JP4710828B2 - Liquid fuel burner wick - Google Patents

Description

【Technical field】
[0001]
The present invention relates to a core of a liquid fuel combustion instrument in which a core moves in the vertical direction and burns liquid fuel vaporized in a combustion section provided at the upper end of the core.
[Background technology]
[0002]
The conventional core shown in FIG. 1 to FIG. 3 of Japanese Utility Model Publication No. 57-44164 (Patent Document 1) and FIG. 1 to FIG. 4 of Japanese Utility Model Publication No. 61-33366 (Patent Document 2) A fuel suction core having a function of sucking up liquid fuel and a heat-resistant core having heat resistance connected above the fuel suction core are provided. The heat-resistant core portion is arranged on the upper side of the fuel suction core portion, sucks up the fuel sucked up by the fuel suction core portion, and is formed continuously with the suction portion and supplied through the suction portion. And a combustion section for vaporizing and burning the liquid fuel. This core is disposed in a core housing cylinder having an upper opening provided in the oil burning appliance. At the time of combustion, the lead is raised upward, and the burning part of the lead is protruded upward from the upper opening of the lead containing cylinder. When the fire is extinguished, the lead is lowered and the burning part of the lead is accommodated in the lead accommodating cylinder.
[0003]
The heat-resistant core part of the conventional core shown in these two publications has a structure in which a warp component and a weft component are knitted. The warp constituting portion is formed by arranging a pair of yarn bundles composed of two warp yarns so that the folded portion is repeatedly formed at the upper position and the lower position, and then the upper position In FIG. 1, the folded portion of one warp yarn located outside is cut at a predetermined cutting position. At the time of combustion, the combustion portion protruding upward from the upper opening of the core housing cylinder is a cut end portion of one warp thread located on the outside cut by the folded portion at the upper position, and the remaining located on the inside The folded portions of the single warp yarn are alternately arranged in the horizontal direction (see Japanese Utility Model Publication No. 61-33366, FIGS. 3 and 4). In addition, the weft constituting portion is knitted with a yarn bundle constituting the warp constituting portion, and is composed of a plurality of weft yarns that are arranged at intervals in the vertical direction and extend in the transverse direction. One of the plurality of weft yarns located at the uppermost position is arranged so as to extend in the transverse direction of the warp yarn constituting portion at a position below the folded portion of the remaining one warp yarn. (See FIG. 3 of Japanese Utility Model Publication No. 61-33366).
[0004]
In the conventional core, the vaporizing portion that vaporizes the fuel in the combustion portion is configured by breaking the cut end portion of the warp yarn. And the folding part of the inner warp yarn located between the cut ends of the warp yarns forms a predetermined space between the cut ends of the warped yarns. The tar contained in the fuel adheres to the cut end portion that has been broken, and the volume of the portion increases. When the core is housed in the core housing cylinder, the attached tar becomes an obstacle. However, in the conventional structure, the volume increased due to the adhesion of tar escapes into the aforementioned space. As a result, even if the amount of tar attached increases, it is possible to prevent a situation in which the burning part of the wick does not enter the wick accommodating cylinder and the fire extinguishing operation cannot be performed.
[Patent Document 1]
Japanese Utility Model Publication No. 57-44164 FIG. 1 to FIG. 3 [Patent Document 2]
Japanese Utility Model Publication No. 61-33366 FIG. 1 to FIG. 4
[Problems to be solved by the invention]
[0005]
However, in the conventional structure, in order to form the above-mentioned space, the volume of the fuel vaporizing portion (the portion formed by breaking the cutting end portion) is reduced, and the combustion amount can be increased. Can not. Therefore, when tar begins to adhere to the combustion part, there arises a problem that the amount of combustion is greatly reduced.
[0006]
An object of the present invention is to provide a wick for a liquid fuel combustion device that does not significantly reduce the amount of combustion even if tar adheres, and that can accommodate the combustion part in the wick housing cylinder. is there.
[0007]
Another object of the present invention is to provide a liquid fuel burning instrument core capable of achieving the above object with a structure that is easy to manufacture.
[0008]
Another object of the present invention is to provide a core for a liquid fuel burning instrument in which the amount of combustion can be set by the structure itself.
[Means for Solving the Problems]
[0009]
The liquid fuel combustion instrument core of the present invention includes a fuel suction core having a function of sucking up liquid fuel upward, and a heat-resistant core. The heat-resistant core portion is arranged on the upper side of the fuel suction core portion, the suction portion sucking up the fuel further sucked up by the fuel suction core portion, and formed continuously with the suction portion and supplied through the suction portion. And a combustion section that vaporizes and burns liquid fuel. The core of the present invention is disposed in a core housing cylinder having an upper opening provided in an oil combustion appliance, and is used with the combustion section protruding upward from the upper opening of the core housing cylinder during combustion. Moreover, the heat resistant core part is comprised in the state by which the warp component and the weft component were knitted. The warp component is composed of a plurality of warp yarns arranged side by side, and the combustion portion is composed of an end portion formed by cutting a plurality of warp yarns. Further, the weft constituting portion is knitted with a plurality of yarn bundles constituting the warp constituting portion, and is composed of a plurality of weft yarns that are arranged at intervals in the vertical direction and extend in the transverse direction. In the present specification, “vertical direction” means a vertical direction when the core is used in an oil burning appliance, and “lateral direction” means a direction intersecting or orthogonal to the “vertical direction”.
[0010]
In such a basic configuration, in the present invention, one of the plurality of weft yarns located at the uppermost position is arranged so as to extend in the lateral direction in the intermediate region of the combustion portion of the heat resistant core. Conventionally, in order to increase the amount of vaporization and not to reduce the amount of vaporization over a long period of time, it is preferable that a plurality of warp yarns constituting the combustion portion spread in the lateral direction (not constrained). It was common sense of those skilled in the art. However, the inventor considered that there is no need to stick to such common sense if the number of warp yarns constituting the combustion section increases and the fuel supplied to the combustion section increases. And if it judges from conventional common sense, it researched restricting the spread to the horizontal direction of the warp in the combustion part considered to be unpreferable. As a result of research, the uppermost single weft yarn is arranged so that the intermediate region of the combustion part of the heat-resistant core part extends in the transverse direction, thereby restricting the spread of the warp yarn in the transverse direction in the combustion part. However, the inventors have found that the amount of adhered tar can be reduced without significantly reducing the amount of vaporization, and that the decrease in the amount of vaporization can be prevented over a long period of time. The position of the uppermost one weft is appropriately determined according to the amount of fuel supplied through the suction part. Specifically, the position of one weft is not greatly hindered by the accumulation of tar from the vaporization of fuel from the tip of the combusting section, and even if tar adheres to the position of one weft, the combusting section Is a position where only tar that can be displaced in the vertical direction in the core housing cylinder is attached.
[0011]
According to the configuration of the present invention, tar adheres to the vicinity of the weft yarn located in the intermediate region of the combustion section. The tar adhesion amount is smaller than that in the case where the uppermost one weft is disposed above or below the intermediate region. In addition, even if tar adheres, the presence of the weft yarns restricts the spread of the plurality of warp yarns constituting the combustion portion in the lateral direction, which may cause a situation in which the combustion portion cannot be accommodated in the core housing cylinder. Can be effectively suppressed.
[0012]
The position of one weft is preferably set within a range of 5 ± 1.5 mm from the tip of the combustion part when the quality of the fuel is poor (when the tar component contained in the fuel is large). . Beyond this range, the amount of vaporization decreases and tar adheres to the tip of the core, making it difficult to ignite. Below this range, although the amount of vaporization increases, the presence of tar adhering to the combustion part spreading in the lateral direction increases the possibility of becoming an obstacle when the combustion part is housed in the core housing cylinder.
[0013]
As the warp component, after one or more sets of yarn bundles constituted by arranging a plurality of warp yarns are folded back many times so that the folded portion is repeatedly formed at the upper position and the lower position, It is preferable that the folded portion at the upper position is cut at a predetermined cutting position to form a combustion portion. The warp component having such a structure can be easily made using a known Russell knitting machine. Further, with this structure, the fuel sucked up from the fuel sucking core can be smoothly guided to the combustion part. In this case, if the core portion for sucking up the fuel is structured so as to be knitted with a Russell knitting machine, the core can be easily manufactured using existing equipment.
[0014]
It should be noted that one warp located on the innermost side in the folded portion at the above-mentioned upper position or a plurality of warp yarns including this one warp and adjacent to this one warp are positioned more than the cutting position. It is preferable to fold back at a lower position. Thus, if the warp yarn which comprises the folding | turning part in an upper position is left in the position below the cutting position, a space will be formed above the folding part of the remaining warp yarn. If the number and width dimensions of the spaces are appropriately determined, the amount of fuel supplied from the suction unit to the combustion unit can be adjusted. Therefore, the structure of the fuel suction core is designed to absorb the fuel as much as possible. In the heat-resistant core, the amount of vaporization in the combustion part can be reduced by appropriately determining the number of spaces and the width dimension. It can be adjusted by the structure of the core.
[0015]
In addition, one warp located on the innermost side in the folded portion that appears every n (n is a positive integer of 1 or more) among the plurality of folded portions in the upper position is folded at a position below the cutting position. One or more warp yarns included in one warp yarn may be folded back at a position closer to the cutting position than the folding position of the remaining plurality of warp yarns excluding the one or more warp yarns. In this case, the number of spaces can be determined by arbitrarily determining the value of n. This n is preferably determined so that when the fuel sucked up by the fuel sucking core is supplied from the sucking part of the heat-resistant core to the combustion part, it is limited to an amount close to the optimum amount for combustion in the combustion part. .
[0016]
In addition, one warp located at the innermost side in the folded portion at the upper position is folded back at a position lower than the cutting position, and one or more warps contained in the one warp are also one or more. The remaining plurality of warp yarns excluding the warp yarns are folded back at a position closer to the cutting position than the folding back position. Then, the one warp and the one weft located at the uppermost position are knitted. If it does in this way, the function in which one warp thread | yarn will hold | maintain the one weft thread located in the uppermost part will be exhibited, and it can prevent this one weft thread | yarn coming out from a cutting part.
[0017]
The number of yarn bundles used for constituting the warp constituting portion is arbitrary. For example, in a state in which two sets of yarn bundles are arranged side by side, a large number of folded portions are repeatedly formed so that the folded portion is repeatedly formed at the upper position and the lower position, and then the folded portion at the upper position is cut in a predetermined manner. You may make it cut | disconnect in a position and form a combustion part. If it does in this way, manufacture of a core part becomes easy.
[Brief description of the drawings]
[0018]
FIG. 1 is a schematic perspective view of a core for a liquid fuel combustion instrument according to an embodiment.
FIG. 2 is a partially cutaway cross-sectional view showing an enlarged main part of the internal structure of the oil burning appliance in a state where the core according to the present embodiment is attached to the oil burning appliance.
FIG. 3 is a further enlarged view of the main part shown in FIG. 2;
FIG. 4 is an enlarged view showing a part of the heat-resistant core part of the core and a part of the fuel suction core part in the middle of the manufacturing process in order to explain the structure of the core and the manufacturing process of the core. is there.
FIG. 5 is an enlarged view showing a state after cutting at the cutting position shown in FIG. 4;
BEST MODE FOR CARRYING OUT THE INVENTION
[0019]
Hereinafter, an embodiment of the core for a liquid fuel combustion instrument of the present invention will be described in detail with reference to the drawings. FIG. 1: has shown the schematic perspective view of an example of embodiment which applied the core for liquid fuel combustion appliances of this invention to the core 1 for petroleum combustion appliances. The core 1 includes a cylindrical fuel suction core portion 3 having a function of sucking liquid fuel upward, and a cylindrical heat-resistant core portion 5. A reinforcing tape 7 is attached to the entire periphery of the connecting portion connecting the fuel suction core portion 3 and the heat-resistant core portion 5. A drive pin 9 (see FIG. 3) constituting a part of a drive mechanism for moving the lead 1 in the vertical direction from above the reinforcing tape 7 is fixed to the lead 1. That is, the drive pin 9 is attached to the surface of the tape 7.
[0020]
FIG. 2 is a partially cutaway cross-sectional view showing an enlarged main part of the internal structure of the oil burning appliance in a state where the core 1 of the present embodiment is attached to the oil burning appliance, and FIG. 3 is shown in FIG. It is the further enlarged view of the principal part made. As shown in FIG. 2, the oil combustion appliance includes an oil tank 15 including a bottom wall portion 11 and a main body portion 13. In the oil tank 15, kerosene replenished from an oil cartridge (not shown) is stored while maintaining a predetermined liquid level. A core outer cylinder 19 constituting a part of the core housing cylinder 17 is fixed to the main body portion 13 of the oil tank 15 with a packing 18 interposed therebetween, and a core housing cylinder is disposed on the bottom wall portion 11 of the oil tank 15. The core inner cylinder 21 constituting the remaining part of 17 is fixed. Inside the core outer cylinder 19 is housed a drive mechanism 23 for engaging the drive pin 9 and moving the core 1 in the vertical direction. The driving force of the driving mechanism 23 is generated by rotating the rotary core up / down handle 25. Since the configuration of the drive mechanism 23 is well known, the description thereof is omitted. An outer flame cylinder support portion 20 that is bent outwardly and supports the lower end portion of the outer flame cylinder 27 of the combustion cylinder is integrally formed at the upper end portion of the core outer cylinder 19. Further, an inner flame cylinder support portion 22 that is bent inward and supports the lower end portion of the inner flame cylinder 29 of the combustion cylinder is integrally formed at the upper end portion of the core inner cylinder 21.
[0021]
The state shown in FIG. 2 is a state in which the combustion part 5 </ b> B located at the tip of the core 1 protrudes upward from the upper opening 16 of the core housing cylinder 17 during combustion. At the time of fire extinguishing, the lead up / down handle 25 is rotated in the reverse direction to lower the lead 1 downward, and the combustion part 5B is accommodated in the lead accommodating cylinder 17. Although not shown in the figure, this oil burning instrument automatically extinguishes fire by automatically pulling the core 1 into the core housing cylinder 17 when an earthquake occurs or the oil burning instrument falls down. It has an automatic fire extinguishing mechanism. Since the structure of this automatic fire extinguishing mechanism is well-known, description is abbreviate | omitted.
[0022]
Next, the structure of the oil burning instrument core 1 of the present embodiment will be described. FIG. 4 is an enlarged view of a part of the heat-resistant core 5 of the core 1 and a part of the fuel suction core 3 in the middle of the manufacturing process in order to explain the structure of the core 1 and the manufacturing process of the core. FIG. The heat-resistant core portion 5 is disposed on the upper side of the fuel suction core portion 3 and is formed continuously with the suction portion 5A and the suction portion 5A that sucks the fuel sucked up by the fuel suction core portion 3 upward. A combustion section 5B that vaporizes and burns the liquid fuel supplied through the section 5A.
[0023]
The fuel suction core 3 is configured in a state in which a warp component 31 and a weft component 33 made of cotton yarn are knitted by a Russell knitting machine. As shown in FIG. 1, the weft component 33 is knitted with the warp component 31 in the upper region near the heat-resistant core 5 and the region near the lower end, and in the middle region, the warp component 31. Only exist. In the warp constituting portion 31, two or more sets of yarn bundles 35A and 35B configured by arranging a plurality of warp yarns 32 are arranged so that folded portions 37 and 39 (FIG. 1) are arranged at an upper position and a lower position. A large number of diffraction patterns are formed so as to be repeatedly formed. The weft constituting portion 33 is knitted with two sets of yarn bundles 35A and 35B constituting the warp constituting portion 31. The plurality of wefts 34 constituting the weft constituting portion 33 are arranged at intervals in the vertical direction and extend in the lateral direction. In this example, the weft 34 is knitted with two sets of yarn bundles 35A and 35B constituting the warp constituting portion 31 by so-called chain knitting.
[0024]
Further, the heat-resistant core portion 5 is configured in a state where warp yarn constituting portions 41 and weft yarn constituting portions 43 each made of glass fiber yarn are knitted by a Russell knitting machine. Both the fuel suction core 3 and the heat-resistant core 5 are connected by a connecting weft 40. When making the warp yarn constituting portion 41, first, two sets of yarn bundles 45A and 45B, each of which is constituted by arranging a plurality of warp yarns 42, are folded back at an upper position and a lower position. Are repeatedly diffracted in a meandering manner so that is repeatedly formed. At the same time, the weft component 43 is also formed. Then, the folding | returning part 47 in an upper position is cut | disconnected along the predetermined cutting position CL, and the combustion part 5B is formed. In the present embodiment, one warp yarn 42A located on the innermost side in the folded portion 47 at the upper position is folded at a position below the cutting position CL. In this embodiment, the warp yarn 42A is knitted (entangled) with a weft yarn 44B, which will be described later, at the position of the folded portion of the one warp yarn 42A. One or more warp threads 42a are folded back at a position closer to the cutting position CL than the folding position of the remaining plurality of warp threads 42b excluding the one or more warp threads 42a. The single warp yarn 42a and the one uppermost weft yarn 44A, which will be described later, are knitted (or entangled). In the present embodiment, one warp yarn 42A is folded at a position below the cutting position CL, but a plurality of warp yarns 42 may be folded at a position below the cutting position. In that case, one warp yarn among the plurality of warp yarns 42 is entangled with one weft yarn 44A located at the uppermost position, and the remaining warp yarn 42 is entangled with the second weft yarn 44B. May be.
[0025]
In the present embodiment, one warp yarn 42a is entangled with the weft yarn 44A, but a plurality of warp yarns may be entangled with the weft yarn 44A.
[0026]
The weft constituting portion 43 is formed by knitting five weft yarns 44A to 44E by so-called chain knitting with yarn bundles 45A and 45B constituting the warp constituting portion 41. The five weft yarns 44 </ b> A to 44 </ b> E are arranged at intervals in the vertical direction, and extend in the lateral direction intersecting or orthogonal to the direction in which the warp yarn 42 extends. In order to form the combustion part 5B, the folded part 47 at the upper position is cut at the cutting position CL shown in FIG. FIG. 5 shows an enlarged view after cutting. The ends of the cut warp yarns 42 are naturally unwound, and the end portions of the warp yarns 42 positioned above the weft yarns 44A in the combustion section 5B are in the state of fine glass fiber brushes. Moreover, the shape of the folding | returning part 49 of the downward position of the warp component 41 of the heat resistant core part 5 and the folding | returning part 37 of the upper position of the fuel suction core part 3 is determined so that the contact area of both may be increased. Specifically, the yarn bundle 45B and the yarn bundle 35A are in contact with each other over a longer distance. That is, in the folded portion of the yarn bundle 45B, the folded shape of the yarn bundle 45B is determined so that one warp yarn in the yarn bundle 45B that contacts the yarn bundle 45A contacts itself. Similarly, in the folded portion of the yarn bundle 35A in the fuel suction core 3, the yarn bundle 35A of the yarn bundle 35A is brought into contact with itself so that one warp yarn of the yarn bundle 35A contacting the yarn bundle 35B contacts itself. The folded shape is defined. The two weft yarns 40 are knitted by chain knitting with the folded portion of the yarn bundle 45B and the folded portion of the yarn bundle 35A.
[0027]
In the basic configuration as described above, in the present invention, the uppermost one of the five weft yarns 44A to 44E is disposed in the middle region of the combustion portion 5B of the heat resistant core portion 5 in the lateral direction. It is arranged so as to extend. If it does in this way, the spread to the horizontal direction of the warp in the combustion part 5B will be controlled somewhat. However, the inventors have found that, when such a configuration is adopted, the amount of tar adhered can be reduced without significantly reducing the amount of vaporization, and the reduction in the amount of vaporization can be prevented over a long period of time. The position of the one weft 44A located at the uppermost position is appropriately determined according to the amount of fuel supplied through the suction portion. Specifically, the position of one weft 44A is assumed that the accumulation of tar does not significantly inhibit the vaporization of fuel from the tip of the combustion section 5B, and the tar is attached to the position of one weft 44A. Also, the combustion portion 5B is a position where only tar that can be displaced in the vertical direction in the core housing cylinder 17 adheres. A more specific position of the single weft 44A is a position within a range of 5 ± 1.5 mm from the tip of the combustion part when the quality of the fuel is poor (when the tar component contained in the fuel is large). It is preferable to do. Beyond this range, the amount of vaporization decreases and the amount of tar attached increases. Below this range, although the amount of vaporization increases, the presence of tar adhering to the combustion part 5B spreading in the lateral direction increases the possibility of becoming an obstacle when the combustion part 5B is housed in the core housing cylinder 17. .
[0028]
According to the structure of the present embodiment, tar contained in the fuel adheres to the vicinity of the weft yarn 44A located in the intermediate region of the combustion portion 5B. In such a case, it was confirmed by a test that the amount of attached tar is reduced as compared with the case where the weft yarn 44A is disposed above or below the intermediate region. Even if tar adheres, the presence of the weft yarns 44 </ b> A restricts the spread of the plurality of warps 42 constituting the combustion portion 5 </ b> B in the lateral direction, so that the combustion portion 5 </ b> B cannot be accommodated in the core housing cylinder 17. It is possible to effectively suppress the occurrence of the situation. Moreover, if the warp yarn 45B which comprises a part (42A) of the folding | returning part 47 in an upper position is left in the position below the cutting position CL like this Embodiment, the remaining warp yarn (42A) will be left. A space S is formed above the folded portion. If the number and width dimensions of the spaces S are appropriately determined, the amount of fuel supplied from the suction unit 5A to the combustion unit 5B can be adjusted. Therefore, the structure of the fuel sucking core 3 is designed so that the fuel can be sucked up as much as possible. In the heat resistant core 5, the number of the spaces S and the width dimension are appropriately determined, so that the combustion section 5B. The amount of vaporization in can be adjusted by the structure of the core.
[0029]
In the present embodiment, the warp yarn 42A that is not cut at the cutting position CL is left in all of the plurality of folded portions 47 at the upper position, but every n (n is a positive integer of 1 or more). One warp yarn located at the innermost side in the turn-up portion 47 appearing in FIG. 2 is folded at a position below the cutting position, and one or more warp yarns included in one warp yarn are excluded from the one or more warp yarns. You may make it return in the position near cutting position CL rather than the return position of the remaining several warp yarn. In this case, the number of the spaces S can be determined by arbitrarily determining the value of n. This n is limited to an amount close to the optimum amount for combustion in the combustion portion 5B when the fuel sucked up by the fuel suction core portion 3 is supplied from the suction portion 5A of the heat-resistant core portion 5 to the combustion portion 5B. It is preferable that
[0030]
In the above embodiment, two sets of yarn bundles are used to form the warp constituting portion 41. Theoretically, the number of sets of yarn bundles used to constitute the warp constituting portion 41 (m) Is optional.
[0031]
In the above-described embodiment, the portion up to the folded portion of the warp yarn 42b constitutes the combustion portion 5B that protrudes upward from the upper opening 16 of the core housing cylinder 17. However, it is not always necessary that the folded portion of the warp yarn 42b protrudes upward from the upper opening 16 of the core housing cylinder 17. In some cases, of course, the folded portion of the warp yarn 42b may be positioned in the core housing cylinder 17 during combustion. In the present embodiment, the second weft yarn 44B from the top is in a position substantially coincident with the upper opening 16 of the core housing cylinder 17, but the second weft 44B is located above the upper opening 16. Even if it is slightly exposed, there is no substantial problem.
[Industrial applicability]
[0032]
According to the present invention, it is possible to reduce the amount of tar adhering to the combustion part of the wick and to effectively suppress the occurrence of a situation in which the combustion part cannot be accommodated in the wick accommodating cylinder. Even in this case, there is an advantage that the core can be used for a long time.

Claims (6)

A fuel suction core having a function of sucking liquid fuel upward;
The liquid fuel disposed on the upper side of the fuel sucking core and sucking up the fuel sucked up by the fuel sucking core further upward and the liquid fuel supplied continuously through the sucking unit A heat-resistant core portion having a heat resistance with a combustion portion that vaporizes and burns,
A liquid fuel combustion instrument core that is disposed in a core housing cylinder of a liquid fuel combustion instrument and is used by projecting the combustion part upward from an upper opening of the core container cylinder during combustion,
The heat-resistant core is configured in a state in which a warp component and a weft component are knitted,
The warp yarn constituting portion is formed by bending a plurality of sets of one or more yarn bundles formed by arranging a plurality of warp yarns so that a folded portion is repeatedly formed at an upper position and a lower position. The folded portion at a position is configured to be cut at a predetermined cutting position to form the combustion portion,
Each of the weft constituting portions is composed of a plurality of weft yarns that are arranged at intervals in the vertical direction and extend in the transverse direction,
The weft component part is knitted with the one or more yarn bundles constituting the warp component part,
One of the plurality of weft yarns located at the uppermost position is disposed so as to extend in the lateral direction in the intermediate region of the combustion portion of the heat-resistant core,
The one warp located on the innermost side in the folded portion at the upper position is folded at a position below the cutting position;
One or more warp yarns included in the one warp yarn are folded back at a position closer to the cutting position than the folding position of the remaining plurality of warp yarns excluding the one or more warp yarns,
The core for a liquid fuel combustion instrument, wherein the one weft yarn is knitted with the one or more warp yarns. A fuel suction core having a function of sucking liquid fuel upward;
The liquid fuel disposed on the upper side of the fuel sucking core and sucking up the fuel sucked up by the fuel sucking core further upward and the liquid fuel supplied continuously through the sucking unit A heat-resistant core portion having a heat resistance with a combustion portion that vaporizes and burns,
A liquid fuel combustion instrument core that is disposed in a core housing cylinder of a liquid fuel combustion instrument and is used by projecting the combustion part upward from an upper opening of the core container cylinder during combustion,
The heat-resistant core is configured in a state in which a warp component and a weft component are knitted,
The warp yarn constituting portion is formed by bending a plurality of sets of one or more yarn bundles formed by arranging a plurality of warp yarns so that a folded portion is repeatedly formed at an upper position and a lower position. The folded portion at a position is configured to be cut at a predetermined cutting position to form the combustion portion,
Each of the weft constituting portions is composed of a plurality of weft yarns that are arranged at intervals in the vertical direction and extend in the transverse direction,
The weft component part is knitted with the one or more yarn bundles constituting the warp component part,
One of the plurality of weft yarns located at the uppermost position is disposed so as to extend in the lateral direction in the intermediate region of the combustion portion of the heat-resistant core,
The warp yarn constituting portion is folded back many times so that the folded portion is repeatedly formed at the upper position and the lower position together with two or more sets of the yarn bundles arranged side by side. The folded portion in the upper position is configured to be cut at the predetermined cutting position to form the combustion portion,
The one warp located on the innermost side in the folded portion at the upper position is folded at a position below the cutting position;
One or more warp yarns included in the one warp yarn are folded back at a position closer to the cutting position than the folding position of the remaining plurality of warp yarns excluding the one or more warp yarns,
The core for a liquid fuel combustion instrument, wherein the one weft yarn is knitted with the one or more warp yarns. A fuel suction core having a function of sucking liquid fuel upward;
The liquid fuel disposed on the upper side of the fuel sucking core and sucking up the fuel sucked up by the fuel sucking core further upward and the liquid fuel supplied continuously through the sucking unit A heat-resistant core portion having a heat resistance with a combustion portion that vaporizes and burns,
A liquid fuel combustion instrument core that is disposed in a core housing cylinder of a liquid fuel combustion instrument and is used by projecting the combustion part upward from an upper opening of the core container cylinder during combustion,
The heat-resistant core is configured in a state in which a warp component and a weft component are knitted,
The warp yarn constituting portion is formed by bending a plurality of sets of one or more yarn bundles formed by arranging a plurality of warp yarns so that a folded portion is repeatedly formed at an upper position and a lower position. The folded portion at a position is configured to be cut at a predetermined cutting position to form the combustion portion,
Each of the weft constituting portions is composed of a plurality of weft yarns that are arranged at intervals in the vertical direction and extend in the transverse direction,
The weft component part is knitted with the one or more yarn bundles constituting the warp component part,
One of the plurality of weft yarns located at the uppermost position is disposed so as to extend in the lateral direction in the intermediate region of the combustion portion of the heat-resistant core,
Among the plurality of folded portions at the upper position, the one warp yarn located on the innermost side in the folded portion that appears every n (n is a positive integer of 1 or more) is lower than the cutting position. It is folded at the position
One or more warp yarns included in the one warp yarn are folded back at a position closer to the cutting position than the folding position of the remaining plurality of warp yarns excluding the one or more warp yarns,
The core for a liquid fuel combustion instrument, wherein the one weft yarn is knitted with the one or more warp yarns. A fuel suction core having a function of sucking liquid fuel upward;
The liquid fuel disposed on the upper side of the fuel sucking core and sucking up the fuel sucked up by the fuel sucking core further upward and the liquid fuel supplied continuously through the sucking unit A heat-resistant core portion having a heat resistance with a combustion portion that vaporizes and burns,
A liquid fuel combustion instrument core that is disposed in a core housing cylinder of a liquid fuel combustion instrument and is used by projecting the combustion part upward from an upper opening of the core container cylinder during combustion,
The heat-resistant core is configured in a state in which a warp component and a weft component are knitted,
The warp yarn constituting portion is formed by bending a plurality of sets of one or more yarn bundles formed by arranging a plurality of warp yarns so that a folded portion is repeatedly formed at an upper position and a lower position. The folded portion at a position is configured to be cut at a predetermined cutting position to form the combustion portion,
Each of the weft constituting portions is composed of a plurality of weft yarns that are arranged at intervals in the vertical direction and extend in the transverse direction,
The weft component part is knitted with the one or more yarn bundles constituting the warp component part,
One of the plurality of weft yarns located at the uppermost position is disposed so as to extend in the lateral direction in the intermediate region of the combustion portion of the heat-resistant core,
In the warp yarn constituting portion, the folded portion is repeatedly formed at the upper position and the lower position together with m (m is a positive integer of 2 or more) sets of the yarn bundles arranged side by side. The folded portion at the upper position after being folded back as many as described above is configured to be cut at the predetermined cutting position to form the combustion portion,
Among the plurality of folded portions at the upper position, the one warp yarn located on the innermost side in the folded portion that appears every n (n is a positive integer of 1 or more) is lower than the cutting position. It is folded at the position
One or more warp yarns included in the one warp yarn are folded back at a position closer to the cutting position than the folding position of the remaining plurality of warp yarns excluding the one or more warp yarns,
Wherein one of the liquid body fuel burner wick you characterized in that weft strip is knitted one or more warp yarns said. 5. The liquid fuel burning instrument core according to claim 4 , wherein the m is 2 and the n is 2. The n is limited to an amount close to the optimum amount for combustion in the combustion portion when the fuel sucked up by the fuel suction core portion is supplied from the suction portion of the heat-resistant core portion to the combustion portion. The core for a liquid fuel combustion instrument according to claim 3 or 4 , wherein the core is defined as follows.

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