Valve element assembly and control valve

Abstract

The valve element assembly comprises an element body and a transmission part, the element body and the transmission part are fixedly connected or are an integrated piece, the element body comprises a communicating cavity and a limiting part, and the communicating cavity is communicated with the limiting part; the communication cavity comprises a first concave part and a second concave part, the first concave part and the second concave part extend in the opposite directions in the circumferential direction of the core body, the length of the first concave part is larger than that of the second concave part in the circumferential direction of the core body, and under the condition that the valve element assembly of the control valve rotates at a constant speed, the first concave part and the second concave part are separated from each other. The flow adjusting precision of one opening can be larger than that of the other opening.

Description

Technical Field

[0001] The present application relates to the field of fluid control technology, and in particular to a valve core assembly and a control valve. Background Art

[0002] The control valve is a flow control device in the thermal management system. The control valve generally includes a valve core and a valve body. The valve body is provided with multiple openings. The valve core is driven to rotate by a controller, and the channels opened by the valve core are used to realize the conduction or closure between different openings. In some thermal management systems, in order to better improve energy efficiency or to protect other components, the control valve is sometimes required to have different flow adjustment accuracy. Summary of the invention

[0003] The purpose of the present application is to provide a valve core assembly and a control valve capable of achieving different flow regulation accuracies.

[0004] The present application provides a valve core assembly, which includes a core body and a transmission part, wherein the core body and the transmission part are fixedly connected or are an integral part, the core body includes a sealing part and a limiting part, the limiting part includes a first channel, the core body includes a conducting cavity, the wall forming the conducting cavity includes at least the inner wall of the sealing part, and the conducting cavity is connected to the first channel; the sealing part includes a first recess and a second recess, and along the circumference of the core body, the first recess and the second recess extend in opposite directions, and along the circumference of the core body, the length of the first recess is greater than the length of the second recess.

[0005] By setting the length of the first recess to be greater than the length of the second recess, the flow regulation area for achieving flow regulation through the first recess is larger than the flow regulation area for achieving flow regulation through the second recess. When the valve core assembly of the control valve rotates at a uniform speed, the flow regulation accuracy of one opening can be made greater than the flow regulation accuracy of the other opening.

[0006] The present application also provides a control valve, comprising the valve core assembly, sealing assembly and housing as described above, the housing comprising a valve cavity, a first connecting hole and a second connecting hole, the first connecting hole and the second connecting hole both being connected to the valve cavity, at least part of the valve core assembly and at least part of the sealing assembly being located in the accommodating cavity; the sealing assembly comprising a sealing block, at least part of the sealing block being located between the housing and the valve core assembly, the sealing block being able to abut against the valve core assembly, the sealing block comprising a second channel, the conducting cavity being able to communicate with the second channel.

[0007] By setting the length of the first recess of the valve core assembly to be greater than the length of the second recess, the valve assembly has two flow regulation accuracies while the apertures of the first connecting hole and the second connecting hole remain unchanged, which helps to meet the needs of specific scenarios of the thermal management system. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a structural exploded schematic diagram of the first embodiment of the control valve of the present application without the controller;

[0009] Figure 2 A schematic diagram of the structure of the housing of the control valve of the present application;

[0010] Figure 3 A schematic cross-sectional view of the control valve without the controller for this application;

[0011] Figure 4 A schematic diagram of the three-dimensional structure of an embodiment of the valve core assembly of the present application;

[0012] Figure 5 A schematic diagram of the three-dimensional structure of an embodiment of the valve core assembly of the present application from another perspective;

[0013] Figure 6 A three-dimensional structural schematic diagram of another embodiment of the valve core assembly of the present application;

[0014] Figure 7 for Figure 6 A three-dimensional structural schematic diagram of another viewing angle of an embodiment of the present invention;

[0015] Figure 8 for Figure 6 A three-dimensional structural schematic diagram of another viewing angle of an implementation method of;

[0016] Fig. 9 A cross-sectional schematic diagram of the valve core assembly of the present application;

[0017] Fig.10 A schematic cross-sectional structure diagram of the control valve of the present application from another perspective;

[0018] Fig.11 A schematic diagram of a flow rate regulation curve of an embodiment of a control valve of the present application.

[0019] Reference numerals:

[0020] 1. valve core assembly; 11. core body; 12. transmission part; 111. conduction cavity; 112. limiting part; 113. blocking part; 121. meshing part; 122. transition part; 1221. first limiting part; 1222. boss part; 1223. extension section; 1224. second limiting part; 1225. reinforcing rib; 1111. first recess; 1112. second recess; 1122. first channel;

[0021] 2. Shell; 21. Valve chamber; 22. First communication hole; 23. Second communication hole; 24. Third communication hole; 25. Main body; 26. End cover; 221. Connecting pipe; 251. First connecting pipe; 252. Second connecting pipe;

[0022] 3. Sealing assembly; 31. Sealing block; 32. Elastic member; 33. First sealing member; 301. First sealing assembly; 302. Second sealing assembly; 311 / 312. Second channel; 312. Flange portion;

[0023] 4. Second sealing member; Specific embodiments

[0024] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0025] It should be understood that the words "first", "second" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate a quantity limitation, but indicate the existence of at least one; "several" means two or more quantities, unless otherwise specified. The directional words such as upper, lower, left, right, front, back, inside, outside, top, bottom, etc. mentioned or may be mentioned in the text are defined relative to the structure shown in the corresponding drawings. They are relative concepts, so they may change accordingly according to their different positions and different usage states. Therefore, these or other directional terms should not be interpreted as restrictive terms. "Include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects.

[0026] The valve device of the exemplary embodiment of the present application is described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments and implementations can complement or be combined with each other.

[0027] The first embodiment will be described in detail below with reference to the accompanying drawings.

[0028] like Figure 1 and Figure 2As shown, the control valve includes a valve core assembly 1, a housing 2 and a controller (not shown in the figure), the housing 2 includes a valve cavity 21, a first connecting hole 22 and a second connecting hole 23, the first connecting hole 22 and the second connecting hole 23 are connected to the valve cavity 21, at least part of the valve core assembly 1 is located in the accommodating cavity 21, further, the housing 2 includes a body 25 and an end cover 26, the end cover 26 is located at the end of the body 25, the body 25 and the end cover 26 are fixedly connected or are an integral part, the fixed connection here can be a bolt connection, welding, clamping and other connection methods, which are not specifically limited here, the number of end covers 26 is not specifically limited, and can be one or two, such as Figure 1 In the illustrated embodiment, there is one end cover 26, which is fixedly connected to the body 25 by bolt connection. Further, the first connecting hole 22 and the second connecting hole 23 are located in the body 25, and the first connecting hole 22 and the second connecting hole 23 are respectively located on two opposite side walls of the body 25, and the center lines of the first connecting hole 22 and the second connecting hole 23 coincide. Further, the housing 2 includes a third connecting hole 24, and the third connecting hole 24 can be located in the body 25 or the end cover 26, which is not limited to this. The third connecting hole 24 is connected to the valve cavity 21, as shown in FIG. Figure 1 In the embodiment shown, the third connecting hole 24 is located on the side wall opposite to the main body 25 and the end cover 26, and the center line of the third connecting hole 24 is perpendicular to the center line of the first connecting hole 22 or the second connecting hole 23. Figure 1 The described embodiment is a three-way control valve, which adjusts the relative position of the valve core assembly 1 located in the valve chamber 21 relative to the housing 2 through a controller to achieve changes in the connection relationship or opening size of the three connecting holes (the first connecting hole 22, the second connecting hole 23 and the third connecting hole 24), thereby achieving the regulation of the flow path and flow rate.

[0029] like Figure 1 and Figure 3 Further, the control valve includes a sealing assembly 3, at least part of which is located in the valve cavity 21, along the extension direction of the center line of the first connecting hole 22 or the second connecting hole 23, one end of the sealing assembly 3 can abut against the valve core assembly 1, and the other end can abut against the inner wall of the body part 25; specifically, the sealing assembly 3 includes a sealing block 31 and an elastic member 32, the elastic member 32 is sleeved on the outer periphery of the sealing block 31, along the deformation direction of the elastic member 32, one end of the elastic member 32 abuts against the body part 25, and the other end abuts against the sealing block 31, the elastic member 32 can push the sealing block 31 to move toward one side of the valve core assembly 1 or has a tendency to move, thereby helping to achieve the sealing between the sealing block 31 and the valve core assembly 1. The sealing block 31 includes a second channel 311 / 312, the second channel 311 / 312 runs through the two opposite end faces of the sealing block 31, and the center line of the second channel 311 / 312 coincides with the center line of the first connecting hole 22 or the second connecting hole 23.

[0030] like Figure 3 Further, the main body 25 includes a first connecting pipe 251 and a second connecting pipe 252. The lumen of the first connecting pipe 251 is connected to the first connecting hole 22. It can also be said that the lumen of the first connecting pipe 251 is connected to the valve cavity 21 through the first connecting hole 22. It can also be understood that the first connecting hole 22 is an opening on one side of the first connecting pipe 251. The lumen of the second manifold 252 is connected to the second connecting hole 23. It can also be said that the lumen of the second connecting pipe 252 is connected to the valve cavity 21 through the second connecting hole 23. It can also be understood that the second connecting hole 23 One side of the second connecting pipe 252 is open; the sealing assembly 3 includes a first sealing member 33, and the first sealing member 33 is limited to be located between the sealing block 31 and the first connecting pipe 251 / the second connecting pipe 252. Specifically, at least part of the sealing block 31 is located in the first connecting pipe 251 or the second connecting pipe 252, and one side of the first sealing member 33 abuts against the inner wall surface of the first connecting pipe 251 / the second connecting pipe 252, and the other side abuts against the outer wall surface of the sealing block 31, so as to realize the sealing between the first connecting pipe 251 / the second connecting pipe 252 and the sealing block 31.

[0031] like Figure 3 and Figure 4 Furthermore, the valve core assembly 1 includes a core body 11 and a transmission part 12, and the core body 11 and the transmission part 12 are fixedly connected or are an integral part. The fixed connection here includes threaded connection, bolt connection, clamping, welding, bonding and other connection methods, which are not specifically limited. The transmission part 12 can be connected to the output end of the controller, and the controller drives the core body 11 to rotate through the transmission part 12, thereby realizing a change in the connection mode or flow distribution of the control valve. Specifically, the transmission part 12 includes a meshing part 121 and a transition part 122, the meshing part 121 is transmission-connected to the output end of the controller, the transition part 122 is connected to the core body 11, the transition part 122 includes a first limiting part 1221 and a boss part 1222, the outer diameter of the first limiting part 1221 is smaller than the outer diameter of the boss part 1222, so that the first limiting part 1221 and the boss part 1222 form a step part, and the control valve includes a second sealing member 4, the second sealing member 4 is located at the step part, or it can be said that the second sealing member 4 is sleeved on the outer peripheral side of the first limiting part 1221, along the radial direction of the first limiting part 1221, the second sealing member 4 is located between the first limiting part 1221 and the end cover 26, one side of the second sealing member 4 abuts the first limiting part 1221, and the other side abuts the end cover 26, in some embodiments, the second sealing member 4 is an X-type sealing ring, of course, it can also be an O-type sealing ring, which is not limited to this.

[0032] like Figure 3 and Figure 4Further, the transition portion 122 also includes an extension section 1223, one end of the extension section 1223 is connected to the core body 11, and the other end is connected to the boss portion 1222. Correspondingly, the sealing block 31 includes a flange portion 312, and the flange portion 312 protrudes outward along the radial direction of the sealing block 31. The flange portion 312 can be a circle of protrusions along the circumference of the sealing block 31, or a plurality of protrusions distributed along the circumference of the sealing block 31. Along the deformation direction of the elastic member 32, the flange portion 312 abuts against the elastic member 32. Further, along the radial direction of the extension section 1223, the flange portion 312 is located on the outside of the extension section 1223, and along the axial direction of the valve core assembly 1, at least part of the flange portion 312 is located between the boss portion 1222 and the core body 11. Furthermore, the boss portion 1222 includes a second limiting portion 1224, which protrudes from the boss portion 1222. The second limiting portion 1224 can limit the movement of the sealing block 31 in the radial direction. Specifically, the end cover 26 is arranged on the open portion of the main body portion 25, and the end cover 26 can limit the movement of the valve core assembly 1 in the axial direction. The end cover 26 realizes the radial movement of the sealing block 31 through the valve core assembly 1. It can also be said that the end cover 26 realizes the radial limitation of the sealing block 31 through the second limiting portion 1224 or the boss portion 1222 of the valve core assembly 1.

[0033] In some existing valve core assemblies 1, the boss portion 1222 and the extension section 1223 are not provided, and the first limiting portion 1221 is directly connected to the core body 11. In order to better radially limit the sealing block 31, the valve core assembly 1 of the present application is provided with a boss portion 1222 and an extension section 1223 between the first limiting portion 1221 and the core body 11. In this way, the axial length of the valve core assembly 1 is increased while the size of the core body 11 remains unchanged, and it can also be said that the length of the transition portion 122 is increased. If the length of the transition portion 122 is too large, it is easy to cause the transition portion 122 to break and fail. In some embodiments of the present application, the strength of the valve core assembly 1 is improved by expanding the radial dimension of the first limiting portion 1221; further, a reinforcing rib 1225 is provided on the inner side of the first limiting portion 1221 to improve the strength of the first limiting portion 1221.

[0034] like Figure 3 and Figure 4The core body 11 includes a blocking portion 113 and a limiting portion 112, the valve core 11 includes a conducting cavity 111, the limiting portion 112 includes a first channel 1122, the conducting cavity 111 and the first channel 1122 are connected, and the wall forming the conducting cavity 111 includes at least a part of the wall of the blocking portion 113. Specifically, the conducting cavity 111 includes an opening, and the opening direction of the conducting cavity 111 and the opening direction of the limiting portion 112 form an angle, the opening of the conducting cavity 111 faces the side wall surface of the shell 2, and the opening of the limiting portion 112 faces the end wall surface of the shell 2. Further, the conducting cavity 111 can be connected to the second channel 311 of the sealing block 31, or the conducting cavity 111 can be connected to the first connecting hole 22 or the second connecting hole 23, the limiting portion 112 can be connected to the third connecting hole 24, or at least part of the limiting portion 112 is located in the third connecting hole 24. Specifically, as Figure 2 In one embodiment, the control valve includes two sealing assemblies 3, at least parts of the two sealing assemblies 3 are respectively located between the valve core assembly 1 and the main body 25, the two sealing assemblies 3 include a first sealing assembly 301 and a second sealing assembly 302, at least part of the first sealing assembly 301 is located in the first connecting hole 22, at least part of the second sealing assembly 302 is located in the second connecting hole 23, the first sealing assembly 301 and the second sealing assembly 302 both abut against the outer wall of the core body 11, and form an annular seal at the abutment. Driven by the driver, the valve core assembly 1 can rotate around its axis, and the conducting chamber 111 can be connected to at least one of the first connecting hole 22 and the second connecting hole 23, that is, the conducting chamber 111 is connected to the first connecting hole 22, or the conducting chamber 111 is connected to the second connecting hole 23, or the conducting chamber 111 is connected to both the first connecting hole 22 and the second connecting hole 23, so that the fluid flowing in through the first channel 1122 can flow into the first connecting hole 22 and / or the second connecting hole 23 through the conducting chamber 111, and by adjusting the opening area (or flow area) of the conducting chamber 111 toward the first connecting hole 22 and the second connecting hole 23, the flow rate of the fluid flowing to the first connecting hole 22 and the second connecting hole 23 is changed, thereby realizing the adjustment of the fluid flow ratio.

[0035] like Figure 4 , Figure 5 and Figure 6 , Figure 8Furthermore, the extending surface of the sealing portion 113 is an arc surface, and the sealing portion 113 includes a first recess 1111 and a second recess 1112, and the first recess 1111 and the second recess 1112 are located on both sides of the central axis of the valve core assembly 1, wherein the first recess 1111 includes a first side portion 1111a and a second side portion 1111b, and the first side portion 1111a and the second side portion 1111b are connected, and one end where the first side portion 1111a and the second side portion 1111b are connected is defined as a first connection point A, and the arc surface where the other ends of the first side portion 1111a and the second side portion 1111b are located is a first opening point B, and the distance between the first side portion 1111a and the second side portion 1111b along the axial direction of the valve core assembly 1 is a first distance D, and the first distance D gradually increases from the first connection point A to the first opening point B. The specific design of the first recess 1111 helps to achieve linear or nearly linear regulation of the flow rate during the rotation of the valve core assembly, so that the flow outlet corresponding to the first connecting hole 22 of the control valve can achieve the following: Fig.11 The change of the AB segment in the flow regulation curve shown in FIG. Figure 4 and Figure 5 In the embodiment, the law of increasing the value of the first distance D from the first connection point A to the first opening point B conforms to a nonlinear change, which can also be understood as the outer contour of the first side portion 1111a is an arc segment convex toward the second side portion 1111b, and the outer contour of the second side portion 1111b is an arc segment convex toward the first side portion 1111a. In another embodiment, as Figure 8 As described above, the first recessed portion 1111 is substantially V-shaped, that is, the first side portion 1111 a and the second side portion 1111 b extend substantially along a straight line.

[0036] Accordingly, if Figure 5 , Figure 6 and Figure 7 The second recess 1112 includes a third side portion 1112a and a fourth side portion 1112b, and the third side portion 1112a and the fourth side portion 1112b are connected. One end where the third side portion 1112a and the fourth side portion 1112b are connected is defined as the second connection point A', and the arc surface where the other ends of the third side portion 1112a and the fourth side portion 1112b are located is the second opening point B'. The distance between the third side portion 1112a and the fourth side portion 1112b along the axial direction of the valve core assembly 1 is the second distance D', and the second distance D' gradually increases from the second connection point A' to the second opening point B'. Through the specific design of the second recess 1112, during the rotation of the valve core assembly, it is helpful to achieve linear regulation or close to linear regulation of the flow rate, so that the flow outlet corresponding to the second connecting hole 23 of the control valve can be achieved as follows Fig.11 The changes in the DE segment of the flow regulation curve shown in FIG. Figure 5In the embodiment, the law of the second distance D' increasing from the second connection point A' to the second opening point B' conforms to the nonlinear change, which can also be understood as the outer contour of the third side portion 1112a is an arc segment convex toward the fourth side portion 1112b, and the outer contour of the fourth side portion 1112b is an arc segment convex toward the third side portion 1112a. In another embodiment, Figure 7 As shown, the outer contour of the third side portion 1112a is an arc segment recessed away from the fourth side portion 1112b, and the outer contour of the fourth side portion 1112b is an arc segment recessed away from the third side portion 1112a, that is, the second recess 1112 is generally semicircular or bracket-shaped.

[0037] like Figure 8 In the embodiment, the increasing speed of the first distance D from the first connection A to the first opening B is smaller than the increasing speed of the second distance D' from the second connection A' to the second opening B'. Such a setting can make the flow area formed by the first recess 1111 larger than the flow area formed by the second recess 1112. Therefore, when the core 11 rotates at a uniform speed, the time required to close the flow channel through the first recess 1111 is longer than the time required to close the flow channel through the second recess 1112. In other words, the adjustment accuracy of the first recess 1111 is higher.

[0038] like Fig. 9, along the circumference of the core body 11, the first recess 1111 and the second recess 1112 extend in opposite directions, the length of the first recess 1111 is greater than the length of the second recess 1112, the circumferential area of ​​the core body 11 corresponding to the first recess 1111 is defined as the first flow regulation area Q1, and the circumferential area of ​​the core body 11 corresponding to the second recess 1112 is defined as the second flow regulation area Q2, wherein, along the circumference of the core body 11, the central angle φ1 corresponding to the first flow regulation area Q1 is greater than the central angle φ2 corresponding to the second flow regulation area Q2, wherein 60°≤φ1≤90°, 30°≤φ2≤47°, further, φ1=79°, φ2=39°, by setting the first flow regulation area Q1 to be greater than the second flow regulation area Q2, When the apertures of the first connecting hole 22 and the second connecting hole 23 are consistent or the flow areas of the two second channels 311 are consistent, the flow adjustment range on the side of the first connecting hole 22 is greater than the flow adjustment range on the side of the second connecting hole 23. When the core 11 of the valve core assembly 1 rotates in a certain range, the flow on the side of the second connecting hole 23 reaches a maximum, and at the same time, the flow on the side of the first connecting hole 22 gradually decreases. In the thermal management system, it helps to control the valve so that when the connecting hole on one side is fully open, the connecting hole on the other side still has a smaller flow area. As the core 11 continues to rotate, the connecting hole on the other side gradually closes. Such a setting helps when the flow on one side reaches a maximum, the opening on the other side is not completely closed but gradually closed, achieving a buffering effect on the refrigeration system. By setting the first flow adjustment area Q1 to be larger than the second flow adjustment area Q2, it can be achieved as follows Figure 8 In the flow regulation curve shown, the rotation angle range of the core 11 corresponding to the AB segment is larger than the rotation angle range of the core 11 corresponding to the DE segment. Compared with the first flow regulation area Q1 and the second flow regulation area Q2 being the same, the control valve has a larger adjustment angle range for the fluid flowing through one side of the first connecting hole 22, that is, the flow regulation accuracy of the first flow regulation area Q1 is greater than that of the second flow regulation area Q2. At the same time, this design makes the flow resistance at the outlets on both sides of the control valve different. When the control valve is applied to a thermal management circuit, the connection method of the control valve can be configured according to the different flow resistances in the flow paths on both sides. Fig.10 In the embodiment shown, the flow rate regulation range that the control valve can achieve for the fluid flowing through one side of the first connecting hole 22 accounts for about 61% of the control valve rotation angle range, which is larger than the regulation range of about 50% when the two flow rate regulation areas are the same in the prior art.

[0039] like Figure 7The core body 11 includes a blocking portion 113, an extended surface of the blocking portion 113 is an arc surface, and the blocking portion 113 is a part of the arc surface. A plane perpendicular to the central axis of the core body 11 and passing through the first connection A or the second connection A' is defined as a reference plane, and a central angle of the blocking portion 113 on the reference plane is φ3, φ3 is not greater than 100 degrees, and further, φ3<90°, and in some embodiments φ3=80°, and an angle between a center line of the first connecting hole 22 and a center line of the second connecting hole 23 is defined as φ4, and a minimum central angle of the opening of the conducting cavity 111 in a plane perpendicular to the central axis of the valve core assembly 1 is φ5, wherein φ5>φ4, and in some embodiments φ4=180°, φ5 is greater than 150 degrees, and specifically, φ5=162 degrees. This solution reduces the proportion of the blocking portion 113 occupying the circumference of the core body 11, thereby increasing the proportion of the opening of the conduction cavity 111 occupying the circumference of the core body 11, thereby increasing the flow rate adjustment range of the control valve.

[0040] like Figure 7 , define the arc surface where the sealing part 113 is located as the reference arc surface, and along the circumference of the core body 11, the length of the projection of the second channel 311 on the reference arc surface is not greater than the minimum length of the sealing part 113. It can also be said that the valve closing area corresponding to the sealing part 113 is not less than the inner diameter of the second channel 311 of the sealing block 31, so that the sealing block 31 can abut and seal with the sealing part 113, so that the core body 11 can block the connecting hole on one side.

[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. Although the present invention has been described in detail in this specification with reference to the above embodiments, it should be understood by those skilled in the art that the present invention can still be modified or replaced by equivalents, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A valve core assembly, characterized in that: The valve core assembly comprises a core body (11) and a transmission part (12); the core body (11) and the transmission part (12) are fixedly connected or are an integral part; the core body (11) comprises a blocking part (113) and a limiting part (112); the limiting part (112) comprises a first channel (1122); the core body (11) comprises a conducting cavity (111); a wall of the conducting cavity (111) comprises at least a part of a wall of the blocking part (113); and the conducting cavity (111) and the first channel (1122) are in communication; The blocking portion (113) comprises a first recess (1111) and a second recess (1112); along the circumference of the core body (11), the first recess (1111) and the second recess (1112) extend in opposite directions; along the circumference of the core body (11), the length of the first recess (1111) is greater than the length of the second recess (1112).

2. The valve core assembly according to claim 1, characterized in that: The first recessed portion (1111) includes a first side portion (1111a) and a second side portion (1111b), the first side portion (1111a) is connected to the second side portion (1111b), one end where the first side portion (1111a) and the second side portion (1111b) are connected is defined as a first connection point A, the arc surface where the other end of the first side portion (1111a) and the other end of the second side portion (1111b) are located is defined as a first opening point B, the distance between the first side portion (1111a) and the second side portion (1111b) along the axial direction of the valve core assembly is a first distance D, and the first distance D gradually increases from the first connection point A to the first opening point B; The second recess (1112) includes a third side portion (1112a) and a fourth side portion (1112b), and the third side portion (1112a) and the fourth side portion (1112b) are connected. One end where the third side portion (1112a) and the fourth side portion (1112b) are connected is defined as a second connection point A', and the arc surface where the other ends of the third side portion (1112a) and the fourth side portion (1112b) are located is defined as a second opening point B'. The distance between the third side portion (1112a) and the fourth side portion (1112b) along the axial direction of the valve core assembly is a second distance D', and the second distance D' gradually increases from the second connection point A' to the second opening point B'.

3. The valve core assembly according to claim 2, characterized in that: An increasing speed of the first distance D from the first connection point A to the first opening point B is smaller than an increasing speed of the second distance D′ from the second connection point A′ to the second opening point B′.

4. The valve core assembly according to any one of claims 1 to 3, characterized in that: The first side portion (1111a) and the second side portion (1111b) extend in a straight line or the first side portion (1111a) protrudes toward the second side portion (1111b), the second side portion (1111b) protrudes toward the first side portion (1111a), the third side portion (1112a) is recessed away from the fourth side portion (1112b), and the fourth side portion (1112b) is recessed away from the third side portion (1112a).

5. The valve core assembly according to any one of claims 1 to 5, characterized in that: The circumferential area of ​​the core body (11) corresponding to the first recess (1111) is defined as the first flow regulation area Q1, the circumferential area of ​​the core body (11) corresponding to the second recess (1112) is defined as the second flow regulation area Q2, and the plane perpendicular to the central axis of the core body (11) and passing through the first connection A or the second connection A' is defined as the reference plane, wherein, on the reference plane, the central angle φ1 corresponding to the first flow regulation area Q1 is greater than the central angle φ2 corresponding to the second flow regulation area Q2.

6. The valve core assembly according to claim 5, characterized in that: A plane perpendicular to the central axis of the core (11) and passing through the first connection point A or the second connection point A' is defined as a reference plane, and a central angle of the blocking portion (113) on the reference plane is φ3, which is not greater than 100 degrees.

7. The valve core assembly according to claim 6, characterized in that: The minimum central angle of the opening of the conduction cavity (111) in a plane perpendicular to the central axis of the valve core assembly (1) is defined as φ5, and φ5 is greater than 150 degrees; The central angle φ1 corresponding to the first flow regulating area Q1 satisfies: 60°≤φ1≤90°; The central angle φ2 corresponding to the second flow regulating area Q2 satisfies: 30°≤φ2≤47°.

8. A control valve, characterized in that: The invention comprises the valve core assembly (1), the sealing assembly (3) and the housing (2) according to any one of claims 1 to 7, wherein the housing (2) comprises a valve cavity (21), a first communicating hole (22) and a second communicating hole (23), wherein the first communicating hole (22) and the second communicating hole (23) are both capable of communicating with the valve cavity (21), and at least part of the valve core assembly (1) and at least part of the sealing assembly (3) are located in the accommodating cavity (21); The sealing assembly (3) comprises a sealing block (31), at least a portion of the sealing block (31) is located between the housing (2) and the valve core assembly (1), the sealing block (31) is capable of abutting against the valve core assembly (1), the sealing block (31) comprises a second channel (311), and the conducting cavity (111) is capable of communicating with the second channel (311).

9. The control valve according to claim 8, characterized in that The angle between the center line of the first connecting hole (22) and the center line of the second connecting hole (23) is defined as φ4, and the minimum center angle of the conducting cavity (111) in a plane perpendicular to the center axis of the valve core assembly (1) is φ5, where φ5>φ4.

10. The control valve according to claim 8 or 9, characterized in that: The arc surface where the blocking portion (113) is located is defined as a reference arc surface, and along the circumference of the core (11), the length of the projection of the second channel (311) on the reference arc surface is not greater than the minimum length of the blocking portion (113).

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