Valve device and thermal management system

Abstract

The utility model discloses a valve device and heat management system. Valve device includes: valve seat, valve core subassembly is located in the valve seat, and includes fixed valve piece and dynamic valve piece, and the flow channel mouth is seted up on fixed valve piece, and dynamic valve piece is rotatablely arranged relative to fixed valve piece to be used for adjusting the opening size of flow channel mouth, the side of dynamic valve piece to fixed valve piece is equipped with first contact layer, and the side of fixed valve piece to dynamic valve piece is equipped with second contact layer, and the hardness of first contact layer and second contact layer is different. The utility model provides a valve device and heat management system, and the hardness of first contact layer and second contact layer is different, when two are contacted, one of them can be slightly deformed under the pressure of the other, so that first contact layer and second contact layer can be closely attached together, and the sealing effect between dynamic valve piece and fixed valve piece is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a valve device and a thermal management system. Background Technology

[0002] The valve device used in the thermal management system includes a moving valve and a fixed valve. The fixed valve has a flow passage opening, and the moving valve rotates relative to the fixed valve to adjust the opening degree of the flow passage, thereby controlling the flow rate of the fluid that can pass through the valve device.

[0003] In existing technologies, the moving valve component is made of ceramic, which is hard and wear-resistant but brittle and difficult to machine. The stationary valve component is made of stainless steel, requiring precision grinding to ensure a close fit with the ceramic surface of the moving valve component, resulting in high processing costs. Furthermore, the moving and stationary valve components have a "hard-to-hard" contact, making it difficult to achieve an effective seal between them. Utility Model Content

[0004] This utility model provides a valve device and a thermal management system, the purpose of which is to solve the problems in the prior art where the manufacturing cost of moving valves and stationary valves is high and the two cannot be effectively sealed.

[0005] To achieve the above objectives, this utility model provides a valve device, comprising: Valve seat; A valve core assembly is disposed within the valve seat and includes a fixed valve component and a movable valve component. The fixed valve component has a flow channel opening, and the movable valve component is rotatably disposed relative to the fixed valve component to adjust the opening size of the flow channel opening. The moving valve component has a first contact layer on the side facing the fixed valve component, and the fixed valve component has a second contact layer on the side facing the moving valve component. The first contact layer and the second contact layer have different hardnesses.

[0006] In the first and second contact layers of the valve assembly, the one with higher hardness is more wear-resistant, ensuring a sufficient service life for the valve assembly. The one with lower hardness is more susceptible to micro-deformation under stress, ensuring a tight seal. The moving and stationary valve components contact each other through the first and second contact layers. When they come into contact, one of them can undergo micro-deformation under the pressure applied by the other, thus allowing the first and second contact layers to adhere tightly together, ensuring a good seal between the moving and stationary valve components.

[0007] As a further improvement of this utility model, the hardness of the first contact layer is greater than that of the second contact layer.

[0008] The first contact layer is disposed on the moving valve component. As the moving valve component is a part that needs to rotate frequently, placing the first contact layer, which has a relatively high hardness, on the moving valve component can ensure its service life. As a further improvement of this utility model, the first contact layer is a microcrystalline glass layer or a ceramic layer, and the second contact layer is a copper-impregnated layer.

[0009] Both microcrystalline glass and ceramic materials possess high hardness and excellent wear resistance, effectively resisting external friction and maintaining stable surface finish. The copper-infiltrated layer is a metallic composite layer formed by infiltrating copper into the base material. The copper-infiltrated layer has lower hardness (compared to the aforementioned microcrystalline glass and ceramics), but good deformability and wear resistance. When the first contact layer, made of microcrystalline glass or ceramic material, abuts against the copper-infiltrated layer (serving as the second contact layer), the second contact layer undergoes slight deformation, thus tightly adhering to the first contact layer, further ensuring the sealing effect between the moving valve and the stationary valve. As a further improvement of this invention, the moving valve includes a moving valve body, and the first contact layer is disposed on the side of the moving valve body facing the stationary valve. The moving valve body and the first contact layer are made of different materials.

[0010] With the above configuration, the first contact layer, which is the part that needs to contact the stationary valve component, can be made of a material with good wear resistance and high hardness. The moving valve component body does not need to contact the stationary valve component, so the requirements for its material properties are lower, and it can be made of general materials, thus reducing the manufacturing cost of the moving valve component.

[0011] As a further improvement of this utility model, the fixed valve includes a fixed valve body, and the second contact layer is disposed on the side of the fixed valve body facing the moving valve. The fixed valve body and the second contact layer are made of different materials.

[0012] With the above configuration, the second contact layer, which needs to contact the moving valve component, can be made of a material with good wear resistance and a certain degree of elastic deformation capability. The stationary valve component body does not need to contact the moving valve component, so its material performance requirements are lower, and it can be made of ordinary materials, thus reducing the manufacturing cost of the stationary valve component.

[0013] As a further improvement of this utility model, both the moving valve body and the stationary valve body are powder metallurgy parts, and the materials of the first contact layer and the second contact layer are different from the materials of the valve parts in which they are located.

[0014] Powder metallurgy can produce high-precision moving valve bodies and stationary valve bodies without extensive machining, thus reducing the manufacturing cost of both.

[0015] As a further improvement of this utility model, the thickness of the first contact layer is not less than 0.15 mm, and the thickness of the second contact layer is not less than 0.3 mm.

[0016] With the thickness of the first contact layer not less than 0.15 mm and the thickness of the second contact layer not less than 0.3 mm, both the first and second contact layers have sufficient thickness. When they come into contact, they can form a stable bonding interface, ensuring the sealing effect between the moving valve and the stationary valve.

[0017] As a further improvement of this utility model, the thickness of the second contact layer is not less than 3mm.

[0018] With the above configuration, the second contact layer has sufficient thickness. When the first contact layer abuts against the second contact layer, the second contact layer can effectively bear the load. Under long-term contact with the first contact layer, the second contact layer can maintain the integrity of the structure and reliably adhere to the first contact layer.

[0019] As a further improvement of this utility model, the hardness of the second contact layer is greater than that of the first contact layer.

[0020] With the above configuration, when the first contact layer and the second contact layer come into contact, the first contact layer is easily deformed, thus ensuring a tight fit with the second contact layer. This guarantees the sealing between the moving valve and the stationary valve.

[0021] This utility model also provides a thermal management system, including the valve device described above.

[0022] In a thermal management system, valve devices can be used to control and regulate the flow of heat exchange fluid.

[0023] Beneficial effects: The valve device and thermal management system provided by this utility model have a moving valve and a stationary valve in contact through a first contact layer and a second contact layer. The first contact layer and the second contact layer have different hardnesses. When they are in contact, one of them can undergo slight deformation under the pressure applied by the other, so that the first contact layer and the second contact layer can be tightly fitted together, ensuring the sealing effect between the moving valve and the stationary valve. Attached Figure Description

[0024] Figure 1 A cross-sectional view of a valve device provided in an embodiment of this utility model; Figure 2 This is an exploded view of a valve device provided in an embodiment of the present invention; Figure 3 for Figure 1 Cross-sectional views of the moving and stationary valve components; Figure 4 for Figure 3 A schematic diagram showing the moving valve and the stationary valve after they have been separated.

[0025] In the picture: 100. Valve device; 10. Valve seat; 11. Valve core cavity; 111. Inlet; 112. Outlet; 20. Valve core assembly; 21. Fixed valve component; 211. Flow channel; 212. Fixed valve component body; 213. Second contact layer; 22. Moving valve component; 221. Moving valve component body; 222. First contact layer.

[0026] 30. Drive mechanism; 31. Motor; 32. Reducer; 40. Drive components. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any modifications to the mechanism, method, or function made by those skilled in the art based on these embodiments are included within the protection scope of the present invention.

[0028] The terms used herein, such as "up," "down," "left," "right," "front," and "back," indicating spatial relative position, are for illustrative purposes to describe the relationship of one feature relative to another, as shown in the accompanying drawings. It is understood that, depending on the product's placement, these terms may be intended to include different orientations besides those shown in the figures, and should not be construed as limiting the claims. Furthermore, the descriptive term "horizontal" used herein is not entirely equivalent to being perpendicular to the direction of gravity, and allows for a certain angle of inclination.

[0029] like Figure 1-4 As shown, one embodiment of the present invention provides a valve device 100. This valve device 100 can be applied in a thermal management system or other systems that require control of fluid flow.

[0030] The valve device 100 includes a valve seat 10 and a valve core assembly 20. The valve core assembly 20 is disposed within the valve seat 10 and includes a fixed valve element 21 and a movable valve element 22. The fixed valve element 21 has a flow passage 211, and the movable valve element 22 is rotatably disposed relative to the fixed valve element 21. When the movable valve element 22 rotates relative to the fixed valve element 21, it can adjust the opening degree of the flow passage 211, thereby regulating the flow rate of the fluid passing through the valve device 100. The position of the fixed valve element 21 remains fixed relative to the valve seat 10.

[0031] To drive the movable valve element 22 to rotate relative to the stationary valve element 21, the valve device 100 further includes a drive mechanism 30 and a drive element 40. The drive element 40 is connected to the movable valve element 22, and the drive mechanism 30 drives the drive element 40 to rotate, thereby driving the movable valve element 22 to rotate. The drive mechanism 30 includes a motor 31 and a reducer 32. Both the motor 31 and the reducer 32 are connected to the valve seat 10. The reducer 32 drives the motor 31 and the drive element 40, meaning that the motor 31 drives the drive element 40 to rotate through the reducer 32. The reducer 32 increases the output torque of the drive motor 31, enabling the drive motor 31 to drive the movable valve element 22 to rotate.

[0032] The valve seat 10 has a valve core cavity 11, and the valve core assembly 20 is disposed within the valve core cavity 11. The valve core cavity 11 has an inlet 111 and an outlet 112. The fluid entering the valve core cavity 11 from the inlet 111 must pass through the flow passage 211 of the fixed valve element 21 before it can flow out of the valve core cavity 11 from the outlet 112. Therefore, by controlling the opening degree of the flow passage 211, the flow rate of the fluid that can pass through the valve core cavity 11 can be controlled.

[0033] In this embodiment, the moving valve 22 is provided with a first contact layer 222 on the side facing the fixed valve 21, and the fixed valve 21 is provided with a second contact layer 213 on the side facing the moving valve 22. The first contact layer 222 and the second contact layer 213 are located at the junction of the moving valve 22 and the fixed valve 21, and the moving valve 22 and the fixed valve 21 are in contact through the first contact layer 222 and the second contact layer 213.

[0034] The first contact layer 222 and the second contact layer 213 have different hardnesses; that is, one of the first contact layer 222 and the second contact layer 213 has a relatively lower hardness, while the other has a relatively higher hardness.

[0035] In the valve device 100 provided in this embodiment, the one with higher hardness in the first contact layer 222 and the second contact layer 213 is more wear-resistant, ensuring a sufficient service life for the valve device 100. The one with lower hardness is more susceptible to micro-deformation under stress, ensuring a tight fit. The moving valve 22 and the fixed valve 21 are in contact through the first contact layer 222 and the second contact layer 213. When they are in contact, one of them can undergo micro-deformation under the pressure applied by the other, so that the first contact layer 222 and the second contact layer 213 can be tightly fitted together, ensuring a sealing effect between the moving valve 22 and the fixed valve 21.

[0036] In this embodiment, the hardness of the first contact layer 222 is greater than that of the second contact layer 213. The first contact layer 222 is disposed on the moving valve component 22. As the moving valve component 22 is a component that needs to be rotated frequently, disposing of the first contact layer 222 with greater hardness on the moving valve component 22 can ensure the service life of the moving valve component 22.

[0037] In one embodiment of this invention, the first contact layer 222 is a microcrystalline glass layer or a ceramic layer. As the name suggests, the microcrystalline glass layer is made of microcrystalline glass material, while the ceramic layer is made of ceramic material. Both microcrystalline glass material and ceramic have high hardness and excellent wear resistance, effectively resisting external friction and maintaining stable surface finish. The first contact layer 222, made of microcrystalline glass material or ceramic material, is in contact with the second contact layer 213, ensuring the sealing performance between the moving valve 22 and the stationary valve 21.

[0038] The second contact layer 213 is a copper-impregnated layer, which is a metal composite layer formed by infiltrating copper into the base material. The copper-impregnated layer has lower hardness (compared to the aforementioned microcrystalline glass and ceramics) but also possesses good deformability and wear resistance. When the first contact layer 222 abuts against the second contact layer 213, the second contact layer 213 (copper-impregnated layer) can undergo slight deformation, thereby tightly adhering to the first contact layer 222, further ensuring the sealing effect between the moving valve component 22 and the stationary valve component 21. In this embodiment, the moving valve 22 includes a moving valve body 221, and a first contact layer 222 is disposed on the side of the moving valve body 221 facing the fixed valve 21. The moving valve body 221 and the first contact layer 222 are made of different materials.

[0039] With the above configuration, the first contact layer 222, which is the part that needs to contact the stationary valve 21, can be made of a material with good wear resistance and high hardness. The moving valve body 221 does not need to contact the stationary valve 21, so its material properties are less important, and it can be made of general materials. This reduces the manufacturing cost of the moving valve 22. As mentioned above, the first contact layer 222 is a microcrystalline glass layer or a ceramic layer, which can be sintered on the side of the moving valve body 221 facing the stationary valve 21.

[0040] The fixed valve element 21 includes a fixed valve element body 212, and a second contact layer 213 is disposed on the side of the fixed valve element body 212 facing the movable valve element 22. The fixed valve element body 212 and the second contact layer 213 are made of different materials.

[0041] With the above configuration, the second contact layer 213, which needs to contact the moving valve component 22, can be made of a material with good wear resistance and a certain degree of elastic deformation capability. The stationary valve component body 212 does not need to contact the moving valve component 22, so its material properties are less critical, and it can be made of general materials. This reduces the manufacturing cost of the stationary valve component 21. As mentioned above, the second contact layer 213 is a copper-impregnated layer, which can be formed on the side of the stationary valve component body 212 facing the moving valve component 22 through a copper-impregnated process.

[0042] In this embodiment, both the moving valve body 221 and the stationary valve body 212 are powder metallurgy parts, and both are manufactured using powder metallurgy technology. Powder metallurgy technology can produce high-precision moving valve body 221 and stationary valve body 212 without extensive machining, thereby reducing the manufacturing cost of the moving valve body 221 and stationary valve body 212.

[0043] In this embodiment, the thickness of the first contact layer 222 is not less than 0.15 mm, and the thickness of the second contact layer 213 is not less than 0.3 mm. With the first contact layer 222 having a thickness of not less than 0.15 mm and the second contact layer 213 having a thickness of not less than 0.3 mm, both the first contact layer 222 and the second contact layer 213 have sufficient thickness. When they come into contact, a stable bonding interface can be formed, ensuring the sealing effect between the moving valve 22 and the stationary valve 21.

[0044] As a preferred embodiment, the thickness of the second contact layer 213 is not less than 3 mm. Thus, the second contact layer 213 has sufficient thickness, allowing it to effectively withstand loads when the first contact layer 222 abuts against it. Under long-term contact with the first contact layer 222, the second contact layer 213 can maintain structural integrity, ensuring reliable adhesion to the first contact layer 222.

[0045] In another embodiment of this utility model, the following configuration can also be made: the hardness of the second contact layer 213 is greater than the hardness of the first contact layer 222. That is, the relatively harder contact layer can be disposed on the moving valve member 22 or the fixed valve member 21, while the relatively softer contact layer is disposed on the other.

[0046] Thus, when the first contact layer 222 and the second contact layer 213 come into contact, the first contact layer 222 is easily deformed, thereby tightly fitting with the second contact layer 213. This ensures the sealing between the moving valve 22 and the stationary valve 21.

[0047] In this embodiment, the first contact layer 222 is a copper-impregnated layer, and the second contact layer 213 is a microcrystalline glass layer or a ceramic layer. The thickness of the first contact layer 222 is not less than 0.3 mm, more specifically, not less than 3 mm, and the thickness of the second contact layer 213 is not less than 0.15 mm.

[0048] This utility model also provides a thermal management system, which includes the valve device 100 described above. The valve device 100, in the thermal management system, is used to control and regulate the flow of the heat exchange fluid.

[0049] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0050] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A valve device (100), comprising: Valve seat (10); A valve core assembly (20) is disposed in the valve seat (10) and includes a fixed valve element (21) and a movable valve element (22). The fixed valve element (21) has a flow channel (211) and the movable valve element (22) is rotatably disposed relative to the fixed valve element (21) to adjust the opening size of the flow channel (211). The feature is that the moving valve (22) has a first contact layer (222) on the side facing the fixed valve (21), and the fixed valve (21) has a second contact layer (213) on the side facing the moving valve (22), and the first contact layer (222) and the second contact layer (213) have different hardness.

2. The valve device (100) according to claim 1, characterized in that, The hardness of the first contact layer (222) is greater than that of the second contact layer (213).

3. The valve device (100) according to claim 2, characterized in that, The first contact layer (222) is a microcrystalline glass layer or a ceramic layer, and the second contact layer (213) is a copper-impregnated layer.

4. The valve device (100) according to any one of claims 1-3, characterized in that, The moving valve (22) includes a moving valve body (221), and the first contact layer (222) is disposed on the side of the moving valve body (221) facing the fixed valve (21). The moving valve body (221) and the first contact layer (222) are made of different materials.

5. The valve device (100) according to claim 4, characterized in that, The fixed valve (21) includes a fixed valve body (212), and the second contact layer (213) is disposed on the side of the fixed valve body (212) facing the moving valve (22). The fixed valve body (212) and the second contact layer (213) are made of different materials.

6. The valve device (100) according to claim 5, characterized in that, Both the moving valve body (221) and the stationary valve body (212) are powder metallurgy parts.

7. The valve device (100) according to claim 2, characterized in that, The thickness of the first contact layer (222) is not less than 0.15 mm, and the thickness of the second contact layer (213) is not less than 0.3 mm.

8. The valve device (100) according to claim 4, characterized in that, The thickness of the second contact layer (213) is not less than 3 mm.

9. The valve device (100) according to claim 1, characterized in that, The hardness of the second contact layer (213) is greater than that of the first contact layer (222).

10. A thermal management system, characterized in that, Includes the valve device (100) as described in any one of claims 1-9 above.

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