Fluid control unit

Abstract

The present invention discloses a fluid control unit comprising a storage chamber, the fluid control unit comprising a valve body and a valve element, the valve body comprising a side wall portion, the side wall portion being at least a part of a peripheral wall of the storage chamber, the fluid control unit further comprising at least two rows of communication port groups spaced apart along a circumferential direction of the side wall portion, the communication port groups being located in the valve body, each row of communication port groups comprising at least two communication ports spaced apart along an axial direction of the side wall portion, at least a part of the valve element being located in the storage chamber and rotatable, the valve element comprising an external conductive chamber, the external conductive chamber comprising at least one common conductive passage, the fluid control unit comprising at least two operating modes, in which at least two communication ports provided in each of the at least two rows of communication port groups are connected by the same common conductive passage, thereby simplifying the structure of the fluid control unit.

Description

Technical Field

[0001] This application claims the priority of a Chinese patent application filed with the China National Intellectual Property Administration on September 16, 2021, with the application number 202111086049.X and the invention title "Fluid Control Unit", and all its contents are incorporated herein by reference.

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

Background Art

[0003] Generally, in order to control the fluids in a plurality of flow paths in a thermal management system, a fluid control unit is arranged. The fluid control unit includes a valve body and communication ports. By rotating the valve body, different conduction modes between the plurality of communication ports are realized, and further, the fluid control needs of the plurality of flow paths in the thermal management system are realized.

Summary of the Invention

Problems to be Solved by the Invention

[0004] When using one fluid control unit to meet different conduction modes between a plurality of communication ports, in order to simplify the structure of the fluid control unit, how to design it is a problem to be solved.

[0005] The object of the present invention is to provide a fluid control unit for simplifying the structure of the fluid control unit.

Means for Solving the Problems

[0006] The present invention provides a fluid control unit, which includes an accommodation chamber. The fluid control unit includes a valve body and a valve element. The valve body includes a side wall portion, and the side wall portion constitutes at least a part of the peripheral wall of the accommodation chamber. The fluid control unit further includes at least two rows of communication port groups arranged at intervals along the circumferential direction of the side wall portion. The communication port groups are located in the valve body. Each row of the communication port groups includes at least two communication ports arranged at intervals along the axial direction of the side wall portion. At least a part of the valve element is located in the accommodation chamber and is rotatable. The valve element includes an external conduction chamber, and the external conduction chamber includes at least one common conduction passage. The flow cross-sectional area of the opening of the common conduction passage facing the side wall portion is larger than three times the flow cross-sectional area of the communication port. The fluid control unit includes at least two operating modes. In two of the operating modes, at least two of the communication ports respectively provided in at least two rows of the communication port groups are conducted through the same common conduction passage.

Effects of the Invention

[0007] The fluid control unit provided by the present invention includes at least two rows of communication port groups. Each row of the communication port groups includes at least two communication ports arranged at intervals along the axial direction of the side wall portion. At least one common conduction passage is provided in the valve element. In two of the operating modes, at least two of the communication ports respectively provided in at least two rows of the communication port groups are conducted through the same common conduction passage, which simplifies the structure of the fluid control unit and can realize different conduction methods among a plurality of communication ports.

Brief Description of the Drawings

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Embodiments for Carrying Out the Invention

[0009] Hereinafter, embodiments of the present invention will be described in detail. To make the object and advantages of the present invention clearer, the present invention will be described in more detail based on the drawings and specific embodiments below. In this specification, relational terms such as "first" and "second" are merely used to distinguish members having the same name, and it is not required or implied that there is an actual relationship or order between these members.

[0010] The present invention provides a fluid control unit, which is applicable to a vehicle thermal management system, specifically a coolant circulation system, and can realize the functions of fluid passage conduction and switching for the thermal management system.

[0011] As shown in FIGS. 1 to 6, the fluid control unit 1000 includes a valve body 10, a valve element 20, and a sealing member 30. This fluid control unit 1000 is provided with an accommodation chamber 101. The valve body 10 is provided with a side wall portion 11, and this side wall portion 11 constitutes at least a part of the peripheral wall of the accommodation chamber 101. The valve body 10 further includes a top wall portion and a bottom cover 12. In this embodiment, the side wall portion 11, the top wall portion, and the bottom cover 12 define the accommodation chamber 101. The members defining the accommodation chamber 101 further include other members except the side wall portion 11, the top wall portion, and the bottom cover 12. At least a part of the valve element 20 is located in the accommodation chamber 101 and is rotatable. Along the radial direction of the side wall portion 11, the sealing member 30 is located between the side wall portion 11 and the valve element 20 to realize the sealing of the fluid control unit 1000. And this fluid control unit 1000 further includes a drive unit 40. This drive unit 40 includes a drive member. The drive member includes a motor or a combination of a motor and a transmission gear train. The drive member is connected to the valve element 20 so as to be transmitted, and drives the valve element 20 to rotate.

[0012] Furthermore, referring to FIGS. 1 to 6, the fluid control unit 1000 further includes at least two rows of communication port groups. And these communication port groups are arranged at intervals along the circumferential direction of the side wall portion 11, are located on the side wall portion 11 of the valve body 10, and each row of communication port groups includes at least two communication ports arranged at intervals along the axial direction of the side wall portion 11. As shown in FIG. 6, the fluid control unit 1000 includes two rows of communication port groups, namely a first communication port group PA1 and a second communication port group PA2, which are arranged adjacent to each other. Both the first communication port group PA1 and the second communication port group PA2 include a plurality of communication ports. Furthermore, the fluid control unit 1000 has ports similar in number to the communication ports, through which fluid enters or leaves the fluid control unit 1000. The ports are arranged to form at least two columns of port groups, and each column of port groups includes at least two ports spaced apart along the axial direction of the side wall portion 11. For example, the port groups include a first port group PB1 and a second port group PB2. Then, the ports of the first port group PB1 communicate corresponding to the communication ports of the first communication port group PA1, and the ports of the second port group PB2 communicate corresponding to the communication ports of the second communication port group PA2. By arranging all the ports in the same plane, it facilitates the attachment and integration of the fluid control unit 1000 with other fluid structures.

[0013] As shown in FIGS. 1, 7 to 22, the valve body 20 includes a plurality of external conduction chambers 21, which extend from the outer surface of the valve body 20 into the valve body 20 and are provided with at least one common conduction passage 210. And at least a part of this common conduction passage 210 extends along the circumferential direction of the valve body. The flow cross-sectional area of the opening of the common conduction passage 210 facing the side wall portion 11 is larger than three times the flow cross-sectional area of the communication port, and the distance that the opening of the common conduction passage 210 facing the side wall portion 11 extends along the circumferential direction of the valve body 20 is larger than three times the distance that the communication port extends along the circumferential direction of the side wall portion 11. As shown in FIGS. 19 to 22, the fluid control unit 1000 includes at least two operating modes. In two of these operating modes, at least two communication ports respectively provided in at least two columns of communication port groups are conducted by the same common conduction passage 210. Compared with realizing the conduction of communication ports in two operating modes by arranging two independent conduction passages, with the above arrangement, in the fluid control unit of the present invention, by arranging the common conduction passage 210, the structure of the fluid control unit can be simplified. In this specification, the circumferential direction of the side wall portion 11 and the circumferential direction of the valve body 20 are parallel or overlapping.

[0014] As shown in FIGS. 6 and 19 to 22, the communication port group includes a first communication port group PA1 and a second communication port group PA2.

[0014] And this first communication port group PA1 includes a first port P1 and a third port P3, and the second communication port group PA2 includes a second port P2 and a fourth port P4. The first port P1 and the second port P2 are arranged at intervals along the circumferential direction of the side wall portion 11, and the third port P3 and the fourth port P4 are arranged at intervals along the circumferential direction of the side wall portion 11. In two of the operating modes, the common conduction path that conducts the first port P1, the second port P2, and the third port P3 is the same as the common conduction path that conducts the first port P1, the second port P2, and the fourth port P4. As shown in FIGS. 19 to 22, the common conduction path 210 of the external conduction chamber 21 includes a first common path 211.

[0014] And in the operating modes of FIGS. 19 and 20, the first common path 211 and the first port P1, the second port P2, and the third port P3 are arranged opposite to each other to conduct the first port P1, the second port P2, and the third port P3. In the operating modes of FIGS. 21 and 22, the first port P1, the second port P2, and the fourth port P4 are also arranged opposite to the first common path 211 and conduct through the first common path 211. Compared with realizing the conduction of the communication ports in two operating modes by two independent conduction paths, by the above arrangement, in the fluid control unit of the present invention, the structure of the valve body 20 can be simplified by arranging one common conduction path, and further, the structure of the fluid control unit can be simplified. Here, the fluid control unit of the present invention may include the above four communication ports, or may include five, six, seven, eight, nine, ten or more communication ports, and the present invention does not limit this.

[0015] Specifically, when implemented, the first common path 211 includes a first portion 211a and a second portion 211b. Then, along the axial direction of the valve body 20, the first portion 211a is located between the second common passage 212 and the second portion 211b. The flow cross-sectional area of the opening of the first portion 211a facing the side wall portion is larger than three times the flow cross-sectional area of the communication port. The flow cross-sectional area of the opening of the second portion 211b facing the side wall portion is larger than one time the flow cross-sectional area of the communication port. When projected along the axial direction of the valve body 20, the orthographic projection of the wall surface of the second portion 211b is at the intermediate position of the orthographic projection of the wall surface of the first portion 211a.

[0016] Combining FIGS. 1, 6 to 15, the first communication port group PA1 further includes the fifth port P5, and the second communication port group PA2 further includes the sixth port P6. The fifth port P5 and the sixth port P6 are arranged at intervals along the circumferential direction of the side wall portion 11. Along the axial direction of the side wall portion 11, the first port P1 is located between the third port P3 and the fifth port P5, and the second port P2 is located between the fourth port P4 and the sixth port P6. The valve body 20 includes a first conduction structure CA1. And the external conduction chamber 21 of this first conduction structure CA1 includes at least two common conduction passages 210. The common conduction passages 210 include a first common passage 211 and a second common passage 212 that are isolated from each other. The first common passage 211 and the second common passage 212 are arranged at intervals along the axial direction of the valve body 20. As shown in FIGS. 19 and 20, the fluid control unit 1000 has a first operation mode. And in this first operation mode, a part of the first conduction structure CA1 of the valve body 20 and the communication port are correspondingly and oppositely arranged. The first port P1, the second port P2, and the third port P3 are conducted by the first common passage 211, and the fifth port P5 and the sixth port P6 are conducted by the second common passage 212. The fluid control unit of the present invention may include the above six communication ports, or may include more communication ports, and the present invention does not limit this. In this specification, FIGS. 19 to 30 show one flow direction of the fluid flow path FP using a structure with arrows. The flow direction of the flow path FP is not limited to the direction of the drawing, and the fluid may flow in the reverse direction.

[0017] As shown in FIGS. 21 and 22, the fluid control unit 1000 further includes a second operation mode. In this second operation mode, another part of the first conduction structure CA1 of the valve body 20 and the communication port correspond to each other and are arranged opposite to each other. The first port P1, the second port P2, and the fourth port P4 are conducted through the first common passage 211, and the fifth port P5 and the sixth port P6 are conducted through the second common passage 212. In this case, the first operation mode and the second operation mode can realize the conduction of a plurality of communication ports with the first conduction structure CA1, simplify the structure of the valve body, and simplify the structure of the fluid control unit.

[0018] As shown in FIGS. 8 to 14 and 16, the valve body 20 further includes a second conduction structure CA2. The second conduction structure CA2 and the first conduction structure CA1 are arranged at intervals along the circumferential direction of the valve body 20 and are isolated from each other. The external conduction chambers of the second conduction structure CA2 include a third common passage 213 and a fourth common passage 214 that are isolated from each other. The third common passage 213 and the fourth common passage 214 are arranged at intervals along the axial direction of the valve body 20. As shown in FIGS. 23 and 24, the fluid control unit 1000 further includes a third operation mode. In this third operation mode, a part of the second conduction structure CA2 of the valve body 20 corresponds to the communication port. The first port P1, the second port P2, and the fourth port P4 are conducted through the third common passage 213, and the fifth port P5 and the sixth port P6 are conducted through the fourth common passage 214. In this case, the third port P3 is in a closed state.

[0019] The third common passage 213 includes a third part 213a and a fourth part 213b. Along the axial direction of the valve body 20, the third part 213a is located between the fourth common passage 214 and the fourth part. The flow cross-sectional area of the opening of the third part 213a facing the side wall part is larger than three times the flow cross-sectional area of the communication port. The flow cross-sectional area of the opening of the fourth part 213b facing the side wall part is larger than one times the flow cross-sectional area of the communication port. When projected along the axial direction of the valve body 20, the orthographic projection of the wall surface of the fourth part 213b is at the intermediate position of the orthographic projection of the wall surface of the third part 213a.

[0020] As shown in FIGS. 25 and 26, the fluid control unit 1000 further includes a fourth operation mode. In this fourth operation mode, another part of the second conduction structure CA2 of the valve body 20 corresponds to and is arranged opposite to the communication port. The first port P1, the second port P2, and the third port P3 are conducted through the third common passage 213. The fifth port P5 and the sixth port P6 are conducted through the fourth common passage 214. In this case, the fourth port P4 is in a closed state. With the above arrangement, both the third operation mode and the fourth operation mode can achieve the conduction of a plurality of communication ports with the second conduction structure CA2.

[0021] As shown in FIGS. 8 to 14 and FIG. 17, the valve body 20 further includes a third conduction structure CA3. The third conduction structure CA3 and the second conduction structure CA2 are arranged at intervals along the circumferential direction of the valve body 20 and are isolated from each other. The external conduction chamber 21 of the third conduction structure CA3 includes at least two independent conduction passages IND. As shown in FIGS. 27 and 28, the fluid control unit 1000 further includes a fifth operation mode. In this fifth operation mode, the third conduction structure CA3 of the valve body 20 corresponds to and is arranged opposite to the communication port. The fifth port P5 and the first port P1 are conducted through one of the independent conduction passages IND. The sixth port P6, the second port P2, and the fourth port P4 are conducted through the other independent conduction passage IND. In this case, the third port P3 is in a closed state.

[0022] As shown in FIGS. 8 to 14 and FIG. 18, the valve body 20 further includes a fourth conduction structure CA4. At least a part of the fourth conduction structure CA4 and at least a part of the third conduction structure CA3 are arranged at intervals along the circumferential direction of the valve body 20. The fourth conduction structure CA4 includes an internal conduction chamber 23. Along the radial direction of the valve body 20, the internal conduction chamber 23 is located inside the external conduction chamber 21. The external conduction chamber 21 of the fourth conduction structure CA4 includes at least three independent conduction passages IND. This internal conduction chamber 23 communicates with two of the independent conduction passages IND. The valve body 20 includes a partition plate 22. Along the radial direction of the valve body 20, the partition plate 22 is located between the internal conduction chamber 23 and the external conduction chamber 21 and is provided with through holes 221. The internal conduction chamber 23 communicates with at least two corresponding independent conduction passages IND through the two through holes 221. As shown in FIGS. 29 and 30, the fluid control unit 1000 further includes a sixth operation mode. In this sixth operation mode, the fourth conduction structure CA4 of the valve body 20 and the communication port are correspondingly and oppositely arranged. The fifth port P5 and the first port P1 are conducted through one of the independent conduction passages IND. The sixth port P6, the second port P2, and the third port P3 are conducted through two independent conduction passages IND, the internal conduction chamber 23, and the through holes 221.

[0023] With the above arrangement, when the communication ports of the fluid control unit include six communication ports, the switching of the above six operation modes can be realized by four conduction structures. Compared with providing one conduction structure corresponding to each operation mode, the fluid control unit provided by the embodiment of the present invention has a simple structure.

[0024] As shown in FIGS. 1, 6 to 18, the first communication port group PA1 further includes the seventh port and the ninth port P9, the second communication port group PA2 further includes the eighth port P8 and the tenth port P10, and along the axial direction of the side wall portion 11, the seventh port is located between the ninth port P9 and the fifth port P5, the eighth port P8 is located between the tenth port P10 and the sixth port P6, and the external communication chamber 21 of the first conduction structure CA1 further includes three independent conduction paths IND that are isolated from each other. This independent conduction path IND is isolated from the common conduction path 210. In FIG. 15, the independent conduction path IND is isolated from the first common path 211 and the second common path 212. The second conduction structure CA2 further includes a fifth common path 215 and a sixth common path 216 that are isolated from each other. Along the axial direction of the valve body 20, the fifth common path 215 is located between the sixth common path 216 and the fourth common path 214. The external communication chamber 21 of the third conduction structure CA3 includes at least four independent conduction paths IND that are isolated from each other. The external communication chamber 21 of the fourth conduction structure CA4 includes at least five independent conduction paths IND, and two of the independent conduction paths IND communicate with each other through the through hole 221 on the partition plate 22. Here, the fluid control unit of the present invention may include the above-mentioned 10 communication ports, or may include more communication ports, and the present invention does not limit this. Here, in this specification, the isolation between one path and another path means that they are not communicated by the valve body structure, and the communication between the two paths can be realized by other members in the thermal management system. Or the isolation between one communication port and another communication port means that they are not communicated by the side wall portion structure, and the communication between the two communication ports can be realized by the communication chamber of the valve body or other members in the thermal management system.

[0025] Based on this, as shown in FIGS. 19 to 22, in the first operation mode and the second operation mode, the seventh port and the ninth port P9 are conducted through the independent conduction path IND of the first conduction structure CA1, and the eighth port P8 and the tenth port P10 are conducted through the independent conduction path IND of the first conduction structure CA1. As shown in FIGS. 23 to 26, in the third operation mode and the fourth operation mode, both the seventh port and the eighth port P8 are connected by the fifth common passage 215, and both the ninth port P9 and the tenth port P10 are connected by the sixth common passage 216. As shown in FIGS. 27 and 28, in the fifth operation mode, the seventh port and the ninth port P9 are connected by the independent conduction passage IND of the third conduction structure CA3, and the eighth port P8 and the tenth port P10 are connected by the independent conduction passage IND of the third conduction structure CA3. As shown in FIGS. 29 and 30, in the sixth operation mode, the seventh port and the ninth port P9 are connected by the independent conduction passage IND of the fourth conduction structure CA4, and the eighth port P8 and the tenth port P10 are connected by the independent conduction passage IND of the fourth conduction structure CA4. Here, in this specification, when conducting through the conduction chamber and the communication port, the valve body is rotated to a position where the conduction structure and the communication port face each other.

[0026] As described above, the fluid control unit 1000 of the present invention includes at least two columns of communication port groups. Each column of communication port groups includes at least two communication ports arranged at intervals along the axial direction of the side wall portion 11. The valve body 20 is provided with at least one common conduction passage. In two of the operation modes, at least two communication ports provided in at least two columns of communication port groups are connected by the same common conduction passage. By arranging two independent conduction passages in two operation modes to realize the conduction of at least two communication ports, the fluid control unit 1000 of the present invention simplifies the structure of the fluid control unit 1000 by arranging a common conduction passage and can realize different conduction methods among a plurality of communication ports.

[0027] Here, the above embodiments do not limit the present invention, but are for explaining the present invention. For example, the directional definitions such as "front", "rear", "left", "right", "up", and "down" are used. Although the present invention has been already described in detail herein with reference to the above embodiments, those skilled in the art can make corrections, combinations, or equivalent substitutions to the present invention. All improvements that do not depart from the spirit and scope of the present invention should fall within the scope of the claims of this application.

Claims

1. A fluid control unit comprising a housing chamber, the fluid control unit including a valve body and a valve element, the valve body including a side wall portion, the side wall portion constituting at least a part of the peripheral wall of the housing chamber, the fluid control unit further comprising at least two rows of communication port groups arranged at intervals along the circumferential direction of the side wall portion, the communication port groups being located in the valve body, each row of the communication port groups including at least two communication ports arranged at intervals along the axial direction of the side wall portion, at least a part of the valve element being located in the housing chamber, the valve element including an external communication chamber, the external communication chamber including at least one common communication passage, the fluid control unit comprising at least two operating modes, in two of the operating modes, at least two of the communication ports respectively provided in at least two rows of the communication port groups being conducted through the same common communication passage, a fluid control unit characterized thereby.

2. The flow cross-sectional area of the opening of the common communication passage facing the side wall portion is larger than three times the flow cross-sectional area of the communication port, the communication port group including a first communication port group and a second communication port group arranged adjacent to each other, the first communication port group including a first port and a third port, the second communication port group including a second port and a fourth port, the first port and the second port being arranged at intervals along the circumferential direction of the side wall portion, the third port and the fourth port being arranged at intervals along the circumferential direction of the side wall portion, in two of the operating modes, the common communication passage for conducting the first port, the second port and the third port being the same as the common communication passage for conducting the first port, the second port and the fourth port, the fluid control unit according to Claim 1, characterized thereby.

3. The first communication port group further includes a fifth port, the second communication port group further includes a sixth port, the fifth port and the sixth port being arranged at intervals along the circumferential direction of the side wall portion, along the axial direction of the side wall portion, the first port being located between the third port and the fifth port, the second port being located between the fourth port and the sixth port, the valve element including a first conduction structure, the external communication chamber of the first conduction structure including a first common passage and a second common passage isolated from each other, The fluid control unit includes a first operation mode. In the first operation mode, a part of the first conduction structure of the valve body corresponds to the communication port, the first port, the second port, and the third port are conducted through the first common passage, and the fifth port and the sixth port are conducted through the second common passage. The fluid control unit according to claim 2, characterized in that.

4. The fluid control unit further includes a second operation mode. In the second operation mode, another part of the first conduction structure of the valve body corresponds to the communication port, the first port, the second port, and the fourth port are conducted through the first common passage, and the fifth port and the sixth port are conducted through the second common passage. The fluid control unit according to claim 3, characterized in that.

5. The first common passage includes a first part and a second part. Along the axial direction of the valve body, the first part is located between the second common passage and the second part. The flow cross-sectional area of the opening of the first part facing the side wall part is larger than three times the flow cross-sectional area of the communication port, and the flow cross-sectional area of the opening of the second part facing the side wall part is larger than one time the flow cross-sectional area of the communication port. When projected along the axial direction of the valve body, the orthographic projection of the wall surface of the second part is at an intermediate position of the orthographic projection of the wall surface of the first part. The fluid control unit according to claim 4, characterized in that.

6. The valve body further includes a second conduction structure. The second conduction structure and the first conduction structure are arranged at intervals along the circumferential direction of the valve body and are isolated from each other. The external conduction chambers of the second conduction structure include a third common passage and a fourth common passage that are isolated from each other. The fluid control unit further includes a third operation mode. In the third operation mode, a part of the second conduction structure of the valve body corresponds to the communication port, the first port, the second port, and the fourth port are conducted through the third common passage, and the fifth port and the sixth port are conducted through the fourth common passage. The fluid control unit according to any one of claims 3 to 5, characterized in that.

7. The fluid control unit further includes a fourth operation mode. In the fourth operation mode, another part of the second conduction structure of the valve body corresponds to the communication port, the first port, the second port, and the third port are in communication through the third common passage, and the fifth port and the sixth port are in communication through the fourth common passage. The fluid control unit according to claim 6, characterized in that.

8. The third common passage includes a third part and a fourth part. Along the axial direction of the valve body, the third part is located between the fourth common passage and the fourth part. The flow cross-sectional area of the opening of the third part facing the side wall part is larger than three times the flow cross-sectional area of the communication port, and the flow cross-sectional area of the opening of the fourth part facing the side wall part is larger than one time the flow cross-sectional area of the communication port. When projected along the axial direction of the valve body, the orthographic projection of the wall surface of the fourth part is at an intermediate position of the orthographic projection of the wall surface of the third part. The fluid control unit according to claim 7, characterized in that.

9. The valve body further includes a third conduction structure. The third conduction structure and the second conduction structure are arranged at intervals along the circumferential direction of the valve body and are isolated from each other. The external conduction chamber of the third conduction structure includes at least two independent conduction passages. The fluid control unit further includes a fifth operation mode. In the fifth operation mode, the third conduction structure of the valve body corresponds to the communication port, the fifth port and the first port are in communication through one of the independent conduction passages, and the sixth port, the second port, and the fourth port are in communication through the other independent conduction passage. The fluid control unit according to claim 7, characterized in that.

10. The valve body further includes a fourth conduction structure. At least a part of the fourth conduction structure and at least a part of the third conduction structure are arranged at intervals along the circumferential direction of the valve body. The fourth conduction structure further includes an internal conduction chamber. Along the radial direction of the valve body, the internal conduction chamber is located inside the external conduction chamber. The external conduction chamber of the fourth conduction structure includes at least three of the independent conduction passages, and two of the independent conduction passages communicate corresponding to the internal conduction chamber. The fluid control unit further includes a sixth operation mode. In the sixth operation mode, the fourth conduction structure of the valve body corresponds to the communication port, and one of the fifth port and the first port is conducted through one of the independent conduction paths, and the sixth port, the second port, and the third port are conducted through two of the independent conduction paths and the corresponding internal conduction chambers. The fluid control unit according to claim 9, characterized in that.

11. The valve body further includes a partition plate. Along the radial direction of the valve body, the partition plate is located between the internal conduction chamber and the independent conduction path, and has a through hole. The internal conduction chamber communicates with at least two corresponding independent conduction paths through the through hole. The fluid control unit according to claim 10, characterized in that.

12. The first communication port group further includes a seventh port and a ninth port, the second communication port group further includes an eighth port and a tenth port. Along the axial direction of the side wall portion, the seventh port is located between the ninth port and the fifth port, and the eighth port is located between the tenth port and the sixth port. The external conduction chamber of the first conduction structure further includes three independent conduction paths isolated from each other. The independent conduction paths and the common conduction path are isolated from each other. The external conduction chamber of the second conduction structure further includes a fifth common path and a sixth common path isolated from each other. The external conduction chamber of the third conduction structure includes at least four independent conduction paths. The external conduction chamber of the fourth conduction structure includes at least five independent conduction paths. The fluid control unit according to claim 10, characterized in that.

13. In the first operation mode and the second operation mode, the seventh port and the ninth port are conducted through the independent conduction path of the first conduction structure, and the eighth port and the tenth port are conducted through the independent conduction path of the first conduction structure. In the third operation mode and the fourth operation mode, both the seventh port and the eighth port are conducted through the fifth common path, and both the ninth port and the tenth port are conducted through the sixth common path. In the fifth operation mode, the seventh port and the ninth port are conducted through the independent conduction path of the third conduction structure, and the eighth port and the tenth port are conducted through the independent conduction path of the third conduction structure. In the sixth operation mode, the seventh port and the ninth port are electrically connected by the independent conduction path of the fourth conduction structure, and the eighth port and the tenth port are electrically connected by the independent conduction path of the fourth conduction structure. The fluid control unit according to claim 12, characterized in that.

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