A temperature-controlled steam valve and a rice cooker

Abstract

The present invention discloses a temperature-controlled steam valve and a rice cooker, wherein the temperature-controlled steam valve comprises: a valve body device, the valve body device is provided with an installation channel; a valve cover, the valve cover is inserted into the installation channel, an exhaust channel is provided between the outer wall of the valve cover and the inner wall of the installation channel, and the valve cover has a sealing portion located at the outlet side of the exhaust channel; a temperature-controlled driving component, the temperature-controlled driving component comprises a first liquid storage shell and a deformation member, the first liquid storage shell is provided with an expansion port, the deformation member is arranged at the expansion port and is sealed and connected with the first liquid storage shell, one of the first liquid storage shell and the deformation member is connected to the valve body device, and the other of the first liquid storage shell and the deformation member is connected to the valve cover. The above structure increases the heat absorption deformation of the temperature-controlled driving component, thereby increasing the displacement of the valve cover, and a larger exhaust gap is formed between the sealing portion and the outlet edge of the exhaust channel, so that the steam in the rice cooker can be discharged quickly and in large quantities.

Description

Technical Field

[0001] The invention relates to the technical field of cooking appliances, and in particular to a temperature-controlled steam valve and a rice cooker. Background Art

[0002] A steam valve is usually provided on a rice cooker to discharge excess steam in the rice cooker when cooking food. Some steam valves adopt a temperature control structure, that is, a valve cover and a temperature-sensitive deformation-sensitive temperature control drive component are provided on the steam valve, the valve cover is inserted into the steam valve, an exhaust channel is formed between the valve cover and the steam valve, the valve cover closes the exhaust channel, and the temperature control drive component cooperates with the valve cover. The temperature control drive component deforms in a high-temperature environment in contact with steam, so that the temperature control drive component pushes the valve cover to move and opens the exhaust channel, thereby achieving the purpose of quickly discharging steam. The temperature control drive component usually adopts a bimetallic strip, which is in direct contact with steam. After absorbing the heat of the steam, the bimetallic strip deforms and pushes the valve cover to move. However, the bimetallic strip only deforms by absorbing heat by itself, and its heat absorption deformation is small. The displacement of the valve cover is limited, and the flow area for steam outflow is small, which affects the flow of steam and makes it difficult to discharge steam quickly.

[0003] In addition, some bimetallic strips will rust after long-term contact with moisture, causing the temperature control drive components to be unable to deform smoothly in a high temperature environment or to deform very little. The metal rust produced by the rust can easily enter the food, causing hygiene problems. Summary of the invention

[0004] The object of the present invention is to provide a temperature-controlled steam valve capable of increasing the heat absorption deformation of a temperature-controlled driving component.

[0005] The present invention also provides a rice cooker having the temperature control steam valve

[0006] According to a first aspect of the present invention, there is provided a temperature-controlled steam valve, comprising: a valve body device, the valve body device being provided with an installation channel; a valve cover, the valve cover being inserted into the installation channel, an exhaust channel being provided between the outer wall of the valve cover and the inner wall of the installation channel, the valve cover having a sealing portion located on the outlet side of the exhaust channel; a temperature-controlled drive assembly, the temperature-controlled drive assembly comprising a first liquid storage shell and a deformation member, the first liquid storage shell being provided with an expansion port, the deformation member being arranged at the expansion port and being sealedly connected to the first liquid storage shell, one of the first liquid storage shell and the deformation member being connected to the valve body device, and the other of the first liquid storage shell and the deformation member being connected to the valve cover.

[0007] According to the temperature-controlled steam valve, the valve cover can be vertically displaced and / or angularly displaced and / or horizontally displaced relative to the valve body device.

[0008] According to the temperature-controlled steam valve, the installation channel is arranged vertically, the valve cover has an installation cavity open downward, and the first liquid storage shell and the deformation member are located in the installation cavity.

[0009] According to the temperature-controlled steam valve, the installation channel is arranged vertically, and a convex portion and a limit ring are provided in the installation channel. The limit ring and the inner wall of the installation channel are arranged at intervals, the convex portion respectively connects the inner wall of the installation channel and the limit ring, and the valve cover is passed through the limit ring.

[0010] According to the temperature-controlled steam valve, a hook is fixedly provided at the bottom of the valve cover, and the head of the hook is located below the limiting ring.

[0011] According to the temperature-controlled steam valve, the valve body device includes: a first valve seat, which is provided with the installation channel; a second valve seat, which is detachably connected to the first valve seat, and a guide shell is provided at the bottom of the second valve seat, and the guide shell extends upward to the bottom of the valve cover, the bottom of the guide shell is open, and the top of the guide shell has an air inlet, and the air inlet is connected to the inlet side of the exhaust channel.

[0012] According to the temperature-controlled steam valve, the temperature-controlled drive assembly further includes a second liquid storage shell, and a pipeline is connected between the first liquid storage shell and the second liquid storage shell.

[0013] According to the temperature-controlled steam valve, the deformation member is configured as a bimetallic strip.

[0014] According to the temperature-controlled steam valve, the outer surface of the deformable member is covered with an anti-rust layer.

[0015] According to a second aspect of the present invention, there is provided a rice cooker comprising a temperature-controlled steam valve as described above.

[0016] The above solution has at least one of the following beneficial effects:

[0017] Through the above structure, the expandable liquid absorbs heat and expands, driving the deformable member to deform under pressure. The expandable liquid absorbs a large amount of heat, so that the deformation of the expandable liquid is also large, which can drive the deformable member to produce a larger deformation, thereby increasing the heat absorption deformation of the temperature control drive component, thereby increasing the displacement of the valve cover, and forming a large exhaust gap between the sealing part and the outlet edge of the exhaust channel, so that the steam in the rice cooker can be discharged quickly and in large quantities;

[0018] The outer surfaces of the first liquid storage shell and the deformable member can absorb heat and conduct the heat to the expandable liquid. The temperature control drive component has a large heat-absorbing surface, so that the expandable liquid can quickly heat up and expand, and then the temperature control drive component can quickly operate when the temperature rises, thereby improving the responsiveness of the temperature control steam valve to temperature increases.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments;

[0021] Figure 1 It is a structural diagram of the first embodiment of the temperature control steam valve of the present invention;

[0022] Figure 2 for Figure 1 A cross-sectional view of a temperature controlled steam valve shown in;

[0023] Figure 3 for Figure 1 An exploded view of the temperature controlled steam valve shown in;

[0024] Figure 4 for Figure 3 A structural diagram of the first valve seat shown in ;

[0025] Figure 5 for Figure 3 The structural diagram of the valve seat shell shown in;

[0026] Figure 6 It is a schematic diagram of the cooperation between the valve cover and the valve body device in the second embodiment of the temperature control steam valve of the present invention;

[0027] Figure 7 It is a schematic diagram of the cooperation between the valve cover and the valve body device in the third embodiment of the temperature control steam valve of the present invention;

[0028] Figure 8 This is a schematic diagram of the cooperation between the valve cover and the valve body device in the fourth embodiment of the temperature control steam valve of the present invention;

[0029] Fig. 9 It is a schematic diagram of the cooperation between the valve cover and the valve body device in the fifth embodiment of the temperature control steam valve of the present invention;

[0030] Fig.10 It is a structural diagram of another embodiment of a temperature control drive assembly; DETAILED DESCRIPTION

[0031] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0032] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In the description of the present invention, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0034] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense. Technical personnel in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution. For example, "connected" can be understood as fixed connection, contact abutment, etc. according to the specific content of the technical solution.

[0035] The invention discloses a rice cooker, which comprises a rice cooker body, a top cover and a temperature-controlled steam valve. The top cover is arranged on the rice cooker body, and the temperature-controlled steam valve is arranged on the top cover.

[0036] Reference Figures 1 to 10 A temperature-controlled steam valve includes a valve body device 10, a valve cover 20 and a temperature-controlled driving assembly 30. The valve body device 10 is provided with a mounting channel 111, the valve cover 20 is inserted in the mounting channel 111, the outer wall of the valve cover 20 and the inner wall of the mounting channel 111 are arranged at intervals, so that there is an exhaust channel 112 between the outer wall of the valve cover 20 and the inner wall of the mounting channel 111, and the valve cover 20 has a sealing portion 21, which is located at the outlet side of the exhaust channel 112. The temperature-controlled driving assembly 30 includes a first liquid storage shell 31 and a deformable member 32, the first liquid storage shell 31 is provided with an expansion port, the deformable member 32 is arranged at the expansion port, and the deformable member 32 is sealed and connected to the first liquid storage shell 31, one of the first liquid storage shell 31 and the deformable member 32 is connected to the valve body device 10, and the other of the first liquid storage shell 31 and the deformable member 32 is connected to the valve cover 20. The first liquid storage shell 31 is filled with expandable liquid such as kerosene. When the first liquid storage shell 31 absorbs heat, the expandable liquid can absorb heat and expand. That is, the temperature control drive assembly 30 can deform after being heated, thereby pushing the valve cover 20 to move.

[0037] The temperature-controlled steam valve is installed on the rice cooker. The heat generated by the rice cooker when cooking food heats the food and water, thereby generating steam. When the temperature is low, the amount of steam is small. The sealing part 21 is located at the outlet side of the exhaust channel 112. The sealing part 21 completely closes the outlet of the exhaust channel 112, or there is only a small gap between the sealing part 21 and the outlet edge of the exhaust channel 112, so that a small amount of steam can be discharged. When the temperature is high, the amount of steam is large, and the generated steam flows to the first liquid storage shell 31. The first liquid storage shell 31 absorbs heat when in contact with the high-temperature steam, causing the expandable liquid inside to absorb heat and expand, driving the deformable part 32 to expand under pressure, pushing the valve cover 20 to move, and forming a large exhaust gap between the sealing part 21 and the outlet edge of the exhaust channel 112, so that the steam in the rice cooker can be discharged quickly and in large quantities. The higher the temperature, the greater the deformation of the deformable part, the greater the displacement of the valve cover 20, the larger the area of ​​the exhaust gap, and the faster the steam is discharged.

[0038] Through the above structure, the expandable liquid absorbs heat and expands, driving the deformable member 32 to deform under pressure. The expandable liquid absorbs a large amount of heat, so that the deformation of the expandable liquid is also large, which can drive the deformable member 32 to produce a larger deformation, thereby increasing the displacement of the valve cover 20. A large exhaust gap is formed between the sealing portion 21 and the outlet edge of the exhaust channel 112, so that the steam in the rice cooker can be discharged quickly and in large quantities. In addition, the outer surfaces of the first liquid storage shell 31 and the deformable member 32 can absorb heat and conduct the heat to the expandable liquid. The temperature control drive component 30 has a large heat absorption surface, so that the expandable liquid can quickly heat up and expand, and then the temperature control drive component 30 can quickly operate when the temperature rises, thereby improving the sensitivity of the temperature control steam valve to the temperature rise. In this way, the heat absorption deformation of the temperature control drive component 30 is increased through the above structure, and the temperature control steam valve is sensitive to the temperature rise.

[0039] Reference Figures 1 to 5, a first embodiment of a temperature-controlled steam valve, in which a valve body device 1010 comprises a first valve seat 11, a second valve seat 12 and a valve seat shell 13, the first valve seat 11 is provided with the installation channel 111, the second valve seat 12 is inserted in the first valve seat 11, the outer side of the second valve seat 12 is provided with a first clamping groove 161, the inner side of the first valve seat 11 is provided with a first clamping portion 162, the first clamping portion 162 is clamped in the first clamping groove 161, so that the second valve seat 12 is detachably connected to the first valve seat 11. A guide shell 121 is provided at the bottom of the second valve seat 12, the guide shell 121 extends to the bottom of the valve cover 20, the bottom of the guide shell 121 is open, and the top of the guide shell 121 has an air inlet 122, which is connected to the entrance of the exhaust channel 112. The valve seat shell 13 is sleeved on the first valve seat 11, and a first sealing ring 14 is arranged between the bottom of the valve seat shell 13 and the bottom of the first valve seat 11. A sealing groove arranged around the installation channel 111 is arranged on the top of the first valve seat 11, and a second sealing ring 15 is arranged in the sealing groove. The top of the valve seat shell 13 has a surrounding portion 131, which extends into the sealing groove and abuts against the second sealing ring 15. A second clamping portion 172 is arranged on the inner side of the valve seat shell 13, and a second clamping groove 171 is arranged on the outer side of the first valve seat 11. The second clamping portion 172 is clamped in the second clamping groove 171, so that the valve seat shell 13 and the first valve seat 11 are detachably connected.

[0040] The first card slot 161 is configured to be L-shaped. After the first card-mounting portion 162 is inserted into the first card slot 161, the first valve seat 11 is rotated, so that the second valve seat 12 can be detachably connected to the first valve seat 11. As described above, the valve body device 10 is easy to disassemble and assemble, so as to be disassembled and cleaned. In addition, the steam in the rice cooker flows into the guide shell 121 and flows out through the air inlet 122. The steam flows into the exhaust channel 112 after bypassing the bottom edge of the valve cover 20. The steam can be dispersed through the valve cover 20 so that it enters the exhaust channel 112 more evenly, and the bending property of the steam flow path is increased, which is conducive to bubble breaking and reduces liquid overflowing from the exhaust channel 112.

[0041] In addition, the first clamping groove 161 can be provided on the inner side of the first valve seat 11, and the first clamping portion 162 can be provided on the outer side of the second valve seat 12; the second clamping groove 171 can be provided on the inner side of the valve seat shell 13, and the second clamping portion 172 can be provided on the outer side of the first valve seat 11. Of course, the first valve seat 11 can also be inserted into the second valve seat 12.

[0042] In this embodiment, the valve cover 20 has a mounting cavity 22 which is open downwards, the first liquid storage shell 31 and the deformable member 32 are located in the mounting cavity 22, the first liquid storage shell 31 is connected to the top of the guide shell 121, and the deformable member 32 is connected to the valve cover 20. Specifically, a thrust portion 23 is provided at the top of the mounting cavity 22, and in order to install and position the first liquid storage shell 31 and the deformable member 32, the following structures can be adopted: first, the first liquid storage shell 31 is fixedly connected to the top of the guide shell 121, and the deformable member 32 is in contact with and abuts against the thrust portion 23; second, the first liquid storage shell 31 is in contact with and abuts against the top of the guide shell 121, and the deformable member 32 is fixedly connected to the thrust portion 23.

[0043] In addition, in order to install and position the first liquid storage shell 31 and the deformable member 32 , a slot may be provided on the top of the guide shell 121 , the first liquid storage shell 31 is inserted into the slot, and the deformable member 32 contacts and abuts against the thrust portion 23 .

[0044] Furthermore, in some embodiments, one of the first liquid storage shell 31 and the deformable member 32 may be connected to other positions of the second valve seat 12 or the first valve seat 11 , and the other of the first liquid storage shell 31 and the deformable member 32 may be connected to the valve cover 20 .

[0045] The installation channel 111 is provided with a convex portion 113 and a limiting ring 114, the limiting ring 114 and the inner wall of the installation channel 111 are arranged at intervals, the convex portion 113 connects the inner wall of the installation channel 111 and the limiting ring 114 respectively, and the valve cover 20 is inserted through the limiting ring 114. The above structure can reduce the contact and matching area between the valve cover 20 and the valve body device 10, and reduce the movement resistance of the valve cover 20; the limiting ring 114 is separated from the inner wall of the installation channel 111 by providing the convex portion 113, and when steam needs to be discharged, the steam can be discharged smoothly between the limiting ring 114 and the inner wall of the installation channel 111.

[0046] During the use of the rice cooker, the valve cover 20 will bounce upward when pushed, and there is a situation where the valve cover 20 is bounced out of the installation channel 111. To solve this problem, in this embodiment, a hook 24 is fixedly provided at the bottom of the valve cover 20, and the head of the hook 24 is located below the limit ring 114. When the valve cover 20 moves upward, the head of the hook 24 can stop the limit ring 114, limiting the valve cover 20 from being separated from the installation channel 111. When it needs to be disassembled for cleaning, the hook 24 is moved to make it swing elastically inward, and then the valve cover 20 can be moved upward to be separated from the installation channel 111.

[0047] As described above, in the first embodiment of the temperature-controlled steam valve, the valve cover 20 is vertically displaced to discharge steam.

[0048] Reference Figure 6In the second embodiment of the temperature-controlled steam valve, an obliquely arranged guide groove 115 is provided on the inner wall of the installation channel 111, and a guide portion is provided on the outer wall of the valve cover 20, and the guide portion is inserted into the guide groove 115. When the temperature-controlled drive assembly 30 is deformed by heat and pushes the valve cover 20, the guide portion slides along the guide groove 115, so that the valve cover 20 rotates along the installation channel 111 and moves along the first direction, thereby forming a larger exhaust gap between the sealing portion 21 and the outlet edge of the exhaust channel 112. Among them, the guide groove 115 is arranged obliquely, that is, the guide groove 115 is inclined to the first direction.

[0049] Of course, the guide groove 115 may also be disposed on the outer wall of the valve cover 20 , and the guide portion may be disposed on the inner wall of the installation channel 111 .

[0050] As described above, in the second embodiment of the temperature-controlled steam valve, the valve cover 20 is angularly displaced and vertically displaced to discharge steam. In addition, the mounting channel 111 and the first direction are arranged in the horizontal direction, so that the valve cover 20 can be angularly displaced and horizontally displaced to discharge steam.

[0051] Reference Figure 7 In the third embodiment of the temperature-controlled steam valve, the installation channel 111 is arranged vertically, the valve cover 20 is rotatably connected to the first valve seat 11 via a vertically arranged pivot 26, the deformable member 32 is connected to the valve cover 20, and the first liquid storage shell 31 is connected to the first valve seat 11. When the temperature-controlled driving assembly 30 is deformed and pushes the valve cover 20, the valve cover 20 can be driven to rotate relative to the valve body device 10, that is, the valve cover 20 rotates horizontally around the axis of the pivot 26, thereby forming a larger exhaust gap between the sealing portion 21 and the outlet edge of the exhaust channel 112.

[0052] In some embodiments, the installation channel 111 is arranged horizontally or obliquely, and correspondingly, the pivot 26 is also arranged horizontally or obliquely. In addition, the deformable member 32 can be connected to the first valve seat 11, and the first liquid storage shell 31 can be connected to the valve cover 20.

[0053] As described above, in the third embodiment of the temperature controlled steam valve, the valve cover 20 is angularly displaced to discharge steam.

[0054] Reference Figure 8 In the fourth embodiment of the temperature-controlled steam valve, the deformation member 32 is connected to one side of the valve cover 20, the first liquid storage shell 31 is connected to the first valve seat 11, and the deformation direction of the deformation member 32 is set to be horizontal, that is, the expansion port is located on the lateral side of the first liquid storage shell 31, so that when the temperature-controlled driving component 30 pushes the valve cover 20, the valve cover 20 can be moved laterally, thereby forming a larger exhaust gap between the sealing portion 21 and the outlet edge of the exhaust channel 112.

[0055] In order to ensure that the valve cover 20 can be normally reset, the deformable member 32 is fixedly connected to one side of the valve cover 20, and the first liquid storage shell 31 is fixedly connected to the first valve seat 11. Alternatively, the deformable member 32 is in contact with one side of the valve cover 20, the first liquid storage shell 31 is fixedly connected to the first valve seat 11, and an elastic reset member is provided between the valve cover 20 and the first valve seat 11.

[0056] In some embodiments, the deformable member 32 may be connected to the first valve seat 11 , and the first liquid storage shell 31 may be connected to one side of the valve cover 20 .

[0057] As described above, in the fourth embodiment of the temperature-controlled steam valve, the valve cover 20 is horizontally displaced to discharge steam.

[0058] Reference Fig. 9 In the fifth embodiment of the temperature-controlled steam valve, the first liquid storage shell 31 is connected to the first valve seat 11, the deformable member 32 is connected to the bottom of the valve cover 20, and the position connected to the valve cover 20 deviates from the bottom center of the valve cover 20, and the deformation direction of the deformable member 32 is set to be vertical, that is, the expansion port is set at the top of the first liquid storage shell 31, so that when the temperature-controlled driving component 30 pushes the valve cover 20, one side of the valve cover 20 can be lifted up, thereby forming a larger exhaust gap between the sealing portion 21 and the outlet edge of the exhaust channel 112.

[0059] In some embodiments, the deformable member 32 can be connected to the first valve seat 11, the first liquid storage shell 31 can be connected to the bottom of the valve cover 20, and the position of connection with the valve cover 20 deviates from the bottom center of the valve cover 20, and the deformation direction of the deformable member 32 is set to vertical, that is, the expansion port is set at the top or bottom of the first liquid storage shell 31.

[0060] As described above, in the fifth embodiment of the temperature controlled steam valve, the valve cover 20 is angularly displaced to discharge steam.

[0061] Reference Fig.10 In some embodiments of the present invention, the temperature control drive assembly 30 further includes a second liquid storage shell 33, and a pipe 34 is connected between the first liquid storage shell 31 and the second liquid storage shell 33. The second liquid storage shell 33 is also filled with expandable liquid, and the expandable liquid in the second liquid storage shell 33 expands after absorbing heat, so that the expandable liquid in the second liquid storage shell 33 partially overflows into the first liquid storage shell 31. In addition, the expandable liquid in the first liquid storage shell 31 also expands, which can make the deformation member 32 have a larger deformation amount, the displacement amount of the valve cover 20 is larger, and a larger exhaust gap can be formed between the sealing part 21 and the outlet edge of the exhaust channel 112. In this way, the above structure can make the temperature control drive assembly 30 have a larger expandable liquid storage capacity, and further improve the heat absorption deformation amount of the temperature control drive assembly 30.

[0062] During production and assembly, the second liquid storage shell 33 can be installed on the valve body device 1010 or on the top cover of the rice cooker.

[0063] In some embodiments of the present invention, the deformation member 32 is configured as a bimetallic strip, which can be deformed under the pressure of the expandable liquid, and the bimetallic strip itself can also be deformed after absorbing heat. In this way, the deformation member 32 has a larger deformation displacement, the deformation of the deformation member 32 is more obvious, and a larger exhaust gap can be formed between the sealing portion 21 and the outlet edge of the exhaust channel 112. In this way, the heat absorption deformation of the temperature control drive component 30 is further increased through the above structure.

[0064] For example, the bimetallic sheet includes an annular outer ring sheet and a sealing sheet arranged inside the outer ring sheet, and the outer ring sheet and the sealing sheet have different thermal expansion coefficients. Alternatively, the bimetallic sheet includes a first elastic sheet and a second elastic sheet stacked together, and the first elastic sheet and the second elastic sheet have different thermal expansion coefficients.

[0065] The outer surface of the deformable member 32 is covered with an anti-rust layer to prevent the deformable member 32 from rusting, so that the temperature control steam valve can meet the hygiene requirements. The anti-rust layer can be a rubber layer, or an electroplating layer, or an oxide layer, or a spray layer, etc.

[0066] In summary, when the valve cover 20 moves vertically or tilts on one side under the push of the temperature control drive assembly 30, it can be reset by relying on the gravity of the valve cover 20 itself. When the valve cover 20 moves horizontally or rotates, an elastic reset member can be provided, and the valve cover 20 can be reset by relying on the elastic force of the elastic reset member; or the temperature control drive assembly 30 is fixedly connected to the valve cover 20, and the temperature control drive assembly 30 can pull the valve cover 20 to reset when it cools down and retracts.

[0067] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A temperature controlled steam valve, characterized in that: include: A valve body device, wherein the valve body device is provided with a mounting channel; The valve body device comprises: a first valve seat, wherein the first valve seat is provided with the mounting passage; a second valve seat, the second valve seat being detachably connected to the first valve seat, a guide shell being arranged at the bottom of the second valve seat, the guide shell extending upward to the bottom of the valve cover, the bottom of the guide shell being open, the top of the guide shell being provided with an air inlet, the air inlet being connected to the inlet side of the exhaust passage; A valve cover, the valve cover is inserted into the installation channel, an exhaust channel is provided between an outer wall of the valve cover and an inner wall of the installation channel, and the valve cover has a sealing portion located at an outlet side of the exhaust channel; A temperature-controlled drive component, the temperature-controlled drive component includes a first liquid storage shell and a deformation member, the first liquid storage shell is provided with an expansion port, the deformation member is arranged at the expansion port and is sealedly connected to the first liquid storage shell, one of the first liquid storage shell and the deformation member is connected to the valve body device, and the other of the first liquid storage shell and the deformation member is connected to the valve cover.

2. A temperature-controlled steam valve according to claim 1, characterized in that: The valve cover can be vertically displaced and / or angularly displaced and / or horizontally displaced relative to the valve body device.

3. A temperature-controlled steam valve according to claim 2, characterized in that: The installation channel is arranged vertically, the valve cover has an installation cavity open downward, and the first liquid storage shell and the deformation member are located in the installation cavity.

4. A temperature-controlled steam valve according to claim 2, characterized in that: The installation channel is arranged vertically, and a convex portion and a limiting ring are arranged in the installation channel. The limiting ring and the inner wall of the installation channel are arranged at intervals. The convex portion connects the inner wall of the installation channel and the limiting ring respectively, and the valve cover is penetrated by the limiting ring.

5. A temperature-controlled steam valve according to claim 4, characterized in that: A hook is fixedly arranged at the bottom of the valve cover, and the head of the hook is located below the limiting ring.

6. A temperature-controlled steam valve according to claim 1, characterized in that: The temperature control drive assembly further includes a second liquid storage shell, and a pipeline is connected between the first liquid storage shell and the second liquid storage shell.

7. A temperature-controlled steam valve according to claim 1 or 2 or 3 or 4 or 5 or 6, characterized in that: The deformation member is configured as a bimetallic strip.

8. A temperature-controlled steam valve according to claim 1 or 2 or 3 or 4 or 5 or 6, characterized in that: The outer surface of the deformation member is covered with an anti-rust layer.

9. A rice cooker, characterized in that: It comprises a temperature-controlled steam valve as claimed in any one of claims 1 to 8.

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