Fluid management device

Abstract

The fluid management device for air conditioning system provided by the embodiment of the application comprises a stator assembly, a first rotor and a second rotor, the first rotor and the second rotor are respectively connected with an impeller and a valve core, the fluid management device is relatively compact, the fluid management device comprises one stator assembly, the number of components is correspondingly reduced, and the control is relatively simple.

Description

Technical Field

[0001] This invention relates to the field of fluid management technology, and more specifically to a fluid management device. Background Technology

[0002] The thermal management system includes several functional components. Different functional components require different power sources to drive them. The different power sources make the integration of functional components relatively complex and the size relatively large. Even after integration, the integrated components are not compact enough. Summary of the Invention

[0003] The purpose of this application is to provide a fluid management device to help solve the above-mentioned problems.

[0004] One embodiment of this application provides a fluid management device, including a housing, a motor assembly, an impeller, and a valve core. The motor assembly includes a stator assembly, a first rotor, and a second rotor. The stator assembly is capable of rotating the first rotor and the second rotor. The first rotor is drivenly connected to the impeller, and the second rotor is drivenly connected to the valve core. The fluid management device has a first receiving cavity, a second receiving cavity, and a third receiving cavity. The first receiving cavity, the second receiving cavity, and the third receiving cavity are located within the housing. At least a portion of the motor assembly is located in the first receiving cavity, the impeller is located in the second receiving cavity, and the valve core is located in the third receiving cavity.

[0005] The fluid management device has a first port, a second port, a third port, a fourth port, and a fifth port. The first port and the fourth port are respectively connected to the second receiving cavity. The second port, the third port, and the fifth port are connected to the third receiving cavity. The valve core is capable of connecting at least one of the third port and the second port to the fifth port.

[0006] The fluid management device for an air conditioning system provided by the embodiments of this application includes a stator assembly, a first rotor and a second rotor. The first rotor and the second rotor are respectively connected to an impeller and a valve core. Such a fluid management device is relatively compact, and the first rotor and the second rotor of the fluid management device share a stator assembly, requiring a corresponding circuit board for control, which can also reduce the number of parts. Attached Figure Description

[0007] Figure 1 This is a three-dimensional structural schematic diagram from one perspective of the first embodiment of the fluid management device;

[0008] Figure 2 yes Figure 1 A schematic diagram of the exploded structure of a fluid management device in a [missing information];

[0009] Figure 3 yes Figure 1 A three-dimensional structural diagram of the fluid management device when the second housing is removed, from one perspective;

[0010] Figure 4 yes Figure 1 Top view of the fluid management device;

[0011] Figure 5 yes Figure 4 Schematic diagram of the cross-sectional structure along AA;

[0012] Figure 6 yes Figure 1 A three-dimensional structural diagram of the first shell from one perspective;

[0013] Figure 7 yes Figure 1 A three-dimensional structural diagram of the first shell from another perspective;

[0014] Figure 8 This is a three-dimensional structural schematic diagram from one perspective of a second embodiment of the fluid management device;

[0015] Figure 9 yes Figure 8 A schematic diagram of the exploded structure of a fluid management device from one perspective;

[0016] Figure 10 yes Figure 8 An exploded structural diagram of the fluid management device from another perspective;

[0017] Figure 11 yes Figure 8 Another perspective on the exploded structure of the fluid management device in the diagram;

[0018] Figure 12 yes Figure 8 Top view of the fluid management device;

[0019] Figure 13 yes Figure 12 Schematic diagram of the cross-sectional structure along BB;

[0020] Figure 14 This is another cross-sectional view of the fluid management device;

[0021] Figure 15 This is a three-dimensional structural schematic diagram from one perspective of a third embodiment of the fluid management device;

[0022] Figure 16 yes Figure 15 A schematic diagram of the exploded structure of a fluid management device from one perspective;

[0023] Figure 17 yes Figure 15 A schematic diagram of the exploded structure of the fluid management device from another perspective;

[0024] Figure 18 yes Figure 15 A front view schematic diagram of a fluid management device;

[0025] Figure 19 yes Figure 18 Schematic diagram of the cross-sectional structure along CC;

[0026] Figure 20 yes Figure 15 A three-dimensional structural diagram of the first isolation sleeve from one perspective;

[0027] Figure 21 yes Figure 15 A three-dimensional structural diagram of the second isolation sleeve from one perspective;

[0028] Figure 22 yes Figure 21 A front view schematic diagram of the second isolation sleeve in the middle;

[0029] Figure 23 yes Figure 22 Schematic diagram of the cross-sectional structure along DD;

[0030] Figure 24 This is a cross-sectional view of the isolation sleeve.

[0031] Figure 25 This is a three-dimensional structural schematic diagram from one perspective of a fourth embodiment of the fluid management device;

[0032] Figure 26 yes Figure 25 A schematic diagram of the exploded structure of a fluid management device from one perspective;

[0033] Figure 27 yes Figure 25 A schematic diagram of the exploded structure of the fluid management device from another perspective;

[0034] Figure 28 yes Figure 25 Top view of the fluid management device;

[0035] Figure 29 yes Figure 28 Schematic diagram of the cross-sectional structure along EE;

[0036] Figure 30 This is another cross-sectional structural schematic diagram of the fluid management device. Detailed Implementation

[0037] The fluid management device of the present invention can be implemented in various ways. At least one of the embodiments can be applied to a vehicle thermal management system, and at least one of the embodiments can be applied to other thermal management systems such as a household thermal management system or a commercial thermal management system. The following description takes the fluid management device applied to a vehicle thermal management system as an example and is illustrated with reference to the accompanying drawings. The fluid includes coolant.

[0038] Please see Figures 1-30 This application provides a fluid management device, including a housing, a motor assembly, and an actuator. The actuator includes a first actuator and a second actuator. The first actuator can be a valve core, and the second actuator can be an impeller. When the fluid management device is working, the valve core can change the flow direction of the fluid, and the impeller can provide power for the fluid flow. The fluid management device has a first receiving cavity, a second receiving cavity, and a third receiving cavity, which are located within the housing. At least a portion of the motor assembly is located in the first receiving cavity, the first actuator is located in the second receiving cavity, and the second actuator is located in the third receiving cavity. The motor assembly includes a stator assembly, a first rotor, and a second rotor. When the fluid management device is energized, the stator assembly enables the first rotor to rotate, and the stator assembly enables the second rotor to rotate. The first rotor is driven by the first actuator, and the second rotor is driven by the second actuator. The fluid management device has a first port and a second port, wherein the first port can communicate with the second receiving cavity, and the second port can communicate with the third receiving cavity. The first port and the second port can be formed in the housing or located in a pipe fixedly connected to the housing. In this embodiment, along the radial direction of the first receiving cavity, the stator assembly is closer to the housing than the first rotor and the second rotor. Of course, there are other embodiments with different positional relationships between the first rotor, the second rotor, and the stator, which will not be described in detail here. The stator assembly of the fluid management device can control the operation of the first rotor and the second rotor respectively. The first rotor and the second rotor are respectively connected to the first actuating component and the second actuating component. The fluid management device also has a first port and a second port. The first port communicates with the second receiving cavity, and the second port can communicate with the third receiving cavity. Thus, the fluid management device can control the operation of the first actuating element and the second actuating element respectively. For example, when the first actuating element and the second actuating element are impellers, the impellers can drive the fluid flow in the second receiving cavity and the third receiving cavity. As another example, when the first actuating element is an impeller and the second actuating element is a valve core, the impellers can drive the fluid flow in the second receiving cavity, and the valve core can change the fluid flow direction in the third receiving cavity. The fluid management device is relatively compact, and since the first rotor and the second rotor of the fluid management device share a single stator assembly, a corresponding circuit board is needed for control, which helps reduce the number of components.

[0039] Please see Figures 1-7In this embodiment, the fluid management device 10 includes a housing 11, a motor assembly, and an actuator. The motor assembly includes a stator assembly 141, a first rotor 142, and a second rotor 143. After the fluid management device is powered on, the excitation magnetic field generated by the stator assembly 141 can cause the first rotor 142 to rotate, and the excitation magnetic field generated by the stator assembly 141 can cause the second rotor 143 to rotate. The actuator includes a first actuator and a second actuator. The first rotor and the second rotor are respectively connected to the first actuator and the second actuator. The first actuator is an impeller 12, and the second actuator is a valve core 13. The valve core 13 is a spherical valve core, but it can also be other types of valve cores, such as a cylindrical valve core. The fluid management device 10 has a first port 1001 and a second port 1002, and also has a third port 1003, a fourth port 1004, and a fifth port 1005. The fourth port 1004 is connected to the second receiving cavity 1102. When the fluid management device 10 is in operation, one of the first port 1001 and the fourth port 1004 is an inlet of the fluid management device 10, and the other is an outlet of the fluid management device 10. In this embodiment, the first port 1001 is the first inlet of the fluid management device 10, and the fourth port 1004 is the first outlet of the fluid management device 10. The third port 1003 and the fifth port 1005 can be connected to the third receiving cavity 1103. The valve core 13 can connect at least one of the third port 1003 and the second port 1002 to the fifth port 1005. In this embodiment, the fifth port 1005 can be an inlet of the fluid management device 10, and the third port 1003 and the second port 1002 are respectively two outlets of the fluid management device 10. Of course, the fluid management device 10 may also include other ports that can communicate with the third receiving cavity 1103, through which fluid can flow into or out of the fluid management device 10.

[0040] The housing 11 includes a first housing 111, a second housing 112, and a third housing 113. Along the axial direction of the first rotor 142, the second housing 112 is located on one side of the first housing 111, and the third housing 113 is located on the other side of the first housing 111. The second housing 112 and the third housing 113 are located on different sides of the first housing 111. The first housing 111 and the second housing 112 are sealed together, and the first housing 111 and the third housing 113 are sealed together. In this embodiment, the wall forming the second receiving cavity 1102 includes the inner wall of the second housing 112, the first opening 1001 is formed in the second housing 112, and the wall forming the third receiving cavity 1103 includes the inner wall of the second housing 112. Specifically, the first housing 111 includes a first body 1111 and a second body 1112. The first body 1111 and the second body 1112 are integrally structured, fixedly connected, or limitedly connected. The first body 1111 has a first receiving cavity 1101 with an opening facing the impeller 12. At least a portion of the motor assembly is located in the first receiving cavity 1101. In this embodiment, the stator assembly 141 is fixedly connected or limitedly connected to the first body 1111. Along the radial direction of the first receiving cavity 1101, the stator assembly 141 is located on the outer periphery of the second rotor 143, and the first rotor 142 is located on the inner periphery of the second rotor 143. The wall forming the third receiving cavity 1103 includes the second body 1112. The valve core 13 is located in the third receiving cavity 1103. The second opening 1002, the third opening 1003, and the fifth opening 1005 are located in the second body 1112. The axis of the first receiving cavity 1101 is arranged parallel to the axis of the second receiving cavity 1102. This parallel arrangement includes the case where the axis of the first receiving cavity 1101 and the axis of the second receiving cavity 1102 are coaxial, and also includes the case where the axis of the first receiving cavity 1101 and the axis of the second receiving cavity 1102 are not coaxial but parallel. In other words, the parallel arrangement mentioned here includes the case where the first receiving cavity 1101 and the second receiving cavity 1102 are distributed along the axial direction of the first receiving cavity 1101, and also includes the case where the first receiving cavity 1101 and the second receiving cavity 1102 are distributed in a direction perpendicular to the axis of the first receiving cavity 1101.

[0041] Please see Figure 5The fluid management device 10 includes an isolation sleeve 15, which isolates the first rotor 142 from the second rotor 143 and the stator assembly 141. Specifically, at least a portion of the isolation sleeve 15 is located in the first receiving cavity 1101, at least a portion of the first rotor 142 is located on the inner periphery of the isolation sleeve 15, and the stator assembly 141 and the second rotor 143 are located on the outer periphery of the isolation sleeve 15. The isolation sleeve 15 is sealed to the first housing 111. Specifically, the isolation sleeve 15 includes an ear portion 151 and a main body portion 152. The main body portion 152 is located in the first receiving cavity 1101 and has a recessed cavity in which the first rotor 142 is located. The opening of the recessed cavity faces the impeller 12. The ear portion 151 extends radially from the opening of the recessed cavity of the main body portion 152 along the first receiving cavity 1101. The ear portion 151 is sealed to the inner wall of the first main body 1111. In this way, the fluid in the second receiving cavity 1102 cannot enter the cavity where the stator assembly 141 is located, preventing the fluid from damaging the stator assembly 141 and improving the life of the fluid management device 10.

[0042] In this embodiment, the third receiving cavity 1103 and the second receiving cavity 1102 are distributed in a direction perpendicular to the axis of the first rotor 142. Specifically, a first direction is defined, which is perpendicular to the axis of the first rotor 142, and the first body 1111 and the second body 1112 are distributed along the first direction. This reduces the volume of the fluid management device 10 along the axial direction of the first rotor 142, which is beneficial for miniaturization of the fluid management device 10. The fluid management device 10 includes a first shaft 161, which is fixedly or partially connected to a valve core 13. A second body 1112 includes a first isolation portion 1113 with a first receiving hole. A portion of the first shaft 161 is located within the first receiving hole. A third receiving cavity 1103 includes a first sub-cavity 1105 and a valve cavity 1106. The valve core 13 is located in the valve cavity 1106. Along the axial direction of the first shaft 161, the first sub-cavity 1105 is located on one side of the first isolation portion 1113, and the valve cavity 1106 is located on the opposite side of the first isolation portion 1113. Thus, a portion of the first shaft 161 is located in the first sub-cavity 1105, and another portion of the first shaft 161 is located in the valve cavity 1106 and is fixedly or partially connected to the valve core 13. A sealing arrangement is provided between the first shaft 161 and the wall of the first receiving hole to prevent fluid in the valve cavity 1106 from entering the first sub-cavity 1105.

[0043] Please see Figure 2 , Figure 3 and Figure 5The fluid management device 10 also includes a transmission component 17, at least a portion of which is located in the first sub-cavity 1105. The transmission component 17 includes a first tooth 171 and a second tooth 172. The first tooth 171 is fixedly connected to the second rotor 143, and the second tooth 172 is fixedly connected to the first shaft 161. The first tooth 171 and the second tooth 172 are directly or indirectly connected in transmission. When the fluid management device 10 is working, the first tooth 171 can drive the second tooth 172 to move, thereby causing the valve core 13 to move. In a more specific embodiment, the transmission component 17 further includes an intermediate tooth 173. Correspondingly, the housing 11 has a connecting hole 1110, which has openings in the walls of the first receiving cavity 1101 and the first sub-cavity 1105, respectively. The connecting hole 1110 connects the first receiving cavity 1101 and the first sub-cavity 1105. Part of the intermediate tooth 173 is located in the connecting hole 1110, and the intermediate tooth 173 is drively connected to the first tooth 171 and the second tooth 172. The intermediate tooth 173 in the transmission component 17 can adjust the rotational speed or torque of the valve core 13, thereby improving the adaptability of the fluid management device 10.

[0044] Please see Figure 5 The second housing 112 includes a first sub-part 1121 and a second sub-part 1122, wherein the wall forming the second receiving cavity 1102 also includes the inner wall of the first sub-part 1121, the first opening 1001 is located in the first sub-part 1121, the first sub-part 1121 is sealed to the first body 1111, and the wall forming the first sub-cavity 1105 includes the inner wall of the second sub-part 1122. The second sub-part 1122 is sealed to the second main body 1112. In this embodiment, the first sub-part 1121 and the second sub-part 1122 are an integral structure. The second housing 112 includes a first sealing section 1127, which is located between the first sub-part 1121 and the second sub-part 1122 along a first direction. The second main body 1112 or the first main body 1111 includes a second sealing section 1108, which is closer to the second housing 112 than the connecting hole 1110 along the axial direction of the first rotor 142. The first sealing section 1127 and the second sealing section 1108 are sealed to each other. In this embodiment, the second housing 112 and the first housing 111 are fixed by bolts, which will not be described in detail. In another embodiment, the first sub-part 1121 and the second sub-part 1122 are separately disposed, wherein the first sub-part 1121 is sealed to the first end of the first main body 1111, and the second sub-part 1122 is sealed to the first end of the second main body 1112. In this embodiment, the sealing method includes welding sealing, adhesive sealing or threaded sealing, and a sealing ring may also be provided to enhance the sealing.

[0045] Please see Figures 5-7The first body 1111 includes a second isolation portion 1114. The housing 11 has a circuit board receiving cavity 1104. Specifically, the wall forming the circuit board receiving cavity 1104 includes the wall of the first body 1111. One side wall of the second isolation portion 1114 is the bottom wall of the first receiving cavity 1101, and the other side wall of the second isolation portion 1114 is the bottom wall of the circuit board receiving cavity 1104. The second isolation portion 1114 relatively isolates the first receiving cavity 1101 and the circuit board receiving cavity 1104. The circuit board is located in the circuit board receiving cavity 1104 along the axial direction of the first rotor 142. The circuit board is located on one side of the second isolation portion 1114, and the stator assembly 141 is located on the other side of the second isolation portion 1114. The circuit board is electrically connected or signal connected to the stator assembly 141, and the circuit board provides control signals to the stator assembly 141. The housing 11 includes a third housing 113, which includes a third sub-part 1131 and a fourth sub-part 1132. The wall forming the circuit board receiving cavity 1104 also includes the inner wall of the third sub-part 1131, and the wall forming the valve cavity 1106 includes the inner wall of the fourth sub-part 1132. The third sub-part 1131 and the fourth sub-part 1132 are integrally formed or separately disposed. The third sub-part 1131 is sealed to the second end of the first main body 1111, and the fourth sub-part 1132 is sealed to the second end of the second main body 1112. In this embodiment, the third housing 113 and the first housing 111 are fixed by bolts.

[0046] The first port 1001 and the fourth port 1004 are formed in the second housing 112, and the third port 1003, the second port 1002, and the fifth port 1005 are formed in the second body 1112. The fluid management device 10 has a first channel. In one specific embodiment, the first channel is located in a connecting pipe, which connects the fourth port 1004 and the second port 1002. Thus, the second receiving cavity 1102, which houses the impeller 12, is connected to the third receiving cavity 1103, which houses the valve core 13. When the fluid management device 10 is working, the fluid enters the second receiving cavity 1102 through the first port 1001. Driven by the impeller 12, the fluid enters the third receiving cavity 1103, or valve cavity 1106, through the first channel in the connecting pipe from the second receiving cavity. The valve core 13 rotates, causing the fluid to flow out of the fluid management device 10 through the third port 1003 and / or the fifth port 1005. This makes the fluid management device 10 more integrated.

[0047] In another specific embodiment, the housing 11 has a first channel (not shown). In this case, the fluid management device 10 may not have a fourth port 1004 and a fifth port 1005. The first channel has an opening in the wall forming the second receiving cavity 1102. The impeller 12 is located in the second receiving cavity 1102. The first channel has an opening in the wall forming the third receiving cavity 1103, or in other words, an opening in the wall forming the valve cavity 1106. The valve core 13 is located in the third receiving cavity 1103. The first channel connects the second receiving cavity 1102 and the third receiving cavity 1103. The valve core 13 enables at least one of the third port 1003 and the second port 1002 to communicate with the first channel. In this embodiment, the first port 1001 is an inlet of the fluid management device 10. Fluid can enter the third receiving cavity 1103 from the second receiving cavity 1102. Under the action of the valve core 13, fluid can flow out from the second port 1002 and / or from the third port 1003. Compared to the above embodiments, the first channel is built into the housing 11, which can reduce the volume of the fluid management device 10, reduce leakage, and also reduce installation steps.

[0048] Please see Figures 8-14In this embodiment, the first actuating element is an impeller 22, and the second actuating element is a valve core 23. Specifically, the fluid management device 20 includes a housing 21, a motor assembly 24, an impeller 22, and a valve core 23. The motor assembly 24 includes a stator assembly 241, a first rotor 242, and a second rotor 243. The stator assembly 241 enables the first rotor 242 to rotate and enables the second rotor 243 to rotate. The first rotor 242 is drivenly connected to the impeller 22, and the second rotor 243 is drivenly connected to the valve core 23. The fluid management device 20 has a first receiving cavity 2101, a second receiving cavity 2102, and a third receiving cavity 2103. The first receiving cavity 2101, the second receiving cavity 2102, and the third receiving cavity 2103 are located within the housing 21. At least a portion of the motor assembly 24 is located in the first receiving cavity 2101. Impeller 22 is located in the second receiving cavity 2102, and valve core 23 is located in the third receiving cavity 2103. Along the axial direction of the first rotor 242, impeller 22 is located on one side of motor assembly 24, and valve core 23 is located on the other side of motor assembly 24. Impeller 22 and valve core 23 are located on different sides of motor assembly 24. In this embodiment, fluid management device 20 has a first port 2001, a second port 2002, a third port 2003, a fourth port 2004, and a fifth port 2005. The first port 2001 and the fourth port 2004 are respectively connected to the second receiving cavity 2102. The second port 2002, the third port 2003, and the fifth port 2005 are connected to the third receiving cavity 2103. Valve core 23 enables at least one of the third port 2003 and the second port 2002 to be connected to the fifth port 2005. The stator assembly 241 of the fluid management device 20 can respectively drive the first rotor 242 and the second rotor 243. The first rotor 242 and the second rotor 243 are respectively connected to the impeller 22 and the valve core 23. Along the axial direction of the first rotor 242, the impeller 22 and the valve core 23 are located on different sides of the stator assembly 241. The impeller 22 and the valve core 23 of the fluid management device 20 are reasonably arranged and have a compact structure, which is conducive to the miniaturization of the fluid management device 20.

[0049] The housing 21 includes a first housing 211, a second housing 212, and a third housing 213. The second housing 212 is sealed to the first end of the first housing 211, and the wall forming the second receiving cavity 2102 includes the inner wall of the second housing 212. The third housing 213 is sealed to the second end of the first housing 211, and the wall forming the third receiving cavity 2103 includes the inner wall of the third housing 213. Alternatively, along the axial direction of the first rotor 242, at least a portion of the second housing 212 is located on one side of the first housing 211, and at least a portion of the third housing 213 is located on the other side of the first housing 211. The second housing 212 and the third housing 213 are located on different sides of the first housing 211. In this embodiment, the first port 2001 and the fourth port 2004 are located in the second housing 212, and the second port 2002, the third port 2003, and the fifth port 2005 are located in the first housing 211. The first housing 211 and the second housing 212 are fixedly connected by bolts, and the first housing 211 and the third housing 213 are fixedly connected by bolts.

[0050] In this embodiment, the first housing 211 includes a first isolation portion 2113, a first main body 2111, and a second main body 2112, which are distributed along the axial direction of the first rotor 242. In one specific embodiment, the first isolation portion 2113, the first main body 2111, and the second main body 2112 are integrally formed, which provides the advantages of convenient installation and reduced leakage. In another embodiment, the first isolation portion 2113, the first main body 2111, and the second main body 2112 are separate structures, wherein the first isolation portion 2113 is sealed to the end of the first main body 2111 that is relatively far from the impeller 22, and the end of the second main body 2112 that is relatively close to the impeller 22 is sealed to the first isolation portion 2113. Of course, the second main body 2112 can also be sealed to one end of the first main body 2111. This first housing 211 has the advantage of simple processing. Alternatively, the first isolation part 2113 can be integrally formed with one of the first main body 2111 and the second main body 2112, while the first main body 2111 and the second main body 2112 are separate structures, and the first isolation part 2113 is sealed to the other one.

[0051] Along the axial direction of the first rotor 242, the first receiving cavity 2101 is located on one side of the first isolation part 2113, and the third receiving cavity 2103 is located on the other side of the first isolation part 2113. The first receiving cavity 2101 and the third receiving cavity 2103 are located on different sides of the first isolation part 2113, wherein the third receiving cavity 2103 includes a valve cavity. Specifically, the first receiving cavity 2101 has an opening facing away from the first isolation portion 2113 in the first body 2111, or in other words, the first receiving cavity 2101 has an opening facing the impeller 22 in the first body 2111. The wall forming the first receiving cavity 2101 includes the first side wall of the first isolation portion 2113 and the inner wall of the first body 2111, wherein the first side wall of the first isolation portion 2113 is the bottom wall of the first receiving cavity 2101. The third receiving cavity 2103 has an opening facing away from the first isolation portion 2113 in the second body 2112, or in other words, the third receiving cavity 2103 has an opening facing the valve core 23 in the second body 2112. The wall forming the third receiving cavity 2103 includes the second side wall of the first isolation portion 2113 and the inner wall of the second body 2112, wherein the second side wall of the first isolation portion 2113 is the bottom wall of the third receiving cavity 2103.

[0052] Please see Figure 13 The fluid management device 20 includes a first shaft 261, a first isolation portion 2113 having a first receiving hole, the first shaft 261 being fixedly connected or limited to a second rotor 243, and the first shaft 261 being fixedly connected, limited to, or driven by a valve core 23. Specifically, a portion of the first shaft 261 is located in the first receiving hole of the first isolation portion 2113, and the first shaft 261 is sealed to the wall of the first receiving hole. One end of the first shaft 261 is integrally structured with, fixedly connected to, or limited to the second rotor 243, and the other end of the first shaft 261 is located in a third receiving cavity 2103, and is fixedly connected, limited to, or driven by the valve core 23 located in the third receiving cavity 2103. In one specific embodiment, the valve core 23 has an assembly portion, which is fixedly connected or limited to the first shaft 261. In this case, the first shaft 261 and the valve core 23 are directly connected, so the rotation of the valve core 23 is relatively synchronized with the second rotor 243, and the adjustment of the valve core 23's rotation is relatively simple. In yet another specific embodiment, please refer to... Figure 14The third receiving cavity 2103 includes a first sub-cavity 2105 and a valve cavity 2106. The wall forming the first sub-cavity 2105 includes the second sidewall of the second isolation portion 2114. Specifically, the first housing 211 includes the second isolation portion 2114. The second isolation portion 2114 has a receiving hole for receiving a portion of the second shaft 262, and the second shaft 262 is sealed to the wall of the receiving hole of the second isolation portion 2114. Along the axial direction of the second shaft 262, the first sub-cavity 2105 is located on one side of the second isolation portion 2114, and the valve cavity 2106 is located on the opposite side of the second isolation portion 2114. At least a portion of the transmission component 27 is located in the first sub-cavity 2105. The transmission component 27 includes an intermediate tooth 273, a first tooth 271, and a second tooth 272. The first tooth 271 is fixedly connected to or limited by the first shaft 261, and the second tooth 272 is fixedly connected to or limited by the second shaft 262. The intermediate tooth 273 is driven by the first tooth 271 and the second tooth 272. The intermediate tooth 273 in the transmission component 27 can adjust the rotational speed or torque of the valve core 23, thereby improving the adaptability of the fluid management device 20. In other embodiments, the fluid management device 20 further includes a transmission component 27 and a second shaft 262. The second shaft 262 is fixedly connected or limitedly connected to the assembly portion of the valve core 23. The transmission component 27 is located in the third receiving cavity 2103. The transmission component 27 includes a first tooth 271 and a second tooth 272. The first tooth 271 is fixedly connected or limitedly connected to the first shaft 261, and the second tooth 272 is fixedly connected or limitedly connected to the second shaft 262. The first tooth 271 and the second tooth 272 mesh, and at this time, the first tooth 271 and the second tooth 272 are directly connected in a transmission manner, i.e., with... Figure 14 Compared with the previous implementation, the main difference is that the intermediate tooth 273 is not included.

[0053] Please see Figure 13The fluid management device 20 includes an isolation sleeve 25, which isolates the first rotor 242 from the second rotor 243 and the stator assembly 241. In other words, the isolation sleeve 25 prevents the cavity containing the first rotor 242 from communicating with the cavity containing the stator. Specifically, at least a portion of the isolation sleeve 25 is located in the first receiving cavity 2101, at least a portion of the first rotor 242 is located on the inner periphery of the isolation sleeve 25, and the stator assembly 241 and the second rotor 243 are located on the outer periphery of the isolation sleeve 25. The isolation sleeve 25 is sealed to the first body 2111. More specifically, the isolation sleeve 25 includes an ear portion 251 and a main body portion 252. The main body portion 252 is located in the first receiving cavity 2101 and has a recess, in which the first rotor 242 is located. The opening of the recess faces the impeller 22. The ear portion 251 extends radially from the opening of the recess of the main body portion 252 along the first receiving cavity 2101. The ear portion 251 is sealed to the inner wall of the first main body 2111. In this way, the fluid in the second receiving cavity 2102 cannot enter the cavity where the stator assembly 241 is located, preventing the fluid from damaging the stator assembly 241 and improving the life of the fluid management device 20.

[0054] Please see Figure 11 The fluid management device 20 may further include a circuit board 28, which is electrically and / or signal-connected to the stator assembly 241. The housing 21 includes a fourth housing 214 with a circuit board receiving cavity 2104. The walls forming the circuit board receiving cavity 2104 include the sidewalls of the first housing 211 and the inner wall of the fourth housing 214. The first housing 211 and the fourth housing 214 are fixedly connected or mutually restrictive. The circuit board is located in the circuit board receiving cavity 2104. This design makes the fluid management device 20 relatively compact and facilitates miniaturization. Of course, the fluid management device 20 may also not include a circuit board.

[0055] In this embodiment, the fluid management device 20 may also include a connecting portion having a first channel. The connecting portion is used to connect the third port 2003 and the fourth port 2004. In this way, the second receiving cavity 2102 that houses the impeller 22 is connected to the third receiving cavity 2103 that houses the valve core 23. When the fluid management device 20 is working, the fluid enters the second receiving cavity 2102 through the first port 2001. Driven by the impeller 22, the fluid enters the third receiving cavity 2103 through the first channel from the second receiving cavity 2102. The valve core 23 rotates, causing the fluid to flow out of the fluid management device 20 through the third port 2003 and / or the fifth port 2005. This makes the fluid management device 20 more integrated.

[0056] Please see Figures 15-24In this embodiment, the first actuating element is a first impeller 32, and the second actuating element is a second impeller 33. Specifically, the fluid management device 30 includes a housing 31, a motor assembly 34, a first impeller 32, and a second impeller 33. The fluid management device 30 has a first receiving cavity 3101, a second receiving cavity 3102, and a third receiving cavity 3103. The first receiving cavity 3101, the second receiving cavity 3102, and the third receiving cavity 3103 are located within the housing 31. At least a portion of the motor assembly 34 is located in the first receiving cavity 3101, the first impeller 32 is located in the second receiving cavity 3102, and the second impeller 33 is located in the third receiving cavity 3103. Along the first rotor 3... Along the axial direction of 42, the first impeller 32 is located on one side of the stator assembly 341, and the second impeller 33 is located on the opposite side of the stator assembly 341. Alternatively, the second receiving cavity 3102 is located on one side of the first receiving cavity 3101, and the third receiving cavity 3103 is located on the other side of the first receiving cavity 3101. The motor assembly 34 includes the stator assembly 341, the first rotor 342, and the second rotor 343. Along the radial direction of the first receiving cavity 3101, at least a portion of the first rotor 342 and at least a portion of the second rotor 343 are located within the inner circumference of the stator assembly 341. When the fluid management device 30 is in operation, the stator assembly 341 enables the first rotor 342 to rotate, and the stator assembly 341 enables the second rotor 343 to rotate. The first rotor 342 is drivenly connected to the first impeller 32, thereby enabling the fluid to flow within the second receiving cavity 3102. The second rotor 343 is drivenly connected to the second impeller 33, thereby enabling the fluid to flow within the third receiving cavity 3103. The fluid management device 30 has a first port 3001, a second port 3002, a third port 3003, and a fourth port 3004. The first port 3001 and the fourth port 3004 are connected to a second receiving cavity 3102, and the second port 3002 and the third port 3003 are connected to a third receiving cavity 3103. When the fluid management device 30 is in operation, one of the first port 3001 and the fourth port 3004 serves as an inlet to the fluid management device 30, and the other serves as an outlet. Similarly, one of the second port 3002 and the third port 3003 serves as the other inlet to the fluid management device 30, and the other serves as the other outlet. The stator assembly 341 of the fluid management device 30 can respectively actuate the first rotor 342 and the second rotor 343. The first rotor 342 and the second rotor 343 are respectively connected to the first impeller 32 and the second impeller 33. In other words, the fluid management device 30 can respectively control the actuation of the first impeller 32 and the second impeller 33, realizing the integration of two pumps and having the advantage of high integration. In addition, along the axial direction of the first rotor 342, the first impeller 32 and the second impeller 33 are located on different sides of the stator assembly 341. Such a fluid management device 30 has a reasonable layout and compact structure, which is conducive to the miniaturization of the fluid management device 30.

[0057] Please see Figures 15-17 The housing 31 includes a first housing 311, a second housing 312, and a third housing 313. Along the axial direction of the first rotor 342, at least a portion of the second housing 312 is located on one side of the first housing 311, and at least a portion of the third housing 313 is located on the other side of the first housing 311. The second housing 312 is fixedly connected to the first housing 311 or is limitedly connected to it, and the third housing 313 is fixedly connected to the first housing 311 or is limitedly connected to it. The connection method includes bonding, welding, bolting, or threaded connection. In this embodiment, the connection method is bolting. The wall forming the first receiving cavity 3101 includes the inner wall of the first housing 311. The first receiving cavity 3101 has an opening facing the second housing 312 in the first housing 311. The first receiving cavity 3101 has an opening facing the third housing 313 in the first housing 311. At least a portion of the motor assembly 34 is located in the first receiving cavity 3101. The wall forming the second receiving cavity 3102 includes the second housing 312. The wall forming the third receiving cavity 3103 includes the third housing 313. The first opening 3001 and the second opening 3002 are formed in the second housing 312. The third opening 3003 and the fourth opening 3004 are formed in the third housing 313. Of course, the first opening 3001, the second opening 3002, the third opening 3003 and the fourth opening 3004 may also be located in a tube that is fixedly connected or limited to the housing 31, which will not be described in detail.

[0058] Please see Figure 24 For details on the fit between the isolation sleeve 35 and the housing, please refer to [link / reference]. Figure 19The fluid management device 30 includes an isolation sleeve 35. In one specific embodiment, the isolation sleeve 35 is made of a soft material, which facilitates the installation of the isolation sleeve 35. The isolation sleeve 35 is used to prevent the cavity where the stator assembly 341 is located from communicating with the cavities where the first rotor 342 and the second rotor 343 are located. Specifically, the isolation sleeve 35 includes a first sub-part 3501, a second sub-part 3502, and a third sub-part 3503. The first sub-part 3501, the second sub-part 3502, and the third sub-part 3503 are an integral structure. The second sub-part 3502 is a hollow cylindrical shape. The first sub-part 3501 extends radially from one end of the second sub-part 3502 along the first receiving cavity 3101. The third sub-part 3503 extends radially from the other end of the second sub-part 3502 along the first receiving cavity 3101. The second sub-part 3502 extends axially from the first sub-part 3501 to the third sub-part 3503 along the first receiving cavity 3101. At least a portion of the second sub-part 3502 is located in the first receiving cavity 3101. The stator assembly 341 is located on the outer periphery of the second sub-part 3502. The first rotor 342 and the second rotor 343 are located on the inner periphery of the second sub-part 3502. In another embodiment, the isolation sleeve 35 includes a first sub-component 3510 and a second sub-component 3520, which are separate structures. The first sub-component 3510 includes a first sub-part 3501 and a portion of a second sub-part 3502. The second sub-component 3520 includes a third sub-part 3503 and another portion of a second sub-part 3502. The portion of the second sub-part 3502 is sealed to the other portion of the second sub-part 3502. The sealing method includes threaded connection, adhesive bonding, or a sealing ring between the two parts to enhance the seal. When installing the isolation sleeve 35, either the first sub-component or the second sub-component 3520 is installed first, and then the second sub-component 3520 and the first sub-component 3510 are sealed together. Along the axial direction of the first rotor 342, the first sub-part 3501 is located between the first housing 311 and the second housing 312. The first housing 311 and the second housing 312 are fixed together by bolts, thereby pressing the first sub-part 3501 to achieve a sealed connection between the first sub-part 3501 and the first housing 311 and the second housing 312. The third sub-part 3503 is located between the first housing 311 and the third housing 313. The first housing 311 and the third housing 313 are fixed together by bolts, thereby pressing the second sub-part 3502 to achieve a sealed connection between the third sub-part 3503 and the first housing 311 and the third housing 313.

[0059] In another implementation, please refer to Figures 19-23The fluid management device 30 includes two isolation sleeves, namely a first isolation sleeve 351 and a second isolation sleeve 352. The first isolation sleeve 351 includes a first sub-part 3501 and a first cylindrical part 3511. The first cylindrical part 3511 has a bottom at one end away from the first sub-part 3501 and is open at the other end, with the opening facing the first impeller 32. The first rotor 342 is located on the inner periphery of the first cylindrical part 3511, and the stator assembly 341 and the second isolation sleeve 352 are located on the outer periphery of the first cylindrical part 3511. The first sub-part 3501 is sealed to the first housing 311 and the second housing 312. The second isolation sleeve 352 includes a second sub-part 3502, a second cylindrical part 3521, and a third cylindrical part 3522. The second sub-part 3502, the second cylindrical part 3521, and the third cylindrical part 3522 are integral structures. The second cylindrical part 3521 has an opening at one end near the first sub-part 3501 and a bottom. The first cylindrical part 3511 is located on the inner circumference of the second cylindrical part 3521, and the second cylindrical part 3521 is located on the inner circumference of the third cylindrical part 3522. The opening of the third cylindrical part 3522 faces the second impeller 33. The opening of the second cylindrical part 3521 is opposite to the opening of the third cylindrical part 3522. Along the radial direction of the first receiving cavity 3101, at least a portion of the second rotor 343 is located between the second cylindrical part 3521 and the third cylindrical part 3522. The second sub-part 3502 is sealed to the first housing 311 and the third housing 313. The fluid management device 30 includes a first isolation sleeve 351 and a second isolation sleeve 352, which facilitates the installation of the isolation sleeve 35 and can also enhance the sealing performance.

[0060] Please see Figure 16 In this embodiment, the circuit board 38 of the fluid management device 30 is electrically or signal-connected to the stator assembly 341. The housing 31 includes a fourth housing 314, which has a circuit board receiving cavity 3104. The circuit board is located in the circuit board receiving cavity 3104. The walls forming the circuit board receiving cavity 3104 include the sidewalls of the first housing 311 and the walls of the fourth housing 314. The first housing 311 is fixedly connected to or limited by the third housing 313. This makes the structure of the fluid management device 30 relatively compact, which is beneficial for miniaturization. Of course, the fluid management device 30 may also not include a circuit board, which will not be described in detail here.

[0061] Please see Figures 25-29In this embodiment, the first actuating element is the second valve core 43, and the second actuating element is the first valve core 42. Specifically, the fluid management device 40 includes a housing 41, a motor assembly 44, a first valve core 42, and a second valve core 43. The motor assembly 44 includes a stator assembly 441, a first rotor 442, and a second rotor 443. The stator assembly 441 enables the first rotor 442 to rotate and enables the second rotor 443 to rotate. The first rotor 442 is driveably connected to the second valve core 43, and the second rotor 443 is driveably connected to the first valve core 42. The fluid management device 40 has a first receiving cavity 4101, a second receiving cavity 4102, and a third receiving cavity 4103. The first receiving cavity 4101, the second receiving cavity 4102, and the third receiving cavity 4103 are located within the housing. At least a portion of the motor assembly 44 is located in the first receiving cavity 4101, and the first valve core 42 is located in the third receiving cavity. The first rotor 442 has a first valve core 43 located in the second receiving cavity 4102. Along the axial direction of the first rotor 442, the first valve core 42 is located on one side of the stator assembly 441, and the second valve core 43 is located on the opposite side of the stator assembly 441. The fluid management device 40 includes a first port 4001, a second port 4002, a third port 4003, a fourth port 4004, a fifth port 4005, and a sixth port 4006. The first port 4001, the fourth port 4004, and the sixth port 4006 can communicate with the second receiving cavity 4102. The second port 4002, the third port 4003, and the fifth port 4005 can communicate with the third receiving cavity 4103. The second valve core 43 can connect at least one of the fourth port 4004 and the sixth port 4006 to the first port 4001. The first valve core 42 can connect at least one of the third port 4003 and the fifth port 4005 to the second port 4002. The stator assembly 441 of the fluid management device 40 can respectively actuate the first rotor 442 and the second rotor 443. The second rotor 443 and the first rotor 442 are respectively connected to the first valve core 42 and the second valve core 43. The stator assembly 441 of the fluid management device 40 can respectively control the actuation of the first valve core 42 and the second valve core 43, which has the advantage of high integration. Along the axial direction of the first rotor 442, the first valve core 42 and the second valve core 43 are located on different sides of the stator assembly 441. This arrangement of the first valve core 42 and the second valve core 43 in the fluid management device 40 is reasonable, facilitates the assembly of the first valve core 42 and the second valve core 43, has a compact structure, and is conducive to the miniaturization of the fluid management device 40.

[0062] Please see Figures 24-26 as well as Figure 29The housing 41 includes a first housing 411, and the wall forming the first receiving cavity 4101 includes the first housing 411. The housing 41 includes a first isolation portion 4113 and a second isolation portion 4114. The first isolation portion 4113 isolates the first receiving cavity 4101 and the third receiving cavity 4103 relative to each other. The second isolation portion 4114 isolates the first receiving cavity 4101 and the second receiving cavity 4102 relative to each other. Along the axial direction of the first rotor 442, the third receiving cavity 4103 is located on one side of the first isolation portion 4113, the first receiving cavity 4101 is located on the opposite side of the first isolation portion 4113, the first receiving cavity 4101 is located on one side of the second isolation portion 4114, and the second receiving cavity 4102 is located on the opposite side of the second isolation portion 4114. In other words, the first receiving cavity 4101 is located between the first isolation portion 4113 and the second isolation portion 4114. The first housing 411 includes a first body 4111, a second body 4112, and a third body 4117. These three bodies are distributed along the axial direction of the first rotor 442. The second body 4111 is located on one side of the first body 4111, and the third body 4117 is located on the other side of the first body 4111. At least a portion of the first receiving cavity 4101 is located in the first body 4111, and at least a portion of the third receiving cavity 4103 is located in the second body 4112. The second receiving cavity 4102 is located within the third body 4117. The wall forming the first receiving cavity 4101 includes the first side wall of the first isolation portion 4113 and the second side wall of the second isolation portion 4114. The second receiving cavity 4102 has an opening facing away from the second isolation portion 4114, and the wall forming the second receiving cavity 4102 includes the second side wall of the second isolation portion 4114. The third receiving cavity 4103 has an opening facing away from the first isolation portion 4113, and the wall forming the third receiving cavity 4103 includes the second side wall of the first isolation portion 4113. In one specific embodiment, the first isolation portion 4113, the first body 4111, and the second body 4112 are integrally formed, and the third body 4117 is integrally formed with or sealed to the second isolation portion 4114. The second isolation portion 4114 or the third body 4117 is sealed to the first body 4111. The first body 4111 has a first receiving cavity 4101, the second body 4112 has a second receiving cavity 4102, and the third body 4117 has a third receiving cavity 4103. The wall forming the first receiving cavity 4101 includes a first side wall of the first isolation portion 4113 and a second side wall of the second isolation portion 4114. The second receiving cavity 4102 has an opening facing away from the first isolation portion 4113, and the wall forming the second receiving cavity 4102 includes the second side wall of the first isolation portion 4113. The third receiving cavity 4103 has an opening facing away from the second isolation portion 4114, and the wall forming the third receiving cavity 4103 includes the second side wall of the second isolation portion 4114.The first isolation section 4113, the first main body 4111, and the second main body 4112 are integrated into one structure, which facilitates assembly and reduces leakage.

[0063] The housing 41 further includes a second housing 412, a third housing 413, and a fourth housing 414. The second housing 412 is sealed to one end of the third body 4117, and the wall forming the second receiving cavity 4102 includes the inner wall of the second housing 412. The third housing 413 is sealed to one end of the second body 4112, and the wall forming the third receiving cavity 4103 includes the inner wall of the third housing 413. The housing 41 has a circuit board receiving cavity 4104, and the wall forming the circuit board receiving cavity 4104 includes the side wall of the first housing 411 and the fourth housing 414. The first housing 411 and the fourth housing 414 are sealed to each other. The fluid management device 40 includes a circuit board 48, which is located in the circuit board receiving cavity 4104. The circuit board 48 is electrically or signal-connected to the stator assembly 441. The first opening 4001, the fourth opening 4004, and the sixth opening 4006 are formed on the third body 4117, while the second opening 4002, the third opening 4003, and the fifth opening 4005 can be formed on the second body 4112.

[0064] Please see Figure 29 The fluid management device 40 includes a first shaft 461 and a second shaft 462. In this embodiment, one end of the first shaft 461 is fixedly connected or limitedly connected to the first assembly part of the first valve core 42. The wall forming the third receiving cavity 4103 includes the wall of the first isolation part 4113 and the inner wall of the third housing 413. The first isolation part 4113 has a first receiving hole. Part of the first shaft 461 is located in the first receiving hole of the first isolation part 4113. The first shaft 461 is sealed to the wall of the first receiving hole. The other end of the first shaft 461 is integrally structured, fixedly connected, or limitedly connected to the second rotor 443. Thus, when the second rotor 443 rotates, the second rotor 443 can drive the first valve core 42 to move. One end of the second shaft 462 is fixedly connected or limited to the second assembly part of the second valve core 43, forming the wall of the second receiving cavity 4102, which includes the wall of the second isolation part 4114 and the inner wall of the second housing 412. The second isolation part 4114 has a second receiving hole, and part of the second shaft 462 is located in the second receiving hole of the second isolation part 4114. The second shaft 462 is sealed to the wall of the second receiving hole. The other end of the second shaft 462 is fixedly connected, limited to, or integrally formed with the first rotor 442. Thus, when the first rotor 442 rotates, the first rotor 442 can drive the second valve core 43 to move.

[0065] The fluid management device 40 may further include a first transmission component 47, a first valve stem 463, and a third isolation portion 4115. In this embodiment, the first valve stem 463 is fixedly connected or limitedly connected to the first assembly portion of the first valve core 42. The third receiving cavity 4103 includes a first sub-cavity 4105 and a first valve cavity 4106. Along the axial direction of the first valve stem 463, the first sub-cavity 4105 is located on one side of the third isolation portion 4115, and the first valve cavity 4106 is located on the opposite side of the third isolation portion 4115. At least part The first transmission component 47 is located in the first sub-cavity 4105. The first transmission component 47 includes a first tooth 471 and a second tooth 472. The first tooth 471 is fixedly connected to or limited to the first shaft 461, and the second tooth 472 is fixedly connected to or limited to the first valve stem 463. The first tooth 471 and the second tooth 472 are directly or indirectly connected for transmission. The first transmission component 47 is provided to facilitate the adjustment of the speed and torque of the valve core. The transmission component may further include an intermediate tooth, which will not be described in detail here.

[0066] Similarly, the fluid management device 40 also includes a second transmission component 49, a second valve stem 464, and a fourth isolation portion 4116. In this embodiment, the second valve stem 464 is fixedly connected or limitedly connected to the second assembly portion. The second receiving cavity 4102 includes a second sub-cavity 4106 and a second valve cavity 4107. Along the axial direction of the second valve stem 464, the second sub-cavity 4106 is located on one side of the fourth isolation portion 4116, and the second valve cavity 4107 is located on the opposite side of the fourth isolation portion 4116. The fluid management device 40 includes a second transmission component. 49. At least a portion of the second transmission component 49 is located in the second sub-cavity 4106. The second transmission component 49 includes a third tooth 491 and a fourth tooth 492. The third tooth 491 is fixedly connected to or limited by the second shaft 462, and the fourth tooth 492 is fixedly connected to or limited by the second valve stem 464. The third tooth 491 and the fourth tooth 492 are directly or indirectly connected by transmission. The second transmission component 49 is provided to facilitate the adjustment of the valve core's rotational speed and torque. The transmission component may further include another intermediate tooth, which will not be described in detail here.

[0067] In other embodiments, the first isolation portion 4113, the first main body 4111, and the second main body 4112 are separate structures. The first isolation portion 4113 is sealed to the end of the first main body 4111 that is relatively away from the first valve core 42. The second main body 4112 is sealed to the first isolation portion 4113 or to the end of the first main body 4111 that is relatively away from the second valve core 43. The second isolation portion 4114 is integrally structured with at least one of the first main body 4111 and the third main body 4117. This can reduce installation steps and reduce leakage.

[0068] In addition, the first main body 4111 and the second main body 4112 are separate structures, the first isolation part 4113 is integral with one of the first main body 4111 and the first main body 4111, the first isolation part 4113 is sealed to the other one, and the second isolation part 4114 is sealed to the first main body 4111 and the third main body 4117 respectively. This can reduce the installation steps and reduce leakage.

[0069] 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. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to the present invention. All technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. A fluid management device, comprising a housing, a motor assembly, an impeller, and a valve core, wherein the motor assembly includes a stator assembly, a first rotor, and a second rotor, the stator assembly being rotatable of the first rotor and the second rotor, the first rotor being driveably connected to the impeller, and the second rotor being driveably connected to the valve core, the fluid management device having a first receiving cavity, a second receiving cavity, and a third receiving cavity, the first receiving cavity, the second receiving cavity, and the third receiving cavity being located within the housing, at least a portion of the motor assembly being located in the first receiving cavity, the impeller being located in the second receiving cavity, and the valve core being located in the third receiving cavity; The fluid management device has a first port, a second port, a third port, a fourth port, and a fifth port. The first port and the fourth port are respectively connected to the second receiving cavity. The second port, the third port, and the fifth port are connected to the third receiving cavity. The valve core is capable of connecting at least one of the third port and the second port to the fifth port. Along the axial direction of the first rotor, the impeller is located on one side of the motor assembly, and the valve core is located on the other side of the motor assembly. The impeller and the valve core are located on different sides of the motor assembly.

2. The fluid management device according to claim 1, characterized in that, The housing includes a first housing, the first housing includes a first isolation portion, a first receiving cavity having an opening in the first housing facing the impeller along the axial direction of the first rotor, the first receiving cavity being located on one side of the first isolation portion, and a third receiving cavity being located on the other side of the first isolation portion, the first receiving cavity and the third receiving cavity being located on different sides of the first isolation portion; The fluid management device includes a first shaft, which is fixedly connected, limited, or driven to the second rotor, and is also fixedly connected or limited to the valve core.

3. The fluid management device according to claim 2, characterized in that, The valve core includes an assembly portion, and the first isolation portion has a first receiving hole; The assembly part is fixedly connected or limited to the first shaft, one end of the first shaft is fixedly connected or limited to the second rotor, the wall forming the third receiving cavity includes the wall of the first isolation part, and part of the first shaft is located in the first receiving hole of the first isolation part; Alternatively, the fluid management device includes a second shaft, which is fixedly or limitingly connected to the assembly part; the third receiving cavity includes a first sub-cavity and a valve cavity; the wall forming the first sub-cavity includes the wall of the first isolation part; the first housing includes a second isolation part, which has a receiving hole for receiving a portion of the second shaft; along the axial direction of the second shaft, the first sub-cavity is located on one side of the second isolation part, and the valve cavity is located on the opposite side of the second isolation part. The fluid management device includes a transmission component, at least a portion of which is located in the first sub-cavity. The transmission component includes a first tooth and a second tooth. The first tooth is fixedly connected to or limited by the first shaft, and the second tooth is fixedly connected to or limited by the second shaft. The first tooth and the second tooth are directly or indirectly connected in a transmission manner.

4. The fluid management device according to claim 2 or 3, characterized in that, The first housing includes a first body and a second body, which are distributed along the axial direction of the first rotor. The first body and the second body are distributed along the axial direction of the first rotor. The first receiving cavity has an opening in the first body facing the impeller. At least a portion of the second receiving cavity is located in the second body. The wall forming the first receiving cavity includes a first sidewall of the first isolation portion and an inner wall of the first body. The second receiving cavity has an opening facing away from the first isolation portion. The wall forming the second receiving cavity includes a second sidewall of the first isolation portion and an inner wall of the second body.

5. The fluid management device according to claim 4, characterized in that, The first isolation section, the first main body, and the second main body are integrally structured. Alternatively, the first isolation section, the first main body, and the second main body are separate structures; The first isolation portion is sealed to the end of the first body that is relatively away from the impeller, and the second body is sealed to the first isolation portion, or the second body is sealed to one end of the first body; Alternatively, the first body and the second body are separate structures, the first isolation part is integral with one of the first body and the first body, and the first isolation part is sealed to the other one.

6. The fluid management device according to any one of claims 1-3 and 5, characterized in that, The housing includes a first housing, a second housing, and a third housing. The first housing includes a first body and a second body. Along the axial direction of the first rotor, at least a portion of the second housing is located on one side of the first housing, and at least a portion of the third housing is located on the other side of the first housing. The second housing is sealed to one end of the first body, and the wall forming the second receiving cavity includes the inner wall of the second housing. The third housing is sealed to one end of the second body, and the wall forming the third receiving cavity also includes the inner wall of the third housing.

7. The fluid management device according to claim 4, characterized in that, The housing includes a first housing, a second housing, and a third housing. The first housing includes a first body and a second body. Along the axial direction of the first rotor, at least a portion of the second housing is located on one side of the first housing, and at least a portion of the third housing is located on the other side of the first housing. The second housing is sealed to one end of the first body, and the wall forming the second receiving cavity includes the inner wall of the second housing. The third housing is sealed to one end of the second body, and the wall forming the third receiving cavity also includes the inner wall of the third housing.

8. The fluid management device according to claim 6, characterized in that, The fluid management device includes an isolation sleeve, at least a portion of which is located in the first receiving cavity, at least a portion of which is located on the inner periphery of the isolation sleeve, and the stator assembly and the second rotor are located on the outer periphery of the isolation sleeve; the isolation sleeve is sealed to the first body.

9. The fluid management device according to claim 7, characterized in that, The fluid management device includes an isolation sleeve, at least a portion of which is located in the first receiving cavity, at least a portion of which is located on the inner periphery of the isolation sleeve, and the stator assembly and the second rotor are located on the outer periphery of the isolation sleeve; the isolation sleeve is sealed to the first body.

10. The fluid management device according to claim 8 or 9, characterized in that, The housing includes a fourth housing, the housing having a circuit board receiving cavity, the wall forming the circuit board receiving cavity including the side wall of the first housing and the inner wall of the fourth housing, the first housing and the fourth housing being fixedly connected or limitedly connected; The fluid management device includes a circuit board located in the circuit board receiving cavity, and the circuit board is signal-connected to the stator assembly.

11. The fluid management device according to claim 10, characterized in that, The first port and the fourth port are formed in the second housing, and the second port, the third port and the fifth port are formed in the second body.

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