Control valve

Abstract

The control valve of the present invention includes a valve body and a valve element having a storage chamber, the valve body including a side wall portion which forms a peripheral wall of at least a part of the storage chamber and has at least four communication ports, at least a part of the valve element is located in the storage chamber and is rotatable, the valve element including a first conductive chamber which has at least a first position and a second position, and in the first position of the valve element the first conductive chamber connects at least two communication ports, and in at least one of the first and second positions of the valve element at least a part of the wall portion forming the first conductive chamber closes at least one communication port, thereby realizing communication between a plurality of flow paths and is also able to separate at least one communication port.

Description

[Technical field]

[0001] This application claims priority to two Chinese patent applications filed with the China Patent Office on March 8, 2022, bearing application number 202210219030.6 and entitled "Control Valve", and filed with the China Patent Office on March 8, 2022, bearing application number 202210219282.9 and entitled "Control Valve", the entire contents of which are incorporated herein by reference.

[0002] The present invention relates to the field of fluid control, and more particularly to control valves. [Background technology]

[0003] A control valve is used in a thermal management system to control a plurality of flow paths. The control valve generally includes a valve body and a plurality of connection ports, and communication between the connection ports is achieved by rotating the valve body.

[0004] With the development of control valves, requirements for the functions of the control valves are increasing. For example, there is a demand for a control valve that can realize fluid communication while allowing some of its connection ports to be disconnected from other connection ports within the range of the control valve, and has a simple structure. Summary of the Invention [Problem to be solved by the invention]

[0005] An object of the present invention is to provide a control valve which has a simple structure, is capable of achieving communication between at least two flow paths, and is also capable of closing at least one communication port. [Means for solving the problem]

[0006] The present invention provides a control valve, the control valve comprising a storage chamber, the control valve comprising a valve body and a valve element, the valve body comprising a side wall portion, the side wall portion forming a peripheral wall of at least a part of the storage chamber, the side wall portion comprising at least four communication ports, at least a part of the valve element being located in the storage chamber and rotatable, the valve element comprising a first communicating chamber, The valve body has at least a first position and a second position, and in the first position of the valve body, the first communicating chamber communicates at least two of the communication ports, and in at least one of the first and second positions of the valve body, at least a portion of a wall portion forming the first communicating chamber closes at least one of the communication ports. Effect of the Invention

[0007] According to the control valve of the present invention, the valve body is rotatable within the accommodation chamber and is provided with a first conductive chamber. In a first position of the valve body, the first conductive chamber connects at least two communication ports. In at least one of the first and second positions of the valve body, at least a portion of the wall portion of the first conductive chamber is arranged to close at least one communication port. This realizes a function that when the valve body is in one position or in two or more different positions, fluids between one communication port and other communication ports are not connected within the range of the control valve. Furthermore, the function of closing the communication port is realized by at least a portion of the wall portion of the first conductive chamber. In contrast to closing the communication ports by arranging individual separators on the valve body, the control valve of the present invention closes the communication ports by multiplexing at least a portion of the wall portion of the first conductive chamber, thereby simplifying the structure of the control valve. [Brief description of the drawings]

[0008] [Figure 1] FIG. 2 is an exploded view of a control valve according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a three-dimensional view of the control valve of FIG. 1. [Diagram 3] 3 is a cross-sectional view of the control valve of FIG. 2 in one position. [Figure 4] FIG. 2 is a structural diagram of a combination of a valve body and a sealing member in one embodiment of the present invention. [Diagram 5]3 is a cross-sectional view of the control valve of FIG. 2 in another position, illustrating corresponding conduction illustrations when the control valve is in a first mode of operation. [Figure 6] 3 is a corresponding conduction schematic diagram when the control valve of FIG. 2 is in a second operation mode; [Figure 7] 3 is a corresponding conduction schematic diagram when the control valve of FIG. 2 is in a third operation mode; [Figure 8] 3 is a corresponding conduction schematic diagram when the control valve of FIG. 2 is in a fourth operation mode. [Figure 9] FIG. 2 is a structural diagram of a valve body according to an embodiment of the present invention. [Figure 10] FIG. 2 is a structural diagram of a control valve provided by another embodiment of the present invention. [Figure 11] 11 is a cross-sectional view of the control valve of FIG. 10 in one position. [Figure 12] FIG. 11 is a structural diagram of a valve body provided by another embodiment of the present invention; [Figure 13] FIG. 13 is a cross-sectional view of the valve body of FIG. [Figure 14] 11 is a cross-sectional view of the valve body and sealing member of FIG. 10. [Figure 15] 11 is a corresponding conduction schematic diagram when the control valve of FIG. 10 is in a first operation mode. [Figure 16] 10 is a corresponding conduction example when the control valve of FIG. 10 is in a second mode of operation. [Figure 17] 10 is a corresponding conduction example when the control valve of FIG. 10 is in a third operating mode. [Figure 18] 10 is a corresponding conduction example when the control valve of FIG. 10 is in a fourth mode of operation. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The present invention will now be described in detail with reference to the drawings and examples. In this specification, relational terms such as "first," "second," etc. are merely intended to distinguish between elements having the same name and do not require or imply that any actual relation or order exists between those elements.

[0010] The embodiment of the present invention provides a control valve, which is applicable to a vehicle thermal management system, particularly to a coolant circulation system, and can perform the functions of flow isolation, conduction and switching of the thermal management system.

[0011] As shown in Figures 1 to 4, a control valve 30 according to an embodiment of the present invention includes a valve body 31, a valve element 32, and a sealing member 33. The valve body 31 has a storage chamber and communication ports 301, of which there are at least four. The valve body 31 includes a side wall portion 311, an upper wall portion 312 and a bottom cover portion 313, at least a portion of the side wall portion 311 is located between the bottom cover portion 313 and the upper wall portion 312 along the axial direction of the side wall portion 311, the side wall portion 311, the upper wall portion 312 and the bottom cover portion 313 define at least a portion of the storage chamber, the communication port 301 is located on the inner surface of the side wall portion 311, the inner surface of the side wall portion 311 faces the storage chamber, the upper wall portion 312 and the bottom cover portion 313 are both sealed and connected to the side wall portion 311, at least a portion of the valve body 32 is located in the storage chamber, and the valve body 32 can be rotated by being driven. At least a portion of the sealing member 33 is located between the side wall portion 311 and the valve body 32 along the radial direction of the side wall portion 311 to seal the control valve 30, and the sealing member 33 has a hole passage that faces the position of the communication port 301 and communicates with the corresponding communication port 301. The control valve 30 further includes a drive unit 34, which includes a drive member including a motor or a combination of a motor and a group of transmission gears. The drive member is power-transmittingly connected to the valve body 32 to drive the valve body 32 to rotate, and the rotation of the valve body 32 realizes the conductive function of the different communication ports 301.

[0012] And the control valve 30 further includes a connecting pipe 314, which has a flow passage, one end of which is connected to the corresponding communication port 301, and the other end forms a port of the control valve 30, which may be integrated in the same plane or arranged according to the usage needs, or the connecting pipe 314 may be connected to other fluid units in the thermal management system, which may be structures such as a heat exchanger, a water pump, etc.

[0013] As shown in Figures 4 to 9, in an embodiment of the present invention, at least a portion of the communication ports 301 are provided along the circumferential direction of the side wall portion 311, and when specifically implemented, all of the communication ports 301 are provided along the circumferential direction of the side wall portion 311. Along the circumferential direction of the valve body 32, the valve body 32 has M connecting chambers, and in any operation mode of the control valve 30, the control valve 30 has N flow paths, and the flow path is a fluid flow path formed by at least two communication ports 301 passing through the same connecting chamber of the valve body 32. For example, in FIG. 5, the second connection port P2 and the fourth connection port P4 form one fluid flow path so as to communicate through one connecting chamber of the valve body 32, and M≧2. In at least one operation mode of the control valve 30, M>N, where M and N are both positive integers, and the sum of the communication ports 301 included in the N flow paths is smaller than the sum of the communication ports 301 on the side wall portion 311.

[0014] In at least one operating mode of the control valve 30, N=1, and two or three of the communication ports 301 form a single flow path, for example, if one flow path includes three communication ports 301, the three communication ports 301 are smaller than the number of four communication ports 301 on the side wall portion 311, separating one communication port 301; in at least one other operating mode of the control valve 30, N=2, and four of the communication ports 301 are connected in pairs. In a specific implementation, when the control valve 30 is in different operating modes, the number of flow paths N formed may be different. For example, when the control valve 30 is in the operating mode of Figures 5 to 7, N = 1, and in this case, the control valve 30 has one flow path; when the control valve 30 is in the operating mode of Figure 8, N = 2, and in this case, the control valve 30 has two flow paths.

[0015] The body of the valve body 32 is a columnar structure, and the valve body 32 is an integral injection molded structure. The valve body 32 includes a first conductive chamber 321 and a first partition plate 325, and this first partition plate 325 forms a part of the wall of the first conductive chamber 321. As shown in Figures 4 and 5, when the valve body 32 is in a first position, the first conductive chamber 321 connects at least two communication ports 301, and as shown in Figures 4 to 7, when the valve body 32 is in at least one of the first and second positions, the first partition plate 325 separates at least one communication port 301. In this specification, separation means that the communication port in question is not connected to any other communication port within the range of the control valve 30, and the communication port 301 in question is in a "closed" state. With the above arrangement, the first partition plate 325 separates at least one communication port 301, and further, fluid between that communication port 301 and any other communication port 301 is not conducted within the range of the control valve 30, thereby realizing the "closing" function of that communication port 301 by the first partition plate 325. In this specification, closing a communication port means that the communication port is not communicated with any of the other communication ports within the range of the control valve 30.

[0016] 1 and 4 to 9, the valve body 32 includes two first partition plates 325, and the two first partition plates 325 form two side walls of the first communicating chamber 321. The first communicating chamber 321 has two first openings 3211 on the outer circumferential side of the valve body 32. In a first position of the valve body 32, one of the first openings 3211 corresponds to and communicates with at least one of the communicating ports 301, and the other first opening 3211 corresponds to and communicates with at least another of the communicating ports 301. As shown in FIGS. 7, in the second position of the valve body 32, one of the first openings 3211 of the first communicating chamber 321 corresponds to and communicates with one of the communicating ports 301, and the other first opening 3211 is positioned offset from the communicating port 301. In this case, the first partition plate 325 separates the communicating port corresponding to the first communicating chamber 321, and the communicating port does not communicate with any of the other communicating ports within the range of the control valve 30. The sealing function of the sealing member is combined to realize the “closing” function of the communicating port. With the above arrangement, the flow path can be established by one first communicating chamber 321, and the isolating function of at least one communication port 301 can be realized, so that the structure of the control valve 30 of this embodiment is simplified.

[0017] 4 to 9, the valve body 32 further includes a second communicating chamber 322, one of the first partition plates 325 is located between the first communicating chamber 321 and the second communicating chamber 322, a first opening 3211 on the outer circumferential side of the valve body 32 of the first communicating chamber 321 is smaller than a second opening 3221 on the outer circumferential side of the valve body 32 of the second communicating chamber 322, and the area of ​​the second opening 3221 is three times or more the area of ​​one communicating port 301, whereby the second communicating chamber 322 communicates with at least three communicating ports 301. The area of ​​the first opening 3211 is at least once the area of ​​one of the communication ports 301 and is less than twice the area of ​​one of the communication ports 301; in other words, the two communication ports 301 cannot be in a fully connected state at the same time, and the communication ports 301 being in a fully connected state means that the opening of the conductive chamber of the valve body 32 can be positioned to match the communication ports of all areas.

[0018] The communication port 301 includes a first connection port P1, a second connection port P2, a third connection port P3 and a fourth connection port P4 arranged along the circumferential direction of the side wall portion 311, and these first connection port P1, second connection port P2, third connection port P3 and fourth connection port P4 are arranged in sequence along the circumferential direction of the side wall portion 311. The valve body 32 has one first position and two second positions, and the two second positions are defined as a second sub-position and a third sub-position, respectively. The position of the first conductive chamber 321 in the accommodating chamber differs between the first position, the second sub-position and the third sub-position. By rotating the valve body 32, the valve body 32 can be switched between the above positions. The conductive states of the communication ports when the valve body 32 is in different positions will be described below.

[0019] As shown in FIG. 5, when the valve body 32 is in the first position, the control valve 30 is in the first operating mode, and the control valve 30 has a flow path FP0 which is the first flow path FP1. Specifically, the first conductive chamber 321 connects the second connection port P2 and the fourth connection port P4, that is, the first flow path FP1 includes the second connection port P2, the first conductive chamber 321 of the valve body 32 and the fourth connection port P4, and the first partition plate 325 separates the first connection port P1 and the third connection port P3, and at this time, the first connection port P1 and the third connection port P3 are both in the "closed" state.

[0020] As shown in FIG. 6, when the valve body 32 is in the second sub-position, the control valve 30 is in the second operating mode, and the control valve 30 has a flow path FP0 which is a second flow path FP2, specifically, the second conductive chamber 322 of the valve body 32 connects the first connection port P1, the second connection port P2 and the fourth connection port P4, that is, the second flow path FP2 includes the first connection port P1, the second conductive chamber 321 of the valve body 32, the second connection port P2 and the fourth connection port P4, and the first partition plate 325 separates the third connection port P3, and at this time, the third connection port P3 is in a "closed" state.

[0021] As shown in FIG. 7, in the third sub-position, the control valve 30 is in the third operating mode, and the control valve 30 has a flow path FP0 which is a third flow path FP3, specifically, the second connecting chamber 322 of the valve body 32 connects the first connection port P1, the third connection port P3 and the fourth connection port P4, that is, the second flow path FP2 includes the first connection port P1, the second connecting chamber 322 of the valve body 32, the third connection port P3 and the fourth connection port P4, and the first partition plate 325 separates the second connection port P2, and at this time, the second connection port P2 is in a "closed" state.

[0022] The valve body 32 further includes a third conduit chamber 323, one of the first partition plates 325 is located between the first conduit chamber 321 and the second conduit chamber 322, and the other first partition plate 325 is located between the first conduit chamber 321 and the third conduit chamber 323, and the first conduit chamber 321 is located between the second conduit chamber 322 and the third conduit chamber 323 along the radial direction of the valve body 32, in which case the valve body 32 further has a fourth position, and when the valve body 32 is in the fourth position, the control valve 30 is in a fourth operating mode, and the third conduit chamber 323 communicates between the third connection port P3 and the fourth connection port P4. The area of ​​the third opening of the third communicating chamber 323 on the outer periphery side of the valve body 32 is more than twice the area of ​​one communicating port and less than three times the area of ​​one communicating port 301. In other words, two communicating ports 301 can be brought into electrical communication at the same time, but three communicating ports 301 cannot be brought into complete communication at the same time.

[0023] Based on this, as shown in FIG. 8, the valve body 32 further has a fourth position, the control valve 30 is in a fourth operating mode, the control valve 30 has two flow paths FP0, namely, a fourth flow path FP4 and a fifth flow path FP5, the second conduit chamber 322 of the valve body 32 connects the first connection port P1 and the second connection port P2, the third conduit chamber 323 of the valve body 32 connects the third connection port P3 and the fourth connection port P4, in which the fourth flow path FP4 includes the first connection port P1, the second conduit chamber 322 of the valve body 32 and the second connection port P2, and the fifth flow path FP5 includes the third connection port P3, the third conduit chamber 323 of the valve body 32 and the fourth connection port P4.

[0024] The above-mentioned structure and operating mode arrangement of the control valve 30 can realize different conduction paths of the control valve 30 and different separations of the connection ports, so that when the control valve 30 is applied to a thermal management system, it can meet the needs of different operating modes of the thermal management system.

[0025] In the embodiment shown in Figures 4 to 9, the valve body 32 has three communicating chambers along the circumferential direction of the valve body 32, i.e., M = 3, and in any one of the four operating modes above, N < 2.

[0026] Furthermore, as shown in FIG. 4, the third connection port P3 and the fourth connection port P4 are disposed adjacent to each other, and the first connection port P1 and the second connection port P2 are disposed adjacent to each other. The angle a1 between the center line of the first connection port P1 and the center line of the fourth connection port P4 is 90° or more, the angle between the center lines of two adjacent communication ports 301 is 45° or less, the angle between the center line of the third connection port P3 and the center line of the fourth connection port P4 is 45° or less, and correspondingly, the angle between the center line of the first connection port P1 and the center line of the second connection port P2 is 45° or less.

[0027] As shown in Figures 10 to 13, these are structural diagrams of a control valve which is another embodiment of the present invention. The control valve provided by the embodiment of the present invention has the same operation mode as the control valve of Figures 1 to 9 and a similar structure, that is, in the embodiment of the present invention, N≦2. The valve body 32 of the control valve 30 in Figures 10 to 13 includes a first conducting chamber 321 and a second conducting chamber 322. In this case, the control valve 30 has two communicating chambers, M=2, the first communicating chamber 321 is closer to the central axis of the valve body 32 than the second communicating chamber 322 along the radial direction of the valve body 32, the first communicating chamber 321 has two first openings 3211 on the circumferential surface of the valve body 32, and the second communicating chamber 322 has one second opening 3221 on the outer circumferential side of the valve body 32, and the area of ​​the second opening 3221 is three times or more larger than the area of ​​one communication port, that is, at least three communication ports 301 can be simultaneously communicated. 1 to 9. The structure of the control valve 30 according to the embodiment of the present invention will be described below with reference to FIGS. 10 to 13.

[0028] One of the first partition plates 325 of the first conductive chamber 321 forms a first isolated chamber 3241, and as shown in Figures 13 to 15, both side edges extending along the axial direction of the first partition plate 325 abut against the sealing member 33, so that the first partition plate 325 and the sealing member 33 are surrounded to form a isolated space and close one communication opening 301, and the first partition plate 325 in Figure 13 is approximately an L-shaped plate. Along the radial direction of the valve body 32, the first communicating chamber 321 is located between the first isolated chamber 3241 and the second communicating chamber 322, and the area of ​​the opening of the first isolated chamber 3241 on the outer circumferential side of the valve body is at least once the area of ​​one of the communicating ports and is not more than twice the area of ​​one of the communicating ports. The other first partition plate 325 of the first conduction chamber 321 includes a first sub-portion 3251, a second sub-portion 3252 and a third sub-portion 3253, and the extension direction of the first sub-portion 3251 intersects with the extension direction of the second sub-portion 3252, and both the first sub-portion 3251 and the second sub-portion 3252 intersect with the third sub-portion 3253, so that the cross section of the first partition plate 325 along the axial direction perpendicular to the valve body 32 has a “Y” shape.

[0029] In order to achieve the function of isolating the connection ports in all of the multiple operating modes of the control valve 30, the first sub-portion 3251 of the first partition plate 325 forms a part of the wall of the first connecting chamber 321, the first sub-portion 3251 and the third sub-portion 3253 form one side wall of the first connecting chamber 321, and a second isolated chamber 3242 is formed between the second sub-portion 3252 and the first sub-portion 3251, i.e., the second sub-portion 3252, the first sub-portion 3251 and the sealing member 33 form an enclosed isolated space, and the opening area of ​​the second isolated chamber 3242 on the outer periphery of the valve body 32 is equal to or greater than the area of ​​one communication port 301 and is not more than twice the area of ​​one communication port, i.e., the two communication ports 301 cannot be fully connected at the same time.

[0030] At the first position and at least one of the second positions, one of the first isolated chamber 3241 and the second isolated chamber 3242 is disposed opposite one of the communication ports 301 and isolates the communication port 301 . With the above arrangement, the first partition plate 325 corresponding to the isolated chamber can isolate the communication port 301 of the control valve 30 .

[0031] As shown in FIG. 14, the fourth connection port P4, the first connection port P1 and the second connection port P2 are arranged adjacent to each other, the included angle between the center line of the fourth connection port P4 and the center line of the first connection port P1 is 45° or less, the included angle between the center line of the first connection port P1 and the center line of the second connection port P2 is 45° or less, and the included angle between the center line of the third connection port P3 and the center line of the fourth connection port P4 is 90° or more.

[0032] As shown in FIG. 15, the valve body 32 is in a first position, and the control valve 30 is in a first operating mode, in which the first isolated chamber 3241 corresponds to and communicates with the first connection port P1, and isolates the first connection port P1 to "close" the first connection port P1, the first partition plate 325 isolates the third connection port P3, and the second connection port P2 and the fourth connection port P4 are interconnected via the first communicating chamber 321, and the first flow path FP1 of the control valve 30 includes the second connection port P2, the first communicating chamber 321, and the fourth connection port P4.

[0033] As shown in FIG. 16, the valve body 32 is located in the second sub-position, and the control valve 30 is in the second operating mode, in which the first isolated chamber 3241 corresponds to and communicates with the third connection port P3, and by isolating the third connection port P3, the third connection port P3 is "closed", and the second connection port P2, the first connection port P1 and the fourth connection port P4 are communicated through the second communicating chamber 322, and in this case, the second flow path FP2 includes the second connection port P2, the second communicating chamber 322, the first connection port P1 and the fourth connection port P4.

[0034] As shown in FIG. 17, the valve body 32 is in the third sub-position, and the control valve 30 is in the third operating mode, in which the second isolated chamber 3242 corresponds to and communicates with the second connection port P2, and the second connection port P2 is isolated to "close" it, and the first connection port P1, the fourth connection port P4 and the third connection port P3 communicate with each other via the second communicating chamber 322, and the third flow path FP3 includes the first connection port P1, the second communicating chamber 322, the third connection port P3 and the fourth connection port P4.

[0035] As shown in FIG. 18, the valve body 32 is in the fourth position, and the control valve 30 is in the fourth operating mode, in which the fourth connection port P4 and the third connection port P3 are connected via the first connecting chamber 321, and the first connection port P1 and the second connection port P2 are connected via the second connecting chamber 322, and in which the fourth flow path FP4 includes the first connection port P1, the second connecting chamber 322, and the second connection port P2, and the fifth flow path FP5 includes the third connection port P3, the first connecting chamber 321, and the fourth connection port P4.

[0036] Then, the valve body 32 can reach the second sub-position when rotated 90° from the third sub-position, can reach the fourth position when rotated 45° from the second sub-position, and can reach the first position when rotated 90° from the fourth position. The user can arrange the valve body 32 and the communication port position and structure according to needs, and then rotate the valve body 32 by a corresponding angle to reach a corresponding position, thereby realizing the corresponding operation mode of the control valve 30. Here, based on the structure of this specification, by continuously rotating the valve body 32, further other operation modes can be realized, which are not mentioned in detail.

[0037] Along the height direction of the control valve 30, the height of the control valve 30 is 150 mm or less, along the width direction of the control valve 30, the width direction is perpendicular to the height direction and the width of the control valve 30 is 100 mm or less, and along the length direction of the control valve 30, the length direction is perpendicular to both the height direction and the width direction and the length of the control valve 30 is 150 mm or less. With the above-described arrangement, the size of the control valve 30 becomes reasonable, and miniaturization can be easily achieved. In this specification, the height direction of the control valve 30 is parallel to or overlaps with the axial direction of the valve body 32 .

[0038] As shown in FIG. 3 and FIG. 11, the control valve 30 further includes a detection unit to monitor the rotation position of the valve element 32 and whether the valve element 32 has stalled. The detection unit includes a test element 3261 and a detection element (not shown), and the test element 3261 can rotate synchronously with the valve body 32. Preferably, the valve body 32 includes a valve body shaft 326, and the test element 3261 is located at one end of the valve body shaft 326 and fixedly connected to the valve body shaft 326. The test element 3261 may be a magnetic element, and correspondingly, the detection element may be a Hall element. During the rotation of the valve body 32, the Hall element is always located within the magnetic field range of the magnetic element, so that the Hall element and the magnetic element cooperate with each other to detect the position of the valve body 32. By fixing and connecting the test element 3261 to the valve body 32, the position of the valve body 32 can be detected more accurately. As used herein, a fixed connection may be, but is not limited to, a connection made by welding, adhesive, threaded connection, fasteners, or by integral molding to form a one-piece structure or a heat crimping process.

[0039] As described above, according to the control valve 30 of the present invention, the valve element 32 is rotatable in the accommodation chamber, and the valve element 32 has the first communicating chamber 321, and also includes the first partition plate 325, the first end plate 327 and the second end plate 328. The first end plate 327 and the second end plate 328 are spaced apart from each other along the axial direction of the valve body 32, and at least a part of the first partition plate 325 is located between the first end plate 327 and the second end plate 328. When the valve body 32 is in the first position, the first conductive chamber 321 connects at least two communication ports 301, thereby enabling the valve body 32 to realize conductivity of the flow path. Furthermore, in at least one of the first and second positions of the valve body 32, the first partition plate 325 is positioned to separate at least one communication port 301, so that no fluid is connected between that communication port and any other communication port within the range of the control valve 30. Furthermore, the first partition plate 325 realizes a "closing" function of that communication port. The valve body 32 has M communicating chambers arranged along the circumferential direction of the valve body 32, and each communicating chamber is arranged so as to communicate at least two communication ports 301, so that in any operating mode, the control valve 30 forms N flow paths and realizes the circulation function of different flow paths. Furthermore, by arranging the control valve 30 so that M>N in at least one operating mode, and arranging the control valve 30 so that M=N, it is possible to realize the conduction of all the communication ports. In contrast, in this embodiment, by arranging the number of communicating chambers M to be greater than the number of flow paths N formed in at least one operating mode, some communication ports 301 cannot be conducted through the communicating chambers, and the fluid between the communication port 301 and the other communication ports 301 is not conducted within the range of the control valve 30, thereby realizing the "closing" function of the communication port. In contrast, the communication ports are closed by arranging individual separating parts on the valve body. In contrast, the control valve 30 of this embodiment closes the communication ports 301 by multiplexing at least some of the wall parts of the first communicating chamber 321, thereby simplifying the structure of the control valve 30 and making it easy to spread and apply.

[0040] Here, the above embodiments are not limiting of the present invention but are intended to explain the present invention. For example, reference may be made to the definitions of directions such as "front", "back", "left", "right", "upper", and "lower". Although the present invention has already been described in detail in this specification with reference to the above embodiments, amendments, combinations or equivalent replacements may be made to this application, and any improvements that do not deviate from the spirit and scope of the present invention fall within the scope of the claims of this application.

Claims

1. A control valve including a valve body and a valve element, the control valve including a chamber, The valve body includes a side wall portion that forms a peripheral wall of at least a portion of the accommodation chamber, and the side wall portion has at least four communication ports. At least a portion of the valve body is rotatably located in the accommodation chamber, and the valve body includes a first communicating chamber, a first communicating chamber that communicates with at least two of the communication ports when the valve body is in the first position, and at least a portion of a wall portion that forms the first communicating chamber when the valve body is in at least one of the first and second positions closes at least one of the communication ports.

2. The valve body includes two first partition plates, the two first partition plates form two side walls of the first introducing chamber, the first introducing chamber having two first openings on an outer circumferential side of the valve body, When the valve body is in a first position, one of the first openings communicates with at least one of the communication ports, and the other of the first openings communicates with at least another of the communication ports; 2. The control valve according to claim 1, wherein, in the second position of the valve body, one of the first openings communicates with one of the communication ports, and the other of the first openings is positioned offset from another of the communication ports.

3. at least a portion of the communication ports are provided along a circumferential direction of the side wall portion, the valve body has M communication chambers, each of the communication chambers allows at least two of the communication ports to communicate with each other, the control valve has N flow paths in at least a portion of operation modes of the control valve, the flow paths include a communication chamber and at least two communication ports communicating with the communication chambers, However, M≧2, M and N are both positive integers, and in at least one operating mode of the control valve, M>N, and a sum of the communication ports included in the N flow paths is smaller than a sum of the communication ports in the side wall portion.

4. In at least one operating mode of the control valve, N=1 and two or three of the ports form a single flow path; 4. The control valve of claim 3, wherein in at least one other operating mode of the control valve, N=2 and four of the communication ports communicate in pairs.

5. The valve body includes a first partition plate, the first partition plate forms a wall portion of a portion of the first conduit chamber, the valve body has one first position and two second positions, and the two second positions are defined as a second sub-position and a third sub-position, respectively, and the communication port includes a first connection port, a second connection port, a third connection port and a fourth connection port provided along a circumferential direction of the side wall portion, In the first position, the control valve is in a first operating mode, the first partition plate closes the first connection port and the third connection port, and the first communication chamber communicates between the second connection port and the fourth connection port, In the second sub-position, the control valve is in a second operating mode, and the first partition closes the third connection port. A control valve as claimed in any one of claims 1 to 4, characterized in that in the third sub-position, the control valve is in a third operating mode, and the first partition plate closes the second connection port.

6. The valve body further includes a second communication chamber, 6. The control valve according to claim 5, wherein one of the first partition plates is located between the first and second conduit chambers, a first opening of the first conduit chamber on an outer periphery of the valve body is smaller than a second opening of the second conduit chamber on an outer periphery of the valve body, and an area of ​​the second opening is three times or more the area of ​​one of the communication ports.

7. At the second sub-position, the second conductive chamber provides electrical communication between the second connection port, the first connection port, and the fourth connection port, 7. The control valve according to claim 6, wherein in the third sub-position, the control valve is in a third operating mode, and the second conductive chamber provides electrical communication between the first connection port, the fourth connection port, and the third connection port.

8. The valve body further includes a fourth position.

8. The control valve according to claim 7, wherein in the fourth position, the control valve is in a fourth operating mode, the second connecting chamber provides electrical communication between the second connection port and the first connection port, and the valve body provides electrical communication between the third connection port and the fourth connection port.

9. The valve body further includes a third conductive chamber, the first conduction chamber is located between the second conduction chamber and the third conduction chamber along a radial direction of the valve body, 9. The control valve according to claim 8, wherein the third connecting chamber in the fourth position connects the third connecting port and the fourth connecting port.

10. the third connection port and the fourth connection port are disposed adjacent to each other, and the first connection port and the second connection port are disposed adjacent to each other, 10. The control valve according to claim 9, wherein an included angle between a center line of the first connection port and a center line of the fourth connection port is 90° or more, and an included angle between center lines of two adjacent communication ports arranged adjacently is 45° or less.

11. The first partition plate on one side of the first conductive chamber forms a first isolated chamber, the first conducting chamber is located between the first isolated chamber and the second conducting chamber along a radial direction of the valve body, the other first partition plate of the first conducting chamber includes a first sub-portion and a second sub-portion, an extending direction of the first sub-portion intersects with an extending direction of the second sub-portion, the first sub-portion forms a wall portion of a part of the first conducting chamber, and the second sub-portion and the first sub-portion are spaced apart to form a second isolated chamber, the first conducting chamber is located between the first isolated chamber and the second isolated chamber along a circumferential direction of the valve body, 9. The control valve according to claim 8, wherein in the first position and at least one of the first and second positions, at least one of the first and second separated chambers is disposed opposite one of the communication ports and closes the communication port.

12. At the second sub-position, the first separate chamber is disposed opposite the third connection port and closes the third connection port. At the third sub-position, the second separated chamber is disposed opposite to the second connection port and separates the second connection port; 12. The control valve according to claim 11, wherein the first communication chamber in the fourth position communicates between the third connection port and the fourth connection port.

13. The fourth connection port, the first connection port, and the second connection port are disposed adjacent to each other, The angle between the center line of the third connection port and the center line of the fourth connection port is 90° or more; The control valve according to claim 11, wherein an included angle between center lines of two adjacent communication ports is 45° or less.

14. The height of the control valve along a height direction of the control valve is 150 mm or less, Along a width direction of the control valve, the width direction is perpendicular to the height direction, The width of the control valve is 100 mm or less, Along the length direction of the control valve, the length direction is perpendicular to both the height direction and the width direction, 12. The control valve according to claim 11, wherein the length of the control valve is 150 mm or less.

15. The body of the valve body has a columnar structure, the valve body has an integrated injection molding structure, and the valve body includes a valve body shaft; The control valve according to any one of claims 1 to 4, further comprising a test element and a detection element, the test element being located at one end of the valve body shaft and fixedly connected to the valve body shaft, and the detection element and the test element cooperating with each other to detect the position of the valve body.

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