MXPA99000833A - Liquid fuel burning device - Google Patents

Abstract

A liquid fuel burning device comprising a wick for sucking and burning a liquid fuel contained in a fuel tank by capillarity and a vent passage which is provided in a portion other than a fuel passage used by the wick and allows communication between an interior of the fuel tank and the outside air at least during combustion.

Description

LIQUID FUEL LIGHTER DESCRIPTION OF THE INVENTION The invention relates to the structure of a lighter or other liquid fuel burner that uses alcohol as fuel or the like and is equipped with a wick for sucking and burning a liquid fuel. In particular this invention relates to a peripheral wick structure to obtain a desired burn state in the burner (e.g. a cigarette lighter) torch, torch or other producer for fire or lighting, lamp or the like) which uses a fuel liquid such as alcohol, a benzene hydrocarbon or a petroleum hydrocarbon. An alcohol fuel, such as ethyl alcohol, a benzine fuel of the petroleum benzine type or a liquid gas fuel such as butane gas or propane gas as a fuel for a cigarette lighter is generally used as a fire-fighting device. illuminate, torches, lamp or other burner. The ease of use and structural design of such burners differs depending on the kind of fuel used, and each has its own characteristics. In the case of a liquid gas fuel, for example, the gas pressure is high in the usual temperature range of the burner and the storage tank the fuel has to have a pressure resistant structure. Furthermore the length of the fiama changes with the variation of the gas pressure and since it is a characteristic of the gas pressure to vary greatly with the temperature, a large change in the flame length with the temperature becomes a particular problem. In order to reduce the variation of flame length, the fuel supply mechanism of the burner requires a special design to counteract the temperature, which complicates the structure and is disadvantageous from the point of view of cost. In contrast since a liquid fuel such as alcohol fuel at ordinary temperatures in a liquid and also has a relatively low vapor pressure, does not require a pressure resistant container in the fuel storage section and as such, simplifies the burner structure and it is advantageous from the aspect of cost. Also in the liquid fuel burner, the means used to supply the liquid fuel from storage to the flame producing section is generally a wick that uses the surface tension of the liquid fuel to suck it through fine continuous holes or fine voids between fibers braided by the effect of capiíaridad and burned n the top tip of it.

Specifically, the wick used to pull up the fuel in a strip obtained by the twisting of fibers, containing bonding fibers, both of which are used with glass fibers encased in cotton threads and an interweaving of thin metal wires to avoid disintegration, or the like, whose lower end part functions to suck the fuel to be burned in the upper end tip portion. However, the burner that uses such a wick has problems because the liquid fuel leaks through the wick because of the difference between the internal pressure of the fuel tank that holds the liquid fuel and the external pressure and that the phenomenon of attracting outside air. Specifically after pulling up and the combustion of alcohol or other liquid by the wick, which has been initiated by ignition, the liquid fuel in the wick is consumed in the flame producing section at the tip of the wick and the fuel Liquid to maintain combustion is pulled up from the tank and supplied to the section where the flame is produced. The length of the flame varies until a balance is obtained between the amount of fuel consumed in the flame section and the amount of fuel that is pulled from the tank and delivered to the flame section.

When the burner is a fire lighter like a cigar producer, the fiama preferably stabilizes in the size of the fire placed as soon as possible after the ignition. For this the suction section of the wick should have the highest suction capacity of liquid fuel, paying attention to prevent a pressure differential between the tank and the external air to be present to ensure that the outward flow of the liquid fuel from the tank does not produce a state of reduced pressure that prevents suction by the suction section of the wick. On the other hand, as far as the opposite case of high pressure produced in the fuel tank is concerned, care must be taken to ensure that the liquid fuel stored in the tank does not leak to the outside through the passages formed in the wick, particularly to ensure that the leakage of liquid fuel does not occur in an ignition device that is kept in the pocket or the like. Thus, when there is a difference between the internal pressure of the fuel tank and the external pressure due to the decrease in fuel through use or due to a change in the temperature immediately near or at room temperature, the liquid fuel burner can become inconvenient to use, this is to experience a leak of liquid fuel through the wick when the pressure The inside of the tank grows and experiences ignition failure when the internal pressure of the fuel tank becomes so low that external air is sucked through the wick. In addition, the suppression of the evaporative dispersion? The liquid fuel from the wick of a burner using the previous wicks is important to increase the service time, (number of uses), so it is also preferable to make all the compact configuration. vaporization from the wick is prevented by covering the portion of the wick alone or the entire top portion including the wick with a hood to seal the wick and suppress vaporization during periods of one use. This is particularly effective when the cover is made by causing the hood to oscillate along an upper arch, because the need to provide the seal portion in accordance with the rotation locus results in an increased distance between the wick and other components. such as the ignition device, making it difficult to properly secure the seal and a compact configuration. Particularly when an ignition wheel is used, the separation between the wick and the wheel degrades the execution of the ignition and decreases the quality of the product. In view of these circumstances, the invention aims to provide a liquid fuel burner that allows a rapid elimination of the pressure difference between the inside and outside of the fuel tank. The invention achieves the proposed task to provide a liquid fuel burner comprising a wick for burning liquid fuel pulled upwards from a fuel tank, characterized in that it is provided in a location separate from the fuel passages of the wick with a liquid fuel. air passage that communicates the interior of the fuel tank with the external air, at least during combustion. Since the liquid fuel burner of the invention uses liquid fuel as an operating principle, it does not need a pressure resistant structure or a valve system and can therefore be a simplified structure. Furthermore, the invention allows the low-cost serial production of a burner having stable burning characteristics with a minimum change in the length of the temperature due to the change in temperature. Because an air passage is provided that communicates the inside of the fuel tank with the outside air in a separate laver of the fuel passages of the wick, even more, the decrease in the fuel tank of the internal pressure with the The decrease of liquid fuel in the fuel tank is compensated by the entry of external air through the air passage, thus eliminating the pressure difference between the exterior and the interior of the fuel tank. After what the fiama producing section of the wick has ignited, and a quantity of liquid fuel equal to that contained in the wick and consumed by burning, can quickly be exposed with liquid fuel from the fluid tank through the fluid passages of the suction section, which is not in a reduced pressure state. The fuel supply is therefore improved to provide a stable combustion state immediately after ignition. Another aspect of the invention provides a liquid fuel burner comprising a wick for burning liquid fuel and suctioning it by capillary from a fuel tank, characterized in that the wick is divided into two segments, and at least one of which is movable. to contact and separate from each other, supplying the fuel from one segment to another, during contact and cutting off the fuel supply during the separation, to limit the period of burning, and an air passage that communicates to the interior of the tank of fuel with the external air, at least during the combustion is provided in a lagar separated from the fuel passages of the wick. Since segment separation cuts off the fuel supply, an automatic extinguishing function after a prescribed period of burning can be easily obtained with high reliability. Because it is provided an air passage that communicates the inside of the fuel tank with the outside air in a place other than the fuel passages of the wick, the pressure difference between the inside and the outside of the fuel tank can be quickly eliminated to further improve the Reliability and stability of the limiting function of the burning period. The liquid fuel burner according to the invention may comprise a closing hood to prevent vaporization of the fuel. This provides a sealing effect that suppresses the evaporative dispersion of the liquid fuel from the wick and air passage and thus increases the service time. When a breakable hood can be opened and closed to seal the wicking section of the wick, the opening of the air passage to the outside air is preferably formed to communicate with the space closed by the closure hood in its closed state or to be closed to the sealing end of the closing hood in its closed state. Alternatively, an air passage closure member is provided in the closure hood or coupled thereto to open / close the air passage, with respect to the external air simultaneously with the operation of the hood opening / closing the fiama producing section. of the wick. In such a measure when the enclosing hood is in the closed state the air passage is also closed to prevent the evaporation of the liquid fuel, while during use with the open enclosure hood, the air passage is also open to produce the balancing effect between the internal pressure of the fuel tank and the external pressure. The air passage may be constituted as a space along a wick retainer provided to surround the outer periphery of the wick or as a groove formed in the inner surface of the wick retainer. It can also be constituted by arranging a capillary tube along the wick or as a groove formed in the wick. Since an air passage located near the wick allows the rapid elimination of the pressure differentials between the interior of the fuel tank and the outside, which are produced by changes in the ambient temperature or in the ambient pressure of the burner, the leakage of liquid fuel and the intake of external air through the fuel passages in the wick will be prevented sufficiently to prevent inconvenience during use. Another aspect of the invention provides a liquid fuel burner characterized in that it comprises a wick provided on a top wall portion of a fuel tank for stopping the liquid fuel and adapted to burn the liquid fuel pulled upwards by the capillary from the fuel tank. fuel, a device ignition or igniter itself to ignite the wick, an air passage that communicates the interior of the fuel tank with the external air at least during the burning, and that is provided in a separate place from the fuel passages of the wick, a hood for sealing an upper end of the fuel tank from which the wick and the ignition device protrude as it traverses a straight path along the wicking direction of the wick to adjust and cover the upper end of the fuel tank from above, and a package, or O-ring, or other sealing member interposed in the sealing portion of the hood. With this configuration, the hood can seal the upper end of the fuel tank desired by which the wick and the ignition device protrude through a straight path along the overhang direction of the wick to fit and cover the upper end of the wick. fuel tank from above. Since this simplifies the sealing structure and offers a high degree of freedom with respect to the spacing of the components, it also allows for a more compact structure. the hood can internally be equipped with an inner hood that is operated in unison with an operation to join / separate the hood to and from the fuel tank to seal the wick through a sealing member interposed, since this configuration reduces the volume of the sealed space, it has an excellent effect of suppressing the vaporization of the liquid fuel. When the hood is internally provided with the inner hood, the inner hood is guided to seal the wick by a peripheral adjustment portion between the fuel tank and the hood during attachment / separation of the hood to or from the fuel tank. The configuration allows the good operation of the joining / separating operation with respect to the internal adjustment portion, facilitating the assurance of a reliable seal. The inner hood can be attached to the hood by means of an elastic member that will allow the sealing of the wick with the sealing member kept under pressure. Since the configuration decreases the degree of precision in dimensions that is required during manufacturing, this facilitates production. Preferably in this configuration, either the inner hood is disposed eccentrically with respect to the hood and a surface orthogonal to the direction of attachment / separation of the peripheral adjustment portion of the hood and the fuel tank has to have an asymmetrical directionality or The inner hood is arranged concentrically with respect to the hood and a surface orthogonal to the direction of attachment / separation in the peripheral adjustment portion of the hood and the tank.

Fuel is formed to have a radial symmetry. This configuration improves the ease of use to allow an immediate connection according to the shape of the hood without the need to pay attention to the inner hood. The risk of the hood falling or being lost can be eliminated by providing a connecting member to connect the fuel tank with the hood separate from it. The upper end of the fuel tank to which the hood is attached removably may be provided at least in part at its outer periphery with a peripheral wall projecting upwards. This peripheral wall can be formed with an inclined upper edge or be provided with air holes to serve as a windshield and can also function as a guide member for the hood. The hood can be provided with a guide member to guide it slidably in the junction / separation direction relative to the fuel tank and can also be movable to a retracted position not on the wick and the lighter after it has moved past a position where the fuel tank is cleared. This configuration improves the operability of the hood to open and close while ensuring a good seal and a compact size. The guide member can be constituted as an axle member to guide the hood in the direction of attachment / separation with respect to the fuel tank to a position where a lower end of the hood is higher than the tip portions of the wick and the lighter, the rod member is connected to the hood at a separate point from its center, and the hood is adapted to rotate to the position backed up around the rod member. As another configuration, the guide member can be provided in half with a hinge and the hood can be made movable to the retracted position by oscillating it in an upper arc around the hinge. These configurations are particularly superior at the point that the hood does not become uncomfortable during ignition and use. Energizing means are specially provided for guiding the hood from the advanced position on the guide member to the retracted position. When the hood seals the upper end of the fuel tank from which the wick and lighter protrude through a straight path along the direction in which the wick protrudes to fit without covering the upper end of the fuel tank from above, the wick can be divided into two segments at least one of which is movable to contact and separate from the other, the fuel supplied from one segment to the other during contact and the fuel supply being cut off during the separation. Since a liquid fuel can be used alcohol fuel, for example one having a lower monovalent alcohol, methyl alcohol, ethyl alcohol or propyl alcohol, as the main component and having mixed a saturated hydrocarbon co or hexane or heptans to color the flame, or otherwise, a benzine hydrocarbon or petroleum hydrocarbon or the like. since a wick may be used whose flame making section and suction section are formed of different materials as set forth below in the embodiments, or otherwise the flame producing section and the suction section are integrally formed of the same material. DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic sectional view of a lighter as an example of a liquid fuel burner that is a first embodiment of the invention; Figure 2 is a schematic sectional view of a lighter which is a second embodiment; Figure 3 is a sectional view of an essential portion of a lighter that is a third embodiment; Figure 4 is a sectional view of an essential portion of a lighter that is a fourth embodiment; Figure 5 is a sectional view taken along line A-A in Figure 4; Figure 6 is a sectional view of an essential portion of a lighter that is a fifth embodiment; Figure 7 is a sectional view along line B-B in Figure 6; Figure 8 is a sectional view of an essential portion of a lighter that is a sixth embodiment; Figure 9 is a sectional view taken along line C-C in Figure 8; Figure 10 is a sectional view of an essential portion of a lighter that is a seventh embodiment; Figure 11 is a sectional view taken along the line D-D in Figure 10; Figure 12 is a sectional view of an essential portion of a lighter that is an eighth embodiment; Figure 13 is a sectional view of an essential portion of a lighter that is a ninth embodiment; Figure 14 is a sectional view taken along line E-E of Figure 13; Figure 15 is a sectional view of an essential portion of a lighter that is a tenth embodiment; Figure 16 is a sectional view of an essential portion of a lighter that is a eleventh embodiment; Figure 17 is a sectional view of an essential portion of a lighter that is a twelfth embodiment; Figure 18 is a sectional view of an essential portion of a lighter that is a thirteenth embodiment; Figure i and is a sectional view of a portion in schematic cut of a lighter that is a fourteenth mode; Figure 20 is a plan view of the lighter of Figure 19 with the hood removed; Figure 21 is a schematic sectional view of a lighter that is a fifteenth embodiment; Figure 22 is a plan view of the lighter of Figure 21 with the hood removed; Figure 23 is a sectional view of a lighter that is a sixteenth embodiment; Figure 24 shows a plan view of a lighter which is a seventeenth embodiment with the hood removed and a sectional view of an essential portion thereof. Figure 25 shows plan views of two types of lighters according to a eighteenth embodiment with the hoods removed; Figure 26 is a sectional view of an essential portion of a lighter that is a nineteenth embodiment; Figure 27 is a perspective view of an essential portion of a lighter that is a twentieth embodiment; Figure 28 is a sectional view of an essential portion of Figure 27; Figure 29 is a sectional view of an essential portion of a lighter that is a twenty-first embodiment; Figure 30 shows section views of the portion essential of a lighter that is a twenty-second modality, the hood attached and removed; Figure 31 is a set of graphs showing how the length of the fiama varies as a function of the burning period after ignition at different diameters of the air passage; Figure 32 is a graph showing how the length of the fiama immediately after the ignition varies as a function of the diameter of the air passage; Figure 33 is a graph showing how long the flame length varies to reach 25 mm as a function of the air passage diameter; Figure 34 is a graph showing how in the steady state the flame length varies as a function of the diameter of the air passage; The embodiments of the liquid fuel burner according to the invention will be explained below with reference to the drawings. First Mode Figure 1 schematically shows the transverse structure of a disposable cigarette lighter as an example of a liquid fuel burner. The lighter indicated by the figure 1, has a fuel tank 2 of cylindrical shape with a closed bottom. Fiber material 3 (filler) is inserted inside the fuel tank 2 and a top hood 4 is attached to the upper portion of tank 2 to constitute a hermetic structure that contains, but can not be refilled with liquid fuel. Fuel tank 2, for example, provided as a shaped article made of polypropylene with an internal volume of 5 cnr. "Fiber material 3 is polypropylene fiber of a thickness of 1-2 denier compacted in fuel tank 2. At a density of 0. lg / cm3 4g of liquid fuel, a mixture of 95% ethyl alcohol and 5% both by weight of n-hexane is poured in and impregnated into that fiber material for storage. A wick retainer 7 is installed to pass vertically through the upper cover 4 into the interior of the fuel tank 2. The wick 6 is formed separately from different materials in a flame producing section 61 and in a lower suction or lift section. of fuel 62 and the two are joined by the metallic cylindrical wick retainer 7 with the lower end of the flame producing section 61 and the upper end portion of the suction section 62 in contact. Wicking device 7, which is provided on its outer periphery with a fixing thread 7a, is screwed into a threaded hole 4a of the upper cover 4 of the fuel tank 2 to sandwich a seal ring 8 on the background and fix it in place. A faceplate 9 is provided on the upper surface of the upper cover 4. The lower end portion of the suction section 62 of the wick 6 makes contact with the fiber material 3 in the fuel tank 2 and sucks the impregnated liquid fuel in material 3 using capillarity. the fiama producing section 61 of the 6"wick is ignited to burn and generate a fiama.The flame section 61 is composed of bundled glass fibers, eg the glass fibers have a thickness of 6 microns, a density of fibers (metsuke value) of 150 mg / cm3 and an outer diameter of 3mm and a length of 10mm, are inserted into the wick retainer 7 to protrude a length of 3mm from the tip portion of the retainer 7. The suction section 62 , formed as a shroud has a large diameter head portion when molded and sintered polyethylene powder, has its head portion inserted into the lower portion of the wick retainer 7 to make contact with the lower end of the fiama producing section 51 , and the lower end portion of the retainer 7 is caulked in that state, whereby the flame producing section 61 and the suction section 62 are integrally joined to form the wick 6. The section n suction 62 is obtained, for example, by placing a powder mold polietiieno which is a mixture of particles of 70-200 mesh with an average particle size of 140 mesh and sinter for 10 minutes at 170 ° C. The head portion 62 a is molded to an external diameter of 4.2 mm and a length of 3 mm and the portion of the lower leg with an external diameter of 4 mm and a length of 37 mm. The amount of fuel consumed by the wick 6 upon ignition, the shape of the flame and the length of the flame, are determined by the thickness, number and length of the glass fibers of the flame-producing section 61, in contrast to the modeling of the spaces or voids in the suction section 62, which determines the suction and fuel supply characteristics, differs with the thickness, the particle diameter of the sintered polyethylene, the sintering density and the like of the suction section 62. The head portion of the suction section 62 is formed in a large diameter to have a large volume, constituting a fuel container for holding the liquid fuel. The stabilization in the burn is obtained by this fuel container. A lighter or properly in this case a producer for the ignition of the lighter marked with the figure 10, is installed in the upper cover 4 to face the tip of the flame producing section of the wick 6. A clamp 11 of the lighter 10 is fixed to the top cover 4 and has a flint part 12 inserted for moving vertically and a rotary gearing wheel 13 is at the upper end of the clamp 11. the tip of the flint 12 is pressed against the peripheral surface of the knocking rotating wheel 13 by the force of a pusher spring of the flint 14 and rotation of the The wheel 13 causes sparks flying to the wick 6. A closing hood 16 to prevent evaporation is provided to open and close with the cover the flame producing section 61 of the wick 6 together with the protruding portion of the retainer. Wick 7. That closure hood 16 is mounted to rotate on a pivot 17 at an end portion of the upper surface of the cover 4 of the fuel tank 2. The closure hood 16 is formed to have a space S sealed in the form of Inner U and the sealing end for the pressure contact is provided with a seal member 18. • An air passage 20 is open in the lighter 1 of the structure an This is done by perforating a hole through the upper cover 4 and the front or face plate 9, to communicate the interior of the fuel tank 2 with the outside air. The opening of the air passage 20 on the external air side is located at a point inward of the sealing member 18 of the closed closing hood 16, to communicate with the sealed space S. The diameter of the air passage 20 is for example 0.5mm-2.00mm The presence of the air passage 20 allows the interior space of the fuel tank 2 to communicate with the outside air as long as the closure hood 16 is kept open. When the tip of the wick 6 is ignited by the ignition means or igniter itself and combustion begins, the liquid fuel is supplied from the suction section 62 to the flame producing section 61 through the fuel passages of the Wick 6 in an amount equal to the amount consumed in section 61 by burning. The liquid fuel is thus pulled from the fuel tank 2. Ordinarily the reduction of the internal pressure of the fuel tank 2 which is produced by the decrease in the volume of the fuel in the tank 2, tends to prevent pulling or suction. However, since any differential pressure that is present is eliminated by a proportional input of external air through the passage for air 20, a fast unimpeded supply of fuel will be made to the section 61 producing the fiama, ensuring the early stabilization of the flame length from the initial burn state. When the internal pressure of the fuel tank 2 rises above the external air pressure due to for example, an increase in the temperature of the lighter 1 or a decrease in the external air pressure, the internal air is discharged through the passage. of air 20. Therefore the Liquid fuel retained in the wick 6 does not leak through the flame producing section 61. Correspondingly, when the internal pressure of the fuel tank 2 falls below the external air pressure due, for example, a decrease in temperature of the lighter 1 or an increase in external pressure, the external air flows through the air passage 20. Since the liquid fuel retained in the wick 6 is therefore not forced back by the external air that penetrates, it is not presents no deficiency in the Flame producing section 61. When the hood 16 is closed, the escape of vaporized liquid through the air passage 20 is suppressed because the outer opening of the air passage 20 communicates with the sealed space s. The lighter l according to the first embodiment was subjected to tests under the conditions of use to establish the effect of forming the air passage 20. The results are stated in a later section. SECOND MODE As shown in Figure 2, the lighter i of this mode resembles that of the previous mode, in the configuration of the wick 8, but differs in the relation between the air passage 20 and the closing hood 16. In this embodiment, the sealing end of the closure hood 16 has a seal member 19 which provides a the wide sealing surface and the air passage 20 is perforated so that its outer opening faces the sealing member 19. In other words, the air passage 20 communicating with the interior of the fuel tank 2 with the external air, is provided to be opened and closed directly in conjunction with the operation of opening and closing the closure hood 126. The other portions are formed as in the first embodiment. The same constituent elements are provided with the same reference figures, and their explanation is omitted. As in the first embodiment, this mode also has stable burning characteristics, although it is even more reliable to prevent leakage of the liquid fuel and vaporization through the air passage 20 when the closing hood is lowered. THIRD MODALITY An essential structural feature of the lighter of this mode is shown in Figure 3. An air passage 21 communicates the interior of the fuel tank 2 with the external air being formed through the retentate of the wick 7 fitted around the wick 6, so that it runs parallel to the wick 6. A ring O 31 for sealing is fitted around the portion tip of the wick retainer 7 and seal the section 61 flame maker of the wick 6 and the opening of the air passage 21 is established by the pressure contact between Inner peripheral surface of the sealing end 16a of the closing hood 16 and the ring O 31. The sealing end 16a of the hood 16 is bevelled for easy adjustment on the ring or 31. FOURTH MODALITY An essential feature of this lighter The embodiment is shown in Figure 4. A sectional view taken along line AA of Figure 4 is shown in Figure 5. An air passage 22 communicating the interior of fuel tank 2 with the outside is formed. by cutting and removing a portion of the wick 6 to establish a space as a slot between the wick 6 and the wick retainer 7. The flame producing section 63 of the wick 6 of this embodiment is not made of glass fibers but of a porous ceramic sintered body formed around a bar shape and contains continuous bubbles (capillary passages) in the interior. The upper portion of this fiama producing section 63 is mounted to protrude from the tip of the wick retainer 7 in a prescribed amount (e.g. 3mm). This protruding amount, whose diameter and the like determine the size of the fiama. It is constituted to have an external diameter of 3.0 mm and a length of 10 mm. On the other hand the lifting or pulling section whose tip portion impacts on the lower end portion of the Flame producing section 63 is also made of a porous material of a sintered body of polyethylene powder and molded into a rounded bar shape, an edge portion of the suction pulling section 62 is withdrawn in the sectional form of a segment of from the tip portion of the fiama producing section 63 to a point below the wick retainer 7 to form the air passage 22 between the wick 6 and the inner surface of the cylindrical wick retainer 7. The characteristics of this passage of air are the same as those of the preceding modes. FIFTH MODE An essential structural feature of the lighter of this embodiment is shown in Figure 6. A sectional view taken along line BB of Figure 6 is shown in Figure 7. Air passages 23 communicate the interior of the tank of fuel 2 with the outside and are formed by spaces between the wick 6 and the wick retainer 7. Specifically, the fiama producing section 61 and the upper portion of the pulling section 62 of the wick 6 are formed to have transverse sections and the internal hole 7b of the wick retainer 7 is formed to have a rectangular cross section. Therefore, approximately triangular spaces are defined to pass vertically to the four corners between the two. These spaces constitute the air passages 23 that communicate the inside the fuel tank 2 with the outside. The other portions are formed as those of the third modality. SIXTH MODE An essential structure characteristic of the lighter of this embodiment is shown in Figure 8. A sectional view taken along line C-C of Figure 8 is shown in Figure 3. an air passage 24 communicates the interior of the fuel tank 2 with the outside being formed by a slot provided in the inner hole 71 of a wick retainer 7. Specifically a portion of the inner surface of the internal bore 7ia of the wick retainer 71 to stop the wick 6 is formed with a vertical groove extending over the entire length of the retainer 71 in the axial direction. When the wick 6 is inserted into the inner hole 7la, the air passage 24 is defined to run parallel to the peripheral surface of the wick 6. The inner hole 7a for stopping the wick 6 is formed eccentrically in the wick retainer 71 and the air passage 24 is provided in the thick wall portion. the other portions are formed as those of the third modality. SEVENTH MODALITY An essential structural feature of the lighter of this mode is shown in Figure 10. A sectional view taken along line D-D in Figure 10 is shown in Figure 11, An air passage 25 communicates the interior of the fuel tank 2 with the outside being formed by a slot provided between the wick retainer 7 and the upper cover 4 of the fuel tank. Specifically a threaded hole 4a is formed through the upper cover 4 of the fuel tank 2 and a fixing thread 7a is formed in the lower peripheral portion of the wick retainer 7 to retain the wick 6 there that is screwed into the threaded hole 4a. A portion of the internal surface of the threaded hole 4a is formed along its entire length with a vertical slot. The air passage 25 communicates the fuel tank 2 with the outside being formed by the vertical slot. the other portions are formed as those of the first modality. EIGHT MODALITY An essential feature of the lighter of this mode is shown in Figure 12, an air passage 26 communicates the interior of the fuel tank 2 with the outside being formed by a vertical slot provided in the outer periphery of the wick retainer 7. Specifically, a portion of the fastening thread 7a cut around the lower end of the wick retainer 7 has a vertical groove with a length greater than the thickness of the upper cover 4 of the fuel tank 2, to define the air passage 26 between the internal and external side of the cover 4. The other portions are formed as those of the seventh embodiment. NINE MODALITY An essential structural feature of the lighter of this embodiment is shown in Figure 13. A sectional view taken along the line EE of Figure 13 is shown in Figure 14. An air passage 27 communicates inside the fuel tank 2 with the outside being formed by a capillary tube installed parallel to the wick 6. Specifically, a capillary tube 32 is implanted vertically to one side of and parallel to the inner hole 71a of the wick retainer 71 of the wick 6. Ei The inner channel of the capillary tube 32 constitutes the air passage 27. The inner hole 7 for stopping the wick 6 is formed eccentrically in the wick retainer 71 and the air passage 27 is provided in the thick wall portion. The other portions are formed as those of the third modality. TENTH MODALITY An essential structural feature of the lighter of this embodiment is shown in Figure 15. In this embodiment, the wick 6 is divided into two segments to allow a rationed burn. The wick is divided into two segments by separating the pull or suction section 62 into a lower pull segments 6"2b and a top pull segment 62a that is capable of to slide vertically in conjunction with the fiama producing section 61 to bring its lower end into contact with and remove from contact with the upper end of the lower pull segment 62b. Specifically the flame producing section 61 and the upper pulling segment 62a are retained in a cylindrical wick retainer 72 and the wick retainer 72 is supported in a sliding hole 4b in the upper cover 4 of the fuel tank 2, to be vertically slideable On the other hand, the lower suction or pull segment 62b has its upper end secured to the upper cover 4 and its lower end inserted into the fuel tank 2. The upper pulling or suction segment 62a constitutes a one-volume fuel container. capable of retaining the amount of fuel required for a prescribed period of burning time in the flame producing section 61. An air passage 28 communicates inside the fuel tank 2 with the outside air and is formed of a first passage segment. of air 28a passing vertically through the wick retainer 72 and a second air passage segment 28b formed to pass through the floor of the sliding hole 4b of the upper cover 4 to communicate with the first air passage segment 28a . The wick retainer 72 is fitted with the sealing ring 33 and accommodated in the sliding hole 4b and is guided in the spacer direction (upwards) by a helical spring 34. The spring 34 is inserted between the upper surface of the cover 4 and the upper end of the wick retainer 72. When the flame producing section 61 and the pulling segment 62a are moved upwardly under the force of the coil spring 34, the lower end of the upper pull segment 62a is separated from the upper end of the lower suction pulling segment 62b to form a space or light between the two segments. A sealing member 18 on the sealing end of an open / close closing hood 16 to cover the fiama producing section 61 of the wick 6 is adapted to press the wick detent 72 downward upon striking the upper end thereof in a region outside the opening of the first air passage segment 28a. When the closing hood is closed, it presses the wick retainer 72 downwardly against the force of the coil spring 34 to bring the lower end of the lower pull segment 62a into contact with the upper end of the lower pull segment 62b and simultaneously covers and Seals the air passage 28 of the fiama producing section 61 to prevent the escape of liquid fuel upon vaporization. Since the upper pull segment 62a and the lower pull segment 62b of the wick 6 are thus in contact when the hood 16 is closed, a prescribed amount Liquid fuel is supplied to and held by the flame producing section 61. When the hood 16 is subsequently opened, the wick retainer 72 is released from the downward pressure and moves upwardly by the coil spring 34 to break the contact with the lower pull segment 62b and cut off the fuel supply. After the flame producing section 61 is ignited, the flame burns using the fuel retained in the fiama producing section 61 and the upper fuel pulling segment 62a. When all the fuel has been used, the flame automatically shuts off. The above configuration constitutes a rationed burning mechanism (automatic extinction mechanism). The characteristics imparted by the formation of the air passage are the same as those of the first modality. In this embodiment, the pull segment 62 a and the lower pull segment 62 b are formed to have slanted impact surfaces to enlarge the contact area and increase the amount of liquid fuel delivered per unit time. ELEVENTH MODE An essential structural characteristic of the lighter of this mode is shown in Figure 16. As in the tenth mode the wick is divided into two segments to allow rationed burning, an air passage 29 communicates the inside of the tank 2 with the outside being formed by a cut with removal of a portion of the wick 6 to establish a gap like space between the wick 6 and the wick retainer 72. The structures of the flame producing section 63 and the The pull section 62 of the wick 6 and the air passage 29 are the same as those of the fourth embodiment. The wick 6 is made in the form of a bar of a fiama-producing section 63, constituted by a porous ceramic sintered body, a suction or upper suction segment 62a constituted by a sintered body of polyethylene powder, and a pulling segment bottom 62b, The edge portions of the upper pull segment 62a and the lower pull segment 62b are withdrawn in the sectional form of a circle segment (see Figure 5) from the tip portion of the fiama-producing section 63, in order to form the air passage 29 between the wick 6 and the internal surface of the cylindrical wick retainer 72. The characteristics of this air passage are the same as those of the preceding modes. TWENTY-EIGHT MODALITY an essential structure of the lighter of this mode is shown in Figure 17. The wick 6 and the air passage 20 are configured as those of the second embodiment.

The closure hood 16 of this embodiment is formed to have a sealed inner U-shaped space for open / close covering of the flame producing section 61 of the wick 6 together with the protruding portion of the wick retainer 7 and the end The sealant thereof is provided with a sealing member 18 as in the configuration of the first embodiment. The closure hood 16 is further provided with a separate air passage closure member 35 in front of the air passage opening 20. The tip of the closure member 35 is provided with a seal member 35a and the outside opening of the passageway. of air 20 is opened and closed directly in conjunction with the opening and closing operation of the closing hood 16. The other portions are formed as those of the first embodiment. DECIMATERCERA MODALITY An essential structural feature of this mode lighter is shown in Figure 18. Another structure is illustrated for opening / closing the air passage 20 with the operation of closing / opening the hood 16. Air passage 37 consists of a valve body provided in the outer opening of an air passage 20 formed through the upper cover 4 to open and close that opening. The closing member 37 is guided in the closed direction by a spring 38.

On the other hand, the closing hood 16 is formed with a presser 36 capable of applying pressure to the closing member 37. The structure thus performs the operation of closing the air passage with the closing member 37 at the time of the closing operation. of the hood 16. EIGHTEEN MODALITY Figure 19 schematically shows the sectional structure of a disposable cigarette lighter as an example of a liquid fuel burner. Figure 20 is a plan view with the hood removed. The wick 6 is formed integrally, for example, by a sintered porous glass body, a porous ceramic sintered body, or a porous material obtained by joining glass fibers in a bundle. As indicated above, it can be formed separately from different materials in the upper fiama producing section and in the lower fuel or suction pulling section. A hood that prevents evaporation 16 to seal the protruding ends of the wick 6 and the lighter itself 10 (which is properly an ignition member and should not be confused with the general object of the invention) is provided to be unible and removable with respect to the upper cover 4 of the fuel tank 2. To effect the seal, the hood 16 travels a straight path along the direction of the protrusion of the wick 6, this is moved in a direction of union / separation parallel to the longitudinal direction of the fuel tank 2 and axially of the wick 6, to fit over and cover the periphery of the upper wall portion 4 from above. The hood 16 is cylindrical and the inner periphery of its open lower end fits over the outer periphery of the upper end of the upper cover 4 to sandwich a sealing member 30 (a ring O) provided in the upper cover 4 intermediately. The inner periphery of the lower end of the hood 16 is tapered for easy adjustment. An air passage 20 is provided to pass vertically through the upper cover 4 of the fuel tank 2. The hood 16 is retained in its closed state with respect to the tank 2 by sliding friction between the sealing member 30 fitted in the cover 4 and the internal adjustment surface of the hood 16. Other retaining structures can also be configured by adopting a different sealing member and suitable design modifications. For example, the sealing member may be a ring-shaped package disposed in the outer peripheral portion of the fuel tank 2 where it makes contact with the hood 16 in the axial direction, fitting portions of the outer surface of the upper cover 4 and ia internal surface hood 16 can be provided with a ridge-valley storing structure as shown for example in Figure 23 described below, and hood 16 can be retained in a pressure-sealed state applied to a packing sealant member 9 in its portion of tip. When the hood 16 of this lighter 1 is removed from the fuel tank 2 by pulling it in the direction of separation, the wick 6 and the igniter itself are exposed and the ignition device lü can operate to generate sparks and ignite the tip of the igniter. wick 6. When extinguished, the flame is blown and the hood 16 fits over the fuel tank 2 in the axial direction to seal the wick 6 and suppress the escape of vaporized liquid fuel. FIFTEEN MODALITY This embodiment of the lighter is shown in Figures 21 and 22. The hood 115 of these embodiments consists of a cylindrical main portion and a cylindrical internal hood 116 provided on the inner side of the main portion for sealing only the portion of the lighter. wick 6. As in the fourteenth embodiment, the wick 6 retained by the wick retainer 7 is inserted vertically into the center of the upper cover 4 of the tank 2. A sealing member (aniiio-0) is attached around the portion Tip of the Wick Retainer 7.

The inner hood 116 is disposed in the central portion of the hood 115 to be concentric with the peripheral cylindrical portion thereof. When the hood 115 is fitted on the upper cover 4 of the fuel tank 2 from above through a straight path in the direction of union / spacing parallel to the projecting direction of the wick 6, the hood 116 can be fitted on the outer surface of the wick retainer 7 with the sealing member 31 intermediate interposed. The inner periphery of the lower end of the inner hood 116 is tapered for easy adjustment. An air passage 20 is formed as a groove in the internal surface of the wick retainer 7, similar to the sixth embodiment, and the opening thereof communicates with the internal sealed space of the inner hood 116 when closed. Although the ignition device 10 is mechanically the same as that of the fourteenth embodiment, it has size and position to be inserted between the outer wall of the hood 115 and the inner hood 116 when the hood 115 is attached. In line with this, a space allows the insertion of the inner hood 116 formed between the m retainer 7 and the ignition device 1. The configuration is such that before the inner hood 116 fits over the wick retainer 7, the outer wall portion of the hood 115 is guided by the portion of peripheral adjustment on the outer surface of the upper cover 4, so that the adjustment position is determined to allow an easy and secure adjustment. Although the sealing member 30 of Figure 19 is not interposed in the peripheral adjustment portion, it can be provided if necessary. The other portions are formed equal to those of the fourteenth modality. SIXTEEN MODALITY An essential structural feature of this embodiment is shown in Figure 23. The configuration of the inner hood 216 of the hood 215 differs from that of the preceding embodiment. The hood 215 of this embodiment is comprised of a cylindrical main portion and the cylindrical inner hood 216 is provided on the inner side of the main portion for sealing only a portion of the wick 6. The inner hood 216 is installed to be slidable on the inside. axial direction and is guided by an elastic body 218. Specifically, a guide cylinder 217 is provided in the hood of the hood 215, and the inner hood 216, a cylinder of small diameter, is retained in the guide cylinder 217 capable of project axially and backward axially. The elastic body (helical spring) 218 is inserted into the guide cylinder 217 under compression so as to guide the inner hood 216 in the projecting direction.

A retainer structure is provided to prevent the inner hood 2I6 from falling out of the guide cylinder 217. A sealing structure between the inner hood 216 and the wick 6 is constituted by installing a sealing member (a ring-shaped packing) 39 around of the wick retainer 7 in contact with the upper surface of the upper cover 4 and allowing the force of the elastic body 218 to press the lower end of the inner hood 216 onto the end surface of the sealing member 39. A valley / mesh coupling structure crest formed in the fitting portion between the outer surface of the upper cover 4 and the inner surface of the outer cylindrical portion of the hood 215 prevents it from being detached by the force of the elastic body 218. The other portions are formed in a similar manner to that of the tenth modality. Seventeenth mode This mode of the lighter is shown in Figures 24. The hood 315 of this mode is addressed in regard to fixation. Figure 24 (A) shows the structure of the upper cover 4 of the fuel tank 2 in plan view, with the hood 315 detached. The peripheral adjustment portion is elliptical (egg-shaped). Since this shape does not have a radial symmetry, the layer 215 is directional in relation to the fixation. In contrast, the adjustment portions in the < The fourteenth to sixteenth modalities, this is radial, symmetric, and have no directional in relation to fixation. The wick 6 is disposed eccentrically with respect to the elliptical top cover 4, this is a displacement on one side from the center of the upper cover 4 of the fuel tank 2, thus fixing a wide space for installing the ignition device 10, whose Rotary hammer wheel 13 or the like can therefore be of a large size. Coupled thereto, the inner hood 316 within the hood 315 is also disposed in a displaced position. The other portions are formed as those of the fifteenth modality. Eighteenth embodiment Figure 25 shows the plan views of the structures of the upper cover 4 of the fuel tank 2 of two types of lighters according to this embodiment, with the hoods peeled off. The hoods have no directionality with regard to fixing. The shape of the peripheral adjustment portion (shape in a plane perpendicular to the fixing / spacing direction) in FIG. 25 (A) is xa of a triangle with radial symmetry and the shape of the peripheral adjustment portion in FIG. 25. (B) is ia of a quadrangle with radial symmetry. The detached hood (not shown) is formed with a triangular or quadrangular shape according to the shape of the fuel tank 2. The wick 6 is arranged in the center of the cover upper triangular or quadrangular 4, this in the center of the radially symmetrical profile of the upper cover 4 of the combus ibie tank and accordingly, an inner hood, such as the inner hood 116 in Figure 21, is formed at a central point inside the hood (not shown). Fixation is possible in positions where the adjusting portion of the hood is radially symmetrical and although the degree of freedom is less than with a circular shape, the hood has no directionality with respect to fixation. The other portions are formed equal to those of the fifteenth mode. Nineteenth Modality An essential structural feature of this mode lighter is shown in Figure 26. This lighter 1 has the same basic structure as the fifteenth embodiment but is additionally provided with a structure to prevent the loss of the hood 115. Specifically the hood 115 a first detent 41 is provided, the fuel tank 2 is provided with a second retainer 42, and the retainers 41 and 42 are lined with a connecting member 43 such as a chain. The other portions are formed equal to those of the fifteenth embodiment, 20th embodiment. An essential structural feature of the lighter of this embodiment is shown in FIG. 27. A sectional view of the structure is shown in FIG. 28. In this embodiment the hood 115 can be rotated to a retracted position after separation. The wick 6 is located in the center of the fuel tank 2, the ignition device is provided on one side of the wick 6, and as in the fifteenth embodiment, the hood 115 is provided with an inner hood 116. A constituted guide member as an axis member, it is attached to an inner portion of the hood thus structured 115 at an eccentric point near the peripheral wall. The inner portion of the guide member 45 is inserted into an edge portion of the fuel tank 2 to be slidable in the attachment / separation direction, ie in the vertical direction. Thus the hood 115 is supported so as to be able to move along the guide member 45 in the fixing / separation direction and to rotate around the guide member 45. The energizing means 46 (a coil? E twist) fits over the member 45. One end of the torsion coil 46 is fixed to the inner surface of the hood 115 and its other end is fixed to the edge of the fuel tank 2. The hood 115 is thus pushed in the direction of rotation and driven by a push force up. At least a portion of the peripheral edge of the upper end of the fuel tank 2 is formed with an upwardly projecting peripheral wall 47. The peripheral wall 47 is formed to be low in the portion of the peripheral wall. ignition device 10 and high in the vicinity of the wick 6. It is provided with air holes 47a. The peripheral wall 47 performs the double function of a protection and a guide for the hood 115 at the time of fixing and separation. In this embodiment, when the hood 115 has been placed in the fuel tank 2 to seal the wick 6 with the inner hood 116, the energizing means is wound in the twisting direction and deformed by compression in the axial direction. In the course of removing the hood 115 to use the lighter the lower end of the inner hood 116 is first uncoupled with the sealing member 31 from the wick holder 7. In this state the position of the hood 115 is such that it will collide with the lighter. tip portion of the wick and the ignition device 10 if it is rotated. This does not occur, however, because the hood 115 moves upwardly along the peripheral wall 47 by the force of the energizing means 46 to the force of the collision range, when the lower end of the hood 15 has been removed. raised above the ignition device 10, the force of energization 46 automatically rotates the hood 115 around the guide member 45 is its position above the fuel tank 2 to the retracted portion. When hood 115 is closed after use, it is rotated in the opposite direction to a position above the tank.

Fuel 2 to a retracted position. When the hood 115 must be closed after use, it is rotated in the opposite direction to the position above the fuel tank 2 and then pressed down to be fixed along the guide member 45. This mode facilitates the removal operation. the hood 115 at the beginning of use and prevents the loss of the hood xlo. Although this embodiment is provided with energizing means (torsion coil) 46 for automatically rotating the hood 115 to the retracted position, it is possible to adopt a configuration without energizing means, in which case the hood 115 is rotated manually to the retracted position. Furthermore, instead of providing the guide means 45 for moving along with the hood 115 in the direction of attachment and separation, it is possible to adopt a configuration in which the hood 115 is made desiizabíe in relation to a fixed guide member 45 or in which the guide member 45 is made in the form of a plate and the member for the sliding support is made rotary. Twenty-first First Modality An essential structural feature of the lighter of this embodiment is shown in Figure 29. While the previous embodiment rotates the hood 115 to a retracted position, this embodiment is configured to tilt the hood 115 to a retracted position when a member is bent. guide 49 The guide member 49 is provided near the point where the hood 115 fits over the upper cover 4 of the fuel tank to guide the hood 115 in the attachment / separation direction. It is constituted as a crossbow that has an intermediate hinge 49a. The hood 115 is attached to the guide member 49 above the hinge 49a. The portion of the guide member 49 below the hinge 49a is retained in the fuel tank 2 to be vertically slidable by the use of a retainer member 50. The guide member 49 also structurally includes energizing means for pushing the hood 115 so that it falls in the direction of bending in the course of turning in an upward arc around a hinge 49a. The other portions are formed as those of the twentieth modality. In this embodiment, when the hood 115 rises from the closed state, it is first separated from its fixation with the fuel tank 2 and after raising a certain distance to a position where it is out of reach of the ignition device 10 etc. , it automatically tilts and moves to the retracted position by the force acting in the direction of inclination around the hinge 49a of the guide member 49. Alternatively, the energizing means may be omitted from the mode to provide a configuration that requires that the Hood 115 is manually rotated along the upper shaft. Twenty-second modality An essential structural feature of the lighter of this embodiment is shown in Figure 30. In this embodiment, the wick 6 is divided into two segments to allow proportional ignition. In a configuration similar to that of the sixth embodiment, an air passage is formed by a notch provided in the inner hole of a wick holder 65. The materials of the fiama producing section 63 and xa extraction section 62 of the wick 6 are like those of the eleventh modality. The use of other materials is also possible however. For example, a flame producing section 63 is made of glass fibers or a sintered porous glass body is also suitable. The wick holder 65 is inserted into the upper cover 4 with a sealing ring 66 interposed therebetween. The inner end of the wick holder 65 rests on an elastic member 67 (a disc spring) supported on the upper surface of a support member 64. The elastic member 67 pushes the wick holder 65 in the direction of separation (upwards). When the flame production section 61 has been moved upward by the force of an elastic member 67, the lower end of the flame producing section 61 is separated from the upper end of the extraction section 62 to form a space between the two A sealing member 70 is fixed in the portion of The tip of an inner hood 69 of an opening / closing hood 68 for covering the wicking section 63 of the wick 6. The inner surface of the sealing member 70 is adapted to strike on the upper surface of the wick holder 65 and presses the The wick holder 65 downwards, when the hood 68 closes, hits and presses the wick holder 65 downwards against the force of elastic movement 67 to put the lower end of the fiama producing section 63 in contact with the upper end of the wick holder 65. the extraction section 62 and simultaneously covers and seals the fiama producing section 63. A ridge-valley coupling structure is also provided between the inner peripheral surface of the hood 68 and the outer periphery surface of the upper cover 4. The space produced between the flame producing section 63 and the extraction section 62 in the separation needs to be large enough to break the co ntacto. It is enough of approximately 1 mm or even smaller. The elastic member 67 is not limited to the disc spring but may have various different shapes such as a rubber member, multiple coil springs of small diameter or large diameter coils as those of the tenth embodiment. Although the producing section of fiama 63 is adapted to make and break the contact in response to the attachment and separation of the hood 68 in the above embodiment, it is alternatively possible to insure the extinguishing capacity. automatic when mounting on the fuel tank 2 a screw mechanism, a rubber mechanism or the like to vertically move the production section of fiama 63, and provide an operation member to operate the mechanism, whereby the production section of the fiama 63 it can be moved to make and break the contact by a user operation. The embodiments of the invention described above allow the operations of fixing and separating the hood to be carried out along a straight path that coincides with the direction in which the wick of the fuel tank protrudes. In accordance with this movement, the sealing structures in the sealing portions can be simplified. In addition, the linear location of the hood corresponding to its movement along a straight path reduces the interference with other components, and thus allows the compact distribution of the components and simplifies its design. Tests A lighter according to the invention according to the first fashion and a comparison ignition and the same structure except that the air passage is omitted were examined to determine the effect of forming the air passage, (l) Change in the length of the flame during continuous combustion The wicks of the lighters formed with steps of Different diameter air were ignited and the change in the length of the flame during 120 seconds of continuous combustion was measured. The results are shown in figure 31. The results are shown in figure 31 (A) for a lighter with an air passage diameter of 0 mm, that is the comparative lighter, and in figures 31 (B), 31 (C) and 31 (D) for the lighters of the invention with air passage diameters of o.5mm, i.smm and 2.omm respectively. Figure 32 shows how the flame lengths immediately after ignition in the measurement of Figure 31 varied as a function of the air passage diameter. It will be noted that the length of the flame immediately after ignition was 20 mm in the lighters of the invention having air passages compared to 15 mm in the comparative igniter having no air passage. Figure 33 shows how the time for the length of the fiama to reach 25mm varies as a function of the air passage diameter. It will be noted that the time required for the length of fiama to reach 25 mm was 5 seconds in ei. chaos of the lighters of the invention compared to zero seconds in the case of the comparative lighter. Figure 34 shows how stable the flame length varied as a function of the diameter of the air passage. While the length of fiama stabilized in approximately 20-30 seconds of combustion after ignition, the length of the Flame DX at this time was 25 mm in the case of the comparative igniter without air passage but was 40 mm in the lighters of the invention provided with air passages. The meaning and the previous resolutions will be considered. Although Figure 31 shows the change in length of fiama measured during 120 seconds of continuous combustion, what is important during the actual use of a lighter is the length of the flame immediately after ignition or within a period of about 10 seconds. -20 seconds after the ignition. Considering this point in Figures 32 and 33, it can be seen that the flame length immediately after ignition of the igniter without air passages was short, that the provision of the air passage increased the flame length, and that approximately the same Results were obtained with different diameters of air passage in the range of 0.5-2.0 mm. While each of the fires grew with the time that followed ignition and then stabilized at a certain length, the provision of the air passage allowed the fi re to quickly grow to a length suitable for use. In addition, it can be seen from Figure 34, the length of the flame stabilized after a certain time of combustion was markedly greater in the lighters that the air passage has than in the lighter without it. In other words, the maximum flame length with a protruding length of the wicking section of the wick increases when providing the passage of air. This means that the amount in which the wick protrudes can be reduced. Since the size of the sealing portion of the hood to prevent leakage of the vaporized fuel from the wick may be reduced when the amount protruding is less, the lighter may become more compact. (2) Liquid fuel leaks The wick portion was observed to detect liquid fuel leaks when the ambient temperature was changed. The results are shown in table l. The wick portion was observed in regard to liquid fuel leaks when the environmental pressure was varied by + 20% in relation to atmospheric pressure. The results are shown in table 2. When the room temperature increases and when the ambient pressure is reduced, the comparative igniter without ignition device experienced leakage of liquid fuel from the wick because the internal pressure of the fuel tank became higher that the external pressure, while the lighters of the invention did not experience such leaks because the pressure difference was eliminated by the air passages, rage 1 (Or: no leaks x: leaks) : without ugas x: ugas The modali? a? of the invention described above thus provide burners that use liquid fuel, particularly lighters and other ignition producers to initiate the fire, which are provided with an air passage along the passage Fuel (wick) to communicate with the inside of the fuel tank with the outside in order to make the flame length after the ignition so long as possible and increase the rate of growth and the length of fiama after ignition, achieve better results than with a burner not provided with an air passage. In addition, the length of a wick to ensure a given flame length can be trimmed and the length of the sealing hood to prevent escaping vaporized fuel from the wick when it is not in use can be trimmed to simplify the producer, while ai Also provide the air passages inside this portion, the exhaust of the liquid fuel vaporized through the air passage can prevent the filtering of the liquid fuel, if changes in the ambient temperature and pressure in the air occur. environmental air

Claims (23)

1. OD CLAIMS 1.- A liquid fuel burner or lighter a wick to burn liquid fuel sucked through the capillary? It is a fuel tank, characterized in that it is provided in a location separate from the fuel passage passages of the wick with an air passage that communicates the interior of the fuel tank with the outside air during burning.
2. 2. - A liquid fuel burner comprising a wick for burning liquid fuel sucked or pulled by capiiarity from a fuel tank, characterized in that the wick is divided into two segments, and at least one of which is movable to make contact and separate from the other, the liquid fuel is supplied from one segment to the other during the contact and the fuel supply is cut off during the separation, to limit the period of burning or combustion, and an air passage communicates inside the tank? fuel with the external air, how much less? uring the burning, and is provided in a place separate from the fuel passages of the wick.
3. 3. A liquid fuel lighter according to claim 1 or 2, characterized in that it comprises a closing hood opening and closing to prevent ia vaporization of the fuel by sealing a flame producing section of the wick and opening the air passage to the external air is formed to communicate with a sealed space when the closure hood is in a closed state.
4. 4. A liquid fuel lighter according to claim 1, characterized in that it comprises an opening and closing hood to prevent vaporization of the fuel by sealing a flame-producing section of the wick and an opening of the air passage to the air. The external form is formed by being closed by a sealing end of the closing hood in the closed state.
5. 5. A liquid fuel lighter according to claim 2, characterized in that it comprises a closing hood opening and closing to prevent vaporization of the fuel by sealing a section producing fiama of the wick and a closure member of the passage of air that opens and closes an opening of the air passage to the external air simultaneously with the operation of the hood and closure to open or close the fiama-producing section of the wick.
6. 6. A liquid fuel lighter according to claim 1 or 2, characterized in that the passage of air is constituted by a space along a wick retainer provided to surround the external periphery of the wick or as a slot formed on the internal surface hold of wick.
7. 7. A liquid fuel lighter according to claim 1 or 2, characterized in that the air passage is constituted by arranging a capillary tube along the wick.
8. 8. A liquid fuel lighter according to claim 1 or 2, characterized in that the air passage is constituted as a slot formed in the wick.
9. 9. A disposable liquid fuel lighter characterized in that it comprises: a fuel tank constituted as a sealed structure loaded with fiber material and containing but not being re-ignited again, a liquid fuel, a wick one of whose ends is a section of pulled or suction inserted into the fuel tank to make contact with the fiber material and lift the liquid fuel by a capillary effect and whose other end is a flame producing section retained by a wick retainer to project from the upper part of the fuel. fuel tank, a closing hood opening and closing to seal at least the flame-producing section of the wick by means of an interposed sealing member, an ignition means installed near the wicking section of the wick to ignite the section producer of fiama, and a passage of air capable of communicating inside and outside the fuel tank through a separate portion of the fuel passages of the wick.
10. 10. - A liquid fuel lighter characterized in that it comprises a wick provided on an upper wall portion of a fuel tank for stopping liquid fuel and adapted to burn liquid fuel pulled therethrough. a means and ignition to ignite the wick provided in the upper wall portion of the fuel tank, an air passage that communicates the interior of the fuel tank with the external air at least during the burning and that is provided in a separate place from the fuel passages of the wick; a hood for sealing an upper end of the fuel tank from which the wick and the ignition means protrude through a straight path along the direction where the wick protrudes to fit and cover the upper end of the fuel tank from above, and a ring-0, packing or other convenient sealing means interposed in the sealing portion of the hood.
11. 11. A liquid fuel lighter according to claim 10, characterized in that, the member of The seal is interposed between an outer peripheral portion of the fuel tank and the hood.
12. 12. A liquid fuel lighter according to claim 10, characterized in that the hood is internally equipped with an internal hood that is operated in unison with an operation of joining / separating the hood to or from the fuel tank to seal the wick by means of an interposed sealing member.
13. 13. - A liquid fuel lighter according to claim 10, characterized in that the inner hood of the hood is guided to seal the wick by a peripheral adjustment portion between the fuel tank and the hood during the union / separation of the hood. hood or fuel tank.
14. 14. A liquid fuel lighter according to claim 12 or 13, characterized in that the inner hood is attached to the hood by means of an elastic member that allows sealing of the wick with the sealing member kept under pressure.
15. 15. A liquid fuel lighter according to claim 12 or 13, characterized in that the internal hood is arranged eccentrically with respect to the hood and with a surface orthogonal to the direction of separation separation in a peripheral adjustment portion of the hood the fuel tank is shaped to present a radial asymmetric directionality.
16. 16.- A lighter liquid fuel according to claim 12 or 13, characterized in that the inner hood is arranged eccentrically with respect to the hood and a surface orthogonal to the direction of union / separation in a portion of peripheral adjustment of the hood and the fuel tank is formed to have a radial symmetry.
17. 17. A liquid fuel lighter according to claim 10 or 12, characterized in that the hood and the fuel tank are connected by a strip, chain or other connecting member.
18. 18. A liquid fuel lighter according to claim 10 or 12, characterized in that at the upper end of the fuel tank there is provided around at least in part of its outer periphery a peripheral wall projecting upwards.
19. 19. A fuel ignition ignition according to claim 10 or 12, characterized in that it comprises a guide member for sliding guiding the hood in the direction of union / separation with respect to the fuel tank. and also allows the hood to move over the wick and the ignition means to a retracted position after it has moved to or beyond the position where it is uncoupled from the fuel tank.
20. 20. - A liquid fuel lighter according to claim 19, characterized in that the guide member is constituted as a bar member to guide the hood in the direction of union / separation with respect to the fuel tank to a position where a lower end of the hood is higher than the wick tip portions and the ignition means, the bar member is connected to the hood at a point distant from its center and the hood is adapted to rotate to the retracted position around the member from the bar
21. 21. A liquid fuel lighter according to claim 19, in that the guide member is provided halfway with a hinge and the hood is movable to the retracted position by oscillating in an upper arc around the hinge or hinge.
22. 22. A lighter fuel ignition according to claim 19, characterized in that the energizing means are provided to guide the hood from a sliding position in the guide member to the retracted position.
23. 23. A liquid fuel lighter according to any of claims 10 to 13, characterized in that it comprises: a wick provided in an upper wall portion of the fuel tank for stopping liquid fuel and adapted to burn liquid fuel pulled sucked through; an ignition means for igniting the wick provided in the upper wall portion of the fuel tank; a passage of air that communicates the interior of the fuel tank with the external air at least during the burning, which is provided in a separate place from the fuel passages of the wick, and. a hood for sealing an upper end of the fuel tank from which the wick and the ignition medium protrude as it traverses a straight path along the direction in which the wick protrudes, to fit over and cover the upper end of the tank Fuel from above; the wick is divided into two segments, and at least one is movable to contact and separate from the other, ex-fuel is supplied from one segment to the other during the contract and the fuel supply is cut off during the separation.