Seal, multi-channel switching valve, thermal management system of vehicle, and vehicle

Abstract

The application discloses a sealing element, a multi-channel switching valve, a thermal management system of a vehicle and the vehicle, and relates to the technical field of sealing elements. The sealing element comprises a body and a sealing protruding rib, a plurality of spaced apart avoiding through holes are formed in the body, and the avoiding through holes are used for flowing fluid; the sealing protruding rib is arranged on the first side of the body; wherein the thickness of the body is t1, the protruding height of the sealing protruding rib is H, the width of the sealing protruding rib is W, t1 and H satisfy 0.45 <= t1 / H <= 1.8, and W and t1 satisfy 0.45 <= W / H <= 0.9. According to the sealing element provided in the application, the sealing element has a proper friction torque, the position of the sealing protruding rib has a proper sealing surface pressure, the sealing protruding rib has strong stability, the sealing element is prevented from being seriously deformed or deflected under stress, the sealing effect of the sealing protruding rib is ensured, and the sealing performance of the sealing element is ensured.

Description

Technical Field

[0001] This invention relates to the field of sealing technology, and in particular to a sealing element, a multi-channel switching valve, a vehicle thermal management system, and a vehicle. Background Technology

[0002] In related technologies, the structural design of the seals in multi-channel switching valves is unreasonable, which makes the seals prone to severe deformation under stress, resulting in poor sealing performance. Due to inadequate sealing, multi-channel switching valves are prone to problems such as fluid leakage. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide a sealing element in which the thickness t1 of the body and the protrusion height H of the sealing rib satisfy: 0.45≤t1 / H≤1.8, and the width W and the protrusion height H of the sealing rib satisfy: 0.45≤W / H≤0.9. This ensures that the sealing element has a suitable frictional torque, that the sealing rib has a suitable sealing surface pressure, and that the sealing rib has strong stability, preventing severe deformation or deflection of the sealing element under stress, thereby ensuring the sealing effect of the sealing rib and ultimately ensuring the sealing performance of the sealing element.

[0004] The present invention also proposes a multi-channel switching valve having the above-mentioned sealing element.

[0005] The present invention also proposes a thermal management system having the above-mentioned multi-channel switching valve.

[0006] The present invention also proposes a vehicle having the above-mentioned thermal management system.

[0007] According to a first aspect of the present invention, a sealing member includes: a body having at least one clearance through hole formed thereon; and a sealing rib disposed on a first side of the body; wherein the thickness of the body is t1, the protrusion height of the sealing rib is H, the width of the sealing rib is W, and t1 and H satisfy: 0.45≤t1 / H≤1.8, and W and H satisfy: 0.45≤W / H≤0.9.

[0008] According to the embodiments of the present invention, the thickness t1 of the body and the protrusion height H of the sealing rib satisfy: 0.45≤t1 / H≤1.8, and the width W and the protrusion height H of the sealing rib satisfy: 0.45≤W / H≤0.9. This ensures that the frictional torque of the seal is not too large and the sealing surface pressure at the sealing rib position is not too small, so that the seal has a suitable frictional torque and the sealing rib position has a suitable sealing surface pressure, ensuring that the sealing rib has strong stability, avoiding severe deformation or deflection of the seal under force, thereby ensuring the sealing effect of the sealing rib and thus ensuring the sealing performance of the seal.

[0009] According to some embodiments of the present invention, t1 and H satisfy: 1.0≤t1 / H≤1.3.

[0010] According to some embodiments of the present invention, W and H satisfy the condition: 0.55 ≤ W / H ≤ 0.75.

[0011] According to some embodiments of the present invention, there are multiple sealing ribs, and the body includes a main body portion and a thickened portion disposed along the thickness direction of the body, wherein the thickened portion is located between adjacent sealing ribs and is connected to the corresponding sealing rib.

[0012] According to some alternative embodiments of the present invention, at least some of the sealing ribs are arranged in a cross pattern, and at least some of the thickened portions are located in the cross region of the sealing ribs.

[0013] According to some optional embodiments of the present invention, the body extends in an arc shape in a first direction, the sealing rib includes a first sealing rib extending along the first direction and a second sealing rib extending along a second direction, the clearance through hole is provided with a plurality of first sealing ribs spaced apart along the second direction on at least one side of the second direction, the clearance through hole is provided with a plurality of second sealing ribs spaced apart along the first direction on at least one side of the first direction, the second direction being perpendicular to the first direction; wherein, at least a portion of the thickened portion is located between two adjacent second sealing ribs.

[0014] According to some embodiments of the present invention, the body extends in an arc shape in a first direction, and in the first direction, the width of the portion of the body located on opposite sides of the clearance through hole is L1, and the total width of the seal in the first direction is L2, wherein L1 and L2 satisfy: 0.1≤L1 / L2≤0.2.

[0015] According to some embodiments of the present invention, the body extends in an arc shape in a first direction, and in a second direction perpendicular to the first direction, the length of the portion of the body located on opposite sides of the clearance through hole is L3, and the total length of the seal in the second direction is L4, wherein L3 and L4 satisfy: 0.08≤L3 / L4≤0.15.

[0016] According to some embodiments of the present invention, a wear-resistant layer or a wear-reducing layer is provided on a second side of the body that is disposed opposite to the first side of the body.

[0017] According to some optional embodiments of the present invention, the thickness of the body is t1, the wear-resistant layer is provided on the second side of the body, and the thickness t2 of the wear-resistant layer satisfies: 0.1≤t2 / t1≤0.2.

[0018] In some optional embodiments of the present invention, the thickness t2 of the wear-resistant layer satisfies: 0.11≤t2 / t1≤0.16.

[0019] According to a second aspect of the present invention, a multi-channel switching valve includes: a valve housing having a plurality of spaced-apart flow holes; a valve core movably disposed within the valve housing, the valve core having at least one switching channel communicating with two of the flow holes, the valve core being movable to switch the switching channel to communicate with different flow holes; a sealing element, the sealing element being the same as described in the first aspect of the present invention, the sealing element being disposed within the valve housing, the multiple clearance holes for fluid flow, the multiple clearance holes communicating with the multiple flow holes one-to-one, the sealing ribs contacting the inner wall of the valve housing, and the second side of the valve body contacting the valve core.

[0020] According to an embodiment of the present invention, the multi-channel switching valve, by providing the above-mentioned sealing element on the multi-channel switching valve, satisfies the following conditions: the thickness t1 of the body and the protrusion height H of the sealing rib are 0.45≤t1 / H≤1.8, and the width W and the protrusion height H of the sealing rib are 0.45≤W / H≤0.9. This ensures that the frictional torque of the sealing element is not too large and the sealing surface pressure at the sealing rib position is not too small, so that the sealing element has a suitable frictional torque and the sealing rib position has a suitable sealing surface pressure, ensuring that the sealing rib has strong stability, avoiding severe deformation or deflection of the sealing element under force, thereby ensuring the sealing effect of the sealing rib and thus ensuring the sealing performance of the sealing element.

[0021] According to some embodiments of the present invention, the inner wall of the valve housing is formed with a receiving groove, a plurality of the flow holes are formed on the bottom wall of the receiving groove, and the sealing rib contacts the bottom wall of the receiving groove.

[0022] According to some alternative embodiments of the invention, the outer wall of the sealing body contacts the inner wall of the receiving groove.

[0023] A vehicle thermal management system according to a third aspect of the present invention includes: a multi-channel switching valve as described in the second aspect of the present invention.

[0024] According to the thermal management system of the present invention, by setting the above-mentioned multi-channel switching valve, the thickness t1 of the body and the protrusion height H of the sealing rib satisfy: 0.45≤t1 / H≤1.8, and the width W and the protrusion height H of the sealing rib satisfy: 0.45≤W / H≤0.9. This ensures that the frictional torque of the sealing element is not too large and the sealing surface pressure at the sealing rib position is not too small, so that the sealing element has a suitable frictional torque and the sealing rib position has a suitable sealing surface pressure, ensuring that the sealing rib has strong stability, avoiding severe deformation or deflection of the sealing element under force, thereby ensuring the sealing effect of the sealing rib and thus ensuring the sealing performance of the sealing element.

[0025] A vehicle according to a fourth aspect of the present invention includes: a thermal management system as described in the third aspect of the present invention.

[0026] According to the vehicle of the present invention, by setting the above-mentioned thermal management system, the thickness t1 of the body and the protrusion height H of the sealing rib satisfy: 0.45≤t1 / H≤1.8, and the width W of the sealing rib and the protrusion height H of the sealing rib satisfy: 0.45≤W / H≤0.9. This ensures that the frictional torque of the seal is not too large and the sealing surface pressure at the sealing rib position is not too small, so that the seal has a suitable frictional torque and the sealing rib position has a suitable sealing surface pressure, ensuring that the sealing rib has strong stability, avoiding severe deformation or deflection of the seal under force, thereby ensuring the sealing effect of the sealing rib and thus ensuring the sealing performance of the seal.

[0027] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0028] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0029] Figure 1 This is an exploded view of a multi-channel switching valve according to some embodiments of the present invention;

[0030] Figure 2 This is a cross-sectional view of a multi-channel switching valve according to some embodiments of the present invention;

[0031] Figure 3 yes Figure 1 Schematic diagram of the middle valve housing;

[0032] Figure 4 yes Figure 1 Schematic diagram of the middle valve core;

[0033] Figure 5 yes Figure 2 Schematic diagram of the middle sealing component;

[0034] Figure 6 It is along Figure 5 Cross-sectional view of the middle BB line;

[0035] Figure 7 yes Figure 5 A cross-sectional view of the central sealing element, wherein the section line cuts along the first direction and does not pass through the clearance through hole;

[0036] Figure 8 yes Figure 7 Enlarged view of point C in the middle;

[0037] Figure 9 yes Figure 5 A cross-sectional view of the central sealing element, wherein the section line cuts along the first direction and passes through the clearance through hole;

[0038] Figure 10 This is a schematic diagram of the sealing element in Embodiment 2;

[0039] Figure 11 yes Figure 10 A cross-sectional view of the central seal, wherein the section line cuts along a first direction and passes through the clearance through hole.

[0040] Figure label:

[0041] 100. Multi-channel switching valve;

[0042] 1. Sealing element; 11. Body; 111. Clearance through hole; 112. First side; 113. Second side; 12. Sealing rib; 121. First sealing rib; 122. Second sealing rib; 13. Main body; 14. Thickened part; 15. Friction-reducing layer; 16. Rib connection position;

[0043] 2. Valve housing; 21. Receiving groove; 24. Flow through hole; 241. Liquid inlet; 242. Liquid outlet;

[0044] 3. Valve core; 31. Switching channel; 32. Outlet; 4. Actuator; 5. Valve cover. Detailed Implementation

[0045] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0046] The sealing element 1 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0047] Reference Figures 5-11 According to a first aspect embodiment of the present invention, the sealing member 1 includes: a body 11 and a sealing rib 12, wherein at least one clearance through hole 111 is formed on the body 11. For example, the body 11 may be arc-shaped, and the body 11 may be an integrally molded part; a plurality of (e.g., six) clearance through holes 111 are formed on the body 11, the clearance through holes 111 are used for fluid flow, and the fluid flowing in the clearance through holes 111 may be water, antifreeze or other liquids, which are not limited herein.

[0048] Reference Figure 5 and Figure 6 The sealing rib 12 is provided on the first side 112 of the body 11, which can enhance the sealing performance of the first side 112 of the body 11, thereby enhancing the sealing performance of the seal 1. For example, refer to Figure 1 and Figure 5 The sealing element 1 can be used in the multi-channel switching valve 100. The multi-channel switching valve 100 also includes a valve housing 2 and a valve core 3. The sealing element 1 can contact the valve housing 2. The first side 112 of the body 11 can be the side of the body 11 facing downwards, and the sealing rib 12 of the first side 112 of the body 11 contacts the inner wall of the valve housing 2, which can enhance the sealing effect between the body 11 and the valve housing 2. The other side of the body 11 cooperates with the valve core 3, and the valve core 3 rotates relative to the sealing element 1.

[0049] The thickness of the body 11 is t1, the protrusion height of the sealing rib 12 is H, and the width of the sealing rib 12 is W. When the protrusion height H of the sealing rib 12 is constant, if the thickness t1 of the body 11 is too large, the frictional torque of the seal 1 will be large. For example, a large frictional torque of the seal 1 can easily lead to a large sealing pressure on the valve core 3, resulting in excessive friction between the seal 1 and the valve core 3, which is detrimental to the movement of the valve core 3. Conversely, if the thickness t1 of the body 11 is too small, the sealing rib 12 is prone to severe deformation or deflection under stress, affecting the sealing performance of the seal 1.

[0050] By satisfying the following conditions for t1 and H: 0.45≤t1 / H≤1.8, the ratio of the thickness t1 of the body 11 to the protrusion height H of the sealing rib 12 is not greater than 1.8. This can prevent the thickness t1 of the body 11 from being too large, thus avoiding excessive frictional torque of the seal 1. For example, it can prevent excessive friction between the seal 1 and the valve core 3 from affecting the movement of the valve core 3. The ratio of the thickness t1 of the body 11 to the protrusion height H of the sealing rib 12 is not less than 0.45. This can prevent the thickness t1 of the body 11 from being too small, thus avoiding severe deformation or deflection of the sealing rib 12 under stress, and helping to ensure the sealing effect of the seal 1.

[0051] On the other hand, when the height H of the sealing rib 12 is constant, if the width W of the sealing rib 12 is too small, the sealing rib 12 will be relatively slender. When the seal 1 is assembled or when the seal 1 moves relative to other parts, the sealing rib 12 is prone to severe deformation or deflection under stress, which will affect the sealing effect of the seal 1. If the width W of the sealing rib 12 is too large, the frictional torque of the seal 1 will be large. For example, if the frictional torque of the seal 1 is large, it will easily lead to excessive friction between the seal 1 and the valve core 3, which is not conducive to the movement of the valve core 3.

[0052] By ensuring that W and H satisfy the following ratios: 0.45 ≤ W / H ≤ 0.9, the ratio of the width W of the sealing rib 12 to its protrusion height H is not less than 0.45. This prevents the width W of the sealing rib 12 from being too small, avoiding severe deformation or deflection under stress, and ensuring the stability of the sealing rib 12, thus contributing to the sealing effect of the seal 1. Conversely, a ratio of the width W of the sealing rib 12 to its protrusion height H is not greater than 0.9, preventing the width W of the sealing rib 12 from being too large, thus avoiding excessive frictional torque in the seal 1. Having a suitable width-to-height ratio ensures the sealing rib 12 has strong stability. During the assembly process of the seal 1 or during relative movement between the seal 1 and other components, the sealing rib 12 can maintain its position without severe deflection, preventing severe deformation or deflection of the sealing rib 12 that would affect the sealing performance of the seal 1.

[0053] Table 1

[0054]

[0055] For example, Table 1 presents four schemes and shows a comparison of the minimum surface pressure at the sealing rib 12 and the frictional torque of the seal 1 when t1 / H and W / H satisfy different values. In Scheme 1, t1 / H = 1.9, t1 and H do not satisfy 0.45 ≤ t1 / H ≤ 1.8, the value of t1 / H is relatively large, the minimum surface pressure at the sealing rib 12 is relatively large, and the sealing effect of the seal 1 is better, but the frictional torque of the seal 1 is too large, which can easily affect the relative movement between the seal 1 and other components. In Scheme 2, W / H = 0.4, W and H do not satisfy 0.45 ≤ W / H ≤ 0.9, the value of W / H is relatively small, the frictional torque of the seal 1 is relatively small, but the minimum surface pressure at the sealing rib 12 is also the smallest, resulting in a poor sealing effect of the seal 1.

[0056] For example, in Scheme 3, t1 / H = 0.9 and W / H = 0.5, satisfying: 0.45 ≤ t1 / H ≤ 1.8 and 0.45 ≤ W / H ≤ 0.9. Compared with Scheme 1, the frictional torque of seal 1 decreases from 0.9 Nm to 0.82 Nm; compared with Scheme 2, the minimum surface pressure at the sealing rib 12 position increases from 0.66 MPa to 0.68 MPa, so that seal 1 has a suitable frictional torque and the sealing rib 12 position has a suitable sealing surface pressure. In Scheme 4, t1 / H = 1.1 and W / H = 0.65, which also satisfies: 0.45 ≤ t1 / H ≤ 1.8 and 0.45 ≤ W / H ≤ 0.9. Compared to Scheme 3, the minimum surface pressure at the sealing rib 12 position increases from 0.68 MPa to 0.73 MPa, and the frictional torque decreases from 0.82 Nm to 0.78 Nm. This significantly improves the minimum surface pressure at the sealing rib 12 position and the frictional torque of the sealing element 1, thereby enhancing the sealing effect and reducing the frictional torque. Therefore, Scheme 4 can be considered a preferred option.

[0057] Based on the above, by satisfying t1 and H as 0.45 ≤ t1 / H ≤ 1.8, and W and H as 0.45 ≤ W / H ≤ 0.9, it can be ensured that the seal 1 has a suitable frictional torque, and the sealing rib 12 has a suitable sealing surface pressure, thus ensuring the sealing effect of the sealing rib 12 and guaranteeing the sealing performance of the seal 1.

[0058] For example, refer to Figures 5-7The body 11 of the seal 1 extends in an arc shape in a first direction (refer to direction e1 in the attached figure), and the cross-section of the body 11 is arc-shaped. The first side 112 of the body 11 can be the concave side of the arc-shaped body 11, and the cross-section of the first side 112 is also arc-shaped with a radius of R1. The second side 113 of the body 11 can be the convex side of the arc-shaped body 11, and the cross-section of the second side 113 is also arc-shaped with a radius of R2. The difference between R2 and R1 can represent the thickness t1 of the body 11. The center of the above arcs can be the same point. The sealing rib 12 is provided on the second side 113 of the body 11, and the distance between the highest point of the sealing rib 12 (the point farthest from the second side 113 of the body 11) and the center is R3. The difference between R3 and R2 can represent the protrusion height H of the sealing rib 12.

[0059] For example, the protrusion height H of the sealing rib 12 can refer to the protrusion height of a single sealing rib 12; at the same time, the width W of the sealing rib 12 can refer to the width of a single sealing rib 12; t1 and H satisfy: 0.45≤t1 / H≤1.8, and W and t1 satisfy: 0.45≤W / t1≤0.9.

[0060] For example, the protrusion height H of the sealing rib 12 can refer to the average protrusion height of multiple sealing ribs 12, and the width W of the sealing rib 12 can refer to the average width of multiple sealing ribs 12; t1 and H satisfy: 0.45≤t1 / H≤1.8, and W and t1 satisfy: 0.45≤W / t1≤0.9.

[0061] For example, the seal 1 can be an elastic material, preferably rubber (e.g., EPDM rubber), so that the seal 1 has the characteristics of aging resistance, corrosion resistance, insulation and a wide applicable temperature range.

[0062] According to the embodiment of the present invention, the thickness t1 of the body 11 and the protrusion height H of the sealing rib 12 satisfy: 0.45≤t1 / H≤1.8, and the width W and the protrusion height H of the sealing rib 12 satisfy: 0.45≤W / H≤0.9. This ensures that the frictional torque of the seal 1 is not too large and the sealing surface pressure at the position of the sealing rib 12 is not too small. This ensures that the seal 1 has a suitable frictional torque and the sealing rib 12 has a suitable sealing surface pressure, thus ensuring that the sealing rib 12 has strong stability and preventing the seal 1 from being severely deformed or deflected under force. This ensures the sealing effect of the sealing rib 12 and, consequently, the sealing performance of the seal 1.

[0063] According to some embodiments of the present invention, t1 and H satisfy: 1.0 ≤ t1 / H ≤ 1.3. By ensuring that the ratio of the thickness t1 of the body 11 to the protrusion height H of the sealing rib 12 is not greater than 1.3, it is possible to prevent the thickness t1 of the body 11 from being too large, thus avoiding excessive frictional torque of the seal 1, for example, avoiding excessive friction between the seal 1 and the valve core 3, which would affect the movement of the valve core 3; by ensuring that the ratio of the thickness t1 of the body 11 to the protrusion height H of the sealing rib 12 is not less than 1.0, it is possible to prevent the thickness t1 of the body 11 from being too small, thus avoiding severe deformation or deflection of the sealing rib 12 under stress, which helps to ensure the sealing effect of the seal 1.

[0064] According to some embodiments of the present invention, W and H satisfy: 0.55 ≤ W / H ≤ 0.75. By ensuring that the ratio of the width W of the sealing rib 12 to the protrusion height H of the sealing rib 12 is not less than 0.55, it is possible to prevent the width W of the sealing rib 12 from being too small, avoiding severe deformation or deflection of the sealing rib 12 under stress, ensuring the stability of the sealing rib 12, and contributing to the sealing effect of the seal 1. Conversely, by ensuring that the ratio of the width W of the sealing rib 12 to the protrusion height H of the sealing rib 12 is not greater than 0.75, it is possible to prevent the width W of the sealing rib 12 from being too large, avoiding excessive frictional torque in the seal 1. By ensuring that the sealing rib 12 has a suitable width-to-height ratio, it is possible to ensure that the sealing rib 12 has relatively strong stability. During the assembly process of the seal 1 or during the relative movement of the seal 1 with other components, the sealing rib 12 can maintain its position without severe deflection, avoiding severe deformation or deflection of the sealing rib 12 that would affect the sealing performance of the seal 1.

[0065] Reference Figure 10 and Figure 11 According to some embodiments of the present invention, there are multiple sealing ribs 12, and the body 11 includes a main body portion 13 and a thickened portion 14 disposed along the thickness direction of the body 11. The thickened portion 14 is located between adjacent sealing ribs 12 and is connected to the corresponding sealing rib 12. The thickened portion 14 can enhance the connection strength between adjacent sealing ribs 12, which is beneficial to enhance the stability of the sealing ribs 12, avoid severe deformation or deflection of the sealing ribs 12 under force, and thus ensure the sealing performance of the seal 1.

[0066] Reference Figure 10 and Figure 11According to some optional embodiments of the present invention, at least some of the sealing ribs 12 are arranged in a cross pattern, and at least some of the thickened portions 14 are located in the cross pattern area of ​​the sealing ribs 12. This can increase the sealing surface pressure at the thickened portions 14, thereby enhancing the sealing effect of the seal 1. Furthermore, by having at least some of the thickened portions 14 located in the cross pattern area of ​​the sealing ribs 12, the connection strength of the cross-arranged sealing ribs 12 can be enhanced, the stability of the sealing ribs 12 can be improved, and severe deformation or deflection of the sealing ribs 12 under stress can be avoided, thereby further ensuring the sealing performance of the seal 1.

[0067] Reference Figure 10 and Figure 11 According to some optional embodiments of the present invention, the body 11 extends in an arc shape in a first direction, and the sealing rib 12 includes a first sealing rib 121 extending along the first direction, and the sealing rib 12 also includes a second sealing rib 122 extending along a second direction (refer to direction e2 in the figure); the bypass through hole 111 is provided with a plurality of first sealing ribs 121 on at least one side along the second direction, and the plurality of first sealing ribs 121 are spaced apart along the second direction; the bypass through hole 111 is provided with a plurality of second sealing ribs 122 on at least one side along the first direction, and the plurality of second sealing ribs 122 are spaced apart along the first direction, and the second direction is perpendicular to the first direction. The first sealing rib 121 and the second sealing rib 122 can seal the outer peripheral side of the avoidance through hole 111. The avoidance through hole 111 has a plurality of first sealing ribs 121 arranged at intervals along the second direction on at least one side along the second direction, and a plurality of second sealing ribs 122 arranged at intervals along the first direction on at least one side along the first direction. This helps to enhance the sealing effect on the outer peripheral side of the avoidance through hole 111, prevent fluid from flowing into other avoidance through holes 111 through the edge of the avoidance through hole 111, and avoid the problem of fluid cross-flow between different avoidance through holes 111.

[0068] For example, the first direction can be left and right, and the second direction can be up and down. Multiple first sealing ribs 121 are provided on both sides of the through hole 111 along the second direction; multiple second sealing ribs 122 are provided on both sides of the through hole 111 along the first direction.

[0069] For example, refer to Figure 5 and Figure 6 The sealing rib 12 includes a first sealing rib 121 extending along a first direction. Multiple first sealing ribs 121 are provided on both sides of the through hole 111 along a second direction and are spaced apart along the second direction. The second direction is perpendicular to the first direction. The width of the first sealing rib 121 in the second direction is W, and the height of the first sealing rib 121 is H. W and H satisfy: 0.45≤W / H≤0.9.

[0070] For example, refer to Figure 5 and Figure 7 The sealing rib 12 includes a second sealing rib 122 extending along the second direction. Multiple second sealing ribs 122 are provided on both sides of the through hole 111 along the second direction and spaced apart along the first direction. The second direction is perpendicular to the first direction. The width of the second sealing rib 122 in the first direction is W, and the height of the first sealing rib 121 is H. W and H satisfy: 0.45≤W / H≤0.9.

[0071] Reference Figure 10 and Figure 11 At least a portion of the thickened portion 14 is located between two adjacent second sealing ribs 122. For example, at least a portion of the thickened portion 14 is located between adjacent second sealing ribs 122 located in the middle in the first direction. This can enhance the connection strength between adjacent second sealing ribs 122, ensure the stability of the second sealing ribs 122, and prevent the second sealing ribs 122 from being severely deformed or deflected under force, thereby ensuring the sealing performance of the seal 1.

[0072] For example, the valve core 3 can be cylindrical, can cooperate with the body 11, and can rotate relative to the seal 1, with the rotation axis of the valve core 3 extending along the second direction; the body 11 extends in an arc shape in the first direction. When the valve core 3 rotates relative to the seal 1, the second sealing rib 122 extending along the second direction on the seal 1 is more likely to be deformed or deflected by force. The spacing between adjacent second sealing ribs 122 located at both ends in the first direction is small. When one of the second sealing ribs 122 deforms or deflects, it can touch the other second sealing rib 122, which can provide support, preventing excessive deformation of the second sealing rib 122 and reducing the impact of the deformation of the second sealing rib 122 on the sealing effect of the seal 1. The spacing between adjacent second sealing ribs 122 located in the middle of the first direction is relatively large. By placing the thickened portion 14 between adjacent second sealing ribs 122 located in the middle of the first direction, the stability of the second sealing ribs 122 can be better guaranteed, and the second sealing ribs 122 can be prevented from being severely deformed or deflected under force, thereby enhancing the sealing effect of the seal 1.

[0073] For example, refer to Figures 5-7According to other embodiments of the present invention, adjacent second sealing ribs 122 located in the middle of the first direction are cross-connected with the first sealing rib 121 on the sealing member 1 to form a rib connection position 16. The rib connection position 16 can enhance the connection strength between the first sealing rib 121 and the second sealing rib 122, and enhance the stability of the first sealing rib 121 and the second sealing rib 122, making them less prone to deformation or deflection, which helps to ensure the sealing performance of the first sealing rib 121 and the second sealing rib 122. Therefore, the adjacent second sealing ribs 122 located in the middle of the first direction may not be provided with a thickened portion 14.

[0074] Reference Figure 9 and Figure 11 According to some embodiments of the present invention, the body 11 extends in an arc shape in a first direction. In the first direction, the width of the portion of the body 11 located on opposite sides of the avoidance through hole 111 is L1, and the total width of the seal 1 in the first direction is L2. When the total length L2 of the seal 1 in the first direction is constant, if the width L1 of the portion of the body 11 located on opposite sides of the avoidance through hole 111 is too large, the size of the avoidance through hole 111 will be too small, and the throttling effect of the avoidance through hole 111 on the fluid passing through will be obvious, resulting in excessive pressure loss of the fluid at the avoidance through hole 111, which is not conducive to the normal flow of the fluid. If the length L1 of the portion of the body 11 located on opposite sides of the avoidance through hole 111 is too small, the volume of the body 11 will be small, which is not conducive to arranging the sealing ribs 12, and will easily lead to a small sealing surface pressure of the seal 1 and a poor sealing effect of the seal 1.

[0075] By ensuring that L1 and L2 satisfy the condition 0.1≤L1 / L2≤0.2, the ratio of L1 to L2 is within a suitable range. This prevents the size of the bypass through-hole 111 from being too small, thus avoiding a significant throttling effect on the fluid passing through it. It also ensures that the fluid can flow normally at the bypass through-hole 111. Furthermore, it prevents the length L1 of the opposite sides of the bypass through-hole 111 on the body 11 from being too small, ensuring that the sealing ribs 12 can be properly arranged on the body 11, thereby ensuring the sealing effect of the seal 1.

[0076] Reference Figure 6According to some embodiments of the present invention, the body 11 extends in an arc shape in a first direction. In a second direction perpendicular to the first direction, the length of the portion of the body 11 located on opposite sides of the clearance through hole 111 is L3, and the total length of the seal 1 in the second direction is L4. When the total length L4 of the seal 1 in the second direction is constant, if the length L3 of the portion of the body 11 located on opposite sides of the clearance through hole 111 is too large, the size of the clearance through hole 111 will be too small, resulting in a significant throttling effect of the clearance through hole 111 on the fluid passing through, leading to excessive pressure loss of the fluid at the clearance through hole 111, which is not conducive to the normal flow of the fluid; if the length L3 of the portion of the body 11 located on opposite sides of the clearance through hole 111 is too small, the volume of the body 11 will be small, which is not conducive to arranging the sealing ribs 12, and easily leads to a small sealing surface pressure of the seal 1, resulting in a poor sealing effect of the seal 1.

[0077] By satisfying L3 and L4 as 0.08≤L3 / L4≤0.15, the ratio of L3 to L4 is kept within a suitable range. This prevents the size of the bypass through-hole 111 from being too small, thus avoiding a significant throttling effect on the fluid passing through it. It ensures that the fluid can flow normally at the bypass through-hole 111. It also prevents the length L3 of the opposite sides of the bypass through-hole 111 on the body 11 from being too small, thereby ensuring the volume of the body 11. This allows the sealing ribs 12 to be properly arranged on the body 11, thus ensuring the sealing effect of the seal 1.

[0078] Reference Figure 7 and Figure 8 According to some embodiments of the present invention, a wear-resistant layer or a friction-reducing layer 15 is provided on a second side 113 of the body 11 opposite to the first side 112 of the body 11. The wear-resistant layer protects the body 11 and can reduce wear on the body 11 to ensure the service life of the seal 1; the friction-reducing layer 15 protects the body 11 and reduces friction, thereby reducing wear on the body 11 and ensuring the service life of the seal 1. For example, the second side 113 of the body 11 of the seal 1 can be the side facing the valve core 3. Under normal working conditions, the valve core 3 rotates relative to the seal 1. When the valve core 3 rotates, it easily wears the body 11, making it difficult to guarantee the sealing performance of the seal 1 and affecting the service life of the seal 1. By providing a wear-resistant layer or a friction-reducing layer 15 on the second side 113 of the body 11, the wear-resistant layer or the friction-reducing layer 15 contacts the valve core 3. During the rotation of the valve core 3, the wear-resistant layer or the friction-reducing layer 15 wears down, which can reduce the wear of the valve core 3 on the body 11, thereby ensuring the sealing performance and service life of the seal 1.

[0079] Reference Figure 8According to some optional embodiments of the present invention, the thickness of the body 11 is t1, and a wear-resistant layer is provided on the second side 113 of the body 11. The thickness t2 of the wear-resistant layer satisfies: 0.1≤t2 / t1≤0.2. If the wear-resistant layer is too thin, it is easily worn away. After the wear-resistant layer is worn away, it is difficult to continue to protect the body 11. If the body 11 is worn, the service life of the seal 1 is difficult to guarantee. When the wear-resistant layer is too thick, the body 11 is difficult to provide sufficient sealing pressure, resulting in poor sealing effect of the seal 1 and difficulty in guaranteeing the sealing performance of the seal 1. By ensuring that t2 / t1 is not less than 0.1, the wear-resistant layer is prevented from being worn away due to being too thin, which helps to guarantee the service life of the seal 1; by ensuring that t2 / t1 is not greater than 0.2, the body 11 can provide sufficient sealing pressure to guarantee the sealing performance of the seal 1.

[0080] For example, the friction-reducing layer 15 can be a fluoroplastic film layer or a polytetrafluoroethylene layer. The friction-reducing layer 15 has a low coefficient of friction and can play a lubricating role, which can reduce wear and ensure the service life of the seal 1.

[0081] For example, the anti-friction layer 15 can be a coating film. The process of setting the coating film on the body 11 is as follows: First, the side of the coating film facing the body 11 is chemically treated, and the side of the body 11 facing the coating film is chemically treated; then, the coating film and the body 11 are assembled and injection molded so that the shape of the coating film and the body 11 are the same; then, the coating film is stamped by a stamping tool so that a through hole corresponding to the clearance through hole 111 of the body 11 is formed on the coating film, so that the anti-friction layer 15 can be set on the body 11.

[0082] In some optional embodiments of the present invention, the thickness t2 of the wear-resistant layer satisfies: 0.11≤t2 / t1≤0.16. By ensuring that t2 / t1 is not less than 0.11, the wear-resistant layer is prevented from being worn away due to being too thin, which helps to ensure the service life of the seal 1; by ensuring that t2 / t1 is not greater than 0.16, the body 11 can provide sufficient sealing pressure to ensure the sealing performance of the seal 1.

[0083] The following reference Figures 5-11 A seal 1 according to an embodiment of the present invention is described.

[0084] Example 1,

[0085] Specifically, refer to Figures 5-9In this embodiment, the seal 1 includes a body 11 and a plurality of sealing ribs 12, which are integrally formed with the body 11. The body 11 extends in an arc shape in a first direction, and six spaced-apart clearance holes 111 are formed on the body 11 for fluid flow. The thickness of the body 11 is t1, the protrusion height of the sealing ribs 12 is H, and the width of the sealing ribs 12 is W. t1 and H satisfy: 1.0 ≤ t1 / H ≤ 1.3, and W and H satisfy: 0.55 ≤ W / H ≤ 0.75.

[0086] The seal 1 can be used in a multi-channel switching valve 100. The multi-channel switching valve 100 also includes a valve housing 2 and a valve core 3. The first side 112 of the body 11 can be the side of the body 11 facing downwards. The first side 112 of the body 11 is provided with multiple sealing ribs 12, and the sealing ribs 12 are in contact with the inner wall of the valve housing 2. The second side 113 of the body 11, which is opposite to the first side 112 of the body 11, is provided with a wear-resistant layer. The thickness t2 of the wear-resistant layer satisfies: 0.11≤t2 / t1≤0.16. The second side 113 of the body 11 cooperates with the valve core 3, and the valve core 3 rotates relative to the seal 1.

[0087] In the first direction, the width of the portion of the body 11 located on opposite sides of the clearance through hole 111 is L1, and the total width of the seal 1 in the first direction is L2. L1 and L2 satisfy: 0.1 ≤ L1 / L2 ≤ 0.2. In the second direction, the length of the portion of the body 11 located on opposite sides of the clearance through hole 111 is L3, and the total length of the seal 1 in the second direction is L4. L3 and L4 satisfy: 0.08 ≤ L3 / L4 ≤ 0.15. The second direction is perpendicular to the first direction. The first direction can be referred to as the left-right direction in the attached drawing, and the second direction can be referred to as the up-down direction in the attached drawing.

[0088] The sealing rib 12 includes a plurality of first sealing ribs 121 extending along a first direction, and a plurality of second sealing ribs 122 extending along a second direction. Multiple first sealing ribs 121 are provided on opposite sides of the through hole 111 along the second direction, and the multiple first sealing ribs 121 are spaced apart along the second direction. Multiple second sealing ribs 122 are provided on opposite sides of the through hole 111 along the first direction, and the multiple second sealing ribs 122 are spaced apart along the first direction. The first sealing ribs 121 and second sealing ribs 122 are intersected, and the intersection area of ​​the first sealing ribs 121 and second sealing ribs 122 forms a rib connection position 16. The rib connection position 16 can enhance the connection strength between the first sealing ribs 121 and the second sealing ribs 122, and enhance the stability of the first sealing ribs 121 and the second sealing ribs 122, making them less prone to deformation or deflection, thus helping to ensure the sealing performance of the seal 1.

[0089] Example 2,

[0090] Reference Figure 10 and Figure 11 This embodiment has a structure largely the same as that of Embodiment 1, with identical components using the same reference numerals. The only difference is that the body 11 of this embodiment includes a main body portion 13 and a thickened portion 14 disposed along the thickness direction of the body 11. The thickened portion 14 is located between adjacent second sealing ribs 122 located in the middle of the first direction, and the thickened portion 14 is connected to the corresponding sealing rib 12. The thickened portion 14 can enhance the connection strength between adjacent second sealing ribs 122, further ensuring the stability of the second sealing ribs 122, avoiding severe deformation or deflection of the second sealing ribs 122 under stress, thereby further ensuring the sealing performance of the seal 1.

[0091] Reference Figure 1 and Figure 2 According to a second aspect embodiment of the present invention, a multi-channel switching valve 100 includes: a valve housing 2, a valve core 3, and a seal 1. The valve housing 2 is provided with a plurality of (e.g., six) spaced-apart flow holes 24. The valve core 3 is movably disposed within the valve housing 2 and is provided with at least one switching channel 31. The switching channel 31 communicates with two of the flow holes 24 to facilitate fluid flow. Fluid can flow into the switching channel 31 through one of the flow holes 24 and flow from the switching channel 34 to the other flow hole 24, allowing fluid to enter the interior of the multi-channel switching valve 100 through the flow holes 24 and exit the interior of the multi-channel switching valve 100. By moving the valve core 3 to switch the communication between the switching channel 31 and different flow holes 24, the multi-channel switching valve 100 can have different operating modes, enabling the multi-channel switching valve 100 to switch between multiple operating modes and to control different flow rates.

[0092] Continue to refer to Figure 1 and Figure 2 The sealing element 1 is a sealing element 1 according to the first aspect embodiment of the present invention. The sealing element 1 is disposed inside the valve housing 2. Multiple clearance through holes 111 are used for fluid flow, and the multiple clearance through holes 111 are connected to multiple flow through holes 24 in a one-to-one correspondence. Fluid flowing through the flow through holes 24 can flow into the clearance through holes 111, and fluid flowing through the clearance through holes 111 can also flow into the flow through holes 24. For example, referring to… Figure 1 The six clearance holes 111 are connected to the six flow holes 24 one by one to form six flow channels. The partial sealing ribs 12 of the seal 1 are located on the outer periphery of the clearance holes 111 and extend along the circumference of the clearance holes 111. The six flow channels can be divided into six separate flow channels. The sealing ribs 12 can seal a single flow channel.

[0093] Reference Figure 2The sealing rib 12 contacts the inner wall of the valve body 2. The sealing rib 12 can play a sealing role. For example, the sealing rib 12 can seal the outer peripheral side of the flow passage 24. When multiple avoidance passages 111 and multiple flow passages 24 are connected one-to-one to form multiple flow channels, the sealing rib 12 can prevent the fluid in a single flow channel from leaking to other positions in the valve body and prevent the fluid in multiple flow channels from flowing across each other, so as to ensure that the multi-channel switching valve 100 can work normally. The second side 113 of the body 11 contacts the valve core 3, so that when the switching channel 31 in the valve core 3 is connected to the avoidance passage 111, the outer peripheral side of the avoidance passage 111 is in a sealed state, preventing the fluid flowing through the switching channel 31 and the avoidance passage 111 from leaking to other positions in the valve body and preventing the fluid in multiple avoidance passages 111 from flowing across each other, so as to ensure that the multi-channel switching valve 100 can work normally.

[0094] For example, refer to Figure 2 The sealing element 1 is located between the valve housing 2 and the valve core 3. The first side 112 of the body 11 faces the valve housing 2, and multiple sealing ribs 12 are provided on the first side 112 of the body 11. The second side 113 of the body 11 faces the valve core 3, and the second side 113 of the body 11 can be press-fitted with the valve core 3. The valve core 3 can squeeze the sealing element 1, so that the sealing ribs 12 contact the inner wall of the valve housing 2, thereby enhancing the structural stability of the sealing element 1 and realizing the sealing function of the sealing element 1. Among them, some of the sealing ribs 12 are located on the outer peripheral side of the avoidance through hole 111 and extend circumferentially along the avoidance through hole 111. By contacting the inner wall of the valve housing 2 with the sealing ribs 12, the outer peripheral side of the avoidance through hole 111 can be sealed, preventing fluid from flowing from the edge of the avoidance through hole 111 to other avoidance through holes 111, so as to ensure that the multi-channel switching valve 100 can work normally.

[0095] For example, refer to Figure 1 The multi-channel switching valve 100 also includes an actuator 4 and a valve cover 5. The actuator 4 is located at one end of the valve housing 2 and is poweredly connected to the valve core 3. The valve cover 5 is located at the other end of the valve housing 2. The actuator 4 consists of a motor, a reduction gear set, and a control circuit board. When the multi-channel switching valve 100 is not working, the flow passage 24 is not connected to the switching channel 31. When the multi-channel switching valve 100 is working, the actuator 4 drives the valve core 3 to rotate. After the valve core 3 rotates through a certain angle, its switching channel 31 begins to connect with two of the flow passages 24. As the valve core 3 continues to rotate, the area of ​​the connection between the switching channel 31 and the flow passage 24 gradually increases, and the flow rate of the fluid that can pass through it also increases, thus enabling the multi-channel switching valve 100 to control different flow rates.

[0096] For example, the temperature of the fluid flowing through multiple flow holes 24 can be different, and the components through which the fluid flows through multiple flow holes 24 can also be different. (Refer to...) Figure 3The valve housing 2 is provided with six flow holes 24, two of which can be used as liquid inlet holes 241 and the other four flow holes 24 can be used as liquid outlet holes 242. Different liquid outlet holes 242 can correspond to different components, and fluid can flow to different components through different liquid outlet holes 242.

[0097] For example, the valve core 3 can have two switching channels 31. By rotating the valve core 3, the inlet of one switching channel 31 can be connected to one inlet port 241, and the outlet 32 ​​of the switching channel 31 can be connected to one outlet port 242. The fluid flowing into this switching channel 31 can flow to the component corresponding to the outlet port 242. At the same time, the other switching channel 31 of the valve core 3 can be connected to another inlet port 241 and another outlet port 242. The fluid in this switching channel 31 can flow to the component corresponding to the outlet port 242. The temperature of the fluid entering the switching channel 31 through different inlets is different, which allows the multi-channel switching valve 100 to have different operating modes.

[0098] For example, the valve core 3 may have a switching channel 31. When a component connected to one of the outlet holes 242 needs to be cooled, the valve core 3 can be rotated to connect the inlet of the switching channel 31 with the flow hole 24 for lower-temperature fluid, and the outlet 32 ​​of the switching channel 31 with one of the outlet holes 242. Fluid can flow from the inlet hole 241 into the switching channel 31 and from the switching channel 31 into the outlet hole 242, flowing through the outlet hole 242 to the corresponding component and cooling it. When a component connected to one of the outlet holes 242 needs to be heated, the valve core 3 can be rotated to connect the inlet of the switching channel 31 with the inlet hole 241 for higher-temperature fluid, and the outlet 32 ​​of the switching channel 31 with one of the outlet holes 242. Fluid can flow from the inlet hole 241 into the switching channel 31 and from the switching channel 31 into the outlet hole 242, flowing through the outlet hole 242 to the corresponding component and heating it, thereby enabling the multi-channel switching valve 100 to switch between multiple operating modes.

[0099] According to the multi-channel switching valve 100 of the present invention, by providing the above-mentioned sealing element 1 on the multi-channel switching valve 100, the thickness t1 of the main body 11 and the protrusion height H of the sealing rib 12 satisfy: 0.45≤t1 / H≤1.8, and the width W and the protrusion height H of the sealing rib 12 satisfy: 0.45≤W / H≤0.9, so as to ensure that the frictional torque of the sealing element 1 is not too large and the sealing surface pressure at the position of the sealing rib 12 is not too small, so that the sealing element 1 has a suitable frictional torque and the sealing rib 12 has a suitable sealing surface pressure, ensuring that the sealing rib 12 has strong stability, avoiding severe deformation or deflection of the sealing element 1 under force, thereby ensuring the sealing effect of the sealing rib 12, and thus ensuring the sealing performance of the sealing element 1.

[0100] Reference Figure 3 According to some embodiments of the present invention, the inner wall of the valve housing 2 is formed with a receiving groove 21, and a plurality of flow holes 24 are formed on the bottom wall of the receiving groove 21. The sealing member 1 can be disposed in the receiving groove 21, and a plurality of clearance holes 111 are connected to the plurality of flow holes 24 in a one-to-one correspondence. The sealing rib 12 contacts the bottom wall of the receiving groove 21 and can play a sealing role. For example, the sealing rib 12 can seal the outer peripheral side of the flow hole 24. When the plurality of clearance holes 111 are connected to the plurality of flow holes 24 in a one-to-one correspondence to form a plurality of flow channels, the sealing rib 12 can seal a single flow channel to prevent the fluid in the single flow channel from leaking to other positions in the valve body and to prevent the fluid in the multiple flow channels from flowing across each other, so as to ensure that the multi-channel switching valve 100 can work normally.

[0101] According to some optional embodiments of the present invention, the outer side wall of the body 11 contacts the inner side wall of the receiving groove 21. The inner side wall of the receiving groove 21 can limit the sealing element 1, preventing the sealing element 1 from moving when the valve core 3 moves, which helps to ensure the sealing effect of the sealing element 1. Furthermore, by having the outer side wall of the body 11 contact the inner side wall of the receiving groove 21, no other limiting structure is needed on the valve body to fix the sealing element 1, making the overall structure simpler.

[0102] A vehicle thermal management system according to a third aspect of the present invention includes a multi-channel switching valve 100 according to the second aspect of the present invention described above.

[0103] According to the thermal management system of this invention, by setting the multi-channel switching valve 100 described above, the thickness t1 of the body 11 and the protrusion height H of the sealing rib 12 satisfy: 0.45≤t1 / H≤1.8, and the width W and the protrusion height H of the sealing rib 12 satisfy: 0.45≤W / H≤0.9. This ensures that the frictional torque of the sealing element 1 is not too large, and the sealing surface pressure at the position of the sealing rib 12 is not too small, so that the sealing element 1 has a suitable frictional torque and the sealing rib 12 has a suitable sealing surface pressure, ensuring that the sealing rib 12 has strong stability, avoiding severe deformation or deflection of the sealing element 1 under force, thereby ensuring the sealing effect of the sealing rib 12, and thus ensuring the sealing performance of the sealing element 1.

[0104] A vehicle according to a fourth aspect of the present invention includes: a thermal management system according to the third aspect of the present invention described above.

[0105] According to the vehicle of the present invention, by setting the above-mentioned thermal management system, the thickness t1 of the body 11 and the protrusion height H of the sealing rib 12 satisfy: 0.45≤t1 / H≤1.8, and the width W and the protrusion height H of the sealing rib 12 satisfy: 0.45≤W / H≤0.9, so as to ensure that the frictional torque of the seal 1 is not too large and the sealing surface pressure at the position of the sealing rib 12 is not too small, so that the seal 1 has a suitable frictional torque and the sealing rib 12 has a suitable sealing surface pressure, ensuring that the sealing rib 12 has strong stability, avoiding severe deformation or deflection of the seal 1 under force, thereby ensuring the sealing effect of the sealing rib 12, and thus ensuring the sealing performance of the seal 1.

[0106] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0107] In the description of this invention, "a plurality of" means two or more.

[0108] In the description of this invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0109] In the description of this invention, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0110] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0111] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A multi-channel switching valve, characterized in that, include: The valve housing has a plurality of spaced-apart flow holes. A valve core is movably disposed within the valve housing. The valve core is provided with at least one switching channel, which communicates with two of the flow through holes. The valve core is moved to switch the switching channel to communicate with different flow through holes. A sealing element is disposed within the valve housing. The sealing element includes a body and a sealing rib. At least one clearance through hole is formed on the body, and there are multiple clearance through holes for fluid flow. The multiple clearance through holes are connected to multiple flow through holes in a one-to-one correspondence. The sealing rib is disposed on a first side of the body and contacts the inner wall of the valve housing. The second side of the body contacts the valve core. The thickness of the body is t1, the protrusion height of the sealing rib is H, and the width of the sealing rib is W. The t1 and H satisfy: 0.45≤t1 / H≤1.8, and the W and H satisfy: 0.45≤W / H≤0.

9.

2. The multi-channel switching valve according to claim 1, characterized in that, The condition t1 and H satisfy: 1.0 ≤ t1 / H ≤ 1.

3.

3. The multi-channel switching valve according to claim 1, characterized in that, The W and H satisfy the condition: 0.55 ≤ W / H ≤ 0.

75.

4. The multi-channel switching valve according to claim 1, characterized in that, There are multiple sealing ribs, and the body includes a main body portion and a thickened portion disposed along the thickness direction of the body. The thickened portion is located between adjacent sealing ribs and is connected to the corresponding sealing rib.

5. The multi-channel switching valve according to claim 4, characterized in that, At least some of the sealing ribs are arranged in a cross pattern, and at least some of the thickened portions are located in the cross area of ​​the sealing ribs.

6. The multi-channel switching valve according to claim 4, characterized in that, The body extends in an arc shape in a first direction. The sealing rib includes a first sealing rib extending along the first direction and a second sealing rib extending along a second direction. The clearance through hole is provided with a plurality of first sealing ribs spaced apart along the second direction on at least one side of the second direction. The clearance through hole is provided with a plurality of second sealing ribs spaced apart along the first direction on at least one side of the first direction. The second direction is perpendicular to the first direction. At least a portion of the thickened portion is located between two adjacent second sealing ribs.

7. The multi-channel switching valve according to claim 1, characterized in that, The body extends in an arc shape in a first direction. In the first direction, the width of the portion of the body located on opposite sides of the clearance through hole is L1, and the total width of the seal in the first direction is L2. L1 and L2 satisfy: 0.1≤L1 / L2≤0.

2.

8. The multi-channel switching valve according to claim 1, characterized in that, The body extends in an arc shape in a first direction. In a second direction perpendicular to the first direction, the length of the portion of the body located on opposite sides of the clearance through hole is L3. The total length of the seal in the second direction is L4. L3 and L4 satisfy: 0.08≤L3 / L4≤0.

15.

9. The multi-channel switching valve according to any one of claims 1-8, characterized in that, The second side of the body, which is disposed opposite to the first side of the body, is provided with a wear-resistant layer or a wear-reducing layer.

10. The multi-channel switching valve according to claim 9, characterized in that, The wear-resistant layer is provided on the second side of the body, and the thickness t2 of the wear-resistant layer satisfies: 0.1≤t2 / t1≤0.

2.

11. The multi-channel switching valve according to claim 10, characterized in that, The thickness t2 of the wear-resistant layer satisfies: 0.11≤t2 / t1≤0.

16.

12. The multi-channel switching valve according to claim 1, characterized in that, The inner wall of the valve housing has a receiving groove, and a plurality of flow holes are formed on the bottom wall of the receiving groove. The sealing rib contacts the bottom wall of the receiving groove.

13. The multi-channel switching valve according to claim 12, characterized in that, The outer wall of the body contacts the inner wall of the receiving groove.

14. A thermal management system for a vehicle, characterized in that, include: The multi-channel switching valve according to any one of claims 1-13.

15. A vehicle, characterized in that, include: The thermal management system according to claim 14.

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