control valve

Abstract

This application provides a fluid control valve, which includes a valve body and a valve core assembly. The valve core assembly includes a first valve core and a second valve core. The control valve has a valve cavity, and the valve body has a port. The first valve core and the second valve core are located in the valve cavity. Rotating the valve core assembly can open or close the port corresponding to the communicating cavity of the valve core assembly. The control valve also includes a first transmission part and a second transmission part. The first transmission part is integrally formed with or drivenly connected to the first valve core, and the second transmission part is integrally formed with or drivenly connected to the second valve core. The valve core shaft is drivenly connected to the first valve core. When the first valve core rotates, the first transmission part contacts the second transmission part and drives the second valve core to rotate, thereby realizing different flow modes through the two valve cores. The assembly structure between the valve cores of this control valve is relatively simple and has little impact. It can realize different combinations of the first valve core and the second valve core and flow channel switching modes.

Description

Technical Field

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

[0002] With increasing global energy consumption and environmental pressures, new energy vehicles have undoubtedly become a new trend in the future automotive industry, playing a significant role in protecting the Earth's environment, mitigating resource consumption, and improving the quality of human life. Control valves, as important components of the air conditioning control system and battery cooling and other thermal management systems in new energy vehicles, play a crucial role in controlling the flow rate and direction of media. How to design control valves to meet the flow rate and direction requirements of thermal management systems is a pressing issue that needs to be addressed. Summary of the Invention

[0003] The purpose of this invention is to provide a control valve that can better control the flow rate and direction of the medium.

[0004] This application provides a control valve, including a valve body and a valve core assembly. The control valve has a valve cavity, at least a portion of the valve core assembly is located in the valve cavity, the valve body has at least four ports, and the control valve has at least three interfaces, wherein the interfaces are external interfaces of the control valve, the ports are correspondingly connected to the interfaces, and the ports are connected to the valve cavity. The valve core assembly includes a first valve core, a second valve core, and a valve shaft. The first valve core and the second valve core are arranged along the axial direction of the control valve, at least a portion of the first valve core and at least a portion of the second valve core are both located in the valve cavity, and the valve core shaft is kinetically connected to the first valve core. The valve core assembly has a communicating cavity, the communicating cavity including a first communicating cavity and... The second connecting cavity is formed in the first valve core and the second connecting cavity is formed in the second valve core. The control valve further includes a first transmission part and a second transmission part. The first transmission part is connected to the second transmission part. The first transmission part is integrally formed with or connected to the first valve core so that the first transmission part can rotate synchronously with the first valve core. The second transmission part is integrally formed with or connected to the second valve core so that the second transmission part can rotate synchronously with the second valve core. When the first valve core rotates, the first transmission part contacts the second transmission part and drives the second valve core to rotate. The rotation of the first valve core and the second valve core can connect the port corresponding to the connecting cavity.

[0005] The control valve provided in this application includes a first transmission part and a second transmission part. The valve core shaft can drive the first valve core to rotate. The first transmission part can rotate synchronously with the first valve core. The second transmission part can drive the second valve core to rotate. When the first valve core rotates, the first transmission part contacts the second transmission part and drives the second valve core to rotate, thereby realizing the combined connection and cutoff of the flow channel. The assembly structure between the valve cores of this control valve is relatively simple and has little impact. It can realize different combinations and flow channel switching modes of the first and second valve cores, and can better meet the connection and switching needs of the thermal management system. Attached Figure Description

[0006] Figure 1 A three-dimensional structural schematic diagram of the first embodiment of the control valve provided in this application;

[0007] Figure 2 for Figure 1 Schematic diagram of the exploded structure of the central control valve;

[0008] Figure 3 for Figure 2 A three-dimensional structural diagram of the valve body and valve core assembly from one perspective;

[0009] Figure 4 for Figure 3 A front view structural diagram of the assembly;

[0010] Figure 5 for Figure 4 A-A sectional view of the middle assembly;

[0011] Figure 6 yes Figure 4 A schematic diagram of the B-B cross-sectional structure of the middle assembly component;

[0012] Figure 7 yes Figure 4 C-C sectional view of the middle assembly;

[0013] Figure 8 This is a three-dimensional structural diagram of the valve body from a first-person perspective;

[0014] Figure 9 This is a three-dimensional structural diagram of the valve body from a second perspective;

[0015] Figure 10 This is a three-dimensional structural diagram of the valve body from a third perspective;

[0016] Figure 11 This is a three-dimensional structural diagram of the valve body from the fourth perspective;

[0017] Figure 12 This is a partial cross-sectional view of the valve body.

[0018] Figure 13 This is a three-dimensional structural diagram of the valve core assembly, the upper cover plate, the lower cover plate, and the sealing ring from one perspective.

[0019] Figure 14 yes Figure 13 An exploded view of the assembly components;

[0020] Figure 15 yes Figure 13 A front view structural diagram of the assembly;

[0021] Figure 16 yes Figure 15 A schematic diagram of the D-D cross-sectional structure;

[0022] Figure 17 This is a three-dimensional structural diagram of the first valve core from one perspective;

[0023] Figure 18 This is a three-dimensional structural diagram of the second valve core from one perspective;

[0024] Figure 19 This is a schematic diagram of the flow channel cross-section structure at the first valve core when the valve core assembly is in the first working position.

[0025] Figure 20 This is a schematic diagram of the flow channel cross-section structure at the second valve core when the valve core assembly is in the first working position.

[0026] Figure 21 A schematic diagram of the flow channel cross-section structure at the first valve core when the valve core assembly is in the second working position;

[0027] Figure 22 This is a schematic diagram of the flow channel cross-section structure at the second valve core when the valve core assembly is in the second working position.

[0028] Figure 23 This is a schematic diagram of the flow channel cross-section structure at the first valve core when the valve core assembly is in the third working position.

[0029] Figure 24 This is a schematic diagram of the flow channel cross-section structure at the second valve core when the valve core assembly is in the third working position.

[0030] Figure 25 This is a schematic diagram of the flow channel cross-section structure at the first valve core when the valve core assembly is in the fourth working position.

[0031] Figure 26 This is a schematic diagram of the flow channel cross-section structure at the second valve core when the valve core assembly is in the fourth working position. Detailed Implementation

[0032] The features and exemplary embodiments of various aspects of the present invention will now be described in detail. In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] This invention provides a control valve that can be used in a vehicle thermal management system, specifically in a coolant circulation system, and can connect and switch the flow paths of the thermal management system.

[0034] See Figures 1-8 The control valve 1000 includes a valve body 100, a valve core assembly 200, and a drive unit 300. The valve body 100 has a valve cavity 101 and a port 201. The valve body 100 includes a side wall portion, which forms the peripheral wall of the valve cavity 101 or at least a part of the peripheral wall. The port 201 is located in the side wall portion and communicates with the valve cavity 101. The valve core assembly 200 includes a first valve core 11, a second valve core 12, and a valve shaft 13. The first valve core 11 and the second valve core 12 are arranged along the axial direction of the control valve 100. Both the first valve core 11 and the second valve core 12 are located in the valve cavity 101. The drive unit 300 is drivenly connected to the first valve core 11 through the valve shaft 13, so that the valve core shaft 9 can drive the first valve core 11 to rotate. In this embodiment, the first valve core 11 and the second valve core 12 are separate structures. The first valve core 11 and the second valve core 12 are drivenly connected and rotate synchronously. Of course, the drive unit 300 can also be located in the thermal management system, not integrated with the control valve, but can be connected to the valve shaft 13 for transmission; the first valve core 11 and the second valve core 12 can also be integrated as one piece.

[0035] like Figures 14 to 18 As shown, the control valve 100 also includes a first transmission part 15 and a second transmission part 14. The first transmission part 15 is located on the side of the first valve core 11 near the second valve core 12. The first transmission part 15 is integrally formed with or driven by the first valve core 11. In this embodiment, the first transmission part 15 is integrally formed with the first valve core 11 so that the first transmission part 15 can rotate synchronously with the first valve core 11. The second transmission part 14 is integrally formed with or driven by the second valve core 12. In this embodiment, the second transmission part 14 is integrally formed with the second valve core 12 so that the second transmission part 14 can rotate synchronously with the second valve core 12. The second transmission part 14 is located on the side of the second valve core 12 near the first valve core 11. Further reference Figure 16 and Figure 18 The first transmission part 15 has an external gear part 151, and the second transmission part 14 has an internal gear part 141. The first transmission part 15 and the second transmission part 14 are driven by gears through the external gear part 151 and the internal gear part 141, thereby enabling the first valve core 11 and the second valve core 12 to be connected by gear transmission; furthermore, in Figure 16 and Figure 18In this embodiment, the second valve core 12 also has a shaft support portion 142. The second transmission portion 14 is located at one end of the second valve core 12, and the shaft support portion 142 is located at the other end of the second valve core 12 and protrudes from the end face. The shaft support portion 142 is coaxially arranged with the valve shaft 13 and supports the control valve housing. The housing includes a valve body and a cover plate. The cover plate includes a first cover plate and a second cover plate. In this embodiment, the shaft support portion 142 is supported by the second cover plate. The specific structure will be described later. When the first valve core 11 rotates, the first transmission portion 15 contacts the second transmission portion 14 and drives the second valve core 12 to rotate synchronously.

[0036] like Figures 9 to 13 As shown, valve chamber 101 includes a first valve chamber 102 and a second valve chamber 103. At least a portion of the first valve chamber 102 and at least a portion of the second valve chamber 103 are arranged along the axial direction of the control valve. The sidewall portion of valve body 100 includes a first sidewall portion 104 and a second sidewall portion 105. The first sidewall portion 104 forms the peripheral wall of the first valve chamber 102 or at least a part of the peripheral wall, and the second sidewall portion 105 forms the peripheral wall of the second valve chamber 103 or at least a part of the peripheral wall. At least a portion of the first valve core 11 is located in the first valve chamber 102. 02. At least a portion of the second valve core 12 is located in the second valve cavity 103; wherein the number of ports 201 of the control valve can be five, defined as first port 21, second port 22, third port 23, fourth port 24, and fifth port 25, respectively. First port 21 and second port 22 can both be located in the first sidewall portion 104 and both communicate with the first valve cavity 102, and third port 23, fourth port 24, and fifth port 25 can all be located in the second sidewall portion 105 and all communicate with the second valve cavity 103. Of course, the number of ports 201 is not limited to five; the valve body 100 has at least four or six ports.

[0037] In this embodiment, further reference is made. Figures 8 to 13 The control valve 1000 may have four ports 90, defined as the first port 91, the second port 92, the third port 93 and the fourth port 94. The ports are external ports of the control valve 1000, and the working medium can flow into or out of the control valve from the ports. The number of ports is not limited to four, but the number of ports is greater than or equal to three. The ports of the control valve are connected to the ports. In this embodiment, the corresponding connection includes one-to-one connection, many-to-one connection and one-to-many connection.

[0038] In this embodiment, please refer to further details. Figures 6 to 12The number of ports 201 is greater than the number of interfaces 90. The control valve has four interfaces. In this embodiment, the four interfaces are also formed in the valve body 100. The valve body 100 has five ports 201. In order to ensure the connection between the interface 90 and the ports 201, in this embodiment, the valve body 100 also has a bypass channel 70 and four flow channels 80. Two ports 201 are connected to the bypass channel 70. The bypass channel 70 is connected to one of the interfaces 90 through a flow channel 80. The other three ports 201 are connected to the other three interfaces 90 one by one through the other three flow channels 80. Specifically, there are four flow channels 80, defined as a first flow channel 81, a second flow channel 82, a third flow channel 83, and a fourth flow channel 84. There is one bypass channel 70. One opening of each flow channel is formed on the outer surface of the valve body to form an interface of the control valve, and the other opening of some flow channels is formed on the inner wall of the valve body to form a port of the control valve. Specifically, one opening of the first flow channel 81 is the first interface 91, and the other opening of the first flow channel 81 is the first port 21. One opening of the second flow channel 82 is the second interface 92; the other opening of the second flow channel 82 is... The bypass channel 70 is connected, and the other port of the second flow channel 82 is defined as the bypass connection hole 71. The second flow channel 82 and the bypass channel 70 are connected through the bypass connection hole 71. The second port 22 and the third port 23 are both connected to the bypass channel 70. Thus, the second port 22, the third port 23 and the bypass connection hole 71 are connected through the bypass channel 70. One port of the third flow channel 83 is the third interface 93, and the other port of the third flow channel 83 is the fourth port 24. One port of the fourth flow channel 84 is the fourth interface 94, and the other port of the fourth flow channel 84 is the fifth port 25.

[0039] Further reading Figures 1 to 5 , Figures 6 to 7The control valve 1000 also includes a first cover plate 61 and a second cover plate 62. The first cover plate 61 is connected to one end of the valve body 100, and the second cover plate 62 is connected to the other end of the valve body 100. The valve cavity 10 is located between the first cover plate 61, the valve body 100, and the second cover plate 62. The first cover plate 61 has a first support portion 611 and a second support portion 612, and the second cover plate 62 has a third support portion 621 and a fourth support portion 622. The first support portion 611, the second support portion 612, the third support portion 621, and the fourth support portion 622 are all located in the valve cavity 101. The control valve 1000 includes a first sealing ring 51. The second sealing ring 52, the third sealing ring 53, and the fourth sealing ring 54 are provided. The first sealing ring 51 is supported by the first support part 611 and is located near the first port 21. The second sealing ring 52 is supported by the second support part 612 and is located near the second port 22. The third sealing ring 53 is supported by the third support part 621 and is located near the third port 23. The fourth sealing ring 54 is supported by the fourth support part 622 and is located near the fourth port 24. Each sealing ring has a channel that communicates with the adjacent corresponding port. In this embodiment, the fifth port 25 is a normally open port, and no sealing ring is provided on the outer periphery of the fifth port 25. Of course, either the first cover plate 61 or the second cover plate 62 can be integrally formed with the valve body, while the other is separately fixedly connected to the valve body.

[0040] like Figure 5 As shown, the second cover plate 62 also has a mounting groove 623, the opening of which faces the valve cavity 101. The shaft support portion 142 extends into the mounting groove 623 and is supported on the second cover plate 62. The mounting groove 623 is a circular hole and is coaxially arranged with the valve shaft 13. Figure 1 and 16 As shown, the first cover plate 61 has a through hole 610 that passes through the upper and lower end faces of the first cover plate 61. A portion of the valve shaft 13 extends out of the valve chamber 101 from the through hole 610. The extended portion of the valve shaft 13 is connected to the drive unit 300 for transmission. The valve shaft 13 located in the valve chamber is connected to the first valve core 11 for transmission.

[0041] Please refer to further information. Figures 1 to 16 In this embodiment, the drive unit 300 is located on one side of the first cover plate 61, the port 201 is located on the inner side wall of the valve body 100 and is arranged circumferentially along the inner side wall, and the interface 90 is located on the outer side wall of the valve body 100 and can be located on the same plane. The side where the drive unit 300 is located is perpendicular to and adjacent to the side where the interface 90 is located. This is conducive to the rational use of the space of the control valve. At the same time, placing the interfaces on the same plane is conducive to forming a unified sealing structure and simplifies the assembly process.

[0042] like Figures 15 to 20As shown, the first valve core 11 has a first communicating cavity 111, and the second valve core 12 has a second communicating cavity 121. In this embodiment, the first valve core 11 and the second valve core 12 are injection molded. The first communicating cavity 111 is formed by recessing from the outer surface of the first valve core 11 into a groove, and the second communicating cavity 121 is formed by recessing from the outer surface of the second valve core 12 into a groove. Of course, in other embodiments, the first communicating cavity 111 and the second communicating cavity 121 can also be through holes. The first connecting cavity 111 and the second connecting cavity 121 are collectively referred to as the connecting cavities of the valve core assembly. The first connecting cavity 111 and the second connecting cavity 121 are independent spaces and are not directly connected, that is, the first connecting cavity 111 and the second connecting cavity 121 are not connected on the valve core assembly. The rotation of the first valve core 11 and the second valve core 12 can connect the ports 201 located at both ends of the connecting cavity of the valve core assembly. In this embodiment, the first connecting cavity 111 can connect the first port 21 and the second port 22, and the second connecting cavity 121 can connect the fifth port 25 and the fourth port 24 or the fifth port 25 and the third port 23. That is, the second connecting cavity 121 can make the fifth port 25 and the fourth port 24 connected, or the second connecting cavity 121 can make the fifth port 25 and the third port 23 connected. In this embodiment, the fifth port 25 is normally open. Along the axial direction of the control valve, the orthographic projection of the cavity wall of the first connecting cavity 111 and the orthographic projection of the cavity wall of the second connecting cavity 121 are at least partially offset from each other.

[0043] like Figure 17 , Figure 19 , Figure 21 , Figure 23 , Figure 25 As shown, the main body of the first valve core 11 has a spherical structure. The first valve core 11 has a first sealing part 112. A plane perpendicular to the valve shaft 13 passes through the center of the first valve core 11 to form a cross-section of the first valve core 11. The projection of the first valve core 11 in this cross-section is circular. On the cross-section of the first valve core 11, the arc length corresponding to the first connecting cavity 111 is more than half of the circumference of the first valve core 11. The arc length corresponding to the first sealing part 112 is greater than the diameter of either the first sealing ring 51 or the second sealing ring 52, and the arc length corresponding to the first sealing part 112 is less than half of the circumference of the first valve core. This facilitates the connection between the first port 21 and the second port 22 through the first connecting cavity 111 without obstructing the connection between the first port 21 and the second port 22. At the same time, the first sealing part 112 can cooperate with the first sealing ring 51 and the second sealing ring 52 to seal the first port 21 and the second port 22.

[0044] like Figure 18 , Figure 20 , Figure 22 , Figure 24 , Figure 26As shown, the second valve core 12 has a second sealing portion 122. A plane perpendicular to the valve shaft passes through the center of the second valve core 12 to form a cross-section of the second valve core 12. The projection of the second valve core 12 onto this cross-section is circular. On the cross-section of the second valve core 12, the arc length corresponding to the second connecting cavity 121 is less than the arc length between the third port 23 and the fourth port 24, and the arc length corresponding to the second sealing portion 122 is greater than the diameter of either the third sealing ring 53 or the fourth sealing ring 54. This facilitates selective communication between the fifth port 25 and either the third port 23 or the fourth port 24 through the second connecting cavity 121. At the same time, the second sealing portion 122 can cooperate with the third sealing ring 53 and the fourth sealing ring 54 to seal either the third port 23 or the fourth port 24.

[0045] In this embodiment, the control valve has four operating modes, but it may also have only one or a few operating modes.

[0046] See also Figure 19 and Figure 20 In the first operating mode, the valve core assembly is in the first position. The first interface 91 is connected to the second interface 92 through the first communicating cavity 111 of the first valve core 11, and the fourth interface 94 is connected to the second interface 92 through the second communicating cavity 121 of the second valve core 12 and the bypass channel 70. Specifically, Figure 19 This is a schematic diagram of the flow channel cross-section structure at the first valve core when the valve core assembly is in the first working position. Figure 20 This is a schematic diagram of the flow channel cross-section at the second valve core when the valve core assembly is in the first working position; see reference. Figure 19 The first valve core 11 has a first communicating cavity 111 that connects to the first port 21 and the second port 22. The first sealing part 112 is located between the first port 21 and the second port 22 and does not obstruct the first port 21 and the second port 22. In this embodiment, the first sealing part 112 is located in the first valve cavity and is near the valve body where the first interface 91 is located. The first port 21 is connected to the first interface 91 through the first flow channel 81, and the second port 22 is connected to the second interface 92 through the bypass channel 70 and the second flow channel 82. See also Figure 20 The second connecting cavity 121 of the second valve core connects to the third port 23 and the fifth port 25. The fourth interface 94 connects to the fifth port 25 through the fourth flow channel 84. The second sealing part 122 is located between the third port 23 and the fifth port 25 and seals the fourth port 24. The second sealing part 122 does not obstruct the third port 23 and the fifth port 25. The second port 23 connects to the second interface 92 through the bypass channel 70 and the second flow channel 82. At this time, the second sealing part 122 obstructs the fourth port 24, so that the third interface 93 is in the closed state. The first position is set as the initial position, and the angle of the valve core assembly position is defined as 0° in the initial position.

[0047] See also Figure 21 and Figure 22 In the second operating mode, the valve core assembly is in the second position. The first sealing part 112 of the first valve core 11 seals the first port 21, and the first interface 91 is not open. The fourth interface 94 is connected to the second interface 92 through the second communicating cavity 121 of the second valve core 12. For details, please refer to [link to relevant documentation]. Figure 21 The first sealing part 112 of the first valve core 11 seals the first port 21, making the first port 21 disconnected from the second port 22, and the first interface 91 also disconnected; see reference Figure 22 The second connecting cavity 121 of the second valve core 12 connects the third port 23 and the fifth port 25. The third port 23 is connected to the second interface 92 through the bypass channel 70 and the second flow channel 82. The second sealing part 122 of the second valve core 12 seals the fourth port 24, and the third interface 93 is not open. By controlling the valve core assembly to rotate clockwise from 0° to 45°, the control valve switches from the first working mode to the second working mode, and the valve core assembly moves from the first position to the second position.

[0048] See also Figure 23 and Figure 24 In the third operating mode, the valve core assembly is in the third position, the first sealing part 112 of the first valve core 11 seals the first port 21, and the first interface 91 is not open; the third interface and the fourth interface are connected through the communicating cavity of the second valve core; specifically, refer to Figure 23 The first sealing part 112 of the first valve core 11 seals the first port 21, making the first port 21 disconnected from the second port 22, and the first interface 91 also disconnected; see reference Figure 24 The second connecting chamber 121 of the second valve core is connected to the fifth port 25 and the fourth port 24. The fourth port 24 is connected to the third interface 93 through the third flow channel 83, and the fifth port 25 is connected to the fourth interface 94 through the fourth flow channel 84. By controlling the valve core assembly to rotate clockwise from 45° to 90°, the control valve switches from the second working mode to the third working mode.

[0049] See also Figure 25 and Figure 26 In the fourth operating mode, the valve core assembly is in the fourth position. The first interface 91 and the second interface 92 are connected through the first communicating cavity 111 of the first valve core, the third interface 93 and the fourth interface 94 are connected through the second communicating cavity 121 of the second valve core, and the third port 23 is sealed by the second sealing part 122 of the second valve core. For details, please refer to... Figure 25 The first connecting cavity 111 of the first valve core connects to the first port 21 and the second port 22. The first port 21 is connected to the first interface 91 through the first flow channel 81, and the second port 22 is connected to the second interface 92 through the second flow channel 82. (See also...) Figure 26The second connecting chamber 121 of the second valve core is connected to the fourth port 24 and the fifth port 25. The fourth port 24 is connected to the third interface 93 through the third flow channel 83, and the fifth port 25 is connected to the fourth interface 94 through the fourth flow channel 84. By controlling the valve core assembly to rotate clockwise from 90° to 135°, the control valve switches from the third working mode to the fourth working mode.

[0050] Based on this, on the cross-section of the first valve core, a line segment passing through the center of the first valve core and a certain point on the outline of the first valve core is defined as the first reference line. On the cross-section of the second valve core, a line segment passing through the center of the second valve core and a certain point on the outline of the second valve core is defined as the second reference line. It can be understood that the fixed point is a fixed point on the outline of the valve core. When the valve core rotates to any position, the line connecting the fixed point and the center forms the corresponding reference line. The angle between the first reference line at the first position and the first reference line at the second position is 45°. The angle between the second reference line at the first position and the second reference line at the second position is 45°. The angle between the first reference line at the second position and the first reference line at the third position is 45°. The angle between the first reference line at the third position and the first reference line at the fourth position is 45°. The angle between the second reference line at the third position and the second reference line at the fourth position is 45°.

[0051] It should be noted that the above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to the present invention. All technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. A control valve comprising a valve body and a valve trim assembly, said control valve having a valve cavity in which at least a portion of said valve trim assembly is located, said valve body having at least four ports, said control valve having at least three interfaces, wherein said interfaces are external interfaces of said control valve, said ports being in corresponding communication with said interfaces, said ports being in communication with said valve cavity, characterized in that, The valve core assembly includes a first valve core, a second valve core, and a valve shaft. The first valve core and the second valve core are arranged along the axial direction of the control valve. At least a portion of the first valve core and at least a portion of the second valve core are located in the valve cavity. The valve shaft is operatively connected to the first valve core. The valve core assembly has a communicating cavity, which includes a first communicating cavity and a second communicating cavity. The first communicating cavity is formed in the first valve core, and the second communicating cavity is formed in the second valve core. The control valve further includes a first transmission part and a second transmission part. The first transmission part is connected to the second transmission part. The first transmission part is integrally formed with or connected to the first valve core so that the first transmission part can rotate synchronously with the first valve core. The second transmission part is integrally formed with or connected to the second valve core so that the second transmission part can rotate synchronously with the second valve core. When the first valve core rotates, the first transmission part contacts the second transmission part and drives the second valve core to rotate. The rotation of the first valve core and the second valve core can connect the port corresponding to the communication cavity. The valve body includes a side wall portion; the valve body also has a bypass channel located radially outside the side wall portion, wherein two ports are connected to the bypass channel, and the bypass channel is connected to one of the interfaces.

2. The control valve according to claim 1, characterized in that, The first transmission part is integrally formed with the first valve core, and the second transmission part is integrally formed with the second valve core. The first transmission part is located on the side of the first valve core closer to the second valve core, and the second transmission part is located on the side of the second valve core closer to the first valve core. The first transmission part has an external toothed part, and the second transmission part has an internal toothed part. The first transmission part and the second transmission part are geared together.

3. The control valve according to claim 2, characterized in that, The number of ports is greater than the number of interfaces. The control valve has four interfaces, the valve body has five ports, and the valve body also has a bypass channel and four flow channels. The bypass channel is connected to one of the interfaces through a flow channel, and the other three ports are connected to the other three interfaces one by one through the other three flow channels.

4. The control valve according to claim 3, characterized in that, The five ports are defined as port 1, port 2, port 3, port 4, and port 5; the four interfaces are defined as interface 1, interface 2, interface 3, and interface 4; and the flow channels are defined as flow channel 1, flow channel 2, flow channel 3, and flow channel 4. The first port is connected to the first interface through the first flow channel, the second port and the third port are both connected to the bypass channel, the second interface is connected to the bypass channel through the second flow channel, the fourth port is connected to the third interface through the third flow channel, and the fifth port is connected to the fourth interface through the fourth flow channel.

5. The control valve according to claim 4, characterized in that, The control valve further includes a first cover plate and a second cover plate, which are arranged along the axial direction of the control valve. The first cover plate is connected to one end of the valve body, and the second cover plate is connected to the other end of the valve body. The valve cavity is located between the first cover plate, the valve body, and the second cover plate. The first cover plate has a first support portion and a second support portion, and the second cover plate has a third support portion and a fourth support portion. The first support portion, the second support portion, the third support portion, and the fourth support portion are located in the valve cavity. The control valve further includes a first sealing ring, a second sealing ring, a third sealing ring, and a fourth sealing ring. The first sealing ring is supported by the first support portion and disposed adjacent to the first port. The second sealing ring is supported by the second support portion and disposed adjacent to the second port. The third sealing ring is supported by the third support portion and disposed adjacent to the third port. The fourth sealing ring is supported by the fourth support portion and disposed adjacent to the fourth port.

6. The control valve according to claim 5, characterized in that, The first valve core has a first sealing portion, and a plane perpendicular to the valve shaft passes through the center of the first valve core to form a cross-section of the first valve core. The cross-section of the first valve core is circular. On the cross-section of the first valve core, the arc length corresponding to the first communicating cavity is more than half of the circumference of the cross-section of the first valve core. The arc length corresponding to the first sealing portion is greater than the diameter of either the first sealing ring or the second sealing ring, and the arc length corresponding to the first sealing portion is less than half of the circumference of the cross-section of the first valve core. The second valve core has a second sealing portion, and a plane perpendicular to the valve shaft passes through the center of the second valve core to form a cross-section of the second valve core. The cross-section of the second valve core is circular. On the cross-section of the second valve core, the arc length corresponding to the second communicating cavity is less than the arc length between the third port and the fourth port, and the arc length corresponding to the second sealing portion is greater than the diameter of either the third sealing ring or the fourth sealing ring.

7. The control valve according to claim 6, characterized in that, The control valve further includes a drive unit, which is connected to the valve shaft. The drive unit is located on one side of the valve body, the port is located circumferentially on the inner wall of the valve body, and the interface is located on the outer wall of the valve body and is on the same plane.

8. The control valve according to claim 7, characterized in that, The control valve has at least one of the following operating modes: In the first operating mode, the valve core assembly is in the first position. The first connecting cavity of the first valve core is connected to the first port and the second port. The second connecting cavity of the second valve core is connected to the third port and the fifth port. The first port is connected to the first interface through the first flow channel. The second port and the third port are connected to the second interface through the bypass channel and the second flow channel. The fourth interface is connected to the fifth port through the fourth flow channel. The second sealing part seals the fourth port to close the fourth port and the third interface. In the second operating mode, the valve core assembly is in the second position, the second communication cavity of the second valve core is connected to the third port and the fifth port, the third port is connected to the second interface through the bypass channel and the second flow channel, the fourth interface is connected to the fifth port through the fourth flow channel, the first sealing part seals the first port to close the first port and the first interface, and the second sealing part seals the fourth port to close the fourth port and the third interface; In the third operating mode, the valve core assembly is in the third position, the second communication cavity of the second valve core is connected to the fifth port and the fourth port, the fourth port is connected to the third interface through the third flow channel, the fourth interface is connected to the fifth port through the fourth flow channel, the first sealing part seals the first port to close the first port and the first interface, the second sealing part seals the third port, and the second interface is closed; In the fourth operating mode, the valve core assembly is in the fourth position. The first connecting cavity of the first valve core connects the first port and the second port. The second connecting cavity of the second valve core connects the fourth port and the fifth port. The first port is connected to the first interface through the first flow channel. The second port is connected to the second interface through the second flow channel. The fourth port is connected to the third interface through the third flow channel. The fifth port is connected to the fourth interface through the fourth flow channel.

9. The control valve according to claim 8, characterized in that: On the cross-section of the first valve core, a line segment passing through the center of the first valve core and a certain point on the outline of the first valve core is defined as a first reference line. On the cross-section of the second valve core, a line segment passing through the center of the second valve core and a certain point on the outline of the second valve core is defined as a second reference line. The angle between the first reference line at the first position and the first reference line at the second position is 45°, the angle between the second reference line at the first position and the second reference line at the second position is 45°, the angle between the first reference line at the second position and the first reference line at the third position is 45°, the angle between the second reference line at the second position and the second reference line at the third position is 45°, the angle between the first reference line at the third position and the first reference line at the fourth position is 45°, and the angle between the second reference line at the third position and the second reference line at the fourth position is 45°.

10. The control valve according to claim 9, characterized in that: The drive unit is connected to the valve shaft. The first position is set as the initial position. The rotation angle of the valve core assembly is defined as 0° in the initial position. By controlling the valve core assembly to rotate clockwise from 0° to 45°, the control valve switches from the first working mode to the second working mode. By controlling the valve core assembly to rotate clockwise from 45° to 90°, the control valve switches from the second working mode to the third working mode. By controlling the valve core assembly to rotate clockwise from 90° to 135°, the control valve switches from the third working mode to the fourth working mode.

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