Valve assembly and fluid control device

Abstract

The invention discloses a valve assembly and a fluid control device.The valve assembly comprises a valve shell assembly and a valve element, the valve shell assembly is provided with a valve cavity, a normal opening and a gating opening, the normal opening comprises a first opening and a second opening, at least part of the valve element is located in the valve cavity, the valve element can rotate around the axis, and the valve element comprises a first conduction channel and a second conduction channel which are arranged in a separated mode; the first conduction channel comprises a first conduction port, the second conduction channel comprises a second conduction port, and the first conduction port and the second conduction port are located at the axial end of the same valve element; in any working mode of the valve assembly, the first communication port is communicated with the first port, the second communication port is communicated with the second port, and the first port and the second port are selectively communicated with different gating ports through the rotary valve element. This facilitates the valve assembly having at least two normally open ports.

Description

Technical Field

[0001] The invention relates to the field of fluid control, and in particular to a valve assembly and a fluid control device. Background Art

[0002] 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 must always pass through the at least two flow paths in any mode, how to design a valve assembly to meet the above-mentioned working mode requirements is an urgent problem to be solved. Summary of the invention

[0003] The object of the present invention is to provide a valve assembly and a fluid control device, wherein the valve assembly can make a first port and a second port as normally open ports, so as to make the flow path connected to the first port and the flow path connected to the second port in the fluid control device as normally open flow paths, so as to meet the working mode requirements of the fluid control device.

[0004] On the one hand, an embodiment of the present invention provides a valve assembly, the 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 is located in the valve cavity, the valve core can rotate around an axis, the valve core comprises a first conduction channel and a second conduction channel that are isolated and arranged, the first conduction channel comprises a first conduction port, the second conduction channel comprises a second conduction port, the first conduction port and the second conduction port are located at the axial end of the same valve core;

[0005] In any working mode of the valve assembly, the first conduction port is communicated with the first port, the second conduction 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.

[0006] According to the valve assembly provided by the embodiment of the present invention, the first conducting port and the second conducting 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 conducting port is connected to the first port, and the second conducting 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 conducting port and the first port, and the connection relationship between the second conducting port and the second port remain unchanged, so that the first port and the second port become normally connected 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.

[0007] On the other hand, an embodiment of the present invention provides a fluid control device, which includes a fluid part and the above-mentioned valve assembly, at least a portion of the fluid part is located in the valve housing assembly, the fluid control device has a first flow path opening and a second flow path opening, the first flow path opening or the second flow path opening is connected to the channel of the fluid part, 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.

[0008] According to the fluid control device provided by an embodiment of the present invention, at least a portion 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, so as to improve 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, so as to make the first flow path opening and the second flow path opening serve as normally-open flow paths, so as to meet the working mode requirements of the fluid control device. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 is a schematic diagram of the three-dimensional structure of a valve assembly provided by an embodiment of the present invention;

[0010] Figure 2 yes Figure 1 A schematic cross-sectional view of the valve assembly at a first position is shown in FIG.

[0011] Figure 3 is a schematic cross-sectional structural diagram of a fluid control device provided by an embodiment of the present invention;

[0012] Figure 4 yes Figure 3 FIG. 1 is a schematic diagram of an enlarged structure of a fluid control device at Q1;

[0013] Figure 5 yes Figure 2 A schematic diagram of a three-dimensional structure of a first shell at one angle is shown in FIG.

[0014] Figure 6 yes Figure 2 A schematic diagram of a three-dimensional structure of a first shell at another angle is shown in FIG.

[0015] Figure 7 yes Figure 2 A schematic diagram of a three-dimensional structure of a valve core is shown in FIG.

[0016] Figure 8 yes Figure 7 A schematic diagram of a cross-sectional structure of a valve core at one position shown in FIG.

[0017] Fig. 9 yes Figure 7 A schematic diagram of a cross-sectional structure of a valve core at another position shown in FIG.

[0018] Fig.10 It is a schematic diagram of the exploded structure of the combined structure of the valve core and the first sealing assembly provided by an embodiment of the present invention;

[0019] Fig.11 is a schematic diagram of an exploded structure of a combined structure of a valve core and a first sealing assembly provided by another embodiment of the present invention;

[0020] Fig.12 yes Fig.11 A schematic diagram of the three-dimensional structure of the first sealing block at a first angle is shown in FIG.

[0021] Fig.13 yes Fig.12 A schematic diagram of a three-dimensional structure of a first sealing block at a second angle is shown in FIG.

[0022] Fig.14 yes Fig.12 A schematic diagram of a cross-sectional structure of a first sealing block is shown in FIG.

[0023] Fig.15 yes Fig.10 A schematic diagram of a three-dimensional structure of a first sealing block at a first angle is shown in FIG.

[0024] Fig.16 yes Fig.10 A schematic diagram of a three-dimensional structure of a first sealing block at a second angle is shown in FIG.

[0025] Fig.17 yes Figure 2 A schematic structural diagram of a valve assembly in a first working mode is shown in FIG.

[0026] Fig.18 yes Figure 2 A schematic structural diagram of a valve assembly in a second working mode is shown in FIG.

[0027] Fig.19 yes Figure 2 A schematic structural diagram of a valve assembly in a third working mode is shown in FIG.

[0028] Fig. 20 yes Figure 2 A schematic structural diagram of a valve assembly in a fourth working mode is shown in FIG.

[0029] Fig.21 yes Figure 2 A schematic structural diagram of a valve assembly in a fifth working mode is shown in FIG.

[0030] Fig. 22 yes Figure 2 A schematic structural diagram of a valve assembly in a sixth working mode is shown in FIG.

[0031] Fig.23 is a partial three-dimensional structural schematic diagram of a valve assembly provided by another embodiment of the present invention;

[0032] Fig.24 yes Fig.23 A schematic diagram of a cross-sectional structure of a valve core is shown in FIG.

[0033] Fig.25 yes Fig.23 A schematic diagram of a partial cross-sectional structure of a valve assembly is shown in FIG. Description of the drawings:

[0035] 1. Valve assembly; XX, axis; 104, drive chamber; 105, port; C1, communication port; 10, valve housing assembly; 101, valve chamber; 102, selection 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 port; 11, first end wall portion; 12, second end wall portion; 13, side wall portion; 14, first channel portion; 15, pipe connection 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, limit 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

[0036] The features and exemplary embodiments of various aspects of the present invention will be described below. In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. In this article, relational terms such as "first" and "second" are only used to distinguish one component with the same name from another, and do not necessarily require or imply any such actual relationship or order between these components.

[0037] like Figures 1 to 16 As shown, an embodiment of the present invention provides a valve assembly 1 and a fluid control device 1, which 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.

[0038] like Figures 1 to 3 As shown, the fluid control device 2 provided in the embodiment of the present invention 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 a portion of the valve core 20 is located in the valve housing assembly 10, and at least a portion of the fluid part 40 is located in the same valve housing assembly 10. Compared with separately arranging the valve assembly and the fluid part, the fluid control device 2 provided in the embodiment of the present invention has a higher degree of integration.

[0039] In the embodiment of the present invention, the valve core 20 can rotate, and the rotation of the valve core 20 enables any of the normal-passage ports 103 to communicate with at least one of the selected ports 102. Specifically, the normal-passage 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 port 411 and a second flow path port 412. The first flow path port 411 or the second flow path port 412 communicates with the channel of the fluid component 40. For example, in the present embodiment, the first flow path port 411 communicates with the channel of the fluid component 40, and the first flow path port 411 communicates with the first port P1 in the valve assembly 1, and the second flow path port 412 communicates with the second port P2 in the valve assembly 1. Through the above arrangement, it is convenient to make the first flow path port 411 and the second flow path port 412 as a normal-passage flow path, so as to meet the working mode requirements of the fluid control device 2.

[0040] It should be noted that, in this article, the normal port 103 means that the communication port is in a connected state in any working mode; the gate port 102 means that in some working modes, the gate port 102 can be in a connected state, and in other working modes, the gate port 102 can be in a closed state. The first flow path port 411 can be located on the fluid part 40, or the first flow path port 411 can be located on the connecting block connected between the fluid part 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 connected to the second port P2.

[0041] like Figure 3 As shown, in some embodiments, the fluid component 40 includes a pump assembly 42, and the first flow path opening 411 is located in the pump assembly 42. At this time, the first flow path opening 411 can be used as an inlet or outlet of the pump assembly 42. Optionally, the first flow path opening 411 can be embedded in the valve core 20. At least part of the pump assembly 42 and at least part of the valve core 20 are integrated and arranged in the same valve housing assembly 10. By setting the first flow path opening 411, the valve core 20 can be embedded, so that the fluid flowing out of the valve core 20 can directly enter the pump assembly 42, which is convenient for improving the integration of the fluid control device 2, and is beneficial for reducing the flow path of the fluid, which is convenient for reducing the flow resistance.

[0042] Specifically, Figure 5 and Figure 6 As shown, 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.

[0043] Further, 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. Figure 3 As shown, in the embodiment of the present invention, the stator assembly 422, the rotor assembly 423 and the impeller assembly 425 of the pump assembly are all integrated in the valve housing assembly 10, so as to improve the integration of the fluid control device 2, reduce the number of parts, and simplify the structure.

[0044] In order to realize the requirements of various working modes of the fluid control device 2, such as Figures 1 to 16 As shown, an embodiment of the present invention further provides a valve assembly 1 , which can be applied to the above-mentioned fluid control device 2 .

[0045] Specifically, the valve housing assembly 10 of the valve assembly 1 has a valve cavity 101, a normal port 103 and a selection port 102. The normal port 103 includes a first port P1 and a second port P2, the first port P1 and the second port P2 are isolated, at least part of the valve core 20 is located in the valve cavity 101, and the valve core 20 can rotate around the axis XX. The valve core 20 includes a first conduction channel 251 and a second conduction channel 252 that are isolated, the first conduction channel 251 includes a first conduction port 21, the second conduction channel 252 includes a second conduction port 22, and the first conduction port 21 and the second conduction port 22 are located at the axial end of the same valve core 20; the first conduction port 21 and the second conduction port 22 are spaced apart along the extension direction of the axis XX, the first conduction port 21 is located at the axial end of one side of the valve core 20, and the second conduction port 22 is located at the axial end of the other side of the 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. Through the above arrangement, it is convenient to make the first port P1 and the second port P2 as normal ports. In this article, the first conduction channel 251 and the second conduction channel 252 are isolated and arranged, 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.

[0046] Optionally, at any working position of the valve core 20, the orthographic projection of the first conducting port 21 along the axis XX at least partially overlaps with the orthographic projection of the first port P1 along the axis XX, and the orthographic projection of the second conducting port 22 along the axis XX at least partially overlaps with the orthographic projection of the second port P2 along the axis XX. Herein, the first conducting port includes the first conducting port and the wall defining the first conducting port. Similarly, the first port P1 includes the first port P1 and the wall defining the first port P1, and the other ports also include the port and the wall defining the port.

[0047] In a specific implementation, the wall defining the first conducting opening 21 and the wall defining the second conducting opening 22 surround the axis XX. Figure 7 and Figure 8As shown, the extension line of the axis XX passes through the center of the first conduction port 21 and the center of the second conduction port 22. Or at least one of the first conduction port 21 and the second conduction port 22 is an annular structure, that is, at least one of the inner circumferential wall surface and the outer circumferential wall surface of the first conduction port 21 is defined as a circular or arc-shaped or other closed structure surrounding the entire circumference of the axis XX, and at least one of the inner circumferential wall surface and the outer circumferential wall surface of the second conduction port 22 is defined as a circular or arc-shaped or other closed structure surrounding the entire circumference of the axis XX. Through the above arrangement, at any rotation position of the valve core 20, the positions of at least part of the first conduction port 21 and at least part of the second conduction port 22 remain unchanged, so that in any working 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. Through the above arrangement, the connection relationship between the first conduction port 21 and the first port P1 and the connection relationship between the second conduction 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.

[0048] like Figures 7 to 9 As shown, 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 part of the circumferential wall portion 243 connects the first end S1 and the second end S2, the first conduction port 21 is located at the first end S1, and the second conduction port 22 is located at the second end S2. The above arrangement is conducive to simplifying the structure, and it is convenient to make the first conduction port 21 always communicate with the first port P1, and the second conduction port 22 always communicate with the second port P2.

[0049] and / or, if Figures 1 to 6As shown, 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 at the first end wall portion 11, the second port P2 is located at the second end wall portion 12, and the gate port 102 is located at the same height area of ​​the side wall portion 13, that is, the center lines of the gate 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 gate ports 102, so that the same valve core 20 can be connected with different gate ports 102 when rotating. Through the above arrangement, it is convenient to simplify the structure of the valve assembly 1. When the valve assembly 1 is applied to 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 to reduce the flow resistance.

[0050] In some other embodiments, the first port P1 can be located at the side wall portion 11, and the second port P2 can also be located at 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.

[0051] Combination Figure 3 and Figure 8 In order to realize the rotation of the valve core 20, in some embodiments, the valve core 20 includes a transmission limiter 23, and along the extension direction of the axis XX, the transmission limiter 23 is located between the first end S1 and the second end S2. The valve assembly 1 also includes a transmission shaft 32, which passes through the first port P1 or the second port P2 and is limitedly arranged and transmission-connected with the transmission limiter 23. For example Figure 2 and Figure 3 In the embodiment, the transmission shaft 32 passes through the first opening P1 and is interference fit with the transmission limit portion 23 .

[0052] Optionally, one of the transmission shaft 32 and the transmission limiter 23 includes a protrusion, and the other includes a groove, and the protrusion is embedded in the groove. To reduce the wear on the transmission limiter 23, in some embodiments, the valve assembly 1 may further include a sleeve structure, which is sleeved between the outer peripheral wall of the transmission shaft 32 and the inner peripheral wall of the transmission limiter 23.

[0053] Further, when the valve assembly 1 is applied to the fluid control device 2, and the fluid control device 2 includes a pump assembly 42, the transmission shaft 32 can be reused as a pump shaft. In this case, the transmission shaft 32 includes a metal material, and the rotor assembly 423 is located on the outer peripheral side of the transmission shaft 32. In order to make the rotor assembly 423 of the pump assembly 42 and the valve core 20 of the valve assembly 1 rotate independently, in some embodiments, the rotor assembly 423 of the pump assembly 42 and the valve core 20 of the valve assembly 1 are combined. Figure 3 and Figure 4 As shown, the pump assembly 42 further includes a bearing assembly 424 , which is located between the rotor assembly 423 and the transmission shaft 32 along the radial direction of the rotor assembly 423 .

[0054] 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.

[0055] Please read further Figure 2 and Figure 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 part of which 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 in a transmission manner. The drive assembly 31 includes a motor or a combination of a motor and a gear, and the transmission shaft 32 is driven to rotate by the rotation of the motor. In this article, the transmission connection between the two components means that power can be transmitted between the two components, and the two components can be an interference fit or an integrated structure or power transmission can be achieved through a third component.

[0056] Furthermore, the valve assembly 1 further comprises a drive chamber 104, and the drive chamber 104 and the valve chamber 101 are fluidically isolated from each other, that is, the fluids between the drive chamber 104 and the valve chamber 101 do not interact with each other. At least part of the drive assembly 31 and part of the transmission shaft 32 are located in the drive chamber 104, the first port P1 is located between the second port P2 and the drive assembly 31, and the transmission shaft 32 passes through the first port P1 and is limitedly arranged and transmission-connected with the transmission limit portion 23, for example, the transmission shaft 32 and the transmission limit portion 23 are interference-fitted or are an integral structure.

[0057] 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 interlocked 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 wall portions of the drive chamber 104, and the transmission shaft 32 is sealed to the third shell portion 35.

[0058] In a specific implementation, part of the transmission shaft 32 is located on the inner circumference side of the third housing portion 35, and the outer circumferential surface of the transmission shaft 32 and the inner circumferential surface of the third housing portion 35 are sealed by a sealing member. Figure 2 As shown, 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. Figure 3 As shown, when the valve assembly 1 and the pump assembly 42 are integrated, at least part of the pump assembly 42 is located in the first housing portion 16, 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 an isolation cover structure of the pump assembly 42, and 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.

[0059] like Figure 2 As shown, when the valve assembly 1 is a separate 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, and along the axial direction of the valve assembly 1, at least part of the first channel portion 14 is located between the drive assembly 31 and the valve core 20. Through the first channel portion 14, the fluid can flow into the first port P1, or flow out from the first port P1. When the valve assembly 1 is integrated with the pump assembly 42, the first flow path port 411 is communicated with the first port P1, so that the fluid can flow into the first flow path port 411 from the first port P1 or from the conducting channel communicated 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.

[0060] In some embodiments, the valve housing assembly 10 also has a port 105, such as Figure 2As shown, when the valve assembly 1 is an independent structure, the port 105 can be exposed on the outer surface of the valve assembly 1. When the valve core 20 and the pump assembly 42 are integrated into the same valve housing assembly 10, a portion of the ports 105 of the valve assembly 1 can overlap with or be spaced apart and communicated with the second flow path opening 412, another portion of the ports 105 can overlap with or be spaced apart and communicated with the first flow path opening 411, and another portion of the ports 105 can be arranged in the connecting pipe portion 15, and the connecting pipe portion 15 can be integrally arranged or sealed with the side wall portion 13, or the connecting pipe portion can be integrally arranged or sealed with the end wall portion of the valve housing assembly 10.

[0061] Further, in order to achieve the connection of the gate port 102, in some embodiments, the first conduction channel 251 further includes a third conduction port 241, and the second conduction channel 252 further includes a fourth conduction port 242, and the third conduction port 241 and the fourth conduction port 242 are located on the circumferential wall portion 243 of the valve core 20. In the valve core 20, the third conduction port 241 is connected to the first conduction port 21, and the fourth conduction port 242 is connected to the second conduction port 22; in any working state of the valve assembly 1 In the mode, the third conduction port 241 and the fourth conduction port 242 are selectively connected to different gate ports 102, and the third conduction port 241 and the fourth conduction port 242 can be connected to one gate port 102 or at least two gate ports 102, and the third conduction port 241 and the fourth conduction port 242 are defined as a composite conduction port 20a, which can realize the function of conducting the gate port 102 and the proportional adjustment function of the gate port 102. Through the above settings, it is convenient to realize the control function of the valve assembly 1 on the fluid.

[0062] 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, 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, and any one of the third conduction port 221 and the fourth conduction port 222 can connect any one of the third port P3, the fourth port P4, and the fifth port P5, or two adjacent ones.

[0063] To achieve fluid isolation between the first conductive channel 251 and the second conductive channel 252, as Figures 7 to 9As shown, 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, and further, the partition 26 can also be connected to the top wall and the bottom wall of the valve core 20, so as to separate the first conduction channel 251 and the second conduction channel 252 into independent spaces.

[0064] In order to reduce the flow resistance of the fluid flowing 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.

[0065] In a specific implementation, 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. Figure 8 As shown, in the longitudinal section through the axis XX of the valve core 20, the main part of the partition 26 is an inclined plate structure. In some other embodiments, the main part of the partition 26 can be a curved structure or a trapezoidal structure or a combination thereof, which is not limited in the present invention.

[0066] In order to make the valve assembly 1 have better 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, the first sealing assembly 51 corresponds to the gate port 102, and the first sealing assembly 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 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 S2 of the valve core 20. In any working mode of the valve assembly 1, the first sealing assembly 51 isolates at least one of the first conducting channel 251 and the second conducting channel 252 from the fluid of the valve cavity 101. Through the above arrangement, it is easy to reduce or prevent the cross flow between the gate port 102 conducted by the first conducting channel 251 and the gate port 102 conducted by the second conducting channel 252.

[0067] Combination Figure 2 , Figures 10 to 17As shown, in some embodiments, the first sealing assembly 51 includes a first elastic member 513 and a first sealing block 510. In the radial direction of the valve core 20, the first elastic member 513 abuts between the first sealing block 510 and the side wall portion 13 of the valve housing assembly 10, and the first elastic member 513 is correspondingly connected to the communication port C1. In this embodiment, one first elastic member 513 is correspondingly connected to one selection port 102, and the first sealing block 510 abuts between the first elastic member 513 and the valve core 20. Along the direction around the axis XX, the extension distance of the wall portion defining the composite conduction port 20a is greater than the extension distance of the first elastic member 513, so as to facilitate the composite conduction port to communicate with one communication port or at least two adjacent communication ports. Further, in the embodiment of the present invention, along the direction around the axis XX, the extension distance of the wall portion defining the composite conduction port 20a is less than or equal to the extension distance of the first sealing block 510. When the composite conducting port 20a is connected to the first sealing assembly 51, the portion of the composite conducting port 20a that exceeds the first elastic member 513 can be sealed by the first sealing block 510, thereby reducing or preventing the fluid from entering the valve cavity 101 and entering other connecting ports C1 from the portion of the composite conducting port 20a that exceeds the first elastic member 513, thereby improving the cross-flow phenomenon between the connecting ports C1 of the valve assembly 1.

[0068] For example Fig. 9 In the embodiment, the composite conduction port 20a of the circumferential wall portion 243 has a third conduction port 241 and a fourth conduction port 242. When the circumferential wall portion 243 of the valve core 20 includes a spherical surface, if the first sealing component structure is not properly set or all are set to, for example, Fig.10 The structure of the second sealing block 542 shown in the figure makes a part of the fluid flowing out of the first conducting passage enter the valve cavity and then enter the second conducting passage, which is easy to cause cross flow between the third port M3, the fourth port M4 and the fifth port M5. To solve the above problem, in some embodiments, the circumferential wall portion 243 has at least two composite conducting ports 20a. In the working mode of the valve assembly 1, the communication ports C1 connected by different composite conducting ports 20a are fluidically isolated. The first sealing assembly 51 isolates at least part of the composite conducting ports 20a from the valve cavity 101, thereby improving the phenomenon of cross flow between the communication ports C1 of the valve assembly 1 through the valve cavity 101.

[0069] Combination Figures 10 to 16 As shown, in some embodiments, the first sealing block 510 includes a main body 511 and at least one stopper 514 connected to each other, the stopper 514 is protruding from the side of the main body 511 away from the valve core 20 and away from the valve core 20, and the first elastic member 513 is sleeved on the outer peripheral side of the stopper 514; along the direction around the axis XX, the extension distance of the main body 511 is greater than the extension distance of the stopper 514. Through the above arrangement, it is convenient for the stopper 514 to limit the position of the first elastic member 513.

[0070] Further, the limiting portion 514 has a through hole, which is connected to the communication port C1, and the main body 511 can cover the composite conduction port 20a. The main body 511 includes an abutment portion 516, which abuts against the valve core 20, so that the abutment portion 516 can seal the composite conduction port 20a. In order to make the main body 511 better abut against the valve core 20, in some embodiments, the main body 511 includes a recess 515 and an abutment portion 516, and the groove defined by the recess 515 extends from the surface of the main body 511 toward the valve core 20 to the inside of the main body 511, and the abutment portion 516 surrounds the outer peripheral side of the recess 515. Through the above arrangement, when the first sealing block 510 is subjected to a force, it is convenient to increase the deformation capacity of the main body 511, so that the abutment portion 516 can abut more closely against the circumferential wall portion 243 of the valve core 20, thereby better sealing the composite conduction port 20a.

[0071] like Fig.15 As shown, in some embodiments, the first sealing assembly 51 includes a first assembly 51a, and the first sealing block 510 included in the first assembly 51a includes a limiting portion 514, and the limiting portion 514 is located in the middle position of the main body 511 along the direction around the axis XX. Figure 12 to Figure 14 As shown, the first sealing assembly 51 includes a second assembly 51 b , and the second assembly 51 b includes a first sealing block 510 including at least two limiting portions 514 , and the limiting portions 514 are located at the end positions of the main body 511 along the direction around the axis XX.

[0072] In some embodiments, the first sealing block 510 includes at least two limiting portions 514. Along the direction around the axis XX, the first sealing block 510 includes a rib 512. The rib 512 is fixedly arranged on the side of the main body 511 away from the valve core 20, and the rib 512 protrudes from the main body 511 along the side away from the valve core 20. At least part of the rib 512 is located between two adjacent limiting portions 514, and the rib 512 abuts against the valve housing assembly 10. Through the above arrangement, it is convenient to make the abutting portion 516 abut more closely against the circumferential wall portion 243 of the valve core 20. In this embodiment, at least part of the rib 512 corresponds to the position of the recess 515. By abutting the rib 512 against the valve housing assembly 10, the deformation of the main body 511 is increased, and the sealing between the first sealing block 510 and the valve core 20 is improved.

[0073] In a specific implementation, the ribs 512 are fixedly arranged on the main body 511 through a vulcanization process, so that the ribs 512 are more tightly connected to the main body 511. The ribs 512 include at least one of a transverse rib 512a and a longitudinal rib 512b, wherein the transverse rib 512a extends along the circumferential direction of the first sealing block 510, and the longitudinal rib 512b extends along the axial direction of the first sealing block 510. Exemplarily, the transverse rib 512a and the longitudinal rib 512b may intersect to form a closed annular structure, and the present invention does not limit the structures of the transverse rib 512a and the longitudinal rib 512b.

[0074] 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 side wall portion 13 of the valve housing assembly 10, and in any working mode of the valve assembly 1, the third conduction port 241 and the fourth conduction port 242 conduct two or three of the third port P3, the fourth port P4 and the fifth port P5; the first sealing assembly 51 is correspondingly arranged with at least one of the third port P3, the fourth port P4 and the fifth port P5. Through the above arrangement, it is convenient to reduce or avoid the cross flow of fluids between the third port P3, the fourth port P4 and the fifth port P5.

[0075] 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.

[0076] Specifically, Fig.10As shown, the valve assembly 1 may further include a fourth sealing assembly 54, the fourth sealing assembly 54 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, and the sealing assembly corresponding to the selection port 102 may include the fourth sealing assembly 54 and the second assembly 51b, at which time the second assembly 51b may 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, at which time the second assembly 51b may 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, at which time the first assembly 51a may be arranged corresponding to the third port P3, and the second assembly 51b may be arranged corresponding to the fourth port P4 and the fifth port P5.

[0077] This article takes the example that the valve assembly includes the fourth sealing assembly 54 and the second assembly 51b, 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 invention has at least one of the following working modes;

[0078] like Fig.17 As shown, 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 with the second port P2 through the second conducting channel 252, and the fifth port P5 and the fourth port P4 are connected with the first port P1 through the first conducting channel 251, so that the third port M3 is connected with the second port M2, and the fifth port M5 and the fourth port M4 are connected with the first port M1.

[0079] like Fig.18 As shown, 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 with the second port P2 through the second conducting channel 252, the fifth port P5 is closed, and the first port P1 is connected with the fourth port P4 through the first conducting channel 251, so that the third port M3 is connected with the second port M2, the blocking portion of the valve core 20 closes the fifth port M5, and the first port M1 is connected with the fourth port M4.

[0080] like Fig.19 As shown, 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 with the second port P2 through the second conducting channel 252, the fourth port P4 is closed, and the first port P1 is connected with the fifth port P5 through the first conducting channel 251, so that the third port M3 is connected with the second port M2, the blocking portion of the valve core 20 closes the fourth port M4, and the first port M1 is connected with the fifth port M5.

[0081] like Fig. 20 As shown, 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 with the first port P1 through the first conducting channel 251, and the fifth port P5 and the fourth port P4 are connected with the second port P2 through the second conducting channel 252, so that the third port M3 is connected with the first port M1 through the first conducting channel 251, and the fifth port M5 and the fourth port M4 are connected with the second port M2 through the second conducting channel 252.

[0082] like Fig.21 As shown, in the fifth working mode of the valve assembly 1, the valve core 20 is located at 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 blocking portion 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.

[0083] like Fig. 22 As shown, 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 blocking portion 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.

[0084] 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.

[0085] In summary, according to the valve assembly 1 provided in the embodiment of the present invention, the first sealing assembly 51 includes a first elastic member 513 and a first sealing block 510, the first elastic member 513 is correspondingly connected to the connecting port C1, and along the direction around the axis XX, the extension distance of the wall portion defining the composite conducting port 20a is greater than the extension distance of the first elastic member 513, so as to facilitate the composite conducting port 20a to be connected to one connecting port C1 or at least two adjacent connecting ports C1; further, by setting the extension distance of the wall portion defining the composite conducting 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 conducting port 20a is correspondingly connected to the first sealing assembly 51, the portion of the composite conducting port 20a exceeding the first elastic member 513 can be sealed by the first sealing block 510, thereby reducing or preventing the fluid from entering the valve cavity 101 and entering other connecting ports C1 from the portion of the composite conducting port 20a exceeding the first elastic member 513, thereby improving the cross-flow phenomenon between the connecting ports C1 of the valve assembly 1.

[0086] like Figure 23 to Figure 25 FIG. 1 is a diagram showing a partial structure of a control valve assembly 1 and a fluid control device 2 provided in another embodiment of the present invention. The control valve assembly 1 and Figures 1 to 22 The structure of the driving assembly of the control valve assembly 1, the structure of the valve housing assembly 10, the structure of the second sealing member, the structure of the third sealing member and the installation method are similar, and the working mode of the control valve assembly 1 is similar to that of Figures 1 to 22 The working modes of the control valve assemblies 1 shown are at least partially the same, and the two control valve assemblies 1 differ at least in the structure of the valve core assembly 20 and the structure of the sealing assembly.

[0087] like Fig.23 and Fig.24 The valve core 20 of the embodiment of the present invention 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 valve core 20 of this embodiment and Figures 1 to 22The difference of the valve core shown is that: the valve core 20 may not include the composite conduction port 20a structure, the conduction port located at the circumferential wall portion 243 is a circular hole structure, and in order to realize the working mode of the valve assembly 1, the conduction ports located at the circumferential wall portion 243 may be six, that is, the number of conduction ports at this time is twice the number of the selection port 102, and the valve assembly 1 includes three fourth sealing components 54 and three blocking members 55, the fourth sealing components 54 correspond to the third port P3, the fourth port P4 and the fifth port P5 one by one, along the direction around the axis XX, the fourth sealing components 54 and the blocking members 55 are arranged alternately, and 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 the blocking block can block and close the conduction port. Through the above arrangement, the working mode requirements of the valve assembly 1 can be met and the cross-flow phenomenon between the connecting ports C1 can be improved.

[0088] It should be noted that in Figure 23 to Figure 25 The valve assembly shown in the figure 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, and the blocking member 55 can be replaced with the fourth sealing assembly 54 at this time, so that other multi-way valve structures can be realized, which will not be described in detail herein. The valve assembly herein can include a valve core shown in the accompanying drawings, and can also include two or more valve cores shown in the accompanying drawings, wherein at least two valve cores are arranged in parallel along a direction intersecting with 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.

[0089] The embodiment of the present invention may also include a method for manufacturing a fluid control device, including 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 to 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 transmittingly connecting with the valve core 20; installing the rotor assembly 423 to a portion of the outer circumference of the transmission shaft 32; sleeve the integral structure of the stator assembly 422 and the third housing portion 35 injection molding to 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.

[0090] It should be noted that the above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention, such as the directional definitions of "front", "back", "left", "right", "up" and "down". Although the present invention has been described in this specification with reference to the above embodiments, it should be understood by those skilled in the art that the present invention can still be modified, combined or replaced by equivalents, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

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 difference between the conduction cross-sectional area of ​​the first conduction channel (251) and the conduction cross-sectional area of ​​the second conduction channel (252) 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) isolates at least one of the first conducting channel (251) and the second conducting channel (252) from the valve chamber (101) fluid.

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. 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 8, 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).

10. The fluid control device (2) according to claim 9, 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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