Fluid control assembly

Abstract

The application discloses a fluid control assembly, comprising a valve body, a first valve core and a second valve core, wherein the valve body is provided with a valve cavity, the valve body has a plurality of first valve ports, and the first valve ports are located on a wall part defining the valve cavity; the first valve core has a first channel, at least part of the first valve core is located in the valve cavity, the first valve core can rotate, and the first channel can selectively communicate with the first valve ports; the first valve core has a receiving cavity, and the first channel penetrates a wall part defining the receiving cavity; the second valve core has a second channel, at least part of the second valve core is located in the receiving cavity, the second valve core can rotate, and the second channel can selectively communicate with the first channel. The fluid control assembly provided by the application is beneficial to miniaturization of the valve volume under the premise of guaranteeing flow switching function by arranging at least part of the second valve core in the receiving cavity of the first valve core.

Description

Technical Field

[0001] This invention relates to the field of thermal management technology, and more specifically to a fluid control component for automotive or energy storage applications. Background Technology

[0002] In the field of thermal management technology, multi-channel control valves are commonly used to control flow paths, enabling the control valves to form different connection modes. However, control valves are relatively large, which is not conducive to their miniaturization. Summary of the Invention

[0003] The purpose of this application is to provide a control valve with a compact structure.

[0004] To achieve the above objectives, this application adopts the following technical solution: a fluid control component, comprising a valve body, a first valve core, and a second valve core. The valve body has a valve cavity and a plurality of first valve ports, the first valve ports being located in the wall defining the valve cavity. The first valve core has a first channel, at least a portion of the first valve core being located within the valve cavity, the first valve core being rotatable, and the first channel being selectively connected to the first valve ports. The first valve core has a receiving cavity, the first channel penetrating the wall defining the receiving cavity. The second valve core has a second channel, at least a portion of the second valve core being located in the receiving cavity, the second valve core being rotatable, and the second channel being selectively connected to the first channel.

[0005] The fluid control assembly provided in this application has at least a portion of a second valve core located within the receiving cavity of a first valve core, and the second valve core is rotatable. Simultaneously, at least a portion of the first valve core is located within the valve cavity of a valve body, and the first valve core is also rotatable. The second channel of the second valve core can selectively connect to the first channel of the first valve core, and the first channel can selectively connect to the first valve port of the valve body, thus enabling the second valve core to selectively connect to the first valve port of the valve body. It can be seen that the fluid control assembly provided in this application, by placing at least a portion of the second valve core within the receiving cavity of the first valve core, allows the second valve core to fully utilize the internal space of the first valve core, which, while ensuring the flow switching function, facilitates the miniaturization of the control valve. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the structure of a fluid control component provided in an embodiment of this application;

[0007] Figure 2 yes Figure 1 Cross-sectional view;

[0008] Figure 3 yes Figure 1 A schematic diagram of the cross-section;

[0009] Figure 4 yes Figure 2 Exploded view;

[0010] Figure 5 yes Figure 1 A schematic diagram of the structure of the first valve core in the middle;

[0011] Figure 6 yes Figure 5 A schematic diagram of the cross-section in the middle;

[0012] Figure 7 yes Figure 1 Assembly diagram of the first and second valve cores in the process;

[0013] Figure 8 yes Figure 1 A schematic diagram of the structure of the second valve core in the middle;

[0014] Figure 9 yes Figure 1 A structural schematic diagram of the first valve core from another angle;

[0015] Figure 10 yes Figure 1 A schematic diagram of the valve body in the diagram;

[0016] Figure 11 yes Figure 1 A schematic diagram of the second valve core flow regulation working mode;

[0017] Figure 12 yes Figure 1 Schematic diagram of the switching working mode of the first valve core flow channel;

[0018] Figure 13 yes Figure 1 A schematic diagram of another flow regulation working mode of the second valve core.

[0019] The annotations in the figure are explained as follows:

[0020] 1. First valve core; 10. Receiving cavity; 11. First channel; 111. Third channel; 101. First mating structure; 12. Second valve port; 13. Top plate; 14. Bottom plate; 15. Enclosure plate; 16. Extension plate; 17. Partition plate; 18. First positioning part; 19. Fourth positioning part; 103. Third mating structure; 1001. First protrusion; 1003. Third protrusion; 2. Second valve core; 22. Second channel; 202. Second mating structure; 23. 24. Mandrel; 25. Second positioning part; 26. Isolation part; 2002. Second protrusion; 3. Valve body; 301. First valve port; 302. Connection port; 31. Valve body flow channel; 30. Valve cavity; 34. Fourth mating structure; 35. Third positioning part; 3004. Fourth protrusion; 4. Sealing gasket; 40. Through hole; 400. Sealing part; 5. Sealing element; 50. Connecting hole; 51. Sealing block; 52. Elastic element; 6. Cover plate; 7. Connecting flange; 8. Sealing ring. Detailed Implementation

[0021] As can be seen from the background technology, how to provide a compact control valve has become an urgent technical problem to be solved.

[0022] To address the aforementioned problems, this application provides a fluid control component. To make the objectives, technical solutions, and advantages of this invention clearer, the embodiments are further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0023] Please refer to Figure 1-4 This application provides a fluid control assembly, including a valve body 3, a first valve core 1, and a second valve core 2. The valve body 3 has a valve cavity 30 and a plurality of first valve ports 301, which are located in the wall of the valve cavity 30. The first valve core 1 has a first channel 11, at least a portion of which is located in the valve cavity 30. The first valve core 1 is rotatable, and the first channel 11 is selectively connected to the first valve ports 301. The first valve core 1 has a receiving cavity 10, and the first channel 11 penetrates the wall of the receiving cavity 10. The second valve core 2 has a second channel 22, at least a portion of which is located in the receiving cavity 10. The second valve core 2 is rotatable, and the second channel 22 is selectively connected to the first channel 11.

[0024] It should be noted that the valve body can be the valve body of a single valve, or the valve body can be a flow channel plate. The flow channel plate has structures such as fluid channels and pump components, and the fluid channels connect the flow channels of the valve body with the channels in the pump components.

[0025] The fluid control assembly provided in this application has at least a portion of a second valve core located within the receiving cavity of a first valve core, and the second valve core is rotatable. Simultaneously, at least a portion of the first valve core is located within the valve cavity of a valve body, and the first valve core is also rotatable. The second channel of the second valve core can selectively connect to the first channel of the first valve core, and the first channel can selectively connect to the first valve port of the valve body, thus enabling the second valve core to selectively connect to the first valve port of the valve body. It can be seen that the fluid control assembly provided in this application, by placing at least a portion of the second valve core within the receiving cavity of the first valve core, allows the second valve core to fully utilize the internal space of the first valve core, which, while ensuring the flow switching function, facilitates the miniaturization of the control valve.

[0026] Combination Figure 2 and Figure 3 And refer to Figure 5 To increase the flow path, the first valve core 1 may also include a third channel 111. As the second valve core 2 rotates, the third channel 111 can connect two adjacent first valve ports 301. In the fluid control assembly, the third channel 111 is not connected to the receiving cavity 10. The first channel 11 can connect to at least one first valve port 301.

[0027] Specifically, refer to Figure 5 and Figure 6 The first valve core 1 includes a base plate 14, a surrounding plate 15, and an extension plate 16 arranged circumferentially along the surrounding plate 15. The base plate 14 and the surrounding plate 15 form a receiving cavity 10, as shown in the figure. Figure 4 In the first valve core 1, the extension plate 16 and the surrounding plate 15 are both fixed to the base plate 14. Along the radial direction of the first valve core 1, the extension plate 16 is located outside the surrounding plate 15. The surrounding plate 15 and two adjacent extension plates 16 each define a portion of the wall of the first channel 11. The first valve core 1 also includes a partition plate 17, which is fixed to the base plate 14 and located outside the surrounding plate 15. The partition plate 17, the surrounding plate 15, and the two adjacent extension plates 16 each define a portion of the wall of the third channel 111. The first valve core 1 also has an isolation cavity 170, which is defined by the partition plate 17. Along the radial direction of the first valve core 1, the isolation cavity 170 is located outside the third channel 111. The third channel 111 allows the flow channel to have a closed mode, and also increases the flow channel connectivity mode.

[0028] It should be noted that the extension plate 16, the surrounding plate 15, and the partition plate 17 are all fixed to the base plate 14. The fixing method is not limited and can be welding, bonding, injection molding, etc. The first valve core can also be integrally molded.

[0029] As can be seen, the control valve provided in this application, by setting at least part of the second valve core 2 in the receiving cavity of the first valve core 1, can make full use of the internal space of the first valve core while ensuring the flow switching function, thereby reducing the axial dimension of the control valve and facilitating its miniaturization. At the same time, the first valve core and the second valve core cooperate to selectively connect the first valve port 301 of the valve body flow channel 31. That is, the fluid control component also has multiple connection modes to regulate or close the flow of the valve port, thereby realizing multiple uses of the fluid control component and adapting to different working scenarios according to the actual needs of the user.

[0030] It can be seen that when the second valve core 2 is placed in the receiving cavity 10 of the first valve core 1 to reduce the volume of the fluid control component, the flow channel setting of the first valve core 1 is related to the final working mode. The working mode may include a flow channel connected state or a flow channel closed state.

[0031] It is easy to understand that the rotational torque of the first valve core 1 is greater than the rotational torque of the second valve core 2. The second valve core 2 can rotate independently relative to the first valve core 1, which can be achieved by the torque difference between the first valve core 1 and the second valve core 2. That is, when the second valve core 2 rotates relative to the first valve core 1, the torque driving the second valve core 2 to rotate is less than the torque driving the second valve core 2 to rotate. The second valve core 2 can rotate independently, or it can drive the first valve core 1 to rotate together. During rotation, the first valve core 1 can connect at least two first valve ports 301. The torque difference between the second valve core and the first valve core allows the second valve core to rotate independently relative to the first valve core. To reduce the rotational torque of the second valve core, increase the torque difference between the first and second valve cores, and avoid the first and second valve cores from moving together when not needed, in one specific embodiment, the surface of the second valve core 2 forming the second channel 22 includes a spherical surface, and the second channel 22 can connect at least two of the first channels 11.

[0032] The fluid control assembly further includes a seal 5, which includes a sealing block 51 and an elastic element 52. The elastic element 52 is disposed on the sealing block 51 in a compressed state, and the sealing block 51 abuts against the side wall defining the receiving cavity 10 and the surface of the second valve core 2 respectively. Each of the seals 5 is spaced apart along the circumference of the second valve core 2.

[0033] The first channel 11 has a second valve port 12 in the wall portion defining the receiving cavity 10, and the sealing member 5 has a connecting hole 50 corresponding to the second valve port 12.

[0034] Because the surface of the second channel 22 formed by the second valve core 2 includes a spherical surface, and the sealing blocks 51 are spaced apart along the circumference of the second valve core 2, the sealing blocks 51 abut against the spherical surface and the side wall of the defined receiving cavity 10 respectively. That is, the sealing member 5 and the second valve core 2 are in partial contact, which can reduce the contact area between the second valve core 2 and the sealing member 5, thereby reducing the friction of the second valve core 2 during rotation. This can reduce the torque required to drive the second valve core to rotate. It can be seen that by including a spherical surface on the surface of the second channel formed by the second valve core, it is beneficial to increase the torque difference between the first valve core and the second valve core, and avoid the relative movement of the first valve core and the second valve core in the non-demand state.

[0035] To further reduce the torque of the second valve core 2, in one specific embodiment, the elastic element 52 of the seal 5 can be a wave spring. Of course, in other embodiments, the elastic element 52 can also be a rubber sealing ring.

[0036] In summary, the second valve core 2 can rotate independently, and it can also drive the first valve core 1 to rotate together. During rotation, the first valve core 1 can connect at least two first valve ports 301. The torque difference between the second and first valve cores allows for independent rotation of the second valve core relative to the first valve core. In one specific embodiment, a ball valve core can rotate with low torque, while a column valve core rotates with high torque; the torque difference between the two ensures that they will not move together when not needed.

[0037] To enable the fluid control assembly to have a flow rate proportional regulation function, the second channel 22 has an opening 200 (shown in...). Figure 2 In the second embodiment, the opening 200 is located on the spherical surface, and the central angle corresponding to the circumferential extension of the second channel 22 along the spherical surface is greater than or equal to the central angle corresponding to the three adjacent second valve ports 12. That is, the opening of the second channel of the second valve core covers three adjacent second valve ports 12; of course, in other embodiments, the central angle corresponding to the circumferential extension of the second channel 22 along the spherical surface can also be greater than or equal to the central angle corresponding to the two adjacent valve ports. Of course, in another specific embodiment, the second channel 22 can also be disposed inside the second valve core, and the second channel has circumferentially spaced flow channels along the spherical surface of the second valve core, and at least two flow channels can be connected.

[0038] like Figure 4As shown, to improve sealing performance, the fluid control assembly also includes a sealing gasket 4, which is disposed between the valve body 3 and the first valve core 1. The sealing gasket 4 has through holes 40, which communicate with and correspond to the number of first valve ports 301. The sealing gasket 4 is a partially open cylindrical shape with radially penetrating through holes 40. The through holes 40 are spaced apart circumferentially, and each through hole 40 corresponds radially to a first valve port 301. Simultaneously, a sealing portion 400 is provided on the surface of the sealing gasket 4 opposite to the inner wall of the valve body 3. This sealing portion 400 is a continuous rib structure formed around the outer periphery of the corresponding through hole 40, and can radially abut against the outer periphery of the corresponding first valve port 301 on the valve body 3 side to form a reliable abutment seal. As shown in the figure, the sealing portion is an outwardly protruding strip, with a simple and reliable structure and good manufacturability. In other possible implementations, the sealing part can also be configured in other shapes, as long as a reliable abutting seal can be formed on the outer periphery of the first valve port based on establishing a conductive relationship with the first valve port corresponding to the corresponding flow channel. The sealing gasket 4 serves to seal the first valve port 301. The material of the sealing gasket 4 includes rubber. Of course, the material of the side of the sealing gasket 4 that contacts the valve core can also include a wear-resistant material, such as polytetrafluoroethylene.

[0039] It is easy to understand that the valve core 1 has an overall columnar structure, with the sealing gasket 4 surrounding it. Compared to the contact area between the second valve core and the seal, the contact area between the sealing gasket 4 and the first valve core 1 is larger, resulting in greater friction. Consequently, the torque required to drive the second valve core 2 is less than the torque required to drive the first valve core. The contact area between the second valve core 2 and the seal 5 is smaller. Therefore, when the second valve core 2 rotates, the torque difference between them prevents the first valve core 1 from deflecting due to similar torques, ensuring no unintended linkage. This allows for proportional adjustment and flow channel switching in different modes, further improving the sealing effect. Of course, in other embodiments, the shape of the second valve core is not limited, as long as the rotational torque of the first valve core is greater than that of the second valve core, and the torque difference ensures that the first and second valve cores do not move relative to each other in unintended states.

[0040] Continue to refer to Figure 6 and Figure 8In one specific embodiment, a first valve core 1 is provided with a first mating structure 101, and a second valve core 2 is provided with a second mating structure 202 that can mate with the first mating structure 101. When the second mating structure 202 is not in contact with the first mating structure 101, the second valve core 2 can rotate independently while the first valve core 1 remains stationary. When the second mating structure 202 abuts against the first mating structure 101, the second valve core 2 drives the first valve core 1 to rotate synchronously. The first valve core 1 has a first mating structure on the bottom wall of the defined receiving cavity, and the second valve core 2 has a second mating structure 202 on its bottom. As the second valve core rotates, the second channel can connect at least two first channels. When the second mating structure 202 abuts against the first mating structure 101, the second valve core 2 drives the first valve core 1 to rotate together. The first mating structure 101 includes a first protrusion 1001 disposed on the bottom wall of the defined receiving cavity of the first valve core 1, and the second mating structure 202 includes a second protrusion 2002 disposed on the bottom of the second valve core 2. The rotation radius regions of the first protrusion 1001 and the second protrusion 2002 overlap.

[0041] It should be noted that, taking the second valve core as an example, when projecting axially onto the second valve core, the rotation radius region of the second protrusion refers to the annular region formed with the center of the second valve core as the center and the second protrusion as the radius. Similarly, when projecting axially onto the first valve core, the first protrusion refers to the annular region formed with the center of the first valve core as the center and the first protrusion as the radius. The overlap between the rotation radius regions of the first and second protrusions means that, as the second valve core rotates, when the first and second protrusions abut against each other, at least a portion of the first protrusion can contact the first end face A or the second end face B of the second protrusion. Of course, to improve the driving effect when the second valve core drives the first valve core to rotate, the shapes of the first and second protrusions can be the same, and the first and second protrusions can be located on the same circumference.

[0042] In one specific embodiment, the first mating structure 101 includes a first protrusion 1001 disposed on the bottom wall of the defined receiving cavity of the first valve core 1, and the second mating structure 202 includes a second protrusion 2002 disposed on the bottom of the second valve core 2. The first protrusion 1001 includes a first end face A and a second end face B spaced apart circumferentially. When the second protrusion 2002 abuts against the first end face A or the second end face B of the first protrusion 1001, the second valve core can drive the first valve core to rotate. As the second valve core 2 continues to rotate, the second valve core 2 can drive the first valve core 1 to rotate to a designated position, thereby realizing multi-mode flow channel switching. In one specific embodiment, the first mating structure 101 and the second mating structure 202 are respectively limiting blocks, which can be fan-shaped limiting blocks. In other embodiments, the specific structure of the first mating structure 101 and the second mating structure 202 is not limited, and the positions of the first mating structure 101 and the second mating structure 202 are not limited, as long as the function of the second valve core 2 driving the first valve core 1 to rotate is achieved. Of course, in another specific embodiment, the first mating structure may be disposed on the bottom wall of the defined receiving cavity of the first valve core, and the second mating structure may be disposed on the bottom of the second valve core. One of the first mating structure and the second mating structure has a protrusion, and the other has an annular groove. The protrusion can rotate along the annular groove. The wall portion forming the annular groove includes a circumferential first wall and a circumferential second wall. When the protrusion abuts against the circumferential first wall or the circumferential second wall, the second valve core can drive the first valve core to rotate.

[0043] Similarly, the bottom of the first valve core 1 is provided with a third mating structure 103, and the valve body 3 is provided with a fourth mating structure 34 that mates with the third mating structure 103. When the third mating structure and the fourth mating structure come into contact, the first valve core 1 stops rotating, and the second valve core 2 can rotate in the opposite direction to the first valve core 1.

[0044] The third mating structure 103 includes a third protrusion 1003 disposed at the bottom of the first valve core 1, and the fourth mating structure 34 includes a fourth protrusion 3004 disposed on the bottom wall forming the valve cavity 30. The rotation radius region of the third protrusion and the radius region defined by the extension line of the circumferential edge of the fourth protrusion overlap.

[0045] It should be noted that the overlap between the rotation radius of the third protrusion and the radius defined by the extension line of the circumferential edge of the fourth protrusion means that, as the first valve core rotates, when the third and fourth protrusions abut, at least a portion of the third protrusion can contact the first end face C or the second end face D of the fourth protrusion. Of course, to improve the effect of stopping the rotation of the first valve core, the third and fourth protrusions can have the same shape, and they can be located on the same circumference.

[0046] Specifically, the third mating structure 103 includes a third protrusion 1003 disposed at the bottom of the first valve core 1, and the fourth mating structure 34 includes a fourth protrusion 3004 disposed on the bottom wall forming the valve cavity 30. The fourth protrusion 3004 includes a third end face C and a fourth end face D disposed circumferentially spaced apart. As the second valve core 2 drives the first valve core 1 to rotate, when the third protrusion 1003 abuts against the third end face C or the fourth end face D, the first valve core stops rotating, and the second valve core 2 can rotate in the opposite direction to the first valve core 1.

[0047] In one specific embodiment, the third mating structure 103 and the fourth mating structure 34 are both limiting blocks. In other embodiments, the specific structure of the third mating structure 103 and the fourth mating structure 34 is not limited, nor is their position limited, as long as they can prevent the first valve core 1 from continuing to rotate. In one specific embodiment, to reduce the initialization angle of the control valve, the number of fourth mating structures 34 on the valve body 3 can be two. Of course, in other embodiments, there can be only one fourth mating structure 34. When there are two fourth mating structures, the first valve core stops rotating when it contacts any one of the fourth mating structures; when the first valve core does not contact any of the first mating structures, the first valve core rotates with the second valve core.

[0048] Of course, in another specific embodiment, the third mating structure 103 can also be disposed at the bottom of the first valve core, and the fourth mating structure 34 can be disposed on the bottom wall forming the valve cavity. One of the third mating structure 103 and the fourth mating structure 34 has a protrusion and the other has an annular recess. The protrusion can rotate along the annular recess. The wall portion forming the annular recess includes a circumferential third wall and a circumferential fourth wall. When the protrusion abuts against the circumferential third wall or the circumferential fourth wall, the first valve core 1 stops rotating.

[0049] It should be noted that the second valve core 2 can rotate in the opposite direction to the first valve core 1, which means that the rotation direction of the second valve core 2 before the first valve core 1 stops rotating is opposite to the rotation direction of the second valve core 2 after the first valve core 1 stops rotating.

[0050] Let the rotation stroke of the second valve core be angle A, the angle between the second mating structure of the second valve core and the centerline of the second valve core be B, and the angle between the first mating structure of the first valve core and the centerline of the first valve core be C. The centerlines of the first and second valve cores are coaxial. Then, the rotation stroke of the second valve core satisfies A + 2B + C = 360°. In one specific embodiment, the rotation stroke A of the second valve core is ≥ 90°, and the value of A can also be A ≥ 180°, such as... Figure 11 As shown, when A is 270°, the second valve core can also close the first channel.

[0051] In one specific embodiment, the second valve core 2 includes an isolation portion 25. Projecting along the axial direction of the second valve core 2, the projection of the second mating structure 202 overlaps with the projection of the isolation portion 25. By placing the second mating structure below the isolation portion 25, the maximum effective flow path of the second channel can be ensured, while simultaneously connecting three adjacent second valve ports 12. Furthermore, flow rate ratio adjustment can be performed between the three adjacent second valve ports 12 to achieve large-angle flow rate ratio adjustment. The isolation portion 25 can close the first channel 11, which is opposite to the isolation channel 111.

[0052] The fluid control assembly also includes a connecting flange 7, which is fixedly connected to the first valve core 1. The first valve core 1 also includes a top plate 13, which is located on the side opposite to the bottom plate 14. The top plate 13 is fixedly connected to the surrounding plate 15, and the connecting flange 7 is fixedly connected to the top plate 13. The fixing method can be welding, snap-fitting, bonding, screwing or bolting, etc. The second valve core 2 includes a spindle 23, at least a portion of which protrudes from the connecting flange 7. The connecting flange 7 has a first recess 71 at one end embedded in the receiving cavity 10, and the first valve core 1 has a second recess 17. The first recess 71 and the second recess 17 respectively contact the sealing block 51 to axially limit the sealing block 51.

[0053] like Figure 4 As shown, in order to better fix the sealing block 51 and improve the sealing effect, the connecting flange 7 is provided with a first recess 71 at one end of the receiving cavity 10, and the first valve core 1 is provided with a second recess 17. The first recess 71 and the second recess 17 respectively contact the sealing block 51 to limit the sealing block 51 axially.

[0054] like Figure 1 As shown, the fluid control assembly also includes a drive device (9), which is connected to the spindle 23 of the second valve core 2. In one specific embodiment, a spline can be provided at the end of the spindle 23, and the drive device is connected to the second valve core 2 via the spline. When the second valve core 2 rotates, the first mating structure 101 on the second valve core 2 can drive the first valve core 1 to rotate through the second mating structure 202. In this way, the second valve core 2 can rotate independently to adjust the flow ratio of the second valve core 2 through the second channel 22. The second valve core 2 can also drive the first valve core 1 to rotate when it rotates, changing the flow channel mode. It can be seen that only one drive device is needed to drive and control the first valve core 1 and the second valve core 2, which is simple to control, compact in structure, and low in cost. In this embodiment, the drive device is shown in a block diagram. Of course, in other embodiments, separate drivers can be used to drive the first valve core and the second valve core respectively.

[0055] For details, please refer to Figure 4The bottom wall of the receiving cavity 10 of the first valve core 1 is provided with a second recess 17 that matches the shape of the sealing block 51. The lower end of the sealing block 51 contacts the second recess 17. The lower end of the connecting flange 7 is provided with a first recess 71 that matches the shape of the sealing block 51. The upper end of the sealing block 51 contacts the first recess 17 of the connecting flange 7. The first recess 71 and the second recess 17 are combined to form a cavity for receiving the sealing block 51. At the same time, the sealing block 51 abuts against the side wall of the receiving cavity 10 and the second valve core 2. An elastic member 52 is sleeved on the sealing block 51 and is disposed between the sealing block 51 and the second valve core 2 in a compressed state. In this way, the sealing block is received in the cavity formed by the first recess 71 and the second recess 17, which can further prevent the sealing block from moving and further improve the sealing effect. Of course, in other embodiments, the first recess and the second recess may not be on the same plane, but may contact the sealing block separately.

[0056] As can be seen, the control valve provided in this application has a sealing element 5 between the first valve core 1 and the second valve core 2, and a sealing gasket 4 between the outer periphery of the first valve core 1 and the side wall of the valve body 3. Utilizing the torque difference between the first valve core 1 and the second valve core 2, the second valve core 2 can rotate independently without rotating the first valve core 1, thereby achieving proportional flow regulation. When the first valve core 1 needs to rotate, the first mating structure of the first valve core 1 abuts against the second mating structure 202 of the second valve core 2, causing the second valve core 2 to rotate the first valve core 1 to a designated position, thus achieving multi-mode flow path switching. Simultaneously, the second valve core 2 can also perform proportional regulation and flow path switching in new modes. By embedding the second valve core 2 into the first valve core 1, proportional regulation and complex mode flow path switching can be achieved simultaneously. It can be seen that by combining a column valve and a ball valve, not only can the on / off switching of different flow paths be achieved, but the flow rate at the valve port can also be regulated.

[0057] like Figure 2 As shown, in one specific embodiment, the fluid control assembly further includes a connection port 302, which is located on the bottom wall or side wall of the valve body 3. The first valve port 301 and the connection port 302 communicate with the valve body flow channel 31. The first valve port 301 is located on the side wall defining the valve cavity 30, and the connection port 302 is located on the bottom wall or side wall of the valve body 3. Multiple connection ports 302 may have the same orientation; for example, multiple connection ports 302 may be located on the same end face. When the connection port 302 is located on the side wall of the valve body 3, the side wall of the valve body 3 may include a pipe, the fluid channel communicates with the pipe, and the contact point between the valve body 3 and the pipe can be considered as the connection port 302.

[0058] Continue to refer to Figure 6 and Figure 8In order to improve the stability of the second valve core 2 during rotation, in a specific embodiment, a first positioning part 18 is provided on the bottom wall of the receiving cavity 10, and a second positioning part 24 is provided at the bottom of the second valve core 2. When the second valve core rotates relative to the first valve core, the first positioning part (18) and the second positioning part 24 are in a limiting fit. One of the first positioning part 18 and the second positioning part 24 is a protrusion and the other is a hole. The protrusion can rotate in the hole.

[0059] Specifically, the first positioning part 18 formed on the bottom wall of the receiving cavity 10 is a columnar protrusion, and the second positioning part 24 formed on the bottom of the second valve core 2 is a circular hole wall. The circular hole wall and the columnar protrusion cooperate. Of course, in other embodiments, the shapes of the first and second positioning parts are not limited, as long as the radial limiting effect of the first valve core on the second valve core can be achieved, and the protrusion can rotate within the hole. For example, the protrusion can be a cylinder with an opening, and the cross-section of the protrusion is a discontinuous arc.

[0060] Similarly, please refer to Figure 9 and Figure 10 In order to improve the stability of the second valve core 2 during rotation, a third positioning part 35 is provided on the bottom wall of the valve cavity 30, and a fourth positioning part 19 is provided at the bottom of the first valve core 1. When the first valve core rotates relative to the valve body, the third positioning part 35 and the fourth positioning part 19 are in a limiting fit. One of the third positioning part 35 and the fourth positioning part 19 is a boss and the other is a groove. The boss can rotate in the groove.

[0061] Specifically, the third positioning part 35 formed on the bottom wall of the valve cavity 30 is a columnar protrusion, and the fourth positioning part 19 formed on the bottom of the first valve core 1 is an annular protrusion with a hollow cavity. The columnar protrusion is inserted into the hollow cavity of the annular protrusion. Of course, in other embodiments, the shapes of the third and fourth positioning parts are not limited, as long as they can achieve the radial limiting effect of the valve body on the first valve core and the protrusion can rotate within the hole. For example, the protrusion can be a cylinder with an opening, and the cross-section of the protrusion is a discontinuous arc.

[0062] Continue to refer to Figure 3 To improve the sealing effect, a sealing ring 8 is installed on the spindle 23 of the second valve core 2. The control valve also includes a cover plate 6, which is fixedly connected to the valve body 3. The spindle 23 protrudes from the cover plate 6. To improve sealing performance, the cover plate 6 and the valve body 3 can be fixed together by welding. In other embodiments, the cover plate 6 and the valve body 3 can also be fixed together by bonding, riveting, bolting, or other methods.

[0063] In one specific embodiment, to reduce the risk of high-temperature deformation of the first valve core 1 and better ensure the sealing effect of the second valve core 2, the material of the first valve core 1 can be polyphenylene sulfide (PPS) or a composite material containing polyphenylene sulfide. Of course, in other embodiments, the material of the first valve core 1 is not limited, and the material of the first valve core 1 can also be polyoxymethylene (POM) or other engineering plastics that meet the strength requirements.

[0064] like Figure 7 As shown, in one specific embodiment, the first valve core 1 has an axially penetrating through hole 40. On the one hand, this can prevent uneven thickness of the first valve core 1 and mold shrinkage and deformation during processing. On the other hand, it can also achieve the weight reduction of the first valve core 1.

[0065] The structure of the control valve has been described above. The operating modes of the control valve are described below.

[0066] The valve body flow channel 31 includes four flow channels a, b, e, and f arranged sequentially at intervals. Flow channels a, e, b, and f are respectively connected to the corresponding first valve ports 301. The first valve core 1 includes a third channel 111 and also has an isolation cavity 170 located outside the third channel 111. The first channel 11 has a second valve port 12 on the wall defining the receiving cavity 10. The second valve core 2 includes at least one of the following working positions:

[0067] In the first working position, the second channel 22 of the second valve core 2 corresponds to flow channel b, flow channel e and flow channel f;

[0068] In the second working position, the second channel 22 of the second valve core 2 corresponds to flow channel a, flow channel b and flow channel e;

[0069] In the third working position, the second channel 22 of the second valve core 2 corresponds to flow channel a, flow channel b and flow channel f;

[0070] In the fourth working position, the second channel 22 of the second valve core 2 corresponds to flow channel a, flow channel e and flow channel f;

[0071] In the fifth working position, the second channel 22 of the second valve core 2 corresponds to flow channel e and flow channel f;

[0072] In the sixth working position, the second channel 22 of the second valve core 2 corresponds to flow channel b and flow channel e;

[0073] In the seventh working position, the second channel 22 of the second valve core 2 corresponds to flow channel a, flow channel b and flow channel e;

[0074] The first valve core 1 includes at least one of the following operating switching positions:

[0075] In the first working switching position, the first channel 11 of the first valve core 1 corresponds to flow channel a, flow channel b and flow channel f respectively, and the isolation chamber 170 corresponds to flow channel e;

[0076] In the second working switching position, the third channel 111 of the first valve core 1 corresponds to flow channel b and flow channel e, and the first channel 11 of the first valve core 1, which is opposite to the third channel 111, corresponds to flow channel a and flow channel f.

[0077] In the third working switching position, the third channel 111 of the first valve core 1 corresponds to flow channel a and flow channel b, and the first channel 11 of the first valve core 1, which is opposite to the third channel 111, corresponds to flow channel e and flow channel f.

[0078] In the fourth working switching position, the isolation chamber 170 of the first valve core 1 corresponds to flow channel a, the two first channels 11 of the first valve core 1 adjacent to the third channel 111 correspond to flow channels b and flow channel f respectively, and the first channel 11 of the first valve core 1 opposite to the third channel 111 corresponds to flow channel e.

[0079] Correspondingly, the fluid control component includes at least one of the following operating modes:

[0080] In mode 1, the first valve core 1 is in the first working switching position, the second valve core 2 is in the first working position, the second channel 22 corresponds to two non-adjacent second valve ports 12, flow channels a and e are closed, and flow channel f is connected to flow channel b through the first channel 11 and the second channel 22.

[0081] In mode 2, the first valve core 1 is in the first working switching position, the second valve core 2 is in the second working position, the second channel 22 corresponds to two adjacent second valve ports 12, and the flow channel a is connected to the flow channel b through the first channel 11 and the second channel 22.

[0082] In mode 3, the first valve core 1 is in the first working switching position, the second valve core 2 is in the third working position, the second channel 22 corresponds to the three adjacent second valve ports 12, and the flow channel a is connected to the flow channel b and the flow channel f through the first channel 11 and the second channel 22 respectively.

[0083] Mode 4: The first valve core 1 is in the first working switching position, the second valve core 2 is in the fourth working position, the second channel 22 corresponds to the two adjacent second valve ports 12, and the flow channel a is connected to the flow channel f through the first channel 11 and the second channel 22.

[0084] Mode 5: The first valve core 1 is in the second working switching position, the second valve core 2 is in the fifth working position, the second channel 22 corresponds to two adjacent second valve ports 12, flow channel a is connected to flow channel f through the first channel 11, and flow channel e is connected to flow channel b through the third channel 111.

[0085] Mode 6: The first valve core 1 is in the third working switching position, the second valve core 2 is in the sixth working position, the second channel 22 corresponds to two adjacent second valve ports 12, the flow channel e is connected to the flow channel f through the first channel 11, and the flow channel a is connected to the flow channel b through the third channel 111.

[0086] In mode 7, the first valve core 1 is in the fourth working switching position, the second valve core 2 is in the seventh working position, the second channel 22 corresponds to two adjacent second valve ports 12, and the flow channel e is connected to the flow channel b through the first channel 11 and the second channel 22.

[0087] Mode 8: The first valve core 1 is in the fourth working switching position, the second valve core 2 is in the first working position, the second channel 22 is directly opposite three adjacent second valve ports 12, and the flow channel e is connected to the flow channel b and the flow channel f through the first channel 11 and the second channel 22 respectively.

[0088] In mode nine, the first valve core 1 is in the fourth working switching position, the second valve core 2 is in the fourth working position, the second channel 22 corresponds to two adjacent second valve ports 12, and the flow channel e is connected to the flow channel f through the first channel 11 and the second channel 22.

[0089] It should be noted that when the first valve core remains stationary and the second valve core rotates independently, the second valve core can stop at any position within the angular range. In this mode, the fluid control component operates in flow regulation mode, which enables proportional flow regulation. Specifically, the four rotation angles of the second valve core are used as examples, where flow channels a and e are defined as inlets, and flow channels b and f are defined as outlets. In other embodiments, those skilled in the art can define the inlets and outlets as needed.

[0090] It should be noted that the second valve core 2 can rotate independently, and the second valve core 2 can also drive the first valve core 1 to rotate together. During the rotation of the first valve core 1, it can close the valve body flow channel 31 or connect at least two first valve ports 301.

[0091] like Figure 11 As shown in Figure (A), the partition 17 of the first valve core 1 blocks the flow channel e, and the second valve core 2 blocks the first channel 11 of the first valve core 1, that is, blocks the flow channel a. At this time, all flow channels are closed.

[0092] Taking the clockwise rotation of the second valve core 2 as an example, as the second valve core 2 rotates, as... Figure 11 As shown in Figure (B), the second valve core 2 is connected to flow channel a. When the second valve core 2 rotates 90° clockwise, the second valve core 2 blocks flow channel f, and the second channel 22 is connected to flow channel a. At this time, the fluid enters the first channel 11 along flow channel a, enters the second channel 22 along the first channel 11, and flows out along flow channel b.

[0093] As the second valve core 2 continues to rotate, Figure 11 As shown in Figure (C), the second valve core 2 is connected to the flow channel f. When the second valve core 2 continues to rotate 90° clockwise, the second valve core 2 blocks the flow channel e. The second channel 22 connects the flow channels a, b, and f. At this time, the fluid enters the first channel 11 along the flow channel a, enters the second channel 22 along the first channel 11, and flows out along the flow channels b and f respectively.

[0094] As the second valve core 2 continues to rotate, Figure 11 As shown in Figure (D), the second valve core 2 regulates the flow rate of flow channels b and f. When the second valve core 2 continues to rotate clockwise by 90°, it blocks the flow channel opening b, and the second channel 22 connects flow channels a and f. At this time, the fluid enters the first channel 11 along flow channel a, then enters the second channel 22 along the first channel 11, and flows out along flow channel f. At this time, the second mating structure of the second valve core 2 and the first mating structure 101 of the first valve core 1 abut against each other. As the second valve core 2 continues to rotate, it drives the first valve core 1 to rotate together, realizing the working mode of flow channel switching.

[0095] For details, please refer to Figure 12 In Figures (E) and (F), the second valve core 2 drives the first valve core 1 to rotate clockwise by 45°. The first channel 11 connects flow channel a and flow channel f, and the third channel connects flow channel b and flow channel e. At this time, the fluid enters the first channel 11 along flow channel a and flows out along flow channel f in the first channel 11. At the same time, the fluid can also enter the third channel along flow channel e and flow out along flow channel b in the third channel.

[0096] The second valve core 2 continues to drive the first valve core 1 to rotate 90° clockwise, as... Figure 12 As shown in Figure (G), the first channel 11 connects flow channel e and flow channel f, and the third channel connects flow channel a and flow channel b. At this time, the fluid enters the third channel along flow channel a and flows out along flow channel b in the third channel; at the same time, the fluid can also enter the first channel 11 along flow channel e and flow out along flow channel f in the first channel 11.

[0097] The second valve core 2 continues to drive the first valve core 1 to rotate clockwise by 45°, as... Figure 12 As shown in Figure (H), the third channel of the first valve core 1 blocks flow channel a, the first channel 11 of the first valve core 1 connects to flow channel e, and the second channel 22 of the second valve core 2 connects to the first channel 11. At this time, the fluid enters the first channel 11 along flow channel e, enters the second channel 22 along the first channel 11, and flows out along flow channel b. At this time, the third mating structure of the first valve core 1 and the fourth mating structure of the valve body abut, the first valve core 1 stops rotating, and the second valve core 2 can rotate in the opposite direction to realize the flow regulation function after mode switching. It can be seen that the fluid control component provided in this embodiment can still be proportionally adjusted after changing to a new flow channel mode.

[0098] For details, please refer to Figure 13 In Figures (I) and (J), the first valve core 1 remains stationary, while the second valve core 2 rotates 90° counterclockwise relative to the first valve core 1. The third channel of the first valve core 1 blocks flow channel a, the first channel 11 of the first valve core 1 connects to flow channel e, and the second channel 22 of the second valve core 2 connects to the first channel 11. At this time, the fluid enters the first channel 11 along flow channel e, enters the second channel 22 along the first channel 11, and flows out along flow channels b and f respectively. In this mode, the flow rate ratio adjustment function can be realized.

[0099] The first valve core 1 remains stationary, while the second valve core 2 continues to rotate 90° counterclockwise relative to the first valve core 1. Figure 13 As shown in Figure (K), the third channel of the first valve core 1 blocks the flow channel a, the second valve core 2 blocks the flow channel b, the first channel 11 of the first valve core 1 is connected to the flow channel e, and the second channel 22 of the second valve core 2 is connected to the first channel 11. At this time, the fluid enters the first channel 11 along the flow channel e, enters the second channel 22 along the first channel 11, and flows out along the flow channel f in the second channel 22.

[0100] The above examples illustrate the principles and implementation methods of the present invention. These embodiments are merely illustrative and intended to aid in understanding the method and core concepts of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the scope of protection of the present invention.

Claims

1. A fluid control component, characterized in that, The device includes a valve body (3), a first valve core (1), and a second valve core (2). The valve body (3) has a valve cavity (30) and a plurality of first valve ports (301). The first valve ports (301) are located in the wall that defines the valve cavity (30). The first valve core (1) has a first channel (11). At least a portion of the first valve core (1) is located in the valve cavity (30). The first valve core (1) is rotatable. The first channel (11) is selectively connected to the first valve ports (301). The first valve core (1) has a receiving cavity (10) through which the first channel (11) extends through the wall defining the receiving cavity (10); the second valve core (2) has a second channel (22) at least part of the second valve core (2) is located in the receiving cavity (10), the second valve core is rotatable, and the second channel (22) is selectively connected to the first channel (11).

2. The fluid control assembly as claimed in claim 1, characterized in that, It also includes a drive device (9), the second valve core (2) has a spindle (23), the drive device (9) is connected to the spindle (23) in a transmission, and the second valve core (2) can rotate independently or drive the first valve core (1) to rotate together.

3. The fluid control assembly as described in claim 2, characterized in that, The first valve core (1) includes a first mating structure (101) defining the bottom wall of the receiving cavity (10), and the second valve core (2) includes a second mating structure (202) at its bottom. The second channel (22) can connect at least two of the first channels (11). The second mating structure (202) can abut against the first mating structure (101) so that the second valve core (2) drives the first valve core (1) to rotate together. The first valve core (1) also includes a third mating structure (103), and the valve body (3) includes a fourth mating structure (34) that cooperates with the third mating structure (103). The third mating structure (103) can abut against the fourth mating structure (34) so ​​that the first valve core (1) stops rotating.

4. The fluid control assembly as claimed in claim 3, characterized in that, The first mating structure (101) includes a first protrusion (1001) disposed on the first valve core (1) defining the bottom wall of the receiving cavity, and the second mating structure (202) includes a second protrusion (2002) disposed on the bottom of the second valve core (2), and the rotation radius regions of the first protrusion (1001) and the second protrusion (2002) overlap. The third mating structure (103) includes a third protrusion (1003) disposed at the bottom of the first valve core (1), and the fourth mating structure (34) includes a fourth protrusion (3004) disposed on the bottom wall defining the valve cavity (30). The rotation radius region of the third protrusion (1003) and the radius region defined by the extension line of the circumferential edge of the fourth protrusion (3004) overlap.

5. The fluid control assembly according to any one of claims 1-4, characterized in that, The first valve core (1) further includes a third channel (111), which is not connected to the receiving cavity (10). The third channel (111) can connect two adjacent first valve ports (301), and the first channel can connect at least one first valve port (301).

6. The fluid control assembly as claimed in claim 5, characterized in that, The first valve core (1) includes a base plate (14), a surrounding plate (15), and an extension plate (16) arranged circumferentially along the surrounding plate (15). The base plate (14) and the surrounding plate (15) form the receiving cavity (10). The extension plate (16) and the surrounding plate are both fixed to the base plate (14). Along the radial direction of the first valve core (1), the extension plate (16) is located outside the surrounding plate (15). The surrounding plate (15) and two adjacent extension plates (16) each define a portion of the wall of the first channel (11). The first valve core (1) further includes a partition (17) fixed to the base plate (14) and located outside the enclosure plate (15). The partition (17), the enclosure plate (15) and the two adjacent extension plates (16) all define a portion of the wall of the third channel (111). The first valve core (1) also has an isolation cavity (170). The partition (17) defines a portion of the wall of the isolation cavity (170). Along the radial direction of the first valve core (1), the isolation cavity (170) is located outside the third channel (111).

7. The fluid control assembly according to any one of claims 1-4, characterized in that, The second valve core (2) is formed by the surface of the second channel (22) including a spherical surface, and the second channel (22) is capable of connecting at least two of the first channels (11); The fluid control assembly further includes a seal (5), which includes a sealing block (51) and an elastic element (52). The elastic element (52) is disposed on the sealing block (51) in a compressed state, and the sealing block (51) abuts against the side wall defining the receiving cavity (10) and the surface of the second valve core (2). Each of the seals (5) is spaced apart along the circumference of the second valve core (2). The first channel (11) has a second valve port (12) in the wall defining the receiving cavity (10), and the seal (5) has a connecting hole (50) corresponding to the second valve port (12).

8. The fluid control assembly as claimed in claim 7, characterized in that, The second channel (22) has an opening (200) located on the sphere, and the central angle corresponding to the circumferential extension of the second channel (22) along the sphere is greater than or equal to the central angle corresponding to at least two adjacent second valve ports (12).

9. The fluid control assembly as claimed in claim 6, characterized in that, The fluid control assembly also includes a sealing gasket (4), which is disposed between the valve body (3) and the first valve core (1). The sealing gasket (4) has a through hole (40), which is connected to the first valve port (301) and the number of through holes corresponds to the number of through holes (40).

10. The fluid control assembly as claimed in claim 5, characterized in that, The second valve core (2) includes an isolation portion (25) projected along the axial direction of the second valve core (2). The bottom of the second valve core (2) includes a second mating structure (202). The projection of the second mating structure (202) overlaps with the projection of the isolation portion (25). The isolation portion (25) is capable of closing the first channel (11) which is disposed opposite to the third channel (111) of the first valve core (1).

11. The fluid control assembly as claimed in claim 7, characterized in that, It also includes a connecting flange (7), which is fixedly connected to the first valve core (1), and the second valve core (2) has a spindle (23), at least a portion of which protrudes from the connecting flange (7); the connecting flange (7) is provided with a first recess (71) at one end embedded in the receiving cavity (10), and the first valve core (1) is provided with a second recess (17); the first recess (71) and the second recess (17) respectively contact the sealing block (51) to axially limit the sealing block (51); The fluid control assembly also includes a connection port (302), which is located on the bottom wall or side wall of the valve body (3).

12. The fluid control assembly according to any one of claims 1-4, characterized in that, A first positioning part (18) is provided on the bottom wall of the receiving cavity (10), and a second positioning part (24) is provided at the bottom of the second valve core (2). The first positioning part (18) and the second positioning part (24) are in clearance fit or sliding contact, and the second valve core (2) can rotate relative to the first valve core (1). A third positioning part (35) is provided on the bottom wall of the valve cavity (10), and a fourth positioning part (19) is provided at the bottom of the first valve core (1). The third positioning part (35) and the fourth positioning part (19) are in clearance fit or sliding contact, and the first valve core (1) can rotate relative to the valve body (3).

13. The fluid control assembly as claimed in any one of claims 6 or 8-11, characterized in that, The valve body flow channel (31) includes four flow channels arranged sequentially at intervals: flow channel (a), flow channel (b), flow channel (e), and flow channel (f). Flow channels (a), (e), (b), and (f) are respectively connected to the corresponding first valve port (301). The first valve core (1) includes a third channel (111) and also has an isolation cavity (170) located outside the third channel (111). The first channel (11) has a second valve port (12) on the wall defining the receiving cavity (10). The second valve core (2) includes at least one of the following working positions: In the first working position, the second channel (22) of the second valve core (2) corresponds to the flow channel (b), the flow channel (e), and the flow channel (f); In the second working position, the second channel (22) of the second valve core (2) corresponds to the flow channel (a), the flow channel (b) and the flow channel (e); In the third working position, the second channel (22) of the second valve core (2) corresponds to the flow channel (a), the flow channel (b) and the flow channel (f); In the fourth working position, the second channel (22) of the second valve core (2) corresponds to the flow channel (a), the flow channel (e), and the flow channel (f); In the fifth working position, the second channel (22) of the second valve core (2) corresponds to the flow channel (e) and the flow channel (f); In the sixth working position, the second channel (22) of the second valve core (2) corresponds to the flow channel (b) and the flow channel (e); In the seventh working position, the second channel (22) of the second valve core (2) corresponds to the flow channel (a), the flow channel (b) and the flow channel (e); The first valve core (1) includes at least one of the following operating switching positions: In the first working switching position, the first channel (11) of the first valve core (1) corresponds to the flow channel (a), the flow channel (b) and the flow channel (f) respectively, and the isolation chamber (170) corresponds to the flow channel (e); In the second working switching position, the third channel (111) of the first valve core (1) corresponds to the flow channel (b) and the flow channel (e), and the first channel (11) of the first valve core (1) opposite to the third channel (111) corresponds to the flow channel (a) and the flow channel (f); In the third working switching position, the third channel (111) of the first valve core (1) corresponds to the flow channel (a) and the flow channel (b), and the first channel (11) of the first valve core (1) opposite to the third channel (111) corresponds to the flow channel (e) and the flow channel (f); In the fourth working switching position, the isolation chamber (170) of the first valve core (1) corresponds to the flow channel (a), the two first channels (11) of the first valve core (1) adjacent to the third channel (111) correspond to the flow channel (b) and the flow channel (f) respectively, and the first channel (11) of the first valve core (1) opposite to the third channel (111) corresponds to the flow channel (e).

14. The fluid control assembly as claimed in claim 13, characterized in that, The fluid control component includes at least one of the following operating modes: In mode 1, the first valve core (1) is in the first working switching position, the second valve core (2) is in the first working position, the second channel (22) corresponds to two non-adjacent second valve ports (12), the flow channel (a) and the flow channel (e) are closed, and the flow channel (f) is connected to the flow channel (b) through the first channel (11) and the second channel (22); Mode 2: The first valve core (1) is in the first working switching position, the second valve core (2) is in the second working position, the second channel (22) corresponds to two adjacent second valve ports (12), and the flow channel (a) is connected to the flow channel (b) through the first channel (11) and the second channel (22); Mode 3, the first valve core (1) is in the first working switching position, the second valve core (2) is in the third working position, the second channel (22) corresponds to the three adjacent second valve ports (12), and the flow channel (a) is connected to the flow channel (b) and the flow channel (f) through the first channel (11) and the second channel (22) respectively; Mode 4: The first valve core (1) is in the first working switching position, the second valve core (2) is in the fourth working position, the second channel (22) corresponds to two adjacent second valve ports (12), and the flow channel (a) is connected to the flow channel (f) through the first channel (11) and the second channel (22); Mode 5, the first valve core (1) is in the second working switching position, the second valve core (2) is in the fifth working position, the second channel (22) corresponds to two adjacent second valve ports (12), the flow channel (a) is connected to the flow channel (f) through the first channel (11), and the flow channel (e) is connected to the flow channel (b) through the third channel (111); Mode 6, the first valve core (1) is in the third working switching position, the second valve core (2) is in the sixth working position, the second channel (22) corresponds to two adjacent second valve ports (12), the flow channel (e) is connected to the flow channel (f) through the first channel (11), and the flow channel (a) is connected to the flow channel (b) through the third channel (111); Mode 7, the first valve core (1) is in the fourth working switching position, the second valve core (2) is in the seventh working position, the second channel (22) corresponds to two adjacent second valve ports (12), and the flow channel (e) is connected to the flow channel (b) through the first channel (11) and the second channel (22); Mode 8, the first valve core (1) is in the fourth working switching position, the second valve core (2) is in the first working position, the second channel (22) is directly opposite three adjacent second valve ports (12), and the flow channel (e) is connected to the flow channel (b) and the flow channel (f) through the first channel (11) and the second channel (22) respectively; Mode 9, the first valve core (1) is in the fourth working switching position, the second valve core (2) is in the fourth working position, the second channel (22) corresponds to two adjacent second valve ports (12), and the flow channel (e) is connected to the flow channel (f) through the first channel (11) and the second channel (22).

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