A control valve

Abstract

This invention discloses a control valve, which includes a valve body component, a valve core component, and a sealing component. The valve body component includes a side wall portion, and the sealing component includes an elastic gasket and a sealing element. The sealing element includes a sealing main body portion, which includes a connected flange portion and a mating portion. The mating portion contacts and slides with the valve core component. The elastic gasket has a first through hole that communicates with a connecting hole. The sealing element has a second through hole that communicates with the first through hole and the connecting hole. The flange portion includes an outwardly turned portion surrounding the second through hole and connected to the elastic gasket. The outwardly turned portion is located between the inner surface of the mating portion that contacts the valve core component and the outer surface of the elastic gasket that contacts the side wall portion. This design enables better sealing performance of the control valve.

Description

[0001] This application claims priority to Chinese Patent Application No. 202110065261.1, filed on January 18, 2021, entitled "A Control Valve", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This invention relates to the field of fluid control, and more specifically to a control valve. Background Technology

[0003] Some systems require multi-channel control valves to control flow paths, such as motor vehicles. Currently, multiple control valves are typically used for control. In a multi-channel control valve, how to configure the control valves to achieve better sealing is an urgent problem to be solved. Summary of the Invention

[0004] To provide a control valve, the present invention provides the following technical solution:

[0005] A control valve includes a valve body component and a valve core component. The control valve has a valve cavity, at least a portion of which is located within the valve cavity. The valve core component is rotatable. The valve body component includes a side wall portion, which is a peripheral wall of the valve cavity or at least a portion thereof. The side wall portion has at least three communicating holes communicating with the valve cavity. The control valve further includes a sealing component located between the side wall portion and the valve core component. The sealing component includes an elastic gasket and a sealing element, which are fixedly connected as a single unit. Between the seal and the sidewall portion, the seal includes a sealing body portion, the sealing body portion includes a connected flange portion and a mating portion, the mating portion contacts and slides with the valve core component, the elastic pad has a first through hole communicating with the connecting hole, the seal has a second through hole communicating with the first through hole and the connecting hole, the flange portion includes an outwardly flanged portion surrounding the second through hole and connected to the elastic pad, the outwardly flanged portion being located between the inner surface of the mating portion that contacts the valve core component and the outer surface of the elastic pad that contacts the sidewall portion.

[0006] According to the control valve provided in the embodiments of the present invention, the sealing component of the control valve includes an elastic gasket and a sealing element that are integrally structured. The elastic gasket and the sealing element have good sealing performance. The sealing element contacts the valve core component. By providing a sealing main body including an interconnected flange portion and a mating portion, the flange portion includes an outwardly flanged portion surrounding the second through hole and connected to the elastic gasket. The outwardly flanged portion is located between the inner surface of the mating portion and the outer surface of the elastic gasket. On the one hand, this increases the contact area between the elastic gasket and the sealing element, which can improve the adhesion between the elastic gasket and the sealing element. On the other hand, it can improve the situation where the valve core component collides with the edge of the outwardly flanged portion when it rotates to the area where the second through hole is located, thereby preventing the risk of jamming, increased driving force, or fluid leakage. Attached Figure Description

[0007] Figure 1 This is an exploded structural diagram of a partial structure of a control valve according to this application;

[0008] Figure 2 This is a three-dimensional structural schematic diagram of a sealing component according to one embodiment of this application;

[0009] Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure of the sealing component is shown;

[0010] Figure 4 This is a three-dimensional structural schematic diagram of a partial structure of a valve body component according to one embodiment of this application;

[0011] Figure 5 This is a schematic diagram of a combined structure of a sealing component and a valve body component according to this application;

[0012] Figure 6 yes Figure 3 A magnified schematic diagram of the local structure at point Q1;

[0013] Figure 7 This is a schematic diagram of a combined structure of a sealing component and a valve core component provided in this application;

[0014] Figure 8 This is a schematic diagram of another combined structure of a sealing component and a valve core component provided in this application;

[0015] Figure 9 yes Figure 5 A magnified schematic diagram of the local structure at point Q2;

[0016] Figure 10 This is an exploded structural diagram of a partial structure of another control valve according to this application;

[0017] Figure 11 yes Figure 10 A three-dimensional structural schematic diagram of the sealing component is shown in the figure;

[0018] Figure 12 yes Figure 10 A three-dimensional structural schematic diagram of the valve body component is shown in the figure;

[0019] Figure 13 yes Figure 12 A partial cross-sectional structural schematic diagram of the valve body component;

[0020] Figure 14 yes Figure 13 A magnified schematic diagram of the local structure at point I;

[0021] Figure 15 yes Figure 11 A schematic diagram of a partial cross-sectional structure of the sealing component;

[0022] Figure 16 This is a three-dimensional structural schematic diagram of a sealing component according to another embodiment of this application;

[0023] Figure 17 yes Figure 16 A three-dimensional structural diagram of the valve body component;

[0024] Figure 18 This is a three-dimensional structural diagram of the cover of the control valve in this application. 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, the control valve 200 includes a valve body component 10, a valve core component 20, and a sealing component 40. The control valve 200 has a valve cavity 102 and may also include a control box. The valve core component 20 can rotate under the drive of a drive component in the drive box, such as a motor or a motor and a reduction gear set. The valve body component 10 includes a side wall portion 12 and a cover (not shown in the figure), which are fixedly connected. The side wall portion 12 is the peripheral wall of the valve cavity 10 or at least a part of the peripheral wall. The valve body component 10 has at least three connecting holes 101. At least a portion of the connecting holes 101 are arranged circumferentially along the side wall portion 12. The number of connecting holes 101 can be multiple. For example, in this embodiment, the number of connecting holes 101 can be eight. Two rows of connecting holes 101 are provided along the axial direction of the side wall portion 12, with each row of connecting holes 101 arranged circumferentially along the side wall portion 12. In some optional embodiments, the number of connecting holes 101 can be greater than or less than eight. The sealing component 40 is located between the side wall portion 12 and the valve core component 20. The sealing component 40, the valve core component 20, and the side wall portion 12 can be coaxially arranged. The sealing component 40 has an opening 401 that extends through the sealing component 40 along its height direction and penetrates both the inner and outer surfaces of the sealing component 40. The sealing component 40 includes an elastic pad 41 and a sealing element 42. The elastic pad 41 and the sealing element 42 are fixedly connected as an integral structure. The elastic pad 41 is located between the sealing element 42 and the side wall portion 12 of the valve body component 10. The sealing element 42 is in contact with the valve core component 20.

[0027] In some embodiments, the elastic pad 41 is made of rubber, the valve body component 10 is made of aluminum or plastic material through injection molding, the valve core component 20 is made of plastic material through injection molding, and the seal 42 is made of Teflon. The elastic pad 41 and the seal 42 are bonded together to form an integral structure. The surface roughness of the elastic pad 41 facing away from the valve core component 20 is greater than the surface roughness of the seal 42 facing the valve core component 20. Therefore, the surface of the seal 42 in contact with the valve core component 20 is smoother than the surface of the elastic pad 41 in contact with the side wall portion 12. By using Teflon as the material for the seal 42, it not only provides a sealing function but also has certain lubricating properties, reducing the friction between the valve core component 20 and the seal 40, thereby relatively reducing the driving force of the control valve 200.

[0028] like Figures 3 to 5As shown, the elastic pad 41 has a first through hole 411, and the seal 42 has a second through hole 421. The valve chamber 102 of the control valve 200 communicates with the communicating hole 101 of the valve body component 10 through the second through hole 421 and the first through hole 411. The seal 42 includes a sealing body portion, the second through hole 421 is located in the sealing body portion, the sealing body portion contacts the valve core component 20, the sealing body portion includes a mating portion, the mating portion contacts the valve core component 20, the inner surface of the mating portion is an arc surface S1, the arc surface S1 contacts the valve core component 20, and the side wall portion 12 includes a first part 1 that is interconnected. 21 and the second part 122, both the first part 121 and the second part 122 extend circumferentially along the sidewall portion 12, the first part 121 and the second part 122 are connected to form the sidewall portion 12, the connecting hole 101 is located in the first part 121, the two circumferentially adjacent edges of the first part 121 at least partially overlap with the edges of the two outermost connecting holes 101 arranged circumferentially, the two circumferentially adjacent edges of the second part 122 form the hole walls of the two outermost connecting holes 101 arranged circumferentially, at this time the sealing member 40 is located between the first part 121 and the valve core member 20, such as Figure 5 Two connecting holes 101 arranged on both sides of the sidewall portion 12 are defined as the first connecting hole 101a and the second connecting hole 101b, respectively. The first connecting hole 101a and the second connecting hole 101b are two connecting holes adjacent to the two sides of the second part 122. On the cross-section perpendicular to the axial direction of the sidewall portion 12, the maximum central angle formed by the edge of the first connecting hole 101a, the edge of the second connecting hole 101b, and the center of the sidewall portion 12 is defined as α, the central angle corresponding to the mating part is defined as β, and the rotational tolerance angle of the valve core component 20 is θ. Then β≥α+2θ. Optionally, the rotational tolerance angle of the valve core component 20 is ±θ, then α+2θ≤β≤α+4θ. Through the above settings, the sealing component 40 can achieve sealing of the control valve 200 within the rotational tolerance range of the valve core component 20. This prevents the valve core component 20 from disengaging from the sealing component 40 when the β angle is too small, thus affecting the sealing performance. Simultaneously, it prevents the expansion space of the sealing component 40 from being affected when the β angle is too large, thereby improving the sealing performance of the control valve 200. It is understood that the central angle β corresponding to the arc surface S1 of the sealing component 40 can also be greater than α+4θ, as long as the sealing performance is achieved.

[0029] In some embodiments, the rotational tolerance angle of the valve core component 20 can be ±5 degrees. That is, when the drive stops driving the valve core component 20 to rotate, due to the control accuracy of the drive, the delay in signal transmission, or the influence of the rotational inertia of the valve core component 20, the valve core component 20 may stop rotating 5 degrees before the set angle or continue rotating 5 degrees after exceeding the set angle, thereby causing a rotational tolerance in the valve core component 20. In order to ensure that the sealing component 40 can contact the valve core component 20 in all stroke ranges of the valve core component 20's rotation, and to give the sealing component 40 better sealing performance, in the embodiments of the present invention, such as Figure 1 and Figure 5 Four connecting holes 101 are arranged circumferentially along the side wall portion 12. The maximum central angle α formed by the edge of the first connecting hole, the edge of the second connecting hole and the center of the side wall portion 12 is greater than or equal to 260 degrees and less than or equal to 270 degrees. The central angle β corresponding to the arc surface S1 is greater than or equal to 270 degrees and less than or equal to 280 degrees.

[0030] like Figure 1 , Figure 3 , Figures 6 to 8 In some embodiments, the sealing body includes a flange and a mating portion 423. The mating portion 423 contacts and slides with the valve core component 20. The elastic pad 41 has a first through hole 411 communicating with the connecting hole 101. The sealing body has a second through hole 421. The flange surrounds the second through hole 421, which communicates with the first through hole 411 and the connecting hole 101. At least a portion of the flange is located outside the receiving space formed by the sealing body. The flange includes... The outwardly turned portion 424 and the connecting portion 425 are located on the outer periphery of the second through hole 421 and connected to the elastic pad 41. The connecting portion 425 connects the outwardly turned portion 424 and the mating portion 423. The outwardly turned portion 424 is located between the inner surface of the mating portion 423 that contacts the valve core component 20 and the outer surface of the elastic pad 41 that contacts the side wall portion 12. The accommodating space formed by the sealing body portion refers to the circumferential area where the arc surface S1 of the sealing body portion, which is coaxial with the axis of the side wall portion 12, is located. Figure 8 The circular area with radius r2 is shown by the dashed line. This arrangement increases the contact area between the elastic pad 41 and the seal 42, improving their adhesion. It also reduces the risk of the valve core component 20 colliding with the edge of the second through hole 421 when rotating to the area where the second through hole 421 is located, thus preventing stalling, increased driving force, or fluid leakage.

[0031] like Figure 6 and Figure 7The diagram illustrates the structure of a sealing component 40 according to an embodiment of the present invention. In this embodiment, the flange protrudes from the mating portion 423 and extends toward the elastic pad 41. At least a portion of the outwardly turned portion 424 extends radially along the side wall portion 12, and at least a portion of the outwardly turned portion 424 extends into the first through hole 411 and is bonded and fixed to the inner wall of the first through hole 411. That is, one end of the outwardly turned portion 424 is connected to the mating portion 423 through the connecting portion 425, and the other end is located inside the first through hole 411. The height of the outwardly turned portion 424 extending into the first through hole 411 is defined as a, and the height of the first through hole 411 is b. Along the thickness direction of the sealing component 40, that is, along the radial direction of the sealing component 40, the height a of the outwardly turned portion 424 extending into the first through hole 411 is less than the height b of the first through hole 411. With the above-mentioned configuration, the elastic pad 41 can prevent the seal 42 from contacting the side wall portion 12 when compressed, so that the elastic pad 41 has more compression space. Furthermore, by providing a flange portion on the seal 42, on the one hand, the contact area between the elastic pad 41 and the seal 42 is increased, which can improve the adhesion between the elastic pad 41 and the seal 42. On the other hand, by extending the outward flange portion 424 into the first through hole 411, it can limit the seal 42 and the elastic pad 41, preventing the seal 42 and the elastic pad 41 from being misaligned when the valve core component 20 rotates.

[0032] To ensure a good sealing effect for the sealing component 40, the valve core component 20 needs to compress the sealing component 40 to deform the elastic pad 41, thereby achieving a good seal between the elastic pad 41 and the side wall portion 12, and between the sealing component 42 and the valve core component 20. Optionally, after the control valve 200 is assembled, the compression deformation of the elastic pad 41 can be 12% to 25%, meaning the thickness of the compressed elastic pad 41 is 75% to 88% of its thickness in its natural state. Based on this, to prevent the sealing component 42 from contacting the side wall portion 12 during compression of the elastic pad 41, the height a of the outwardly turned portion 424 extending into the first through hole 411 and the height b of the first through hole 411 along the thickness direction of the sealing component 40 satisfy: a ≤ 0.75b, meaning that the height of the outwardly turned portion 424 protruding from the mating portion 423 is less than or equal to 0.75 times the thickness of the elastic pad 41.

[0033] like Figure 8The diagram illustrates the structure of another sealing element according to an embodiment of the present invention. In this embodiment, the first through hole 411 includes an inner wall extending radially along the side wall portion 12. The outwardly turned portion 424 is located between the inner surface of the mating portion 423 and the end of the inner wall facing the valve core component 20. The first surface of the outwardly turned portion 424 facing the valve core component 20 and the second surface of the mating portion facing the valve core component 20 have an included angle. At this time, the flange portion 421 can not extend into the first through hole 411 of the elastic pad 41, and the first surface of the outwardly turned portion 424 forms a slope, which can play a certain guiding role for the valve core component 20 during rotation.

[0034] When the compression deformation of the elastic pad 41 is 12% to 25%, the sealing component 40 can have good sealing performance, such as... Figure 7 and Figure 8 As shown, the outwardly flared portion 424 includes a first edge 4241 near the elastic pad 41, which faces the valve core component 20. When the valve core component 20 rotates to the area where the first through hole 411 is located, if the edge of the valve core component 20 contacts the first edge 4241 of the outwardly turned portion 424, the first edge 4241 may block the rotation of the valve core component 20, which may lead to the valve core component 20 stalling or increase the rotational torque of the valve core component 20. In order to solve the above problems, in some embodiments, on the cross-section of the control valve 200, which is a cross-section obtained by cutting the control valve 200 along the direction perpendicular to the height of the control valve 200, the radius of the arc between the first edge 4241 and the center of the side wall portion 12 is defined as r1, and the circumferential radius of the valve core component 20 is r2, where r1 > r2. At this time, the valve core component 20 squeezes the sealing component 40, and during the rotation of the valve core component 20, the edge of the valve core component 20 does not contact the first edge 4241 of the outwardly turned portion 4244, preventing the first edge 4241 from blocking the valve core component 20, thereby improving the rotational stability of the valve core component 20.

[0035] In some embodiments, the angle between the surface of the outwardly turned portion 424 facing the valve core component 20 and the surface of the mating portion 423 facing the valve core component 20 is greater than or equal to 90 degrees. In specific implementations, the angle between the surface of the outwardly turned portion 424 facing the valve core component 20 and the surface of the mating portion 423 facing the valve core component 20 can be set according to user requirements. For example, the angle can be 90 degrees, 100 degrees, or 120 degrees. Under the premise of meeting the sealing performance requirements of the sealing component 40, such as under the premise that the valve core component 20 can achieve good sealing within the rotational tolerance range, the angle between the surface of the outwardly turned portion 424 facing the valve core component 20 and the surface of the mating portion 423 facing the valve core component 20 can be set to a relatively large value, simplifying the manufacturing difficulty of the sealing component 40.

[0036] like Figure 6 and Figure 7As shown, the flanged portion of the seal 42 may further include a connecting portion 425, which connects the outwardly flanged portion 424 and the mating portion 423. The connecting portion 425 has a connecting surface 4251 facing the valve core component 20. The connecting surface 4251 is curved, and its diameter gradually increases along the direction close to the outwardly flanged portion 424. Through this arrangement, the connecting portion 425 can provide buffering and guiding functions during the rotation of the valve core component 20, thereby improving the stability of the valve core component 20's rotation.

[0037] like Figure 5 , Figures 7 to 9 As shown, in some embodiments, the seal 42 may further include two limiting portions 422 fixedly connected to the sealing body portion. One limiting portion 422 is located on one side of the sealing body portion in the circumferential direction, and the other limiting portion 422 is located on the other side of the sealing body portion in the circumferential direction. The limiting portion 422 has a first limiting surface 4221 and protrudes from the sealing body portion toward the elastic pad 41, that is, the limiting portion 422 protrudes from the sealing body portion toward the direction away from the valve core component 20. The valve body component 10 also includes a stop portion 13, which is fixedly connected to the side wall portion 12 and located in the valve cavity 102. The stop portion 13 has a second limiting surface 131 along the circumference of the stop portion 13, and the first limiting surface 4221 and the second limiting surface 131 are in contact. With the above arrangement, the first limiting surface 4221 and the second limiting surface 131 can contact within the elastic range of the sealing component 40, restricting the rotation of the sealing component 40 relative to the valve body component 10. Along the thickness direction of the sealing member 40, the height of the limiting part 422 protruding from the mating part 423 is less than or equal to the thickness of the elastic pad 41, so that the elastic pad 41 has more expansion space.

[0038] In some embodiments, the compression deformation of the elastic pad 41 is 12% to 25%; the limiting portion 422 has a transition surface 4222 connecting the arc surface S1 of the mating portion and the first limiting surface 4221. The transition surface 4222 includes a second edge 4223 near the first limiting surface 4221. On the cross-section of the control valve 200, the radius of the arc between the second edge 4223 and the center of the side wall portion 12 is defined as r3, and the circumferential radius of the valve core component 20 is r2, where r3 > r2. Through the above arrangement, the contact between the edge of the valve core component 20 and the second edge 4223 is reduced during the rotation of the valve core component 20, preventing the second edge 4223 from blocking the rotation of the valve core component 20 and causing the valve core component 20 to stall or increase the rotational torque of the valve core component 20, thereby improving the rotational stability of the valve core component 20.

[0039] like Figures 10 to 15As shown, another control valve provided in this embodiment of the invention has a similar structure to the control valve described above. The elastic pad 41 may also have a first groove 412 and a second groove 413. The openings of the first groove 412 and the second groove 413 face the side wall portion 12. The first groove 412 may extend from one end of the elastic pad 41 to the other end in the longitudinal direction of the elastic pad 41. There may be multiple first grooves 412. In this embodiment, the first grooves 412 are distributed on both sides of the first through hole 411, and the first groove 412 located between two adjacent first through holes 411 may be located in the middle part of the portion between two adjacent first through holes 411. The first groove 412 may be axially arranged, and the second groove 413 may be circumferentially arranged or in other forms. The second groove 413 can provide expansion space for the elastic pad 41 when it is compressed. In this embodiment, the second groove 413 is located on at least one side in the longitudinal direction of the elastic pad 41, and the first groove 412 communicates with the second groove 413.

[0040] like Figure 12 As shown, the valve body component 10 has a rib 123 protruding from the side wall portion 12. In this embodiment, the rib 123 protrudes from the side wall portion 12 and is located within the valve cavity 102. The number of ribs 123 corresponds to the number of first grooves 412. The ribs 123 extend into the first grooves 412, and the ribs 123 and the first grooves 412 are press-fitted. By setting the ribs 123 and the first grooves 412, not only can the sealing component 40 be positioned and installed so that the position of the first through hole 411 corresponds to the position of the connecting hole 101 to conduct fluid, but the way the ribs 123 and the first grooves 412 cooperate can also limit the sealing component 40, preventing the sealing component 40 from shifting when the valve core component rotates. In this embodiment, the height of the rib 123 protruding from the side wall portion 12 is less than the depth of the first groove 412, which allows for a certain gap between the rib 123 and the bottom of the first groove 412. This allows the elastic pad 41 to abut against the side wall portion 12, and the gap between the rib 123 and the bottom of the first groove 412 allows for expansion space when the elastic pad undergoes elastic deformation.

[0041] like Figures 12 to 14As shown, the valve body component 10 also includes a bottom wall 11 and a boss portion 124. The bottom wall 11 is integrally formed with the side wall portion 12. The boss portion 124 protrudes from the bottom wall 11 and includes a blocking portion 125 and a first support portion 126. The blocking portion 125 protrudes from the first support portion 126 by a certain distance. At least a portion of the first support portion 126 is located between the rib 123 and the blocking portion 125, forming a limiting space 127 between the blocking portion 125 and the rib 123. After the sealing component 40 is installed into the valve body component 10, one end of the sealing component 40 is accommodated in the limiting space 127. The sealing component 40 has a first notch portion 46, which is located on the end face of the sealing component and extends into the interior of the sealing component 40. The first support portion 126 extends into the first notch portion 46 and abuts against the sealing component 40. By providing the boss portion 124, the end of the sealing component 40 can be limited, preventing the end of the sealing component 40 from separating from the valve body component 10.

[0042] Combination Figures 10 to 13 , Figure 17 as well as Figure 18 The control valve 200 also includes a cover 50. The valve body component 10 has a first valve core support portion 1101 and a second valve core support portion 1102. The first valve core support portion 1101 protrudes from the bottom wall 11, and the second valve core support portion 1102 protrudes from the end face of the cover 50. A portion of the valve core component 20 extends into the first valve core support portion 1101, and another portion of the valve core component 20 extends into the second valve core support portion 1102. The valve core component 20 is rotatably supported on the first valve core support portion 1101 and the second valve core support portion 1102. Both the first valve core support portion 1101 and the second valve core support portion 1102 may include a notch portion and a rib portion. Taking the second valve core support portion 1102 as an example, the second valve core support portion 1102 includes a notch portion 112 and a rib portion 113. By providing the notch portion 112, impurities in the coolant entering the mating part 111 can be discharged in time, preventing the valve core component from jamming. The rib portion 113 can improve the strength of the second valve core support portion 1102 and reduce the impact of the notch portion 112 on the strength of the second valve core support portion 1102. Furthermore, the height of the second valve core support portion 1102 is greater than or equal to the height of the boss portion 124, which reduces the friction of the valve core component. Simultaneously, the boss portion 124 can prevent the sealing component 40 from detaching from the valve body component 10 when deformed under pressure.

[0043] The cover 50 also includes a second support portion 51. One end face of the sealing component 40 in the axial direction is provided with a first notch portion 46, and the other end face of the sealing component 40 in the axial direction is provided with a second notch portion 47. The first support portion 126 extends into the first notch portion 46 and abuts against the sealing component 40, and the second support portion 51 extends into the second notch portion 47 and abuts against the sealing component 40, further limiting the sealing component 40.

[0044] like Figures 16 to 18 This shows a structural schematic diagram of the sealing component and valve body component according to another embodiment of this application; and Figures 10 to 15 The control valves shown have similar structures, the main difference being that the sealing component 40 does not have a first groove 412, and the valve body component 10 does not have a rib 123. Figure 16 and Figure 17 The sealing component 40 is placed in the inner cavity of the valve body component 10. The limiting part 422 of the sealing component 40 contacts the side of the stop part 128. Within the elastic range of the sealing component 40, the limiting part 422 contacts the side of the stop part 128, which can restrict the rotation of the sealing component 40 relative to the valve body component 10.

[0045] In addition, in some embodiments, the first notch 46 and the second notch 47 may be omitted, and the first support 126 and the second support 51 may be omitted accordingly, further simplifying the structure and reducing assembly difficulty.

[0046] In summary, according to the control valve 200 provided in the embodiments of the present invention, the sealing component 40 includes an integrally formed elastic pad 41 and a sealing element 42. The sealing component 40 may have an opening 401, making the sealing component 40 a non-closed structure. This non-closed structure can expand under radial external force, thereby providing a larger expansion space between the valve core component 20 and the sealing component 40 during compression. Compared to a closed annular sealing component, the sealing component 40 provided in the embodiments of the present invention can reduce design and manufacturing difficulties. The arc surface of the sealing element 42 and the valve core portion... The component 20 contacts the side wall portion 12, which includes a first portion 121 extending circumferentially along the side wall portion. The connecting hole 101 is located in the first portion 121. By setting the maximum central angle α formed by the edges of the two connecting holes arranged on both sides of the side wall portion and the center of the side wall portion, the central angle β corresponding to the arc surface S1 of the mating part, and the rotational tolerance angle θ of the valve core component 20 to satisfy: β≥α+2θ, the sealing component 40 can achieve the sealing of the control valve 200 within the rotational tolerance range of the valve core component 20, thereby improving the sealing performance of the control valve 200 and facilitating its widespread application.

[0047] It should be noted that although this specification has described the present invention 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, and 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 component and a valve core component, the control valve having a valve cavity, at least a portion of the valve core component being located in the valve cavity, the valve core component being rotatable by an actuation, the valve body component including a side wall portion, the side wall portion being a peripheral wall of the valve cavity or at least a portion thereof, the side wall portion having at least three communicating holes communicating with the valve cavity, characterized in that, The control valve further includes a sealing component located between the side wall portion and the valve core portion. The sealing component includes an elastic gasket and a sealing element, which are fixedly connected as an integral structure. The elastic gasket is located between the sealing element and the side wall portion. The sealing element includes a sealing body portion, which includes a connected flange portion and a mating portion. The mating portion contacts and slides with the valve core portion. The elastic gasket has a first through hole that communicates with the connecting hole. The sealing element has a second through hole that communicates with the first through hole and the connecting hole. The flange portion includes an outwardly flanged portion surrounding the second through hole and connected to the elastic gasket. The outwardly flanged portion is located between the inner surface of the mating portion that contacts the valve core portion and the outer surface of the elastic gasket that contacts the side wall portion.

2. The control valve according to claim 1, characterized in that, The flanged portion extends from the mating portion and toward the elastic pad. At least a portion of the outwardly turned portion extends radially along the side wall portion, and at least a portion of the outwardly turned portion extends into the first through hole and is bonded and fixed to the inner wall of the first through hole. Along the thickness direction of the sealing member, the height of the outwardly turned portion extending into the first through hole is less than the height of the first through hole. Alternatively, the first through hole includes an inner wall extending radially along the sidewall portion, with the everted portion located between the inner surface of the mating portion and the end of the inner wall facing the valve core component.

3. The control valve according to claim 2, characterized in that, At least a portion of the outward-curved portion extends into the first through hole, the compression deformation of the elastic pad is 12%~25%, the height of the outward-curved portion extending into the first through hole is defined as a, the height of the first through hole is b, and along the thickness direction of the sealing component, a≤0.75b.

4. The control valve according to claim 1, characterized in that, The compression deformation of the elastic pad is 12%~25%; The outwardly turned portion includes a first edge facing the valve core component, the first edge surrounding the second through hole, and on the cross-section of the control valve, the radius of the arc between the first edge and the center of the side wall portion is defined as r1, and the circumferential radius of the valve core component is r2, where r1 > r2; The angle between the surface of the outward-facing portion toward the valve core component and the surface of the mating portion toward the valve core component is greater than or equal to 90 degrees.

5. The control valve according to claim 1, characterized in that, The flanged portion further includes a connecting portion, which connects the outwardly flanged portion and the mating portion. The connecting portion has a connecting surface facing the valve core component. The connecting surface is curved, and its diameter gradually increases along the direction close to the outwardly flanged portion.

6. The control valve according to any one of claims 1 to 5, characterized in that, The sealing element further includes two limiting portions fixedly connected to the sealing body portion, one of the limiting portions being located on one side of the sealing body portion in the circumferential direction, and the other limiting portion being located on the other side of the sealing body portion in the circumferential direction. The limiting portion has a first limiting surface and the limiting portion protrudes from the sealing body portion toward the direction close to the elastic pad. The valve body component further includes a stop portion, which is fixedly connected to the side wall portion and located inside the valve cavity. The stop portion has a second limiting surface along the circumference of the stop portion, and the first limiting surface and the second limiting surface are in contact. Along the thickness direction of the sealing member, the height of the limiting portion protruding from the mating portion is less than or equal to the thickness of the elastic pad.

7. The control valve according to claim 6, characterized in that, The compression deformation of the elastic pad is 12%~25%; The limiting part has a transition surface connecting the inner surface of the mating part and the first limiting surface. The transition surface includes a second edge close to the first limiting surface. On the cross-section of the control valve, the radius of the arc between the second edge and the center of the side wall is defined as r3, and the circumferential radius of the valve core component is r2, where r3 > r2.

8. The control valve according to any one of claims 1 to 5, characterized in that, At least a portion of the connecting holes are arranged circumferentially along the sidewall portion, which includes a first portion and a second portion. The connecting holes are all located in the first portion. The sealing component is located between the valve core and the first portion. Two connecting holes adjacent to the two sides of the second portion are defined as the first connecting hole and the second connecting hole, respectively. On a cross-section perpendicular to the axial direction of the sidewall portion, the maximum central angle formed by the edge of the first connecting hole, the edge of the second connecting hole, and the center of the sidewall portion is defined as α. The inner surface of the mating portion is an arc surface, and the central angle corresponding to the mating portion is β. The rotational tolerance angle of the valve core component is θ, where β ≥ α + 2θ.

9. The control valve according to claim 8, characterized in that, The rotational tolerance angle of the valve core component is ±5 degrees, and four connecting holes are arranged circumferentially along the side wall. The central angle corresponding to the inner surface of the mating part is greater than or equal to 270 degrees and less than or equal to 280 degrees.

10. The control valve according to any one of claims 1 to 5, characterized in that, The elastic pad is made of rubber material, the valve body component is made of aluminum material or plastic material through injection molding, the valve core component is made of plastic material through injection molding, the seal is made of Teflon, the elastic pad and the seal are fixed by adhesive bonding, and the surface roughness of the elastic pad away from the valve core component is greater than the surface roughness of the seal facing the valve core component.

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