Valve assembly and fluid control device

Abstract

Disclosed are a valve assembly and a fluid control device. The valve assembly (1) comprises a valve housing assembly (10) and a valve core (20). The valve housing assembly is provided with a valve cavity (101), normally-open ports (103), and selectively-open ports (102). The normally-open ports comprise a first port (P1) and a second port (P2). At least part of the valve core is located in the valve cavity. The valve core can rotate around an axis (X-X). The valve core comprises a first connection channel (251) and a second connection channel (252) which are isolated from each other. The first connection channel comprises a first connection port (21). The second connection channel comprises a second connection port (22). The first connection port and the second connection port are located at the axial ends of the same valve core. In any working mode of the valve assembly, the first connection port is communicated with the first port, the second connection port is communicated with the second port, and the first port and the second port are selectively communicated with different selectively-open ports by rotating the valve core, thereby enabling the valve assembly to be provided with at least two normally-open ports.

Description

Valve Assemblies and Fluid Control Devices

[0001] This application claims priority to two Chinese patent applications, filed with the China Patent Office on June 29, 2023, with application number 2023107875605 and invention name “Valve Assembly and Fluid Control Device”, and filed with the China Patent Office on June 29, 2023, with application number 2023107917716 and invention name “Valve Assembly”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of fluid control, and in particular to a valve assembly and a fluid control device. Background Art

[0003] Typically, valve assemblies are used in fluid control devices to control multiple flow paths in the fluid control devices. When at least two flow paths in the fluid control device are normally open flow paths, that is, fluid needs to pass through the at least two flow paths at all times in any mode, how to design a valve assembly to meet the above-mentioned working mode requirements is an urgent problem that needs to be solved.

[0004] Summary of the Invention

[0005] The purpose of this application is to provide a valve assembly and a fluid control device, which valve assembly can make the first port and the second port as normally open ports, so that the flow path connected to the first port and the flow path connected to the second port in the fluid control device can be used as normally open flow paths, so as to meet the working mode requirements of the fluid control device.

[0006] On the one hand, the technical solution of the present application provides a valve assembly, comprising a valve housing assembly and a valve core, the valve housing assembly having a valve cavity, a normally open port, and a gate port, the normally open port comprising a first port and a second port, at least a portion of the valve core being located in the valve cavity, the valve core being rotatable about an axis, the valve core comprising a first conducting channel and a second conducting channel being isolated from each other, the first conducting channel comprising a first conducting port, the second conducting channel comprising a second conducting port, the first conducting port and the second conducting port being located at the same axial end of the valve core;

[0007] In any working mode of the valve assembly, the first conducting port is communicated with the first port, the second conducting port is communicated with the second port, and the first port and the second port are selectively communicated with different selection ports by rotating the valve core.

[0008] According to the valve assembly provided by the technical solution of the present application, the first conduction port and the second conduction port of the valve core are both located at the axial end of the same valve core, and in any working mode of the valve assembly, the first conduction port is connected to the first port, and the second conduction port is connected to the second port, so that when the valve core is rotated to any working position, the connection relationship between the first conduction port and the first port, and the connection relationship between the second conduction port and the second port remain unchanged, so that the first port and the second port become normal ports; further, by rotating the valve core so that the first port and the second port are selectively connected to different selection ports, it is convenient to realize the control function of the valve assembly on multiple flow paths.

[0009] On the other hand, the technical solution of the present application provides a fluid control device, which includes a fluid part and the above-mentioned valve assembly, at least part of the fluid part is located in the valve housing assembly, and the fluid control device has a first flow path and a second flow path, the first flow path or the second flow path is connected to the channel of the fluid part, the first flow path is connected to the first port in the valve assembly, and the second flow path is connected to the second port in the valve assembly.

[0010] According to the fluid control device provided by the technical solution of the present application, at least part of the fluid part is located in the valve housing assembly, and the first flow path opening or the second flow path opening is connected to the channel of the fluid part, which is convenient for improving the integration of the fluid control device, and the first flow path opening is connected to the first port in the valve assembly, and the second flow path opening is connected to the second port in the valve assembly, which is convenient for making the first flow path opening and the second flow path opening as normally open flow paths, so as to meet the working mode requirements of the fluid control device. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] FIG1 is a schematic diagram of the three-dimensional structure of a valve assembly provided in one embodiment of the present application;

[0012] FIG2 is a schematic cross-sectional view of the valve assembly shown in FIG1 at a first position;

[0013] FIG3 is a schematic cross-sectional view of a fluid control device according to an embodiment of the present application;

[0014] FIG4 is an enlarged structural schematic diagram of the fluid control device shown in FIG3 at position Q1;

[0015] FIG5 is a schematic diagram of a three-dimensional structure of the first housing shown in FIG2 at one angle;

[0016] FIG6 is a schematic diagram of the three-dimensional structure of the first housing shown in FIG2 at another angle;

[0017] FIG7 is a schematic diagram of a three-dimensional structure of a valve core shown in FIG2;

[0018] FIG8 is a schematic cross-sectional view of the valve core shown in FIG7 at one position;

[0019] FIG9 is a schematic cross-sectional view of the valve core shown in FIG7 at another position;

[0020] FIG10 is an exploded structural diagram of a combined structure of a valve core and a first sealing assembly provided by an embodiment of the present application;

[0021] FIG11 is an exploded structural diagram of a combined structure of a valve core and a first sealing assembly provided by another embodiment of the present application;

[0022] FIG12 is a schematic diagram of the three-dimensional structure of the first sealing block shown in FIG11 at a first angle;

[0023] FIG13 is a schematic diagram of a three-dimensional structure of the first sealing block shown in FIG12 at a second angle;

[0024] FIG14 is a schematic cross-sectional view of a first sealing block shown in FIG12;

[0025] FIG15 is a schematic diagram of a three-dimensional structure of the first sealing block shown in FIG10 at a first angle;

[0026] FIG16 is a schematic diagram of a three-dimensional structure of the first sealing block shown in FIG10 at a second angle;

[0027] FIG17 is a schematic structural diagram of a valve assembly shown in FIG2 in a first working mode;

[0028] FIG18 is a schematic structural diagram of a valve assembly shown in FIG2 in a second working mode;

[0029] FIG19 is a schematic structural diagram of a valve assembly shown in FIG2 in a third working mode;

[0030] FIG20 is a schematic structural diagram of a valve assembly shown in FIG2 in a fourth working mode;

[0031] FIG21 is a schematic structural diagram of a valve assembly shown in FIG2 in a fifth working mode;

[0032] FIG22 is a schematic structural diagram of a valve assembly shown in FIG2 in a sixth working mode;

[0033] FIG23 is a schematic diagram of a partial three-dimensional structure of a valve assembly provided in another embodiment of the present application;

[0034] FIG24 is a schematic cross-sectional view of a valve core shown in FIG23;

[0035] FIG25 is a schematic diagram of a partial cross-sectional structure of a valve assembly shown in FIG23.

[0036] Description of the drawings:

[0037] 1. Valve assembly; XX, axis; 104, drive chamber; 105, port; C1, communication port; 10, valve housing assembly; 101, valve chamber; 102, gate port; 103, normal port; P1, first port; P2, second port; P3, third port; P4, fourth port; P5, fifth port; 106, accommodating chamber; M1, first port; M2, second port; M3, third port; M4, fourth port; M5, fifth port 11. First end wall portion; 12. Second end wall portion; 13. Side wall portion; 14. First channel portion; 15. Connecting pipe portion; 16. First housing portion; 20. Valve core; 20a. Composite conduction port; S1. First end portion; S2. Second end portion; 21. First conduction port; 22. Second conduction port; 23. Transmission limit portion; 241. Third conduction port; 242. Fourth conduction port; 243. Circumferential wall portion; 251. First conduction port through channel; 252, second conducting channel; 26, partition; 31, drive assembly; 32, transmission shaft; 34, second housing portion; 35, third housing portion; 51, first sealing assembly; 51a, first assembly; 51b, second assembly; 510, first sealing block; 511, main body; 512, rib portion; 512a, transverse rib; 512b, longitudinal rib; 515, recess; 513, first elastic member; 514, limiting portion; 516, abutment portion; 52, second sealing member; 53, third sealing member; 54, fourth sealing assembly; 541, second elastic member; 542, second sealing block; 55, blocking member; 2, fluid control device; 40, fluid member; 411, first flow path; 412, second flow path; 42, pump assembly; 422, stator assembly; 423, rotor assembly; 424, bearing assembly; 425, impeller assembly. DETAILED DESCRIPTION

[0038] The features and exemplary embodiments of various aspects of the present application are described below. In order to make the purpose, technical solutions and advantages of the present application more clearly understood, the present application is further described below in conjunction with the accompanying drawings and specific embodiments. In this document, relational terms such as "first" and "second" are merely used to distinguish one component from another with the same name, and do not necessarily require or imply any actual relationship or order between these components.

[0039] As shown in Figures 1 to 16, an embodiment of the present application provides a valve assembly 1 and a fluid control device 2. The valve assembly 1 and the fluid control device 2 can be used in a vehicle thermal management system, specifically in a coolant circulation system, and can perform flow isolation, conduction, and switching functions for the thermal management system.

[0040] As shown in Figures 1 to 3, the fluid control device 2 provided in the embodiment of the present application includes a fluid part 40 and a valve assembly 1, the valve assembly 1 has a connecting port C1, the connecting port C1 includes a normal port 103 and a selection port 102, the valve assembly 1 includes a valve housing assembly 10 and a valve core 20, at least part of the valve core 20 is located in the valve housing assembly 10, and at least part of the fluid part 40 is located in the same valve housing assembly 10. Compared with setting the valve assembly and the fluid part separately, the fluid control device 2 provided in the embodiment of the present application has a higher degree of integration.

[0041] In the embodiment of the present application, the valve core 20 is rotatable, and the rotation of the valve core 20 allows any of the normally open ports 103 to communicate with at least one of the selected ports 102. Specifically, the normally open ports 103 include a first port P1 and a second port P2. The first port P1 can communicate with at least one of the selected ports 102 through the valve core 20. Similarly, the second port P2 can also communicate with at least one of the selected ports 102 through the valve core 20. Accordingly, the fluid control device 2 has a first flow path 411 and a second flow path 412. The first flow path 411 or the second flow path 412 communicates with the channel of the fluid component 40. For example, in this embodiment, the first flow path 411 communicates with the channel of the fluid component 40, and the first flow path 411 communicates with the first port P1 in the valve assembly 1, and the second flow path 412 communicates with the second port P2 in the valve assembly 1. Through the above arrangement, the first flow path 411 and the second flow path 412 can be used as normally open flow paths, thereby meeting the working mode requirements of the fluid control device 2.

[0042] It should be noted that, in this document, the normal flow port 103 refers to the communication port that is in a connected state in any operating mode; the selection port 102 refers to the selection port 102 that can be in a connected state in some operating modes and in a closed state in other operating modes. The first flow path port 411 can be located on the fluid component 40, or the first flow path port 411 can be located on the connecting block connected between the fluid component 40 and the valve assembly 1, or the first flow path port 411 can overlap with the first port P1. The second flow path port 412 can overlap with the second port P2, or the second flow path port 412 can be located on the connecting pipe portion 15 that is connected to the second port P2.

[0043] As shown in FIG3 , in some embodiments, the fluid component 40 includes a pump assembly 42, and a first flow passage 411 is located in the pump assembly 42. In this case, the first flow passage 411 can serve as an inlet or outlet of the pump assembly 42. Optionally, the first flow passage 411 can be embedded in the interior of the valve core 20. At least a portion of the pump assembly 42 and at least a portion of the valve core 20 are integrated and disposed within the same valve housing assembly 10. By providing the first flow passage 411, which can be embedded in the interior of the valve core 20, the fluid flowing out of the valve core 20 can directly enter the pump assembly 42, thereby improving the integration of the fluid control device 2 and advantageously reducing the flow path of the fluid, thereby reducing flow resistance.

[0044] Specifically, as shown in Figures 5 and 6, the valve housing assembly 10 includes a first housing portion 16, which forms a partial wall portion of the accommodating chamber 106, and the first housing portion 16 forms a partial wall portion of the valve chamber 101, at least a portion of the pump assembly 42 is located in the accommodating chamber 106, and at least a portion of the valve core 20 is located in the valve chamber 101.

[0045] Furthermore, the pump assembly 42 includes a stator assembly 422, a rotor assembly 423, and an impeller assembly 425, and at least a portion of the impeller assembly 425 can be integrated into the valve housing assembly 10. Optionally, at least one of the stator assembly 422 and the rotor assembly 423 can also be integrated into the valve housing assembly 10. As shown in FIG3 , in this embodiment of the present application, the stator assembly 422, the rotor assembly 423, and the impeller assembly 425 of the pump assembly are all integrated into the valve housing assembly 10, thereby improving the integration of the fluid control device 2, reducing the number of parts, and simplifying the structure.

[0046] In order to meet the requirements of various working modes of the fluid control device 2, as shown in Figures 1 to 16, an embodiment of the present application also provides a valve assembly 1, which can be applied to the above-mentioned fluid control device 2.

[0047] Specifically, the valve housing assembly 10 of the valve assembly 1 includes a valve cavity 101, a normal flow port 103, and a selection port 102. The normal flow port 103 includes a first port P1 and a second port P2, which are isolated from each other. At least a portion of the valve core 20 is located in the valve cavity 101, and the valve core 20 is capable of rotating about the axis XX. The valve core 20 includes a first conductive channel 251 and a second conductive channel 252, which are isolated from each other. The first conductive channel 251 includes a first conductive port 21, and the second conductive channel 252 includes a second conductive port 22. The first conductive port 21 and the second conductive port 22 are located at axial ends of the same valve core 20. The first conductive port 21 and the second conductive port 22 are spaced apart along the extension direction of the axis XX, with the first conductive port 21 located at one axial end of the valve core 20 and the second conductive port 22 located at the other axial end of the valve core 20. In any operating mode of the valve assembly 1, the first conduction port 21 is connected to the first port P1, and the second conduction port 22 is connected to the second port P2. The first port P1 and the second port P2 are selectively connected to different selection ports 102 by rotating the valve core 20. This arrangement facilitates the first port P1 and the second port P2 to function as normal flow ports. In this article, the first conduction channel 251 and the second conduction channel 252 are isolated, which means that in the valve core 20, the first conduction channel 251 and the second conduction channel 252 are independent channels, so that in the valve assembly 1, the fluids flowing in the first conduction channel 251 and the second conduction channel 252 do not interact.

[0048] Optionally, at any operating position of the valve core 20, the orthographic projection of the first conducting port 21 along axis XX at least partially overlaps with the orthographic projection of the first port P1 along axis XX, and the orthographic projection of the second conducting port 22 along axis XX at least partially overlaps with the orthographic projection of the second port P2 along axis XX. Herein, the portion where the first conducting port 21 is located includes the first conducting port 21 and the wall defining the first conducting port 21. Similarly, the portion where the first port P1 is located includes the first port P1 and the wall defining the first port P1. The portions where the other ports are located also include the ports and the wall defining the ports.

[0049] In a specific embodiment, the wall defining the first conducting port 21 and the wall defining the second conducting port 22 surround the axis XX. In a specific embodiment, as shown in Figures 7 and 8, an extension of the axis XX passes through the center of the first conducting port 21 and the center of the second conducting port 22. Alternatively, at least one of the first conducting port 21 and the second conducting port 22 is an annular structure, that is, at least one of the inner and outer peripheral walls defining the first conducting port 21 is a circular, arc-shaped, or other closed structure that surrounds the entire circumference of the axis XX, and at least one of the inner and outer peripheral walls defining the second conducting port 22 is a circular, arc-shaped, or other closed structure that surrounds the entire circumference of the axis XX. With this arrangement, at any rotational position of the valve core 20, the positions of at least a portion of the first conducting port 21 and at least a portion of the second conducting port 22 remain unchanged, so that in any operating mode of the valve assembly 1, the first conducting port 21 is connected to the first port P1, and the second conducting port 22 is connected to the second port P2. Through the above arrangement, the connection relationship between the first conducting port 21 and the first port P1 and the connection relationship between the second conducting port 22 and the second port P2 remain unchanged, so that the first port P1 and the second port P2 become normally connected ports, so as to meet the working mode requirements of the fluid control device 2.

[0050] As shown in Figures 7 to 9, in some embodiments, the valve core 20 includes a first end S1, a second end S2, and a circumferential wall portion 243. The first end S1 and the second end S2 are arranged along the extension direction of the axis XX of the valve core 20. At least a portion of the circumferential wall portion 243 connects the first end S1 and the second end S2. The first conducting port 21 is located at the first end S1, and the second conducting port 22 is located at the second end S2. This arrangement facilitates structural simplification and facilitates ensuring that the first conducting port 21 is always connected to the first port P1, and the second conducting port 22 is always connected to the second port P2.

[0051] And / or, as shown in Figures 1 to 6, the valve housing assembly 10 includes a first end wall portion 11, a second end wall portion 12 and a side wall portion 13. The first end wall portion 11 and the second end wall portion 12 are arranged along the axial direction of the valve housing assembly 10. The first end wall portion 11 and the second end wall portion 12 can limit the axial position of the valve core 20. At least a portion of the side wall portion 13 is connected between the first end wall portion 11 and the second end wall portion 12. One of the first end wall portion 11 and the second end wall portion 12 can be an integral structure with the side wall portion 13, and the other can be welded to the side wall portion 13, or the first end wall portion 11 and the second end wall portion 12 can both be welded to the side wall portion 13. The first port P1 is located on the first end wall portion 11, the second port P2 is located on the second end wall portion 12, and the selection port 102 is located in the same height area of ​​the side wall portion 13, that is, the center lines of the selection ports 102 are coplanar, or along the axial direction of the valve housing assembly 10, there is a small height difference between the center lines of the selection ports 102, so that the same valve core 20 can be connected to different selection ports 102 during rotation. The above arrangement facilitates the simplification of the structure of the valve assembly 1. When the valve assembly 1 is used in the fluid control device 2, the first port P1 can be connected to the first flow path port 411 (the pump port of the pump assembly 42), so as to reduce the length of the flow path between the pump assembly 42 and the valve core 20 and reduce the flow resistance.

[0052] In some other embodiments, the first port P1 can be located on the side wall portion 11, and the second port P2 can also be located on the side wall portion 13. In the opposite direction of the extension of the axis XX, the height at which the first port P1 is located is spaced apart from the height at which the first conductive port 21 is located, and the height at which the second port P2 is located is spaced apart from the height at which the second conductive port 22 is located.

[0053] In conjunction with Figures 3 and 8 , to enable rotation of the valve core 20, in some embodiments, the valve core 20 includes a transmission stop 23. The transmission stop 23 is located between the first end S1 and the second end S2 along the extension direction of the axis XX. The valve assembly 1 also includes a transmission shaft 32. The transmission shaft 32 passes through the first port P1 or the second port P2 and is positioned and transmission-connected to the transmission stop 23. For example, in Figures 2 and 3 , the transmission shaft 32 passes through the first port P1 and has an interference fit with the transmission stop 23.

[0054] Optionally, one of the transmission shaft 32 and the transmission limiter 23 includes a protrusion and the other includes a groove, with the protrusion embedded in the groove. To reduce wear on the transmission limiter 23, in some embodiments, the valve assembly 1 may further include a sleeve structure that is sleeved between the outer circumferential wall of the transmission shaft 32 and the inner circumferential wall of the transmission limiter 23.

[0055] Furthermore, when the valve assembly 1 is applied to a fluid control device 2, and the fluid control device 2 includes a pump assembly 42, the drive shaft 32 can be reused as the pump shaft. In this case, the drive shaft 32 comprises a metal material, and the rotor assembly 423 is located on the outer circumference of the drive shaft 32. To enable the rotor assembly 423 of the pump assembly 42 and the valve core 20 of the valve assembly 1 to rotate independently, in some embodiments, as shown in conjunction with Figures 3 and 4, the pump assembly 42 further includes a bearing assembly 424. The bearing assembly 424 is located between the rotor assembly 423 and the drive shaft 32 along the radial direction of the rotor assembly 423.

[0056] In order to limit the axial position of the transmission shaft 32, one end of the transmission shaft 32 can be limited to the driving assembly, and the other end can be limited to the valve core, or the other end of the transmission shaft can pass through the valve core. At this time, the valve housing assembly 10 can have a limiting portion, and the transmission shaft is sleeved in the limiting portion and axially abuts against the limiting portion, or because the transmission shaft 32 can rotate and the transmission shaft 32 is made of metal material, in order to reduce the wear on the valve housing assembly 10, a gasket structure can be provided between the bearing assembly 424 and the limiting portion of the valve housing assembly.

[0057] Please further refer to Figures 2 and 3. In order to realize the rotation of the valve core 20, in some embodiments, the valve assembly 1 also includes a drive assembly 31, at least a portion of the drive assembly 31 is located on one side of the axial direction of the valve core 20, and the drive assembly 31 is connected to the transmission shaft 32. The drive assembly 31 includes a motor or a combination of a motor and a gear, and the transmission shaft 32 is driven by the rotation of the motor. The transmission connection between the two components in this article means that power can be transmitted between the two components. The two components can be an interference fit or an integrated structure, or power transmission can be achieved through a third component.

[0058] Furthermore, the valve assembly 1 further comprises a drive chamber 104, which is fluidically isolated from the valve chamber 101, i.e., fluids between the drive chamber 104 and the valve chamber 101 do not interact. At least a portion of the drive assembly 31 and a portion of the drive shaft 32 are located in the drive chamber 104, with the first port P1 located between the second port P2 and the drive assembly 31. The drive shaft 32 passes through the first port P1 and is positioned and transmission-connected to the transmission limiter 23. For example, the drive shaft 32 and the transmission limiter 23 may be interference-fitted or integrally formed.

[0059] In order to fluidically isolate the drive chamber 104 and the valve chamber 101 from each other, the valve assembly 1 also includes a second shell portion 34 and a third shell portion 35. At least a portion of the second shell portion 34 is located on one side of the axial direction of the first shell portion 16, and the second shell portion 34 and the first shell portion 16 are buckled together and sealed. At least a portion of the third shell portion 35 is located in the space defined by the first shell portion 16 and the second shell portion 34, and the third shell portion 35 is sealed to the inner wall of the first shell portion 16. The second shell portion 34, the first shell portion 16 and the third shell portion 35 can all form partial walls of the drive chamber 104, and the transmission shaft 32 is sealed to the third shell portion 35.

[0060] In a specific implementation, part of the transmission shaft 32 is located on the inner circumference of the third housing portion 35, and a seal is provided between the outer circumference of the transmission shaft 32 and the inner circumference of the third housing portion 35. As shown in FIG2 , when the valve assembly 1 is a separate valve structure, the third housing portion 35 can be separately provided and sealed inside the first housing portion 16. Alternatively, as shown in FIG3 , when the valve assembly 1 is integrated with the pump assembly 42, at least part of the pump assembly 42 is located inside the first housing portion 16, and the stator assembly 422 of the pump assembly 42 can be integrally injection-molded inside the third housing portion 35, and the third housing portion 35 can also be reused as the isolation cover structure of the pump assembly 42. The rotor assembly 423 is located on the inner circumference of the third housing portion 35 to prevent the fluid from entering the stator assembly 422 and damaging the coil assembly in the stator assembly 422.

[0061] As shown in FIG2 , when the valve assembly 1 is a standalone structure, the valve housing assembly 10 may further include a first channel portion 14. The channel in the first channel portion 14 is communicable with the first port P1. Along the axial direction of the valve assembly 1, at least a portion of the first channel portion 14 is located between the drive assembly 31 and the valve core 20. Fluid can flow into or out of the first port P1 through the first channel portion 14. When the valve assembly 1 is integrated with the pump assembly 42, the first flow path 411 is communicated with the first port P1, allowing fluid to flow into the first flow path 411 from the first port P1 or from the conductive channel communicating with the first port P1, and then flow out from the corresponding outlet of the pump assembly 42 under the action of the impeller assembly 425.

[0062] In some embodiments, the valve housing assembly 10 further comprises a port 105, as shown in FIG2 . When the valve assembly 1 is a standalone structure, the port 105 may be exposed on the outer surface of the valve assembly 1. When the valve core 20 and the pump assembly 42 are both integrated into the same valve housing assembly 10, a portion of the ports 105 of the valve assembly 1 may coincide with or be spaced apart from and communicate with the second flow path opening 412, another portion of the ports 105 may coincide with or be spaced apart from and communicate with the first flow path opening 411, and yet another portion of the ports 105 may be disposed in the connecting pipe portion 15, which may be integrally provided with or sealedly connected to the side wall portion 13, or may be integrally provided with or sealedly connected to the end wall portion of the valve housing assembly 10.

[0063] Furthermore, in order to achieve the communication of the gate port 102, in some embodiments, the first conducting channel 251 further includes a third conducting port 241, and the second conducting channel 252 further includes a fourth conducting port 242. The third conducting port 241 and the fourth conducting port 242 are located on the circumferential wall portion 243 of the valve core 20. In the valve core 20, the third conducting port 241 is communicated with the first conducting port 21, and the fourth conducting port 242 is communicated with the second conducting port 22. In this mode, the third conduction port 241 and the fourth conduction port 242 selectively communicate with different gate ports 102, and each of the third conduction port 241 and the fourth conduction port 242 can communicate with one gate port 102 or at least two gate ports 102. The third conduction port 241 and the fourth conduction port 242 are defined as a composite conduction port 20a, which can achieve the function of conducting the gate port 102 and also achieve the proportional adjustment function of the gate port 102. Through the above configuration, the valve assembly 1 can easily achieve the control function of the fluid.

[0064] Specifically, in the valve assembly 1, the communication port C1 includes a first port P1, a second port P2, a third port P3, a fourth port P4, and a fifth port P5, and the port 105 includes a first port M1, a second port M2, a third port M3, a fourth port M4, and a fifth port M5. The first port M1 is connected to the first port P1, the second port M2 is connected to the second port P2, and the third port M3, the fourth port M4, and the fifth port M5 are respectively connected to at least one gate port 102. Specifically, the gate port 102 includes a third port P3, a fourth port P4, and a fifth port P5. The third port P3 is connected to the third port M3, the fourth port P4 is connected to the fourth port M4, and the fifth port P5 is connected to the fifth port M5. Any of the third conducting port 221 and the fourth conducting port 222 can connect any one or two adjacent ones of the third port P3, the fourth port P4, and the fifth port P5.

[0065] To achieve fluid isolation between the first conduction channel 251 and the second conduction channel 252, as shown in Figures 7 to 9, in some embodiments, the valve core 20 further includes a partition 26. One side of the partition 26 in the thickness direction defines a portion of the wall of the first conduction channel 251, and the other side of the partition 26 in the thickness direction defines a portion of the wall of the second conduction channel 252. Optionally, the partition 26 is connected to the circumferential wall 243. Furthermore, the partition 26 can also be connected to the top and bottom walls of the valve core 20, thereby separating the first conduction channel 251 and the second conduction channel 252 into independent spaces.

[0066] In order to reduce the flow resistance of the fluid in the valve core 20 and make the flow resistance of the fluid in the first conducting channel 251 and the second conducting channel 252 the same or similar, in some embodiments, the difference between the conducting cross-sectional area of ​​the first conducting channel 251 and the conducting cross-sectional area of ​​the second conducting channel 252 is within a preset range, or the fluid cross-sectional area of ​​the first conducting channel 251 is equal to the fluid cross-sectional area of ​​the second conducting channel 252.

[0067] In a specific implementation, the partition 26 extends from a side proximate to the first end S1 to a side proximate to the second end S2. In a longitudinal cross-section passing through the axis XX of the valve core 20, the partition 26 is inclined from one radial side of the valve core 20 to the other radial side of the valve core 20. As shown in FIG8 , in a longitudinal cross-section passing through the axis XX of the valve core 20, the main portion of the partition 26 is a slanted plate structure. In other embodiments, the main portion of the partition 26 may have a curved structure, a trapezoidal structure, or a combination thereof, which is not limited in this application.

[0068] To ensure that the valve assembly 1 has improved sealing performance, in some embodiments, the valve assembly 1 includes a first sealing assembly 51, a second sealing member 52, and a third sealing member 53. The first sealing assembly 51 is located in the valve cavity 101, corresponding to the gate port 102, and is positioned between the sidewall portion 13 and the circumferential wall portion 243. The second sealing member 52 is positioned between the first end wall portion 11 and the first end portion S1 of the valve core 20. The third sealing member 53 is positioned between the second end wall portion 12 and the second end portion S2 of the valve core 20. In any operating mode of the valve assembly 1, the first sealing assembly 51 fluidically isolates at least one of the first conducting channel 251 and the second conducting channel 252 from the valve cavity 101. This arrangement can reduce or prevent cross-flow between the gate port 102 connected to the first conducting channel 251 and the gate port 102 connected to the second conducting channel 252.

[0069] As shown in conjunction with Figures 2 and 10 to 17 , in some embodiments, the first sealing assembly 51 includes a first elastic member 513 and a first sealing block 510. Along the radial direction of the valve core 20, the first elastic member 513 abuts between the first sealing block 510 and the sidewall 13 of the valve housing assembly 10. The first elastic member 513 is in communication with the corresponding communication port C1. In this embodiment, one first elastic member 513 is in communication with one gate port 102. The first sealing block 510 abuts between the first elastic member 513 and the valve core 20, and the outer peripheral wall of the first sealing block 510 can abut against the wall of the valve core 20. Along the direction around the axis XX, the wall defining the composite conducting port 20a extends longer than the first elastic member 513, facilitating communication between the composite conducting port 20a and one or at least two adjacent communicating ports. Furthermore, in the embodiment of the present application, the wall defining the composite conducting port 20a extends for a distance less than or equal to the distance extending from the first sealing block 510 along the direction around the axis XX. When the composite conducting port 20a is in communication with the first sealing assembly 51, the portion of the composite conducting port 20a extending beyond the first elastic member 513 can be sealed by the first sealing block 510, thereby reducing or preventing fluid from entering the valve cavity 101 and other communication ports C1 through the portion of the composite conducting port 20a extending beyond the first elastic member 513, thereby improving cross-flow between the communication ports C1 of the valve assembly 1.

[0070] For example, in FIG9 , the composite conducting port 20a of the circumferential wall portion 243 includes a third conducting port 241 and a fourth conducting port 242. When the circumferential wall portion 243 of the valve core 20 includes a spherical surface, if the first sealing assembly structure is improperly configured or if all of the first sealing assembly is configured, such as the second sealing block 542 structure shown in FIG10 , a portion of the fluid flowing out of the first conducting passage enters the valve cavity and then enters the second conducting passage, which can easily cause cross-flow between the third port M3, the fourth port M4, and the fifth port M5. To address this issue, in some embodiments, the circumferential wall portion 243 includes at least two composite conducting ports 20a. In the operating mode of the valve assembly 1, the communication ports C1 connected to different composite conducting ports 20a are fluidically isolated. The first sealing assembly 51 fluidically isolates at least some of the composite conducting ports 20a from the valve cavity 101, thereby reducing the cross-flow between the communication ports C1 of the valve assembly 1 through the valve cavity 101.

[0071] As shown in Figures 10 to 16 , in some embodiments, the first sealing block 510 includes a main body 511 and at least one stopper 514 that are interconnected. The stopper 514 protrudes from a side of the main body 511 facing away from the valve core 20, away from the valve core 20. The first elastic member 513 is sleeved around the outer periphery of the stopper 514. Along the direction around the axis XX, the main body 511 extends a greater distance than the stopper 514. This arrangement facilitates the stopper 514 to limit the position of the first elastic member 513.

[0072] Furthermore, the limiting portion 514 has a through-hole that communicates with the communication port C1, and the main body 511 is capable of covering the composite conduction port 20a. The main body 511 includes an abutment portion 516 that abuts the valve core 20, thereby sealing the composite conduction port 20a. To better abut the main body 511 against the valve core 20, in some embodiments, the main body 511 includes a recess 515 and an abutment portion 516. The recess 515 defines a groove that extends from the surface of the main body 511 toward the valve core 20 into the interior of the main body 511, and the abutment portion 516 surrounds the outer circumference of the recess 515. This arrangement increases the deformation capacity of the main body 511 when a force is applied to the first sealing block 510, allowing the abutment portion 516 to more tightly abut the circumferential wall portion 243 of the valve core 20, thereby better sealing the composite conduction port 20a.

[0073] As shown in FIG15 , in some embodiments, the first sealing assembly 51 includes a first assembly 51a, wherein the first sealing block 510 included in the first assembly 51a includes a stopper 514, and along the direction around the axis XX, the stopper 514 is located at a middle position of the main body 511. Alternatively, as shown in FIG12 to FIG14 , the first sealing assembly 51 includes a second assembly 51b, and the first sealing block 510 included in the second assembly 51b includes at least two stoppers 514, and along the direction around the axis XX, the stoppers 514 are located at the ends of the main body 511.

[0074] In some embodiments, the first sealing block 510 includes at least two limiting portions 514. Along the axis XX, the first sealing block 510 includes a rib 512. The rib 512 is fixedly disposed on the side of the main body 511 facing away from the valve core 20. The rib 512 protrudes from the main body 511 along the side facing away from the valve core 20. At least a portion of the rib 512 is located between two adjacent limiting portions 514, and the rib 512 abuts the valve housing assembly 10. This arrangement facilitates closer abutment of the abutting portion 516 against the circumferential wall 243 of the valve core 20. In this embodiment, at least a portion of the rib 512 corresponds to the position of the recess 515. The abutment of the rib 512 with the valve housing assembly 10 increases the deformation of the main body 511, thereby improving the sealing between the first sealing block 510 and the valve core 20.

[0075] In a specific implementation, the ribs 512 are fixed to the main body 511 through a vulcanization process, ensuring a tighter connection between the ribs 512 and the main body 511. The ribs 512 include at least one of transverse ribs 512a and longitudinal ribs 512b. The transverse ribs 512a extend along the circumference of the first sealing block 510, while the longitudinal ribs 512b extend along the axial direction of the first sealing block 510. For example, the transverse ribs 512a and longitudinal ribs 512b may intersect to form a closed annular structure. This application does not limit the structure of the transverse ribs 512a and longitudinal ribs 512b.

[0076] In some embodiments, the composite conduction port 20a includes a third conduction port 241 and a fourth conduction port 242. The third conduction port 241 and the fourth conduction port 242 are located on the circumferential wall portion 243 of the valve core 20. The third port P3, the fourth port P4, and the fifth port P5 are located on the sidewall portion 13 of the valve housing assembly 10. In any operating mode of the valve assembly 1, the third conduction port 241 and the fourth conduction port 242 connect two or three of the third port P3, the fourth port P4, and the fifth port P5. The first sealing assembly 51 is correspondingly positioned with at least one of the third port P3, the fourth port P4, and the fifth port P5. This arrangement reduces or prevents fluid cross-flow between the third port P3, the fourth port P4, and the fifth port P5.

[0077] In a specific implementation, the first sealing component 51 includes a first component 51a, the first sealing block 510 of the first component 51a includes a limiting portion 514, and the first component 51a is arranged corresponding to one of the third port P3, the fourth port P4 and the fifth port P5; and / or, the first sealing component 51 includes a second component 51b, the first sealing block 510 of the second component 51b includes two limiting portions 514, and the second component 51b is arranged corresponding to two of the third port P3, the fourth port P4 and the fifth port P5.

[0078] Specifically, as shown in Figure 10, the valve assembly 1 may further include a fourth sealing assembly 54, which includes a second elastic member 541 and a second sealing block 542. Along the radial direction of the valve core 20, the second elastic member 541 abuts between the valve housing assembly 10 and the second sealing block 542, and the second sealing block 542 abuts between the second elastic member 541 and the valve core 20. The sealing assembly corresponding to the selection port 102 may include the fourth sealing assembly 54 and the second assembly 51b. In this case, the second assembly 51b can be arranged corresponding to two adjacent ones of the third port P3, the fourth port P4 and the fifth port P5; or the sealing assembly corresponding to the selection port 102 may include the fourth sealing assembly 54 and the first assembly 51a. In this case, the second assembly 51b can be arranged corresponding to one of the third port P3, the fourth port P4 and the fifth port P5; or the sealing assembly corresponding to the selection port 102 may include the first assembly 51a and the second assembly 51b. In this case, the first assembly 51a can be arranged corresponding to the third port P3, and the second assembly 51b can be arranged corresponding to the fourth port P4 and the fifth port P5.

[0079] This article takes the example of a valve assembly including a fourth sealing assembly 54 and a second assembly 51b, wherein the fourth sealing assembly 54 corresponds to the third port P3, and the second assembly 51b corresponds to the fourth port P4 and the fifth port P5. The valve assembly 1 provided in the embodiment of the present application has at least one of the following working modes:

[0080] As shown in Figure 17, in the first working mode of the valve assembly 1, the valve core 20 is located in the first working position, the third port P3 is connected to the second port P2 through the second conducting channel 252, and the fifth port P5 and the fourth port P4 are both connected to the first port P1 through the first conducting channel 251, so that the third port M3 is connected to the second port M2, and the fifth port M5 and the fourth port M4 are both connected to the first port M1.

[0081] As shown in Figure 18, in the second working mode of the valve assembly 1, the valve core 20 is located in the second working position, the third port P3 is connected to the second port P2 through the second conducting channel 252, the fifth port P5 is closed, and the first port P1 is connected to the fourth port P4 through the first conducting channel 251, so that the third port M3 is connected to the second port M2, the sealing part of the valve core 20 closes the fifth port M5, and the first port M1 is connected to the fourth port M4.

[0082] As shown in Figure 19, in the third working mode of the valve assembly 1, the valve core 20 is located in the third working position, the third port P3 is connected to the second port P2 through the second conducting channel 252, the fourth port P4 is closed, and the first port P1 is connected to the fifth port P5 through the first conducting channel 251, so that the third port M3 is connected to the second port M2, the sealing part of the valve core 20 closes the fourth port M4, and the first port M1 is connected to the fifth port M5.

[0083] As shown in Figure 20, in the fourth working mode of the valve assembly 1, the valve core 20 is located in the fourth working position, the third port P3 is connected to the first port P1 through the first conducting channel 251, and the fifth port P5 and the fourth port P4 are both connected to the second port P2 through the second conducting channel 252, so that the third port M3 is connected to the first port M1 through the first conducting channel 251, and the fifth port M5 and the fourth port M4 are both connected to the second port M2 through the second conducting channel 252.

[0084] As shown in Figure 21, in the fifth working mode of the valve assembly 1, the valve core 20 is located in the fifth working position, the third port P3 is connected to the first port P1, the fifth port P5 is closed, the second port P2 and the fourth port P4 are connected, the third port M3 is connected to the first port M1 through the first conducting channel 251, the sealing part of the valve core 20 closes the fifth port M5, and the second port M2 is connected to the fourth port M4 through the second conducting channel 252.

[0085] As shown in Figure 22, in the sixth working mode of the valve assembly 1, the valve core 20 is located in the sixth working position, the third port P3 is connected to the first port P1, the fourth port P4 is closed, and the fifth port P5 is connected to the second port P2, so that the third port M3 is connected to the first port M1 through the first conducting channel 251, the sealing part of the valve core 20 closes the fourth port M4, and the fifth port M5 is connected to the second port M2 through the second conducting channel 252.

[0086] More working modes can be achieved through the rotation of the valve core 20. For example, when the third port P3, the fourth port P4 and the fifth port P5 are evenly arranged on the side wall portion 13 along the circumferential direction of the valve core 20, the valve assembly 1 can also have a seventh working mode, in which the fourth port M4 is connected to the first port M1, and the third port M3 and the fifth port M5 are connected to the second port M2 at the same time; in an eighth working mode, the fourth port M4 is connected to the first port M1, and the fifth port M5 is connected to the second port M2; in a ninth working mode, the fifth port M5 is connected to the first port M1, and the fourth port M4 and the third port M3 are connected to the second port M2 at the same time; in a tenth working mode, the fifth port M5 is connected to the first port M1, and the fourth port M4 and the second port M2 are connected.

[0087] In summary, according to the valve assembly 1 provided in the embodiment of the present application, the first sealing assembly 51 includes a first elastic member 513 and a first sealing block 510, and the first elastic member 513 is correspondingly connected to the connecting port C1. Along the direction around the axis XX, the extension distance of the wall portion limiting the composite connecting port 20a is greater than the extension distance of the first elastic member 513, so that the composite connecting port 20a is connected with one connecting port C1 or at least two adjacent connecting ports C1; further, by setting the extension distance of the wall portion limiting the composite connecting port 20a along the direction around the axis XX to be less than or equal to the extension distance of the first sealing block 510, when the composite connecting port 20a is correspondingly connected to the first sealing assembly 51, the portion of the composite connecting port 20a exceeding the first elastic member 513 can be sealed by the first sealing block 510, reducing or preventing the fluid from entering the valve cavity 101 and entering other connecting ports C1 from the portion of the composite connecting port 20a exceeding the first elastic member 513, thereby improving the cross-flow phenomenon between the connecting ports C1 of the valve assembly 1.

[0088] As shown in Figures 23 to 25, a partial structural diagram of a control valve assembly 1 and a fluid control device 2 provided in another embodiment of the present application is shown. The control valve assembly 1 is similar to the control valve assembly 1 shown in Figures 1 to 22 in terms of the structure of the drive assembly, the structure of the valve housing assembly 10, the structure of the second seal, the structure of the third seal and the installation method, and the working mode of the control valve assembly 1 is at least partially the same as the working mode of the control valve assembly 1 shown in Figures 1 to 22. The difference between the two control valve assemblies 1 is at least that the structure of the valve core assembly 20 and the structure of the sealing assembly are different.

[0089] As shown in Figures 23 and 24, the valve core 20 of the embodiment of the present application includes a first conduction channel 251 and a second conduction channel 252. The first conduction channel 251 has a first conduction port 21, and the second conduction channel 252 has a second conduction port 22. The first conduction port 21 and the second conduction port 22 are located at one end of the axial direction of the valve core 20, and the second conduction port 22 is located at the other end of the axial direction of the valve core. The difference between the valve core 20 of this embodiment and the valve core shown in Figures 1 to 22 is that: the valve core 20 may not include a composite conduction port 20a structure, and the conduction port located on the circumferential wall portion 243 is a circular hole structure. In order to realize the valve assembly 1 operating mode, the number of conducting ports located on the circumferential wall portion 243 can be six, that is, the number of conducting ports in this case is twice the number of the selection ports 102. In this case, the valve assembly 1 includes three fourth sealing assemblies 54 and three blocking members 55. The fourth sealing assemblies 54 correspond one-to-one with the third port P3, the fourth port P4, and the fifth port P5. Along the direction around the axis XX, the fourth sealing assemblies 54 and the blocking members 55 are arranged alternately. The blocking member 55 includes a third elastic member and a blocking block. The structure of the third elastic member is the same or similar to that of the second elastic member. The blocking block abuts between the third elastic member and the valve core 20 and can block and close the conducting ports. Through the above arrangement, the operating mode requirements of the valve assembly 1 can be met and the cross-flow phenomenon between the communication ports C1 can be improved.

[0090] It should be noted that the valve assembly shown in Figures 23 to 25 can be a five-way valve structure, and other multi-way valve structures can be set according to user needs, for example, a six-way valve or a seven-way valve structure can be set. In this case, the blocking member 55 can be replaced with the fourth sealing assembly 54 to achieve other multi-way valve structures, which will not be described in detail herein. The valve assembly herein can include a valve core as shown in the accompanying drawings, and can also include two or more valve cores as shown in the accompanying drawings, wherein at least two valve cores are arranged side by side along a direction intersecting the extension direction of the axis XX, for example, at least two valve cores are arranged along an extension direction perpendicular to the axis XX.

[0091] The present embodiment may also include a method for manufacturing a fluid control device, comprising: injection molding the stator assembly 422 and the third housing portion 35 into an integral structure; installing the valve core 20 from one side of the first housing portion 16 into the valve cavity 101 and sealingly connecting the bottom cover to the first housing portion 16; extending the transmission shaft 32 from the other side of the first housing portion 16 into the valve cavity 101 and transmitting the transmission shaft 32 to the valve core 20; installing the rotor assembly 423 to a portion of the outer circumference of the transmission shaft 32; sleeve the injection molded integral structure of the stator assembly 422 and the third housing portion 35 onto the outer circumference of the rotor assembly 423; and installing the drive assembly 31. The order of the above steps can be set according to user needs.

[0092] It should be noted that the above embodiments are only used to illustrate the present application and are not intended to limit the technical solutions described in the present application. For example, the directional definitions of "front", "back", "left", "right", "up", and "down" are not limited. Although this specification has described the present application with reference to the above embodiments, ordinary technicians in this field should understand that technicians in the relevant technical field can still modify, combine or replace the present application with equivalents, and all technical solutions and improvements that do not depart from the spirit and scope of the present application should be included in the scope of the claims of the present application.

Claims

1. A valve assembly (1), characterized in that: The valve assembly (1) comprises a valve housing assembly (10) and a valve core (20), wherein the valve housing assembly (10) has a valve cavity (101), a normal port (103) and a selection port (102), wherein the normal port (103) comprises a first port (P1) and a second port (P2), wherein at least a portion of the valve core (20) is located in the valve cavity (101), wherein the valve core (20) is capable of rotating around an axis (XX), wherein the valve core (20) comprises a first conducting channel (251) and a second conducting channel (252) which are arranged in isolation, wherein the first conducting channel (251) comprises a first conducting port (21), wherein the second conducting channel (252) comprises a second conducting port (22), wherein the first conducting port (21) and the second conducting port (22) are located at the axial ends of the same valve core (20); In any working mode of the valve assembly (1), the first conduction port (21) is connected to the first port (P1), the second conduction port (22) is connected to the second port (P2), and the first port (P1) and the second port (P2) are selectively connected to different selection ports (102) by rotating the valve core (20).

2. The valve assembly (1) according to claim 1, characterized in that The valve core (20) comprises a first end (S1), a second end (S2) and a circumferential wall portion (243); at least a portion of the circumferential wall portion (243) is connected between the first end (S1) and the second end (S2); the first conduction port (21) is located at the first end (S1); the second conduction port (22) is located at the second end (S2); the first conduction channel (251) further comprises a third conduction port (241); the second conduction channel (252) further comprises a fourth conduction port (242); the third conduction port (241) and the fourth conduction port (242) are located at the circumferential wall portion (243) of the valve core (20); in the valve core (20), the third conduction port (241) is in communication with the first conduction port (21); the fourth conduction port (242) is in communication with the second conduction port (22); In any working mode of the valve assembly (1), the third conduction port (241) and the fourth conduction port (242) are selectively connected to different selection ports (102).

3. The valve assembly (1) according to claim 2, characterized in that The valve core (20) further comprises a partition (26), one side of the partition (26) in the thickness direction defines a portion of the wall of the first conducting channel (251), and the other side of the partition (26) in the thickness direction defines a portion of the wall of the second conducting channel (252); The conduction cross-sectional area of ​​the first conduction channel (251) and the conduction cross-sectional area of ​​the second conduction channel (252) are The difference in the conduction cross-sectional area is within a preset range, or the fluid cross-sectional area of ​​the first conduction channel (251) is equal to the fluid cross-sectional area of ​​the second conduction channel (252).

4. The valve assembly (1) according to claim 3, characterized in that The partition (26) extends from a side close to the first end (S1) to a side close to the second end (S2); In a longitudinal section passing through the axis (XX) of the valve core (20), the partition (26) is inclined from one radial side of the valve core (20) to the other radial side of the valve core (20).

5. The valve assembly (1) according to claim 3, characterized in that The valve core (20) further comprises a transmission limit portion (23), wherein along the extension direction of the axis (XX), the transmission limit portion (23) is located between the first end portion (S1) and the second end portion (S2), and the transmission limit portion (23) is located at the partition portion (26); The valve assembly (1) further comprises a transmission shaft (32), wherein the transmission shaft (32) passes through the first port (P1) or the second port (P2) and is disposed in a limiting manner and in transmission connection with the transmission limiting portion.

6. The valve assembly (1) according to any one of claims 1 to 5, characterized in that: The valve housing assembly (10) comprises a first end wall portion (11), a second end wall portion (12) and a side wall portion (13); the first end wall portion (11) and the second end wall portion (12) are arranged along the axial direction of the valve housing assembly (10); at least a portion of the side wall portion (13) is connected between the first end wall portion (11) and the second end wall portion (12); the first port (P1) is located in the first end wall portion (11); the second port (P2) is located in the second end wall portion (12); and the selection port (102) is located in the same height area of ​​the side wall portion (13).

7. The valve assembly (1) according to claim 6, characterized in that The circumferential wall portion (243) of the valve core (20) includes a spherical surface, and the valve assembly (1) includes a first sealing member (51), a second sealing member (52) and a third sealing member (53), wherein the first sealing member (51) corresponds to the selection port (102), and the first sealing member (51) is located between the side wall portion (13) and the circumferential wall portion (243), the second sealing member (52) is located between the first end wall portion (11) and the first end portion (S1) of the valve core (20), and the third sealing member (53) is located between the second end wall portion (12) and the second end portion (S2) of the valve core (20); In any working mode of the valve assembly (1), the first sealing member (51) seals at least one of the first conducting channel (251) and the second conducting channel (252) with the valve chamber (101). Fluid isolation.

8. The valve assembly (1) according to any one of claims 1 to 5, characterized in that: The valve housing assembly (10) further comprises a port (105), wherein the port (105) is exposed on the outer surface of the valve assembly (1); in the valve assembly (1), the port (105) comprises a first port (M1), a second port (M2), a third port (M3), a fourth port (M4) and a fifth port (M5); the first port (M1) is connected to the first port (P1), the second port (M2) is connected to the second port (P2), the third port (M3), the fourth port (M4) and the fifth port (M5) are respectively connected to at least one of the selection ports (102); the valve assembly (1) has at least one of the following working modes; In a first working mode, the third port (M3) is connected to the second port (M2) through the second conductive channel (252), and the fifth port (M5) and the fourth port (M4) are both connected to the first port (M1) through the first conductive channel (251); In a second working mode, the third port (M3) is connected to the second port (M2) through the second conductive channel (252), the fifth port (M5) is closed, and the first port (M1) is connected to the fourth port (M4) through the first conductive channel (251); a third working mode, the third port (M3) is connected to the second port (M2) through the second conductive channel (252), the fourth port (M4) is closed, and the first port (M1) is connected to the fifth port (M5) through the first conductive channel (251); In a fourth working mode, the third port (M3) is connected to the first port (M1) through the first conductive channel (251), and the fifth port (M5) and the fourth port (M4) are both connected to the second port (M2) through the second conductive channel (252); A fifth working mode, the third port (M3) is connected to the first port (M1), the fifth port (M5) is closed, and the second port (M2) and the fourth port (M4) are connected; In the sixth working mode, the third port (M3) is connected to the first port (M1), the fourth port (M4) is closed, and the fifth port (M5) is connected to the second port (M2).

9. The valve assembly (1) according to any one of claims 1 to 8, characterized in that: The valve assembly (1) further comprises a first sealing assembly (51); the valve housing assembly (10) comprises a valve cavity (101) and a communication port (C1); at least a portion of the valve core (20) is located in the valve cavity (101); the valve core (20) comprises a composite conduction port (20a); the composite conduction port (20a) is capable of communicating with one of the communication ports (C1) or at least two adjacent communication ports (C1); the first sealing assembly (51) is located in the valve cavity (101); ), the first sealing assembly (51) comprises a first elastic member (513) and a first sealing block (510), and along the radial direction of the valve core (20), the first elastic member (513) abuts against the first sealing block (510) and the valve housing assembly (10) respectively, and the hole of the first elastic member (513) is correspondingly connected to the communication port (C1), and the first sealing block (510) abuts against the first elastic member (513) and the valve core (20) respectively; Along the circumferential direction of the valve core (20), the diameter of the composite conducting opening (20a) is greater than the outer diameter of the first elastic member (513), and the diameter of the composite conducting opening (20a) is less than or equal to the outer diameter of the first sealing block (510).

10. The valve assembly (1) according to claim 9, characterized in that The valve core (20) comprises a circumferential wall portion (243), the circumferential wall portion (243) comprises a spherical surface, and the circumferential wall portion (243) has at least two composite conduction ports (20a); In the working mode of the valve assembly (1), the communication ports (C1) that are not connected to the composite conduction ports (20a) are fluidically isolated, and the first sealing assembly (51) fluidically isolates at least part of the composite conduction ports (20a) from the valve chamber (101).

11. The valve assembly (1) according to claim 9, characterized in that The first sealing block (510) comprises a main body (511) and a limiting portion (514) which are connected to each other, the elastic member is sleeved on the outer peripheral side of the limiting portion (514), the main body (511) comprises a recessed portion (515) and an abutting portion (516), the groove defined by the recessed portion (515) extends from the surface of the main body (511) toward the valve core (20) toward the inside of the main body (511), the abutting portion (516) surrounds the outer peripheral side of the recessed portion (515), and the abutting portion (516) abuts against the valve core (20); The valve core (20) is rotatable around an axis (XX), and along the direction around the axis (XX), an extension distance of the main body (511) is greater than an extension distance of the limiting portion (514).

12. The valve assembly (1) according to claim 11, characterized in that The first sealing block (510) comprises a limiting portion (514), and along the direction around the axis (XX), the limiting portion (514) is located at a middle position of the main body (511); Alternatively, the first sealing block (510) comprises at least two limiting portions (514), and along the direction around the axis (XX), the limiting portions (514) are located at the end positions of the main body (511).

13. The valve assembly (1) according to claim 12, characterized in that The first sealing block (510) comprises at least two limiting portions (514), and along the direction around the axis (XX), the first sealing block (510) comprises a rib portion (512), the rib portion (512) is fixedly arranged on a side of the main body (511) away from the valve core (20), and the rib portion (512) protrudes from the main body (511) along the side away from the valve core (20), at least part of the rib portion (512) is located between two adjacent limiting portions (514), and the rib portion (512) abuts against the valve housing assembly (10); The rib portion (512) is fixedly arranged on the main body portion (511) through a vulcanization process, and the rib portion (512) includes at least one of a transverse rib and a longitudinal rib, the transverse rib extends along the circumferential direction of the first sealing block (510), and the longitudinal rib extends along the axial direction of the first sealing block (510).

14. A fluid control device (2), characterized in that: The fluid control device (2) comprises a fluid part (40) and a valve assembly (1) according to any one of claims 1 to 13, wherein at least a portion of the fluid part (40) is located in the valve housing assembly (10), and the fluid control device (2) has a first flow path opening (411) and a second flow path opening (412), wherein the first flow path opening (411) or the second flow path opening (412) is connected to a channel of the fluid part (40), the first flow path opening (411) is connected to the first port (P1) in the valve assembly (1), and the second flow path opening (412) is connected to the second port (P2) in the valve assembly (1).

15. The fluid control device (2) according to claim 14, characterized in that: The fluid component (40) comprises a pump assembly (42), the first flow path opening (411) is located in the pump assembly (42), and the first flow path opening (411) is embedded in the interior of the valve core (20) assembly.

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