Fluid unit and fluid control device

Abstract

A fluid unit and a fluid control device are disclosed. The fluid unit (1000) includes a housing unit (10), a valve unit (20), and a pump unit (30). The housing unit includes a first side wall portion (11) that is hermetically connected, a flow path portion (12), and a pump lid portion (13). The housing unit also includes a first valve chamber (111), a housing chamber (131), and a fluid passage (121). The housing chamber communicates with the first valve chamber through the fluid passage. The valve unit includes a first valve unit (21). The first valve unit includes a first valve body (211). At least a part of the first valve body is located in the first valve chamber. The pump unit includes an impeller unit (31). At least a part of the impeller unit is located in the housing chamber. There is a gap between at least a part of the axis of the first valve body and the axis of the impeller unit. Along the height direction of the fluid unit, at least a part of at least one impeller unit and the first valve body are located at different heights. Such a fluid unit can reduce the flow resistance of the fluid between the fluid elements.

Description

Technical Field

[0001] This application claims the priority of a Chinese patent application filed with the China National Intellectual Property Administration on June 29, 2022, with the application number 202210755821.0 and the invention title "Fluid Unit and Fluid Control Device", and all of its contents are incorporated herein by reference.

[0002] The present invention relates to the field of fluid control, and specifically, to a fluid unit and a fluid control device.

Background Art

[0003] Generally, a thermal management system includes at least two fluid elements, and the fluid flows between the fluid elements. In order to reduce the flow resistance of the fluid between the two fluid elements, the arrangement of the fluid elements and the fluid passage between the fluid elements is a problem to be solved.

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of the present invention is to provide a fluid unit and a fluid control device for reducing the flow resistance of the fluid between fluid elements.

Means for Solving the Problems

[0005] The present invention provides a fluid unit, which includes a housing unit, a valve unit and a pump unit. The housing unit includes a first side wall portion, a flow path portion and a pump cover portion. The fluid unit is provided with a first valve chamber, a housing chamber and a flow path. The first side wall portion forms at least a part of the wall of the first valve chamber. The flow path portion forms at least a part of the wall of the fluid passage. The pump cover portion forms at least a part of the wall of the housing chamber. The housing chamber communicates with the fluid passage. The first side wall portion is provided with a port communicating with the fluid passage. The valve unit includes a first valve unit, the first valve unit includes a first valve body, at least a part of the first valve body is located in the first valve chamber, the pump unit includes an impeller unit, and at least a part of the impeller unit is located in the accommodation chamber. There is a gap between at least a part of the axis of the first valve body and the axis of the impeller unit, and along the height direction of the fluid unit, one end of at least one of the impeller units and the end of the first valve body approaching the impeller unit are located at different heights.

[0006] Furthermore, the present invention further provides a fluid control device, which includes a drive unit and the above-mentioned fluid unit. The drive unit includes a stator unit and a motor. The pump unit further includes a rotor unit. The rotor unit is located within the magnetic field range of the stator unit and is connected so as to transmit power to the impeller unit. The motor is connected so as to transmit power to the first valve body.

Advantages of the Invention

[0007] According to the fluid unit and the fluid control device of the present invention, the fluid unit includes a housing unit, a control valve unit and a pump unit. The housing unit is provided with a first valve chamber, an accommodation chamber and a fluid passage. The accommodation chamber communicates with the first valve chamber through the fluid passage. At least a part of the first valve body of the control valve unit is located in the first valve chamber. At least a part of the impeller unit of the pump unit is located in the accommodation chamber. Thus, the fluid circulates between the pump unit and the control valve unit. There is a gap between at least a part of the axis of the first valve body and the axis of the impeller unit. Along the height direction of the fluid unit, one end of at least one impeller unit approaching the first valve body and the end of the first valve body approaching the impeller unit are respectively provided at different heights. This reduces the complexity of the flow path portion between the impeller unit and the first valve body, and further reduces the flow resistance of the fluid between the pump unit and the control valve unit.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Mode for Carrying Out the Invention

[0009] Hereinafter, embodiments of the present invention will be described. In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described below by combining the drawings and specific embodiments. In this specification, relational terms such as "first" and "second" are merely for distinguishing members having the same name, and do not require or imply that such actual relationships or orders exist between these members.

[0010] The fluid unit of the present invention is applicable to a thermal management system, for example, a vehicle thermal management system, and realizes the flow of fluid in the thermal management system by controlling the fluid unit with respect to the fluid.

[0011] As shown in FIGS. 1 to 10, the present invention provides a fluid control device 1, which includes a drive unit 2000 and a fluid unit 1000 that are hermetically arranged, and at least a part of the drive unit 2000 and at least a part of the fluid unit 1000 are arranged along the height direction of the fluid control device 1. The drive unit 2000 includes a drive housing 44, a motor 42, and a stator unit 41. The motor 42 and the stator unit 41 are connected so as to be position-limited in the corresponding drive housing 44. Preferably, the drive housing 44 is provided with a chamber, at least a part of the motor 42 and the stator unit 41 is located in the chamber, and the stator unit 41 is injection-molded and fixed to the drive housing 44, or mounted and position-limited. The fluid unit 1000 includes a valve unit 20 and a pump unit 30. The valve unit 20 includes a first valve unit 21, and the first valve unit 21 includes a first valve body 211 and a first transmission shaft 212. In addition, the pump unit 30 includes an impeller unit 31 and a rotor unit 35. The rotor unit 35 can rotate the impeller unit 31. By engaging with the drive unit 2000 and the fluid unit 1000 to limit their positions, the rotor unit 35 is located within the magnetic field range of the corresponding stator unit 41. When the stator unit 41 is energized, it generates a magnetic field. Under the action of this magnetic field, the rotor unit 35 rotates, and further rotates the impeller unit 31. The first valve body 211 is connected to the motor 42 through the first transmission shaft 212 so as to be transmitted. When the motor 42 rotates, it rotates the first transmission shaft 212, and further rotates the first valve body 211. Preferably, the drive unit 2000 further includes a gear unit 45. Through this gear unit 45, the motor 42 is connected to the first transmission shaft 212 so as to be transmitted, whereby the first valve body 211 can be operated.

[0012] To realize the fluid flow between the valve unit 20 and the pump unit 30, the present invention further provides a fluid unit 1000, which is applicable to the above-mentioned fluid control device 1. Hereinafter, the fluid unit 1000 of the present invention will be described.

[0013] As shown in FIGS. 6 to 10, the fluid unit 1000 includes a valve unit 20, a pump unit 30, and a housing unit 10. The housing unit 10 includes a first side wall portion 11 that is hermetically connected, a flow path portion 12, and a pump cover portion 13. In addition, the housing unit 10 is provided with a first valve chamber 111, a housing chamber 131, and a fluid passage 121. The first side wall portion 11 forms at least a part of the wall portion of the first valve chamber 111. The flow path portion 12 forms at least a part of the wall portion of the fluid passage 121. The pump cover portion 13 forms at least a part of the wall portion of the housing chamber 131. The housing chamber 131 communicates with the first valve chamber 111 at least through the fluid passage 121. In this case, the storage chamber 131 communicates with the fluid passage 121, the fluid passage 121 communicates with the first valve chamber 111, at least a part of the first valve element 211 is located in the first valve chamber 111, the pump unit 30 includes an impeller unit 31, and at least a part of the impeller unit 31 is located in the storage chamber 131. By arranging the flow path portion 12, the fluid flow between the first valve unit 21 and the pump unit 30 can be realized. Regarding the number of the pump units 30, it may be set according to the needs of the user or the thermal management system. For example, the number of the pump units 30 is one, two, three or more, the number of the pump cover portions 13 may be the same as the number of the pump units 30, and correspondingly, the number of the flow path portions 12 is the same as the number of the pump cover portions 13, thereby communicating the fluid in the pump cover portion 13 with the control valve unit 40. In this embodiment, the number of the pump units 30 is three, and correspondingly, the number of the pump cover portions 13 is three. All the three pump cover portions 13 communicate with the first valve chamber 111 through the corresponding fluid passages 121, thereby realizing the fluid flow between the pump unit 30 and the first valve unit 21.

[0014] In addition, the valve unit 20 further includes a second valve unit 22, the second valve unit 22 includes a second valve element 221, and the housing unit 10 further includes a second side wall portion 16. In addition, the housing unit 10 further includes a second valve chamber 161. Along the direction intersecting the axial direction of the first valve element 211, for example, the direction perpendicular to the axial direction of the first valve element 211, the first valve chamber 111 and the second valve chamber 161 are arranged in parallel and communicate with each other. Along the direction intersecting the axial direction of the first valve element 211, the second side wall portion 16 and the first side wall portion 141 are arranged in parallel and spaced apart. The second side wall portion 16 forms at least a part of the wall portion of the second valve chamber 161, at least a part of the second valve element 221 is located in the second valve chamber 161, and with the above arrangement, the fluid can flow between the first valve element 211 and the second valve element 221.

[0015] In order to improve the sealing performance between the housing units 10 and reduce the complexity of mounting the housing units 10, preferably, at least one of the first side wall portion 11 and the pump cover portion 13 and the flow path portion 12 are fixed as an integral structure, for example, integrally injection molded by an injection molding process. For example, in the present embodiment, the first side wall portion 11, the pump cover portion 13, and the flow path portion 12 are all integrally injection molded to better realize the sealing arrangement among the three. Compared with the form where they are separately arranged and then mounted and sealed, the manufacturing process can be reduced, and further, the pipeline connection between the first side wall portion 11 and the pump cover portion 13 can be reduced or omitted to realize the integration of the valve unit 20 and the pump unit 30.

[0016] Referring to FIGS. 6 to 10, along the height direction of the fluid unit 1000, at least a part of at least one impeller unit 31 and the first valve body 211 are located at different heights. Preferably, one end of at least one impeller unit 31 close to the first valve body 211 and the end of the conduction chamber structure of the first valve body 211 close to the impeller unit 31 are located at different heights. At least a part of the flow path portion 12 is located on the outer peripheral side of the first side wall portion 11, and the extending direction of at least a part of the flow path portion 12 intersects with the extending direction of the first side wall portion 11. In this case, at least a part of the axis of the first valve body 211 and the axis of the impeller unit 31 do not overlap, that is, there is a gap between at least a part of the axis of the first valve body 211 and the axis of the impeller unit 31. For example, the axis of the first valve body 211 and the axis of the impeller unit 31 are parallel or intersect. With the above arrangement, the flow path portion 12 can be arranged according to the needs of the fluid unit, and the structure of the flow path portion 12 between the impeller unit 31 and the first valve body 211 can be simplified to reduce the fluid flow resistance between the pump unit 30 and the valve unit 20. In this specification, the height direction of the fluid unit is parallel to or overlaps with the axial direction of the first valve body 211.

[0017] In this specification, an impeller unit 31 located at a height different from that of the first valve body 211 along the height direction of the fluid unit 1000 is defined as the first impeller unit 310. Based on this, the pump cover 13 includes a first pump cover 130, and the accommodation chamber 131 includes a first accommodation chamber 1311 located in the first pump cover 130. As shown in FIGS. 9 and 10, at least a part of the first impeller unit 310 is located in the accommodation chamber 131 of the first pump cover 130, that is, located in the first accommodation chamber 1311. At least a part of the first pump cover 130 and the first side wall portion 11 are provided at different heights along the height direction of the fluid unit 1000, and the orthographic projection of the first pump cover 130 and the orthographic projection of the first side wall portion 11 at least partially overlap. With the above arrangement, the occupied space of the fluid unit 1000 is reduced, the fluid unit 1000 becomes more compact, the length of the flow path portion 12 between the pump unit 30 and the first valve unit 21 is shortened, and further, the flow resistance of the fluid can be reduced.

[0018] Furthermore, when the orthographic projection of the first pump cover 130 and the orthographic projection of the first side wall portion 11 at least partially overlap along the height direction of the fluid unit 1000, the orthographic projection of the first impeller unit 310 and the orthographic projection of the first side wall portion 11 are arranged with a gap therebetween, or along the height direction of the fluid unit 1000, the orthographic projection of the first impeller unit 310 and the orthographic projection of the first side wall portion 11 at least partially overlap, and the orthographic projection of the first impeller unit 310 and the orthographic projection of the first valve body 211 are arranged with a gap therebetween, or as shown in FIG. 10, along the height direction of the fluid unit 1000, the orthographic projection of the first impeller unit 310 and the orthographic projection of the first valve body 211 at least partially overlap. With the above arrangement, according to the needs of the user, the size of the fluid unit 1000 along the direction perpendicular to the height direction is reduced, and the structure of the fluid unit 1000 becomes compact. When the number of the first impeller units 310 is at least two and the number of the first pump cover parts 130 is at least two, the positional relationship among the first pump cover part 130, the corresponding first impeller unit 310, the first valve body 310, and the first side wall part 11 is any one of the above projection structural relationships, and the positional relationships among all the first impeller units 310, the first pump cover parts 130, the first valve bodies 310, and the first side wall parts 11 may be the same or different.

[0019] When the fluid unit 1000 includes at least two pump units 30, along the height direction of the fluid unit 1000, the impeller units 31 of all the pump units 30 are located at the same height and are respectively provided at different heights from the first valve body 211, or the impeller units 31 of some of the pump units 30 and the first valve body 211 are respectively provided at different heights. As shown in FIGS. 8 and 11, at least a part of the impeller units 31 of some other pump units 30 and a part of the first valve body 211 are located at the same height. Along the height direction of the fluid unit 1000, the impeller units 31 with at least a part located at the same height as a part of the first valve body 211 are defined as the second impeller units 311, and the number of the second impeller units 311 and the number of the first impeller units 310 may be set according to the user's needs.

[0020] Furthermore, along the height direction of the fluid unit 1000, the orthographic projections of the impeller units 31 of all the pump units 30 and the orthographic projection of the first valve body 211 all at least partially overlap, or as shown in FIGS. 8 and 11, when at least a part of the impeller units 31 of some of the pump units 30 and a part of the first valve body 211 are located at the same height, the orthographic projection of the impeller unit 31 in the pump unit 30 along the height direction and the orthographic projection of the first valve body 211 along the height direction are arranged with a gap therebetween, that is, the orthographic projection of the second impeller unit 311 along the height direction and the orthographic projection of the first valve body 211 along the height direction are arranged with a gap therebetween. With the above arrangement, based on the arrangements of the pump unit 30 and the first valve unit 21 of the fluid unit 1000, the arrangement of the flow path portion 12 can be diversified, the structure of the flow path portion 12 can be simplified, and the flow resistance of the fluid can be reduced.

[0021] The fluid unit 1000 of the present invention includes three pump units 30. Along the height direction of the fluid unit, the corresponding impeller units 31 of the three pump units 30 are all provided at different heights from the first valve body 211. That is, the corresponding impeller units 31 of the three pump units 30 are all the first impeller units 310. The three first impeller units 310 may be located at the same height or at different heights, and the present invention does not limit this. Preferably, the corresponding impeller units 31 of the three pump units 30 may all be the first impeller units 310.

[0022] As shown in FIGS. 9, 10, 12 to 14, in order to realize the driving function of the pump unit 30 for the fluid, the first pump cover portion 130 further includes a first hole path 132 and a second hole path 133. The first hole path 132 and the second hole path 133 both communicate with the corresponding accommodation chamber 131. In the same first pump cover portion 130, the first hole path 132 and the second hole path 133 both communicate with the first accommodation chamber 1311. At least a part of the first hole path 132 corresponds to the first impeller unit 310 and is coaxially arranged. In this case, the first hole path 132 is the inlet of the corresponding pump unit 30, and the opening on one side of the second hole path 133 is located at the outer peripheral edge of the first impeller unit 310. In this case, the second hole path 133 is the outlet of the corresponding pump unit 30. The fluid 31 flows between the first hole path 132 and the second hole path 133 due to the rotation of the impeller unit 31 in the accommodation chamber 131. The first side wall portion 11 is provided with a port 112 communicating with the fluid passage 121. One of the first hole path 132 and the second hole path 133 of the first pump cover portion 130 communicates with the port 112 through the fluid passage 121. With the above configuration, the fluid flow between the pump unit 30 and the first valve unit 21 can be realized.

[0023] As shown in FIG. 10, the first hole passage 132 of the first pump cover portion 130 communicates with the fluid passage 121. When the first hole passage 132 of the first pump cover portion 130 communicates with the first valve chamber 111 through the fluid passage 121, along the height direction of the fluid unit 1000, at least a part of the wall portion of the first hole passage 132 of the first pump cover portion 130 and a part of the first side wall portion 11 are located at the same height, and the flow path portion 12 is connected between the first side wall portion 11 and the wall portion of the first hole passage 132. With the above configuration, the structure of the flow path portion 12 can be simplified, and the flow resistance of the fluid flowing in the flow path portion 12 can be reduced.

[0024] As shown in FIG. 14, the housing unit 10 further includes a first top wall portion 141. The first top wall portion 141 is hermetically connected to the first side wall portion 11 and forms a part of the wall portion of the first valve chamber 111. When the second hole passage 133 of the first pump cover portion 130 communicates with the first valve chamber 111 through the fluid passage 121, the opening on one side of the second hole passage 133 is located at the outer peripheral edge of the first impeller unit 310, and the opening on the other side is located on the side of the first top wall portion 141 away from the first valve chamber 111. The first top wall portion 141 forms a part of the wall portion of the fluid passage 121, and the flow path portion 12 forms another part of the wall portion of the fluid passage 121. With the above configuration, the first top wall portion 141 is reasonably used to form a part of the wall portion of the fluid passage 121, and the structure of the fluid unit becomes compact.

[0025] As shown in FIGS. 1 to 14, the first side wall portion 11 is provided with a port 112. This port 112 communicates with the first valve chamber 111 and includes a first port P1 and a second port P2 arranged at intervals. As shown in FIG. 10, the port 112 is arranged along the circumferential direction of the first side wall portion 11, and the first port P1 and the second port P2 are provided adjacent to each other. The number of pump units 30 is at least two, the number of pump covers 13 is the same as the number of pump units 30, and the corresponding first hole passage 132 of at least one pump unit 30 communicates with the first port P1 through one fluid passage 121, and the corresponding second hole passage 133 of at least one other pump unit 30 communicates with the second port P2 through another fluid passage 121. With the above arrangement, fluid communication between the two pump units 30 and one valve unit 20 can be realized.

[0026] As shown in FIG. 13, the port 112 further includes a third port P3, the third port P3, the first port P1, and the second port P2 are arranged at intervals from each other, and along the circumferential direction of the first valve unit 21, there is at least one communication opening between the third port P3 and the first port P1, and there is at least one communication opening between the third port P3 and the second port P2. In this case, the number of pump units 30 is at least three, and the corresponding first hole passage 132 of at least one other pump unit 30 communicates with the third port P3 through another fluid passage 121.

[0027] As shown in FIGS. 6 to 14, in order to explain the communication relationship between the corresponding first pump covers 130 of the three pump units 30 of this embodiment and the corresponding first valve chambers 111 of the first valve unit 21, the corresponding first pump covers 130 of the three pump units 30 are respectively defined as a first sub - cover 13a, a second sub - cover 13b, and a third sub - cover 13c, the three pump units 30 are respectively defined as a first pump member 30a, a second pump member 30b, and a third pump member 30c, the first pump member 30a includes a first impeller member 31a, the second pump member 30b includes a second impeller member 31b, and the third pump member 30c includes a third impeller member 31c. And at least a part of the first impeller member 31a is located in the accommodation chamber 131 of the first sub - cover 13a, at least a part of the second impeller member 31b is located in the accommodation chamber 131 of the second sub - cover 13b, and at least a part of the third impeller member 31c is located in the accommodation chamber of the third sub - cover 13c. Then, along the height direction of the fluid unit 1000, the first impeller member 31a, the second impeller member 31b, and the third impeller member 31c are located at the same height and are each provided at a height different from that of the first valve body 211. The first hole passage 132 of the first sub-cover portion 13a communicates with the first valve chamber 111 through one fluid passage 121, the second hole passage 133 of the second sub-cover portion 13b communicates with the first valve chamber 111 through another fluid passage 121, and the first hole passage 132 of the third sub-cover portion 13c communicates with the first valve chamber 111 through yet another fluid passage 121. With the above arrangement, when the first side wall portion 11, the flow path portion 12, and the pump cover portion 13 are of an integral structure, the integration of the three pump units 30 and the first valve unit 21 can be realized, and furthermore, the fluid flow between the three pump units 30 and the first valve unit 21 can be realized.

[0028] To realize the working mode of the fluid unit 1000, the valve unit 20 further includes a second valve unit 22, and the housing unit 10 further includes a second side wall portion 16. And this housing unit 10 further includes a second valve chamber 161. The second side wall portion 16 forms at least a part of the peripheral wall of the second valve chamber 161. The second valve unit 22 includes a second valve body 221, and at least a part of the second valve body 221 is located in the second valve chamber 161. The second valve chamber 161 communicates with the first valve chamber 111. The second valve body 221 is a three-way valve body, and the first valve body 211 is an eight-way valve body. To realize the sealing between the first valve chamber 111 and the second valve chamber 161, the housing unit 10 further includes a first bottom cover portion 151, a second bottom cover portion 152, a first top wall portion 141, and a second top wall portion 142. And one of the first bottom cover portion 151 and the first top wall portion 141 is injection-molded and fixed to the first side wall portion 11, and the other is welded to the first side wall portion 11 for sealing. One of the second bottom cover portion 152 and the second top wall portion 142 is injection-molded and fixed to the second side wall portion 16, and the other is welded to the second side wall portion 16 for sealing.

[0029] To achieve stable rotation of the impeller unit 31, the pump unit 30 further includes a pump shaft 37, a rotor unit 35, and an isolation sleeve 36, and the rotor unit 35 can be positioned within the magnetic field range of the stator unit 41. In this embodiment, after the pump shaft 37, the rotor unit 35, the isolation sleeve 36, and the impeller unit 31 are assembled as an overall structure, they are hermetically connected to the housing unit 10, and the pump shaft 37 and the isolation sleeve 36 are connected in a position-limited manner. For example, to achieve the position-limited connection between the two, the pump shaft 37 and the isolation sleeve 36 are injection-molded and fixed, or press-fitted. The rotor unit 35 is fitted on the outer peripheral side of the pump shaft 37, the stator unit 41 is located at least partially on the outer peripheral side of the rotor unit 35, the isolation sleeve 36 is located between the rotor unit 35 and the stator unit 41, and the rotor unit 35 is connected to transmit power to the impeller unit 31 and is located within the magnetic field range of the stator unit 41. Thus, when the stator unit 41 is energized, the rotor unit 35 is rotated, and further, this rotor unit 35 rotates the impeller unit 31.

[0030] Furthermore, with respect to the drive unit 2000, the drive housing 44 includes a chamber, at least a part of the motor 42 is located in the chamber, and the stator unit 41 and the drive housing 44 are connected in a position-limited manner. In this specification, the position-limited connection is a mounting position limitation or a fixation as an integral structure. For example, the drive housing 44 includes a position-limiting portion 441, and the stator unit 41 is mounted in the hole of the position-limiting portion 441, or injection-molded and fixed to the position-limiting portion 441 as an insert. The first valve unit 21 further includes a first transmission shaft 212 connected to the first valve body 211 so as to transmit power. Preferably, the first transmission shaft 212 and the first valve body 211 may be integrally injection-molded, or press-fitted, or welded, so that the transmission of driving force between the two can be realized, and one motor 42 is connected to the first transmission shaft 212 so as to transmit power. For example, by means of a gear unit, the motor 42 is connected to the first transmission shaft 212 so as to transmit power. The second valve unit 22 further includes a second transmission shaft 222, and one motor 42 is connected to the second valve body 221 so as to transmit power. Preferably, the second transmission shaft 222 and the first valve body 221 may be integrally injection-molded, or press-fitted, or welded, so that the transmission of driving force between the two can be realized.

[0031] As shown in FIGS. 4 and 5, along the height direction of the fluid unit 1000, both the stator unit 41 and the motor 42 are located on the same side of the first valve unit 21 and are connected so as to be position-limited in the same drive housing 44, or the stator unit 41 and the motor 42 are respectively provided on both axial sides of the first valve unit 21 and are connected so as to be position-limited in the corresponding drive housings 44 respectively.

[0032] To realize the control of the pump unit 30 and the valve unit 20, the fluid unit 1000 further includes a control member 43. And this control member 43 is located in the chamber of the drive housing 44 and is electrically connected to the stator unit 41 and the motor 42.

[0033] As described above, according to the fluid unit 1000 and the fluid control device 1 of the present invention, the fluid unit 1000 includes a housing unit 10, a valve unit 20, and a pump unit 30. The housing unit 10 includes a first valve chamber 111, a storage chamber 131, and a fluid passage 121. The storage chamber 131 communicates with the first valve chamber 111 via the fluid passage 121. At least a part of the first valve element 211 of the valve unit 20 is located in the first valve chamber 111, and at least a part of the impeller unit 31 of the pump unit 30 is located in the storage chamber 131. Thereby, fluid flows between the pump unit 30 and the valve unit 20. Along the height direction of the fluid unit 1000, at least a part of at least one impeller unit 31 and the first valve element 211 are provided at different heights respectively. At least a part of the extending direction of the flow path portion 12 intersects with the extending direction of the first side wall portion 11. Thereby, the complexity of the flow path portion 12 between the impeller unit 31 and the first valve element 211 can be reduced, and the flow resistance of the fluid between the pump unit 30 and the valve unit 20 can be reduced.

[0034] Here, the above embodiments are merely used to explain the present invention. For example, with reference to the definitions of directions such as "front", "rear", "left", "right", "up", and "down", the present invention has been described in detail. However, corrections, combinations, or equivalent replacements may be made to the present invention, and all improvements that do not depart from the spirit and scope of the present invention fall within the scope of the claims of the present invention.

Claims

1. A fluid unit (1000) comprising a housing unit (10), a valve unit (20) and a pump unit (30), wherein the housing unit (10) includes a first side wall portion (11), a flow path portion (12) and a pump cover portion (13), the fluid unit (1000) includes a first valve chamber (111), a housing chamber (131) and a flow path (121), the first side wall portion (11) forms at least a part of the wall of the first valve chamber (111), the flow path portion (12) forms at least a part of the wall of the fluid passage (121), the pump cover portion (13) forms at least a part of the wall of the housing chamber (131), the housing chamber (131) communicates with the fluid passage (121), and the first side wall portion (11) is provided with a port (112) communicating with the fluid passage (121), the valve unit (20) includes a first valve unit (21), the first valve unit (21) includes a first valve body (211), at least a part of the first valve body (211) is located in the first valve chamber (111), the pump unit (30) includes an impeller unit (31), and at least a part of the impeller unit (31) is located in the housing chamber (131), there is a gap between at least a part of the axis of the first valve body (211) and the axis of the impeller unit (31), and one end of at least one impeller unit (31) approaching the first valve body (211) along the height direction of the fluid unit (1000) and the end of the first valve body (211) approaching the impeller unit (31) are located at different heights. A fluid unit (1000) characterized by this.

2. An impeller unit (31) provided at a different height from the first valve body (211) along the height direction of the fluid unit (1000) is defined as a first impeller unit (310), the pump cover portion (13) includes a first pump cover portion (130), the housing chamber (131) includes a first housing chamber (1311), the first pump cover portion (130) forms at least a part of the wall of the first housing chamber (1311), and at least a part of the first impeller unit (310) is located in the first housing chamber (1311). ​ At least a part of the first pump lid portion (130) and at least a part of the first side wall portion (11) are provided at different heights along the height direction of the fluid unit (1000), and the orthographic projection of the first pump lid portion (130) and the orthographic projection of the first side wall portion (11) at least partially overlap. The fluid unit (1000) according to claim 1, characterized in that.

3. The orthographic projection of the first impeller unit (310) and the orthographic projection of the first side wall portion (11) are separated by a predetermined distance along the height direction of the fluid unit (1000). The fluid unit (1000) according to claim 2, characterized in that.

4. The orthographic projection of the first impeller unit (310) and the orthographic projection of the first side wall portion (11) at least partially overlap along the height direction of the fluid unit (1000), The orthographic projection of the first impeller unit (310) and the orthographic projection of the first valve body (211) are arranged at intervals. The fluid unit (1000) according to claim 2, characterized in that.

5. The orthographic projection of the first impeller unit (310) and the orthographic projection of the first valve body (211) at least partially overlap along the height direction of the fluid unit (1000). The fluid unit (1000) according to claim 2, characterized in that.

6. The first pump lid portion (130) further includes a first hole passage (132) and a second hole passage (133), In the same first pump lid portion (130), both the first hole passage (132) and the second hole passage (133) communicate with the first accommodation chamber (1311), At least a part of the first hole passage (132) and the first impeller unit (310) are coaxially arranged, The opening on one side of the second hole passage (133) is located at the outer peripheral edge of the first impeller unit (310), One of the first hole passage (132) and the second hole passage (133) of the first pump lid portion (130) communicates with the fluid passage (121). The fluid unit (1000) according to any one of claims 2 to 5, characterized in that.

7. The first hole passage (132) of the first pump lid portion (130) communicates with the fluid passage (121), At least a part of the wall portion of the first hole passage (132) and a part of the first side wall portion (11) are located at the same height along the height direction of the fluid unit (1000), The fluid unit (1000) according to claim 6, wherein the flow path portion (12) is connected between the first side wall portion (11) and the wall portion of the first hole path (132).

8. The second hole path (133) of the first pump lid portion (130) communicates with the first valve chamber (111) via the fluid passage (121). The housing unit (10) further includes a first top wall portion (141). The first top wall portion (141) is hermetically connected to the first side wall portion (11) and forms a part of the wall portion of the first valve chamber (111). The opening on the other side of the second hole path (133) is located on the side away from the first valve chamber (111) of the first top wall portion (141). The first top wall portion (141) forms a part of the wall portion of the fluid passage (121). The fluid unit (1000) according to claim 6, wherein the flow path portion (12) forms another part of the wall portion of the fluid passage (121).

9. The first side wall portion (11) is provided with a port (112) communicating with the first valve chamber (111). The port (112) includes a first port (P1) and a second port (P2) arranged at intervals. The number of the pump units (30) is at least two. The number of the pump lid portions (13) is the same as the number of the pump units (30). The corresponding first hole path (132) of at least one of the pump units (30) communicates with the first port (P1) via one fluid passage (121). The fluid unit (1000) according to any one of claims 1 to 5, wherein the corresponding second hole path (133) of at least one other pump unit (30) communicates with the second port (P2) via another fluid passage (121).

10. The port (112) further includes a third port (P3). The third port (P3), the first port (P1), and the second port (P2) are arranged at intervals from each other. The number of the pump units (30) is at least three. The fluid unit (1000) according to claim 9, wherein the corresponding first hole path (132) of at least one other pump unit (30) communicates with the third port (P3) via another fluid passage (121).

11. Along the height direction of the fluid unit (1000), the impeller units (31) of all the pump units (30) are located at the same height and are respectively provided at heights different from that of the first valve body (211). Or, the impeller units (31) of some of the pump units (30) and the first valve body (211) are respectively provided at different heights, and at least a part of the impeller units (31) of some other pump units and a part of the first valve body (211) are located at the same height. The fluid unit (1000) according to claim 10, characterized in that.

12. The fluid unit (1000) according to any one of claims 1 to 5, characterized in that at least one of the first side wall portion (11) and the pump cover portion (13) and the flow path portion (12) are fixed as an integral structure.

13. The valve unit (20) further includes a second valve unit (22). The housing unit (10) further includes a second valve chamber (161). At least a part of the second valve unit (22) is located in the second valve chamber (161). The fluid unit (1000) according to any one of claims 1 to 5, characterized in that the second valve chamber (161) communicates with the first valve chamber (111).

14. A fluid control device (1), comprising a drive unit (2000) and the fluid unit (1000) according to any one of claims 1 to 13, the drive unit (2000) includes a stator unit (41) and a motor (42), the pump unit (30) further includes a rotor unit (35), the rotor unit (35) is located in the magnetic field range of the stator unit (41) and is connected so as to transmit power to the impeller unit (31), the fluid control device (1), characterized in that the motor (42) is connected so as to transmit power to the first valve body (211).

15. Along the height direction of the fluid unit (1000), the stator unit (41) and the motor (42) are both located on the same side of the first valve unit (21) and are both connected so as to be position-limited in the same drive housing (44). Alternatively, the stator unit (41) and the motor (42) are respectively provided on both axial sides of the first valve unit (21) and are connected with their positions restricted in the corresponding drive housings (44), the fluid control device (1) according to claim 14.

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