16a to improve the airtightness.
  • a top plate 18 is provided on the upper surface of the upper lid 4.
  • the gap formed between the circular inner peripheral surface of the core holder 17 and the rectangular outer peripheral surface of the combustion portion 61 is a through hole that communicates the upper space 2a in the fuel tank 2 with the outside. Functions as a stoma.
  • the change in flame length when burning continuously from ignition was measured.
  • the flame length immediately after ignition was 28 mm, and the flame gradually increased from there.
  • the flame length increased and the flame length became 43 strokes about 30 seconds after ignition, and then the flame length did not change and became equilibrium (see Fig. 11)-In this way, securing the initial flame length and saturation flame
  • the flame length change characteristics that satisfy the required combustion conditions as a smoking article lighter were obtained.
  • FIG. 2 a portion of a combustion wick is schematically shown in FIG. 2, and the combustion wick 6 in the example of FIG. 1 is integrally formed with a suction portion thereof using the same ceramic fiber as that of the combustion portion 61. is there.
  • the length of the integral wick 6 is 52 mm, and the length of the exposed portion of the wick 6 in the upper space 2 a of the fuel tank 2 is about 10 mm.
  • FIG. 3 is an example in which the shapes of the combustion wick 6 and the wick holder 7 are different from those of the above embodiment.
  • the other parts are formed in the same manner as in the writer of the first embodiment, and a description thereof will be omitted.
  • the combustion wick 6 is made of a different material for the combustion portion 6 1 and the wicking portion 6 2, and the wicking portion 6 2 has different materials at the center portion 6 2 a and the outer peripheral portion 6 2 b 2 It is installed in a heavy structure.
  • the combustion portion 61 is made of the same ceramic fiber as in the first embodiment, has a cross section of 3 ram ⁇ 4 mm and a length of 12 mm.
  • the suction portion 62 has a central portion 62a formed of acryl fibers in the same manner as described above, and an outer peripheral portion 62b is formed of a sintered polyethylene powder.
  • the central part 62a is formed of acrylic fiber having a fiber thickness of 3 denier and has an outer diameter of 2.5.
  • the outer peripheral portion 62b is formed by sintering polyethylene powder (particle diameter: 70 to 200 mesh) at 170 ° C for 10 minutes, and its outer diameter is 4.0 mm0. The length is 37 mm;
  • the core holder 7 is formed such that the upper inner diameter is larger and the lower inner diameter is smaller than this.
  • the outer diameter is 5.0 hidden ⁇ and the length is 10 mm with respect to the combustion wick 6 having the above dimensions, and the inner diameter is 7 mm from the upper end surface. Is formed at 4.0 o.d. and the length of the three strokes from the lower end to the lower end is 3.5 mm 0.
  • the double-structured suction portion 62 is inserted and fixed from below into the lower inner diameter portion of the lower portion, and the lower end portion of the combustion portion 61 is inserted from above.
  • the upper end of the burning portion 61 protrudes from the upper end surface of the core holder 17 with a projection length of 5 strokes, and the protruding portion is ignited. Burned. Also, the surface of the outer peripheral portion 62 b of the suction portion 62 below the lower end of the core holder 17 is exposed to the upper space 2 a of the fuel tank 2.
  • the central portion 62a made of acryl fibers has a large liquid fuel sucking ability
  • the outer peripheral portion 62b made of a polyethylene sintered body has a low sucking capability
  • the outer peripheral portion 62 2b is exposed to the upper space 2a, so that the suction capacity is reduced, and the overall suction capacity is lower than that of the first embodiment.
  • FIG. 4 shows still another embodiment of the combustion wick 6.
  • the other parts are formed in the same manner as the writer of the first embodiment, and the description thereof is omitted.
  • the combustion wick 6 of this example is made of a different material for the combustion portion 6 1 and the wicking portion 6 2, and the wicking portion 6 2 has a thinner portion in contact with the batting 3 at the lower portion and a smaller cross-sectional area. It is provided as follows. By reducing this cross-sectional area, the amount of liquid fuel supplied from the batting 3 by the wicking portion 62 along with the exposure to the upper space 2a is regulated, and the amount of liquid fuel supplied to the combustion portion 61 is reduced. It is configured to suppress the saturated flame length.
  • the wicking portion 62 of the combustion core 6 is formed by bundling acrylic fibers, and has an overall length of 37 mm and an outer diameter of 3.4 mm from the upper end portion of 3.4 nm. mm 0, a length of 32 mm from the lower end is provided at an outer diameter of 1.2 mm ⁇ , and this thin portion is inserted into a batting 3 of 30 mm length and fixed.
  • the shape of the core holder 17 is the same as that of the third embodiment, the inner diameter of the upper part is large, and the inner diameter of the lower part is small.
  • the lower end and the upper end of the suction portion 62 are inserted and fixed so that their respective end surfaces are in contact with each other.
  • the upper end of the combustion portion 61 protrudes from the upper end surface of the lead holder 17 by a projection length of 5 mm, and the protruding portion is ignited and burned. Further, the surface of the wicking portion 62 at a portion below the core holder 7 and above the batting 3 is exposed to the upper space 2a.
  • FIG. 5 shows still another embodiment of the core holder 17.
  • the other parts are formed in the same manner as the writer of the first embodiment, and the description is omitted.
  • the combustion core 6 is made of a different material for the combustion part 61 and the suction part 62.
  • the combustion part 61 is made of ceramic fiber, has a cross-sectional shape of 3 mm X 4 mm and a length of 11 mm.
  • the wicking portion 62 is made of acrylic fiber, has an outer diameter of 3.4 mm and a length of 37 mm, and is inserted into a batting 3 having a length of 30 mm.
  • an opening 7a is formed at an intermediate portion thereof to open to the upper space 2a of the fuel tank 2 in the lateral direction.
  • the outer diameter of the core holder 17 is 5.0 rigid 0 and the length is 10 mm, and its inner diameter is 4.0 hidden 0 from the upper end surface to below 4.0 and 0 below.
  • a length of 4 mm to the end face is formed with an inner diameter of 3.0 mm ⁇ :
  • a round opening 7 a having a diameter of 3.0 30 and a center of a position of 4.5 mm from the upper end are formed by two holes. Power stations are provided.
  • the sucking portion 62 is inserted and fixed to a portion having a small inner diameter at a lower portion with a length of 5 mm from below, and a lower end portion of the combustion portion 61 from above.
  • the upper end of the combustion portion 61 protrudes from the upper end surface of the core holder 17 by a projection length of 5 mm.
  • the projecting portion is ignited and burned, and a part of the burning portion 61 is exposed to the upper space 2a of the fuel tank 2 via the opening 7a.
  • a suction part 62 is exposed to the upper space 2a below the core holder 7.
  • FIG. 6 shows still another embodiment of the lead holder 17.
  • the other parts are formed in the same manner as the writer of the first embodiment, and the description is omitted.
  • the combustion core 6 is made of a different material for the combustion part 61 and the suction part 62.
  • the combustion part 61 is made of ceramic fiber, has a cross-sectional shape of 3 mm X 4 mm and a length of 12 mm.
  • the wicking section 62 is similarly constructed of acrylic fiber, is formed with an outer diameter of 3.4 and a length of 37 mm and is inserted into a 30 thigh length batting.
  • the core holder 17 is formed such that the lower portion inside the fuel tank is formed large, and a gap 7 b opening to the upper space 2 a of the fuel tank 2 is formed.
  • the outer diameter of the core holder 17 is 5.0 mm from the upper end, the inner diameter is 4.0 ⁇ 0, and the inner diameter is 4.0 ⁇ 0. Marauder ⁇ , inner diameter is 5.4 mm (i).
  • a 1 mm X 1 ⁇ X 1 ⁇ core holding part 7 c is attached to four places on the inner peripheral surface of the lower end part, and the lower part is open and the other part is open for ventilation except for this core holding part 7 c It is.
  • the combustion part 61 is inserted into the core holder 17 as described above so that the protruding length becomes 5 mm from the upper part, and the lower end part of the combustion part 61 is enlarged in inner diameter of the core holder 7. It protrudes from the gap 7 b of the part by a length of 3 exposed portions. Further, the upper end of the suction portion 62 is inserted into the lower end of the core holder 17 by a length of 2 mm, the upper end contacts the lower end of the combustion portion 61, and the outer peripheral portion is It is fixed by the core holding portion 7c. The protruding portion of the combustion portion 61 is ignited and burned, and the lower end portion and the suction portion 62 of the combustion portion 61 are exposed to the upper space 2 a of the fuel tank 2.
  • Wick used is a material obtained by cutting the 3 mm thick plate material obtained by forming ceramic fibers into packing density 2 0 O mgZcm 3 Fiber one size 2. 8 mu m to 4 mm wide and burning section, as shown in FIG. 1
  • the ignition was performed by changing the length of the protruding part of the combustion part from the core holder, and the saturated flame length after ignition and the fuel consumption per unit time were measured from the weight change.
  • Figure 7 shows the relationship between the saturated flame length and fuel consumption.
  • the fuel supply amount is 2.5 mg / sec
  • the fuel supply amount is 3.5 mg / sec.
  • fuel supply amount when placing flame length and 5 0 hidden is 4.
  • 4 mg / sec N fuel supply amount when the saturated flame length 6 0 mm is 5.
  • the above range that is, the saturated flame length is preferably 30 to 60 mm
  • the fuel supply amount corresponding thereto is 2.5 to 5.3 mg / sec. ⁇ 50 orchids, corresponding to a fuel supply of 3.5-4.4 mg / sec.
  • the suction part of the combustion wick When the above-mentioned fuel supply amount is required for the suction part of the combustion wick, its material is determined by the suction capacity of the liquid fuel and its cross-sectional area. In the case of the above cigarette lighter, if the cross-section of the wicking part is circular due to the design structure, a diameter of 2 to 5 o ⁇ is appropriate, and the cross-sectional area is 3 to 20 ⁇ 2 .
  • the saturation flame length can be determined by setting the material and structure in consideration of the suction capacity of the wicking part of the core.
  • the value of the saturated retention amount is related to the initial flame length after ignition of the combustion wick and the initial flame elongation. Depends on fuel supply.
  • Fig. 8 shows the relationship between the elapsed time after immersing the lower end of the wick of each material in liquid fuel and the suction height.
  • Figure 9 shows the results of measuring the change in flame length after ignition of each combustion wick.
  • the porous material polyethylene core obtained by sintering polyethylene powder in Fig. 8 can be used.
  • the suction time up to 50 mm is 174 seconds.
  • the amount of retained fuel is low, and as shown in Fig. 9, it is difficult to obtain the initial flame length, and at the same time, the suction capacity is low. It is difficult to continue combustion. Therefore, if the initial flame length is set to about 25 to 30 mm, the saturated flame length is about 4 Omm.
  • FIG. 10 shows the measured combustion characteristics when the temperature was changed in the range of ⁇ 0.
  • the suction capacity of the liquid fuel in the suction part was measured by the same measurement method as in Experimental Example 2, and the relationship with the time to reach the suction height of 5 Omm was examined.
  • the material is the same, it is constant regardless of the diameter of the suction part.
  • the change in the diameter of the suction part changes the fuel supply to the combustion part, and the saturated flame length changes accordingly.
  • the wicking part made of acrylic fiber has a high wicking ability, it is possible to supply fuel in proportion to the fuel consumption in the burning part if there is a certain cross-sectional area.
  • the saturated flame length does not change with the increase of the flame length.
  • the diameter must be smaller than this.
  • the saturated flame length was about 55 mm.
  • the above exposure length A is 3 mn! In the case of 11 O mm, the saturated flame length could be reduced to about 45 mm.
  • This wick is for the burning portions that cut the 3 mm thick plate material obtained by forming the ceramic fibers of the fiber one size 2. 8 mu m in packing density 2 0 0 mg / cm 3 in the width 4 mm, its When the surface is exposed to the upper space of the fuel tank and comes into contact with air, air is taken into the surface layer, and the resistance to suction of liquid fuel becomes higher than that of the inner layer. This is due to the reduced liquid fuel suction area.
  • This experiment compared the exposure in the combustion part and the exposure in the suction part when exposing the surface part of the combustion wick to the upper space of the fuel tank.
  • the effect of suppressing the saturated flame length is higher when exposing the material of the burning portion. This is because the suction capacity of the material of the combustion part is originally lower than that of the material of the suction part, and the saturated flame length is reduced due to the remarkable influence of the surface exposure.
  • the fiber diameters of the glass fiber and the ceramic fiber are represented by numerical values, which show average representative dimensions. On the other hand, the actual dimensions have a distribution, and the displayed values are representative expressions. Thick and thinner types are mixed.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lighters Containing Fuel (AREA)

Abstract

Cette invention concerne un briquet à carburant liquide qui permet de garantir les caractéristiques de combustion répondant aux besoins d'un briquet. Le carburant liquide est aspiré par une mèche de combustion puis brûlé au niveau d'une partie d'extrémité libre de la mèche. On limite la longueur de flamme de saturation tout en conservant une longueur de flamme initiale, après quoi on augmente la longueur de ladite flamme. Un coton interne (3), qui est imprégné d'un carburant liquide comprenant essentiellement de l'alcool, est stocké dans la partie fond d'un réservoir de carburant (2), un espace supérieur (2a) étant aménagé dans ledit réservoir (2). La mèche de combustion (6) comprend une partie aspiration (62) qui entre en contact avec le coton interne (3) de manière à aspirer le carburant liquide par effet capillaire et à le brûler au niveau d'une partie de combustion (61). Une partie d'une surface de la mèche de combustion (6) se trouve exposée dans l'espace supérieur (2a), ce qui permet de restreindre la capacité d'alimentation en carburant.
PCT/JP1998/005850 1997-12-25 1998-12-24 Briquet a carburant liquide Ceased WO1999034147A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP9/356814 1997-12-25
JP35681497A JPH11182846A (ja) 1997-12-25 1997-12-25 液体燃料を用いる着火器

Publications (1)

Publication Number Publication Date
WO1999034147A1 true WO1999034147A1 (fr) 1999-07-08

Family

ID=18450914

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1998/005850 Ceased WO1999034147A1 (fr) 1997-12-25 1998-12-24 Briquet a carburant liquide

Country Status (2)

Country Link
JP (1) JPH11182846A (fr)
WO (1) WO1999034147A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5792620A (en) * 1980-11-28 1982-06-09 Fukuo Iwabori Liquid fuel lighter
JPH10122566A (ja) * 1996-10-24 1998-05-15 Tokai:Kk 液体燃料用燃焼器具における燃焼芯

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5792620A (en) * 1980-11-28 1982-06-09 Fukuo Iwabori Liquid fuel lighter
JPH10122566A (ja) * 1996-10-24 1998-05-15 Tokai:Kk 液体燃料用燃焼器具における燃焼芯

Also Published As

Publication number Publication date
JPH11182846A (ja) 1999-07-06

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