Valve device and integrated assembly

Abstract

This application discloses a valve device and integrated assembly. The valve device includes a valve body, a first valve core, and a second valve core. The valve body has a receiving cavity, and its peripheral wall has at least two interfaces, which are spaced apart circumferentially. At least a portion of the first valve core is located within the receiving cavity. The first valve core has at least one flow channel and at least one arcuate groove. The flow channel connects the two interfaces. At least a portion of the arcuate groove extends through the flow channel, and its circumferential extension direction intersects with the extension direction of the flow channel. The second valve core can drive the first valve core to rotate relative to the valve body. The second valve core includes at least one valve plate, at least a portion of which is inserted into the arcuate groove. The second valve core can also rotate relative to the first valve core to adjust the flow area of ​​the flow channel through the valve plate. This valve device has a flow distribution function and a simple structure.

Description

Technical Field

[0001] This application relates to the field of fluid control technology, and in particular to a valve device and integrated assembly. Background Technology

[0002] Valve devices can be used in thermal management systems to enable switching between different channels. In some applications, valve devices also need to have flow distribution capabilities in specific channels.

[0003] In related technologies, a larger valve body can be designed so that the valve core can rotate within a certain angle when switching to a certain mode to achieve flow regulation in that mode, but the valve device is more complex; alternatively, a dedicated proportional regulating valve can be added to the system, but this increases the cost. Summary of the Invention

[0004] The purpose of this application is to provide a valve device and integrated assembly, which has flow distribution function and simple structure with low cost.

[0005] To solve the above-mentioned technical problems, this application provides a valve device, including a valve body, a first valve core, and a second valve core;

[0006] The valve body has a receiving cavity, and the peripheral wall of the valve body is provided with at least two interfaces, with each interface arranged at intervals along the circumference.

[0007] At least a portion of the first valve core is located within the receiving cavity. The first valve core has at least one flow channel and at least one arcuate groove. The flow channel is capable of connecting the two interfaces. The arcuate groove at least partially extends through the flow channel, and the circumferential extension direction of the arcuate groove intersects the extension direction of the flow channel.

[0008] The second valve core is capable of driving the first valve core to rotate relative to the valve body; the second valve core includes at least one valve plate, at least a portion of which is inserted into the arcuate groove, and the second valve core is also capable of rotating relative to the first valve core to adjust the flow area of ​​the flow channel through the valve plate.

[0009] This application also provides an integrated component, including a flow channel plate and the valve device described above, wherein the valve body is fixedly connected to the flow channel plate or is an integral structure; the flow channel plate includes a flow channel communicating with the interface.

[0010] The valve device provided in this application can be used as an integrated component of a thermal management system. The valve device includes a first valve core and a second valve core. The second valve core can drive the first valve core to rotate, and the second valve core can also rotate relative to the first valve core. When the second valve core rotates relative to the first valve core, its valve plate can rotate along the arc-shaped groove of the first valve core to change the flow area of ​​the flow channel of the first valve core. This valve device, in addition to enabling the switching of the valve device's operating position, can also regulate the flow rate of the flow channel, and has a simple structure and low cost. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of the integrated component provided in this application;

[0012] Figure 2 for Figure 1 An exploded view of the integrated components shown.

[0013] Figure 3 This is a partial cross-sectional view of the integrated component in the valve device section of a specific embodiment;

[0014] Figure 4 This is a partial cross-sectional view of the valve core component of the valve device in a specific embodiment;

[0015] Figure 5 This is an exploded view of the valve core component of the valve device in a specific embodiment;

[0016] Figure 6 for Figure 5 Top view of the first valve core;

[0017] Figure 7 for Figure 5 Schematic diagram of the structure of the second valve core;

[0018] Figure 8 This is a perspective view of the valve core component in a specific embodiment;

[0019] Figure 9 for Figure 1 A schematic diagram of the integrated component shown from another angle;

[0020] Figure 10 for Figure 9 Cross-sectional view along the CC direction;

[0021] Figure 11 for Figure 10 A magnified view of part I in the middle;

[0022] Figure 12 This is a structural diagram of the cover plate, fixing plate, and second valve core assembled in a specific embodiment;

[0023] Figure 13 This is a schematic diagram of the cover plate in a specific embodiment.

[0024] Explanation of reference numerals in the attached figures:

[0025] Valve body 10, receiving cavity 11, interface 12;

[0026] Valve core component 20, first valve core 21, protruding ring portion 211, first limiting portion 212A, second limiting portion 212B, first side wall portion 2121, second side wall portion 2122, third side wall portion 2123, fourth side wall portion 2124, second valve core 22, valve plate 221, first end 1D, second end 2D, first end wall section 2211, second end wall section 2212, first stop portion 222A, second stop portion 222B, first stop wall 2221, second stop wall 2222, third stop wall 2223, fourth stop wall 2224, plug-in portion 223, first limiting surface 224, flow channel 23, first flow channel 231, second channel wall 2312, second flow channel 232, third flow channel 233, arc groove 24;

[0027] Seal 30, cover plate 40, recess 41, annular groove 42, annular groove wall 421, second limiting surface 43, fixing plate 50, spring piece 51, hook 52, stop surface 521.

[0028] Flow channel plate 01, flow channel plate 011. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] In this article, relational terms such as “first” and “second” are used merely to distinguish one component from another that has the same name, and do not necessarily require or imply any such actual relationship or order between these components.

[0031] For ease of understanding, the following explanation will be combined with the integrated components and valve device, and the beneficial effects will not be repeated.

[0032] Valve devices can be applied to thermal management systems, such as vehicle thermal management systems, including those for new energy vehicles.

[0033] The thermal management system includes integrated components, which include valve devices that can distribute the flow of coolant (such as water).

[0034] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of the integrated component provided in this application; Figure 2 for Figure 1 The diagram shows an exploded view of the integrated components.

[0035] The integrated components provided in this implementation plan include a flow channel plate 01 and a valve device. The flow channel plate 01 may have a number of flow channels 011, and the valve device is installed on the flow channel plate 01.

[0036] In this embodiment, the valve device includes a valve body 10 and a valve core component 20. The valve body 10 can be fixedly connected to the flow channel plate 01, for example, by welding or screwing. The valve body 10 can also be integrally formed with the flow channel plate 01, that is, the valve body 10 is directly formed on the flow channel plate 01, or the valve body 10 is directly machined on the flow channel plate 01.

[0037] The valve body 10 has a receiving cavity 11, and the peripheral wall of the valve body 10 is provided with at least two interfaces 12, which are arranged at intervals along the circumference. The flow channel 011 of the flow channel plate 01 is connected to the interface 12.

[0038] The valve core component 20 includes a first valve core 21 and a second valve core 22, and at least a portion of the valve core component 20 is located within the receiving cavity 11 of the valve body 10.

[0039] The circumferential, axial, and radial directions mentioned in this article are all based on the valve device as a reference. Figure 2 As shown, the axial direction of the valve device is indicated by H. The valve body 10 of the valve device has a roughly closed ring structure, and the axial direction H of the valve device is also the axial direction of the valve body 10. The central axis of the valve core component 20 is indicated by S, and the central axis S of the valve core component 20 is parallel to the axial direction H of the valve device. Typically, the central axis of the valve body 10 coincides with the central axis S of the valve core component 20. The radial direction of the valve device refers to the direction perpendicular to the central axis S in a plane perpendicular to the central axis S.

[0040] In this embodiment, the valve device further includes a sealing element 30, which is disposed between the valve body 10 and the valve core component 20. Specifically, the sealing element 30 is disposed between the inner peripheral wall of the valve body 10 and the outer peripheral wall of the first valve core 21, which can achieve sealing between the valve body 10 and the first valve core 21 and reduce internal leakage of the valve device.

[0041] Please refer to this as well. Figures 3 to 5 , Figure 3 This is a partial cross-sectional view of the integrated component in the valve device section of a specific embodiment; Figure 4 This is a partial cross-sectional view of the valve core component of the valve device in a specific embodiment; Figure 5 This is an exploded view of the valve core component of the valve device in a specific embodiment.

[0042] In this embodiment, at least a portion of the first valve core 21 is located within the receiving cavity 11 of the valve body 10. The first valve core 21 has at least one flow channel 23 and at least one arcuate groove 24. The flow channel 23 is capable of connecting two interfaces 12. At least a portion of the arcuate groove 24 extends through the flow channel 23, and the circumferential extension direction of the arcuate groove 24 intersects the extension direction of the flow channel 23.

[0043] The second valve core 22 can drive the first valve core 21 to rotate relative to the valve body 10. The second valve core 22 includes at least one valve plate 221, at least a portion of which is inserted into the arc-shaped groove 24. The second valve core 22 can also rotate relative to the first valve core 21 to adjust the flow area of ​​the flow channel 23 through the valve plate 221.

[0044] Using the above scheme, the second valve core 22 of the valve device can drive the first valve core 21 to rotate relative to the valve body 10. The rotation center line of the first valve core 21 and the second valve core 22 is the central axis of the valve core component 20. When the first valve core 21 rotates, the flow channel 23 of the first valve core 21 can connect to the two interfaces 12 of the valve body 10, thereby connecting the two flow channels 011 of the flow channel plate 01 that are respectively connected to the two interfaces 12. When the first valve core 21 rotates to different working positions, the two interfaces 12 connected to its flow channel 23 are different, so the flow direction of the fluid can be switched by rotating the first valve core 21. The second valve core 22 can also rotate relative to the first valve core 21. When the second valve core 22 drives the first valve core 21 to rotate to a working position, the second valve core 22 can rotate relative to the first valve core 21 to drive the valve plate 221 to rotate along the arc groove 24. Since the arc groove 24 at least partially penetrates the flow channel 23, and the circumferential extension direction of the arc groove 24 intersects the extension direction of the flow channel 23, the valve plate 221 can extend into the flow channel 23 that penetrates the arc groove 24 when it rotates, so as to change the flow area of ​​the flow channel 23 and thus adjust the flow rate of the flow channel 23.

[0045] The flow area of ​​the flow channel 23 can be understood as the cross-sectional area of ​​the flow channel 23 that allows fluid to pass through in the direction perpendicular to the extension direction of the flow channel 23.

[0046] This valve device can adjust the flow rate of the flow channel 23 while enabling the switching of working modes. It has a flow distribution function and is simple in structure and low in cost.

[0047] In application, the first valve core 21 rotates to different working positions, and the two interfaces 12 connected by its flow channel 23 are different, so the flow direction of the fluid can be switched by rotating the first valve core 21.

[0048] In a thermal management system, the operating position of the valve device can be switched as needed to change the direction of fluid flow, allowing the fluid to flow through different flow channels 011 to the components that require thermal management.

[0049] In applications, the number of ports 12 on the valve body 10 and the number of flow channels 23 on the first valve core 21 can be determined according to the requirements of the thermal management system. The number of ports 12 on the valve body 10 can also be increased to accommodate different thermal management systems. In different thermal management system applications, the ports 12 to be used are selected as needed, and the remaining unused ports 12 can be blocked with plugs or other components.

[0050] In practical applications, the first valve core 21 can have one or more flow channels 23. The number of arc-shaped grooves 24 on the first valve core 21 can be the same as or less than the number of flow channels 23. The number of valve plates 221 on the second valve core 22 can be matched with the number of arc-shaped grooves 24. In other words, each flow channel 23 of the first valve core 21 can have a flow regulation function, or only some flow channels 23 can have a flow regulation function, which can be set according to application needs.

[0051] In the illustrated embodiment, the first valve core 21 has three flow channels 23, namely a first flow channel 231, a second flow channel 232, and a third flow channel 233. The first valve core 21 has an arc-shaped groove 24 that mates with the first flow channel 231 and extends through the first flow channel 231. Correspondingly, the second valve core 22 has a valve plate 221, a portion of which is inserted into the arc-shaped groove 24. When the second valve core 22 rotates relative to the first valve core 21, the valve plate 221 can rotate along the arc-shaped groove 24.

[0052] The center of the arc-shaped groove 24 is located on the rotation center line of the first valve core 21 and the second valve core 22, that is, the center of the arc-shaped groove 24 is located on the central axis S of the valve core component 20. The valve plate 221 has an arc-shaped plate structure.

[0053] The circumferential extension direction of the arc-shaped groove 24 intersects the extension direction of the first flow channel 231, and at least a portion of the arc-shaped groove 24 penetrates the first flow channel 231. Thus, when the second valve core 22 rotates relative to the first valve core 21, the valve plate 221 of the second valve core 22 rotates along the arc-shaped groove 24 of the first valve core 21. During rotation, the valve plate 221 can rotate until at least a portion of it is positioned within the first flow channel 231. Figure 3 and Figure 4 As shown, the valve plate 221 occupies the space of the first flow channel 231 and can adjust the flow rate of the fluid flowing through the first flow channel 231.

[0054] Please refer to this as well. Figures 6 to 8 , Figure 6 for Figure 5 Top view of the first valve core; Figure 7for Figure 5 Schematic diagram of the structure of the second valve core; Figure 8 This is a perspective view of the valve core component in a specific embodiment.

[0055] In one implementation, the first valve core 21 includes a limiting portion extending axially toward the second valve core 22, and the second valve core 22 includes a stop portion extending axially toward the first valve core 21. In the circumferential direction, the stop portion can abut against the limiting portion.

[0056] With this configuration, when the second valve core 22 rotates relative to the first valve core 21 in the first direction until its stop portion abuts against the limiting portion of the first valve core 21, it can drive the first valve core 21 to rotate together in the first direction. After driving the first valve core 21 to the working position, the second valve core 22 can rotate relative to the first valve core 21 in the opposite direction to the first direction.

[0057] The relative positions of the limiting part, the stop part, and the arc groove in the circumferential direction can be set according to the application requirements. As long as the second valve core 22 can drive the first valve core 21 to rotate to the working position where its first flow channel 231 connects the two interfaces 12, and in this working position, the second valve core 22 can rotate relative to the first valve core 21, so as to achieve the flow regulation effect of the first flow channel 231 by the rotation of the valve plate 221 in the arc groove 24.

[0058] In a specific implementation, the end face of the first valve core 21 facing the second valve core 22 is provided with a convex ring portion 211 extending axially toward the second valve core 22, and a limiting portion is provided on the end face of the convex ring portion 211. The second valve core 22 includes a plug portion 223, which is inserted into the convex ring portion 211. This arrangement can limit the relative position of the second valve core 22 and the first valve core 21, easily ensure the coaxiality of the second valve core 22 and the first valve core 21, and also help ensure the reliability of the cooperation between the stop portion of the second valve core 22 and the limiting portion of the first valve core 21, as well as the reliability of the cooperation between the valve plate 221 and the arc groove 24.

[0059] like Figure 5 As shown, the arc-shaped groove 24 penetrates the end face of the first valve core 21 toward the second valve core 22 in the axial direction. The opening of the arc-shaped groove 24 faces the second valve core 22. The valve plate 221 of the second valve core 22 can be inserted into the arc-shaped groove 24 through the opening of the arc-shaped groove 24. At the same time, the insertion part 223 of the second valve core 22 can be inserted into the protruding ring part 211 of the first valve core 21.

[0060] In the illustrated embodiment, the first valve core 21 has two limiting portions, referred to as the first limiting portion 212A and the second limiting portion 212B, which are arranged circumferentially at intervals. The first limiting portion 212A includes a first sidewall portion 2121 and a second sidewall portion 2122 arranged circumferentially, and the second limiting portion 212B includes a third sidewall portion 2123 near the first sidewall portion 2121 and a fourth sidewall portion 2124 near the second sidewall portion 2122. The second valve core 22 has two stopping portions, referred to as the first stopping portion 222A and the second stopping portion 222B, respectively. The first stopping portion 222A is located between the first sidewall portion 2121 and the third sidewall portion 2123, and the second stopping portion 222B is located between the second sidewall portion 2122 and the fourth sidewall portion 2124.

[0061] The above settings facilitate limiting the range of rotation angles of the second valve core 22 relative to the first valve core 21, and also help ensure the stability and reliability of the second valve core 22 driving the first valve core 21 to rotate together.

[0062] In actual installation, the first limiting part 212A and the second limiting part 212B are arranged symmetrically in the circumferential direction. The first stop part 222A includes a first stop wall 2221 and a second stop wall 2222 arranged in the circumferential direction, and the second stop part 222B includes a third stop wall 2223 and a fourth stop wall 2224 arranged in the circumferential direction.

[0063] by Figures 5 to 8 As shown, when the second valve core 22 rotates clockwise relative to the first valve core 21, the second stop wall 2222 of the first stop part 222A can abut against the third side wall 2123 of the second limit part 212B, and the third stop wall 2223 of the second stop part 222B can abut against the second side wall 2122 of the first limit part 212A. Thus, the second valve core 22 can drive the first valve core 21 to rotate clockwise together. After rotating to a working position, the second valve core 22 can also rotate counterclockwise relative to the first valve core 21.

[0064] When the second valve core 22 rotates counterclockwise relative to the first valve core 21, it can drive the valve plate 221 to rotate to the position located in the first flow channel 231. The flow rate of the first flow channel 231 can be adjusted by the relative position of the valve plate 221 and the first flow channel 231.

[0065] When the second valve core 22 rotates counterclockwise relative to the first valve core 21 until the first stop wall 2221 abuts against the first side wall 2121 of the first limiting part 212A and the fourth stop wall 2224 abuts against the fourth side wall 2124 of the second limiting part 212B, the second valve core 22 cannot continue to rotate counterclockwise relative to the first valve core 21.

[0066] In a specific implementation, the valve plate 221 of the second valve core 22 can be connected to one of the stop portions. In the illustrated embodiment, the valve plate 221 is connected to the first stop portion 222A, the outer edge of the first stop portion 222A extends radially to the location of the arc groove 24, and the end of the valve plate 221 close to the second valve core 22 in the axial direction is fixedly connected to the first stop portion 222A.

[0067] like Figure 8 As shown, both the first gear part 222A and the second gear part 222B are roughly fan-shaped structures.

[0068] In specific implementation, the two sidewalls of the arc-shaped groove 24 in the circumferential direction are respectively located in the same radial position as the first sidewall portion 2121 of the first limiting portion 212A and the third sidewall portion 2123 of the second limiting portion 212B. In this way, the rotation range of the valve plate 221 in the arc-shaped groove 24 is consistent with the rotation range of the second valve core 22 relative to the first valve core 21, which is beneficial to the setting of the flow regulation range of the first flow channel 231.

[0069] In specific implementation, within the projection plane perpendicular to the axial direction of the valve device, such as Figure 8 As shown, the projection of the arc-shaped groove 24 and the projection of the first flow channel 231 have an arc-shaped overlapping section, that is, the arc-shaped groove 24 completely penetrates the first flow channel 231 in its circumferential extension direction. A part of the projection of the arc-shaped groove 24 is located on one side of the projection of the first flow channel 231, and another part of the projection of the arc-shaped groove 24 is located on the other side of the projection of the first flow channel 231. The projection of the valve plate 221 is arc-shaped, and the arc length of the projection of the valve plate 221 is greater than the length of the aforementioned overlapping section.

[0070] In this way, as the valve plate 221 rotates relative to the first valve core 21 with the second valve core 22, the overlapping section of the first flow channel 231 and the arc groove 24 can be partially occupied by the valve plate 221, or it can be completely occupied by the valve plate 221. Combined with the shape setting of the valve plate 221, the flow rate of the first flow channel 231 can be adjusted between approximately zero flow rate and maximum flow rate (when the valve plate 221 does not occupy the position of the first flow channel 231).

[0071] In specific implementation, the first flow channel 231 includes a first channel wall (not shown in the figure) and a second channel wall 2312 that are axially opposite each other. The opening end of the arc-shaped groove 24 is close to the first channel wall. The valve plate 221 includes a first end 1D and a second end 2D that are axially opposite each other. The valve plate 221 has a first end wall segment 2211 and a second end wall segment 2212 at the second end 2D. The first end wall segment 2211 contacts the second channel wall 2312, and the axial distance between the second end wall segment 2212 and the second channel wall 2312 gradually increases or decreases circumferentially. Figure 3 and Figure 5As shown, when the valve plate 221 rotates along the arc groove 24, after the valve plate 221 extends into the first flow channel 231, its second end wall section 2212 and the second channel wall 2312 of the first flow channel 231 form an approximate triangular gap, which is beneficial to improving the flow regulation accuracy of the first flow channel 231.

[0072] In other embodiments, after the valve plate 221 extends into the first flow channel 231, a notch of other shapes may be formed between it and the channel wall of the first flow channel 231. Alternatively, the arc-shaped groove 24 may partially penetrate the first flow channel 231. Or, the valve plate 221 may only partially extend into the first flow channel 231 during rotation. The relevant structure can be set according to the actual required flow adjustment range or flow adjustment accuracy, and is not limited to what is shown in the figure.

[0073] Please refer to this as well. Figures 9 to 13 , Figure 9 for Figure 1 A schematic diagram of the integrated component shown from another angle; Figure 10 for Figure 9 Cross-sectional view along the CC direction; Figure 11 for Figure 10 A magnified view of part I in the middle; Figure 12 This is a structural diagram of the cover plate, fixing plate, and second valve core assembled in a specific embodiment; Figure 13 This is a schematic diagram of the cover plate in a specific embodiment.

[0074] In this embodiment, the valve device further includes a cover plate 40 and a fixing plate 50. The cover plate 40 is disposed at one end of the first valve core 21 in the axial direction, and the fixing plate 50 is disposed at the end of the cover plate 40 away from the first valve core 21. The cover plate 40 is circumferentially limited and connected to the first valve core 21, and the fixing plate 50 is fixed relative to the valve body 10. One of the cover plate 40 and the fixing plate 50 is provided with a recess 41, and the other is provided with a spring portion 51 that can be deformed in the radial direction. At least a portion of the spring portion 51 can be radially embedded into the recess 41.

[0075] Here, "fixed relative to valve body 10" means that the relative positions of fixed plate 50 and valve body 10 remain unchanged. There is no necessary connection between the two. It can be that fixed plate 50 is fixedly connected to flow channel plate 01 and valve body 10 is fixedly connected to flow channel plate 01, thus determining the relative positions between fixed plate 50 and valve body 10.

[0076] The valve device also includes a drive unit (not shown in the figure), which is connected to the second valve core 22 in a transmission manner, and is used to drive the second valve core 22 to rotate.

[0077] In this way, when the drive unit drives the second valve core 22 to rotate the first valve core 21 relative to the valve body 10, the driving force provided by the drive unit can overcome the elastic force of the spring plate 51, so that the cover plate 40 also rotates with the first valve core 21. After the first valve core 21 rotates to the required working position, the spring plate 51 can be at least partially embedded in the recess 41 in the radial direction to limit the relative position of the first valve core 21 and the valve body 10, ensuring that the first valve core 21 can be kept in the working position, and avoiding the change of position of the first valve core 21 due to external vibration and other influences, which would affect the reliability of the valve device.

[0078] In the illustrated example, the recess 41 is provided on the cover plate 40, and the spring piece 51 is provided on the fixing plate 50.

[0079] In a specific configuration, the cover plate 40 is provided with multiple recesses 41 along the circumference, and the fixing plate 50 is provided with multiple spring pieces 51 along the circumference. In this way, when the cover plate 40 rotates with the first valve core 21 to any working position, the first valve core 21 can be limited by the cooperation between the spring pieces 51 and the recesses 41.

[0080] In a specific implementation, one end of the spring piece 51 is fixedly connected to the fixing plate 50, while the other end can be suspended, which is beneficial for the radial deformation of the spring piece 51.

[0081] In a specific implementation, the outer peripheral wall of the cover plate 40 is provided with an annular groove 42. The annular groove 42 includes an annular groove wall surface 421 facing the first valve core 21. The fixing plate 50 includes a hook portion 52 extending axially toward the first valve core 21. The hook portion 52 includes a stop surface 521 facing away from the first valve core 21, and the stop surface 521 of the hook portion 52 abuts against the annular groove wall surface 421. In this way, the axial position of the cover plate 40 can be restricted by the fixing plate 50. At the same time, the cooperation between the hook portion 52 and the annular groove wall surface 421 can also restrict the radial position of the cover plate 40, which can ensure the reliability of the valve device operation.

[0082] The fixing plate 50 may have multiple hooks 52, which are arranged at intervals along the circumference to provide stable and balanced support for the cover plate 40.

[0083] The second valve core 22 is inserted into the cover plate 40 and the fixing plate 50. The end of the second valve core 22 away from the first valve core 21 extends out of the fixing plate 50 to be connected to the drive unit for transmission. The fixing plate 50 can serve as the mounting base for the drive unit.

[0084] The second valve core 22 is axially and upper limit connected to the cover plate 40. The radial position of the second valve core 22 is defined by the convex ring portion 211 of the first valve core 21, the cover plate 40 and the fixing plate 50. The axial position of the second valve core 22 can be defined by the cover plate 40 to prevent the second valve core 22 from disengaging from the first valve core 21 and to ensure the reliability of their cooperation.

[0085] In a specific implementation, the second valve core 22 may have a first limiting surface 224 facing away from the first valve core 21 or facing the cover plate 40. The cover plate 40 may have a second limiting surface 43 facing the first valve core 21. After the second valve core 22 is inserted into the cover plate 40, the first limiting surface 224 abuts against the second limiting surface 43, thereby preventing the second valve core 22 from moving axially away from the first valve core 21 and detaching from the first valve core 21.

[0086] At the same time, the insertion part 223 of the second valve core 22 is inserted into the convex ring part 211, and the stop part of the second valve core 22 can abut against the convex ring part 211 in the axial direction, thereby restricting the position of the second valve core 22 in the axial direction.

[0087] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A valve device, characterized in that, Includes valve body (10), first valve core (21) and second valve core (22); The valve body (10) has a receiving cavity (11), and the peripheral wall of the valve body (10) is provided with at least two interfaces (12), and each of the interfaces (12) is arranged at intervals along the circumferential direction; At least a portion of the first valve core (21) is located within the receiving cavity (11), and the first valve core (21) has at least one flow channel (23) and at least one arcuate groove (24); the flow channel (23) is capable of connecting the two interfaces (12); the arcuate groove (24) at least partially penetrates the flow channel (23), and the circumferential extension direction of the arcuate groove (24) intersects the extension direction of the flow channel (23); The second valve core (22) can drive the first valve core (21) to rotate relative to the valve body (10); the second valve core (22) includes at least one valve plate (221), at least a portion of which is inserted into the arcuate groove (24); the second valve core (22) can also rotate relative to the first valve core (21) to adjust the flow area of ​​the flow channel (23) through the valve plate (221).

2. The valve device according to claim 1, characterized in that, The first valve core (21) includes a limiting portion extending axially toward the second valve core (22), and the second valve core (22) includes a stop portion extending axially toward the first valve core (21); the stop portion is capable of abutting against the limiting portion in the circumferential direction.

3. The valve device according to claim 2, characterized in that, The first valve core (21) has a convex ring portion (211) extending axially toward the second valve core (22) on its end face facing the second valve core (22), and the limiting portion is provided on the end face of the convex ring portion (211); the second valve core (22) includes a plug portion (223), and the plug portion (223) is inserted into the convex ring portion (211).

4. The valve device according to claim 2, characterized in that, The limiting part is provided in two parts, and the two limiting parts are arranged at intervals along the circumference; one limiting part includes a first side wall part (2121) and a second side wall part (2122) arranged along the circumference, and the other limiting part includes a third side wall part (2123) close to the first side wall part (2121) and a fourth side wall part (2124) close to the second side wall part (2122) in the circumference. The stop section is provided in two parts, one of which is located between the first side wall section (2121) and the third side wall section (2123), and the other of which is located between the second side wall section (2122) and the fourth side wall section (2124). The valve plate (221) is fixedly connected to one of the two baffle portions.

5. The valve device according to any one of claims 1-4, characterized in that, The flow channel (23) includes a first channel wall (231) and a second channel wall (232) that are axially opposite each other. The opening end of the arc groove (24) is close to the first channel wall (231). The valve plate (221) includes a first end (1D) and a second end (2D) that are axially opposite each other. The valve plate (221) has a first end wall segment (2211) and a second end wall segment (2212) at the second end (2D). The first end wall segment (2211) is in contact with the second channel wall (232). The axial distance between the second end wall segment (2212) and the second channel wall (232) gradually increases or decreases along the circumferential direction.

6. The valve device according to any one of claims 1-4, characterized in that, In a projection plane perpendicular to the axial direction of the valve device, the projection of the arc-shaped groove (24) and the projection of the flow channel (23) have an arc-shaped overlapping section. A part of the projection of the arc-shaped groove (24) is located on one side of the projection of the flow channel (23), and another part of the projection of the arc-shaped groove (24) is located on the other side of the projection of the flow channel (23). The projection of the valve plate (221) is arc-shaped, and the arc length of the projection of the valve plate (221) is greater than the arc length of the overlapping section.

7. The valve device according to claims 1-4, characterized in that, The valve device includes a cover plate (40) and a fixing plate (50). The cover plate (40) is located at one axial end of the first valve core (21), and the fixing plate (50) is located at one end of the cover plate (40) away from the first valve core (21). The cover plate (40) is circumferentially limited to the first valve core (21), and the fixing plate (50) is fixed relative to the valve body (10). One of the cover plate (40) and the fixing plate (50) is provided with a recess (41), and the other is provided with a spring portion that can deform radially. At least a portion of the spring portion can be radially embedded into the recess (41).

8. The valve device according to claim 7, characterized in that, The outer peripheral wall of the cover plate (40) is provided with an annular groove (42), the annular groove (42) includes an annular groove wall surface (421) facing the first valve core (21), the fixing plate (50) includes a hook portion extending axially toward the first valve core (21), the hook portion (52) includes a stop surface (521) facing away from the first valve core (21), the stop surface (521) abuts against the annular groove wall surface (421).

9. The valve device according to claim 7, characterized in that, The valve device includes a drive unit, the second valve core (22) is inserted into the cover plate (40) and the fixing plate (50), the end of the second valve core (22) away from the first valve core (21) extends out of the fixing plate (50) to be connected to the drive unit for transmission, the drive unit is used to drive the second valve core (22) to rotate; the second valve core (22) and the cover plate (40) are connected in the axial direction.

10. An integrated component, characterized in that, Includes a flow channel plate (011) and a valve device according to any one of claims 1-9, wherein the valve body (10) is fixedly connected to the flow channel plate (011) or is an integral structure; the flow channel plate (011) includes a flow channel communicating with the interface (12).

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