control valve

Abstract

This invention discloses a control valve, comprising a valve body and a valve core. The valve body includes a sidewall portion, and the control valve has a valve cavity. The control valve includes at least five channels, one end of each channel communicating with the valve cavity, and the other end forming a valve port of the control valve. The valve core includes an internal conducting cavity, multiple external conducting cavities, a first partition, and a second partition. The first partition is located between the internal and external conducting cavities, and the second partition is located between two adjacent external conducting cavities. The first partition has a connecting hole, through which the internal conducting cavity communicates with a portion of the external conducting cavities. The channels include a first flow path and a second flow path. Rotating the valve core can open or close two corresponding valve ports through the first flow path, the internal conducting cavity, the connecting hole, and the external conducting cavities, and / or, rotating the valve core can open or close two corresponding valve ports through the second flow path and one external conducting cavity. This enables fluid control of multiple flow paths, making it more convenient and compact in use.

Description

Technical Field

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

[0002] Some systems require multi-channel control valves to control flow paths, such as motor vehicles. Currently, multiple control valves are typically used for control. If a single control valve could be provided to control the fluid in multiple flow paths, it would be more convenient and compact to use. Summary of the Invention

[0003] The purpose of this invention is to provide a control valve that enables fluid control of multiple flow paths, making it more convenient and compact to use.

[0004] This invention provides a control valve, including a valve body and a valve core. The valve body includes a sidewall portion, and the control valve has a valve cavity. The sidewall portion is the peripheral wall of the valve cavity or at least a part of the peripheral wall. The valve core is rotatable. The control valve includes at least five channels, one end of each channel passing through the sidewall portion and communicating with the valve cavity, and the other end of each channel forming the valve port of the control valve. The valve core includes an internal conducting cavity, multiple external conducting cavities, a first partition, and a second partition. The multiple external conducting cavities are distributed on the outer periphery of the internal conducting cavity. The first partition is located between the internal conducting cavity and the external conducting cavities, and the second partition is located between two adjacent external conducting cavities. Between the cavities; the first partition has a connecting hole, the internal connecting cavity is connected to a portion of the external connecting cavities through the connecting hole, and each external connecting cavity is separated into an independent space by the second partition; the channel of the control valve includes a first flow channel and a plurality of second flow channels, the first flow channel is connected to the external connecting cavity through the internal connecting cavity, and the second flow channels are connected to the external connecting cavities, rotating the valve core can open or close the corresponding two valve ports through the first flow channel, the internal connecting cavity, the connecting hole and the external connecting cavity, and / or, rotating the valve core can open or close the corresponding two valve ports through the second flow channel and one external connecting cavity.

[0005] According to an embodiment of the present invention, the control valve core includes an internal conducting cavity, multiple external conducting cavities, a first partition, and a second partition. The first partition is located between the internal and external conducting cavities, separating them. The first partition has a connecting hole, allowing the internal conducting cavity to communicate with a portion of the external conducting cavities. The second partition is located between two adjacent external conducting cavities, dividing each external conducting cavity into an independent space. In this embodiment, rotating the valve core allows the corresponding two valve ports to be opened or closed through one external conducting cavity and the second flow channel. Alternatively, rotating the valve core allows the valve to be opened or closed through the first flow channel, the internal conducting cavity, the connecting hole, and the external conducting cavities. This allows the control valve to enable different communication methods between multiple valve ports, allowing one control valve to control multiple flow paths, making it more convenient and compact in use. Attached Figure Description

[0006] Figure 1 This is an exploded structural diagram of the control valve provided in the first embodiment of the present invention;

[0007] Figure 2 yes Figure 1 The diagram shows a partial cross-sectional view of the control valve at one of its locations.

[0008] Figure 3 yes Figure 1 The diagram shows a partial cross-sectional view of the control valve at another location.

[0009] Figure 4 yes Figure 1 The diagram shows a three-dimensional structural schematic of the valve core of the control valve.

[0010] Figure 5 yes Figure 4 The diagram shows a three-dimensional schematic of the cross-sectional structure of the valve core at one of its locations.

[0011] Figure 6 yes Figure 4 A three-dimensional schematic diagram of the cross-sectional structure of the valve core at another location is shown in the image.

[0012] Figure 7 yes Figure 1 The diagram shows the structure of the control valve from a first-person perspective.

[0013] Figure 8 yes Figure 7 A schematic diagram of the cross-sectional structure along the AA direction;

[0014] Figure 9 yes Figure 1 The diagram shows the structure of the control valve from a second perspective.

[0015] Figure 10 yes Figure 9 A schematic diagram of the cross-sectional structure along the BB direction;

[0016] Figure 11 yes Figure 4 The diagram shows the structure of the valve core from one of the views.

[0017] Figure 12 yes Figure 11 A schematic diagram of the cross-sectional structure along the CC direction;

[0018] Figure 13 yes Figure 11 A schematic diagram of the cross-sectional structure along the DD direction;

[0019] Figure 14 yes Figure 11 A schematic diagram of the cross-sectional structure along the EE direction;

[0020] Figure 15 yes Figure 11 A schematic diagram of the cross-sectional structure along the FF direction;

[0021] Figure 16 yes Figure 4 The diagram shows a three-dimensional structural schematic of the first sector segment of the valve core.

[0022] Figure 17 yes Figure 4 The diagram shows a three-dimensional structural schematic of the second sector of the valve core.

[0023] Figure 18 yes Figure 4 The diagram shows a three-dimensional structural schematic of the third sector of the valve core.

[0024] Figure 19 yes Figure 4 The diagram shows a three-dimensional structure of the fourth sector of the valve core.

[0025] Figure 20 yes Figure 1 The diagram shows the structure of the control valve from a third-person perspective.

[0026] Figure 21 yes Figure 1 The diagram shows the position of the valve core and the flow path of the control valve in the first operating mode.

[0027] Figure 22 yes Figure 1 The diagram shown is a schematic block diagram illustrating the connection method of the valve port in the first operating mode of the control valve.

[0028] Figure 23 yes Figure 1The diagram shows the position of the valve core and the flow path of the control valve in the second operating mode.

[0029] Figure 24 yes Figure 1 The diagram shown is a schematic block diagram illustrating the connection method of the valve port in the second operating mode.

[0030] Figure 25 yes Figure 1 The diagram shows the position of the valve core and the flow path of the control valve in the third operating mode.

[0031] Figure 26 yes Figure 1 The diagram shown is a schematic block diagram illustrating the connection method of the valve port in the third operating mode of the control valve.

[0032] Figure 27 yes Figure 1 The diagram shows the position of the valve core and the flow path of the control valve in the fourth operating mode.

[0033] Figure 28 yes Figure 1 The diagram shows the connection method of the valve port in the fourth operating mode of the control valve.

[0034] Figure 29 This is an exploded structural diagram of the control valve provided in the second embodiment of the present invention;

[0035] Figure 30 yes Figure 29 The image shows a partial cross-sectional view of the control valve at one of its locations;

[0036] Figure 31 yes Figure 29 The diagram shows a three-dimensional structural schematic of the valve core of the control valve.

[0037] Figure 32 yes Figure 29 The diagram shows the position of the valve core and the flow path of the control valve in the first operating mode.

[0038] Figure 33 yes Figure 29 The diagram shown is a schematic block diagram illustrating the connection method of the valve port in the first operating mode of the control valve.

[0039] Figure 34 yes Figure 29 The diagram shows the position of the valve core and the flow path of the control valve in the second operating mode.

[0040] Figure 35 yes Figure 29 The diagram shown is a schematic block diagram illustrating the connection method of the valve port in the second operating mode.

[0041] Figure 36 yes Figure 29 The diagram shows the position of the valve core and the flow path of the control valve in the third operating mode.

[0042] Figure 37 yes Figure 29 The diagram shown is a schematic block diagram illustrating the connection method of the valve port in the third operating mode of the control valve.

[0043] Figure 38 yes Figure 29 The diagram shows the position of the valve core and the flow path of the control valve in the fourth operating mode.

[0044] Figure 39 yes Figure 29 The diagram shows a schematic of the valve port connection method in the fourth operating mode of the control valve. Detailed Implementation

[0045] The features and exemplary embodiments of various aspects of the present invention will now be described in detail. 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. In this document, relational terms such as "first" and "second" are used merely to distinguish one component from another that has the same name, and do not necessarily require or imply any such actual relationship or order between these components.

[0046] like Figures 1 to 3 As shown, this embodiment of the invention provides a control valve 1, including a valve body 10, a valve core 20, and a first sealing member 41. The valve body 10 includes a side wall portion 11, and the control valve 1 has a valve cavity 101. The side wall portion 11 is the peripheral wall of the valve cavity 101 or at least a part of the peripheral wall. The first sealing member 41 is located between the valve core 20 and the side wall portion 11. The valve core 20 can rotate under a drive. The control valve 1 may also include a drive device 50 and a sealing ring 43. The drive device 50 includes a drive component, which can be a motor or a motor and a reduction gear set. The valve core 20 can rotate under the drive of the drive component within the drive device 50. Figure 1 In the valve body 10, a bottom wall portion 12 and a top wall portion 13 are also included. The bottom wall portion 12, the top wall portion 13, and the side wall portion 11 enclose a valve cavity 101. A sealing ring 43 is located between the top wall portion 13 and the valve core 20. At least a portion of the side wall portion 11 is located between the bottom wall portion 12 and the top wall portion 13. One of the bottom wall portion 12 and the top wall portion 13 is integrally formed with the side wall portion 11, and the other is sealed to the side wall portion 11, for example, in... Figure 1In the valve body 10, the top wall 13 and the side wall 11 are integrally formed. The bottom wall 12 is fixedly connected to the side wall 11 by welding and is sealed to prevent fluid leakage. The sealing ring 43 is located between the top wall 13 and the valve core 20. During assembly, the valve core 20 is assembled from the bottom to the top of the valve body 10, reducing the deformation of the sealing ring 43 and improving its sealing performance. The control valve 1 includes at least five channels 30. One end of each channel 30 passes through the side wall 11 and communicates with the valve cavity 101. The other end of each channel 30 forms the valve port 102 of the control valve 1, through which fluid can enter or leave the control valve 1.

[0047] See Figure 1 In this embodiment, the first sealing element 41 has an arc-shaped cross-section, and limiting surfaces are located on both sides of its circumference. The side wall portion 11 of the valve body 10 includes a mating surface. The limiting surfaces and the mating surfaces abut against each other to limit the first sealing element 41. Because the first sealing element 41 has an arc-shaped cross-section, the valve core 20 is prone to eccentricity during the compression of the first sealing element 41 by the valve core 20, affecting the rotation of the valve core 20. Therefore, in this embodiment, the control valve 1 may also include a second sealing element 42. The second sealing element 42 and the first sealing element 41 are respectively located on both sides of the valve core 20 in the radial direction, so that both the second sealing element 42 and the first sealing element 41 exert force on the valve core 20, keeping the valve core 20 coaxial with the side wall portion 11 and improving the stability of the rotation of the valve core 20. At least a portion of the first seal 41 and the second seal 42 may be made of rubber material. For example, the first seal 41 and the second seal 42 may each include a fixedly connected elastic element and a seal. The elastic element may be formed by processing rubber material, and the seal may be formed by processing Teflon.

[0048] To facilitate the assembly of control valve 1 with other components in the fluid control system and improve the integration of control valve 1 with other components, in some embodiments, such as Figures 1 to 3 The valve body 10 also includes a mounting portion 14, which is fixedly connected to the side wall portion 11. For example, the mounting portion 14 and the side wall portion 11 can be integrally formed. The mounting portion 14 has a mounting plane, through which the valve port 102 of the control valve 1 passes, so that all the valve ports 102 of the control valve 1 are arranged on the mounting plane and all the valve ports 102 face the same direction. This can relatively simplify the assembly steps of the control valve 1 with other components and reduce leakage points in the connection parts, thereby increasing the reliability of the seal. The first sealing element 41 has an opening 411 that corresponds one-to-one with the valve port 102. The guiding cavity of the valve core 20 is connected to the valve port 102 through the opening 411 of the first sealing element 41.

[0049] like Figures 3 to 6The valve core 20 has a columnar structure and includes a top plate 201, a bottom plate 202, an internal conduction cavity 21, multiple external conduction cavities 22, a first partition 23, and a second partition 24. Along the height direction of the valve core 20, the multiple external conduction cavities 22, the first partition 23, and the second partition 24 are located between the top plate 201 and the bottom plate 202, and the internal conduction cavity 21 is located between the top plate 201 and the bottom plate 202 and penetrates the bottom plate 202. At least a portion of the external conductive cavities 22 are distributed on the outer periphery of the internal conductive cavity 21. The first partition 23 is located between the internal conductive cavity 21 and the external conductive cavity 22, and the second partition 24 is located between two adjacent external conductive cavities 22. The main body of the first partition 23 is a hollow cylindrical structure. The first partition 23 has a connecting hole 231. The internal conductive cavity 21 is connected to a number of external conductive cavities 22 through the connecting hole 231. Each external conductive cavity 22 is separated into an independent space by the second partition 24. The rotary valve core 20 can open or close two valve ports corresponding to the external conductive cavity 22 through one external conductive cavity 22, and / or, the rotary valve core 20 can open or close two corresponding valve ports through the internal conductive cavity 21, the connecting hole 231, and the external conductive cavity 22. One of the two valve ports corresponds to the internal conductive cavity 21, and the other corresponds to the external conductive cavity 22. With the above settings, one control valve 1 can control multiple flow paths, making it more convenient and compact to use.

[0050] Further reading Figure 5 In some embodiments, the valve core 20 further includes a connecting post 28 and a connecting rib 29. The connecting post 28 is a hollow column structure, and an internal conductive cavity 21 is formed between the outer surface of the connecting post 28 and the inner surface of the first partition 23. The connecting rib 29 is connected between the outer surface of the connecting post 28 and the inner surface of the first partition 23 to enhance the structural strength of the valve core 20.

[0051] like Figure 1 and Figure 6 In some embodiments, the first partition 23 and the second partition 24 can be fixedly connected as an integral structure by injection molding process; when the control valve 1 also includes a first sealing member 41, the first sealing member 41 is located between the valve core 20 and the side wall portion 11, one side surface of the first sealing member 41 in the thickness direction contacts and seals the surface of the second partition 24, and the other side surface of the first sealing member 41 in the thickness direction contacts and seals the inner surface of the side wall portion 11.

[0052] like Figures 7 to 11In some embodiments, the valve core 20 includes a transmission connection portion 25, a conduction portion 26, and a support portion 27. At least a portion of the transmission connection portion 25 and the support portion 27 are located on the connecting post 28. Along the height direction of the valve core 20, the conduction portion 26 is located between the transmission connection portion 25 and the support portion 27. In this case, the conduction portion 26 is a structure formed by the top plate 201, the bottom plate 202, and the components located between the top plate 201 and the bottom plate 202. The transmission connection portion 25 extends from the top plate 201 towards... The support portion 27 protrudes away from the base plate 202 and away from the transmission connection portion 25. Both the transmission connection portion 25 and the support portion 27 are limitedly connected to the valve body 10. The transmission connection portion 25 is limitedly connected to the top wall portion 13 of the valve body 10 and is connected to the drive component in the drive device. The support portion 27 is limitedly connected to the bottom wall portion 12 of the valve body 10 to ensure stable rotation of the valve core 20. The internal guiding cavity 21 and the external guiding cavity 22 are both located in the guiding portion 26. Figure 8 In the middle, along the axial direction of the valve core 20, that is, along the height direction of the valve core 20, there is a space between one end of the conducting part 26 and the bottom wall part 12. Figure 10 In the case where the control valve includes a first seal 41, there is also a space between one end of the first seal 41 in the height direction and the bottom wall portion 12.

[0053] like Figure 1 , Figure 2 , Figure 8 and Figure 10 The control valve 1's channel 30 includes a first flow channel 31. One end of the first flow channel 31 penetrates the side wall portion 11 to form a first communication port 311, and the other end of the first flow channel 31 forms a first valve interface 312. The first communication port 311 is located at one end of the side wall portion 11 in the height direction. The conducting portion 26 of the valve core 20 and the first communication port 311 are arranged along the height direction of the side wall portion 11. Figure 2 , Figure 8 and Figure 10 In the middle, along the height direction of the side wall portion 11, the first connecting port 311 is located between the bottom plate 202 and the bottom wall portion 12, that is, the first connecting port 311 is located in the area between one end of the guide portion 26 and the bottom wall portion 12. At the same time, the first connecting port 311 is also located in the area between one end of the first sealing member 41 and the bottom wall portion 12. In any working mode of the valve core 20, the first valve interface 312 is connected to the internal guide cavity 21 through the first connecting port 311 and the valve cavity 101. That is, at any rotation angle, the fluid flowing into the control valve from the first valve interface 312 directly enters the valve cavity 101 through the first connecting port 311 and flows into the internal guide cavity 21 from the valve cavity 101.

[0054] like Figure 1 , Figure 3 and Figure 4In some embodiments, the channel 30 of the control valve 1 further includes a plurality of second flow channels 32. One end of each second flow channel 32 penetrates the sidewall portion 11 to form a second communication port 321, and the other end of the second flow channel 32 forms a second valve interface 322. Along the height direction of the sidewall portion 11, the second communication port 321 is located between the bottom plate 202 and the top plate 201. The location of the second communication port 321 corresponds to the location of the external conductive cavity 22, facilitating fluid communication between the external conductive cavity 22 and the second communication port 321. The external conductive cavity 22 includes a plurality of first cavities 221 and a plurality of second cavities 222. Along the height direction of the valve core 20, the first cavity 221 has a cavity... The longitudinal cross-sectional area of ​​the opening is greater than or equal to twice the longitudinal cross-sectional area of ​​the opening of the second cavity 222. The first cavity 221 corresponds to two second valve interfaces 322, and the second cavity 222 corresponds to one second valve interface 322. The rotary valve core 20 can connect the two second valve interfaces 322 corresponding to the first cavity 221 through the first cavity 221 and the second connecting port 321. A portion of the second cavities 222 are connected to the internal connecting cavity 21 through the connecting hole 231. The rotary valve core 20 can connect the first valve interface 312 and the second valve interface 322 corresponding to the second cavity 222 through the internal connecting cavity 21, the connecting hole 231 and the second cavity 222.

[0055] Further reading Figures 11 to 15 Along the height direction of the valve core 20, the valve core 20 can be provided with four layers of external conductive cavities 22, so as to... Figure 11 From the bottom plate 202 to the top plate 201, the four external conductive cavities are respectively a first layer, a second layer, a third layer, and a fourth layer. In the area of ​​the first layer of external conductive cavities, the first partition 23 has two spaced-apart connecting holes 231, each connecting hole 231 communicating with the second cavity 222 in a corresponding external conductive cavity. The remaining external conductive cavities are separated from the internal conductive cavity 21 by the first partition 23, forming independent spaces. In the area of ​​the second layer of external conductive cavities, the first partition 23 has two spaced-apart connecting holes 231, each connecting hole 231 communicating with the second cavity 222 in a corresponding external conductive cavity. The second cavity 222 in one of the external conductive cavities is conductive, and the remaining external conductive cavities are separated from the internal conductive cavity 21 by the first partition 23 into independent spaces. The connecting hole 231 located in the area of ​​the second layer of external conductive cavities is staggered from the connecting hole 231 located in the area of ​​the first layer of external conductive cavities along the circumferential direction of the valve core 20 and is separated by the second partition 24. In the areas of the third layer of external conductive cavities and the fourth layer of external conductive cavities, the first partition 23 does not have a connecting hole 231. The external conductive cavity 22 and the internal conductive cavity 21 located in this area are separated into independent spaces by the first partition 23.

[0056] Combination Figure 4 , Figure 5 , Figure 11 , Figures 16 to 19 In some embodiments, the valve core 20 has a columnar structure, the length of the first cavity 221 is twice the length of the second cavity 222, and the width of the first cavity 221 is equal to the width of the second cavity 222. It should be noted that the length of the first cavity 221 refers to the length of the longer edge in the longitudinal section of the opening of the first cavity 221, for example... Figure 16 In the first cavity 221, the longitudinal section of the cavity opening is rectangular. The length and width of the first cavity 221 are the same as the rectangle. Similarly, the length of the second cavity 222 refers to the length of the longer edge of the longitudinal section of the cavity opening, and the width of the second cavity 222 refers to the length of the shorter edge of the longitudinal section of the cavity opening. Along the circumferential direction of the valve core 20, the valve core 20 includes a first sector segment SE1, a second sector segment SE2, a third sector segment SE3, and a fourth sector segment SE4, all with a sector-shaped cross-section. Figure 16 The first sector SE1 is provided with three first cavities 221 and two second cavities 222. The width direction of the first cavity 221 is parallel to the height direction of the valve core 20. The first partition 23 is provided with a connecting hole 231 at the position of forming one of the second cavities 222. The internal connecting cavity 21 is connected to one of the second cavities 222 through the connecting hole 231. Figure 17 Along the height direction of the valve core 20, the second sector segment SE2 is provided with two first cavities 221, the length direction of the first cavity 221 being parallel to the height direction of the valve core 20; as Figure 18 Along the height direction of the valve core 20, the third sector SE3 is provided with a first cavity 221 and two second cavities 222. The length direction of the first cavity 221 is parallel to the height direction of the valve core 20. The first partition 23 is provided with a connecting hole 231 at the position of forming one of the second cavities 222 on its peripheral wall. The internal conductive cavity 21 communicates with one of the second cavities 222 through the connecting hole 231. Figure 19 The fourth sector SE4 is provided with three first chambers 221 and two second chambers 222. The length direction of one of the three first chambers 221 is parallel to the height direction of the valve core 20, while the length directions of the other two first chambers 221 are perpendicular to the height direction of the valve core 20. A connecting hole 231 is provided at the position of the peripheral wall of one of the second chambers 222 formed by the first partition 23. The internal guiding cavity 21 is connected to the second chamber 222 through the connecting hole 231. With the above arrangement, when the valve core 20 is rotated to different angles, it can guide different valve ports through different guiding cavities to form multiple flow paths.

[0057] like Figure 20In some embodiments, the control valve 1 includes nine channels 30, and the valve ports formed by the nine channels 30 are respectively a first valve port VP1 located on the first flow channel 31 and a second valve port VP2, a third valve port VP3, a fourth valve port VP4, a fifth valve port VP5, a sixth valve port VP6, a seventh valve port VP7, an eighth valve port VP8 and a ninth valve port VP9 located on the second flow channel 32. The control valve 1 includes at least any one of the following four operating modes:

[0058] The first working mode, such as Figure 21 and Figure 22 As shown, the valve core 20 rotates to the position corresponding to the valve port in the area of ​​the first sector SE1. The first valve port VP1 connects to the fourth valve port VP4 through the valve cavity, the internal conductive cavity 21, the connecting hole 231, and the second cavity 222 to form flow path four. One of the three first cavities 221 connects the second valve port VP2 and the third valve port VP3 to form flow path three. Another first cavity 221 connects the sixth valve port VP6 and the seventh valve port VP7 to form flow path four. Yet another first cavity 221 connects the eighth valve port VP8 and the ninth valve port VP9 to form flow path one. The fifth valve port VP5 is in the closed state. In this paper, the connecting lines in the block diagram represent schematic connections between two valve ports.

[0059] The second working mode, such as Figure 23 and Figure 24 The valve core 20 rotates to the position corresponding to the valve port in the area where one of the adjacent second sector segments SE2 and the third sector segment SE3 are located. In the area where the second sector segment SE2 is located, one of the two first chambers 221 connects the seventh valve port VP7 and the ninth valve port VP9 to form flow path one, and the other first chamber 221 connects the third valve port VP3 and the fifth valve port VP5 to form flow path two. In the area where the third sector segment SE3 is located, the first chamber 221 connects the sixth valve port VP6 and the eighth valve port VP8 to form flow path three. The first valve port VP1 is connected to the fourth valve port VP4 through the internal conducting chamber 21, the connecting hole 231, and one of the second chambers 222 to form flow path four. The second valve port VP2 is in the closed state.

[0060] The third working mode, such as Figure 25 and Figure 26As shown, the valve core 20 rotates to the position corresponding to the valve port in the area of ​​another set of adjacent second sector segment SE2 and third sector segment SE3. In the area of ​​the second sector segment SE2, one of the two first chambers 221 connects the eighth valve port VP8 and the sixth valve port VP6 to form flow path three, and the other first chamber 221 connects the fourth valve port VP4 and the second valve port VP2 to form flow path four. In the area of ​​the third sector segment SE3, the first chamber 221 connects the ninth valve port VP9 and the seventh valve port VP7 to form flow path one. The first valve port VP1 is connected to the third valve port VP3 through the internal conductive cavity 21, the connecting hole 231 and one of the second chambers 222 to form flow path two. The fifth valve port VP5 is in the closed state.

[0061] The fourth working mode, such as Figure 27 and Figure 28 When the valve core 20 rotates to the position corresponding to the valve port in the area of ​​the fourth sector SE4, the first valve port VP1 is connected to the third valve port VP3 through the internal conducting cavity 21, the connecting hole 231, and a second cavity 222 to form flow path two. One of the three first cavities 221 connects the eighth valve port VP8 and the sixth valve port VP6 to form flow path three. Another first cavity 221 connects the ninth valve port VP9 and the seventh valve port VP7 to form flow path one. Yet another first cavity 221 connects the fourth valve port VP4 and the fifth valve port VP5 to form flow path four. The second valve port VP2 is in the closed state.

[0062] With the above settings, when the control valve 1 has 9 valve ports, it can form four fluid passages and one closed passage. Compared with the previous multi-passage valve structure, which cannot achieve single valve port shut-off, the control valve 1 of the present invention can achieve a single valve port shut-off working mode during the valve core rotation process.

[0063] like Figures 29 to 31 This is a schematic diagram of the structure of the control valve 1 provided in the second embodiment of the present invention. It is similar in structure to the control valve provided in the first embodiment, and both include a valve body 10, a valve core 20, a first seal 41, a second seal 42, and a drive device (not shown in the figure). The control valve 1 has multiple channels 30, each channel 30 having a first flow channel 31 and multiple second flow channels 32. One end of the first flow channel 31 penetrates the side wall portion 11 of the valve body to form a first communication port 311. The first communication port 311 is located at one end of the side wall portion 11 in the height direction. The difference is that the control valve 1 provided in the second embodiment has five valve ports, and the structure of the valve core 20 is different accordingly. The valve core 20 provided in the embodiment of the present invention will be described below.

[0064] like Figure 31In some embodiments, the valve core 20 has a columnar structure, the length of the first cavity 221 is twice the length of the second cavity 222, and the width of the first cavity 221 is equal to the width of the second cavity 222. Along the circumferential direction of the valve core 20, the valve core 20 includes a first sector segment SE1, a second sector segment SE2, and a third sector segment SE3 with a fan-shaped cross-section. The first sector segment SE1 is provided with one first cavity 221 and two second cavities 222. The width direction of the first cavity 221 is parallel to the height direction of the valve core 20. The first partition 23 forms the peripheral wall of one of the second cavities 222. A connecting hole 231 is provided at the position, and the internal conducting cavity 21 is connected to the second cavity 222 through the connecting hole 231; along the height direction of the valve core 20, the second sector segment SE2 is provided with a first cavity 221, and the length direction of the first cavity 221 is parallel to the height direction of the valve core 20; along the height direction of the valve core 20, the third sector segment SE3 is provided with two second cavities 222, and the first partition 23 is provided with a connecting hole 231 at the position of the peripheral wall forming one of the second cavities 222, and the internal conducting cavity 21 is connected to one of the second cavities 222 through the connecting hole 231.

[0065] like Figure 29 and Figure 30 In some embodiments, the control valve 1 includes five channels 30, and the valve ports formed by the five channels 30 are respectively a first valve port VP1 located on the first flow channel 31 and a second valve port VP2, a third valve port VP3, a fourth valve port VP4, and a fifth valve port VP5 located on the second flow channel 32. The control valve 1 includes at least any one of the following four operating modes: the first operating mode, such as... Figure 32 and Figure 33 The valve core 20 rotates to the position corresponding to the valve port in one of the first sector segments SE1. The first valve port VP1 connects to the fourth valve port VP4 through the internal conductive cavity 21, the connecting hole 231, and the second cavity 222 to form flow path two. The first cavity 221 connects the second valve port VP2 and the third valve port VP3 to form flow path one. The fifth valve port VP5 is in the closed state. The second working mode, such as... Figure 34 and Figure 35 The valve core 20 rotates to the position corresponding to the valve port in the area where one of the adjacent second sector segments SE2 and the third sector segment SE3 are located. In the area where the second sector segment SE2 is located, the first cavity 221 connects the third valve port VP3 and the fifth valve port VP5 to form flow path one. In the area where the third sector segment SE3 is located, the first valve port VP1 connects to the fourth valve port VP4 through the internal conductive cavity 21, the connecting hole 231 and one of the second cavities 222 to form flow path two. The second valve port VP2 is in the closed state. The third working mode is as follows: Figure 36 and Figure 37The valve core 20 rotates to the position corresponding to the valve port in the area of ​​another set of adjacent second sector segments SE2 and third sector segments SE3. In the area of ​​the second sector segment SE2, the first cavity 221 connects the second valve port VP2 and the fourth valve port VP4 to form flow path one. In the area of ​​the third sector segment SE3, the first valve port VP1 connects to the third valve port VP3 through the internal conductive cavity 21, the connecting hole 231, and one of the second cavities 222 to form flow path two. The fifth valve port VP5 is in the closed state. The fourth working mode is as follows: Figure 38 and Figure 39 The valve core 20 rotates to the position corresponding to the valve port in the area where the other first sector SE1 is located. The first valve port VP1 is connected to the third valve port VP3 through the internal conducting cavity 21, the connecting hole 231 and one of the second cavities 222 to form flow path two. The first cavity 221 connects the fourth valve port VP4 and the fifth valve port VP5 to form flow path one. The second valve port VP2 is in the closed state.

[0066] The number of valve ports of the control valve 1 provided in this embodiment of the invention is not limited to five or nine, but can be more, such as six, seven, eleven, twelve or thirteen, etc. The specific number can be set according to user needs. Based on the control valve 1 provided in this embodiment of the invention, in some embodiments, the control valve 1 has 2n+1 channels 30 and 2n+1 valve ports. The control valve 1 can form n flow paths that connect two valve ports through the internal conducting cavity 21 and the external conducting cavity 22 of the valve core 20, and can keep one valve port in a closed state through the internal conducting cavity 21 and the first partition 23 of the valve core 20. Compared with the previous multi-channel valve structure that cannot achieve single valve port closure, the control valve 1 of this embodiment of the invention can achieve a single valve port closure working mode during the rotation of the valve core.

[0067] In summary, according to the control valve 1 provided in the embodiment of the present invention, the valve core 20 includes an internal conducting cavity 21, a plurality of external conducting cavities 22, a first partition 23, and a second partition 24. The first partition 23 is located between the internal conducting cavity 21 and the external conducting cavities 22, and can separate the internal conducting cavity 21 and the external conducting cavities 22. The first partition 23 has a connecting hole 231, so that the internal conducting cavity 21 communicates with a portion of the external conducting cavities 22. The second partition 24 is located between two adjacent external conducting cavities 22 to connect each external conducting cavity 22. The conduction cavity 22 is divided into independent spaces. In this invention, by rotating the valve core 20, the corresponding two valve ports can be opened or closed through an external conduction cavity 22, and / or, the rotating valve core 20 can be opened or closed through an internal conduction cavity 21, a connecting hole 231, and an external conduction cavity 22. In this way, the control valve 1 can enable multiple valve ports to have different communication methods. Multiple flow paths can be controlled by one control valve 1. It is simple and convenient to install for fluid systems and is easy to promote and apply.

[0068] 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. For example, the directional definitions such as "front", "back", "left", "right", "up", and "down" are used. 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 modify, combine or make 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 core, the valve body including a side wall portion, the control valve having a valve cavity, the side wall portion being the peripheral wall of the valve cavity or at least a portion of the peripheral wall, the valve core being rotatable under a drive, characterized in that, The control valve includes at least five channels, one end of each channel penetrates the side wall portion, and the other end of each channel forms the valve port of the control valve. The valve core includes an internal conducting cavity, multiple external conducting cavities, a first partition and a second partition. The multiple external conducting cavities are distributed on the outer periphery of the internal conducting cavity. The first partition is located between the internal conducting cavity and the external conducting cavities, and the second partition is located between two adjacent external conducting cavities and isolates the external conducting cavities. The first partition has a connecting hole, and the internal conductive cavity is connected to a portion of the external conductive cavities through the connecting hole; The control valve includes a first flow channel and multiple second flow channels. The first flow channel is connected to the external flow channel through the internal conductive cavity and the connecting hole. The second flow channels are connected to the external flow channel. Rotating the valve core can open two corresponding valve ports through the first flow channel, the internal conductive cavity, the connecting hole, and the external flow channel. Rotating the valve core can open two corresponding valve ports through the second flow channel and one external flow channel. The control valve channel also includes multiple second flow channels. One end of each second flow channel penetrates the side wall to form a second communication port, and the other end of the second flow channel forms a second valve interface. Along the height direction of the side wall, the location of the second communication port corresponds to the location of the external conductive cavity. The external conductive cavity includes multiple first cavities and multiple second cavities. Rotating the valve core can connect the two second valve interfaces corresponding to the first cavities through the first cavities and the second communication ports. A portion of the second cavities are connected to the internal conductive cavity through the connecting hole. One end of the first flow channel penetrates the side wall to form a first connecting port, and the other end of the first flow channel forms a first valve interface. Rotating the valve core can connect the first valve interface and a second valve interface corresponding to the second cavity through the internal conductive cavity, the connecting hole, and the second cavity.

2. The control valve according to claim 1, characterized in that, The control valve has 2n+1 channels and 2n+1 valve ports. The control valve can form n flow paths that connect two valve ports through the internal and external conduction cavities of the valve core, and can also keep one of the valve ports in a closed state through the internal conduction cavity of the valve core and the first partition.

3. The control valve according to claim 1, characterized in that, The valve core includes a transmission connection part, a conduction part, and a support part. Along the height direction of the valve core, the conduction part is located between the transmission connection part and the support part. Both the transmission connection part and the support part are limitedly connected to the valve body. The internal conduction cavity and the external conduction cavity are both formed in the conduction part. The first communication port is located at one end of the side wall portion along its height direction, and the conductive portion of the valve core and the first communication port are arranged along the height direction of the side wall portion. In any operating mode of the valve core, the first valve interface is connected to the internal conductive cavity through the first communication port, the valve cavity, and the internal conductive cavity.

4. The control valve according to claim 3, characterized in that, Along the height direction of the valve core, the longitudinal cross-sectional area of ​​the opening of the first cavity is greater than or equal to twice the longitudinal cross-sectional area of ​​the opening of the second cavity.

5. The control valve according to claim 1, characterized in that, The valve core has a columnar structure. The length of the first cavity is twice the length of the second cavity, and the width of the first cavity is equal to the width of the second cavity. Along the circumferential direction of the valve core, the valve core includes a first sector segment, a second sector segment, a third sector segment, and a fourth sector segment with a sector-shaped cross-section. The first sector segment is provided with three first cavities and two second cavities. The width direction of the first cavity is parallel to the height direction of the valve core. The first partition is provided with a connecting hole at the position of forming one of the second cavities on the peripheral wall. The internal conductive cavity communicates with one of the second cavities through the connecting hole. The second sector segment is provided with two of the first cavities, and the length direction of the first cavity is parallel to the height direction of the valve core; The third sector segment is provided with one first cavity and two second cavities. The length direction of the first cavity is parallel to the height direction of the valve core. The first partition is provided with the connecting hole at the position of forming one of the second cavities on the peripheral wall. The internal conductive cavity is connected to one of the second cavities through the connecting hole. The fourth sector segment is provided with three first cavities and two second cavities. The length direction of one of the three first cavities is parallel to the height direction of the valve core, and the length direction of the other two first cavities is perpendicular to the height direction of the valve core. The first partition is provided with the connecting hole at the position of forming one of the second cavities. The internal conductive cavity is connected to one of the second cavities through the connecting hole.

6. The control valve according to claim 5, characterized in that, The control valve includes nine channels, and the valve ports formed by the nine channels are respectively a first valve port located on the first flow channel and a second, third, fourth, fifth, sixth, seventh, eighth, and ninth valve port located on the second flow channel. The control valve includes at least one of the following four operating modes: In the first working mode, the valve core rotates to the position corresponding to the valve port in the area where the first sector segment is located. The first valve port is connected to the fourth valve port through the internal conductive cavity, the connecting hole and the second cavity. One of the three first cavities connects the second valve port and the third valve port, another first cavity connects the sixth valve port and the seventh valve port, and the third first cavity connects the eighth valve port and the ninth valve port. In the second operating mode, the valve core rotates to a position corresponding to the valve port in the area where one of the adjacent second sector segments and the third sector segment are located. In the area where the second sector segment is located, one of the two first cavities connects the seventh valve port and the ninth valve port, and the other first cavity connects the third valve port and the fifth valve port. In the area where the third sector segment is located, the first cavity connects the sixth valve port and the eighth valve port. The first valve port is connected to the fourth valve port through the internal conductive cavity, the connecting hole, and one of the second cavities. In the third operating mode, the valve core rotates to a position corresponding to the valve port in the area where another set of adjacent second and third sector segments are located. In the area where the second sector segment is located, one of the two first cavities connects the eighth valve port and the sixth valve port, and the other first cavity connects the fourth valve port and the second valve port. In the area where the third sector segment is located, the first cavity connects the ninth valve port and the seventh valve port. The first valve port is connected to the third valve port through the internal conductive cavity, the connecting hole, and one of the second cavities. In the fourth working mode, the valve core rotates to the position corresponding to the valve port in the area where the fourth sector segment is located. The first valve port is connected to the third valve port through the internal conductive cavity, the connecting hole, and a second cavity. One of the three first cavities connects the eighth valve port and the sixth valve port, another first cavity connects the ninth valve port and the seventh valve port, and yet another first cavity connects the fourth valve port and the fifth valve port.

7. The control valve according to claim 4, characterized in that, The valve core has a columnar structure. The length of the first cavity is twice the length of the second cavity, and the width of the first cavity is equal to the width of the second cavity. Along the circumferential direction of the valve core, the valve core includes a first sector segment, a second sector segment, and a third sector segment with a sector-shaped cross-section. The first sector segment is provided with one first cavity and two second cavities. The width direction of the first cavity is parallel to the height direction of the valve core. The first partition is provided with the connecting hole at the position of forming one of the second cavities on the peripheral wall. The internal conductive cavity is connected to one of the second cavities through the connecting hole. The second sector segment is provided with one of the first cavities, and the length direction of the first cavity is parallel to the height direction of the valve core; The third sector segment is provided with two second cavities. The first partition is provided with a connecting hole at the position of the peripheral wall forming one of the second cavities. The internal conductive cavity is connected to one of the second cavities through the connecting hole.

8. The control valve according to claim 7, characterized in that, The control valve includes five channels, and the valve ports formed by the five channels are respectively a first valve port located on the first flow channel and a second, third, fourth, and fifth valve port located on the second flow channel. The control valve includes at least one of the following four operating modes: In the first working mode, the valve core rotates to a position corresponding to the valve port in one of the areas where the first sector segment is located. The first valve port is connected to the fourth valve port through the internal conductive cavity, the connecting hole and the second cavity. The first cavity connects the second valve port and the third valve port. In the second working mode, the valve core rotates to a position corresponding to the valve port in the area where one of the adjacent second sector segments and the third sector segment are located. In the area where the second sector segment is located, the first cavity connects the third valve port and the fifth valve port. In the area where the third sector segment is located, the first valve port connects to the fourth valve port through the internal conductive cavity, the connecting hole and one of the second cavities. In the third working mode, the valve core rotates to a position corresponding to the valve port in the area where the second and third sector segments are located. In the area where the second sector segment is located, the first cavity connects the second valve port and the fourth valve port. In the area where the third sector segment is located, the first valve port connects to the third valve port through the internal conductive cavity, the connecting hole and one of the second cavities. In the fourth operating mode, the valve core rotates to a position corresponding to the valve port in another area where the first sector segment is located. The first valve port is connected to the third valve port through the internal conductive cavity, the connecting hole, and one of the second cavities. The first cavity connects the fourth valve port and the fifth valve port.

9. The control valve according to any one of claims 1 to 8, characterized in that, The valve core further includes a connecting post and a connecting rib. The outer surface of the connecting post and the inner surface of the first partition plate form the internal conductive cavity. The connecting rib is connected between the outer surface of the connecting post and the inner surface of the first partition plate.

10. The control valve according to any one of claims 1 to 8, characterized in that, The valve body includes a bottom wall and a top wall, which together form the valve cavity. At least a portion of the side wall is located between the top wall and the bottom wall. One of the bottom wall and the top wall is integrally formed with the side wall, and the other is sealed to the side wall.

11. The control valve according to any one of claims 1 to 8, characterized in that, The first partition and the second partition are fixedly connected as a single structure by injection molding. The control valve further includes a first seal and a second seal. The first seal is located between the valve core and the side wall portion. One side surface of the first seal in the thickness direction contacts and seals the surface of the second partition. The other side surface of the first seal in the thickness direction contacts and seals the inner surface of the side wall portion. The second seal is located between the valve core and the side wall portion. The second seal and the first seal are respectively disposed on both sides of the valve core in the radial direction.

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