control valve

Abstract

This invention discloses a control valve, including a valve body and a valve core. The valve core is rotatable under drive and has an external conducting cavity and a first cavity. The valve core includes a first partition, a first valve core shaft, and a first reinforcing rib. Along the height direction of the valve core, the first reinforcing rib includes a first end, a second end, and a first main body. The first main body is connected between the first end and the second end, and there is a height difference between the first end and the second end. The first main body includes a first sub-part and a second sub-part connected together. The first sub-part is connected to the first end, and the second sub-part is connected to the second end. The orthographic projections of the first sub-part and the second sub-part along the height direction are arranged circumferentially along the first valve core shaft and do not overlap. This can improve the structural strength of the valve core and improve the stability of the control valve operation.

Description

Technical Field

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

[0002] Typically, the valve core of a control valve rotates under the drive of a driving component to achieve fluid control of multiple flow paths. Therefore, the structural strength of the valve core has a significant impact on the stability of the control valve's operation. Summary of the Invention

[0003] The purpose of this invention is to provide a control valve that can improve the structural strength of the valve core and enhance the stability of the control valve's operation.

[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 forms the peripheral wall of the valve cavity or at least a part of the peripheral wall. The valve core is rotatable under a drive. The valve core has an external conducting cavity and a first cavity. The external conducting cavity extends from the side surface of the valve core into the interior of the valve core and is distributed on the outer periphery of the first cavity. The valve core includes a first partition, a first valve core shaft, and a first reinforcing rib. The first partition is located between the external conducting cavity and the first cavity. The first valve core shaft is located on the inner periphery of the first partition and has a gap with the first partition. The first cavity includes the space between the first valve core shaft and the first partition. The first reinforcing rib is located within the first cavity. The first reinforcing rib extends around the first valve core shaft and is connected to the outer surface of the first valve core shaft and the inner surface of the first partition, respectively. The first reinforcing rib includes a first end, a second end, and a first main body. The first main body is connected between the first end and the second end. The first end and the second end have a height difference along the height direction of the valve core. The first main body includes a first sub-part and a second sub-part that are fixedly connected. The first sub-part is connected to the first end, and the second sub-part is connected to the second end. Along the height direction of the valve core, the orthographic projections of the first sub-part and the second sub-part are arranged circumferentially along the first valve core shaft and do not overlap.

[0005] According to the control valve provided in the embodiment of the present invention, the control valve has an external conducting cavity and a first cavity. By setting the first cavity, the thickness of the control valve at various positions can be made similar, preventing deformation caused by uneven wall thickness during the manufacturing process. The control valve of the embodiment of the present invention also includes a first reinforcing rib located in the first cavity. The first reinforcing rib extends around the first valve core shaft and there is a height difference between the first end and the second end of the first reinforcing rib. At this time, the first reinforcing rib has a spiral structure, which can improve the torsional strength of the valve core and reduce the torsional deformation generated by the valve core during rotation, thereby improving the fluid leakage problem of the control valve caused by torsional deformation and improving the working stability of the control valve. Furthermore, by setting the orthographic projection of the first sub-part and the orthographic projection of the second sub-part of the first reinforcing rib to be arranged circumferentially along the first valve core shaft and without overlapping, the valve core is easy to demold during the manufacturing process. Attached Figure Description

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

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

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

[0009] Figure 4 This is a schematic diagram of the valve core provided in one embodiment of the present invention;

[0010] Figure 5 yes Figure 4 The diagram shows a partial cross-sectional view of the valve core.

[0011] Figure 6 yes Figure 4 The diagram shows a structural schematic of the combined structure of the first valve core shaft, connecting rib, and first reinforcing rib in the valve core from a first perspective.

[0012] Figure 7 This is a schematic diagram of the structure of the first reinforcing rib provided in one embodiment of the present invention;

[0013] Figure 8 yes Figure 4 The diagram shows the combined structure of the first valve core shaft, connecting rib, and first reinforcing rib in the valve core from a second perspective.

[0014] Figure 9 yes Figure 1 The diagram shows a cross-sectional view of the control valve at the third position.

[0015] Figure 10 This is a partial structural schematic diagram of a valve body provided in one embodiment of the present invention;

[0016] Figure 11 yes Figure 10 The diagram shows a cross-sectional view of the valve body.

[0017] Figure 12 This is a partial cross-sectional view of the combined structure of the first valve core shaft, connecting rib, and second reinforcing rib in a valve core according to another embodiment of the present invention.

[0018] Figure 13 This is a schematic diagram of the combined structure of the second reinforcing rib and the first connecting plate;

[0019] Figure 14 A front view of the valve core provided in another embodiment of the present invention;

[0020] Figure 15 yes Figure 14 The diagram shows a cross-sectional view of the valve core along the AA direction.

[0021] Figure 16 yes Figure 14 The diagram shows the structure of the valve core from another perspective;

[0022] Figure 17 This is a schematic diagram of the structure of the second valve spindle provided in one embodiment of the present invention;

[0023] Figure 18 This is a cross-sectional view of a combined structure of a second valve spindle, a second connecting plate, and a third reinforcing rib provided in one embodiment of the present invention.

[0024] Figure 19 yes Figure 18 The diagram shows a combined structure of the second connecting plate and the third reinforcing rib. Detailed Implementation

[0025] 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.

[0026] like Figures 1 to 3As shown, an embodiment of the present 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 combination of 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 1 In 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 wall 12 to the top wall 13. 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.

[0027] 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 and located on the side of the side wall portion 11 away from the valve cavity 101. For example, the mounting portion 14 and the side wall portion 11 can be integrally formed. The mounting portion 14 has a mounting plane, and the valve port 102 of the control valve 1 passes through the mounting plane, so that the valve ports 102 of the control valve 1 are all arranged on the mounting plane and the orientation of each valve port 102 is the same. 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. In some embodiments, the first sealing member 41 includes a through hole 411 that passes through itself. The through hole 411 corresponds to and communicates with at least a portion of the channel 30 of the control valve 1. The first sealing member 41 is deformed by the compression of the valve core 20 and the side wall portion 11, thereby achieving the sealing of the control valve 1 by the first sealing member 41.

[0028] like Figures 4 to 8The valve core 20 has an external conducting cavity 22 and a first cavity 21. The external conducting cavity 22 extends from the side surface of the valve core 20 into the interior of the valve core 20. The external conducting cavity 22 is distributed on the outer periphery of the first cavity 21. In this embodiment of the invention, the external conducting cavity 22 can conduct or cut off the corresponding valve port 102 so that the control valve 1 can control multiple fluids. By setting the first cavity 21, the thickness of the control valve 1 at each position can be made similar, preventing deformation caused by uneven wall thickness during the manufacturing process of the control valve 1. The valve core 20 includes a first partition 23, a first valve core shaft 251, and a first reinforcing rib 253. The first partition 23 is located between the external conductive cavity 22 and the first cavity 21. The first valve core shaft 251 is located on the inner circumferential side of the first partition 23 and has a gap with the first partition 23. The first cavity 21 includes the gap between the first valve core shaft 251 and the first partition 23. The first reinforcing rib 253 is located inside the first cavity 21 and extends around the first valve core shaft 251, connecting to the outer surface of the first valve core shaft 251 and the inner surface of the first partition 23, respectively. Figure 6 and Figure 7 As shown, the first reinforcing rib 253 includes a first end 2531, a second end 2532, and a first main body 2533. The first main body 2533 is connected between the first end 2531 and the second end 2532. The first end 2531 and the second end 2532 have a height difference along the height direction of the valve core 20. The first main body 2533 includes a first sub-part P1 and a second sub-part P2 that are fixedly connected. The first sub-part P1 is connected to the first end 2531, and the second sub-part P2 is connected to the second end 2532. Along the height direction of the valve core 20, the orthographic projection of the first sub-part P1 and the orthographic projection of the second sub-part P2 are arranged circumferentially along the first valve core axis 251 and do not overlap. By setting the first reinforcing rib 253, on the one hand, the structural strength change of the valve core 20 caused by the external conductive cavity 22 and the first cavity 21 in the control valve 1 can be reduced; on the other hand, by setting the first reinforcing rib 253 and the first reinforcing rib having a spiral structure, the torsional strength of the valve core 20 can be improved, and the torsional deformation generated by the valve core 20 during rotation can be reduced, thereby improving the fluid leakage problem of the control valve 1 caused by torsional deformation and improving the working stability of the control valve 1. By setting the orthographic projection of the first sub-part P1 and the orthographic projection of the second sub-part P2 of the first reinforcing rib 253 to be arranged circumferentially along the first valve core shaft 251 and not overlapping, it is easy to realize the integral injection molding of the first reinforcing rib 253, the first partition 23 and the first valve core shaft 251, and to facilitate the demolding of the valve core 20 during the manufacturing process. Optionally, the valve core 20 also includes a second partition 24, which is located between two adjacent external conductive cavities 22, and the second partition 24 divides each external conductive cavity 22 into an independent space.

[0029] Please refer to further information. Figures 2 to 6In some embodiments, the first reinforcing rib 253 spirally surrounds the first valve core shaft 251 for a full circle, that is, the end face of the first end 2531 and the end face of the second end 2532 coincide. At this time, along the height direction of the valve core 20, the first cavity 21 includes a first sub-cavity 211 and a second sub-cavity 212. The first sub-cavity 211 and the second sub-cavity 212 are respectively disposed on both sides of the first reinforcing rib 253 along the height direction of the valve core 20. The first sub-cavity 211 and the second sub-cavity 212 are separated into independent spaces by the first reinforcing rib 253. The first partition 23 is provided with a connecting hole 231 at the cavity wall forming the first sub-cavity 211. The first sub-cavity 211 is connected to a portion of the external conductive cavities 22 through the connecting hole 231. A portion of the valve ports 102 are connected to the first sub-cavity 211 through the valve cavity 101, so that the control valve 1 realizes the conduction and / or cut-off between the two valve ports through the valve cavity, the first sub-cavity, the connecting hole 231 and the external conductive cavity 22.

[0030] like Figure 1 and Figure 2 The passage 30 of the control valve 1 may further include multiple first flow channels 31. One end of each 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. Along the height direction of the side wall portion 11, the position of the first communication port 311 corresponds to the position of the external conductive cavity 22, facilitating fluid flow between the external conductive cavity 22 and the first communication port 311. The external conductive cavity 22 includes multiple first cavities 221 and multiple second cavities 222. Along the height direction of the valve core 20, the longitudinal cross-sectional area of ​​the cavity opening of the first cavity 221 is greater than or equal to the cavity opening of the second cavity 222. The first cavity 221 can correspond to two first valve interfaces 312, and the second cavity 222 corresponds to one first valve interface 312. The rotary valve core 20 can connect and / or disconnect the two second valve interfaces 322 corresponding to the first cavity 221 through the first cavity 221 and the first connecting port 311. A portion of the second cavities 222 are connected to the first sub-cavity 211 through the connecting hole 231. The rotary valve core 20 can connect and / or disconnect the first valve interface 312 and the valve port 102 corresponding to the second cavity 222 through the internal connecting cavity 21, the connecting hole 231 and the second cavity 222.

[0031] Further reading Figure 1 and Figure 3 The passage 30 of the control valve 1 may include a second flow channel 32. One end of the second flow channel 32 penetrates the side wall 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. The second communication port 321 is located at one end of the side wall portion 11 in the height direction, such as... Figure 3The second communication port 321 is located in the area between one end of the first seal 41 and the bottom wall 12. In any working mode of the valve core 20, the second valve interface 322 is connected to the first sub-cavity 211 through the second communication port 321 and the valve cavity 101. That is, at any rotation angle, the fluid flowing from the second valve interface 322 into the control valve directly enters the valve cavity 101 through the second communication port 321 and flows from the valve cavity 101 into the first sub-cavity 211, and flows between the first sub-cavity 211 and the external conductive cavity 22 through the communication hole 231.

[0032] To improve the strength of valve core 20, such as Figure 4 and Figure 5 As shown, in some embodiments, the valve core 20 further includes a plurality of connecting ribs 26. The plurality of connecting ribs 26 are arranged circumferentially along the first valve core shaft 251 within the first cavity 21. The connecting ribs 26 are respectively connected to the inner surface of the first partition 23 and the outer surface of the first valve core shaft 251. A first reinforcing rib 253 is inserted into and connected to the connecting ribs 26. Optionally, the first partition 23, the first valve core shaft 251, the first reinforcing rib 253, and the connecting ribs 26 can be integrally injection molded. Figure 6 As shown, when the valve core 20 includes a connecting rib 26, the first end 2531 of the first reinforcing rib 253 is connected to one side of one of the connecting ribs 26, and the second end 2532 is connected to the other side of the connecting rib 26, so that the first reinforcing rib 253 surrounds the first valve core shaft 251 for a whole circle.

[0033] Further reading Figure 5 and 8 In some embodiments, the first valve core shaft 251 includes a fixedly connected transmission connection portion 2511 and a cylindrical portion 2513. The transmission connection portion 2511 and the cylindrical portion 2513 are arranged along the height direction of the first valve core shaft 251. The valve core 20 is connected to the drive device of the control valve 1 through the transmission connection portion 2511, so that the drive device drives the valve core 20 to rotate. At least a portion of the cylindrical portion 2513 is located inside the first cavity 21, and at least a portion of the transmission connection portion 2511 is located outside the first cavity 21. The outer surface of the transmission connection portion 2511 can be a toothed structure, which can cooperate with the toothed structure in the drive device. Specifically, for example... Figure 8The toothed structure in the drive device can be fitted from top to bottom onto the outer surface of the transmission connection 2511. During rotation, the end face where the drive device connects to the transmission connection 2511 experiences significant stress. At this time, the transmission connection 2511 has a stress concentration surface S1 adjacent to the cylindrical portion 2513, and the first reinforcing rib 253 has a first edge S2 adjacent to the transmission connection 2511. Along the height direction of the first valve core shaft 251, the first edge S2 is lower than the stress concentration surface S1 or coincides with the plane containing the stress concentration surface S1. The distance between the first edge S2 and the stress concentration surface S1 is defined as a, where a is less than or equal to 10 mm. Through the above arrangement, the first reinforcing rib 253 can effectively increase the torsional strength of the valve core 20 during rotation.

[0034] like Figure 4 , Figures 8 to 11 In some embodiments, the valve body 10 further includes a top wall portion 13 located at one end of the side wall portion 11 and a first stop block 15 fixedly connected to the top wall portion 13. The top wall portion 13 and the side wall portion 11 are fixedly connected as an integral structure. Optionally, the top wall portion 13 and the side wall portion 11 can be integrally injection molded. The first stop block 15 protrudes from the top wall portion 13 and is located inside the valve cavity 101. The valve core 20 includes a top plate 201, a bottom plate 202, and a second stop block 203 spaced apart. The top plate 201... The top plate 201 and the bottom plate 202 are arranged along the height direction of the valve core 20, and the external conduction cavity 22 is located between the top plate 201 and the bottom plate 202. The second stop 203 is located on the side of the top plate 201 away from the bottom plate 202. When the valve core 20 rotates to the predetermined position, the first stop 15 abuts against the second stop 203 and restricts the valve core 20 from continuing to move toward the first stop 15. Along the circumference of the valve core 20, the first edge S2 of the first reinforcing rib 253 is set adjacent to the second stop 203.

[0035] Please refer to further information. Figure 4 In some embodiments, along the circumference of the valve core 20, the second stop 203 includes a first stop surface S3 and a second stop surface S4. Along the circumference of the valve core 20, the first edge S2 of the first reinforcing rib 253 is located between the first stop surface S3 and the second stop surface S4, and the distance between the first stop surface S3 and the first edge S21 is equal to the distance between the second stop surface S4 and the first edge S2. At this time, along the height direction of the valve core 20, the orthographic projection of the first edge S2 is located in the fan-shaped area formed by the inner surface of the second stop 203 and the center of the valve core 20, and is located in the middle of the area. This can play a good role in enhancing the torsional strength of the valve core 20 when the first stop 15 and the first stop surface S3 abut, and when the first stop 15 and the second stop surface S4 abut.

[0036] like Figure 12 and Figure 13As shown, in some embodiments, the first valve spindle 251 has a second cavity 2512, which penetrates the first valve spindle 251. The valve core 20 also includes a second reinforcing rib 254 and a first connecting plate 2514. The first connecting plate 2514 is located within the second cavity 2512 and is fixedly connected to the inner surface of the first valve spindle 251. Figure 13 As shown, the first connecting plate 2514 forms a cross-shaped structure. The second reinforcing rib 254 is located inside the second cavity 2512 and is fixedly connected to the inner surface of the first valve core shaft 251. The structure of the second reinforcing rib 254 is similar to that of the first reinforcing rib 253. Optionally, the second reinforcing rib 251 includes a third end, a fourth end, and a second main body. The second main body is connected between the third end and the fourth end. The third end and the fourth end have a height difference along the height direction of the valve core. The second main body includes a fixedly connected third sub-part and a fourth sub-part. The third sub-part is connected to the third end, and the fourth sub-part is connected to the fourth end. Along the height direction of the valve core, the orthographic projections of the third sub-part and the fourth sub-part are arranged circumferentially along the first valve core shaft 251 and do not overlap. With the above configuration, the second reinforcing rib 254 and the first valve core shaft 251 can be easily injection molded together while improving the torsional strength of the valve core. The second reinforcing rib 254 extends around the first connecting plate 2514 for less than or equal to one full circle, which facilitates demolding during the valve core manufacturing process.

[0037] Further reading Figure 8 , Figures 12 to 13 In some embodiments, the first valve spindle 251 includes a transmission connection portion 2511 and a cylindrical portion 2513 fixedly connected. The transmission connection portion 2511 and the cylindrical portion 2513 are arranged along the height direction of the first valve spindle 251. The transmission connection portion 2511 has a stress concentration surface S1 adjacent to the cylindrical portion 2513. The second reinforcing rib 254 has a second edge S5 adjacent to the transmission connection portion 2511. Along the height direction of the first valve spindle 251, the second edge S5 is higher than the stress concentration surface S1, lower than the stress concentration surface S1, or coincides with the plane where the stress concentration surface S1 is located. The distance between the second edge S5 and the stress concentration surface S1 is less than or equal to 10 mm. Optionally, the second reinforcing rib 254 can be disposed in the area corresponding to the transmission connection portion 2511, that is, the second reinforcing rib 254 can be disposed in the cavity enclosed by the inner surface of the transmission connection portion 2511. The second reinforcing rib 254 can spiral from the top surface of the transmission connection portion 2511 and extend to be flush with, higher than or lower than the stress concentration surface S1 (bottom surface of the transmission connection portion 2511) of the stress concentration surface S1 of the transmission connection portion 2511, so as to better improve the torsional strength of the valve core 20.

[0038] When the first valve core shaft 251 includes a transmission connection portion 2511, the transmission connection portion 2511 can be a toothed structure. Based on this, in order to improve the structural strength of the valve core 20, such as... Figure 1 , Figures 14 to 19 As shown, the valve core 20 may further include a second valve core shaft 252, which is connected to the drive device 50 so that the drive device 50 can drive the valve core 20 to rotate. The first valve core shaft 251 is connected to the second valve core shaft 252 via a transmission connection part 2511. The second valve core shaft 252 has a third cavity 2521. The control valve 1 also includes a third reinforcing rib 255 and a second connecting plate 2524. The second connecting plate 2524 is located inside the third cavity 2521 and is fixedly connected to the inner surface of the second valve core shaft 252. Figure 19 As shown, the second connecting plate 2524 can form a cross-shaped structure. The third reinforcing rib 255 is located inside the third cavity 2521 and is fixedly connected to the inner surface of the second valve core shaft 252. The structure of the third reinforcing rib 255 is similar to that of the first reinforcing rib 253. Optionally, the third reinforcing rib 255 includes a fifth end, a sixth end, and a third main body. The third main body is connected between the fifth end and the sixth end. The fifth end and the sixth end have a height difference along the height direction of the valve core. The third main body includes a fixedly connected fifth sub-part and a sixth sub-part. The fifth sub-part is connected to the fifth end, and the sixth sub-part is connected to the sixth end. Along the height direction of the valve core, the orthographic projections of the fifth sub-part and the sixth sub-part are arranged circumferentially along the second valve core shaft 252 and do not overlap. The above-mentioned configuration can improve the torsional strength of the second valve spindle 252, and at the same time facilitate the integral manufacturing of the third reinforcing rib 255, the second valve spindle 252, and the second connecting plate 2524. In this case, the third reinforcing rib 255 extends around the second connecting plate 2524 for less than or equal to one full circle, which facilitates manufacturing and demolding.

[0039] To improve the strength of the valve core 20, in some embodiments, the strength of the second valve core shaft 252 is greater than that of the first valve core shaft 251, and the linear expansion coefficient of the second valve core shaft 252 is better, which enables the control valve to be suitable for various temperature environments and improves the applicability of the control valve 1. The inner surface of the second valve core shaft 252 has a toothed structure, and the second valve core shaft 252 is clearance-fitted with the transmission connection part 2511 of the first valve core shaft 251 through the toothed structure and is transmitted and connected, so that the first valve core shaft 251 and the second valve core shaft 252 rotate synchronously. Optionally, the first valve spindle 251 may be composed of a combination of polyamide-66 (PA66) and glass fiber (GF), or a combination of polyphthalamide (PPA) and glass fiber (GF), or polyphenylene sulfide (PPS), and the second valve spindle 252 may be composed of a metal, polyphenylene sulfide (PPS), or a combination thereof.

[0040] In summary, according to the control valve 1 provided in the embodiment of the present invention, the control valve 1 has an external conducting cavity 22 and a first cavity 21. The external conducting cavity 22 can conduct or cut off the corresponding valve port 102, so that the control valve 1 can control multiple fluids. By setting the first cavity 21, the thickness of the control valve 1 at various positions can be made similar, preventing deformation caused by uneven wall thickness during the manufacturing process. The control valve 1 of the embodiment of the present invention also includes a first reinforcing rib 253 located in the first cavity 21, which can improve the strength of the control valve 1, enhance the torsional strength of the valve core 20, reduce the torsional deformation generated by the valve core 20 during rotation, thereby improving the fluid leakage problem of the control valve 1 caused by torsional deformation, and improving the working stability of the control valve 1. Furthermore, by setting the orthographic projection of the first sub-part 2531 and the orthographic projection of the second sub-part 2532 of the first reinforcing rib 253 to be arranged circumferentially along the first valve core axis 251 and without overlap, the valve core 20 is easy to demold during the manufacturing process, which facilitates its widespread application.

[0041] 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 sidewall portion, the control valve having a valve cavity, the sidewall portion forming at least a portion of the peripheral wall of the valve cavity, the valve core being rotatable, characterized in that, The valve core has an external conducting cavity and a first cavity. The external conducting cavity is distributed on the outer periphery of the first cavity. The valve core includes a first partition and a first valve core shaft. The control valve also includes a first reinforcing rib. The first partition is located between the external conducting cavity and the first cavity. The first valve core shaft is located on the inner periphery of the first partition and has a gap with the first partition. The first cavity includes the gap between the first valve core shaft and the first partition. The first reinforcing rib is located within the first cavity and is connected to the outer surface of the first valve core shaft and the inner surface of the first partition, respectively. The first reinforcing rib includes a first end, a second end, and a first main body. The first main body is connected between the first end and the second end. The first end and the second end have a height difference along the height direction of the valve core. The first main body includes a first sub-part and a second sub-part that are fixedly connected. The first sub-part is connected to the first end, and the second sub-part is connected to the second end. Along the height direction of the valve core, the orthographic projections of the first sub-part and the second sub-part are arranged circumferentially along the axis of the first valve core and do not overlap.

2. The control valve according to claim 1, characterized in that, The first valve spindle includes a fixedly connected transmission connection portion and a cylindrical portion, which are arranged along the height direction of the first valve spindle. At least a portion of the cylindrical portion is located within the first cavity, and at least a portion of the transmission connection portion is located outside the first cavity. The outer surface of the transmission connection portion has a toothed shape, and the transmission connection portion has a stress concentration surface adjacent to the cylindrical portion. The first reinforcing rib has a first edge adjacent to the transmission connection portion. Along the height direction of the first valve core shaft, the first edge is lower than the stress concentration surface or coincides with the plane where the stress concentration surface is located, and the distance between the first edge and the stress concentration surface is less than or equal to 10 mm.

3. The control valve according to claim 2, characterized in that, The valve body further includes a top wall portion located at one end of the side wall portion and a first stop block fixedly connected to the top wall portion. The top wall portion and the side wall portion are fixedly connected as an integral structure, and the first stop block protrudes from the top wall portion and is located within the valve cavity. The valve core includes a top plate, a bottom plate, and a second stop arranged at intervals. The top plate and the bottom plate are arranged along the height direction of the valve core, and the external conductive cavity is located between the top plate and the bottom plate. The second stop is located on the side of the top plate opposite to the bottom plate. When the valve core rotates to a predetermined position, the first stop and the second stop abut against each other, restricting the valve core from continuing to move towards the first stop. Along the circumference of the valve core, the first edge of the first reinforcing rib is disposed adjacent to the second stop.

4. The control valve according to claim 3, characterized in that, Along the circumference of the valve core, the second stop includes a first stop surface and a second stop surface. Along the circumference of the valve core, the first edge is located between the first stop and the second stop, and the distance between the first edge and the first stop is equal to the distance between the first edge and the second stop.

5. The control valve according to any one of claims 1 to 4, characterized in that, The valve core further includes a plurality of connecting ribs, which are arranged circumferentially along the first valve core shaft and at least a portion of each connecting rib is located within the first cavity. The connecting ribs are respectively connected to the inner surface of the first partition and the outer surface of the first valve core shaft. The first reinforcing rib is inserted into the connecting rib. The first partition, the first valve core, the first reinforcing rib, and the connecting rib are integrally injection molded.

6. The control valve according to any one of claims 1 to 4, characterized in that, The first valve spindle has a second cavity, and the valve spindle further includes a second reinforcing rib, which is located within the second cavity and is fixedly connected to the inner surface of the first valve spindle. The second reinforcing rib includes a third end, a fourth end, and a second main body. The second main body is connected between the third end and the fourth end. The third end and the fourth end have a height difference along the height direction of the valve core. The second main body includes a third sub-part and a fourth sub-part that are fixedly connected. The third sub-part is connected to the third end, and the fourth sub-part is connected to the fourth end. Along the height direction of the valve core, the orthographic projections of the third sub-part and the fourth sub-part are arranged circumferentially along the axis of the first valve core and do not overlap.

7. The control valve according to claim 6, characterized in that, The first valve spindle includes a fixedly connected transmission connection portion and a cylindrical portion, the transmission connection portion and the cylindrical portion being arranged along the height direction of the first valve spindle. The transmission connection portion has a stress concentration surface adjacent to the cylindrical portion, and the second reinforcing rib has a second edge adjacent to the transmission connection portion. Along the height direction of the first valve core shaft, the second edge is higher than the stress concentration surface, lower than the stress concentration surface, or coincides with the plane where the stress concentration surface is located, and the distance between the second edge and the stress concentration surface is less than or equal to 10 mm.

8. The control valve according to any one of claims 1 to 4, characterized in that, The first valve spindle includes a transmission connection portion, and the control valve further includes a second valve spindle and a drive device. The drive device is capable of driving the valve spindle to rotate. The second valve spindle is transmissionally connected to the drive device, and the second valve spindle is transmissionally connected to the first valve spindle through the transmission connection portion. The second valve spindle has a third cavity, and the control valve further includes a third reinforcing rib, which is located within the third cavity and is fixedly connected to the inner surface of the second valve spindle. The third reinforcing rib includes a fifth end, a sixth end, and a third main body. The third main body is connected between the fifth end and the sixth end. The fifth end and the sixth end have a height difference along the height direction of the valve core. The third main body includes a fifth sub-part and a sixth sub-part that are fixedly connected. The fifth sub-part is connected to the fifth end, and the sixth sub-part is connected to the sixth end. Along the height direction of the valve core, the orthographic projections of the fifth sub-part and the sixth sub-part are arranged circumferentially along the axis of the second valve core and do not overlap.

9. The control valve according to claim 8, characterized in that, The first valve spindle is composed of a combination of polyamide 66 and glass fiber, or a combination of polyphthalamide and glass fiber, or polyphenylene sulfide; the second valve spindle is composed of a metal, or one or a combination of polyphenylene sulfide. The first valve core shaft is integrally injection molded with the first partition plate and the first reinforcing rib. The inner surface of the second valve core shaft has a toothed structure. The transmission connection part of the second valve core shaft and the first valve core shaft are clearance-fitted and connected through the toothed structure.

10. The control valve according to any one of claims 1 to 4, characterized in that, The control valve includes at least five channels, one end of each channel passing through the side wall and communicating with the valve cavity, and the other end of each channel forming the valve port of the control valve. The valve core also includes multiple connecting ribs. The first end of the first reinforcing rib is connected to one side of one of the connecting ribs, and the second end is connected to the other side of the connecting rib. The first cavity includes a first sub-cavity and a second sub-cavity. The first sub-cavity and the second sub-cavity are respectively disposed on both sides of the first reinforcing rib along the height direction of the valve core. The first sub-cavity and the second sub-cavity are separated into independent spaces by the first reinforcing rib. The first partition is provided with a connecting hole at the cavity wall forming the first sub-cavity. The first sub-cavity is connected to a portion of the external conductive cavities through the connecting hole. A portion of the valve ports are connected to the first sub-cavity through the valve cavity.

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