Control valve

Abstract

The invention provides a control valve which comprises a valve seat and a valve element, the valve seat is provided with a first circulation hole, the valve element can block the first circulation hole, the valve element is provided with a rotating shaft parallel to the length direction of the valve element, and the valve element can rotate with the rotating shaft as the center line. Part of valve cavity space reserved for linear motion of the valve element of the control valve can be saved through rotation of the valve element, and the size of the control valve in the length direction of the valve element can be reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of fluid control, and particularly relates to a control valve. BACKGROUND

[0002] The control valve is a valve for controlling the flow state of fluid and adjusting the flow or pressure. The control valve has become an important component in a refrigeration system or a heating system. The control valve in the related art comprises a valve rod and a valve seat. The valve seat has a valve port. The valve rod can move relative to the valve seat along the length direction of the valve rod. The valve rod reaches the flow adjusting effect by cooperating with the valve port of the valve seat. However, the length of the valve rod is limited in the related art, which may cause the size of the control valve in the length direction of the valve rod to be large. SUMMARY

[0003] The technical problem to be solved by the application is to reduce the size of the control valve in the length direction of the valve core.

[0004] In order to solve the above technical problem, the application provides a control valve, comprising a valve seat and a valve core. The valve core can move relative to the valve seat. The control valve has a first cavity and a second cavity. The first cavity and the second cavity are arranged on both sides of the valve seat along the length direction of the valve core. At least part of the valve core is located in the second cavity.

[0005] The valve seat has a first flow-through hole. The control valve has an open valve state. In the open valve state, at least part of the first flow-through hole communicates the first cavity and the second cavity. The control valve has a closed valve state. In the closed valve state, at least part of the valve core blocks the first flow-through hole.

[0006] The valve core has a rotation axis. The rotation axis is parallel to the length direction of the valve core. The valve core can rotate with the rotation axis as the center line.

[0007] The control valve provided by the application comprises a valve seat and a valve core. The valve seat has a first flow-through hole. The valve core can block the first flow-through hole. The valve core has a rotation axis parallel to the length direction of the valve core. The valve core can rotate with the rotation axis as the center line. The rotation of the valve core can save part of the valve cavity space reserved for the linear motion of the valve core, which is beneficial to reduce the size of the control valve in the length direction of the valve core. BRIEF DESCRIPTION OF DRAWINGS

[0008] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the application. Those skilled in the art can obtain other drawings according to these drawings without any creative labor.

[0009] Figure 1 A perspective view of a control valve according to an embodiment of the present application;

[0010] Figure 2 A cross-sectional view of the control valve according to an embodiment of the present application; Figure 1

[0011] Figure 3 An exploded view of the control valve according to an embodiment of the present application; Figure 1

[0012] Figure 4a A structural view of a pipe portion in a control valve according to an embodiment of the present application;

[0013] Figure 4b A cross-sectional view of the pipe portion in the control valve according to an embodiment of the present application; Figure 4a

[0014] A perspective view of a valve seat in a control valve according to an embodiment of the present application; Figure 5a

[0015] A front view of 5a; Figure 5b

[0016] A perspective view of a first plate portion in a control valve according to an embodiment of the present application; Figure 6a

[0017] A front view of 6a; Figure 6b

[0018] A use state view of a flow-through state A in which the first plate portion and the valve seat are engaged in a control valve according to an embodiment of the present application; Figure 7

[0019] A use state view of a flow-through state B in which the first plate portion and the valve seat are engaged in a control valve according to an embodiment of the present application; Figure 8

[0020] A use state view of a flow-through state C in which the first plate portion and the valve seat are engaged in a control valve according to an embodiment of the present application; Figure 9

[0021] A use state view of a flow-through state D in which the first plate portion and the valve seat are engaged in a control valve according to an embodiment of the present application; Figure 10

[0022] A use state view of a non-flow-through state E in which the first plate portion and the valve seat are engaged in a control valve according to an embodiment of the present application. Figure 11

[0023] ​​​In the figure: 1-valve seat; 10-first flow hole; 10a-first flow hole group A; 101a-first flow hole A; 10b-first flow hole group B; 101b-first flow hole B; 100-valve seat cavity; 11-second cylinder part; 12-second plate part; 2-valve core; 20-second flow hole; 201-second A channel; 202-second B channel; 20a-second flow hole group A; 20b-second flow hole group B; 20c-second flow hole group C; 20d-second flow hole group D; 21-first plate part; 22-tube part; 22a-constricted part; 22b-tub; 23-positioning pin; 23a-first positioning hole A; 23b-first positioning hole B; L1-rotation axis; L11-first axis; L2-second axis; S-length direction; 3-first connecting tube part; 300-first flow cavity; 3a-expanding part; 4-second connecting tube part; 400-second flow cavity; 4a-first cylinder part; 40a-first cylinder cavity; 5-rotor part; X1-first direction; X2-second direction; 7-limiting part; 70-limiting groove; 71-protrusion; 8-stand; 81-base part; 82-stand plate; 91-first sealing member; 92-second sealing member. DETAILED DESCRIPTION

[0024] The exemplary embodiments will be described in detail herein below with reference to the drawings. In the following description, the same or similar components are designated by the same or similar reference numerals, and a repeated description thereof will be omitted.

[0025] The terms used in the present application are merely used to describe particular embodiments, and are not intended to limit the present application.

[0026] It should be understood that the use of "first", "second", and "third" words and the like in the present application specification and claims are not intended to denote any sequential, numerical, or importance, but are merely used to distinguish different components. Similarly, "one" or "a" and the like do not denote a quantity limitation, but mean the presence of at least one; "multiple" means two or more quantities. Unless otherwise indicated, "front", "rear", "lower", and / or "upper" and the like similar words are merely for convenience of description, and are not limited to a position or a spatial orientation. "Include" or "contain" and the like similar words mean that the elements or objects appearing before "include" or "contain" cover the elements or objects listed after "include" or "contain" and their equivalents, and do not exclude other elements or objects.

[0027] The exemplary embodiments of the present application will be described in detail below with reference to the accompanying drawings. The features of the following embodiments and implementations can be mutually supplemented or combined with each other without conflict.

[0028] Applicant found that there are many reasons for the large size of the control valve along the length direction of the valve stem / valve core 2, and most of them are attributed to the length of the valve stem / valve core 2 and the improvement of the length and structure of the valve stem / valve core 2. However, after in-depth study of the structure of the control valve, the applicant found that changing the movement of the valve stem / valve core 2 in the control valve, i.e. changing the linear motion to rotary motion, can save part of the valve cavity space reserved for the linear motion of the valve stem / valve core 2, which is conducive to reducing the size of the control valve along the length direction of the valve stem / valve core 2.

[0029] Based on the above findings, the applicant proposes a control valve, which comprises a valve seat 1 and a valve core 2, the valve core 2 can move relative to the valve seat 1, the control valve has a first cavity A1 and a second cavity A2, the first cavity A1 and the second cavity A2 are arranged on both sides of the valve seat 1 along the length direction S of the valve core 2, and at least part of the valve core 2 is located in the second cavity A2.

[0030] The valve seat 1 has a first flow-through hole 10, the control valve has an open valve state, in the open valve state, at least part of the first flow-through hole 10 communicates the first cavity A1 and the second cavity A2, the control valve has a closed valve state, in the closed valve state, at least part of the valve core 2 blocks the first flow-through hole 10.

[0031] The valve core 2 has a rotary axis L1, the rotary axis L1 is parallel to the length direction S of the valve core 2, and the valve core 2 can rotate with the rotary axis L1 as the center line.

[0032] The control valve provided by the present application comprises a valve seat 1 and a valve core 2, the valve seat 1 has a first flow-through hole 10, the valve core 2 can block the first flow-through hole 10, the valve core 2 has a rotary axis L1 parallel to the length direction of the valve core 2, and the valve core 2 can rotate with the rotary axis L1 as the center line. Through the rotation of the valve core 2, part of the valve cavity space reserved for the linear motion of the valve core 2 can be saved, which is conducive to reducing the size of the control valve along the length direction S of the valve core 2.

[0033] According to one specific embodiment of the present application, please refer to Figures 1 to 11 The control valve comprises a valve seat 1 and a valve core 2, the valve core 2 can move relative to the valve seat 1, the control valve has a first cavity A1 and a second cavity A2, the first cavity A1 and the second cavity A2 are arranged on both sides of the valve seat 1 along the length direction S of the valve core 2, and at least part of the valve core 2 is located in the second cavity A2.

[0034] During the movement of the valve core 2 relative to the valve seat 1, whether the first cavity A1 and the second cavity A2 are communicated can be adjusted.

[0035] The valve seat 1 has a first flow-through hole 10, and the control valve has an open valve state in which at least part of the first flow-through hole 10 is in communication with the first cavity A1 and the second cavity A2, and at least part of the first flow-through hole 10 is in a conductive state, that is, fluid can flow to the first cavity A1 or the second cavity A2 through the first flow-through hole 10; the control valve has a closed valve state in which at least part of the valve core 2 blocks the first flow-through hole 10, and fluid cannot enter the first cavity A1 or the second cavity A2 from the first flow-through hole 10 blocked by the valve core 2.

[0036] In the embodiment, the valve core 2 has a rotation axis L1, and the valve core 2 can rotate with the rotation axis L1 as the center line, wherein the rotation axis L1 is parallel to the length direction S of the valve core 2, as shown in Figure 1 、 Figure 2 and Figure 3 By rotating the valve core 2, the on-off of the first flow-through hole 10 can be adjusted, that is, by rotating the valve core 2, the switching of the control valve between the open valve state and the closed valve state can be realized.

[0037] The control valve in the related art has a large size along the length direction S of the valve core 2, and the size of the control valve along the length direction S of the valve core 2 is defined as the axial size of the control valve, so the axial size of the control valve in the related art is large, and the related art is mostly attributed to the length of the valve core 2 and focuses on the improvement of the length and structure of the valve core 2, but due to the constraints of the control valve adjustment effect and noise, etc., the effect of optimizing the axial size of the control valve by changing the length and structure of the valve core 2 is not ideal.

[0038] Applicants have found through a large number of researches that during the movement of the valve core 2 along the length direction S relative to the valve seat 1, a certain space needs to be reserved inside the control valve along the length direction S of the valve core 2 to provide space for the linear movement of the valve core 2 relative to the valve seat 1, thereby resulting in a large size of the control valve along the length direction S of the valve core 2, that is, a large axial size of the control valve in the related art. In combination with the above finding, if the movement mode of the valve core 2 is changed from linear movement along the length direction S of the valve core 2 to rotational movement with the rotation axis L1 as the center line, part of the valve cavity space reserved for the linear movement of the valve core 2 can be saved, and thus it is beneficial to reduce the size of the control valve along the length direction of the valve core 2, that is, it is beneficial to reduce the axial size of the control valve.

[0039] Based on the above finding, the technical scheme of the present application includes a valve seat 1 and a valve core 2, the valve core 2 has a rotation axis L1 parallel to the length direction S of the valve core 2, and the valve core 2 can rotate with the rotation axis L1 as the center line, and by rotating the valve core 2, the conduction of the first flow-through hole 10 can be controlled to realize the adjustment effect of the control valve on the fluid.

[0040] The valve core 2 has a second flow-through hole 20, and the first flow-through hole 10 can communicate with the second flow-through hole 20. During the movement of the valve core 2 relative to the valve seat 1, the communication between the first flow-through hole 10 and the second flow-through hole 20 can be adjusted. After the fluid enters the control valve, it sequentially passes through the first flow-through hole 10 and the second flow-through hole 20 to realize the adjustment process of the control valve on the fluid.

[0041] Of course, in other embodiments, after the fluid enters the control valve, it can sequentially pass through the second flow-through hole 20 and the first flow-through hole 10 to realize the adjustment process of the control valve on the fluid.

[0042] The second cavity A2 includes the second flow-through hole 20. In the open valve state, at least part of the first flow-through hole 10 communicates the first cavity A1 and at least part of the second flow-through hole 20.

[0043] In this embodiment, the control valve has a first state, and the control valve can be adjusted to be in the first state by rotating the valve core 2. In the first state, the first flow-through hole 10 communicates with the second flow-through hole 20, and the fluid can sequentially flow through the communicated first flow-through hole 10 and the second flow-through hole 20. The control valve has a second state, and the control valve can be adjusted to be in the second state by rotating the valve core 2. In the second state, the first flow-through hole 10 does not communicate with the second flow-through hole 20, and the fluid cannot enter the second flow-through hole 20 through the first flow-through hole 10.

[0044] The first state is the open valve state described above, and the second state is the closed valve state described above.

[0045] Of course, in other embodiments, the control valve has a first state, and the control valve can be adjusted to be in the first state by rotating the valve core 2. In the first state, the first flow-through hole 10 communicates with the second flow-through hole 20, and the fluid can sequentially flow through the communicated second flow-through hole 20 and the first flow-through hole 10. The control valve has a second state, and the control valve can be adjusted to be in the second state by rotating the valve core 2. In the second state, the first flow-through hole 10 does not communicate with the second flow-through hole 20, and the fluid cannot enter the first flow-through hole 10 through the second flow-through hole 20.

[0046] The present application can achieve the effect of reducing the axial size of the control valve by changing the movement mode of the valve core 2, rather than improving the length of the valve core 2 and the structure of the valve core 2. The present application can save part of the valve cavity space reserved for the linear movement of the valve core 2, which is beneficial to reducing the size of the control valve along the length direction of the valve core 2, that is, the axial size of the control valve in the present application is reduced.

[0047] In this embodiment, the valve core 2 has a first axis L11, and the first axis L11 coincides with the rotation axis L1. The valve core 2 can rotate around the first axis L11, and the valve core 2 can block the first flow-through hole 10.

[0048] In this embodiment, as Figure 2 As shown in Figure 5, the valve seat 1 has a valve seat cavity 100, and at least part of the valve core 2 is located in the valve seat cavity 100, which is conducive to improving the integration of the valve seat 1 and the valve core 2. The volume of the valve seat 1 and the valve core 2 after they are fitted together is reduced, which is beneficial to the development of the fitting structure of the valve seat 1 and the valve core 2 towards miniaturization.

[0049] In this embodiment, the second cavity A2 includes a valve seat cavity 100.

[0050] This embodiment is described using the example of the entire valve core 2 being located in the valve seat cavity 100. Figure 2 As shown, the valve seat 1 and valve core 2 mating structure in this embodiment occupy less space in the control valve.

[0051] In this embodiment, the first flow hole 10 extends along the rotation axis L1 and penetrates the end faces of both ends of the valve seat 1, and the second flow hole 20 extends along the rotation axis L1 and penetrates the end faces of both ends of the valve core 2. In the first state / open valve state, at least a portion of the first flow hole 10 connects the first cavity A1 and at least a portion of the second flow hole 20.

[0052] Valve seat 1 and valve core 2 are assembled and connected, and valve seat 1 has a second axis L2. Valve core 2 can rotate about the second axis L2 as its center line, wherein the rotation axis L1 coincides with the second axis L2, and valve core 2 can rotate relative to valve seat 1. This design reduces the radial dimension of the control valve; the radial direction is perpendicular to the length direction S of valve core 2. It should be noted that the assembly and connection of valve seat 1 and valve core 2 indicates that valve seat 1 and valve core 2 are two directly connected components, or that valve seat 1 and valve core 2 are two indirectly connected components via a third component.

[0053] This embodiment describes the indirect connection between valve seat 1 and valve core 2 via a third component as an example. Figure 2 As shown, a first sealing element 91 is designed between the valve seat 1 and the valve core 2. The valve core 2 has a first groove. The first sealing element 91 is at least partially located in the first groove. The valve seat 1 contacts the first sealing element 91 and seals at the contact point. The valve core 2 contacts the first sealing element 91 and seals at the contact point.

[0054] In some other embodiments, the valve seat 1 has a first groove, the first seal 91 is at least partially located in the first groove, the valve seat 1 contacts the first seal 91 and seals at the contact, and the valve core 2 contacts the first seal 91 and seals at the contact.

[0055] In other embodiments, valve seat 1 has a first A groove, valve core 2 has a first B groove, a first seal 91 is at least partially located in the first A groove, a first seal 91 is at least partially located in the first B groove, valve seat 1 contacts and seals the first seal 91 at the contact point, and valve core 2 contacts and seals the first seal 91 at the contact point.

[0056] In this embodiment, as Figure 2 As shown, the control valve includes a first connecting part 3 and a second connecting part 4. The first connecting part 3 has a first flow channel cavity 300 extending along the rotation axis L1 and communicating with a first cavity A1. The second connecting part 4 has a second flow channel cavity 400 extending along the rotation axis L1 and communicating with a second cavity A2. The control valve has a first state / open valve state. In the first state / open valve state, the fluid has a type I flow path that flows from the first flow channel cavity 300 through the first cavity A1 and the second cavity A2 to the second flow channel cavity 400, or the fluid has a type I flow path that flows from the second flow channel cavity 400 through the second cavity A2 and the first cavity A1 to the first flow channel cavity 300. It is important to note that the Type I flow path here means that the fluid flows in a straight line. In other words, the fluid can flow along a path that is located or approximately in the same straight line. In other words, the flow direction does not change during the flow of the fluid. Therefore, it can reduce the probability of collisions caused by bends and changes in direction during the fluid flow, thereby reducing noise.

[0057] In this embodiment, the first cavity A1 includes a first flow channel cavity 300, which constitutes at least a portion of the first cavity A1; the second cavity A2 includes a second flow channel cavity 400, which constitutes at least a portion of the second cavity A2.

[0058] At least one of the first connecting part 3 and the second connecting part 4 is connected and fixed to the valve seat 1, at least part of the valve seat 1 is located in the first flow channel cavity 300, and at least part of the valve seat 1 is located in the second flow channel cavity 400.

[0059] This embodiment is described using the example of valve seat 1 being fixedly connected to the first connecting pipe 3 and valve seat 1 being fixedly connected to the second connecting pipe 4. Figure 2 As shown, valve seat 1 and first connecting pipe 3 are sealed at the connection point, and valve seat 1 and second connecting pipe 4 are also sealed at the connection point. Simultaneously achieving a tight fit between valve seat 1 and both the first connecting pipe 3 and the second connecting pipe 4 improves the overall connection strength and sealing performance of the control valve.

[0060] like Figure 2 and Figure 3As shown, the first connecting section 3 includes a first pipe section, an expansion section 3a, and a second pipe section. The expansion section 3a is designed as a conical or approximately conical structure, while the first and second pipe sections are designed as cylindrical or approximately cylindrical structures. The expansion section 3a is located between the first and second pipe sections and connects them. The diameter of the first pipe section is smaller than the diameter of the second pipe section, and the valve seat 1 is tightly fitted to the second pipe section. This structural design of the first connecting section 3 is beneficial for increasing the fluid flow rate at the inlet of the control valve.

[0061] In this embodiment, the first tube, the expansion section 3a, and the second tube are integrated as a single piece, which facilitates processing and assembly. Of course, in other embodiments, any two of the first tube, the expansion section 3a, and the second tube can be designed as separate structures.

[0062] In this embodiment, as Figure 2 and Figure 3 As shown, the second connecting pipe 4 includes a first cylindrical part 4a, the valve seat 1 and the first cylindrical part 4a are arranged along the length direction of the rotation axis L1, and at least one of the first connecting pipe 3 and the valve seat 1 is connected to the first cylindrical part 4a.

[0063] like Figure 2 As shown, the first cylindrical part 4a is designed as a cylindrical or approximately cylindrical structure. The outer diameter of the first cylindrical part 4a is the same as the outer diameter of the valve seat 1. The valve seat 1 has a step to limit the first cylindrical part 4a, so as to realize the quick installation of the first cylindrical part 4a and the valve seat 1, and the installation accuracy is high.

[0064] like Figure 2 As shown, the first connecting part 3 and the second connecting part 4 form most of the outer shell of the control valve, thereby improving the sealing performance of the control valve. Furthermore, the first cylindrical part 4a has a first cylindrical cavity 40a, with at least a portion of the valve core 2 located in the first cylindrical cavity 40a, and the axis of the first cylindrical part 4a coincides with the axis of the valve core 2. By housing the valve seat 1 and the valve core 2 within the space formed by the first connecting part 3 and the second connecting part 4, it is beneficial for the control valve to be miniaturized.

[0065] In addition, the applicant has found through extensive research that the driving components of control valves in related technologies generally include a rotary driving part and a linear driving part. The linear driving part connects the rotary driving part and the valve core 2. That is, the rotary driving force generated by the driving component needs to be converted into a linear driving force acting on the valve core 2. If the movement of the valve core 2 in the control valve is changed so that the linear movement relative to the valve seat 1 is changed to the rotary movement relative to the valve seat 1, the linear driving part can be eliminated, which is beneficial to simplifying the structure of the control valve.

[0066] Based on the above findings, in the technical solution provided by this application, by rotating the valve core 2, it is possible to control whether the first flow hole 10 and the second flow hole 20 are connected or not, so as to realize the regulating effect of the control valve on the fluid. This allows the control valve of this application to omit the linear drive part, and thus the control valve structure of this application is simpler.

[0067] In this embodiment, the control valve includes a drive component, which includes a rotor 5. The rotor 5 is connected to the valve core 2 in a transmission manner. The rotor 5 can rotate around the rotation axis L1. Under the action of the rotor 5, the valve core 2 can rotate around the rotation axis L1 as the center line.

[0068] The rotor section 5 is located in the first cylindrical cavity 40a, which helps to reduce the axial dimension of the control valve.

[0069] Furthermore, the control valve includes a support 8, at least a portion of which is connected to the valve seat 1.

[0070] In this embodiment, the support 8 includes a base part 81 and a support plate 82. The base part 81 and the support plate 82 are connected and are an integral part. The valve seat 1, the first connecting pipe part 3 and the cylinder part 4a are all connected to the base part 81, which helps to improve the sealing performance and connection firmness of the control valve. The support plate 82 is used to realize the installation and fixation of the coil and other components in the drive component.

[0071] like Figure 3 , Figure 5a and Figure 5b As shown, the valve seat 1 includes a second cylindrical part 11 and a second plate part 12. In this embodiment, the second cylindrical part 11 and the second plate part 12 are integral parts. It should be noted that the integral parts here include injection molded parts of the same material, injection molded parts of different materials, casting parts of the same material, forging parts of the same material, or machining parts of the same material.

[0072] In some other embodiments, the second cylindrical part 11 and the second plate part 12 can be two separate components. The separate second cylindrical part 11 and the second plate part 12 are assembled and connected. The assembly and connection of the second cylindrical part 11 and the second plate part 12 includes, but is not limited to, bonding, welding, screw connection, bolt connection, snap-fit, etc.

[0073] The inner wall of the second cylindrical part 11 in this embodiment is designed to be cylindrical or approximately cylindrical, and the outer wall of the second cylindrical part 11 in this embodiment is designed to be cylindrical or approximately cylindrical. The axial direction of the second cylindrical part 11 is consistent with the length direction S of the valve core 2.

[0074] In this embodiment, the second plate portion 12 is a thin plate-like structure that is cylindrical or substantially cylindrical, such as... Figure 5a and 5b As shown.

[0075] like Figure 2 and Figure 3 As shown, the valve core 2 in this embodiment includes a first plate portion 21, which is a thin plate structure that is cylindrical or substantially cylindrical. The dimension of the first plate portion 21 along the length direction S of the valve core 2 may be the same as or different from the dimension of the second plate portion 12 along the length direction S of the valve core 2. In other words, the thickness of the first plate portion 21 and the thickness of the second plate portion 12 may be the same as or different.

[0076] like Figure 2 As shown, the valve core 2 in this embodiment includes a tube 22, which is connected to the first plate 21. In this embodiment, the tube 22 and the first plate 21 are connected by a positioning pin 23, resulting in a simple connection structure. Figure 3 and Figure 6a As shown, the first plate portion 21 has a first positioning A hole 23a, and the tube portion 22 has a first positioning B hole 23b. The positions of the first positioning A hole 23a and the first positioning B hole 23b correspond to each other. At least a portion of the positioning pin 23 is located in the first positioning A hole 23a, and at least a portion of the positioning pin 23 is located in the first positioning B hole 23b. In other words, the end of the first positioning A hole 23a near the tube portion 22 is defined as the first A opening, and the end of the first positioning B hole 23b near the first plate portion 21 is defined as the first B opening. The first A opening and the first B opening at least partially coincide / overlap. In this embodiment, the first A opening and the first B opening are the same size and have the same shape. The positioning pin 23 in this embodiment has a cylindrical structure, which is simple in structure and easy to connect.

[0077] In this embodiment, the first positioning A hole 23a is a blind hole, and the first positioning B hole 23b is a blind hole.

[0078] In this embodiment, two first positioning holes A 23a are provided, and the two first positioning holes A 23a are symmetrical about the center of the first plate portion 21. Correspondingly, two first positioning holes B 23b are provided, and the two first positioning holes B 23b are also symmetrical about the center of the first plate portion 21 / the axis of the tube portion 22, so that the first plate portion 21 and the tube portion 22 are subjected to uniform force at the connection.

[0079] The control valve includes a limit part 7, such as Figure 2 and Figure 3 As shown, the limiting part 7 connects the valve seat 1 and the valve core 2. Specifically, the limiting part 7 connects the second plate part 12 and the first plate part 21. The limiting part 7 includes a protrusion 71 and a limiting groove 70. The limiting groove 70 is located on the valve seat 1, and at least part of the protrusion 71 is located in the limiting groove 70. The protrusion 71 is rotatable about the rotation axis L1 as the center line. The protrusion 71 is rotatable about the rotation axis L1 as the center line in the limiting groove 70.

[0080] At least one limiting groove 70 is provided, and similarly, at least one protrusion 71 is also provided, such as Figure 5a and 5b As shown, this embodiment has two limiting grooves 70 and two protrusions 71. The limiting grooves 70 can limit the rotation angle of the protrusions 71 and the valve core 2.

[0081] In addition, the valve core 2 has a limiting hole 72, and the protrusion 71 is at least partially located in the limiting hole 72. The limiting hole 72 is used to realize the installation connection between the protrusion 71 and the valve core 2.

[0082] In this embodiment, the limiting hole 72 is connected to the first positioning A hole 23a. In other words, the limiting hole 72 and the first positioning A hole 23a can form a through hole that penetrates both ends of the first plate portion 21 to facilitate processing.

[0083] In this embodiment, the second flow hole 20 includes a second A channel 201 and a second B channel 202 that are connected. The second A channel 201 is located in the first plate portion 21, and the second B channel 202 is located in the tube portion 22, such as... Figure 3 As shown.

[0084] The second cavity A2 includes a second B channel 202, which is connected to the second flow channel cavity 400. The first flow channel cavity 300 is connected to the first flow hole 10. In this embodiment, by rotating the valve core 2, the connection and disconnection between the first flow hole 10 and the second A channel 201 can be achieved, thereby achieving the connection and disconnection between the first flow channel cavity 300 and the second B channel 202, that is, the connection and disconnection between the first flow channel cavity 300 and the second flow channel cavity 400 can be achieved.

[0085] The second channel A 201 extends along the length direction S of the valve core 2 and passes through the first plate portion 21, and the second channel B 202 extends along the length direction S of the valve core 2 / the length direction of the tube portion 22 and passes through the tube portion 22. The length direction of the tube portion 22 is consistent with / parallel to the length direction S of the valve core 2.

[0086] In this embodiment, the tube portion 22 includes a necked section 22a, which is configured as a trumpet-shaped structure. The outer diameter of the necked section 22a gradually decreases from the first plate portion 21 towards the rotor portion 5. Figure 2 As shown.

[0087] The fluid radius of the second B channel 202 located at the neck 22a gradually decreases from the first plate portion 21 to the rotor portion 5. In other words, the inner diameter of the neck 22a gradually decreases from the first plate portion 21 to the rotor portion 5. Figure 2 As shown, this allows for the regulation of the fluid pressure within the second B channel 202.

[0088] The tube 22 connects the rotor 5 and the first plate 21; in other words, the rotor 5 and the first plate 21 are connected through the tube 22.

[0089] The tube section 22 includes a boss 22b, which is located at the end of the tube section 22 away from the first plate section 21. The boss 22b is connected to the rotor section 5 and is used to connect and fix the tube section 22 to the rotor section 5.

[0090] To facilitate the installation of the boss 22b, in this embodiment, the boss 22b and the tube 22 are designed as two independent separate parts. The boss 22b is connected to the tube 22. The connection between the boss 22b and the tube 22 includes, but is not limited to, one or more of the following: gluing, welding, screw connection, bolt connection, snap-fit, etc.

[0091] Specifically, the rotor part 5 has a mounting groove, which is provided along the arc-shaped inner wall of the rotor part 5. The mounting groove is cut with a cross section perpendicular to the length direction S of the valve core 2, resulting in an irregular cross section profile. The boss 22b is at least partially located in the mounting groove, and the boss 22b is cut with a cross section perpendicular to the length direction S of the valve core 2, so that an irregular shape with the same cross section profile as the mounting groove can be obtained, thereby realizing the connection between the rotor part 5 and the valve core 2.

[0092] like Figure 4b The shaded area shown represents the irregular cross-sectional profile of the boss 22b; correspondingly, the mounting groove also has... Figure 4b The irregular cross-sectional profile shown in Figure 4 is simple in structure and can provide a stable connection force between the rotor 5 and the valve core 2.

[0093] like Figure 2 As shown, a second sealing element 92 is designed between the valve core 2 and the second connecting pipe 4. Specifically, the second sealing element 92 is located between the pipe 22 and the first cylindrical body 4a. The second sealing element 92 connects the pipe 22 and the first cylindrical body 4a to improve the connection and sealing performance between the pipe 22 and the first cylindrical body 4a.

[0094] Furthermore, the second seal 92 is located at one end of the tube portion 22 away from the first plate portion 21, and the tube portion 22 has a groove for limiting the second seal 92, with the second seal 92 at least partially located in the groove.

[0095] like Figure 2 As shown, the dimension of the second cylindrical part 11 along the length direction S of the valve core 2 is larger than the dimension of the first plate part 21 along the length direction S of the valve core 2. The second cylindrical part 11 has a second cylindrical cavity, so that the first plate part 21 is completely located in the second cylindrical cavity, thereby reducing the axial dimension of the control valve.

[0096] In addition, the first flow hole 10 includes a first flow A hole group 10a and a first flow B hole group 10b, such as Figure 5a and Figure 5bAs shown, the first flow A hole group 10a includes a plurality of first flow A holes 101a, which are arranged along the first direction X1. The first flow B hole group 10b includes a plurality of first flow B holes 101b, which are arranged along the second direction X2. The first direction X1 and the second direction X2 are coplanar and perpendicular to the second direction X2.

[0097] In this embodiment, the multiple first flow A holes 101a are the same size and shape, and there are 8 first flow A holes 101a in this embodiment. The multiple first flow B holes 101b are the same size and shape, and there are 8 first flow B holes 101b in this embodiment to facilitate processing.

[0098] Of course, in some other embodiments, the size and shape of the plurality of first flow A holes 101a may be different, the size and shape of the plurality of first flow B holes 101b may be different, the number of first flow A holes 101a may be set to other numbers, the number of first flow B holes 101b may be set to other numbers, and the number of first flow A holes 101a and first flow B holes 101b may be different.

[0099] Furthermore, such as Figure 6a and Figure 6b As shown, in this embodiment, the second flow hole 20 includes a second flow A hole group 20a and a second flow B hole group 20b. The second flow A hole group 20a can be rotated 180° around the rotation axis L1 to obtain the second flow C hole group 20c. The second flow B hole group 20b can be rotated 180° around the rotation axis L1 to obtain the second flow D hole group 20d.

[0100] In this embodiment, the second flow A hole group 20a is the same as the second flow C hole group 20c, the second flow B hole group 20b is the same as the second flow D hole group 20d, and the second flow A hole group 20a is the same as the second flow B hole group 20b, thereby facilitating the processing of the second flow hole 20.

[0101] Of course, in some other embodiments, at least two of the second flow A hole group 20a, the second flow B hole group 20b, the second flow C hole group 20c, and the second flow D hole group 20d may be different.

[0102] The second flow hole group A 20a, the second flow hole group B 20b, the second flow hole group C 20c and the second flow hole group D 20d are evenly distributed in the first plate part 21 with the rotation axis L1 as the center line. The angle between the second flow hole group A 20a and the second flow hole group B 20b at the same position is 45 degrees.

[0103] The description will be carried out using the second flow A hole group 20a as an example, such as... Figure 6bAs shown, the second flow A hole group 20a includes a second flow A1 hole 201a, a second flow A2 hole 202a, a second flow A3 hole 203a, and a second flow A4 hole 204a. The second flow A1 hole 201a, the second flow A2 hole 202a, the second flow A3 hole 203a, and the second flow A4 hole 204a are arranged sequentially from the center of the first plate portion 21 toward the outer contour. The fluid flow cross-sectional area of ​​the second flow A1 hole 201a, the second flow A2 hole 202a, the second flow A3 hole 203a, and the second flow A4 hole 204a increases sequentially.

[0104] Since the second flow hole group B 20b, the second flow hole group C 20c, and the second flow hole group D 20d are the same as the second flow hole group A 20a, their description is omitted here. Please refer to the detailed description of the second flow hole group A 20a for details.

[0105] Of course, in some other embodiments, the number of flow holes included in the second flow hole group 20a may be set to other values, and at least two of the fluid flow cross sections between each flow hole are the same.

[0106] The fluid flow cross-sectional area of ​​the first flow hole 10 is less than or equal to the fluid flow cross-sectional area of ​​the second flow hole 20.

[0107] In this embodiment, the control valve has four flow states, defined as flow state A, flow state B, flow state C, and flow state D. The control valve has the following characteristics: Figure 7 In the flow state A shown, the second flow holes A1 201a, A2 202a, A3 203a, and A4 204a are all connected / conducting, meaning that fluid can flow into each of the second flow holes A1 201a, A2 202a, A3 203a, and A4 204a respectively through the first flow hole 10. At this time, the flow rate of the fluid flowing through the control valve is at its maximum. The control valve has the following characteristics: Figure 8 In the flow state B shown, the second flow holes A2 202a, A3 203a, and A4 204a are all connected / conducting, while the second flow hole A1 201a is non-conducting. That is, fluid can flow through the first flow hole 10 into the second flow holes A2 202a, A3 203a, and A4 204a respectively. At this time, the flow rate of the fluid flowing through the control valve is less than the flow rate in flow state A. The control valve has the following characteristics: Figure 9In the flow state C shown, both the second flow holes A3 203a and A4 204a are connected / conducting, while the second flow holes A1 201a and A2 202a are non-conducting. That is, fluid can flow through both the first flow hole 10 into the second flow holes A3 203a and A4 204a respectively. At this time, the flow rate of the fluid flowing through the control valve is less than the flow rate in flow state B. The control valve has the following characteristics: Figure 10 In the flow state D shown, only the second flow hole A4 204a is in a connected / conducting state, while the second flow holes A1 201a, A2 202a, and A3 203a are all in a non-conducting state. That is, fluid can flow through the first flow hole 10 and only into the second flow hole A4 204a. In this state, the flow rate of the fluid flowing through the control valve is less than the flow rate in flow state C. Of course, the control valve has... Figure 10 The non-flow state E / closed state shown is characterized by the following conditions: in the non-flow state E / closed state, the second flow A1 hole 201a, the second flow A2 hole 202a, the second flow A3 hole 203a and the second flow A4 hole 204a are all in a non-conducting / closed state, that is, the fluid cannot flow into the second flow A hole group 20a through the first flow hole 10. At this time, the flow rate of the fluid flowing through the control valve is zero or basically zero.

[0108] Some technical features of some implementation methods in the above embodiments can be combined or replaced.

[0109] The technical principles of this application have been described above in conjunction with specific embodiments. However, it should be noted that these descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, other technical solutions or equivalent substitutions of this application that can be conceived by those skilled in the art without creative effort will fall within the scope of protection of this application.

Claims

1. A control valve, characterized in that: The control valve includes a valve seat and a valve core, the valve core being movable relative to the valve seat, the control valve having a first chamber and a second chamber, the first chamber and the second chamber being disposed on both sides of the valve seat along the length direction of the valve core, at least a portion of the valve core being located in the second chamber; The valve seat has a first flow hole, the control valve has an open state, in which at least a portion of the first flow hole connects the first chamber and the second chamber, and the control valve has a closed state, in which at least a portion of the valve core blocks the first flow hole. The valve core has a rotation axis that is parallel to the length direction of the valve core, and the valve core is capable of rotating about the rotation axis as a center line.

2. The control valve according to claim 1, characterized in that: The valve core has a first axis that coincides with the rotation axis. The valve core is capable of rotating about the first axis and can block the first flow hole. The valve seat has a valve seat cavity, and at least a portion of the valve core is located in the valve seat cavity.

3. The control valve according to claim 1, characterized in that: The first flow hole extends along the rotation axis and penetrates the end faces of both ends of the valve seat. The valve core has a second flow hole, which extends along the rotation axis and penetrates the end faces of both ends of the valve core. The first flow hole can communicate with the second flow hole. The valve seat has a second axis, and the valve core is rotatable about the second axis. The rotation axis coincides with the second axis. In the open valve state, at least a portion of the first flow hole connects the first cavity and at least a portion of the second flow hole.

4. The control valve according to claim 2 or 3, characterized in that: The control valve includes a first connector and a second connector. The first connector has a first flow channel cavity extending along the rotation axis and communicating with the first cavity. The second connector has a second flow channel cavity extending along the rotation axis and communicating with the second cavity. In the open valve state, the fluid has a type I flow path that flows from the first flow channel cavity through the first cavity and the second cavity to the second flow channel cavity, or the fluid has a type I flow path that flows from the second flow channel cavity through the second cavity and the first cavity to the first flow channel cavity.

5. The control valve according to claim 4, characterized in that: At least one of the first connecting part and the second connecting part is connected and fixed to the valve seat, at least a portion of the valve seat is located in the first flow channel cavity, and at least a portion of the valve seat is located in the second flow channel cavity; The second connecting part includes a first cylindrical part having a first cylindrical cavity, at least a portion of the valve core being located in the first cylindrical cavity, and at least one of the first connecting part and the valve seat being connected to the first cylindrical part.

6. The control valve according to claim 3, characterized in that: The second flow hole includes a second A channel and a second B channel that are connected, and the second cavity includes the second B channel; The control valve includes a drive component, which includes a rotor portion that is throttle-connected to the valve core and is rotatable around the rotation axis.

7. The control valve according to claim 6, characterized in that: The valve core includes a first plate portion and a tube portion connected to the first plate portion, the second A channel is located in the first plate portion, the second B channel is located in the tube portion, and the tube portion connects the rotor portion and the first plate portion; The tube includes a constriction neck, and the fluid radius of the second B channel located in the constriction neck gradually decreases from the first plate portion toward the rotor portion; The tube portion includes a boss, which is connected to the rotor portion.

8. The control valve according to any one of claims 1-3, characterized in that: The first flow hole includes a first flow A hole group and a first flow B hole group. The first flow A hole group includes a plurality of first flow A holes, which are arranged along a first direction. The first flow B hole group includes a plurality of first flow B holes, which are arranged along a second direction. The first direction and the second direction are coplanar and perpendicular to the second direction.

9. The control valve according to claim 3, 6, or 7, characterized in that: The second flow hole includes a second flow hole group A and a second flow hole group B. The second flow hole group A can be rotated 180° around the rotation axis to obtain a second flow hole group C, and the second flow hole group B can be rotated 180° around the rotation axis to obtain a second flow hole group D. The fluid flow cross-sectional area of ​​the first flow orifice is less than or equal to the fluid flow cross-sectional area of ​​the second flow orifice.

10. The control valve according to any one of claims 1-3, characterized in that: The control valve includes a limiting part, which connects the valve seat and the valve core. The limiting part includes a protrusion and has a limiting groove. At least a portion of the protrusion is located in the limiting groove, and the protrusion is rotatable about the rotation axis. The control valve includes a support, and at least a portion of the support is connected to the valve seat.

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