Valve assembly and fluid control device

Abstract

A fluid control device (1). The fluid control device (1) has a driving cavity (104), and comprises a first shell (16), a second shell (35), a valve core assembly (20), a pump assembly (40) and a driving assembly (30), wherein the first shell (16) has an accommodating cavity (161) and a valve cavity (101) which are arranged spaced apart; at least part of the valve core assembly (20) is located in the valve cavity (101); at least part of the second shell (35) and one part of the pump assembly (40) are both located in the accommodating cavity (161), and the other part of the pump assembly (40) is hermetically arranged inside the second shell (35); the second housing (35) forms part of a wall portion of the driving cavity (104); and the driving assembly (30) comprises a driving member (31), at least part of the driving member (31) being located in the driving cavity (104), and the driving member (31) being capable of driving the valve core assembly (20) to act. The present application facilitates reducing the space occupied by the fluid control device, and thus facilitates improving the integration level of the fluid control device.

Description

Valve Assemblies and Fluid Control Devices

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on June 29, 2023, with application number 2023107837105 and invention name “Fluid Control Device”, 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 fluid control device. Background Art

[0003] The fluid control device includes several functional components, such as a pump rotor, a valve core and other functional components. Different functional components require different power sources to drive them. How to arrange different power sources and functional components to improve the integration of the fluid control device and reduce the occupied space is a technical problem that needs to be solved urgently.

[0004] Summary of the Invention

[0005] The purpose of the present application is to provide a fluid control device, which is convenient for reducing the occupied space of the fluid control device and for improving the integration of the fluid control device.

[0006] The technical solution of the present application provides a fluid control device, which has a drive chamber. The fluid control device includes a first shell, a second shell, a valve core assembly, a pump assembly and a drive assembly. The first shell has a accommodating chamber and a valve chamber. At least part of the valve core assembly is located in the valve chamber. At least part of the second shell and a part of the pump assembly are both located in the accommodating chamber, and another part of the pump assembly is sealed in the second shell; the second shell forms a partial wall portion of the drive chamber, and the drive assembly includes a drive member, at least part of the drive member is located in the drive chamber, and the drive member can drive the valve core assembly to operate.

[0007] According to the fluid control device provided by the technical solution of the present application, the first shell has a accommodating chamber and a valve chamber arranged at intervals, at least part of the valve core assembly is located in the valve chamber, and part of the pump assembly is located in the accommodating chamber, which facilitates the integration of the valve core assembly and part of the pump assembly into the first shell; further, by also arranging at least part of the second shell in the accommodating chamber, and another part of the pump assembly is sealed in the second shell, the second shell forms part of the wall of the drive chamber, so that the second shell can not only seal a part of the pump assembly, but also form part of the wall of the drive chamber, and at least part of the drive member is located in the drive chamber. Compared with arranging multiple shells in parallel for fixing the pump assembly and defining the drive chamber, the fluid control device provided by the embodiment of the present application can not only improve the degree of integration, but also help to simplify the structure and reduce the occupied space of the fluid control device. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] FIG1 is a schematic diagram of the three-dimensional structure of a fluid control device provided by an embodiment of the present application;

[0009] FIG2 is a schematic diagram of a partial structure of a fluid control device shown in FIG1 ;

[0010] FIG3 is another partial structural schematic diagram of a fluid control device shown in FIG1 ;

[0011] FIG4 is a schematic cross-sectional view of a fluid control device shown in FIG1 at one position;

[0012] FIG5 is an enlarged structural schematic diagram of a fluid control device shown in FIG4 at position Q1;

[0013] FIG6 is a schematic diagram of the three-dimensional structure of a first housing provided in one embodiment of the present application;

[0014] FIG7 is a schematic diagram of an enlarged partial cross-section of a fluid control device shown in FIG1 ;

[0015] FIG8 is a schematic diagram of the three-dimensional structure of a second housing provided in one embodiment of the present application;

[0016] FIG9 is a schematic cross-sectional view of the second housing shown in FIG8 ;

[0017] FIG10 is a schematic cross-sectional view of another fluid control device shown in FIG1 at one position;

[0018] FIG11 is a schematic cross-sectional view of the fluid control device shown in FIG10 along the AA direction;

[0019] FIG12 is an enlarged structural schematic diagram of a fluid control device shown in FIG11 at position Q2;

[0020] FIG13 is a schematic cross-sectional view of a fluid control device according to another embodiment of the present application.

[0021] Description of the drawings:

[0022] 1. Fluid control device; XX, axis; 104, drive chamber; 105, port; 101, valve chamber; 102, gate port; 103, normal flow port; 15, connecting pipe; 16, first housing; 161, accommodating chamber; 162, second channel; K3, first flow port; 17, end cap; 20, valve core assembly; 21, first valve core; 22, second valve core; 23, third valve core; 30, drive assembly; 31, drive member; 311. Gear assembly; 312. Motor; 32. Drive shaft; 33. Partition; 34. Third housing; 35. Second housing; 351. First channel; K1. First opening; K2. Second opening; 352. Mounting cavity; 353. Fluid channel; 3531. First sub-channel; 3532. Second sub-channel; 354. Lug; 355. Boss; 36. Control member; 71. First seal; 72. Second seal; 73. Third seal; 74. Fourth seal; 75. Gap channel; 76. First sealing ring; 77. Second sealing ring; 78. Support member; 40. Pump assembly; 41. Pump port; 422. Stator assembly; 4221. Coil assembly; 4222. Electrical connector; 423. Rotor assembly; 424. Bearing assembly; 425. Impeller assembly. DETAILED DESCRIPTION

[0023] 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.

[0024] As shown in Figures 1 to 5, an embodiment of the present application provides 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.

[0025] The fluid control device 1 provided in the embodiment of the present application includes a first housing 16, a third housing 34, a second housing 35, a valve core assembly 20, a pump assembly 40, a drive assembly 30, and an end cap 17. The first housing 16 has an accommodating chamber 161 and a valve chamber 101, which are spaced apart. In the first housing 16, the accommodating chamber 161 and the valve chamber 101 are connected, and at least a portion of the valve core assembly 20 is located in the valve chamber 101. The third housing 34 covers and seals one side opening of the accommodating chamber 161, and the end cap 17 covers and seals one side opening of the valve chamber 101. The third housing 34 is sealed to the first housing 16, and at least a portion of the second housing 35 and a portion of the pump assembly 40 are both located in the accommodating chamber 161. Another portion of the pump assembly 40 is sealed within the second housing 35. The fluid control device 1 has a drive chamber 104. The second housing 35 and the third housing 34 can both form a portion of the wall of the drive chamber 104. The drive assembly 30 includes a driver 31, at least a portion of which is located in the drive chamber 104. The driver 31 can drive the valve core assembly 20 to operate. For example, the driver 31 can drive the valve core assembly 20 to rotate about the axis XX. Through the above arrangement, the second housing 35 can not only seal and dispose a portion of the pump assembly 40, but also form a portion of the wall of the drive chamber 104. Compared to providing multiple housings arranged in parallel to secure the pump assembly and define the drive chamber, the fluid control device 1 provided in the embodiment of the present application not only improves the integration level, but also facilitates a simplified structure and reduces the space occupied by the fluid control device 1.

[0026] In some embodiments, the drive member 31 includes a motor 312 and a gear assembly 311. The output shaft of the motor 312 is in driving connection with the gear assembly 311. A portion of the gear assembly 311 is in driving connection with the valve core via the transmission shaft 32. At least a portion of the motor 312 is arranged parallel to the gear assembly 311 in a direction intersecting the height of the fluid control device 1. At least a portion of the motor 312 is located at the same height as a portion of the second housing 35. The third housing 34 and the first housing 16 define the drive chamber 104. The motor 312 is located in the drive chamber 104 defined by the third housing 34 and the first housing 16. This arrangement can reduce the axial height of the fluid control device 1. In other embodiments, the motor 312 can also be located within the accommodating chamber 104 defined by the second housing 35 and the third housing 34.

[0027] In order to limit the position of the second shell 35 in the accommodating cavity 161, in some embodiments, the second shell 35 includes a lug portion 354, the first shell 16 has a bearing portion, the lug portion 354 is overlapped on the bearing portion, and the lug portion 354 and the bearing portion are fastened together by fasteners such as screws.

[0028] Optionally, at least a portion of the accommodating chamber 161 and at least a portion of the valve chamber 101 are arranged along the height direction of the fluid control device 1, so that at least a portion of the pump assembly 40 is coaxially arranged with at least a portion of the valve core assembly 20, and at least a portion of the pump assembly 40 and at least a portion of the valve core assembly 20 are arranged along the height direction of the fluid control device 1. At this time, the first shell 16 may have a pump port 41, which connects the accommodating chamber 161 and the valve chamber 101, so that the fluid can flow between the valve core assembly 20 and the pump assembly 40.

[0029] In some other embodiments, at least a portion of the accommodating chamber 161 and at least a portion of the valve chamber 101 are arranged in a direction intersecting the height direction of the fluid control device 1. For example, at least a portion of the accommodating chamber 161 and at least a portion of the valve chamber 101 are arranged in a direction intersecting the height direction of the fluid control device 1. In this case, at least a portion of the pump assembly 40 and at least a portion of the valve core assembly 20 are arranged side by side in a direction perpendicular to the height direction of the fluid control device 1. The first housing 16 may include a flow channel that connects the accommodating chamber 161 and the valve chamber 101. In this document, the height direction of the fluid control device 1 is parallel to or coincides with the axial direction of the pump assembly 40. This document uses the example of at least a portion of the pump assembly 40 and at least a portion of the valve core assembly 20 being coaxially arranged and arranged in the height direction of the fluid control device 1 as an example.

[0030] As shown in Figures 1 to 9, in some embodiments, the pump assembly 40 includes a stator assembly 422, at least a portion of which is sealed within the second housing 35. The stator assembly 422 includes a coil assembly 4221, and the area where the coil assembly 4221 is located is fluidically isolated from the accommodating cavity 161. This arrangement can prevent fluid from entering the area where the coil assembly 4221 is located and damaging the coil assembly.

[0031] In a specific implementation, the stator assembly 422 includes a stator core, an insulating frame, and coil assemblies 4221. There are at least three coil assemblies 4221. The insulating frame covers at least a portion of the surface of the stator core and is used to isolate the coil assemblies 4221 from the stator core, thereby electrically isolating the coil assemblies 4221 from the stator core. The insulating frame and the stator core can be an integral structural component. Specifically, as one implementation method, the insulating frame is formed by injection molding with the stator core as an insert. Of course, in other embodiments, the insulating frame and the stator core are provided as separate components. Here, "separately provided" means that the insulating frame and the stator core are processed into two separate parts and then assembled. The connection is limited or fixed by assembly. In this embodiment, the insulating frame is formed by injection molding with the stator core as an insert. It can be understood that the stator core and the insulating frame are an integral structure. The coil assemblies 4221 are wound around the insulating frame. As a specific embodiment, the coil assembly 4221 includes six coil assemblies 4221. Of course, in other embodiments, the coil assembly 4221 may also include other numbers of coil assemblies 4221, such as three, nine, or twelve. The stator assembly 422 may be an insert integrally molded with the second housing 35, or the second housing 35 may have a cavity, and the stator assembly 422 may be positionally mounted within the second housing 35.

[0032] In some embodiments, a portion of the driver 31 is located on a side of the second housing 35 facing away from the valve core assembly 20. To achieve the movement of the driver 31, the driver assembly 30 further includes a control member 36, which is located in the driver chamber 104. At least a portion of the control member 36 is positioned relative to the second housing 35. For example, in FIG3 , the driver assembly 30 further includes a boss 355, which is fixed to the second housing 35. Optionally, the boss 355 can be integrally injection molded, welded, or bonded to the second housing 35. The control member 36 is sleeved on the outer surface of the boss 355, so that the boss 355 limits the position of the control member 36. In this embodiment, the control member 36 can be a printed circuit board assembly (PCBA).

[0033] Accordingly, to enable the control component 36 to transmit electrical signals to the stator assembly 422, the stator assembly 422 further includes an electrical connector 4222. At least a portion of the electrical connector 4222 protrudes from the second housing 35 and is located in the drive cavity 104. The coil assembly 4221 is electrically connected to the control component 36 via the electrical connector 4222, enabling electrical signals to be transmitted between the coil assembly 4221 and the control component 36. Alternatively, the electrical connector 4222 may be a terminal structure that is snap-fitted or welded to the control component 36 to achieve electrical connection, or the electrical connector 4222 may be a wire structure wound around the coil assembly 4221. By arranging at least a portion of the second shell 35 in the accommodating cavity 161, and the second shell 35 forming a partial wall portion of the driving cavity 104, the electrical connector 4222 protrudes from the outside of the second shell 35 and can enter the driving cavity 104, thereby facilitating the installation of the electrical connector 4222 and the control component 36, avoiding inserting the electrical connector 4222 from the outside of the first shell 16 into the driving cavity 104, and avoiding the risk of damage to the external circuit structure during transportation and assembly and the risk of damage to the sealing structure of the driving cavity 104 during insertion.

[0034] Further referring to Figures 4 and 5, in some embodiments, the pump assembly 40 further includes an impeller assembly 425 and a rotor assembly 423. Both the impeller assembly 425 and the rotor assembly 423 are located in the accommodating cavity 161. When the stator assembly 422 is in operation, the rotor assembly 423 can be located within the magnetic field of the stator assembly 422, so that the rotor assembly 423 drives the impeller assembly 425 to rotate. In this embodiment, the rotor assembly 423 is sleeved on the inner circumference of the stator assembly 422, or the stator assembly 422 and the rotor assembly 423 can be arranged axially parallel to each other in the pump assembly 40. To reduce the height of the fluid control device 1, the second housing 35 has a mounting cavity 352, and at least a portion of the rotor assembly 423 is located in the mounting cavity 352, thereby reducing the axial height of the fluid control device 1 and making the fluid control device 1 compact. Furthermore, at least a portion of the impeller assembly 425 is spaced apart from the second housing 35 in the axial direction of the pump assembly 40, thereby reducing the size of the second housing 35.

[0035] To achieve rotation of the valve core assembly 20, in some embodiments, the drive assembly 30 includes a transmission shaft 32. The gear assembly 311 in the driving member 31 is in driving connection with the transmission shaft 32. A portion of the transmission shaft 32 passes through the second housing 35 and is in driving connection with the valve core assembly 20. To reduce fluid leakage, a seal is provided between the transmission shaft 32 and the second housing 35.

[0036] When the fluid enters the chamber where the impeller assembly 425 is located from the pump port 41, in order to reduce or prevent the fluid from entering the drive chamber 104, on the one hand, a seal is set between the transmission shaft 32 and the second housing 35, and on the other hand, a seal is set between the inner wall of the first housing 16 and the outer wall of the second housing 35, such as the third seal 73 structure and the first seal 71 structure in Figure 4. During the operation of the fluid control device 1, the fluid may escape from the third seal 73 structure and / or the first seal 71 to the drive chamber 104.

[0037] To improve the aforementioned issues and reduce or prevent fluid leakage into the drive chamber 104, in some embodiments, as shown in Figures 4 and 5, the fluid control device 1 further includes a first seal 71 and a second seal 72. The first seal 71 and the second seal 72 both surround the outer wall of the second housing 35 and are spaced apart along the height direction of the fluid control device 1. The second housing 35 includes a first channel 351 having a first opening K1 located in the outer wall of the second housing 35. The first opening K1 is located in the gap between the first seal 71 and the second seal 72 along the height direction of the fluid control device 1. The first channel 351 communicates with the gap between the drive shaft 32 and the second housing 35. This arrangement allows the first channel 351 to function as a drainage channel. When fluid flows into the gap between the drive shaft 32 and the second housing 35, the fluid can be discharged from the first channel 351 to the outside of the second housing 35, reducing or preventing further flow of fluid into the drive chamber 104. Herein, the second sealing member 72 is located on a side of the first sealing member 71 close to the driving cavity 104 .

[0038] Alternatively, the fluid control device 1 further includes a third seal 73 and a fourth seal 74 coaxially and spaced apart. Axially, the third seal 73 and the fourth seal 74 are located between the driver 31 and the pump assembly 40. The third seal 73 and the fourth seal 74 prevent or reduce fluid flow between the chamber containing the rotor assembly 423 and the drive chamber 104. Radially, the third seal 73 and the fourth seal 74 are sandwiched between the second housing 35 and the transmission shaft 32. The first channel 351 has a second opening K2 located on the inner sidewall of the second housing 35. Along the height of the fluid control device 1, the second opening K2 is located between the third seal 73 and the fourth seal 74. This arrangement reduces the risk of fluid escaping from the third seal 73 and the fourth seal 74, preventing fluid from continuing to flow into the drive chamber 104. Here, the fourth seal 74 is located on the side of the third seal 73 closest to the drive chamber 104.

[0039] Optionally, the second housing 35 may have a mounting groove, and the first sealing member 71 and the second sealing member 72 may be mounted in the mounting groove and integrally mounted with the second housing 35 in the accommodating chamber 161. The fluid control device may further include a support member 78, which is supported and disposed between the third sealing member 73 and the fourth sealing member 74 along the axial direction of the transmission shaft 32.

[0040] To enable fluid to be discharged from the accommodating cavity 161 to the exterior of the fluid control device 1, in some embodiments, the first housing 16 has a second channel 162. The second channel 162 includes a first flow port K3 located on the inner sidewall of the first housing 16. Along the height of the fluid control device 1, the first flow port K3 is located in the gap between the first seal 71 and the second seal 72, and the first flow port K3 is connected to the first opening K1. Optionally, the first flow port K3 is aligned with the first opening K1, or a portion of the first flow port K3 is offset from a portion of the first opening K1. This arrangement allows fluid escaping from the third seal 73 structure and / or the first seal 71 to be discharged to the exterior of the fluid control device 1 through the first channel 351 and the second channel 162.

[0041] In some embodiments, the fluid control device 1 may include a first seal 71, a second seal 72, and a second passage 162. In this case, the fluid control device 1 may include only the third seal 73, so that when fluid escapes from the first seal 71, it can be discharged to the outside of the fluid control device 1 through the second passage 162. Alternatively, the fluid control device 1 may include a first seal 71, a second seal 72, a third seal 73, a fourth seal 74, a first passage 351, and a second passage 162, so that when fluid escapes from the third seal 73 structure and / or the first seal 71, it can be discharged to the outside of the fluid control device 1 through the first passage 351 and the second passage 162. Alternatively, the fluid control device 1 may include a first seal 71, a third seal 73, a fourth seal 74, and a first passage 351, with the opening of the first passage 351 in the outer wall of the second housing 35 being located on the side of the first seal 71 facing away from the drive chamber 104.

[0042] Optionally, the second housing 35 has at least two first channels 351, each of which may have at least one second opening K2, with the at least two second openings K2 being symmetrically arranged about the central axis of the pump assembly 40. Alternatively, the first channels 351 may be straight channels, in which case the at least two first channels 351 are symmetrically arranged about the centerline of the pump assembly 40. Alternatively, the first housing 16 has at least two second channels 162, each of which may have at least one first flow opening K3, with the at least two first flow openings K3 being symmetrically arranged about the centerline of the pump assembly 40. Alternatively, the second channels 162 may be straight channels, in which case the two second channels 162 are symmetrically arranged about the centerline of the pump assembly 40. For example, as shown in FIG. 5 , this arrangement facilitates fluid discharge from the fluid control device. Alternatively, even if fluid from outside the fluid control device enters the fluid control device through one of the second channels 162, the symmetrical arrangement of the first and second channels 351, 162 facilitates fluid discharge through the other second channel 162.

[0043] Since the fluid control device 1 is provided with some electrical components, such as the control component 36 and the coil assembly 4221, the above-mentioned electrical components will generate heat when energized. In order to dissipate the heat of the above-mentioned electrical components and improve the working stability of the fluid control device 1, as shown in Figures 7 to 12, in some embodiments, along the radial direction of the pump assembly 40, there is a gap flow channel 75 between the second shell 35 and the first shell 16, that is, there is a gap between part of the outer wall of the second shell 35 and part of the inner wall of the first shell 16, the second shell 35 has a fluid channel 353, the fluid channel 353 passes through the outer wall of the second shell 35, and the fluid channel 353 is arranged near the drive chamber 104. The gap flow channel 75 connects the area where the impeller assembly 425 is located with one end of the fluid channel 353, and the other end of the fluid channel 353 is connected to the area where the impeller assembly 425 is located. With this arrangement, when fluid enters the accommodating chamber 161 from the pump port 41, it is ejected radially outward from the impeller assembly 425 by the impeller assembly 425. A portion of the fluid flows into the gap flow channel 75, passes through the fluid passage 353, and enters the area where the impeller assembly 425 is located. After passing through the impeller assembly 425, the fluid exits the fluid control device 1, completing heat exchange with some electrical components. The arrowed lines in Figure 7 schematically illustrate the fluid flow path.

[0044] In some embodiments, the pump assembly 40 further includes a rotor assembly 423. The second housing 35 has a mounting cavity 352, with at least a portion of the rotor assembly 423 located in the mounting cavity 352. A fluid channel 353 extends through the outer wall of the second housing 35 and the wall defining the mounting cavity 352. The mounting cavity 352 communicates with the chamber where the impeller assembly 425 is located. The interstitial flow channel 75 communicates with the mounting cavity 352 via the fluid channel 353. This arrangement allows fluid to flow through the interstitial flow channel 75 and the fluid channel 353 into the mounting cavity 352. The fluid in the fluid channel 353 and the mounting cavity 352 facilitates heat dissipation from the control component 36 and the coil assembly 4221. Optionally, the wall thickness of the second housing 35 can be reduced to increase heat dissipation between the control component 36 and the coil assembly 4221.

[0045] When the pump assembly 40 is working, the coil assembly 4221 in the stator assembly 422 is easily heated when it is energized. If the coil assembly 4221 is not cooled, the temperature of the stator assembly 422 will continue to rise, thereby affecting the normal operation of the pump assembly 40. As shown in Figures 10 to 12, in some embodiments, the fluid channel 353 includes a first sub-channel 3531 and a second sub-channel 3532. The extension direction of the first sub-channel 3531 intersects with the extension direction of the second sub-channel 3532. For example, the extension direction of the first sub-channel 3531 is perpendicular to the extension direction of the second sub-channel 3532. The second sub-channel 3532 is connected to the gap flow channel 75 through the first sub-channel 3531. The first sub-channel 3531 and the second sub-channel 3532 are both close to the stator assembly 422, and the first sub-channel 3531 and the second sub-channel 3532 are arranged on the outer peripheral side of the coil assembly 4221. The second sub-channel 3532 is connected to the chamber where the impeller assembly 425 is located. The first sub-channel 3531 passes through the outer wall of the second shell 35, and the second sub-channel 3532 extends along the axial direction of the pump assembly 40. Along the circumferential direction of the pump assembly 40, the second sub-channel 3532 is located between two adjacent coil assemblies 4221. Through the above-mentioned arrangement, the second shell 35 opens a flow channel at the gap between adjacent coil assemblies 4221, so that when the fluid enters the chamber where the impeller assembly 425 is located through the pump port 41, a portion of the fluid can enter the gap flow channel 75 and return to the chamber where the impeller assembly 425 is located through the first sub-channel 3531 and the second sub-channel 3532, thereby facilitating the heat dissipation of the coil assembly 4221 in the stator assembly 422.

[0046] When the second housing 35 has a fluid channel 353, along the axial direction of the pump assembly 40, the first seal 71 and the third seal 73 are both located between the fluid channel 353 and the drive chamber 104. Similarly, along the axial direction of the pump assembly 40, the first seal 71 is located between the gap flow channel 75 and the drive chamber 104, reducing or preventing the fluid from entering the drive chamber 104.

[0047] Exemplarily, the first channel 351 may be omitted from the second shell 35, in which case a fluid channel 353 may be provided in the second shell 35; or the first channel 351 and the fluid channel 353 may be provided at the same time in the second shell 35, the fluid channel 353 and the first channel 351 being arranged along the height direction of the fluid control device 1, and the opening of the fluid channel 353 on the outer wall of the second shell 35 is located on the side of the first seal 71 away from the second seal 72, the opening of the fluid channel 353 on the inner wall of the second shell 35 is located on the side of the third seal 73 away from the fourth seal 74, or the other opening of the fluid channel 353 is located on the end wall of the second shell 35 facing the impeller assembly 425.

[0048] In combination with the above possible implementation methods, as shown in Figures 1 to 12, the valve core assembly 20 may include a first valve core 21 and a second valve core 22 that are transmission-connected, and the fluid control device 1 may further include a partition 33, which is sealed with the first shell 16 so that the valve cavity 101 is divided into two chambers, at least part of the first valve core 21 is located in one of the chambers, and at least part of the second valve core 22 is located in the other chamber. When the valve core assembly 20 is coaxially arranged with the pump assembly 40, the first shell 16 has a normal port 103 and a selection port 102. The normal port 103 can be located on the end wall that defines the valve cavity 101, the normal port 103 can coincide with the pump port 41, and the selection port 102 is located on the side wall of the first shell 16. In other embodiments, as shown in FIG13 , the valve core assembly 20 may include a third valve core 23. In this case, the fluid control device 1 further includes a first sealing ring 76 and a second sealing ring 77. The first sealing ring 76 is located between the top wall defining the valve chamber 101 and the third valve core 23, and the second sealing ring 77 is located between the end cover 17 and the third valve core 23, thereby improving the sealing performance of the fluid control device 1 and reducing cross-flow. The fluid control device 1 may further include a connecting pipe 15 and ports 105. Some ports 105 may be located in the connecting pipe 15, and some ports 105 may be located in the first housing 16. The rotation of the valve core assembly 20 and the rotation of the impeller assembly 425 allow fluid to circulate between the ports 105, thereby realizing different operating modes of the fluid control device 1.

[0049] In summary, according to the fluid control device 1 provided in the embodiment of the present application, the first housing 16 has an accommodating chamber 161 and a valve chamber 101 that are spaced apart. At least a portion of the valve core assembly 20 is located in the valve chamber 101, and a portion of the pump assembly 40 is located in the accommodating chamber 161, which facilitates integrating the valve core assembly 20 and a portion of the pump assembly 40 into the first housing 16. Furthermore, by also arranging at least a portion of the second housing 35 in the accommodating chamber 161, and sealing another portion of the pump assembly 40 in the second housing 35, and arranging the second housing 35 and the third housing 34 to form a partial wall portion of the drive chamber 104, the second housing 35 can not only seal a portion of the pump assembly 40, but also form a partial wall portion of the drive chamber 104, and at least a portion of the driving member 31 is located in the drive chamber 104. Compared with setting multiple housings to fix the pump assembly and define the drive chamber, the fluid control device 1 provided in the embodiment of the present application can not only improve the integration, but also help to simplify the structure and reduce the occupied space of the fluid control device 1.

[0050] 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 fluid control device (1), characterized in that: The fluid control device (1) has a drive chamber (104), and comprises a first housing (16), a second housing (35), a valve core assembly (20), a pump assembly (40) and a drive assembly (30); the first housing (16) has a receiving chamber (161) and a valve chamber (101); at least a portion of the valve core assembly (20) is located in the valve chamber (101); at least a portion of the second housing (35) and a portion of the pump assembly (40) are both located in the receiving chamber (161); another portion of the pump assembly (40) is sealed in the second housing (35); The second shell (35) forms a partial wall portion of the drive chamber (104); the drive assembly (30) includes a drive member (31); at least a portion of the drive member (31) is located in the drive chamber (104); and the drive member (31) is capable of driving the valve core assembly (20) to operate.

2. The fluid control device (1) according to claim 1, characterized in that: The pump assembly (40) includes a stator assembly (422), at least part of which is sealed and disposed in the second shell (35), and the stator assembly (422) includes a coil assembly (4221), and the area where the coil assembly (4221) is located is isolated from the fluid of the accommodating chamber (161).

3. The fluid control device (1) according to claim 2, characterized in that: The driving assembly (30) further comprises a control member (36), wherein the control member (36) is located in the driving cavity (104), and at least a portion of the control member (36) is disposed in a limiting manner with the second housing (35); The stator assembly (422) also includes an electrical connector (4222), at least part of which protrudes outside the second shell (35) and is located in the drive cavity (104), and the coil assembly (4221) is electrically connected to the control component (36) via the electrical connector (4222).

4. The fluid control device (1) according to claim 2, characterized in that: The driving assembly (30) comprises a transmission shaft (32), the driving member (31) is in transmission connection with the transmission shaft (32), and a portion of the transmission shaft (32) passes through the second housing (35) and is in transmission connection with the valve core assembly (20).

5. The fluid control device (1) according to claim 4, characterized in that: The fluid control device (1) further comprises a first sealing member (71) and a second sealing member (72), wherein the first sealing member (71) and the second sealing member (72) both surround the outer side wall of the second housing (35), and the first sealing member (71) and the second sealing member (72) are arranged at intervals along the height direction of the fluid control device (1); the second housing (35) comprises a first hole (351), and the first hole (351) comprises a first opening (K1) located on the outer side wall of the second housing (35); along the height direction of the fluid control device (1), the first opening (K1) is located between the first sealing member (71) and the second sealing member (72), and the gap between the transmission shaft (32) and the second housing (35) is connected to the first hole (351); And / or, the fluid control device (1) further comprises a third seal (73) and a fourth seal (74) which are coaxially and spaced apart from each other; along the axial direction of the pump assembly (40), the third seal (73) and the fourth seal (74) are both located between the drive member (31) and the pump assembly (40); along the radial direction of the pump assembly (40), the third seal (73) and the fourth seal (74) are both sandwiched between the second housing (35) and the transmission shaft (32); the first channel (351) has a second opening (K2) located on the inner side wall of the second housing (35); along the height direction of the fluid control device (1), the second opening (K2) is located between the third seal (73) and the fourth seal (74).

6. The fluid control device (1) according to claim 5, characterized in that: The first shell (16) has a second channel (162), and the second channel (162) has a first flow port (K3) located on the inner wall of the first shell (16). Along the height direction of the fluid control device (1), the first flow port (K3) is located between the first sealing member (71) and the second sealing member (72), and the first flow port (K3) is connected to the first opening (K1).

7. The fluid control device (1) according to claim 6, characterized in that: The second housing (35) has at least two of the first holes (351), and the at least two of the first holes (351) are symmetrical structures with respect to the central axis of the pump assembly (40); And / or, the first housing (16) has at least two second holes (162), and the two second holes (162) are symmetrical structures with respect to the central axis of the pump assembly (40).

8. The fluid control device (1) according to any one of claims 1 to 7, characterized in that: The pump assembly (40) further comprises an impeller assembly (425) and a stator assembly (422); the impeller assembly (425) is located in the accommodating chamber (161); when the stator assembly (422) is in a working state, the impeller assembly (425) is capable of rotating; Along the radial direction of the pump assembly (40), a gap flow passage (75) is provided between the second housing (35) and the first housing (16), and the second housing (35) has a fluid passage (353). The fluid channel (353) passes through the outer wall of the second shell (35), and the gap flow channel (75) connects the area where the impeller assembly (425) is located with one end of the fluid channel (353), and the other end of the fluid channel (353) is connected with the area where the impeller assembly (425) is located.

9. The fluid control device (1) according to claim 8, characterized in that: The pump assembly (40) further comprises a rotor assembly, wherein the second housing (35) has a mounting cavity (352), and at least a portion of the rotor assembly is located in the mounting cavity (352); The fluid channel (353) passes through the outer wall of the second shell (35) and the wall portion defining the installation cavity (352); the installation cavity (352) is connected to the chamber where the impeller assembly (425) is located; and the gap flow channel (75) is connected to the installation cavity (352) through the fluid channel (353).

10. The fluid control device (1) according to claim 8, characterized in that: The pump assembly (40) comprises a stator assembly (422), the stator assembly (422) comprises a coil assembly (4221), the fluid channel (353) comprises a first sub-channel (3531) and a second sub-channel (3532), the extension direction of the first sub-channel (3531) intersects with the extension direction of the second sub-channel (3532), the second sub-channel (3532) is connected to the gap flow channel (75) through the first sub-channel (3531), and the first sub-channel (3531) is connected to the gap flow channel (75). The first sub-channel (3531) and the second sub-channel (3532) are both close to the stator assembly (422), the second sub-channel (3532) is connected to the chamber where the impeller assembly (425) is located, the first sub-channel (3531) passes through the outer wall of the second shell (35), the second sub-channel (3532) extends along the axial direction of the pump assembly (40), and along the circumferential direction of the pump assembly (40), the second sub-channel (3532) is located between two adjacent coil assemblies (4221).

11. The fluid control device (1) according to any one of claims 1 to 7, characterized in that: The driving member (31) comprises a motor (312) and a gear assembly (311); an output shaft of the motor (312) is transmission-connected to the gear assembly (311); a portion of the gear assembly (311) is transmission-connected to the valve core assembly (20) via the transmission shaft (32); at least a portion of the motor (312) is arranged in parallel with the gear assembly (311) along a direction intersecting with a height direction of the fluid control device (1); and at least a portion of the motor (312) is located at the same height as a portion of the second housing (35).

12. The fluid control device (1) according to claim 11, characterized in that: The fluid control device (1) further comprises a third shell (34), wherein the third shell (34) and the first shell (16) define a portion of the drive chamber (104), and the motor (312) is located in the drive chamber (104) defined by the third shell (34) and the first shell (16).

13. The fluid control device (1) according to any one of claims 1 to 12, characterized in that: The valve core assembly (20) comprises a first valve core (21) and a second valve core (22), and the fluid control device further comprises a partition (33), wherein the partition (33) is sealed with the first housing (16), and the valve cavity (101) is divided into two chambers by the partition (33), wherein at least a portion of the first valve core (21) is located in one of the chambers, and at least a portion of the second valve core (22) is located in the other chamber; Alternatively, the valve core assembly (20) includes a third valve core (23), and the fluid control device (1) also includes an end cover (17), a first sealing ring (76) and a second sealing ring (77), wherein the first sealing ring (76) is located between the top wall portion defining the valve cavity (101) and the third valve core (23), and the second sealing ring (77) is located between the end cover (17) and the third valve core (23).

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