CN108375068B - Liquid fuel burner and liquid fuel cartridge connecting structure - Google Patents
Liquid fuel burner and liquid fuel cartridge connecting structure Download PDFInfo
- Publication number
- CN108375068B CN108375068B CN201810100214.4A CN201810100214A CN108375068B CN 108375068 B CN108375068 B CN 108375068B CN 201810100214 A CN201810100214 A CN 201810100214A CN 108375068 B CN108375068 B CN 108375068B
- Authority
- CN
- China
- Prior art keywords
- liquid fuel
- valve seat
- recess
- valve
- cartridge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K5/00—Feeding or distributing other fuel to combustion apparatus
- F23K5/02—Liquid fuel
- F23K5/14—Details thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
- F23D11/36—Details, e.g. burner cooling means, noise reduction means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C5/00—Stoves or ranges for liquid fuels
- F24C5/18—Liquid-fuel supply arrangements forming parts of stoves or ranges
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Feeding And Controlling Fuel (AREA)
Abstract
The invention provides a liquid fuel burner and a liquid fuel cartridge connecting structure, which can use a liquid fuel cartridge filled with liquid fuel in advance. The liquid fuel burner includes a liquid fuel storage tank, an attachment, a liquid fuel tank, and a burner assembly. A plurality of convex parts for clamping are arranged on the inner wall part of the concave part of the accessory. The outer wall of the valve seat body is provided with a plurality of grooves, and the protrusions are disposed in the grooves. The groove inner peripheral surface and the protrusion outer peripheral surface are shaped to guide the engaging protrusion between the first opposing portion and the second opposing portion of the protrusion outer peripheral surface. When the valve seat body is inserted into the recess and a pressing force is applied, the engaging protrusion reaches between the first opposing portion and the second opposing portion, and when the pressing force is released in this state, the liquid fuel cartridge is fixed by pressing the protrusion against the engaging protrusion by the opening/closing energy storage member.
Description
Technical Field
The present invention relates to a liquid fuel burner and a liquid fuel cartridge connecting structure for burning liquid fuel in a liquid fuel tank by a burner.
Background
In a conventional liquid fuel burner, a purchased liquid fuel is transferred to a metallic canister, and the liquid fuel supplied from the canister to a liquid fuel tank is burned in a burner.
In order to save labor for transferring the liquid fuel to the canister, it has been studied to use a liquid fuel cartridge in which a disposable container is filled with a liquid in advance, instead of a metallic canister.
Various types of liquid fuel burners are now commercially available. If a liquid fuel cartridge cannot be used in a commercially available liquid fuel burner, the liquid fuel cartridge cannot be expected to spread.
Disclosure of Invention
Problems to be solved by the invention
It is an object of the present invention to provide a liquid fuel burner that is capable of using a liquid fuel cartridge that is pre-filled with liquid fuel.
Another object of the present invention is to provide a liquid fuel burner which can be easily mounted and is not easily detached even if vibration is applied to the liquid fuel burner to impact a liquid fuel cartridge.
It is still another object of the present invention to provide a liquid fuel cartridge coupling structure that enables the use of a liquid fuel cartridge in various kinds of liquid fuel burners.
Means for solving the problems
The liquid fuel burner of the present invention includes a liquid fuel cartridge, a liquid fuel tank, an accessory, and a burner assembly.
The liquid fuel cartridge includes a cartridge body, and an on-off valve unit attached to a fuel discharge port of the cartridge body, and the on-off valve unit includes a valve seat body having a valve seat, a valve element having a valve member that operates in cooperation with the valve seat, and an energy storage member for opening and closing that generates a pressing force for pressing the valve member against the valve seat in a discharge state.
The liquid fuel tank is provided with a fuel supply port.
The attachment is attached to the fuel supply port, and includes a recess into which the valve seat main body is fitted, a lift pin provided in the recess and lifting up the valve body in a state where the valve seat main body is fitted in the recess, and a fuel discharge hole provided in the recess and allowing the liquid fuel discharged from the liquid fuel cartridge into the recess to pass therethrough.
The burner assembly combusts liquid fuel within a liquid fuel tank.
The valve seat body has a plurality of grooves arranged at a predetermined pitch in the circumferential direction of the valve seat body, the plurality of grooves opening in an insertion direction in which the valve element is inserted into the recess and in an outer side in a direction orthogonal to the insertion direction, and a plurality of protruding portions arranged in the plurality of grooves and protruding in the orthogonal direction are arranged in the outer wall portion of the valve seat body. The shapes of the inner peripheral surfaces of the grooves and the outer peripheral surfaces of the protrusions are set as follows: the liquid fuel burner includes an energy accumulating mechanism that accumulates energy during the process of lifting up the valve member in a direction away from the valve seat by the lift pin when a pressing force is applied to the liquid fuel cartridge toward the accessory, and releases the energy to press the protruding portion against the engaging protruding portion when the pressing force to the liquid fuel cartridge is released.
With this configuration, the liquid fuel cartridge can be mounted to a liquid fuel burner to which accessories can be attached. Further, the liquid fuel cartridge can be easily attached to the accessory, and the liquid fuel cartridge is not easily detached even when vibration or impact is applied to the liquid fuel burner.
The concave portion of the attachment may be provided with a jack-up energy storage member that stores energy by the valve seat main body inserted into the concave portion, and the energy storage mechanism may be configured by an opening/closing energy storage member and a jack-up energy storage member.
The energy storage mechanism may be an energy storage member for opening and closing the liquid fuel cartridge.
The contour shape of the inner peripheral surface of the groove portion of the plurality of groove portions as viewed from the outside in the orthogonal direction may have a shape in which the circumferential dimension becomes smaller toward the first facing portion of the inner peripheral surface of the groove portion, and the contour shape of the outer peripheral surface of the protrusion portion of the plurality of protrusion portions may have a shape in which the circumferential dimension becomes larger toward the second facing portion of the outer peripheral surface of the protrusion portion.
The shape of the distal end 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 distal end portion in the insertion direction of the protruding portion, and the shape of the engaging convex portion may each have the following shape: when the engaging projection abuts against the front end portion of the wall portion in the insertion direction or the front end portion of the protruding portion in the insertion direction, the engaging projection slides into the groove portion.
The distal end portion of the wall portion in the insertion direction and the distal end portion of the protruding portion in the insertion direction may have shapes in which the circumferential dimension gradually decreases in the insertion direction, and the distal end portion of the engaging protruding portion in the withdrawal direction opposite to the insertion direction may have shapes in which the circumferential dimension gradually decreases in the withdrawal direction.
The end surface of the protruding portion in the pull-out direction may be formed of a curved surface that is larger than the end surface of the engaging protrusion in the insertion direction and that is curved so as to protrude in the insertion direction.
The predetermined pitch may be 360 °/N, and N may be an integer of 2 or more and 6 or less. N is for example 4.
The present invention can also be grasped as a liquid fuel cartridge connecting structure. By using the liquid fuel cartridge connecting structure of the present invention, the liquid fuel cartridge can be used for a conventional liquid fuel burner. The liquid fuel cartridge connecting structure of the present invention is a liquid fuel cartridge connecting structure for detachably connecting a liquid fuel cartridge to a liquid fuel tank having a fuel supply port of a liquid fuel burner, the liquid fuel cartridge including a cartridge main body and an on-off valve assembly attached to a fuel discharge port of the cartridge main body, the on-off valve assembly including a valve seat main body having a valve seat, a valve element having a valve member cooperating with the valve seat, and an energy storage member for opening and closing which generates a pressing force for pressing the valve member against the valve seat in a discharge state, characterized in that the liquid fuel cartridge connecting structure includes an attachment attached to the fuel supply port and including a recess into which the valve seat main body is fitted, a lift pin provided in the recess and lifting up the valve element in a state in which the valve seat main body is fitted into the recess, and a fuel discharge hole provided in the recess and through which a liquid fuel discharged from the liquid fuel cartridge into the recess passes, the valve seat includes a recess, a plurality of engaging protrusions provided on an inner wall portion of the recess, the plurality of engaging protrusions being arranged at a predetermined pitch in a circumferential direction of the inner wall portion and protruding inward of the recess, a plurality of grooves arranged at a predetermined pitch in a circumferential direction of the valve seat body, the plurality of grooves opening outward in an insertion direction in which the valve element is inserted into the recess and in an orthogonal direction orthogonal to the insertion direction, a plurality of protruding portions arranged in the plurality of grooves and protruding in the orthogonal direction, respectively, on the outer wall portion of the valve seat body, and shapes of inner circumferential surfaces of the grooves and outer circumferential surfaces of the protruding portions of the plurality of grooves are set such that: the liquid fuel cartridge connecting structure includes an energy accumulating mechanism that accumulates energy during the process of lifting up the valve member in a direction away from the valve seat by the lift pin when a pressing force toward the accessory is applied to the liquid fuel cartridge, and releases the energy so as to press the protruding portion against the engaging protruding portion when the pressing force to the liquid fuel cartridge is released.
Drawings
Fig. 1 is a diagram showing a part (front face) of a liquid fuel burner of the present embodiment in a cut-away state.
Fig. 2 is a view of a liquid fuel cartridge in a state of sale with a cap attached, (a) is a plan view, (B) is a front view, (C) is a sectional view taken along line C-C, and (D) is a sectional view taken along line D-D.
Fig. 3 is a perspective view of the opening and closing valve assembly.
Fig. 4 is an exploded perspective view of the opening and closing valve assembly.
Fig. 5 (a) is a plan view of the opening/closing valve assembly, (B) is a sectional view taken along line B-B, and (C) is a sectional view taken along line C-C.
Fig. 6 is a perspective view of a cover attached to the opening and closing valve assembly.
Figure 7 is a perspective view of an accessory.
Figure 8 is an exploded perspective view of the attachment.
Fig. 9 (a) and (B) are views showing a state in which the liquid fuel cartridge is engaged with the accessory.
Fig. 10 (a) and (B) are views showing a state in which the liquid fuel cartridge is engaged with the accessory.
Fig. 11 (a) and (B) are views showing a state in which the liquid fuel cartridge is engaged with the accessory.
Fig. 12 (a) and (B) are views showing a state in which the liquid fuel cartridge is engaged with the accessory.
FIG. 13 is a cross-sectional view taken along line XIII-XIII shown in FIG. 1.
Description of reference numerals:
1a liquid fuel burner; 3 liquid fuel cartridge; 5, accessories; 61 an accessory body portion; 63 an energy storage member for jacking; 65 a partition plate; 75 through holes; 77 a protrusion; 67 a recess; 69 jacking the pin; 71 a fuel discharge hole; 73 engaging projections; 73A front end portion; 7a liquid fuel tank; a 7A fuel supply port; 9 a burner assembly; 11a cartridge body; 11A fuel discharge port; 11B bottom; 11C a body base; 11D center portion; 11E fingertip fit recesses; 13 an on-off valve assembly; 17 a valve seat body; 25 bottom wall portions; 27 peripheral wall parts; 33 an outer wall portion; 34 an inner wall portion; 28 a flange portion; 29 through holes; 31 a valve seat; 35a groove part; 35A first opposing portion; 36 wall portions; 36A front end portion; 37a projection; 37A front end portion; 37B second opposing portion; 38a cover engaging portion; 38A inclined portion; 38B flat portion; 19 a valve core; 39 a valve body portion; 41 a valve member; 43 a projection; 44 valley portions; 45 shaft portions; 21 an energy storage member for opening and closing; 23 a restraining member; 47 an energy storage member housing section; 49 a valve seat body engaging portion; a 51-axis through hole; 53 fuel passing portion; 15, covering; 55 an internal threaded portion; 57 is a clamped part; 57A inclined plane; 57B flat face; 59 finger pressing position indication part; 81 frame body; 83 a cover body; 85 a cartridge receiving chamber; 87 a burner assembly receiving chamber; 89 heat insulation board.
Detailed Description
Hereinafter, embodiments of the liquid fuel burner of the present invention will be described in detail with reference to the accompanying drawings.
[ integral Structure ]
Fig. 1 is a diagram showing a part (front face) of a liquid fuel burner of the present embodiment in a cut-away state. As shown in fig. 1, the liquid fuel burner 1 includes a liquid fuel cartridge 3, an attachment 5, a liquid fuel tank 7 having a fuel supply port 7A, and a burner assembly 9.
The burner unit 9 burns liquid fuel (typically kerosene) in the liquid fuel tank 7. In the present embodiment, the burner unit 9 includes a core vertical burner having a combustion amount of 2200W.
In the present embodiment, the structure other than the liquid fuel cartridge 3 and the attachment 5 is the same as that of a commercially available liquid fuel burner. The attachment 5 enables the liquid fuel cartridge 3 to be attached to various types of commercially available liquid fuel burners. In the present embodiment, the lower direction of the vertical direction of the paper surface of fig. 1 is defined as the insertion direction ID of the liquid fuel cartridge 3. In other figures, the direction ID is shown as being inserted to define the direction.
[ liquid Fuel Cartridge ]
The liquid fuel cartridge 3 will be described with reference to fig. 2 to 5.
Fig. 2 (a) is a plan view of the liquid fuel cartridge with the cap 15 attached thereto, fig. 2 (B) is a front view of the liquid fuel cartridge, fig. 2 (C) is a sectional view taken along line C-C of fig. 2 (B), and fig. 2 (D) is a sectional view taken along line D-D of fig. 2 (a). The liquid fuel cartridge 3 is filled with liquid fuel (e.g., kerosene). The liquid fuel cartridge 3 in a fuel-filled state is displayed in a store front and sold to consumers. The liquid fuel cartridge 3 includes a cartridge main body 11 made of resin, and an on-off valve unit 13 attached to a fuel discharge port 11A of the cartridge main body 11. The cover 15 is attached to the opening and closing valve assembly 13. The cartridge body 11 has a bottom 11B, a body base 11C continuous with the bottom 11B, and a central portion 11D continuous with the body base 11C. One fingertip engaging recess 11E into which a plurality of fingertips of the replacement operator are engaged is formed in the main body base 11C so as to be continuous in the circumferential direction and open to the outside. A hook portion into which one or more fingers of a replacement operator enter is integrally formed on the outer surface of the bottom portion 11B.
Fig. 3 to 5 (a) to (C) are views showing the opening/closing valve assembly 13 in a state of being removed from the cartridge main body 11. Fig. 3 is a perspective view of the opening and closing valve assembly, fig. 4 is an exploded perspective view of the opening and closing valve assembly, fig. 5 (a) is a plan view of the opening and closing valve assembly, fig. 5 (B) is a sectional view taken along line B-B of fig. 5 (a), and fig. 5 (C) is a sectional view taken along line C-C of fig. 5 (a). The opening/closing valve unit 13 includes a resin valve seat body 17, a resin valve element 19, an opening/closing energy storage member 21 formed of a metal coil spring, and a resin restraining member 23. The opening/closing energy storage member 21 is not limited to being made of metal, and may be made of resin.
The valve seat main body 17 includes a bottom wall portion 25 having a through hole 29 formed in the center thereof through which the liquid fuel passes, and a peripheral wall portion 27 rising from an outer edge portion of the bottom wall portion 25, and an annular flange portion 28 is integrally formed at an end portion of the peripheral wall portion 27 on the side opposite to the bottom wall portion 25. An annular valve seat 31 is formed around the through hole 29 formed in the bottom wall portion 25.
The outer wall portion 33 of the peripheral wall portion 27 of the valve seat main body 17 is formed with four groove portions 35 and four protruding portions 37 respectively disposed in the four groove portions 35. The groove 35 opens outward in the insertion direction ID and in the orthogonal direction orthogonal to the insertion direction ID. When the groove portion 35 is viewed from the outside in the orthogonal direction, the outline of the inner circumferential surface 35a of the groove portion 35 is triangular in shape having a bottom side on the bottom wall portion 25 side and a circumferential dimension that decreases toward the top. In the present embodiment, the top portion constitutes the first opposing portion 35A of the groove portion inner peripheral surface 35A.
The contour shape of the projection outer peripheral surface 37a of the projection 37 has the following shape: the groove portion 35 has a peak portion (tip portion) 37A in an opening portion that opens in the insertion direction ID, and the circumferential dimension increases in the direction opposite to the insertion direction ID, and decreases in the direction further 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 a second opposed portion 37B of the protruding portion outer peripheral surface 37 a. The end surface of the projecting portion 37 constituting the second opposing portion 37B is shaped in a slightly curved shape so as to project toward the insertion direction ID. The first opposed portion 35A and the second opposed portion 37B are in a positional relationship opposed to each other in the insertion direction. Specifically, the shapes of the groove inner peripheral surfaces 35a of the plurality of grooves 35 and the protrusion outer peripheral surfaces 37a of the plurality of protrusions 37 are defined as follows: in the process of inserting the valve seat main body 17 into the recess 67 of the attachment 5, which will be described in detail later, the engaging convex portion 73 of the attachment 5 enters the groove 35 while being guided along the groove inner circumferential surface 35A or the protrusion outer circumferential surface 37a of the groove 35, and when the valve seat main body 17 is further inserted into the recess 67, the engaging convex portion 73 is guided between the first opposing portion 35A of the groove inner circumferential surface 35A and the second opposing portion 37B of the protrusion outer circumferential surface 37a, which oppose each other in the insertion direction.
As shown in fig. 5 (a), the four groove portions 35 and the four protrusion portions 37 are arranged at predetermined pitches in the circumferential direction. In the present embodiment, the pitch P, which is the angular interval between the top (35A) of the groove portion 35 and the top (35A) of the adjacent groove portion 35, and the pitch P, which is the angular interval between the top of the protrusion 37 and the top of the adjacent protrusion 37, are 90 ° in 360 °/4.
The shape of the leading end portion 36A of the wall portion 36 located between the adjacent two groove portions 35 in the insertion direction ID and the shape of the leading end portion 37A of the protrusion 37 in the insertion direction ID have shapes in which the circumferential dimension gradually decreases toward the insertion direction ID. The angular interval, i.e., the pitch, of the distal end portions 37A of the projections 37 adjacent to the distal end portion 36A of the wall portion 36 is 360 °/8 — 45 °. Partial male screw portions 36B, 37C into which the cap 15 is screwed are formed on the surfaces of the wall portion 36 between the adjacent two groove portions 35 and the four projecting portions 37.
As shown in fig. 3 and 5 (a), two cover engaging portions 38 that engage with the cover 15 are formed near the flange portion 28 of the outer wall portion 33 of the valve seat main body 17. The two cover engaging portions 38 are formed at positions separated by 180 ° in the circumferential direction from each other. The lid engagement portion 38 has an inclined portion 38A gradually distant from the outer wall portion 33 in the orthogonal direction as going forward in the circumferential direction, and a flat portion 38B continuous with the inclined portion 38A.
The valve seat main body 17 is formed by injection molding, and as shown in fig. 3, a parting line PL of a mold at the time of injection molding passes through a front end portion 36A of the wall portion 36. Further, a plurality of deduction portions 33A for preventing sink marks are formed in the outer wall portion 33.
As shown in fig. 4, 5 (B) and (C), a suppression member engaged portion 34A to which the suppression member 23 is fixed and a cartridge body engaged portion 34B to which the fuel discharge port of the cartridge body 11 is engaged are formed on the inner side (inner wall portion 34) of the peripheral wall portion 27 of the valve seat body 17.
The valve body 19 includes a valve body 39, a valve member 41 disposed at a position facing the valve seat 31 and operating in cooperation with the valve seat 31, a plurality of (8 in this example) protruding portions 43 formed on an outer wall portion of the valve body 39, and a shaft portion 45 extending from a center portion of the valve body 39 in the insertion direction ID. The liquid fuel passes through valley portions 44 formed between the adjacent two projections 43 and the projections 43.
In the state where the shaft portion 45 is inserted into the opening/closing energy storage member 21, one end 21A thereof abuts against the valve body portion 39 of the valve element 19, and the other end 21B thereof abuts against the restraining member 23. The opening/closing energy storage member 21 generates a pressing force for pressing the valve member 41 against the valve seat 31 in the released state.
As shown in fig. 4, the suppressing member 23 includes: an energy storage member housing portion 47 that houses the energy storage member 21 for opening and closing, an annular valve seat main body engagement portion 49 formed around the energy storage member housing portion 47, a shaft through hole 51 formed in a top portion of the energy storage member housing portion 47 and through which the shaft portion 45 passes, and a fuel passage portion 53 formed around the energy storage member housing portion 47 and through which liquid fuel passes. The valve seat main body engagement portion 49 engages with the restraining member engaged portion 34A [ fig. 5 (C) ] formed on the inner wall portion 34 of the valve seat main body 17, and is fixed to the valve seat main body 17. The other end 21B of the opening/closing energy storage member 21 abuts on the periphery of the shaft through hole 51.
[ cover ]
Fig. 6 is a perspective view of the cover 15 attached to the opening/closing valve assembly 13 shown in fig. 3 and 4 and fig. 5 (a) to 5 (C) as viewed from below. An inner peripheral surface of the cap 15 is formed with a female screw portion 55 that is screwed with the partial male screw portions 36B and 37C shown in fig. 3, and two engaged portions 57 that are engaged with the cap engaging portion 38 shown in fig. 5 (a). The two engaged portions 57 are formed at positions separated by 180 ° in the circumferential direction from each other. The engaged portion 57 includes an inclined surface 57A gradually separated from the inner peripheral surface toward the radially inner side of the cap 15 as it advances in a direction opposite to the rotation direction at the time of assembling the cap 15, and a flat surface 57B extending in the radial direction from the end position of the inclined surface 57A toward the inner peripheral surface.
Two finger-pressing position indicating portions 59 are formed on the outer peripheral surface of the cover 15. The finger-pressing position indicating portions 59 are formed at positions circumferentially shifted by 90 ° from the positions where the two engaged portions 57 are formed, and the two finger-pressing position indicating portions 59 are formed at positions circumferentially separated by 180 ° from each other.
The lid 15 is fitted to the opening/closing valve unit 13, and the lid 15 is rotated with the partial male screw portions 36B and 37C screwed into the female screw portion 55 until the lid engaging portion 38 comes into contact with the engaged portion 57. When the lid 15 is further rotated with respect to the open/close valve assembly 13 from this position, the engaged portion 57 slides on the inclined portion 38A of the lid engaging portion 38 and then slides on the flat portion 38B, so that the engaged portion 57 goes over the lid engaging portion 38. Thus, even if the cap 15 is rotated in the opposite direction, the engaged portion 57 engages with the cap engaging portion 38, so-called child locks (see fig. 2 (C) and (D)) for preventing a child or the like from opening the liquid fuel cartridge 3 by mistake can be formed. When the liquid fuel cartridge 3 is unsealed, if the position indicator 59 is pressed with two fingers while the shape of the lid 15 is deformed to increase the distance separating the engaged portions 57 from each other, and the lid 15 is rotated in the direction opposite to the coupling direction with respect to the opening/closing valve assembly 13, the engaged portions 57 can get over the lid engaging portions 38, and the child lock can be released.
[ Accessories ]
Fig. 7 is a perspective view of the attachment, and fig. 8 is an exploded perspective view of the attachment. The accessory 5 is attached to a fuel supply port 7A of a liquid fuel tank 7. The attachment 5 includes an attachment main body 61, a jack-up energy storage member 63, and a partition plate 65. The attachment main body portion 61 includes: a recess 67 into which the valve seat main body 17 is fitted, a lift pin 69 provided in the recess 67 and lifting up the valve body 19 in a state in which the valve seat main body 17 is fitted into the recess 67, and four fuel discharge holes 71 provided in the recess 67 and through which the liquid fuel discharged from the liquid fuel cartridge 3 into the recess 67 passes.
A plurality of engaging protrusions 73 are provided on the inner wall portion of the recess 67, and the plurality of engaging protrusions 73 are arranged at a predetermined pitch in the circumferential direction of the inner wall portion and protrude inward of the recess. In the present embodiment, four engaging protrusions 73 are provided, and the angular interval between the engaging protrusion 73 and the adjacent engaging protrusion 73, that is, the pitch is 90 ° at 360 °/4. The shape of the distal end portion 73A of the engaging convex portion 73 facing in the pull-out direction opposite to the insertion direction ID has a shape in which the circumferential dimension gradually decreases in the pull-out direction.
The jack-up energy storage member 63 is provided around the jack-up pin 69. The partition plate 65 is an annular member having a through hole 75 at the center thereof, and is supported by the jack-up energy storage member 63. In the state where the jack-up energy storage member 63 is released, the partition plate 65 is sandwiched between the jack-up energy storage member 63 and the four engaging convex portions 73 and is not located above the positions of the four engaging convex portions 73. When the liquid fuel cartridge 3 is engaged with the accessory 5, the valve seat main body bottom wall portion 25 of the opening and closing valve assembly 13 abuts against the partition plate 65, and therefore, four protrusions 77 for reducing the contact area are formed on the surface of the partition plate 65.
[ engagement of liquid Fuel Cartridge ]
Fig. 9 (a) and (B) to fig. 12 (a) and (B) are views showing a state in which the liquid fuel cartridge is engaged with the accessory. In fig. 9 to 12, fig. a is a cross-sectional view of the liquid fuel cartridge 3 and the accessory 5, and fig. B is a schematic view showing a process of engaging the groove portion 35 and the protrusion 37 formed in the outer wall portion 33 of the valve seat main body 17 of the corresponding fig. a with the engaging protrusion 73 provided in the inner wall portion of the accessory 5.
To engage the liquid fuel cartridge 3 with the accessory 5, the on-off valve assembly 13 side of the liquid fuel cartridge 3 is first inserted into the recess 67 of the accessory 5 (the state of fig. 9 (a) and (B)). In this state, as shown in fig. 9 (B), the engaging convex portion 73 is positioned outside the groove portion 35. In this state, the liquid fuel cartridge 3 is rotated about the imaginary center line IL passing through the shaft portion 45 of the valve body 19 while applying a pressing force for lightly pressing the liquid fuel cartridge 3 in the insertion direction ID (the rotation direction is not limited). Then, since the contact area between the distal end portions 36A and 37A and the distal end portion 73A of the engaging convex portion 73 is small, the engaging convex portion 73 is guided along the groove portion inner peripheral surface 35a or the protruding portion outer peripheral surface 37A and enters the groove portion 35 (the state of fig. 10 (a) and (B)). When the liquid fuel cartridge 3 is further pushed in the insertion direction ID from this state, the engagement convex portion 73 is guided by the groove portion inner peripheral surface 35A and reaches the first opposing portion 35A (the state of fig. 11 (a), (B)). In the state shown in fig. 11 (a) and (B), the jack pin 69 jacks up the valve body 19 to charge the opening/closing energy storage member 21, and the valve seat body 17 pushes down the partition plate 65 to charge the jack-up energy storage member 63. That is, the opening/closing energy storage member 21 and the jack-up energy storage member 63 operate in cooperation with each other and function as an energy storage means. Here, when the force pushing the liquid fuel cartridge 3 in the insertion direction ID is released, the opening/closing energy storage member 21 and the jack-up energy storage member 63 are released and the liquid fuel cartridge 3 moves in the pull-out direction, but before all of the opening/closing energy storage member 21 and the jack-up energy storage member 63 are released, the engaging convex portion 73 abuts against the second opposed portion 37B of the protruding portion 37 and the liquid fuel cartridge 3 is engaged with the accessory 5 (the state of fig. 12 (a), (B)). In this state, the jack pin 69 holds the state of jacking the valve element 19, and the liquid fuel filled in the cartridge main body 11 can flow out of the attachment 5 through the fuel discharge port 11A, the fuel passage portion 53 of the suppression member 23, and the through hole 29 of the valve seat main body 17 in this order, and can reach the liquid fuel tank 7 through the fuel discharge hole 71 of the attachment 5.
When the liquid fuel cartridge 3 is removed, the liquid fuel cartridge 3 is rotated while a pressing force is applied to the liquid fuel cartridge 3, and the engagement convex portion 73 is guided by the groove inner peripheral surface 35a and slides, and the engagement is released (the state of (a) and (B) in fig. 12, the state of (a) and (B) in fig. 11, the state of (a) and (B) in fig. 10, and the state of (a) and (B) in fig. 9 in this order).
[ shape and size of liquid Fuel Cartridge ]
As shown in fig. 1, the liquid fuel burner 1 includes a frame 81 and a cover 83 in addition to the above. The housing 81 includes a cartridge accommodating chamber 85 for accommodating the liquid fuel cartridge 3 and a burner assembly accommodating chamber 87 for accommodating the burner assembly 9, and a heat insulating plate 89 is provided between the cartridge accommodating chamber 85 and the burner assembly accommodating chamber 87. The frame 81 and the heat insulating plate 89 are formed of metal plates. The lid 83 closes the upper opening of the cartridge storage chamber 85, and faces the bottom 11B in a state where the liquid fuel cartridge 3 is stored in the cartridge storage chamber 85.
The heat from the burner unit 9 is diffused from the burner unit 9 to the surroundings, and the temperature of the top plate of the frame 81 and the portion of the heat insulating plate 89 near the top plate becomes extremely high by the heat diffused in the upward direction, and this heat heats the main body base 11C of the cartridge main body 11. Thus, in the embodiment of the present invention, the dimensional shape of the cartridge body 11 is designed by study so that the temperature of the body base 11C of the cartridge body 11 is lower than the thermal deformation starting temperature while increasing the capacity of the cartridge body 11. That is, as shown in fig. 1 and 2, the outer dimension of the body base 11C is set smaller than the outer dimension of the central portion 11D, and a gap S1 is provided between the heat insulating plate 89 and the body base 11C. In addition, an insulating space S2 is formed between the lid 83 and the bottom 11B of the cartridge body 11.
Specifically, the description will be given with reference to fig. 1 and 13. Fig. 13 is a cross-sectional view taken along line XIII-XIII shown in fig. 1, and shows only necessary portions of the cartridge main body 11, the frame 81, and the heat insulating plate 89. The outer dimension of the central portion 11D of the cartridge body 11 is 86mm, the outer dimension of the base portion 11C is 80mm, the thickness dimension of the gap S1 is 6.64mm, and the thickness dimension of the heat insulating space S2 is 50.7 mm. Accordingly, even when the burner assembly having a combustion amount of 2200W is burned, the temperature of the body base 11C and the bottom 11B does not become 50 ℃ or higher under the condition that the room temperature is 20 ℃.
While the embodiments of the present invention have been specifically described above, the present invention is not limited to the above-described embodiments, and it goes without saying that modifications can be made within the scope of the technical idea of the present invention. For example, in the above embodiment, the energy storage member 63 for jack-up is provided in the concave portion of the attachment 5, and the energy storage member 63 for jack-up functions as the energy storage means by cooperating with the energy storage member 21 for open/close operation, but the energy storage member 63 for jack-up in the concave portion of the attachment 5 may not be provided, and only the energy storage member 21 for open/close operation functions as the energy storage means.
Industrial applicability
According to the present invention, a liquid fuel burner capable of using a liquid fuel cartridge previously filled with a liquid fuel can be provided. In addition, it is possible to provide a liquid fuel burner that can be easily mounted and is not easily detached even if vibration is applied to the liquid fuel burner, impacting a liquid fuel cartridge. Further, a liquid fuel cartridge connecting structure capable of using a liquid fuel cartridge for each kind of liquid fuel burner can be provided.
Claims (10)
1. A liquid fuel burner includes:
a liquid fuel cartridge including a cartridge body and an on-off valve unit attached to a fuel discharge port of the cartridge body, the on-off valve unit including a valve seat body having a valve seat, a valve body having a valve member that cooperates with the valve seat, and an energy storage member for opening and closing that generates a pressing force for pressing the valve member against the valve seat in a discharge state;
a liquid fuel tank provided with a fuel supply port;
an attachment attached to the fuel supply port and including a recess into which the valve seat main body is fitted, a lift pin provided in the recess and lifting up the valve body in a state in which the valve seat main body is fitted in the recess, and a fuel discharge hole provided in the recess and allowing the liquid fuel discharged from the liquid fuel cartridge into the recess to pass therethrough; and
a burner assembly that burns liquid fuel within the liquid fuel tank,
it is characterized in that the preparation method is characterized in that,
a plurality of engaging projections are provided on an inner wall portion of the recess of the accessory, the engaging projections being arranged at a predetermined pitch in a circumferential direction of the inner wall portion and projecting toward an inner side of the recess,
a plurality of groove portions that are arranged at the predetermined pitch in the circumferential direction of the valve seat body and open to the outside in an insertion direction in which the valve body is inserted into the recess and in a direction orthogonal to the insertion direction are arranged in the outer wall portion of the valve seat body,
a plurality of protruding portions that are positioned in the plurality of groove portions and protrude in the orthogonal direction are arranged on the outer wall portion of the valve seat main body,
the shapes of the inner peripheral surfaces of the grooves and the outer peripheral surfaces of the protrusions are set as follows: wherein the engaging protruding portion enters the groove portion while being guided along the inner circumferential surface of the groove portion or the outer circumferential surface of the protruding portion in the process of inserting the valve seat body into the recess, and is guided between a first opposing portion of the inner circumferential surface of the groove portion and a second opposing portion of the outer circumferential surface of the protruding portion that oppose each other in the insertion direction when the valve seat body is further inserted into the recess,
the liquid fuel burner includes an energy storage mechanism that stores energy while the valve member is being pushed up in a direction away from the valve seat by the jack-up pin when a pushing-down force toward the accessory is applied to the liquid fuel cartridge, and releases the energy to press the protruding portion against the engaging protruding portion when the pushing-down force to the liquid fuel cartridge is released.
2. The liquid fuel burner of claim 1,
a jack-up energy storage member for storing energy by the valve seat main body inserted into the recess is provided in the recess of the attachment,
the energy storage mechanism is composed of the energy storage component for opening and closing and the energy storage component for jacking.
3. The liquid fuel burner of claim 1,
the energy storage mechanism is the energy storage component for opening and closing of the liquid fuel storage cylinder.
4. The liquid fuel burner of claim 1,
the contour shape of the inner peripheral surface of the groove portion of the plurality of groove portions as viewed from the outside in the orthogonal direction has a shape in which the dimension in the circumferential direction of the valve seat main body decreases toward the first opposing portion of the inner peripheral surface of the groove portion,
the contour shape of the projection outer peripheral surface of the plurality of projections has a shape in which a dimension in the circumferential direction of the valve seat main body becomes larger toward the second opposing portion of the projection outer peripheral surface.
5. The liquid fuel burner of claim 4,
the shape of the distal end 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 distal end portion in the insertion direction of the protruding portion, and the shape of the engaging convex portion each have the following shapes: when the engaging projection abuts against the distal end portion of the wall portion in the insertion direction or the distal end portion of the protruding portion in the insertion direction, the engaging projection slides into the groove portion.
6. The liquid fuel burner of claim 5,
the shapes of the leading end portion of the wall portion in the insertion direction and the leading end portion of the protrusion in the insertion direction have a shape in which the circumferential dimension of the valve seat main body gradually decreases toward the insertion direction,
the shape of the distal end portion of the engaging projection facing in the pull-out direction opposite to the insertion direction has a shape in which the circumferential dimension of the inner wall portion gradually decreases in the pull-out direction.
7. The liquid fuel burner of claim 6,
an end surface of the protruding portion in the pull-out direction is formed of a curved surface that is larger than an end surface of the engaging protruding portion in the insertion direction and that is curved so as to protrude in the insertion direction.
8. The liquid fuel burner of claim 1,
the predetermined pitch is 360 DEG/N, and N is an integer of 2 to 6 inclusive.
9. The liquid fuel burner of claim 8,
and N is 4.
10. A liquid fuel cartridge connecting structure for detachably connecting a liquid fuel cartridge to a liquid fuel tank having a fuel supply port of a liquid fuel burner, the liquid fuel cartridge including a cartridge body and an on-off valve assembly attached to a fuel discharge port of the cartridge body, the on-off valve assembly including a valve seat body having a valve seat, a valve element having a valve member cooperating with the valve seat, and an energy storage member for opening and closing for generating a pressing force for pressing the valve member against the valve seat in a discharge state,
it is characterized in that the preparation method is characterized in that,
the liquid fuel cartridge connecting structure includes an attachment which is attached to the fuel supply port and includes a recess into which the valve seat main body is fitted, a lift pin which is provided in the recess and lifts up the valve body in a state in which the valve seat main body is fitted in the recess, and a fuel discharge hole which is provided in the recess and through which the liquid fuel discharged from the liquid fuel cartridge into the recess passes,
a plurality of engaging projections are provided on an inner wall portion of the recess of the accessory, the engaging projections being arranged at a predetermined pitch in a circumferential direction of the inner wall portion and projecting toward an inner side of the recess,
a plurality of groove portions that are arranged at the predetermined pitch in the circumferential direction of the valve seat body and open to the outside in an insertion direction in which the valve body is inserted into the recess and in a direction orthogonal to the insertion direction are arranged in the outer wall portion of the valve seat body,
a plurality of protruding portions that are positioned in the plurality of groove portions and protrude in the orthogonal direction are arranged on the outer wall portion of the valve seat main body,
the shapes of the inner peripheral surfaces of the grooves and the outer peripheral surfaces of the protrusions are set as follows: wherein the engaging protruding portion enters the groove portion while being guided along the inner circumferential surface of the groove portion or the outer circumferential surface of the protruding portion in the process of inserting the valve seat body into the recess, and is guided between a first opposing portion of the inner circumferential surface of the groove portion and a second opposing portion of the outer circumferential surface of the protruding portion that oppose each other in the insertion direction when the valve seat body is further inserted into the recess,
the liquid fuel cartridge connecting structure includes an energy storage mechanism that stores energy while the valve member is being pushed up in a direction away from the valve seat by the jack-up pin when a pushing-down force toward the accessory is applied to the liquid fuel cartridge, and releases the energy to press the protruding portion against the engaging protruding portion when the pushing-down force to the liquid fuel cartridge is released.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-016540 | 2017-02-01 | ||
| JP2017016540 | 2017-02-01 | ||
| JP2018-012402 | 2018-01-29 | ||
| JP2018012402A JP6977966B2 (en) | 2017-02-01 | 2018-01-29 | Liquid fuel combustor and liquid fuel cartridge connection structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108375068A CN108375068A (en) | 2018-08-07 |
| CN108375068B true CN108375068B (en) | 2021-06-08 |
Family
ID=61094343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810100214.4A Active CN108375068B (en) | 2017-02-01 | 2018-01-31 | Liquid fuel burner and liquid fuel cartridge connecting structure |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP3358255B1 (en) |
| CN (1) | CN108375068B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0493771A1 (en) * | 1990-12-25 | 1992-07-08 | Predrag Pesovic | Check valve |
| DE29616851U1 (en) * | 1996-09-27 | 1996-12-05 | Hielscher Lutz | Device for automatically regulating the fuel supply as a function of the pressure of a medium heated by means of this fuel, in particular for model-making vehicles |
| EP2628694A1 (en) * | 2005-12-02 | 2013-08-21 | Tuttoespresso S.r.l. | Pressure beverage cartridge |
| CN204901164U (en) * | 2015-08-25 | 2015-12-23 | 西安同华橡塑模具制品厂 | Quick -operation joint valve |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US497896A (en) * | 1893-05-23 | The morris petxss co | ||
| JPH0752007B2 (en) * | 1987-09-04 | 1995-06-05 | 松下電器産業株式会社 | Refueling device |
| US5662468A (en) * | 1995-08-14 | 1997-09-02 | Henderson; Richard W. | Device that prevents flareup in liquid fuel burners |
| JPH09269118A (en) * | 1996-03-29 | 1997-10-14 | Toyotomi Co Ltd | Structure of oil tank for oil burning appliance |
| JP2001147010A (en) * | 1999-11-19 | 2001-05-29 | Dainichi Co Ltd | Liquid fuel supplying device |
| NL1021283C2 (en) * | 2002-08-14 | 2004-02-17 | Pvg Internat B V | Assembly of a heater and a fuel holder that can be placed on the heater. |
| JP5391533B2 (en) * | 2007-07-17 | 2014-01-15 | 株式会社トヨトミ | Cartridge tank |
-
2018
- 2018-01-30 EP EP18154198.8A patent/EP3358255B1/en active Active
- 2018-01-31 CN CN201810100214.4A patent/CN108375068B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0493771A1 (en) * | 1990-12-25 | 1992-07-08 | Predrag Pesovic | Check valve |
| DE29616851U1 (en) * | 1996-09-27 | 1996-12-05 | Hielscher Lutz | Device for automatically regulating the fuel supply as a function of the pressure of a medium heated by means of this fuel, in particular for model-making vehicles |
| EP2628694A1 (en) * | 2005-12-02 | 2013-08-21 | Tuttoespresso S.r.l. | Pressure beverage cartridge |
| CN204901164U (en) * | 2015-08-25 | 2015-12-23 | 西安同华橡塑模具制品厂 | Quick -operation joint valve |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3358255A1 (en) | 2018-08-08 |
| EP3358255B1 (en) | 2020-07-22 |
| CN108375068A (en) | 2018-08-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2018018670A1 (en) | Excess pressure protection switch and pressure appliance provided with same | |
| CN108375068B (en) | Liquid fuel burner and liquid fuel cartridge connecting structure | |
| JP2006093001A (en) | Coupler | |
| CN108458338B (en) | Liquid fuel burner | |
| KR102471359B1 (en) | Liquid fuel combustor and connecting structure of liquid fuel cartridge | |
| WO2012063808A1 (en) | Cap attaching structure | |
| JP2021015719A (en) | Lever-type connector | |
| CN111938199A (en) | Atomizer, atomization device and electronic cigarette | |
| EP3358254A1 (en) | Liquid fuel burner | |
| CN212488457U (en) | Atomizer, atomization device and electronic cigarette | |
| CN215680870U (en) | Battery box structure for vehicle | |
| TWM572621U (en) | Battery charging stand | |
| JP6371718B2 (en) | Manufacturing method of switch device | |
| JP3109059U (en) | Installation device for cassette cylinder fuel cylinder | |
| CN211609499U (en) | Food processor safe in utilization | |
| JP5986460B2 (en) | Cartridge oil tank | |
| KR200151175Y1 (en) | Safeguard device of gas lighter | |
| JP4226467B2 (en) | Cartridge tank | |
| CN209734946U (en) | Handle TP cover and handle | |
| JP3120587U (en) | Safety syringe | |
| JP2024032335A (en) | Discharge container | |
| KR100365825B1 (en) | device for ink injection of printer cartridge | |
| JP2017156081A (en) | Liquid fuel burner | |
| JPH08273642A (en) | Dry battery case | |
| JP2022135624A (en) | switch structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |