Fluid control device

Abstract

The invention discloses a fluid control device which is provided with a driving cavity, the fluid control device comprises a first shell, a second shell, a valve element assembly, a pump assembly and a driving assembly, the first shell is provided with a containing cavity and a valve cavity which are arranged in a spaced mode, and at least part of the valve element assembly is located in the valve cavity; at least part of the second shell and one part of the pump assembly are both located in the containing cavity, and the other part of the pump assembly is arranged in the second shell in a sealed mode. The second shell forms a partial wall part of the driving cavity, the driving assembly comprises a driving piece, at least part of the driving piece is located in the driving cavity, and the driving piece can drive the valve element assembly to act; in this way, the occupied space of the fluid control device is conveniently reduced, and the integration level of the fluid control device is conveniently improved.

Description

Technical Field

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

[0002] The fluid control device includes several functional components, for example, the fluid control device includes pump rotors, valve cores 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. Summary of the invention

[0003] An object of the present invention 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.

[0004] An embodiment of the present invention 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 a portion of the valve core assembly is located in the valve chamber. At least a portion of the second shell and a portion of the pump assembly are both located in the accommodating chamber. Another portion of the pump assembly is sealed in the second shell. The second shell forms a partial wall portion of the drive chamber. The drive assembly includes a drive member, at least a portion of the drive member is located in the drive chamber, and the drive member can drive the valve core assembly to operate.

[0005] According to the fluid control device provided by the embodiment of the present invention, the first shell has a accommodating chamber and a valve chamber arranged at intervals, at least a portion of the valve core assembly is located in the valve chamber, and a portion of the pump assembly is located in the accommodating chamber, so that the valve core assembly and a portion of the pump assembly are integrated into the first shell; further, by also arranging at least a portion of the second shell in the accommodating chamber, and another portion of the pump assembly is sealed in the second shell, the second shell forms a portion of the wall of the drive chamber, so that the second shell can not only seal a portion of the pump assembly, but also form a portion of the wall of the drive chamber, and at least a portion 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 invention 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

[0006] Figure 1 is a schematic diagram of the three-dimensional structure of a fluid control device provided by an embodiment of the present invention;

[0007] Figure 2 yes Figure 1A partial structural schematic diagram of a fluid control device shown in FIG.

[0008] Figure 3 yes Figure 1 Another partial structural schematic diagram of a fluid control device shown in;

[0009] Figure 4 yes Figure 1 A schematic diagram of a cross-sectional structure of a fluid control device at one position is shown in FIG.

[0010] Figure 5 yes Figure 4 An enlarged structural schematic diagram of a fluid control device at Q1 is shown in FIG.

[0011] Figure 6 is a schematic diagram of a three-dimensional structure of a first shell provided by an embodiment of the present invention;

[0012] Figure 7 yes Figure 1 A partial cross-sectional enlarged structural schematic diagram of a fluid control device is shown in;

[0013] Figure 8 is a schematic diagram of a three-dimensional structure of a second shell provided by an embodiment of the present invention;

[0014] Fig. 9 yes Figure 8 A schematic diagram of a cross-sectional structure of a second shell is shown in FIG.

[0015] Fig.10 yes Figure 1 A schematic diagram of a cross-sectional structure of another fluid control device at one position shown in FIG.

[0016] Fig.11 yes Fig.10 A schematic diagram of a cross-sectional structure of a fluid control device along the AA direction is shown in FIG.

[0017] Fig.12 yes Fig.11 A schematic diagram of the enlarged structure of a fluid control device at Q2 is shown in FIG.

[0018] Fig.13 It is a schematic cross-sectional structure diagram of a fluid control device provided in yet another embodiment of the present invention. Description of the drawings:

[0020] 1. Fluid control device; XX, axis; 104, drive chamber; 105, port; 101, valve chamber; 102, selection port; 103, normal port; 15, connecting pipe; 16, first shell; 161, accommodating chamber; 162, second channel; K3, first flow port; 17, end cover; 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, transmission shaft; 33, partition; 34, third shell; 35, second shell; 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

[0021] 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.

[0022] like Figures 1 to 5 As shown, an embodiment of the present invention 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 path isolation, conduction and switching functions for the thermal management system.

[0023] The fluid control device 1 provided in the embodiment of the present invention 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 cover 17. The first housing 16 has an accommodating chamber 161 and a valve chamber 101 arranged at intervals. In the first housing 16, the accommodating chamber 161 and the valve chamber 101 are communicated, at least part 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 cover 17 covers and seals one side opening of the valve chamber 101. The third housing 34 is sealedly connected to the first housing 16, at least part of the second housing 35 and a part of the pump assembly 40 are both located in the accommodating chamber 161, and another part of the pump assembly 40 is sealedly arranged in the second housing 35. The fluid control device 1 has a driving chamber 104, and the second housing 35 and the third housing 34 can both form a part of the wall of the driving chamber 104. The driving assembly 30 includes a driving member 31, and at least a part of the driving member 31 is located in the driving chamber 104. The driving member 31 can drive the valve core assembly 20 to move, for example, the driving member 31 can rotate the valve core assembly 20 around the axis XX. Through the above arrangement, the second housing 35 can not only seal a part of the pump assembly 40, but also form a part of the wall of the driving chamber 104. Compared with setting a plurality of housings arranged in parallel for fixing the pump assembly and defining the driving chamber, the fluid control device 1 provided by the embodiment of the present invention can not only improve the integration, but also help to simplify the structure and reduce the occupied space of the fluid control device 1.

[0024] In some embodiments, the driving member 31 includes a motor 312 and a gear assembly 311, the output shaft of the motor 312 is connected to the gear assembly 311, and part of the gear assembly 311 is connected to the valve core through the transmission shaft 32. In the direction intersecting the height direction of the fluid control device 1, at least part of the motor 312 is arranged in parallel with the gear assembly 311, and at least part of the motor 312 is at the same height as part of the second housing 35. The third housing 34 and the first housing 16 define a part of the drive chamber 104, and the motor 312 is located in the drive chamber 104 defined by the third housing 34 and the first housing 16. Through the above arrangement, the axial height of the fluid control device 1 can be reduced. In other embodiments, the motor 312 can also be located in the accommodating chamber 104 defined by the second housing 35 and the third housing 34.

[0025] 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 overlaps the bearing portion, and the lug portion 354 and the bearing portion are fastened together by fasteners such as screws.

[0026] 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.

[0027] In some other embodiments, at least part of the accommodating chamber 161 and at least part of the valve chamber 101 are arranged in a direction intersecting with the height direction of the fluid control device 1, for example, at least part of the accommodating chamber 161 and at least part of the valve chamber 101 are arranged in a direction intersecting with the height direction perpendicular to the fluid control device 1. In this case, at least part of the pump assembly 40 and at least part 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, and a flow channel may be provided in the first housing 16, which connects the accommodating chamber 161 and the valve chamber 101. In this article, the height direction of the fluid control device 1 is parallel to or coincides with the axial direction of the pump assembly 40. This article takes the example that at least part of the pump assembly 40 and at least part of the valve core assembly 20 are coaxially arranged and arranged in the height direction of the fluid control device 1 as an example.

[0028] like Figures 1 to 9 As shown, in some embodiments, the pump assembly 40 includes a stator assembly 422, at least part of which is sealed and disposed inside the second housing 35, and 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. Through the above arrangement, it is possible to prevent the fluid from entering the area where the coil assembly 4221 is located to damage the coil assembly.

[0029] In a specific implementation, the stator assembly 422 includes a stator core, an insulating frame and a coil assembly 4221, the number of coil assemblies 4221 is at least three, the insulating frame is coated on at least part of the surface of the stator core, and the insulating frame is used to isolate the coil assembly 4221 and the stator core, so that the coil assembly 4221 and the stator core are electrically insulated. The insulating frame and the stator core can be an integral structural member. Specifically, as an implementation method, the insulating frame is formed by injection molding with the stator core as an insert. Of course, as other implementation methods, the insulating frame and the stator core are separately set, and the "separate setting" here means that the insulating frame and the stator core are respectively 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 assembly 4221 is wound around the insulating frame. As a specific embodiment, the coil assembly 4221 includes six coil assemblies 4221. Of course, as other embodiments, the coil assembly 4221 may also include other numbers of coil assemblies 4221, such as three, nine, twelve, etc. The stator assembly 422 may be an insert and injection-molded as an integral structure with the second housing 35, or the second housing 35 may have a chamber, and the stator assembly 422 may be limitedly installed inside the second housing 35.

[0030] In some embodiments, part of the driving member 31 is located on the side of the second housing 35 away from the valve core assembly 20. To realize the action of the driving member 31, the driving assembly 30 further includes a control member 36, which is located in the driving chamber 104, and at least part of the control member 36 is limitedly arranged with the second housing 35. Figure 3 In the embodiment, the driving assembly 30 further includes a boss 355, which is fixedly arranged with the second housing 35. Optionally, the boss 355 can be integrally molded, welded, or bonded with the second housing 35. The control member 36 is sleeved on the outer surface side 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).

[0031] Accordingly, in order to enable the control component 36 to transmit electrical signals to the stator component 422, the stator component 422 further includes an electrical connector 4222, at least part of which protrudes outside the second housing 35 and is located in the drive cavity 104, and the coil component 4221 is electrically connected to the control component 36 through the electrical connector 4222, so that the electrical signal can be transmitted between the coil component 4221 and the control component 36. Optionally, the electrical connector 4222 can be a terminal structure, which is electrically connected to the control component 36 by snapping or welding, or the electrical connector 4222 can also be a wire structure wound out of the coil component 4221. By disposing 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 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.

[0032] Further reading Figure 4 and Figure 5 In some embodiments, the pump assembly 40 further includes an impeller assembly 425 and a rotor assembly 423. The impeller assembly 425 and the rotor assembly 423 are both located in the accommodating chamber 161. When the stator assembly 422 is in working state, the rotor assembly 423 can be located within the magnetic field range 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 can also be arranged in parallel with the rotor assembly 423 along the axial direction of the pump assembly 40. In order to reduce the height of the fluid control device 1, the second housing 35 has an installation chamber 352, and at least part of the rotor assembly 423 is located in the installation chamber 352, which is convenient for reducing the axial height of the fluid control device 1, so that the fluid control device 1 has a compact structure. Furthermore, at least part of the impeller assembly 425 is spaced apart from the second housing 35 along the axial direction of the pump assembly 40, which is convenient for reducing the size of the second housing 35.

[0033] To achieve the rotation of the valve core assembly 20, in some embodiments, the drive assembly 30 includes a transmission shaft 32, a gear assembly 311 in the driving member 31 is transmission-connected to the transmission shaft 32, and a portion of the transmission shaft 32 passes through the second housing 35 and is transmission-connected to the valve core assembly 20. To improve fluid leakage, a seal is provided between the transmission shaft 32 and the second housing 35.

[0034] 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, a seal is provided between the transmission shaft 32 and the second housing 35 on the one hand, and a seal is provided between the inner wall of the first housing 16 and the outer wall of the second housing 35 on the other hand. Figure 4 In the third sealing member 73 structure and the first sealing member 71 structure, during the operation of the fluid control device 1, the fluid may escape from the third sealing member 73 structure and / or the first sealing member 71 to the driving chamber.

[0035] To improve the above problems and reduce or avoid fluid leakage into the driving chamber 104, in some embodiments, Figure 4 and Figure 5 As shown, the fluid control device 1 further includes a first seal 71 and a second seal 72, both of which surround the outer wall of the second housing 35, and are arranged at intervals along the height direction of the fluid control device 1. The second housing 35 has a first hole 351, and the first hole 351 has a first opening K1 located on the outer wall of the second housing 35. Along the height direction of the fluid control device 1, the first opening K1 is located in the gap space between the first seal 71 and the second seal 72, and the first hole 351 is connected to the gap between the transmission shaft 32 and the second housing 35. Through the above arrangement, the first hole 351 can be used as a drainage hole. When the fluid flows to the gap between the transmission shaft 32 and the second housing 35, the fluid can be discharged from the first hole 351 to the outside of the second housing 35, reducing or preventing the fluid from continuing to flow to the drive chamber 104. In this article, the second seal 72 is located on the side of the first seal 71 close to the drive chamber 104.

[0036] And / or, the fluid control device 1 further includes a third seal 73 and a fourth seal 74 which are coaxially and spaced apart. 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. The third seal 73 and the fourth seal 74 can prevent or reduce the flow of fluid between the chamber where the rotor assembly 423 is located and the drive chamber 104. 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. Through the above arrangement, the risk of fluid escaping from the third seal 73 and the fourth seal 74 can be reduced, and the fluid can be prevented from continuing to flow to the drive chamber 104. In this article, the fourth seal 74 is located on the side of the third seal 73 close to the drive chamber 104.

[0037] Optionally, the second housing 35 may have a mounting groove, and the first seal 71 and the second seal 72 may be mounted in the mounting groove and integrally mounted in the accommodating chamber 161 with the second housing 35. The fluid control device may further include a support member 78, which is supported and disposed between the third seal 73 and the fourth seal 74 along the axial direction of the transmission shaft 32.

[0038] In order to enable the fluid to be discharged from the accommodating chamber 161 to the outside of the fluid control device 1, in some embodiments, the first shell 16 has a second channel 162, and the second channel 162 has a first flow port K3 located on the inner side wall of the first shell 16. Along the height direction of the fluid control device 1, the first flow port K3 is located in the gap space 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 part of the first flow port K3 is misaligned with part of the first opening K1. Through the above arrangement, when the 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 channel 351 and the second channel 162.

[0039] In some embodiments, the fluid control device 1 may include the first seal 71, the second seal 72 and the second channel 162 at the same time, and the fluid control device 1 may only include the third seal 73, so that when the fluid escapes from the first seal 71, it can be discharged to the outside of the fluid control device 1 through the second channel 162. Or the fluid control device 1 may include the first seal 71, the second seal 72, the third seal 73, the fourth seal 74, the first channel 351 and the second channel 162 at the same time, so that when the 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 channel 351 and the second channel 162. Or the fluid control device 1 may include the first seal 71, the third seal 73, the fourth seal 74 and the first channel 351 at the same time, and the opening of the first channel 351 on the outer side wall of the second housing 35 is located on the side of the first seal 71 away from the drive chamber 104.

[0040] Optionally, the second housing 35 has at least two first channels 351, each of which may have at least one second opening K2, and at least two second openings K2 are symmetrical structures about the central axis of the pump assembly 40. Optionally, the first channel 351 may be a straight channel, and at least two first channels 351 are symmetrical structures about the central axis of the pump assembly 40. And / or, the first housing 16 has at least two second channels 162, each of which may have at least one first flow port K3, and at least two first flow ports K3 are symmetrical structures about the central axis of the pump assembly 40. Optionally, the second channel 162 may be a straight channel, and the two second channels 162 are symmetrical structures about the central axis of the pump assembly 40. For example Figure 5 Through the above-mentioned arrangement, it is convenient for the fluid to be discharged from the fluid control device to the outside, or even if the fluid outside the fluid control device enters the inside of the fluid control device from one of the second channels 162, the symmetrically arranged first channel 351 and second channel 162 structure facilitates the fluid to be discharged from the other second channel 162.

[0041] Since the fluid control device 1 is provided with some electrical components, such as the control component 36 and the coil assembly 4221, the electrical components will generate heat when powered on. In order to dissipate the heat of the electrical components and improve the working stability of the fluid control device 1, Figures 7 to 12 As shown, 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, and the second shell 35 has a fluid channel 353, and the fluid channel 353 runs through the outer wall of the second shell 35. The fluid channel 353 is arranged close to the driving 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 with the area where the impeller assembly 425 is located. Through the above arrangement, when the fluid enters the accommodating chamber 161 from the pump port 41, it is thrown radially outward of the impeller assembly 425 through the action of the impeller assembly 425, and a part of the fluid flows into the gap flow channel 75, and enters the area where the impeller assembly 425 is located after passing through the fluid channel 353, and leaves the fluid control device 1 through the impeller assembly 425, thereby completing the heat exchange of some electrical components. As shown in FIG. Figure 7 The flow path of the fluid is schematically shown using lines with arrows.

[0042] In some embodiments, the pump assembly 40 further includes a rotor assembly 423, the second housing 35 has an installation cavity 352, and at least part of the rotor assembly is located in the installation cavity 352; the fluid channel 353 runs through the outer wall of the second housing 35 and the wall 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. Through the above arrangement, the fluid can be filled into the installation cavity 352 through the gap flow channel 75 and the fluid channel 353, and the fluid in the fluid channel 353 and the installation cavity 352 facilitates heat dissipation of the control component 36 and the coil assembly 4221. Optionally, the wall thickness of the second housing 35 can be reduced to increase the heat dissipation capacity between the control component 36 and the coil assembly 4221.

[0043] When the pump assembly 40 is working, the coil assembly 4221 in the stator assembly 422 is energized and easily generates heat. 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. Figures 10 to 12 As shown, in some embodiments, the fluid channel 353 includes a first sub-channel 3531 and a second sub-channel 3532, and 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, and the second sub-channel 3532 is connected with the gap flow channel 75 through the first sub-channel 3531, and 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, and the second sub-channel 3532 is connected with the chamber where the impeller assembly 425 is located, and 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, and 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 part 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.

[0044] 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 channel 75 and the drive chamber 104, reducing or preventing the fluid from entering the drive chamber 104.

[0045] 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 are 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.

[0046] Combining the above possible implementation methods, such as Figures 1 to 12 As shown, 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 housing 16, so that the valve cavity 101 is divided into two chambers, 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 is located in the other chamber. When the valve core assembly 20 is coaxially arranged with the pump assembly 40, the first housing 16 has a normal port 103 and a selection port 102, and the normal port 103 may be located at the end wall defining the valve cavity 101, and the normal port 103 may coincide with the pump port 41, and the selection port 102 is located at the side wall of the first housing 16. In some other embodiments, such as Fig.13 As shown, the valve core assembly 20 may include a third valve core 23, and the fluid control device 1 at this time also includes a first sealing ring 76 and a second sealing ring 77, 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, so as to improve the sealing performance of the fluid control device 1 and reduce cross-flow. The fluid control device 1 may also include a connecting portion 15 and a port 105, part of the port 105 may be located in the connecting portion 15, and part of the port 105 may be located in the first housing 16, and through the rotation of the valve core assembly 20 and the rotation of the impeller assembly 425, the fluid can flow between the ports 105 to realize different working modes of the fluid control device 1.

[0047] In summary, according to the fluid control device 1 provided by the embodiment of the present invention, the first shell 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, so that the valve core assembly 20 and a portion of the pump assembly 40 are both integrated into the first shell 16; further, by also arranging at least a portion of the second shell 35 in the accommodating chamber 161, and another portion of the pump assembly 40 is sealed and arranged in the second shell 35, and arranging the second shell 35 and the third shell 34 to form a partial wall portion of the drive chamber 104, the second shell 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 drive member 31 is located in the drive chamber 104. Compared with arranging multiple shells to fix the pump assembly and define the drive chamber, the fluid control device 1 provided by the embodiment of the present invention can not only improve the integration, but also help to simplify the structure and reduce the occupied space of the fluid control device 1.

[0048] 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 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), the control member being located in the driving cavity (104), and at least a portion of the control member (36) being 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); 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).

5. The fluid control device (1) according to claim 4, 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).

6. The fluid control device (1) according to claim 5, 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).

7. The fluid control device (1) according to any one of claims 1 to 6, 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 channel (75) is provided between the second shell (35) and the first shell (16), and the second shell (35) has a fluid channel (353), and 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.

8. The fluid control device (1) according to claim 7, 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).

9. The fluid control device (1) according to claim 7, 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).

10. The fluid control device (1) according to any one of claims 1 to 6, characterized in that: The driving member (31) comprises a motor (312) and a gear assembly (311); an output shaft of the motor (312) is drivingly connected to the gear assembly (311); a portion of the gear assembly (311) is drivingly connected to the valve core 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 at the same height as a portion of the second housing (35); 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).

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