JP6814338B2 - Liquid fuel combustor - Google Patents

Description

The present invention relates to a liquid fuel combustor that burns liquid fuel in a liquid fuel tank with a burner.

Conventionally, some liquid fuel combustors have a fuel leakage prevention structure for preventing the liquid fuel in the liquid fuel tank from leaking when the fuel falls. For example, in the liquid fuel combustor described in FIG. 1 of JP-A-9-269118 (Patent Document 1), a protrusion 3a is provided on the movable plate 8, and when the cartridge tank 4 is attached to the fuel supply port, the cartridge is installed. The on-off valve 5 of the tank 4 is pushed up by the protrusion 3a, and the movable plate 8 is pushed down to form a flow path for the liquid fuel from the cartridge tank 4 to the liquid fuel tank 2. When the cartridge tank 4 is removed, the on-off valve 5 is closed, the movable plate 8 is pushed up by the spring material 9, the opening 7a is closed, and the flow path of the liquid fuel is blocked. Therefore, even if the liquid fuel combustor falls, the cartridge tank 4 is attached to the fuel supply port when the cartridge tank 4 is not attached to the fuel supply port or when the cartridge tank 4 is attached to the fuel supply port. The liquid fuel does not leak from the liquid fuel tank and / or the cartridge tank because the opening 7a is closed by the movable plate 8 even when the fuel is removed from the tank.

Japanese Unexamined Patent Publication No. 9-269118

However, in the structure of the liquid fuel combustor described in Patent Document 1, since the movable plate 8 is pushed down by the weight of the cartridge tank 4 and the liquid fuel filled therein, the liquid fuel is consumed and the cartridge. When the tank 4 becomes lighter, the force for pushing down the movable plate 8 becomes weaker, and the cartridge tank 4 is pushed up by the protrusion 3a, which causes a problem that the fixed state of the cartridge tank 4 becomes unstable.

If the liquid fuel combustor falls with the cartridge tank 4 attached to the fuel supply port, the liquid fuel flow path is appropriate unless the cartridge tank 4 is detached from the fuel supply port and the opening 7a is closed. There is a possibility that the liquid fuel will leak out without being shut off.

Further, in the structure of the liquid fuel combustor described in Patent Document 1, the opening 7a can be easily opened by accidentally pushing down the protrusion 3a with a finger or the like while the cartridge tank 4 is not attached to the fuel supply port. There is a problem that it will end up. Similarly, the on-off valve 5 can be easily opened with a finger or the like.

An object of the present invention is a liquid fuel combustor in which the cartridge tank is securely fixed to the fuel supply port and the liquid fuel does not leak even if the liquid fuel combustor falls while the cartridge tank is attached to the fuel supply port. Is to provide.

Another object of the present invention is to provide a liquid fuel tank and a liquid fuel combustor in which the cartridge tank cannot be opened by a simple operation with the cartridge tank removed from the fuel supply port.

The liquid fuel combustor of the present invention has a cartridge tank having a first on-off valve assembly having a first on-off valve mechanism at the fuel discharge port, and a second on-off valve mechanism having a second on-off valve mechanism at the fuel supply port. It includes a liquid fuel tank with an on-off valve assembly and a burner assembly for burning the liquid fuel in the liquid fuel tank. The first on-off valve assembly includes a first valve seat body that comprises a first valve seat and is attached to a fuel outlet, and a first valve member that cooperates with the first valve seat. It has one valve body and a first energy storage member that generates a pressing force that presses the first valve member against the first valve seat in the released state. The second on-off valve assembly includes a second valve seat body that includes a second valve seat and is attached to the fuel supply port, and a second valve member that cooperates with the second valve seat. It has two valve bodies and a second energy storage member that generates a pressing force that presses the second valve member against the second valve seat in the released state. In the first on-off valve assembly and the second on-off valve assembly, the first valve member is separated from the first valve seat in a state where the first valve seat body and the second valve seat body are fitted. Further, the first storage member is in the storage state, the second valve member is separated from the second valve seat, and the second storage member is in the storage state, and the first valve seat body and the second valve are in the storage state. When the seat body is not fitted, the first energy storage member is in the released state, the first valve member is in contact with the first valve seat, and the second energy storage member is in the released state. The second valve member is configured to come into contact with the second valve seat.

In the liquid fuel combustor of the present invention, the first on-off valve assembly is first along a virtual center line along the direction in which the first valve seat body and the second valve seat body are fitted. The valve body is held so as to be linearly movable, and after the first valve seat body and the second valve seat body are fitted between the first valve seat body and the first valve body. When the first valve seat main body rotates by a predetermined angle in one direction around the center line, the first valve body moves in the direction in which the first valve member separates from the first valve seat, and the first valve body first moves. A rotary motion-linear motion conversion mechanism is configured that allows the valve body of the second valve body to push the second valve body in a direction away from the second valve seat. The rotary motion-linear motion conversion mechanism is configured to allow the first energy storage member to be in the released state when the first valve seat body and the second valve seat body are in the non-fitting state. Has been done.

With this configuration, according to the present invention, unless the first valve seat main body and the second valve seat main body are fitted and the first valve seat main body rotates by a predetermined angle in one direction. , The first and second on-off valve assemblies do not open. Therefore, in both the liquid fuel tank and the cartridge tank, the on-off valve assembly does not open when the liquid fuel combustor is overturned. Therefore, according to the present invention, the liquid fuel does not leak from the liquid fuel tank and the cartridge tank when the liquid fuel combustor is overturned.

When the first valve seat body and the second valve seat body are merely fitted between the first valve seat body and the second valve seat body, the engaged state does not occur. It is also possible to provide an engaging structure that engages the first valve seat body and the second valve seat body when the first valve seat body rotates by a predetermined angle in one direction. If such an engaging structure is provided, when the first valve seat main body is rotated, the first valve seat main body and the second valve seat main body are engaged by the engaging structure. It becomes easy to rotate the valve seat body of 1. Further, when the first and second on-off valve assemblies are open, the first valve seat body and the second valve seat body are engaged with each other, so that the cartridge tank is attached to the fuel supply port. Even if the liquid fuel combustor falls, the cartridge tank will not come off and the liquid fuel will not leak.

The configuration for realizing the rotary motion-linear motion conversion mechanism is arbitrary. For example, a guide portion is provided on the inner wall portion of the first valve seat body, a guided portion guided by the guide portion is provided on the outer wall portion of the first valve body, and a locked portion is provided on the second valve seat body. When a locking portion to be provided and locked to the locked portion is provided on the first valve body and the first valve seat main body is fitted to the second valve seat main body, the locking portion becomes the locked portion. The first valve seat main body and the second valve seat main body are configured so as to be locked to. Then, when the first valve seat main body rotates by a predetermined angle in one direction while the locking portion is locked to the locked portion, the guided portion is guided by the guide portion, and the first valve member is moved. The first valve body may move in a direction away from the first valve seat. In this way, the rotary motion-linear motion conversion mechanism can be realized by a simple configuration and can be easily operated.

More specifically, the locked portion is formed as a protruding portion extending from the end portion of the first valve body in a direction parallel to the center line and away from the cartridge tank, and the locked portion is thicker than the length dimension of the protruding portion. It has a short size and is provided on the second valve seat, and the locked portion may be provided with a through hole into which a protruding portion is inserted. Then, when the first valve seat body and the second valve seat body are only fitted, the protruding portion does not push the second valve body, and the first valve seat body is in one direction. The first valve body moves in a direction in which the first valve member moves away from the first valve seat by rotating at a predetermined angle, so that the protrusion pushes the second valve body and the second valve member moves. Keep away from the second valve seat. With this configuration, the second valve body can be pushed by using the protruding portion that is the locking portion provided on the first valve body to move the second valve body. The structure of the first and second on-off valve assemblies can be simplified. Further, the first and second on-off valve assemblies will not be opened by a simple method such as pushing down with a finger or the like with the cartridge tank removed from the fuel supply port.

In the rotary motion-linear motion conversion mechanism, a guide portion is provided on the inner wall portion of the first valve seat body, a guided portion guided by the guide portion is provided on the outer wall portion of the first valve body, and the first valve body is provided. Is provided with a locked portion, the second valve body is provided with a locking portion locked to the locked portion, and when the first valve seat main body is fitted to the second valve seat main body, the locking portion is locked. The first valve seat main body and the second valve seat main body may be configured so that the portion is locked to the locked portion. Then, when the first valve seat main body rotates by a predetermined angle in one direction while the locking portion is locked to the locked portion, the guided portion is guided by the guide portion, and the first valve member is moved. The first valve body may be moved in a direction away from the valve seat.

More specifically, the locked portion is provided on the first valve body as a protruding portion extending from the end of the second valve body in a direction parallel to the center line and away from the liquid fuel tank. As a bottomed recess, a through hole through which the protruding portion penetrates can be formed in the second valve seat body. Then, when the first valve seat body and the second valve seat body are only fitted, the bottom of the recess does not push the protruding portion, and the first valve seat body is predetermined in one direction. By rotating the angle and moving the first valve body in the direction in which the first valve member moves away from the first valve seat, the bottom of the recess pushes the protruding portion and the second valve member moves from the second valve seat. You may move away. With this configuration, the first valve body has no protruding portion and no catching portion. Therefore, the user mistakenly operates the first valve body to rotate the first valve body to open and close the first on-off valve assembly. You can get the advantage that you don't have to worry about it. Although the second on-off valve assembly can be opened and closed by pushing the protruding portion, the liquid fuel does not leak unless the protruding portion is pushed after the fuel supply port is turned downward.

In the above, when the first valve seat body rotates by a predetermined angle in one direction, the first valve body included in the first on-off valve assembly is configured to move linearly, but on the contrary. It is also possible to configure the second valve body included in the second on-off valve assembly to move linearly when the first valve seat body rotates by a predetermined angle in one direction. For this purpose, the second on-off valve assembly has the second valve body straight along the virtual center line along the direction in which the first valve seat body and the second valve seat body are fitted. It is held so as to be movable, and a center line is provided between the second valve seat body and the second valve body after the first valve seat body and the second valve seat body are fitted. When the first valve seat body rotates by a predetermined angle in one direction with respect to the center, the second valve body moves in the direction in which the second valve member separates from the second valve seat, and the second valve body moves. A rotary motion-linear motion conversion mechanism is configured that allows the first valve body to be pushed away from the first valve seat by the first valve member. Then, the rotary motion-linear motion conversion mechanism allows the second energy storage member to be in the released state when the first valve seat body and the second valve seat body are in the non-fitting state. It may be configured as. Also in this case, the first and second on-off valve assemblies are assembled unless the first valve seat body and the second valve seat body are fitted and the first valve seat body rotates by a predetermined angle in one direction. Never opens. Therefore, neither the liquid fuel tank nor the cartridge tank opens the on-off valve assembly when the liquid fuel combustor is overturned. Therefore, even if the liquid fuel combustor is overturned, the liquid fuel does not leak from the liquid fuel tank and the cartridge tank.

Also in this example, when the first valve seat body and the second valve seat body are merely fitted between the first valve seat body and the second valve seat body, the engagement state is established. However, an engaging structure may be provided in which the first valve seat body and the second valve seat body are engaged with each other when the first valve seat body rotates by a predetermined angle in one direction. ..

Further, the configuration for realizing the rotary motion-linear motion conversion mechanism is also arbitrary, and the same configuration as the above example can be used. For example, a guide portion is provided on the inner wall portion of the second valve seat body, a guided portion guided by the guide portion is provided on the outer wall portion of the second valve body, and a locked portion is provided on the first valve seat body. When the second valve body is provided with a locking portion to be locked to the locked portion and the first valve seat main body is fitted to the second valve seat main body, the locking portion becomes the locked portion. The first valve seat main body and the second valve seat main body are configured so as to be locked to. Then, when the first valve seat main body rotates by a predetermined angle in one direction while the locking portion is locked to the locked portion, the guided portion is guided by the guide portion, and the second valve member is moved. The second valve body may move in the direction away from the second valve seat. In this way, the rotary motion-linear motion conversion mechanism can be realized by a simple configuration and can be easily operated.

More specifically, the locking portion is a protrusion extending from the end of the second valve body in a direction parallel to the center line and away from the liquid fuel tank, and the locked portion is larger than the length dimension of the protrusion. The thickness dimension is short, and it is provided in the first valve seat, and the locked portion may be provided with a through hole into which a protruding portion is inserted. Then, when the first valve seat main body and the second valve seat main body are only fitted, the protruding portion does not push the first valve body, and the first valve seat main body is in one direction. The second valve body moves in a direction in which the second valve member moves away from the second valve seat by rotating at a predetermined angle, so that the protrusion pushes the first valve body and the first valve member moves. Keep away from the first valve seat. With this configuration, similarly, the first valve body can be pushed and the first valve body can be moved by using the protruding portion which is the locking portion provided on the second valve body. Therefore, the structure of the first and second on-off valve assemblies can be simplified. Further, the first and second on-off valve assemblies will not be opened by a simple method such as pushing down with a finger or the like with the cartridge tank removed from the fuel supply port.

The cartridge tank is assumed to be made of metal, but may be made of any material, for example, one made of resin.

It is a figure which shows the cartridge tank which constitutes the liquid fuel combustor of this embodiment, a liquid fuel tank, a fuel tank connection part, and a burner assembly. It is an exploded perspective view of the first on-off valve assembly. (A) is a plan view of the first on-off valve assembly, (B) is a sectional view taken along line BB, and (C) is a sectional view taken along line CC. It is an exploded perspective view of the 2nd on-off valve assembly. (A) is a plan view of the second on-off valve assembly, and (B) is a sectional view taken along line BB. It is a figure which shows the state which inserted the cartridge tank into the fuel tank connecting part. It is a figure which shows the state which is rotating with the cartridge tank inserted in the fuel tank connecting part. It is a figure which shows the state which rotated the cartridge tank and fixed it to the fuel tank connecting part. It is an exploded perspective view of the 1st on-off valve assembly constituting the liquid fuel combustor of the 2nd Embodiment. FIG. 3 is an exploded perspective view of a second on-off valve assembly constituting the liquid fuel combustor of the second embodiment.

Hereinafter, embodiments of the liquid fuel combustor of the present invention will be described in detail with reference to the drawings.

<First Embodiment>
[overall structure]
FIG. 1 is a diagram showing a positional relationship between the cartridge tank 3 used in the liquid fuel combustor 1 of the present embodiment, the liquid fuel tank 5, the fuel tank connecting portion 6, and the burner assembly 7 before being combined. .. In FIG. 1, the liquid fuel combustor main body is shown in a partially broken state so that the liquid fuel tank 5 and the burner assembly 7 can be seen. In the present embodiment, the cartridge tank 3 is filled with liquid fuel (eg, kerosene), and the cartridge tank 3 is attached to the fuel supply port of the liquid fuel tank 5 provided at the fuel tank connecting portion 6. , The structure is such that the liquid fuel is supplied to the liquid fuel tank 5. The liquid fuel supplied to the liquid fuel tank 5 is burned and consumed by the burner assembly 7. The fuel discharge port 4 of the cartridge tank 3 is provided with a first on-off valve assembly 9. Further, the fuel supply port 8 of the liquid fuel tank 5 is provided with a second on-off valve assembly 11.

[First on-off valve assembly]
FIG. 2 is an exploded perspective view of the first on-off valve assembly 9 provided at the fuel discharge port 4 of the cartridge tank 3, and FIG. 3 (A) is a plan view of the first on-off valve assembly 9, (B). Is a sectional view taken along line BB, and (C) is a sectional view taken along line CC. In these figures, the first on-off valve assembly 9 includes a first valve seat body 13, a first valve body 15, a first valve member 17 composed of an O-ring, and a coil spring-shaped first. It is configured by combining with the energy storage member 19.

The first valve seat main body 13 is a member attached to the fuel discharge port 4 of the cartridge tank 3, and is formed in a cylindrical shape so that the cartridge tank 3 and the outside communicate with each other. A first valve seat 21 is formed at a portion that comes into contact with the first valve member 17. A first shaft portion 25 supported by a shaft support portion 23 integrally formed with the inner wall of the first valve seat main body 13 extends to the central portion. The first shaft portion 25 extends along a virtual center line IL along the direction in which the first valve seat main body 13 and the second valve seat main body 39 described later are fitted. A coil spring-shaped first energy storage member 19 is fitted to the first shaft portion 25, and one end 19A thereof comes into contact with the shaft support portion 23. A guide portion 27 is further formed on the inner wall of the first valve seat main body 13, and the guided portion provided on the first valve body 15 described later is configured to be guided by the guide portion 27. ing. On the outer wall of the first valve seat body 13, a pair of engaging portions 29 that engage with the second valve seat body 39, which will be described later, to form an engaging structure face each other in the radial direction of the first valve seat body 13. It is formed in the position to be. The pair of engaging portions 29 are formed of grooves that open outward in the radial direction, and form a path through which the pair of engaged portions 59 pass.

The first valve body 15 is a member that cooperates with the first valve seat 21 of the first valve seat main body 13. The first valve body 15 has a first valve member fixing portion 31 to which the first valve member 17 is fixed around the first valve body 15 and a first valve seat main body 13 that engages with the first energy storage member 19. A pair of extending first storage member engaging portions 33 and a pair of protruding portions 35 which are locking portions extending in a direction away from the cartridge tank 3 in parallel with the center line IL from the end portion of the first valve body 15. It has. A bent portion 33A is formed at the end of the pair of first accumulator engaging portions 33 on the cartridge tank 3 side, and the bent portion 33A comes into contact with the other end 19B of the first accumulator member 19. As a result, the first energy storage member 19 is held at a predetermined position, and the first valve body 15 is held with respect to the first valve seat main body 13. As a result, the first valve body 15 is urged by the first accumulator member 19, and the first accumulator member 19 makes the first valve member 17 into the first valve seat 21 in the released state. A pressing force is generated. A guided portion 37 guided by a guide portion 27 is provided on the side surface of the pair of first accumulator member engaging portions 33. The pair of protruding portions 35 are locked to a locked portion 51, which will be described later, provided on the second valve seat main body 39.

When the first valve seat body 13 is rotated by a predetermined angle in one direction by the guide portion 27 and the guided portion 37, the guided portion 37 is guided by the guide portion 27, and the first valve member 17 becomes the first. The first valve body 15 moves (linear motion) in the direction away from the valve seat 21.

The first valve member 17 is fixed to the first valve member fixing portion 31 of the first valve body 15 and comes into contact with the first valve seat 21 of the first valve seat main body 13 to obtain the first valve member 17. An on-off valve is formed between the valve seat main body 13 and the first valve body 15.

[Second on-off valve assembly]
FIG. 4 is an exploded perspective view of the second on-off valve assembly 11 provided in the fuel supply port 8 of the liquid fuel tank 5 provided in the fuel tank connecting portion 6, and FIG. 5 (A) is the second A plan view of the on-off valve assembly 11, (B) is a sectional view taken along line BB.

The second on-off valve assembly 11 includes a fuel tank connecting portion 6, a second valve seat main body 39, a second valve body 41, a second valve member 43 composed of an O-ring, and a coil spring-shaped second valve member 43. The two energy storage members 45 are combined and configured.

The fuel tank connecting portion 6 is provided with a fuel supply port 8 in the central portion, and has a structure in which members such as the second valve seat main body 39 are incorporated. At the center, a shaft insertion portion 49 formed in a tubular shape into which the second valve body 41 and the second energy storage member 45 are fitted is provided along the center line IL described above.

The second valve seat main body 39 is a member attached to the fuel supply port 8, and is configured to fit the first valve seat main body 13. A locked portion 51 is provided in the central portion to which a pair of protruding portions 35 of the first valve body 15 are locked. The locked portion 51 is formed with a pair of through holes 53 into which the protruding portion 35 is inserted and a fuel passage hole 55 through which the liquid fuel passes. The thickness dimension of the locked portion 51 is shorter than the length dimension of the protruding portion 35. A second valve seat 57 that comes into contact with the second valve member 43 is formed on the liquid fuel tank 5 side of the locked portion 51. On the inner wall of the second valve seat main body 39, a pair of protruding engaged portions 59 with which the pair of engaging portions 29 of the first valve seat main body 13 are engaged are formed.

The second valve body 41 is a member that cooperates with the second valve seat 57 of the second valve seat main body 39. The second valve body 41 is inserted and supported by a second valve member fixing portion 61 in which the second valve member 43 is fixed around the second valve member 43 and a shaft insertion portion 49 provided in the fuel tank connecting portion 6. A second shaft portion 63 extending along the center line IL is provided. The second shaft portion 63 is inserted into the shaft insertion portion 49 with the second accumulator member 45 fitted so as to surround the shaft insertion portion 49, and one end 45A of the second accumulator member 45 is inserted. The second valve body 41 is urged by the second accumulator member 45 by abutting with the fuel tank connecting portion 6 and the other end 45B abutting with the second valve body 41, and the second accumulator member 45 generates a pressing force that presses the second valve member 43 against the second valve seat 57 in the released state.

The second valve member 43 is fixed to the second valve member fixing portion 61 of the second valve body 41 and comes into contact with the second valve seat 57 of the second valve seat main body 39 to form a second valve member 43. An on-off valve is formed between the valve seat main body 39 and the second valve body 41.

[Supply of fuel to the liquid fuel tank]
FIG. 6 is a diagram showing a state in which the cartridge tank 3 is inserted into the fuel tank connecting portion 6, and FIG. 7 is a diagram showing a state in which the cartridge tank 3 is rotated while being inserted into the fuel tank connecting portion 6. FIG. 8 is a diagram showing a state in which the cartridge tank 3 is rotated and fixed to the fuel tank connecting portion 6.

When supplying liquid fuel to the liquid fuel tank 5, first, as shown in FIG. 6, the cartridge tank 3 is inserted into the fuel tank connecting portion 6, and the first valve seat main body 13 and the second valve seat main body 39 are inserted. To fit. At the time of fitting, the pair of protruding portions 35 of the first valve body 15 are inserted into the pair of through holes 53 provided in the locked portion 51 of the second valve seat main body 39, and the first The members are aligned so that the pair of engaging portions 29 of the valve seat main body 13 of the above valve seat body 13 engages the pair of engaged portions 59 of the second valve seat main body 39. In this state, the protruding portion 35 is in contact with the second valve body 41.

Next, in this state, as shown in FIG. 7, the cartridge tank 3 is rotated by a predetermined angle with respect to the fuel tank connecting portion 6. When the cartridge tank 3 is rotated, the pair of protrusions 35 are locked by the pair of through holes 53, so that the first valve body 15 does not rotate and the first valve seat body 13 side rotates. Then, the guided portion 37 is guided by the guide portion 27, the first valve member 17 is separated from the first valve seat 21, and the first energy storage member 19 is in the energy storage state. As a result, the protrusion 35 pushes the second valve body 41, and at the same time, the second valve member 43 is separated from the second valve seat 57 and the second storage member 45 is in the storage state. Become. As described above, in the present embodiment, the rotational motion for rotating the first valve seat main body 13 fixed to the cartridge tank 3 is converted into the linear motion of the first valve body 15 and the second valve body 41. A rotary motion-linear motion conversion mechanism is configured.

The rotation of the cartridge tank 3 stops when the pair of engaged portions 59 enters from the inlet of the pair of engaging portions 29 and moves to the end point, and cannot rotate any more, resulting in the state shown in FIG. In the state of FIG. 8, the first valve member 17 is located at the position farthest from the first valve seat 21, and similarly, the second valve member 43 is also farthest from the second valve seat 57. Exists in position. The first storage member 19 and the second storage member 45 are in a compressed storage state. In this state (including during the rotation of the cartridge tank 3), the first on-off valve assembly 9 and the second on-off valve assembly 11 are opened, and the cartridge tank 3 and the liquid fuel tank 5 are in communication with each other. , The liquid fuel flow path is formed, and the liquid fuel in the cartridge tank 3 reaches the liquid fuel tank 5 via the first on-off valve assembly 9 and the second on-off valve assembly 11.

When the cartridge tank 3 is removed, the cartridge tank 3 is rotated in the direction opposite to that when the cartridge tank 3 is attached, so that the first energy storage member 19 is released by the rotary motion-linear motion conversion mechanism. The valve member 17 is in contact with the first valve seat 21, and the second energy storage member 45 is in the released state, and the second valve member 43 is in contact with the second valve seat 57. As a result, the first on-off valve assembly 9 and the second on-off valve assembly 11 are closed, and the fuel supply from the cartridge tank 3 to the liquid fuel tank 5 is cut off.

In the above embodiment, when the first valve seat body 13 rotates by a predetermined angle in one direction, the first valve body 15 constituting the first on-off valve assembly 9 is configured to move linearly. However, on the contrary, when the first valve seat main body 13 rotates by a predetermined angle in one direction, the second valve body 41 constituting the second on-off valve assembly 11 is configured to move linearly. Is also possible. For this purpose, specifically, the second on-off valve assembly 11 is set on the virtual center line IL along the direction in which the first valve seat body 13 and the second valve seat body 39 are fitted. A second valve body 41 is held so as to be linearly movable along the line, and a first valve seat body 13 and a second valve are held between the second valve seat body 39 and the second valve body 41. After the seat body 39 is fitted, when the first valve seat body 13 rotates by a predetermined angle in one direction around the center line IL, the second valve member 43 separates from the second valve seat 57. The second valve body 41 moves in the direction, allowing the second valve body 41 to push the first valve body 15 in the direction away from the first valve seat 21 by the first valve member 17. The rotational motion-linear motion conversion mechanism may be configured.

<Second Embodiment>
9 and 10 are views showing the liquid fuel combustor of the second embodiment. FIG. 9 is an exploded perspective view of the first on-off valve assembly 109 constituting the liquid fuel combustor of the second embodiment, and FIG. 10 is a view of the liquid fuel combustor of the second embodiment. It is an exploded perspective view of the 2nd on-off valve assembly 111. In the second embodiment, the same members as those in the first embodiment are designated by reference numerals obtained by adding a number of 100 to the number of reference numerals given in FIGS. 1 to 5, and the description thereof will be omitted.

In the second embodiment, the second valve body 141 is provided with a pair of protruding portions 135, and the central portion of the second valve seat main body 139 is provided with a pair of protruding portions 135 penetrating. A through hole 165 is formed. Correspondingly, the first valve body 115 is formed with a pair of bottomed recesses 153 for locking the pair of protrusions 135, and the first valve body 115 is locked. It is also configured to play the role of. When the first valve seat body 113 and the second valve seat body 139 are only fitted, the bottom of the pair of recesses 153 does not push the pair of protrusions 135, and the first valve seat body 113 The bottom of the pair of recesses 153 pushes the pair of protrusions 135 as the first valve body 115 moves in a direction that rotates a predetermined angle in one direction and the first valve member moves away from the first valve seat. The second valve member 143 is separated from the second valve seat 157.

With this configuration, the first valve body 115 has no protruding portion and no catching portion. Therefore, the user mistakenly operates the first valve body 115 with a finger to rotate the first valve body 115 to obtain the first on-off valve assembly 109. You can get the advantage that there is no risk of opening and closing. The second on-off valve assembly 111 can be opened and closed by pushing the protruding portion 135, but the liquid fuel does not leak unless the protruding portion 135 is pushed after the fuel supply port 108 is turned downward.

Although the embodiments of the present invention have been specifically described above, the present invention is not limited to these embodiments, and of course, changes can be made within the scope of the technical idea of the present invention. Is.

According to the present invention, even if the cartridge tank is securely fixed to the fuel supply port and the liquid fuel combustor falls while the cartridge tank is attached to the fuel supply port, the liquid fuel combustor does not leak liquid fuel. Can be obtained. Further, with the cartridge tank removed from the fuel supply port, it is possible to obtain a liquid fuel tank and a liquid fuel combustor in which the cartridge tank cannot be opened by a simple operation.

1 Liquid fuel combustor 3 Cartridge tank 4 Fuel discharge port 5 Liquid fuel tank 6 Fuel tank connection 7 Burner assembly 8 Fuel supply port 9 First on-off valve assembly 11 Second on-off valve assembly 13 First valve seat body 15 1st valve body 17 1st valve member 19 1st fuel storage member 21 1st valve seat 23 Shaft support part 25 1st shaft part 27 Guide part 29 Engagement part 31 1st valve member fixing part 33 First accumulator engaging portion 35 Protruding portion 37 Guided portion 39 Second valve seat body 41 Second valve body 43 Second valve member 45 Second accumulator member 49 Shaft insertion portion 51 Engagement Stop 53 Through hole 55 Fuel passage hole 57 Second valve seat 59 Engagement portion 61 Second valve member fixing portion 63 Second shaft portion

Claims (12)

A cartridge tank having a first on-off valve assembly with a first on-off valve mechanism at the fuel outlet, and
A liquid fuel tank having a second on-off valve assembly with a second on-off valve mechanism at the fuel supply port, and
With a burner assembly for burning the liquid fuel in the liquid fuel tank
The first on-off valve assembly comprises a first valve seat body provided with a first valve seat and attached to the fuel outlet, and a first valve member that cooperates with the first valve seat. It has a first valve body provided, and a first energy storage member that generates a pressing force that presses the first valve member against the first valve seat in a released state.
The second on-off valve assembly comprises a second valve seat body provided with a second valve seat and attached to the fuel supply port, and a second valve member that cooperates with the second valve seat. It has a second valve body provided, and a second energy storage member that generates a pressing force that presses the second valve member against the second valve seat in the released state.
In a state where the first valve seat main body and the second valve seat main body are fitted, the first valve member is separated from the first valve seat and the first storage member is stored. In the state, the second valve member is separated from the second valve seat and the second storage member is in the storage state, and the first valve seat main body and the second valve seat main body are not. In the mated state, the first energy storage member is in the released state, the first valve member is in contact with the first valve seat, and the second energy storage member is in the released state. A liquid fuel combustor in which the first on-off valve assembly and the second on-off valve assembly are configured so that the second valve member comes into contact with the second valve seat.
In the first on-off valve assembly, the first valve body moves linearly along a virtual center line along the direction in which the first valve seat body and the second valve seat body are fitted. It is held in a possible manner, and after the first valve seat body and the second valve seat body are fitted between the first valve seat body and the first valve body, When the first valve seat main body rotates by a predetermined angle in one direction around the center line, the first valve body moves in a direction in which the first valve member separates from the first valve seat. A rotary motion-linear motion conversion mechanism is configured that allows the first valve body to push the second valve body in a direction away from the second valve seat. Ori,
The rotary motion-linear motion conversion mechanism allows the first energy storage member to be in a release state when the first valve seat body and the second valve seat body are in a non-fitting state. A liquid fuel combustor characterized by being configured to do so. An engaged state is provided between the first valve seat body and the second valve seat body when the first valve seat body and the second valve seat body are merely fitted. However, when the first valve seat main body rotates by a predetermined angle in the one direction, an engagement structure is provided in which the first valve seat main body and the second valve seat main body are engaged with each other. The liquid fuel combustor according to claim 1. A guide portion is provided on the inner wall portion of the first valve seat main body.
A guided portion guided by the guide portion is provided on the outer wall portion of the first valve body.
The second valve seat main body is provided with a locked portion.
The first valve body is provided with a locking portion that is locked to the locked portion.
When the first valve seat body is fitted to the second valve seat body, the first valve seat body and the second valve are locked so that the locked portion is locked to the locked portion. It is composed of the seat body,
When the first valve seat main body rotates by a predetermined angle in the one direction while the locked portion is locked to the locked portion, the guided portion is guided by the guide portion, and the first valve seat main body is guided by the guide portion. The liquid fuel combustor according to claim 1 or 2, wherein the first valve body moves in a direction in which the valve member of 1 moves away from the first valve seat. The locking portion is a protruding portion extending from the end of the first valve body in a direction parallel to the center line and away from the cartridge tank.
The locked portion has a thickness dimension shorter than the length dimension of the protruding portion and is provided in the second valve seat, and the locked portion has a through hole into which the protruding portion is inserted. It is provided,
When the first valve seat main body and the second valve seat main body are only fitted, the protruding portion does not push the second valve body, and the first valve seat main body is not pushed. Rotates a predetermined angle in the one direction, and the first valve body moves in a direction in which the first valve member moves away from the first valve seat, so that the protruding portion becomes the second valve body. The liquid fuel combustor according to claim 3, wherein the second valve member separates from the second valve seat by pressing. A guide portion is provided on the inner wall portion of the first valve seat main body.
A guided portion guided by the guide portion is provided on the outer wall portion of the first valve body.
The first valve body is provided with a locked portion and is provided with a locked portion.
The second valve body is provided with a locking portion that is locked to the locked portion.
When the first valve seat body and the second valve seat body are fitted, the first valve seat body and the second valve seat body and the second valve seat body are locked so that the locked portion is locked to the locked portion. It is composed of the valve seat body,
When the first valve seat main body rotates by a predetermined angle in the one direction while the locked portion is locked to the locked portion, the guided portion is guided by the guide portion, and the first valve seat main body is guided by the guide portion. The liquid fuel combustor according to claim 1 or 2, wherein the first valve body moves in a direction in which the valve member of 1 moves away from the first valve seat. The locking portion is a protruding portion extending from the end of the second valve body in a direction parallel to the center line and away from the liquid fuel tank.
The locked portion is a bottomed recess provided in the first valve body.
The second valve seat body is formed with a through hole through which the protruding portion penetrates.
When the first valve seat main body and the second valve seat main body are only fitted, the bottom of the recess does not push the protruding portion, and the first valve seat main body is the one. The first valve body moves in a direction in which the first valve member rotates by a predetermined angle in the direction away from the first valve seat, so that the bottom portion of the recess pushes the protrusion and the second valve seat. The liquid fuel combustor according to claim 5, wherein the valve member of the valve member is separated from the second valve seat. A cartridge tank having a first on-off valve assembly with a first on-off valve mechanism at the fuel outlet, and
A liquid fuel tank having a second on-off valve assembly with a second on-off valve mechanism at the fuel supply port, and
With a burner assembly for burning the liquid fuel in the liquid fuel tank
The first on-off valve assembly comprises a first valve seat body provided with a first valve seat and attached to the fuel outlet, and a first valve member that cooperates with the first valve seat. It has a first valve body provided, and a first energy storage member that generates a pressing force that presses the first valve member against the first valve seat in a released state.
The second on-off valve assembly comprises a second valve seat body provided with a second valve seat and attached to the fuel supply port, and a second valve member that cooperates with the second valve seat. It has a second valve body provided, and a second energy storage member that generates a pressing force that presses the second valve member against the second valve seat in the released state.
In a state where the first valve seat main body and the second valve seat main body are fitted, the first valve member is separated from the first valve seat and the first storage member is stored. In the state, the second valve member is separated from the second valve seat and the second storage member is in the storage state, and the first valve seat main body and the second valve seat main body are not. In the mated state, the first energy storage member is in the released state, the first valve member is in contact with the first valve seat, and the second energy storage member is in the released state. A liquid fuel combustor in which the first on-off valve assembly and the second on-off valve assembly are configured so that the second valve member comes into contact with the second valve seat.
In the second on-off valve assembly, the second valve body moves linearly along a virtual center line along the direction in which the first valve seat body and the second valve seat body are fitted. It is held in a possible manner, and after the first valve seat body and the second valve seat body are fitted between the second valve seat body and the second valve body, When the first valve seat main body rotates by a predetermined angle in one direction about the center line, the second valve body moves in a direction in which the second valve member separates from the second valve seat. A rotary motion-linear motion conversion mechanism is configured that allows the second valve body to push the first valve body in a direction away from the first valve seat. ,
The rotary motion-linear motion conversion mechanism allows the second energy storage member to be in a release state when the first valve seat body and the second valve seat body are in a non-fitting state. A liquid fuel combustor characterized by being configured to do so. An engaged state is provided between the first valve seat body and the second valve seat body when the first valve seat body and the second valve seat body are merely fitted. However, when the first valve seat main body rotates by a predetermined angle in the one direction, an engagement structure is provided in which the first valve seat main body and the second valve seat main body are engaged with each other. The liquid fuel combustor according to claim 7. A guide portion is provided on the inner wall portion of the second valve seat main body.
A guided portion guided by the guide portion is provided on the outer wall portion of the second valve body.
The first valve seat body is provided with a locked portion.
The second valve body is provided with a locking portion that is locked to the locked portion.
When the first valve seat body is fitted to the second valve seat body, the first valve seat body and the second valve are locked so that the locked portion is locked to the locked portion. It is composed of the seat body,
When the first valve seat main body rotates by a predetermined angle in the one direction while the locked portion is locked to the locked portion, the guided portion is guided by the guide portion, and the first valve seat main body is guided by the guide portion. The liquid fuel combustor according to claim 7 or 8, wherein the second valve body moves in a direction in which the valve member of 2 moves away from the second valve seat. The locking portion is a protruding portion extending from the end of the second valve body in a direction parallel to the center line and away from the liquid fuel tank.
The locked portion has a thickness dimension shorter than the length dimension of the protruding portion and is provided in the first valve seat, and the locked portion has a through hole into which the protruding portion is inserted. It is provided,
When the first valve seat main body and the second valve seat main body are only fitted, the protruding portion does not push the first valve body, and the first valve seat main body is not pushed. Rotates a predetermined angle in the one direction, and the second valve body moves in a direction in which the second valve member separates from the second valve seat, so that the protruding portion becomes the first valve body. The liquid fuel combustor according to claim 9, wherein the first valve member separates from the first valve seat by pressing. The liquid fuel combustor according to any one of claims 1 to 10, wherein the cartridge tank is a metal cartridge tank. The liquid fuel combustor according to any one of claims 1 to 10, wherein the cartridge tank is a resin cartridge tank.

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