CN116697100A

CN116697100A - Control valve

Info

Publication number: CN116697100A
Application number: CN202210175985.6A
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Zhejiang Sanhua Automotive Components Co Ltd
Current assignee: Zhejiang Sanhua Automotive Components Co Ltd
Priority date: 2022-02-25
Filing date: 2022-02-25
Publication date: 2023-09-05

Abstract

The invention discloses a control valve, which comprises a valve body assembly and a valve core, wherein the valve body assembly is provided with a containing cavity and a plurality of communication ports, the valve body assembly comprises a wall part, the wall part defines at least part of the containing cavity, and the communication ports are positioned on the inner surface of the wall part facing the containing cavity; at least part of the valve core is positioned in the accommodating cavity and can rotate, the valve core comprises a first conduction channel, the first conduction channel comprises a first sub-channel, a second sub-channel and a third sub-channel, at least part of the first sub-channel and at least part of the second sub-channel are arranged at intervals along the rotating direction of the valve core, the first sub-channel and the second sub-channel are communicated through the third sub-channel, and the third sub-channel is always communicated with one of the communication ports; wherein, at one of the positions of the valve core, the second sub-channel and the first sub-channel can be communicated with at least two other communication ports; so that the valve spool can communicate at least three communication ports.

Description

Control valve

Technical Field

The invention relates to the field of fluid control, in particular to a control valve.

Background

In a thermal management system, it is necessary to control on/off of a plurality of flow paths by using a control valve, for example, when a valve element is rotated to a corresponding position, communication between at least three communication ports is required, and how to design a control valve to meet the above fluid requirements is a problem to be solved.

Disclosure of Invention

The invention aims to provide a control valve, which enables at least three communication ports to be communicated when a valve core rotates to a corresponding position.

The embodiment of the invention provides a control valve, which comprises a valve body assembly and a valve core, wherein the valve body assembly is provided with a containing cavity and a plurality of communication ports, the valve body assembly comprises a wall part, and at least part of the containing cavity is defined by the wall part;

at least part of the valve core is positioned in the accommodating cavity and can rotate, the valve core comprises a first conduction channel, the first conduction channel comprises a first sub-channel, a second sub-channel and a third sub-channel, at least part of the first sub-channel and at least part of the second sub-channel are arranged at intervals along the rotating direction of the valve core, the first sub-channel is communicated with the third sub-channel, and the second sub-channel is communicated with the third sub-channel;

the third sub-channel is always communicated with one of the communication ports, and the second sub-channel and the first sub-channel are communicated with at least two other communication ports at one position of the valve core.

According to the control valve provided by the embodiment of the invention, the first conduction channel of the valve core comprises the first sub-channel, the second sub-channel and the third sub-channel, and the third sub-channel is always communicated with one of the communication ports, and at least part of the first sub-channel and at least part of the second sub-channel are arranged at intervals along the rotation direction of the valve core, so that when the valve core rotates to the corresponding position, the second sub-channel and the first sub-channel can be communicated with at least two other communication ports, and the valve core can communicate with at least three communication ports.

Drawings

FIG. 1 is a schematic diagram of an exploded construction of a control valve according to one embodiment of the present invention;

FIG. 2 is a schematic perspective view of the control valve shown in FIG. 1;

FIG. 3 is a schematic cross-sectional view of the control valve shown in FIG. 2;

FIG. 4 is a partial perspective view of a control valve according to one embodiment of the present invention;

FIG. 5 is a schematic elevational structural view of the control valve shown in FIG. 4;

FIG. 6 is a schematic cross-sectional view of the control valve shown in FIG. 5 taken in the direction A-A;

FIG. 7 is a schematic cross-sectional view of the control valve shown in FIG. 5 in one of its positions;

FIG. 8 is a schematic perspective view of a valve core according to an embodiment of the present invention at a first angle;

FIG. 9 is a schematic perspective view of the valve cartridge shown in FIG. 8 at a second angle;

FIG. 10 is a schematic cross-sectional view of the valve cartridge shown in FIG. 8;

FIG. 11 is a schematic cross-sectional view of a control valve according to an embodiment of the present invention in a first mode of operation;

FIG. 12 is a schematic cross-sectional view of a control valve according to an embodiment of the present invention in a second mode of operation;

FIG. 13 is a schematic cross-sectional view of a control valve according to an embodiment of the present invention in a third mode of operation;

FIG. 14 is a schematic cross-sectional view of a control valve according to an embodiment of the present invention in a fourth mode of operation;

FIG. 15 is a schematic cross-sectional view of a control valve according to an embodiment of the present invention in a fifth mode of operation;

FIG. 16 is a schematic cross-sectional view of a control valve according to an embodiment of the present invention in a sixth mode of operation;

FIG. 17 is a schematic view of an exploded construction of a control valve according to another embodiment of the present invention;

FIG. 18 is a schematic elevational view of the control valve illustrated in FIG. 17;

FIG. 19 is a schematic cross-sectional view of the control valve shown in FIG. 18 in the B-B direction;

FIG. 20 is a schematic cross-sectional view of the control valve shown in FIG. 18 in the direction C-C;

FIG. 21 is a schematic perspective view of a valve core according to another embodiment of the present invention;

fig. 22 is a schematic sectional structure of the spool shown in fig. 21.

Detailed Description

Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make the apparent the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and the detailed embodiments. Relational terms such as "first" and "second", and the like, may be used solely to distinguish one element from another element having the same name, and do not necessarily require or imply any such actual relationship or order between the elements.

The embodiment of the invention provides a control valve which can be used for a vehicle thermal management system, particularly a cooling liquid circulation system and can perform the functions of conducting and switching a flow path of the thermal management system.

As shown in fig. 1 to 3, for a control valve according to an embodiment of the present invention, the control valve 1 includes a valve body assembly 10, a valve core 20, and a sealing assembly 30, the valve body assembly 10 has a receiving chamber and a plurality of communication ports 101, the valve body assembly 10 includes a wall portion 102 defining at least part of the receiving chamber, the communication ports 101 are located on an inner surface of the wall portion 102 facing the receiving chamber, the wall portion 102 includes an end wall portion and a side wall portion 1021, the end wall portion and the side wall portion 1021 are hermetically connected, the end wall portion and the side wall portion define at least part of the receiving chamber, the end wall portion includes a bottom wall portion 1022 and a top wall portion 1023 along an axial direction of the valve body assembly 10, at least part of the side wall portion 1021 is located between the bottom wall portion 1022 and the top wall portion 1023, at least part of the valve core 20 is located in the receiving chamber and the valve core 20 is capable of rotating under driving, and at least part of the sealing assembly 30 is located between the side wall portion and the valve core 20 along a radial direction of the side wall portion 1021 for sealing the control valve 1. Optionally, the control valve 1 further includes a driving component 40, where the driving component 40 includes a driving element, and the driving element may include a combination of a motor or a motor and a transmission gear set, and is in transmission connection with the valve core 20, so that the driving element drives the valve core 20 to rotate, and the conduction function of different communication ports 101 is realized through rotation of the valve core 20.

In other embodiments, the control valve 1 further comprises a connection tube 103, wherein the connection tube 103 is provided with a flow passage, one end of the flow passage is communicated with the corresponding communication port 101, and the other end forms a port of the control valve 1, and the port can be integrated on the same plane or arranged according to requirements of users, or the connection tube 103 can be connected with other fluid components in the thermal management system, and the fluid components can be a heat exchanger, a water pump and the like, for example.

As shown in fig. 3 and fig. 4, to monitor the rotation position of the valve core 20 and monitor whether the valve core 20 is locked, the control valve 1 may further include a detection assembly, where the detection assembly includes a member to be detected 25 and a detection element (not shown in the drawing), where the member to be detected 25 can rotate synchronously with the valve core 20, alternatively, the member to be detected 25 is located at one end of the valve core shaft 26 of the valve core 20 and is fixedly connected with the valve core shaft 26, the member to be detected 25 may be a magnetic element, correspondingly, the detection element may be a hall element, and during the rotation of the valve core 20, the hall element is always located in a magnetic field range of the magnetic element, so that the hall element and the magnetic element cooperate with each other to detect the position of the valve core 20; by fixedly connecting the element 25 to be measured with the valve core 20, the valve core position can be detected more accurately. The fixing connection may be, but not limited to, welding, bonding, screwing, fastening by a fastener, or integrally formed as a single body, or a hot riveting process.

As shown in fig. 5 to 10, the valve cartridge 20 includes a first conduction passage 21, the first conduction passage 21 includes a first sub-passage 211, a second sub-passage 212, and a third sub-passage 213, at least part of the first sub-passage 211 and at least part of the second sub-passage 212 are disposed at intervals along a rotation direction of the valve cartridge 20, the first sub-passage 211 and the second sub-passage 212 communicate through the third sub-passage 213, the first sub-passage 211 and the second sub-passage 212 at this time communicate with the third sub-passage 213, and the third sub-passage 213 communicates with one of the communication ports 101 all the time, wherein the second sub-passage 212 and the first sub-passage 211 can communicate with the other at least two communication ports when the valve cartridge 20 is rotated to the corresponding position, and accordingly, the communication port 101 communicating with the third sub-passage 213 can communicate with the other at least two communication ports through the first sub-passage 211, the second sub-passage 212, and the third sub-passage 213 when the valve cartridge 20 is rotated to the corresponding position. With the above arrangement, the valve body 20 can be made conductive to at least three communication ports 101.

To achieve that the third sub-passage 213 is always communicated with one of the communication ports 101, in some embodiments, the third sub-passage 213 has an opening on a side of the spool 20 facing the end wall portion, the communication port 101 communicating with the third sub-passage 213 is located at the end wall portion and faces the third sub-passage 213, in this embodiment, the communication ports 101 communicating with the third sub-passage 213 are located at the bottom wall portion 1022, and the rest of at least a part of the communication ports 101 are located at the side wall portion 1021 and are arranged at intervals in the rotational direction of the spool 20, and specifically, in connection with fig. 6 and 7, the communication ports 101 of the embodiment of the present invention include a first port P1, a second port P2, a third port P3, a fourth port P4, and a fifth port P5, the first port P1 is located at the bottom wall portion 1022 and is always communicated with the third sub-passage 213, and the second port P2, the third port P3, the fourth port P4, and the fifth port P5 are located at intervals in the side wall portion 1021 and are arranged at intervals in the rotational direction of the spool 20. Herein, the axial direction of the spool 20 is parallel to the extending direction of the rotational axis of the spool 20.

In some embodiments, the valve body assembly 10 includes a first housing 11 and a second housing 12 that are disposed in a sealed relation to each other, at least a portion of the second housing 12 being located on one side of the first housing 11 in an axial direction of the valve body assembly 10, wherein a side wall portion 1021 is located on the first housing 11, a bottom wall portion 1022 is located on the second housing 12, and the first sub-passage 211 and the second sub-passage 212 are capable of corresponding and communicating with the communication port 101 located on the first housing 11; the part of the second housing 12 and the part of the valve core 20 are nested with each other, so as to limit the valve core 20, wherein the communication port 101 on the second housing 12 is always communicated with the third sub-channel 213, so that the communication port 101 can be a normal opening, and is communicated with at least two other communication ports in the rotating process of the valve core 20.

As shown in fig. 6 and 11 to 13, during rotation of the valve core 20, at least one of the first port P1 and the other two adjacent communication ports 101 can be conducted through the third sub-channel 213, the first sub-channel 211 and the second sub-channel 212, that is, during rotation of the valve core, the first port P1 is conducted with the fifth port P5, and after rotating for a certain angle, the first port P1 is conducted with the fifth port P5 and the second port P2, and after rotating for a certain angle again, the first port P1 is communicated with the second port P2. The first angle a1 is an included angle formed by connecting lines between the centers of the openings of the first sub-channel 211 and the second sub-channel 212, which face the valve body assembly 10, and the rotation axis of the valve body 20 on the transverse cross section of the valve body assembly 20, and the angles of the two adjacent communication ports 101 are included angles formed by connecting lines between the centers of the two adjacent communication ports 101 and the center line of the accommodating cavity on the transverse cross section of the valve body assembly 10, wherein the center line of the accommodating cavity coincides with the rotation axis of the valve body 20. It is understood that the first angle a1 may be smaller than or equal to the second angle a2, as long as the conduction mode of the control valve through at least three communication ports can be realized.

Referring further to fig. 8 to 10, in some embodiments, the first sub-channel 211 and the second sub-channel 212 are located outside the third sub-channel 213 in the radial direction of the valve core 20, and the first sub-channel 211 and the second sub-channel 212 each extend through the outer surface of the valve core 20 in the circumferential direction, and at this time, the first sub-channel 211 and the second sub-channel 212 each have an opening on the outer surface of the valve core 20 in the circumferential direction, and the third sub-channel 213 has an opening on one side surface of the valve core 20 in the axial direction. By the above arrangement, the third sub-passage 213 can be easily conducted to the communication port located at the bottom wall portion, and the first sub-passage 211 and the second sub-passage 212 can be easily conducted to the communication port located at the side wall portion.

Alternatively, the spool 20 may be a ball spool, i.e., the circumferential surface of the spool 20 may be spherical, in which case the spool 20 includes a circumferential wall 231, the first and second sub-passages 211, 212 being located in the circumferential wall 231, and the third sub-passage 213 being located in a space defined by the circumferential wall 231. In other alternative embodiments, the outer peripheral surface of the valve core 20 shown in fig. 8 to 10 may be cylindrical, and the present invention is not limited thereto.

In some embodiments, the valve cartridge 20 further includes a second communication passage 22, the second communication passage 22 being fluidly isolated from the first communication passage 21, the second communication passage 22 being capable of communicating at least two of the plurality of communication ports 101. Through the arrangement, the control valve can be convenient for conduct a plurality of communication ports, and various communication flow paths are realized. When the spool 20 is of the structure shown in fig. 8 to 10, the second communication passage 22 may have an "L" shape in cross section. In this context, fluid isolation of the two channels means that the fluid flowing through the two channels is isolated from each other and not communicated within the control valve.

As shown in fig. 11 to 16, the communication port 101 includes a first port P1, a second port P2, a third port P3, a fourth port P4, and a fifth port P5, the first port P1 being located at one side of the accommodation chamber in the axial direction of the control valve 1, the second port P2, the third port P3, the fourth port P4, and the fifth port P5 being sequentially arranged in the rotation direction of the spool 20, the spool 20 including a first conduction passage 21 and a second conduction passage 22 that are fluidly isolated from each other, wherein the first conduction passage 21 is capable of conducting at least one of the second port P2 and the fifth port P5 to the first port P1, and the second conduction passage 22 is capable of conducting the third port P3 and the fourth port P4; and/or the first conduction path 21 can conduct at least one of the third port P3 and the fourth port P4 to the first port P1, and the second conduction path 22 can conduct the second port P2 and the fifth port P5.

Based on this, the control valve 1 provided by the embodiment of the present invention includes at least one of the following operation modes:

as shown in fig. 11, the control valve is in the first working mode, the valve core 20 is located at the first position, which defines that the valve core 20 is located at the 0 ° position, the first port P1 is communicated with the fifth port P5 through the third sub-channel 213 and the first sub-channel 211, the third port P3 is communicated with the fourth port P4 through the second conducting channel 22, and the second port P2 is in the closed state;

as shown in fig. 12, the control valve is in the second operation mode, the valve core 20 is in the second position, the first port P1 is communicated with the fifth port P5 through the third sub-channel 213 and the first sub-channel 211, the first port P1 is communicated with the second port P2 through the third sub-channel 213 and the second sub-channel 212, and the third port P3 is communicated with the fourth port P4 through the second conduction channel 22;

as shown in fig. 13, the control valve is in the third working mode, the valve core 20 is located at the third position, which defines that the valve core 20 is located at the 30 ° position, the first port P1 is communicated with the second port P2 through the third sub-channel 213 and the second sub-channel 212, the third port P3 is communicated with the fourth port P4 through the second conducting channel 22, and the fifth port P5 is in the closed state;

as shown in fig. 14, the control valve is in the fourth operation mode, which defines that the valve core 20 is at the 90 ° position, the valve core 20 is at the fourth position, the first port P1 communicates with the fourth port P4 through the third sub-channel 213 and the first sub-channel 211, the third port P3 communicates with the second port P2 through the second conduction channel 22, and the fifth port P5 is in the closed state;

as shown in fig. 15, the control valve is in the fifth operation mode, the valve core 20 is in the fifth position, the first port P1 is communicated with the fourth port P4 through the third sub-channel 213 and the first sub-channel 211, the first port P1 is communicated with the fifth port P5 through the third sub-channel 213 and the second sub-channel 212, and the third port P3 is communicated with the second port P2 through the second conduction channel 22;

as shown in fig. 16, the control valve is in the sixth operating mode, the valve core 20 is in the sixth position, which defines that the valve core 20 is at the 120 ° position, the first port P1 communicates with the fifth port P5 through the third sub-channel 213 and the second sub-channel 212, the third port P3 communicates with the second port P2 through the second conduction channel 22, and the fourth port P4 is in the closed state.

By the arrangement, the valve core 20 can be conducted in a plurality of working modes in the rotating process. In one embodiment, the rotation angle of the valve core 20 may be 30 degrees when the valve core 20 is switched from the first position to the third position, the second position may be any position between the first position and the third position during rotation of the valve core 20, and flow rate ratio adjustment between the second port P2 and the fifth port P5 may be achieved when the valve core is switched from the first position to the third position, for example, when the valve core 20 is rotated 15 degrees from the first position to the second position, 50% of the fluid flowing from the first port P1 flows into the second port P2, and the other 50% flows into the fifth port P5. Further, when the valve core 20 is switched from the third position to the fourth position, the rotation angle of the valve core 20 may be 60 degrees, when the valve core 20 is switched from the fourth position to the sixth position, the rotation angle of the valve core 20 may be 30 degrees, and during the rotation of the valve core 20, the fifth position may be any position between the fourth position and the sixth position, and when the valve core is switched from the fourth position to the sixth position, the flow ratio adjustment between the fourth port P4 and the fifth port P5 may be realized.

It should be noted that, fig. 11 to 16 schematically illustrate six operation modes of the control valve when the valve core 20 rotates from 0 ° to 120 °, and when the valve core 20 continues to rotate from 120 ° to 360 °, six operation modes can be implemented, for example, the second port P2 and the fifth port P5 can be implemented through the second conduction channel 22, and the third port P3 and the fourth port P4 can be implemented through the third sub-channel 213, the first sub-channel 211, and the second sub-channel 212, which are not described herein.

With further reference to fig. 5 to 16, since the first sub-channel 211 and the second sub-channel 212 can achieve flow rate ratio adjustment of the corresponding communication ports, in order to achieve a larger flow rate in the flow rate ratio adjustment process, in some embodiments, the valve core 20 includes a circumferential wall 231, the first sub-channel 211 and the second sub-channel 212 are located on the circumferential wall 231, and the size of the opening of the first sub-channel 211 increases from the middle position to the two ends along the axial direction of the valve core 20, and/or the size of the opening of the second sub-channel 212 increases from the middle position to the two ends. In a specific implementation, the communication port on the side wall portion may be a circular port, the first sub-channel 211 includes two conducting walls B1 arranged along the circumferential direction of the valve core 20, the radius of the conducting walls B1 is the same as that of the circular communication port, the centers of the two oppositely arranged conducting walls B1 are located outside the first sub-channel 211, and the structure of the second sub-channel 212 may be the same as or similar to that of the first sub-channel 211, which is not repeated.

In some embodiments, as shown in fig. 8, the size of the opening of the second conduction path 22 decreases from the middle position to the two ends along the rotation direction of the valve core 20, so that the second conduction path 22 can be well conducted with the communication port and has a larger conduction area.

Referring further to fig. 11-16, in some embodiments, the control valve 1 further includes a seal assembly 30, the seal assembly 30 being located between the valve body assembly 10 and the valve spool 20, the seal assembly 30 including a bore in communication with a corresponding communication port 101, the valve spool 20 having the following extreme positions: as shown in fig. 11, 13 and 14, the partial wall 102 of the opening of the second conduction passage 22 overlaps and abuts against the partial wall of the opening of the corresponding duct, one of the first sub-passage 211 and the second sub-passage 212 is conducted with the corresponding communication port 101, the other is closed, and then the valve spool 20 can realize flow adjustment of the other two communication ports when rotated from the limit position. Through the above arrangement, the rotation angle of the valve core 20 can be increased when the flow ratio between the two communication ports is adjusted, so that better flow adjustment can be realized. In a specific implementation, the size of the opening of the first sub-channel 211 facing the valve body is smaller than that of the opening of the corresponding duct, and by reasonably setting the relationship between the size of the opening of the first sub-channel 211 facing the valve body and the size of the opening of the corresponding duct, and reasonably setting the relationship between the size of the opening of the second sub-channel 212 facing the valve body and the size of the opening of the corresponding duct, the above-mentioned extreme position of the valve core 20 and a plurality of operation modes of the control valve can be realized.

Alternatively, when the valve cartridge 20 is the valve cartridge shown in fig. 5 to 22, the seal assembly 30 may include a seal block 31 and an elastic pad 32, the seal block 31 being located between the elastic pad 32 and the valve cartridge 20, the elastic pad 32 abutting the valve body assembly.

As shown in fig. 17 to 22, a control valve according to another embodiment of the present invention is similar to the control valve shown in fig. 1 to 16 in structure and the same operation mode, the valve core 20 includes a first conduction channel 21, and the first conduction channel 21 includes a first sub-channel 211, a second sub-channel 212, and a third sub-channel 213, which are disposed in a manner similar to the arrangement of fig. 1 to 16, at least differing from each other in that: in this embodiment, the valve core 20 includes a first end plate 241, a second end plate 242, a connecting post 243, and a spacer 244 on the outer peripheral side of the connecting post 243, the first end plate 241 and the second end plate 242 being arranged at intervals in the axial direction of the valve core 20, at least part of the connecting post 243 and the spacer 244 being connected between the first end plate 241 and the second end plate 242, the connecting post 243 extending in the axial direction of the valve core 20, the spacer 244 extending from the connecting post 243 toward the outer peripheral edge of the valve core 20; the third sub-passage 213 is located at the connection post 243, the connection post 243 includes a through hole HO, the first sub-passage 211 and the second sub-passage 212 are respectively communicated with the third sub-passage 213 through the corresponding through hole HO, and the first sub-passage 211 and the second sub-passage 212 are separated by a partition 244. With the above arrangement, the valve body 20 can be made to conduct at least three communication ports. In the embodiment of the present invention, the main body of the valve core 20 is columnar, and the main body of the installed sealing assembly 30 may be columnar.

In summary, according to the control valve 1 provided in the embodiment of the present invention, the first conducting channel 21 of the valve core 20 includes the first sub-channel 211, the second sub-channel 212 and the third sub-channel 213, and the third sub-channel 213 is always communicated with one of the communication ports 101, and by setting at least part of the first sub-channel 211 and at least part of the second sub-channel 212 to be arranged at intervals along the rotation direction of the valve core 20, the first sub-channel 211 and the second sub-channel 212 can synchronously rotate to different positions during the rotation of the valve core 20, so that the valve core 20 can communicate at least three communication ports 101 during the rotation, thereby facilitating popularization and application.

It should be noted that: the above embodiments are only for illustrating the present invention and not for limiting the technical solutions described in the present invention, for example, the directional definitions of "front", "rear", "left", "right", "upper", "lower", etc. although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the present invention can be modified, combined or substituted by the same, and all the technical solutions and modifications thereof without departing from the spirit and scope of the present invention shall be covered by the claims of the present invention.

Claims

1. A control valve comprising a valve body assembly and a valve spool, the valve body assembly having a receiving cavity and a plurality of communication ports, the valve body assembly comprising a wall portion defining at least a portion of the receiving cavity;

2. The control valve according to claim 1, wherein the wall portion includes an end wall portion and a side wall portion protruding from the end wall portion, the communication port communicating with the third sub-passage being located at the end wall portion and facing the third sub-passage, the remaining at least a part of the communication ports being located at the side wall portion and being arranged at intervals in a rotational direction of the spool, the third sub-passage having an opening on a side of the spool facing the end wall portion in an axial direction of the spool;

and defining an included angle between the first sub-channel and the second sub-channel as a first angle in a transverse section perpendicular to the rotation axis of the valve core, wherein the included angle between two adjacent communication ports arranged at intervals along the rotation direction of the valve core is a second angle, and the first angle is larger than the second angle.

3. The control valve according to claim 1 or 2, characterized in that the first sub-passage and the second sub-passage are located outside the third sub-passage in a radial direction of the spool, the first sub-passage and the second sub-passage each having an opening at an outer surface in a circumferential direction of the spool.

4. The control valve of claim 3, wherein the spool includes a circumferential wall, the first and second sub-passages are located in the circumferential wall, and the third sub-passage is located in a space surrounded by the circumferential wall.

5. The control valve according to claim 2, wherein the spool includes a connecting post extending in an axial direction of the spool and a diaphragm on an outer peripheral side of the connecting post, the diaphragm extending from the connecting post toward an outer peripheral edge of the spool;

the third sub-channel is located the spliced pole, the spliced pole includes the through-hole, first sub-channel with the second sub-channel is respectively through corresponding the through-hole with third sub-channel intercommunication, first sub-channel with the second sub-channel passes through the baffle separates.

6. The control valve of claim 1 or 2 or 4 or 5, wherein the spool further comprises a second passage fluidly isolated from the first passage, the second passage being capable of communicating at least two of the plurality of communication ports.

7. The control valve according to claim 6, wherein the spool includes a circumferential wall portion, the first sub-passage and the second sub-passage being located at the circumferential wall portion, a size of an opening of the first sub-passage increasing from a middle position to both ends, and/or a size of an opening of the second sub-passage increasing from a middle position to both ends in an axial direction of the spool;

the size of the opening of the second conduction channel is reduced from the middle position to the two ends along the axial direction of the valve core.

8. The control valve of claim 6 further comprising a seal assembly located between the valve body assembly and the valve spool, the seal assembly including a port in communication with the corresponding communication port, the valve spool having the following extreme positions:

and part of the wall parts of the openings of the second conduction channels are overlapped with the corresponding part of the wall parts of the openings of the pore channels, one of the first sub-channels and the second sub-channels is conducted with the corresponding communication port, and the other is closed.

9. The control valve according to claim 6, wherein the communication port includes a first port, a second port, a third port, a fourth port, and a fifth port, the first port being located on one side of the accommodation chamber in an axial direction of the control valve, the second port, the third port, the fourth port, and the fifth port being arranged in order in a rotational direction of the spool, the spool further including a second communication passage fluidly isolated from the first communication passage;

wherein the first conduction channel is capable of conducting at least one of the second port and the fifth port with the first port, and the second conduction channel is capable of conducting the third port and the fourth port;

and/or the first conduction channel can conduct at least one of the third port and the fourth port with the first port, and the second conduction channel can conduct the second port and the fifth port.

10. The control valve according to any one of claims 1, 2, 4, 5, 7 to 9, wherein the valve body assembly includes a first housing and a second housing that are disposed in sealing relation to each other, at least a portion of the second housing being located on one side of the first housing in an axial direction of the valve body assembly, the first sub-passage and the second sub-passage being capable of corresponding to and communicating with the communication port position located on the first housing;

the part of the second shell and the part of the valve core are mutually nested, and the communication port positioned on the second shell is always communicated with the third sub-channel.