JP2018124051A - Liquid fuel combustor and liquid fuel cartridge connecting mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid fuel combustor which can use a liquid fuel cartridge in which a liquid fuel is filled in advance.SOLUTION: A liquid fuel combustor 1 includes: a liquid fuel cartridge 3; an attachment 5; a liquid fuel tank 7; and a burner assembly 9. A plurality of protrusions 73 for engagement are provided on an inner wall part of a recess of the attachment 5. A plurality of grooves 35 are provided on an outer wall part of a valve seat body, and a projection 37 is provided in the grooves 35. A shape of an inner peripheral face of the groove and an outer peripheral face of the projection is defined so as to guide the protrusions 73 for engagement to a region between a first facing part 35A and a second facing part 37B of the outer peripheral face of the projection. When the valve seat body 17 is inserted into a recess 67 and a downward force is applied, the protrusions 73 for engagement reaches the region between the first facing part 35A and the second facing part 37B. when the downward force is released in this state, a prestressed part 21 for opening/closing presses the projection 37 against the protrusions 73 for engagement, thereby fixing the liquid fuel cartridge 3.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a liquid fuel combustor that burns liquid fuel in a liquid fuel tank with a burner, and a liquid fuel cartridge connection structure.

  A conventional liquid fuel combustor transfers purchased liquid fuel into a metal cartridge tank and burns the liquid fuel supplied from the cartridge tank to the liquid fuel tank with a burner.

  Therefore, in order to save the trouble of transferring the liquid fuel to the cartridge tank, it is considered to use a liquid fuel cartridge in which the liquid fuel is previously filled in a disposable container instead of the metal cartridge tank.

  Currently, various types of liquid fuel combustors are already on sale. Even in a liquid fuel combustor already sold, if the liquid fuel cartridge cannot be used, the spread of the liquid fuel cartridge cannot be expected.

  An object of the present invention is to provide a liquid fuel combustor that can use a liquid fuel cartridge that is pre-filled with liquid fuel.

  Another object of the present invention is to provide a liquid fuel combustor that can be easily attached and that the liquid fuel cartridge is unlikely to come off even when vibration or impact is applied to the liquid fuel combustor.

  It is another object of the present invention to provide a liquid fuel cartridge connection structure that enables the use of liquid fuel cartridges in various types of liquid fuel combustors.

  The liquid fuel combustor of the present invention includes a liquid fuel cartridge, a liquid fuel tank, an attachment, and a burner assembly.

  The liquid fuel cartridge includes a cartridge body and an opening / closing valve assembly attached to a fuel discharge port of the cartridge body, and the opening / closing valve assembly includes a valve seat body including a valve seat, and a valve member that cooperates with the valve seat. And an opening / closing energy storage component that generates a pressing force that presses the valve member against the valve seat in the released state.

  The liquid fuel tank includes a fuel supply port.

  The attachment is attached to the fuel supply port and is provided in the recess, the recess into which the valve seat body is fitted, the push-up pin that is provided in the recess and the valve seat body is fitted in the recess, and pushes up the valve body. And a fuel discharge hole through which the liquid fuel discharged from the liquid fuel cartridge into the recess is passed.

  The burner assembly burns liquid fuel in a liquid fuel tank.

  The inner wall portion of the concave portion of the attachment is provided with a plurality of engaging convex portions arranged at a predetermined pitch in the circumferential direction of the inner wall portion and protruding toward the inner side of the concave portion. A plurality of grooves that open to the outer side of the insertion direction of the valve body in the recess and the orthogonal direction orthogonal to the insertion direction are arranged at a predetermined pitch in the circumferential direction of the valve seat body, and the outer wall of the valve seat body A plurality of projecting portions that are respectively positioned in the plurality of groove portions and project in the orthogonal direction are disposed in the portion. The shape of the groove inner peripheral surface of the plurality of grooves and the protrusion outer peripheral surface of the plurality of protrusions is such that the engaging convex portion follows the groove inner peripheral surface or the protrusion outer peripheral surface in the process of inserting the valve seat body into the recess. When the valve seat body is further inserted into the recess while being guided and the valve seat body is further inserted into the recess, the first opposing portion of the inner peripheral surface of the groove and the second opposing portion of the outer peripheral surface of the protruding portion are opposed to each other in the insertion direction. When the pushing force toward the attachment is applied to the liquid fuel cartridge, the pressure is accumulated in the process of pushing the valve member away from the valve seat by the pushing pin, When the pushing-down force to the liquid fuel cartridge is released, an energy storage means is provided to release the projection so that the protrusion is pressed against the engaging projection.

  With this configuration, the liquid fuel cartridge can be attached to the liquid fuel combustor to which the attachment can be attached. In addition, the liquid fuel cartridge can be easily attached to the attachment, and the liquid fuel cartridge is not easily detached even if vibration or impact is applied to the liquid fuel combustor.

  The attachment recess is provided with a push-up energy storage component that is stored by a valve seat body inserted into the recess, and the energy storage means is constituted by an opening and closing energy storage component and a push-up energy storage component. May be.

  The energy storage means may be an energy storage component for opening and closing the liquid fuel cartridge.

The contour shape seen from the outer side in the orthogonal direction of the groove portion inner peripheral surface of the plurality of groove portions has a shape in which the dimension in the circumferential direction becomes smaller toward the first opposing portion of the groove portion inner peripheral surface,
The outline shape of the protrusion part outer peripheral surface of a some protrusion part may have a shape where the dimension of the circumferential direction becomes large as it goes to the 2nd opposing part of a protrusion part outer peripheral surface.

  The shape of the tip portion in the insertion direction of the wall portion located between two adjacent groove portions of the plurality of groove portions, the shape of the tip portion in the insertion direction of the projecting portion, and the shape of the engaging convex portion are such that the engaging convex portion is a wall. Each of the engaging convex portions may have a shape that slides into the groove portion when contacting the distal end portion in the insertion direction of the portion or the distal end portion in the insertion direction of the protrusion.

  The shape of the tip of the wall portion in the insertion direction and the shape of the tip of the protrusion in the insertion direction are such that the circumferential dimension gradually decreases toward the insertion direction, and is opposite to the insertion direction of the engaging convex portion. The shape of the tip portion in the drawing direction may have a shape in which the circumferential dimension gradually decreases in the drawing direction.

  The end surface in the pulling direction of the protruding portion may be a curved surface that is larger than the end surface in the inserting direction of the engaging convex portion and is curved so as to be convex in the inserting direction.

  The predetermined pitch may be 360 ° / N, and N may be an integer of 2 to 6. N is, for example, 4.

  The present invention can also be grasped as a liquid fuel cartridge connection structure. If the liquid fuel cartridge connection structure of the present invention is used, the liquid fuel cartridge can be used for an existing liquid fuel combustor. The liquid fuel cartridge connection structure of the present invention includes a cartridge body and an opening / closing valve assembly attached to a fuel discharge port of the cartridge body, and the opening / closing valve assembly cooperates with the valve seat body including the valve seat and the valve seat. A liquid fuel cartridge comprising: a valve body including a valve member that is configured to open; and an opening / closing energy storage component that generates a pressing force that presses the valve member against the valve seat in a released state, and a fuel supply port of the liquid fuel combustor And a liquid fuel cartridge coupling structure that is detachably coupled to the liquid fuel tank. Therefore, the liquid fuel cartridge coupling structure of the present invention is provided with a recess that is attached to the fuel supply port and in which the valve seat body is fitted, and in which the valve seat body is fitted in the recess. A push-up pin that pushes up and an attachment provided with a fuel discharge hole that is provided in the recess and through which the liquid fuel discharged from the fuel cartridge into the recess is passed. A plurality of engaging convex portions that are arranged at a predetermined pitch in the circumferential direction of the inner wall portion and project toward the inside of the concave portion are provided on the inner wall portion of the concave portion of the attachment. In addition, the outer wall of the valve seat body has a plurality of grooves that open to the outside in the orthogonal direction orthogonal to the insertion direction and orthogonal to the insertion direction, and the circumferential direction of the valve seat body. A plurality of projecting portions that are respectively positioned in the plurality of groove portions and project in the orthogonal direction are disposed on the outer wall portion of the valve seat body. The shape of the groove inner peripheral surface of the plurality of grooves and the protrusion outer peripheral surface of the plurality of protrusions is such that the engaging convex portion follows the groove inner peripheral surface or the protrusion outer peripheral surface in the process of inserting the valve seat body into the recess. When the valve seat body is further inserted into the recess while being guided and the valve seat body is further inserted into the recess, the first opposing portion of the inner peripheral surface of the groove and the second opposing portion of the outer peripheral surface of the protruding portion are opposed to each other in the insertion direction. It is stipulated to guide between. Further, when a push-down force toward the attachment is applied to the liquid fuel cartridge, energy is stored in the process of pushing the valve member away from the valve seat by the push-up pin, and the push-down force to the liquid fuel cartridge is released. And an accumulating means for releasing the projecting portion against the engaging convex portion.

It is the figure shown in the state which fractured | ruptured a part (front surface) of the liquid fuel combustor of this Embodiment. It is a figure of the liquid fuel cartridge of the sales state to which the cap was attached, (A) is a top view, (B) is a front view, (C) is CC sectional view, (D) is DD line It is sectional drawing. It is a perspective view of an on-off valve assembly. It is a disassembled perspective view of an on-off valve assembly. (A) is a plan view of the on-off valve assembly, (B) is a cross-sectional view taken along line BB, and (C) is a cross-sectional view taken along line CC. It is a perspective view of the cap attached to an on-off valve assembly. It is a perspective view of an attachment. It is a disassembled perspective view of an attachment. (A) (B) is a figure which shows the state which makes a liquid fuel cartridge engage with an attachment. (A) (B) is a figure which shows the state which makes a liquid fuel cartridge engage with an attachment. (A) (B) is a figure which shows the state which makes a liquid fuel cartridge engage with an attachment. (A) (B) is a figure which shows the state which makes a liquid fuel cartridge engage with an attachment. It is the XIII-XIII line end view shown in FIG.

  Embodiments of a liquid fuel combustor according to the present invention will be described below in detail with reference to the drawings.

[overall structure]
FIG. 1 is a diagram showing a part (front surface) of a liquid fuel combustor according to the present embodiment in a broken state. As shown in FIG. 1, the liquid fuel combustor 1 includes a liquid fuel cartridge 3, an attachment 5, a liquid fuel tank 7 having a fuel supply port 7 </ b> A, and a burner assembly 9.

  The burner assembly 9 burns liquid fuel (generally kerosene) in the liquid fuel tank 7. In the present embodiment, the burner assembly 9 includes a core vertical burner with a combustion amount of 2200 W.

  In the present embodiment, the structure other than the liquid fuel cartridge 3 and the attachment 5 is the same as the structure of a commercially available liquid fuel combustor. By attaching the attachment 5, the liquid fuel cartridge 3 can be attached to various types of commercially available liquid fuel combustors. In the present embodiment, the downward direction in the vertical direction of the paper surface of FIG. 1 is defined as the insertion direction ID of the liquid fuel cartridge 3. Also in other figures, the direction is defined by indicating the insertion direction ID.

[Liquid fuel cartridge]
The liquid fuel cartridge 3 will be described with reference to FIGS.

  2A is a plan view of the liquid fuel cartridge to which the cap 15 is attached, FIG. 2B is a front view of the liquid fuel cartridge, and FIG. 2C is C in FIG. 2B. -C sectional view, FIG.2 (D) is DD sectional view taken on the line of FIG. 2 (A). The liquid fuel cartridge 3 is filled with liquid fuel (eg, kerosene). The fuel-filled liquid fuel cartridges 3 are arranged in stores and sold to consumers. The liquid fuel cartridge 3 includes a resin cartridge main body 11 and an on-off valve assembly 13 attached to the fuel discharge port 11 </ b> A of the cartridge main body 11. A cap 15 is attached to the on-off valve assembly 13. The cartridge body 11 has a bottom portion 11B, a body base portion 11C continuous with the bottom portion 11B, and a central portion 11D continuous with the body base portion 11C. The main body base portion 11 </ b> C is formed with one fingertip fitting recess 11 </ b> E that is continuous in the circumferential direction and opens toward the outside, and into which a plurality of fingertips of the replacement operator are fitted. It should be noted that a hook into which one or more fingers of the replacement operator can be integrally formed on the outer surface of the bottom portion 11B.

  3 to 5 (A) to (C) are views showing the on-off valve assembly 13 removed from the cartridge body 11. 3 is a perspective view of the on-off valve assembly, FIG. 4 is an exploded perspective view of the on-off valve assembly, FIG. 5A is a plan view of the on-off valve assembly, and FIG. 5B is FIG. FIG. 5A is a cross-sectional view taken along line BB in FIG. 5A, and FIG. 5C is a cross-sectional view taken along line CC in FIG. The on-off valve assembly 13 includes a resin valve seat body 17, a resin valve body 19, an opening / closing energy storage component 21 made of a metal coil spring, and a resin restraining member 23. Of course, the opening / closing energy storage component 21 is not limited to metal, and may be made of resin.

  The valve seat body 17 has a bottom wall portion 25 in which a through-hole 29 through which liquid fuel passes is formed in the center, and a peripheral wall portion 27 rising from an outer edge portion of the bottom wall portion 25, and the bottom wall of the peripheral wall portion 27 An annular flange portion 28 is integrally formed at the end opposite to the portion 25. An annular valve seat 31 is formed around the through hole 29 formed in the bottom wall portion 25.

  The outer wall 33 of the peripheral wall 27 of the valve seat body 17 is formed with four grooves 35 and four protrusions 37 respectively disposed in the four grooves 35. The groove part 35 is opened to the outside in the orthogonal direction orthogonal to the insertion direction ID and the insertion direction ID. The contour shape of the groove portion inner peripheral surface 35a of the groove portion 35 when the groove portion 35 is viewed from the outer side in the orthogonal direction is a triangular shape having a bottom side on the bottom wall portion 25 side and decreasing in the circumferential direction toward the top portion. In the present embodiment, this top portion constitutes the first facing portion 35A of the groove inner peripheral surface 35a.

  The contour shape of the projecting portion outer peripheral surface 37a of the projecting portion 37 has a top portion (tip portion) 37A in the opening portion that opens in the insertion direction ID of the groove portion 35, and the dimension in the circumferential direction increases in the direction opposite to the insertion direction ID. It has a shape that increases and further decreases in the circumferential dimension as it goes in the direction opposite to the insertion direction ID. In the present embodiment, the end surface of the protruding portion 37 on the opposite side to the insertion direction ID constitutes the second facing portion 37B of the protruding portion outer peripheral surface 37a. The shape of the end surface of the protruding portion 37 constituting the second facing portion 37B is a slightly curved shape so as to be convex toward the insertion direction ID. The first facing portion 35A and the second facing portion 37B are in a positional relationship facing each other in the insertion direction. More specifically, the shape of the groove inner peripheral surface 35a of the plurality of groove portions 35 and the protrusion outer peripheral surface 37a of the plurality of protrusions 37 is a process in which the valve seat body 17 is inserted into the recess 67 of the attachment 5 described in detail later. Thus, the engaging convex portion 73 of the attachment 5 enters the groove portion 35 while being guided along the groove inner peripheral surface 35a or the protrusion outer peripheral surface 37a of the groove portion 35, and the valve seat body 17 is further inserted into the concave portion 67. In addition, the engaging convex portion 73 is defined to be guided between the first opposing portion 35A of the groove inner peripheral surface 35a and the second opposing portion 37B of the protruding portion outer peripheral surface 37a facing each other in the insertion direction.

  As shown in FIG. 5A, the four groove portions 35 and the four projecting portions 37 are arranged at a predetermined pitch in the circumferential direction. In the present embodiment, the pitch P, which is the angular interval between the top (35A) of the groove 35 and the top (35A) of the adjacent groove 35, and the angle between the top of the protrusion 37 and the top of the adjacent protrusion 37. The pitch P which is an interval is 360 ° / 4 = 90 °.

  The shape of the distal end portion 36A in the insertion direction ID of the wall portion 36 positioned between the two adjacent groove portions 35 and the shape of the distal end portion 37A in the insertion direction ID of the protruding portion 37 gradually increase toward the insertion direction ID. It has a shape in which the circumferential dimension is reduced. A pitch, which is an angular interval between the distal end portion 37A of the protruding portion 37 adjacent to the distal end portion 36A of the wall portion 36, is 360 ° / 8 = 45 °. Partial male screw portions 36B and 37C into which the cap 15 is screwed are formed on the surface of the wall portion 36 positioned between the two adjacent groove portions 35 and the four protruding portions 37.

  As shown in FIGS. 3 and 5A, two cap engaging portions 38 that engage with the cap 15 are formed near the flange portion 28 of the outer wall portion 33 of the valve seat body 17. . The two cap engaging portions 38 are formed at positions separated by 180 ° in the circumferential direction. The cap engaging portion 38 has an inclined portion 38A that gradually separates from the outer wall portion 33 in the orthogonal direction as it advances in the circumferential direction, and a flat portion 38B that is continuous with the inclined portion 38A.

  The valve seat body 17 is made by injection molding, and the parting line PL of the mold at the time of injection molding passes through the distal end portion 36A of the wall portion 36 as shown in FIG. The outer wall portion 33 is formed with a plurality of meat steals 33A for preventing sink marks.

  As shown in FIGS. 4, 5 </ b> B and 5 </ b> C, on the inner side (inner wall portion 34) of the peripheral wall portion 27 of the valve seat body 17, there is a pressing member engaged portion 34 </ b> A to which the pressing member 23 is fixed. A cartridge body engaged portion 34B that engages with the fuel discharge port of the cartridge body 11 is formed.

  The valve body 19 is provided at a position facing the valve body main body 39, the valve seat 31, a valve member 41 that cooperates with the valve seat 31, and a plurality of (on the outer wall portion of the valve body main body 39 ( In this example, 8) projecting portions 43 and a shaft portion 45 extending in the insertion direction ID from the center portion of the valve body main body 39 are provided. The liquid fuel passes through the valley portion 44 formed between the two adjacent protrusions 43 and the protrusions 43.

  In the state where the opening / closing energy storage component 21 is passed through the shaft portion 45, one end 21 </ b> A is in contact with the valve body main body 39 of the valve body 19, and the other end 21 </ b> B is in contact with the restraining member 23. The open / close energy storage component 21 generates a pressing force that presses the valve member 41 against the valve seat 31 in the released state.

  As shown in FIG. 4, the holding member 23 includes an energy storage component storage portion 47 for storing the opening / closing energy storage component 21, and an annular valve seat main body engagement portion formed around the energy storage component storage portion 47. 49, a shaft through hole 51 formed at the top of the energy storage component storage portion 47 through which the shaft portion 45 passes, and a fuel passage portion 53 through which the liquid fuel formed around the energy storage component storage portion 47 passes. I have. The valve seat main body engaging portion 49 engages with a restraining member engaged portion 34A [FIG. 5C] formed on the inner wall portion 34 of the valve seat main body 17, and is fixed to the valve seat main body 17. Become. The other end 21 </ b> B of the opening / closing energy storage component 21 is in contact with the periphery of the shaft through hole 51.

[cap]
FIG. 6 is a perspective view of the cap 15 attached to the on-off valve assembly 13 shown in FIGS. 3 to 5 as viewed from below. On the inner peripheral surface of the cap 15, there are two engaged portions that engage with the internal thread portion 55 that engages with the partial external thread portions 36 </ b> B and 37 </ b> C shown in FIG. 3 and the cap engagement portion 38 shown in FIG. A joint portion 57 is formed. The two engaged portions 57 are formed at positions separated by 180 ° in the circumferential direction. The engaged portion 57 has an inclined surface 57A that gradually separates from the inner peripheral surface toward the radially inner side of the cap 15 as it advances in the direction opposite to the rotation direction when the cap 15 is attached, and the end position of the inclined surface 57A. The flat surface 57B extends in the radial direction from the inner surface to the inner peripheral surface.

  Two finger press position indicating portions 59 are formed on the outer peripheral surface of the cap 15. The finger press position instruction section 59 is formed at a position shifted by 90 ° in the circumferential direction from the position where the two engaged parts 57 are formed, and the two finger press position instruction sections 59 are arranged in the circumferential direction. Are formed at positions 180 ° apart.

  The cap 15 is fitted into the on-off valve assembly 13, and the cap 15 is rotated in a state where the partial male screw portions 36 </ b> B and 37 </ b> C and the female screw portion 55 are screwed until the cap engaging portion 38 and the engaged portion 57 come into contact with each other. When the cap 15 is further rotated with respect to the on-off valve assembly 13 from there, the engaged portion 57 slides on the inclined portion 38A and the flat portion 38B of the cap engaging portion 38, and the engaged portion 57 It will get over the cap engaging portion 38. In this way, even if the cap 15 is rotated in the opposite direction, the engaged portion 57 engages with the cap engaging portion 38, so that a child or the like may accidentally open the liquid fuel cartridge 3. Preventing so-called child locks can be formed (see FIGS. 2C and 2D). When the liquid fuel cartridge 3 is opened, the cap 15 is placed in a state in which the finger pressing position indicating portions 59 are sandwiched between the fingers, the shape of the cap 15 is changed and the distance between the engaged portions 57 is increased. Is rotated in the opposite direction to the on-off valve assembly 13, the engaged portion 57 can get over the cap engaging portion 38 and the child lock can be released.

[attachment]
FIG. 7 is a perspective view of the attachment, and FIG. 8 is an exploded perspective view of the attachment. The attachment 5 is attached to the fuel supply port 7 </ b> A of the liquid fuel tank 7. The attachment 5 includes an attachment main body 61, a push-up energy storage component 63, and a partition plate 65. The attachment body 61 includes a recess 67 into which the valve seat body 17 is fitted, and a push-up pin 69 that is provided in the recess 67 and pushes up the valve body 19 in a state in which the valve seat body 17 is fitted into the recess 67. There are four fuel discharge holes 71 provided in the recess 67 through which the liquid fuel discharged from the liquid fuel cartridge 3 into the recess 67 is passed.

  The inner wall portion of the recess 67 is provided with a plurality of engaging protrusions 73 that are arranged at a predetermined pitch in the circumferential direction of the inner wall portion and protrude toward the inside of the recess. In the present embodiment, four engaging convex portions 73 are provided, and the pitch, which is the angular interval between the engaging convex portion 73 and the adjacent engaging convex portion 73, is 360 ° / 4 = 90 °. It is. The engaging convex part 73 has a shape in which the shape of the distal end part 73A in the drawing direction opposite to the insertion direction ID gradually decreases in the circumferential direction in the drawing direction.

  The push-up energy storage component 63 is provided around the push-up pin 69. The partition plate 65 is a ring-shaped member having a through hole 75 at the center, and is supported by the push-up energy storage component 63. In the state in which the push-up energy storage component 63 is released, the partition plate 65 is sandwiched between the push-up energy storage component 63 and the four engagement convex portions 73, and the four engagement convex portions 73. It is not located above the position of. When the liquid fuel cartridge 3 is engaged with the attachment 5, the valve seat main body bottom wall portion 25 of the on-off valve assembly 13 abuts on the partition plate 65, so that a protrusion for reducing the contact area is formed on the surface of the partition plate 65. 77 is formed in four places.

[Engagement of liquid fuel cartridge]
9A, 9B, 12A, and 12B are views showing a state in which the liquid fuel cartridge is engaged with the attachment. 9 to 12, (A) of each drawing is a cross-sectional view of the liquid fuel cartridge 3 and the attachment 5, and (B) is a corresponding outer wall portion 33 of the valve seat body 17 of (A). FIG. 6 is a schematic view showing a process of engagement between a groove 35 and a protrusion 37 formed on the inner wall of the attachment 5 and an engaging protrusion 73 provided on the inner wall of the attachment 5.

  In order to engage the liquid fuel cartridge 3 with the attachment 5, first, the liquid fuel cartridge 3 is inserted with the opening / closing valve assembly 13 side facing the concave portion 67 of the attachment 5 (the state of FIGS. 9A and 9B). ). In this state, as shown in FIG. 9B, the engaging convex portion 73 is outside the groove portion 35. In this state, the liquid fuel cartridge 3 is rotated about the virtual center line IL passing through the shaft portion 45 of the valve body 19 while applying a pressing force to lightly push the liquid fuel cartridge 3 in the insertion direction ID (the rotation direction is No matter). Then, since the front end portion 36A and the front end portion 37A and the front end portion 73A of the engaging convex portion 73 have a small contact area, the engaging convex portion 73 is guided along the groove inner peripheral surface 35a or the protruding portion outer peripheral surface 37a. Then, it enters the groove 35 (the state shown in FIGS. 10A and 10B). When the liquid fuel cartridge 3 is further pushed into the insertion direction ID from this state, the engaging convex portion 73 is guided by the groove inner peripheral surface 35a and reaches the first facing portion 35A (FIGS. 11A and 11B). ) State). In the state of FIGS. 11A and 11B, the push-up pin 69 pushes up the valve element 19 to accumulate the opening / closing accumulating component 21, and the valve seat body 17 pushes down the partition plate 65 for pushing up. The energy storage component 63 is stored. That is, the opening / closing energy storage component 21 and the push-up energy storage component 63 cooperate to function as energy storage means. Here, when the force for pushing the liquid fuel cartridge 3 in the insertion direction ID is released, the opening / closing accumulator component 21 and the push-up accumulator component 63 are released, and the liquid fuel cartridge 3 moves in the pulling direction. Before the urging component 21 and the push-up accumulating component 63 are all released, the engaging convex portion 73 comes into contact with the second facing portion 37B of the protruding portion 37, and the liquid fuel cartridge 3 is engaged with the attachment 5 (FIG. 12 (A) (B) state). In this state, the push-up pin 69 keeps pushing up the valve body 19, and the liquid fuel filled in the cartridge body 11 has the fuel discharge port 11 </ b> A, the fuel passage portion 53 of the restraining member 23, and the valve seat body 17. Through the through holes 29 in this order and flow out to the attachment 5 and further reach the liquid fuel tank 7 through the fuel discharge hole 71 of the attachment 5.

  When removing the liquid fuel cartridge 3, by rotating the liquid fuel cartridge 3 while applying a pushing force to the liquid fuel cartridge 3, the engaging convex portion 73 is guided and slid by the groove inner peripheral surface 35a to engage. Is released (in order of the states of FIGS. 12A and 12B, the states of FIGS. 11A and 11B, the states of FIGS. 10A and 10B, and the states of FIGS. 9A and 9B). ).

[Shape dimensions of liquid fuel cartridge]
As shown in FIG. 1, the liquid fuel combustor 1 includes a frame body 81 and a lid body 83 in addition to the above. The frame 81 includes a cartridge storage chamber 85 in which the liquid fuel cartridge 3 is stored, and a burner assembly storage chamber 87 in which the burner assembly 9 is stored. The cartridge storage chamber 85 and the burner assembly storage chamber 87 are provided. Between them, a heat shield plate 89 is provided. The frame 81 and the heat shield plate 89 are formed from a metal plate. The lid 83 closes the upper opening of the cartridge storage chamber 85, and faces the bottom 11 </ b> B when the liquid fuel cartridge 3 is stored in the cartridge storage chamber 85.

  The heat from the burner assembly 9 diffuses from the burner assembly 9 to the surroundings, but the temperature of the top plate of the frame 81 and the portion of the heat shield plate 89 near the top plate is considerably high due to the heat diffused upward. Therefore, the heat heats the main body base 11C of the cartridge main body 11. Therefore, in the present embodiment, by devising the size and shape of the cartridge main body 11, the temperature of the main body base 11C of the cartridge main body 11 becomes lower than the thermal deformation start temperature while increasing the capacity of the cartridge main body 11. Yes. That is, as shown in FIGS. 1 and 2, the outer dimension of the main body base 11C is set smaller than the outer dimension of the center part 11D, and a gap S1 is provided between the heat shield plate 89 and the main body base 11C. Yes. Further, a heat shield space S <b> 2 is formed between the lid 83 and the bottom 11 </ b> B of the cartridge body 11.

  Specifically, this will be described with reference to FIGS. 1 and 13. 13 is an end view taken along the line XIII-XIII shown in FIG. 1 and shows only the necessary portions of the cartridge main body 11, the frame body 81, and the heat shield plate 89. FIG. The outer dimension of the central part 11D of the cartridge body 11 is 86 mm, the outer dimension of the base part 11C is 80 mm, the thickness dimension of the gap S1 is 6.64 mm, and the thickness dimension of the heat shield space S2 is 50.7 mm. is there. This prevents the temperature of the main body base portion 11C and the bottom portion 11B from exceeding 50 ° C. at a room temperature of 20 ° C. even when the burner assembly with a combustion amount of 2200 W is burned.

  Although the embodiments of the present invention have been specifically described above, the present invention is not limited to these embodiments, and can of course be modified within the scope of the technical idea of the present invention. It is. For example, in the above-described embodiment, the push-up energy storage component 63 is provided in the concave portion of the attachment 5, and the opening-and-closing energy storage component 21 and the push-up energy storage component 63 cooperate to function as energy storage means. However, the pushing-up energy storage component 63 in the recess of the attachment 5 may not be provided, and the opening / closing energy storage component 21 alone may function as the energy storage means.

  ADVANTAGE OF THE INVENTION According to this invention, the liquid fuel combustor which can use the liquid fuel cartridge previously filled with the liquid fuel can be provided. In addition, it is possible to provide a liquid fuel combustor that can be easily attached and that the liquid fuel cartridge is unlikely to be detached even when vibration or impact is applied to the liquid fuel combustor. Furthermore, a liquid fuel cartridge connection structure that enables the use of the liquid fuel cartridge in various types of liquid fuel combustors can be provided.

DESCRIPTION OF SYMBOLS 1 Liquid fuel combustor 3 Liquid fuel cartridge 5 Attachment 61 Attachment main-body part 63 Pushing-up accumulation | storage part 65 Partition plate 75 Through-hole 77 Projection part 67 Recessed part 69 Push-up pin 71 Fuel discharge hole 73 Enhancing convex part 73A Tip part 7 Liquid fuel Tank 7A Fuel supply port 9 Burner assembly 11 Cartridge body 11A Fuel discharge port 11B Bottom portion 11C Body base portion 11D Center portion 11E Fingertip fitting recess 13 Opening and closing valve assembly 17 Valve seat body 25 Bottom wall portion 27 Peripheral wall portion 33 Outer wall portion 34 Inner wall portion 28 Flange portion 29 Through-hole 31 Valve seat 35 Groove portion 35A First facing portion 36 Wall portion 36A Tip portion 37 Projecting portion 37A Tip portion 37B Second facing portion 38 Cap engaging portion 38A Inclined portion 38B Flat portion 19 Valve body 39 Valve body Body part 41 Valve member 43 Projection part 4 Valley portion 45 Shaft portion 21 Opening / closing energy storage component 23 Holding member 47 Energy storage component storage portion 49 Valve seat body engagement portion 51 Shaft through hole 53 Fuel passage portion 15 Cap 55 Female thread portion 57 Engaged portion 57A Inclined surface 57B Flat Surface 59 Finger pressing position instructing portion 81 Frame 83 Lid 85 Cartridge storage chamber 87 Burner assembly storage chamber 89 Heat shield plate

Claims (10)

A cartridge body, and an on-off valve assembly attached to a fuel discharge port of the cartridge body, wherein the on-off valve assembly includes a valve seat body having a valve seat and a valve member cooperating with the valve seat. A liquid fuel cartridge comprising: a body; and an opening and closing energy storage component that generates a pressing force that presses the valve member against the valve seat in a released state;
A liquid fuel tank with a fuel supply port;
A recess that is attached to the fuel supply port and fits in the valve seat body; and a push-up pin that is provided in the recess and pushes up the valve body in a state where the valve seat body is fitted in the recess; An attachment provided with a fuel discharge hole that is provided in a recess and allows liquid fuel discharged from the liquid fuel cartridge into the recess;
A liquid fuel combustor comprising a burner assembly for burning the liquid fuel in the liquid fuel tank;
The inner wall portion of the concave portion of the attachment is provided with a plurality of engaging convex portions that are arranged at a predetermined pitch in the circumferential direction of the inner wall portion and project toward the inner side of the concave portion,
The outer wall portion of the valve seat body has a plurality of groove portions that open to the outer side in the orthogonal direction perpendicular to the insertion direction of the valve body and the predetermined direction in the circumferential direction of the valve seat body. Are arranged at a pitch of
The outer wall portion of the valve seat body is provided with a plurality of projecting portions that are respectively positioned in the plurality of groove portions and project in the orthogonal direction,
The shape of the inner peripheral surface of the groove portion of the plurality of groove portions and the outer peripheral surface of the protrusion portion of the plurality of protrusion portions is such that the engaging convex portion is the inner peripheral surface of the groove portion or in the process of inserting the valve seat body into the concave portion. When the valve seat main body is further inserted into the recess while being guided along the outer peripheral surface of the protrusion, and the valve seat body is further inserted into the recess, the engagement protrusion is placed on the inner peripheral surface of the groove facing the insertion direction. It is determined so that it may guide between 1 opposing part and the 2nd opposing part of the above-mentioned projection part outer peripheral surface,
When a push-down force toward the attachment is applied to the liquid fuel cartridge, the pressure is accumulated in the process of pushing up the valve member in a direction away from the valve seat by the push-up pin, and the push-down to the liquid fuel cartridge is performed. When the force is released, the liquid fuel combustor is provided with a storing means for releasing the projection so that the protrusion is pressed against the engaging projection. In the recess of the attachment is provided with a push-up energy storage component that is stored by the valve seat body inserted into the recess,
2. The liquid fuel combustor according to claim 1, wherein the energy storage means includes the opening / closing energy storage component and the push-up energy storage component.   The liquid fuel combustor according to claim 1, wherein the energy storage means is the opening / closing energy storage component of the liquid fuel cartridge. The contour shape of the plurality of groove portions viewed from the outer side in the orthogonal direction of the groove portion inner peripheral surface has a shape in which the dimension in the circumferential direction becomes smaller toward the first opposing portion of the groove portion inner peripheral surface. ,
The outline shape of the protrusion outer peripheral surface of the plurality of protrusions has a shape in which the dimension in the circumferential direction increases toward the second opposing portion of the outer peripheral surface of the protrusion. Liquid fuel combustor.   The shape of the tip portion in the insertion direction of the wall portion located between two adjacent groove portions of the plurality of groove portions, the shape of the tip portion in the insertion direction of the protrusion and the shape of the convex portion for engagement are Each of the engaging projections has a shape that slides into the groove when the engaging projection comes into contact with the tip of the wall portion in the insertion direction or the tip of the protrusion in the insertion direction. The liquid fuel combustor according to claim 4. The shape of the tip portion of the wall portion in the insertion direction and the tip portion of the protrusion in the insertion direction has a shape in which the circumferential dimension gradually decreases toward the insertion direction,
The shape of the front-end | tip part which goes to the extraction direction opposite to the said insertion direction of the said convex part for engagement has a shape where the dimension of the said circumferential direction becomes small gradually toward the said extraction direction. Liquid fuel combustor.   The end surface in the drawing direction of the protruding portion is a curved surface that is larger than the end surface in the insertion direction of the engaging convex portion and is curved so as to protrude toward the insertion direction. Liquid fuel combustor.   2. The liquid fuel combustor according to claim 1, wherein the predetermined pitch is 360 ° / N, and the N is an integer of 2 or more and 6 or less.   The liquid fuel combustor according to claim 8, wherein N is four. A cartridge body, and an on-off valve assembly attached to a fuel discharge port of the cartridge body, wherein the on-off valve assembly includes a valve seat body having a valve seat and a valve member cooperating with the valve seat. A liquid fuel cartridge comprising a fuel supply port of a liquid fuel combustor, and a liquid fuel cartridge comprising a body and an opening / closing energy storage component that generates a pressing force that presses the valve member against the valve seat in a released state A liquid fuel cartridge coupling structure detachably coupled to
A recess that is attached to the fuel supply port and fits in the valve seat body; and a push-up pin that is provided in the recess and pushes up the valve body in a state where the valve seat body is fitted in the recess; Provided with an attachment provided with a fuel discharge hole that is provided in a recess and allows liquid fuel discharged from the fuel cartridge into the recess,
The inner wall portion of the concave portion of the attachment is provided with a plurality of engaging convex portions that are arranged at a predetermined pitch in the circumferential direction of the inner wall portion and project toward the inner side of the concave portion,
In the outer wall portion of the valve seat body, there are a plurality of groove portions that open to the outside in the orthogonal direction orthogonal to the insertion direction and orthogonal to the insertion direction in the insertion direction of the valve body into the recess. Are arranged at the predetermined pitch in the circumferential direction of
The outer wall portion of the valve seat body is provided with a plurality of projecting portions that are respectively positioned in the plurality of groove portions and project in the orthogonal direction,
The shape of the inner peripheral surface of the groove portion of the plurality of groove portions and the outer peripheral surface of the protrusion portion of the plurality of protrusion portions is such that the engaging convex portion is the inner peripheral surface of the groove portion or in the process of inserting the valve seat body into the concave portion. When the valve seat main body is further inserted into the recess while being guided along the outer peripheral surface of the protrusion, and the valve seat body is further inserted into the recess, the engagement protrusion is placed on the inner peripheral surface of the groove facing the insertion direction. It is determined so that it may guide between 1 opposing part and the 2nd opposing part of the above-mentioned projection part outer peripheral surface,
When a push-down force toward the attachment is applied to the liquid fuel cartridge, the pressure is accumulated in the process of pushing up the valve member in a direction away from the valve seat by the push-up pin, and the push-down to the liquid fuel cartridge is performed. A liquid fuel cartridge coupling structure comprising: an energy storage means for releasing the force so that the protrusion is pressed against the engaging protrusion when the force is released.