A seal, and a fluid assembly and a fluid device comprising the seal

Abstract

The present application provides a kind of seal, including main part, seal is formed with first through hole, seal also has the first sealing portion corresponding with first through hole, first through hole is at least two, first sealing portion includes main part, first extension part and second extension part, first extension part and second extension part are located in the opposite sides of main part, first extension part and second extension part extend from main part towards the direction of first through hole, and the distance between first extension part and second extension part is greater than the height of main part, first extension part is closed loop convex structure, and second extension part is also closed loop convex structure.It can have good sealing performance under relatively small pre-pressure when the sealing area is larger.The present application also provides fluid assembly and fluid device comprising the seal.

Description

Technical Field

[0001] This invention relates to the field of sealing, and more particularly to a sealing component and a fluid assembly and fluid device including the sealing component. Background Technology

[0002] Sealing components can be used in the passage connections of fluid control systems, placing a seal between two mounting surfaces to prevent fluid leakage between them. In some applications, where a large sealing area is required, such as... Figures 10 to 12 As shown, the sealing component 100 requires a relatively high pre-pressure setting on the mounting surface 200 to prevent insufficient pre-pressure on the sealing component 100 in areas far from the fixed point 300. Therefore, the installation requirements for this type of sealing component are more complex when the sealing surface is large. It should be noted that "pre-pressure" refers to the pressure on the mounting surface and the sealing component when they are not subjected to fluid pressure. Summary of the Invention

[0003] The purpose of this solution is to provide a seal that has good sealing performance under relatively low pre-pressure when the sealing area is large, as well as a fluid assembly and fluid device including the seal.

[0004] This solution provides a sealing element, including a main body, a first through hole, and a first sealing portion corresponding to the first through hole. There are at least two first through holes, each with a corresponding first sealing portion. Each first sealing portion includes a first extension and a second extension, extending from the main body toward the first through hole. The maximum distance between the first and second extensions is greater than the height of the main body. The first extension forms a closed-loop protrusion around the first through hole at one end, and the second extension forms a closed-loop protrusion around the first through hole at the other end. The sealing element also has a first inner wall and an outer wall that are laterally opposed. The sealing element includes at least two first protrusions that laterally protrude from the first inner wall, with the distal ends of the first protrusions extending beyond the distal ends of the first extensions in the lateral direction.

[0005] And / or, the seal further includes at least two second protrusions that project laterally out of the outer wall, the distal ends of the second protrusions extending laterally beyond the distal ends of the third extension.

[0006] In the sealing element provided by this solution, the first extension portion and the second extension portion are located on opposite sides of the main body portion. The first extension portion and the second extension portion extend out from the main body portion toward the first through hole, and the distance between the first extension portion and the second extension portion is greater than the height of the main body portion. This allows for better sealing performance under relatively small pre-pressure when the sealing area is large.

[0007] This solution also provides a fluid device, the fluid device including a housing, the housing further including a first body, the housing having a channel and a receiving groove surrounding the channel, the receiving groove being provided with the aforementioned sealing element, the multiple through holes of the sealing element corresponding to the multiple channels, and the first sealing portion surrounding the channel.

[0008] In the fluid device provided by this solution, the first extension portion and the second extension portion are located on opposite sides of the main body portion. The first extension portion and the second extension portion extend out from the main body portion toward the first through hole, and the distance between the first extension portion and the second extension portion is greater than the height of the main body portion. This allows for better sealing performance under relatively small pre-pressure when the sealing area is large.

[0009] This solution also provides a fluid assembly, including a fluid device and a second body. The fluid device includes a housing, and the housing further includes a first body. The housing has a channel and a receiving groove surrounding the channel. The receiving groove is provided with the aforementioned sealing element. At least two through holes of the sealing element correspond to the at least two channels, and a first sealing portion surrounds the channel. The first body and the second body are fixed together, and the first body and the second body press against the sealing element.

[0010] In the fluid device provided by this solution, the first extension portion and the second extension portion are located on opposite sides of the main body portion. The first extension portion and the second extension portion extend out from the main body portion toward the first through hole, and the distance between the first extension portion and the second extension portion is greater than the height of the main body portion. This allows for better sealing performance under relatively small pre-pressure when the sealing area is large. Attached Figure Description

[0011] Figure 1 An exploded structural diagram of a fluid assembly of the present invention, including a seal, a first body, and a second body, is shown.

[0012] Figure 2 It shows Figure 1 A partial cross-sectional view of the seal shown;

[0013] Figure 3A front view schematic diagram of a second embodiment of the sealing element and the first main body assembly structure of this application is shown;

[0014] Figure 4 It shows Figure 3 A partial cross-sectional view of the seal and the first body along line FF;

[0015] Figure 5 It shows Figure 3 A partial cross-sectional view of the seal and the first body along line EE;

[0016] Figure 6 It shows Figure 3 A partial cross-sectional view along line BB showing the seal, the second body, and the first body in an uncompressed state.

[0017] Figure 7 It shows Figure 3 A partial cross-sectional view along line BB showing the seal, the second body, and the first body in their installed state.

[0018] Figure 7a It shows Figure 7 A partial cross-sectional schematic diagram of the seal, the first body, and the second body shown.

[0019] Figure 7b It shows Figure 7 A partial cross-sectional schematic diagram of the seal, the first body, and the second body shown.

[0020] Figure 8 It shows Figure 3 A partial cross-sectional view along line CC showing the seal, the first body, and the second body in their installed state.

[0021] Figure 9 A cross-sectional schematic view of the valve housing is shown;

[0022] Figure 10 A front view schematic diagram of a sealing component and its mounting surface is shown;

[0023] Figure 11 It shows Figure 10 A partial sectional view of the sealing component and mounting surface along line D1-D1;

[0024] Figure 12 It shows Figure 10 The diagram shows a partial cross-sectional view of the sealing component and mounting surface along line D2-D2. Detailed Implementation

[0025] The embodiments are described in detail below with reference to the accompanying drawings.

[0026] SeeFigures 1 to 12 This fluid device includes a housing 4 and an inner cavity 41 located within the housing 4. The housing 4 also has a first body 2 and at least two channels 42. One end of each channel 42 is connected to an opening, and the other end is connected to the inner cavity 41. The channels 42 connect the opening and the inner cavity 41. All openings of the valve can be connected to other parts of the fluid control system at once through the first body 2, which can simplify the installation process, reduce leakage points at the connection points, and increase the reliability of the seal. This fluid device is not limited to valves; it can also be pumps, heat exchangers, or other devices used in fluid control systems. It can also be an integrated component of multiple functional units, such as an integrated component of a heat exchanger and valve, a valve and pump, or a pump and heat exchanger, which can improve the sealing effect.

[0027] The first body 2 has a first mounting surface, which has a mounting surface 24. The first body 2 includes at least two openings 23 and a receiving groove 21 recessed in the mounting surface 24. At least a portion of the sealing member 1 is disposed in the receiving groove 21, and the sealing member 1 surrounds each opening 23. The first body 2 has a first mounting hole 26 extending through its thickness direction, and at least two of the first mounting holes are located at the edges of the first mounting surface. In this embodiment, the four first mounting holes 26 are located at the four corners of the first mounting surface, and the first mounting holes may not be provided in other areas of the first mounting surface (e.g., the middle area).

[0028] The second body 3 corresponds to the first body 2. The second body 3 has a second mounting surface 31 and includes at least two interface portions 32, which correspond to at least two opening portions. The second body 3 has a second mounting hole 33 corresponding to the first mounting hole 26, allowing the first body 2 and the second body 3 to be fixed together by screws or bolts. By pressing the sealing member 1 between the first body 2 and the second body 3, a fluid seal can be achieved between the opening portions. The main body of the first body 2 can be made of an organic polymer material, such as plastic, or it can be made of metal.

[0029] like Figure 1 and Figure 2As shown, the seal 1 has at least two first through holes 104, and the seal also has a first sealing portion 101 corresponding to the first through holes 104. The first sealing portion 101 includes a first extension portion 11 and a second extension portion 12, and there are at least two first sealing portions 101. The first extension portion 11 surrounds and forms a part of the first through hole 104, and the second extension portion 12 also surrounds and forms a part of the first through hole 104. On the outer peripheral side of the seal 1, the seal 1 also includes a second sealing portion 102. The second sealing portion 102 includes a third extension portion 13 and a fourth extension portion 14. In this embodiment, the first sealing portion and the second sealing portion are connected by a main body portion. In other embodiments, the first sealing portion and the second sealing portion may also be separately provided.

[0030] Let H represent the vertical direction, and Y represent the horizontal direction, with the vertical and horizontal directions being approximately perpendicular. As shown in the cross-section of the seal, the seal includes a main body 15, a first extension 11, a second extension 12, a third extension 13, and a fourth extension 14. The first and second extensions 11 and 12 are located on opposite vertical sides of the main body 15, and the third and fourth extensions 13 and 14 are also located on opposite vertical sides of the main body 15. The first, second, third, and fourth extensions 11, 12, 13, and 14 extend outwards from the main body in a direction away from it. In this embodiment, the cross-section of the main body 15 is approximately rectangular, and the first, second, third, and fourth extensions 11, 12, 13, and 14 extend outwards corresponding to the four corners of the main body 15. The seal 1 also has a first inner wall 191 and an outer wall 192 that are laterally opposed. The first outer extension 11 and the second outer extension 12 extend from the main body 15 toward the first through hole 104. The first side 191 of the seal 1 corresponds to the first through hole 104. The distance between the first outer extension 11 and the third outer extension 13 is greater than the width (W) of the main body 15, the distance between the first outer extension 11 and the second outer extension 12 is greater than the height (h) of the main body 15, and the distance between the third outer extension and the fourth outer extension is also greater than the vertical height (h) of the main body 15. The first outer extension 11 and the third outer extension 13 are located on the same vertical side of the main body 15, and a first groove 17 is formed between the first outer extension and the third outer extension. The second outer extension 12 and the fourth outer extension 14 are located on the same vertical side of the main body 15, and a second groove 18 is formed between the second outer extension and the fourth outer extension.

[0031] The first inner wall, outer wall, first extension, second extension, third extension, and fourth extension all extend correspondingly to the main body, and the direction of extension is perpendicular or substantially perpendicular to the cross-sectional direction. It should be noted that the first inner wall, outer wall, first extension, second extension, third extension, and fourth extension will vary as a whole with the shape of the seal.

[0032] The first, second, third, and fourth extensions have roughly strip-shaped cross-sections, with one end connected to the main body. It should be noted that "strip-shaped" refers to a cross-sectional length greater than its average thickness, and not specifically a long, narrow shape with parallel sides. Conical, elliptical, or other shapes that meet the definition are all included. The cross-sectional length of each extension can be more than 1.4 times its average thickness, making the strip-shaped extensions easier to bend. The portion of each extension closest to the main body is defined as the proximal end, and the portion farther from the main body is defined as the distal end.

[0033] like Figure 3 and Figure 4 As shown, the first sealing part 101 surrounds the opening 23, and the projections of the opening 23 and its corresponding interface part 32 on the second mounting surface 31 are all within the projection range of the first through hole 104. After the first body 2 and the second body 3 are fixed, the first sealing part 101 also surrounds the interface part 32 corresponding to the opening 23. The first sealing part 101 is in a compressed state, so that the opening 23 and the interface part 32 are connected and sealed.

[0034] like Figure 2 As shown, when the seal 1 is in an uncompressed state in the vertical direction, the overall height of the seal 1 in the vertical direction is 'a', the height of the first extension 11 in the vertical direction is 'h1', where 'h1' is the vertical distance between the top of the first extension and the bottom of the first groove 17, and the height of the second extension 12 in the vertical direction is 'h2', where 'h2' is the vertical distance between the top of the second extension and the bottom of the second groove. Figure 7 As shown, when the seal 1 is in the installed state, the overall height of the seal 1 in the vertical direction is b, and h1 + h2 ≥ ab. Therefore, after installation, the bottom of the first groove 17 does not need to contact the second mounting surface 31, and the bottom of the second groove 18 does not need to contact the bottom wall of the receiving groove 21. Thus, the main deformation of the seal 1 is concentrated in the various extensions, while the deformation of the main body 15 in the vertical direction is relatively small. The stiffness of each extension is relatively small compared to the main body 15, and each extension is more easily deformed than the main body. Therefore, this arrangement can relatively reduce the pre-pressure of the seal 1 on the second mounting surface 31 and the first main body 2 under a given compression.

[0035] In this embodiment, the compression ratio (ab) / a of the seal ranges from 0.25 to 0.40, which allows for a relatively low pre-pressure while still meeting sealing requirements. Furthermore, compared to a seal with a circular cross-section of the same height and material, the upper limit of the compression ratio that the seal in this embodiment can withstand is relatively large, reaching 0.4.

[0036] likeFigure 1 As shown, the first body 2 and the second body 3 are fixedly connected. At least two first mounting holes are located near the edges of the mounting surface (in this embodiment, they are located at the four corners), and no first mounting holes are provided in the central area of ​​the mounting surface. Because the first body has at least two arranged openings 23, the first mounting surface 24 is relatively large. In areas far from the first mounting holes 26, the first body experiences relatively small forces perpendicular to the mounting surface, making it prone to significant deformation. This deformation is particularly noticeable when the first body is thin or made of plastic. Furthermore, the deformation of the seal is also relatively small, increasing the possibility of leakage. In this embodiment, the pre-pressure of the seal on the first body can be relatively small, resulting in relatively small deformation of the mounting surface 24 and a more consistent distance between the mounting surface 24 and the second mounting surface 31. This ensures a more uniform vertical compression distribution of the entire sealing gasket in the direction parallel to the mounting surface, reducing the risk of seal failure due to insufficient compression in certain areas. In addition, reducing the pressure of the seal on the first body can reduce the preload required between the first body and the second body, and can relatively simplify the fixing structure between the first body and the second body.

[0037] Seal 1 is made of an elastic material and can be injection molded from organic polymer materials, such as EPDM rubber or silicone rubber. EPDM rubber has a lower Shore hardness than silicone rubber, therefore, under the same vertical pressure, EPDM rubber has a relatively greater compressibility in the vertical direction. For example... Figure 7 As shown, the overall dimension of the cross-section of the seal 1 in the transverse direction can be adjusted according to the width of the receiving groove 21, and the main body may not contact the inner wall of the receiving groove 21.

[0038] like Figure 2 As shown, the first extension 11 has an inner side 111 and an outer side 112 arranged on its lateral sides. The outer side 112 of the first extension is part of the first inner wall 191. The dividing line between the inner side 111 and the outer side 112 of the first extension is the farthest point of the first extension 11 in the vertical direction.

[0039] like Figure 6 , Figure 7 and Figure 7aAs shown, the contact surface between the second body 3 and the seal 1 is approximately perpendicular to the vertical direction of the seal. During installation, when the seal 1 is just compressed, the distal end of the first extension 11 contacts the second mounting surface 31 of the second body 3, and the distal end of the first extension 11 is subjected to pressure F1 from the second body 3. The maximum width of the first extension 11 and the second extension 12 in the transverse direction is less than the minimum width of the body in the transverse direction. The bending stiffness of the first extension 11 is relatively smaller than that of the body 15, and the rate of change of the first extension in the vertical direction is relatively larger than that of the body 15. Since the distal end of the first extension 11 is inclined away from the proximal end and away from the outer wall, the direction of this pressure F1 does not exceed the centroid of the first extension 11. Therefore, this pressure F1 will cause the first extension to deform downward at a certain angle, and the overall effect is that the height of the seal in the vertical direction is reduced.

[0040] like Figure 7 and Figure 7a As shown, the first inner wall 191 is opposite to the opening 23, and the outer surface 112 of the first extension 11 will bear the resultant force F3 of the pressure inside the flow channel corresponding to the opening. Since the first extension 11 is elongated, after the seal is installed, the projection of the outer surface 112 of the first extension in the direction parallel to the mounting surface 24 has a smaller area facing the mounting surface 24 than the area facing away from the second mounting surface 31. Therefore, the resultant force F3 will include a component force perpendicular to the second mounting surface 31. If the fluid pressure in the flow channel increases, the resultant force F3 of the fluid pressure on the outer surface 112 will increase. This resultant force F3 is in a different direction from the pressure F1, and the increased component force facing the second mounting surface 31 makes the first extension 11 exert greater pressure on the second mounting surface 31, thereby improving the sealing effect of the first extension 11. In addition to the pre-pressure causing deformation of the extension, the fluid pressure will also cause deformation of the extension. Moreover, within a specific fluid pressure range, the greater the fluid pressure in the flow channel, the better the sealing effect. This fluid can be gaseous, liquid, or a mixture of gas and liquid.

[0041] Similarly, such as Figure 7bAs shown, the second extension 12 also has inner and outer surfaces arranged on its lateral sides. The boundary between the inner and outer surfaces of the second extension is the far end of the second extension in the vertical direction. The bottom wall of the receiving groove 21 is perpendicular to the vertical direction of the seal. Since the second extension is elongated, the area of ​​the outer surface of the second extension projected in the direction parallel to the bottom wall is smaller than the area away from the bottom wall. The outer surface of the second extension also bears the resultant force F3 of the fluid pressure inside the flow channel. If the liquid pressure inside the flow channel increases, the resultant force of the liquid pressure on the outer surface will increase. This resultant force F3 is in a different direction from the pressure F1. The increased force on the bottom wall of the receiving groove 21 increases the pressure of the second extension 12 on the bottom wall of the receiving groove 21, thereby improving the sealing effect of the second extension. In addition to the pre-pressure causing deformation of the extension, the fluid pressure also causes deformation of the extension. Moreover, within a specific fluid pressure range, the greater the liquid pressure in the flow channel, the better the sealing effect.

[0042] The first extension portion 11 is arc-shaped at its far end away from the main body portion, which makes the contact area between the first extension portion 11 and the second mounting surface 31 smaller when the first extension portion 11 is subjected to pressure. This makes the far end of the first extension portion 11 easier to slide in the lateral direction, which can reduce the risk that at least a part of the first extension portion 11 will bend toward the outer wall 192 after installation, thereby reducing the risk of seal failure.

[0043] like Figure 2 As shown, the distal end of the inner surface 111 of the first extension portion 11 is inclined towards the first inner wall 191 in the lateral direction relative to the proximal end. This makes it easier for the distal end of the first extension portion 11 to bend away from the outer wall 192 during the compression of the seal 1, reducing the risk that at least a portion of the first extension portion will bend towards the outer wall 192 after installation, thereby reducing the risk of seal failure. The thickness of the distal end of the first extension portion 11 away from the main body portion 15 is less than the thickness of the proximal end near the main body portion 15, making it easier for the distal end of the first extension portion to bend towards the first inner wall 191, thereby reducing the risk of seal failure. The overall shape of the first extension portion 11 can be approximately conical. In this embodiment, the included angle α between the first extension portion 11 and the third extension portion 13 can range from 40° to 100°, for example, 40°, 60°, 80°, and 100°. The second and fourth extension portions can also have similar shape and angle settings as described above, which will not be elaborated here.

[0044] like Figure 2As shown, in this embodiment, the first outer extension 11 and the second outer extension 12 are symmetrically arranged in the transverse direction. The first inner wall 191 is an arc shape that is concave towards the outer wall 192 in the main body 15 portion. Specifically, it is an arc shape, but it can also be other shapes that are concave towards the outer wall, such as a triangle or trapezoid. This facilitates the bending of the first and second outer extensions.

[0045] like Figure 2 As shown, in this embodiment, the third extension 13 has the same vertical height as the first extension 11, and the fourth extension 14 has the same vertical height as the second extension 12. The first and third extensions are symmetrically arranged vertically, as are the second and fourth extensions, which ensures a more uniform force distribution on the seal in the vertical direction. The cross-sections of the first groove 17 and the second groove 18 are both approximately trapezoidal, recessed into the main body 15. In other embodiments, the cross-sections of the first and second grooves may also be approximately circular or triangular.

[0046] like Figure 2 and Figure 6 As shown, the seal 1 in this embodiment includes at least two first protrusions 161 that protrude laterally from the first inner wall 191. The distal ends of the first protrusions 161 in the lateral direction extend beyond the distal ends of the first extension 11 in the lateral direction. That is, with the vertical axis of symmetry XX of the sealing gasket as the reference line, the distance s1 from the distal end of the first protrusion in the lateral direction to the XX line is greater than the distance s2 from the distal end of the first extension in the lateral direction to the XX line. This ensures that when at least a portion of the seal is placed in the receiving groove 21, the lateral distal end of the first extension 11 is separated from the inner sidewall of the receiving groove 21, and the first extension 11 remains within the receiving groove 21 when the first mounting surface and the second mounting surface 31 are brought together, thereby preventing the first extension 11 from being trapped between the mounting surface 24 and the second mounting surface 31, and thus reducing the risk of damage to the first extension 11.

[0047] Similarly, the seal also includes at least two second protrusions 162 that laterally project beyond the outer wall 192, and the distal end of the third protrusion 162 in the lateral direction extends beyond the distal end of the third extension 13 in the lateral direction. When a portion of the seal 1 is received within the receiving groove 21, the first protrusion 161 and the second protrusion 162 are interference-fitted with the inner wall of the receiving groove 21, thereby limiting the seal 1 within the receiving groove 21 and preventing the seal 1 from dislodging from the receiving groove 21 during installation. Figure 1 and Figure 5As shown, the seal also includes a third sealing portion 103, which further includes a fifth extension portion 106 and a sixth extension portion 107, located on opposite sides of the main body portion 15. The fifth extension portion is located between two adjacent first through holes 104 of the seal 1, and the fifth extension portion 106 is located between the first extension portions 11 of the two adjacent first through holes, forming a first groove 17 between the fifth extension portion and the first extension portion. The sixth extension portion is located between two adjacent first through holes of the seal, and the sixth extension portion is located between the second extension portions of the two adjacent first through holes, forming a second groove 18 between the fifth extension portion and the first extension portion. The fifth and sixth extension portions improve the sealing effect between adjacent first through holes 23. The seal also includes a second through hole 105, a fifth extension 106 forming a portion of the second through hole 105, and a sixth extension 107 forming a portion of the second through hole 105. The fifth and sixth extensions extend from the main body 15 toward the second through hole. The seal 1 also has a second inner wall 193 corresponding to the second through hole 105. When the distance between the two first through holes 23 is large, providing a second through hole 105 between the two first through holes can save material and reduce weight of the seal, while also facilitating the positioning of the seal. The seal also includes at least two third protrusions 163 that protrude laterally from the second inner wall 193. The distal ends of the third protrusions 163 in the lateral direction extend beyond the distal ends of the fifth extension 106 in the lateral direction. The third protrusions 163 can be interference-fitted with the inner wall of the receiving groove 21, so that the seal 1 is positioned within the receiving groove 21.

[0048] like Figure 8 As shown, a portion of the seal is located between two adjacent first through holes 23. The first extension 11 of one first sealing portion and the first extension 11 of another first sealing portion are located on the same vertical side of the main body 15, forming a first groove 17 between the two first extensions. The second extension 12 of one first sealing portion and the second extension 12 of another first sealing portion are located on the same vertical side of the main body, forming a second groove 18 recessed into the main body 15 between the second and fourth extensions. Therefore, both sides of the seal can be subjected to the pressure of the fluid in the flow channel. Regardless of which side has a higher fluid pressure in the flow channel, the seal can provide a better sealing effect, resulting in a better sealing effect between adjacent through holes.

[0049] like Figure 1As shown, the first body 2 includes six openings, the sealing element 1 includes six first through holes 104 and six corresponding first sealing parts 101, and the second body includes six interface parts. Each opening, first sealing part, and interface part is correspondingly arranged. Three first sealing parts 101 are arranged side-by-side sequentially, corresponding sequentially to the three openings 23 and also sequentially to the three interface parts 32. The body parts of adjacent first sealing parts 101 can be connected. Each opening 23 is fluid-tightly separated from the others. At least two first sealing parts are integrally injection molded, which facilitates manufacturing, saves materials, and reduces installation steps. In this embodiment, the six first sealing parts are arranged in two rows, with three first sealing parts in each row. In other embodiments, the sealing element may have eight first sealing parts, arranged in two rows, with four first sealing parts in each row. Alternatively, there may be at least two first sealing parts, or other arrangements.

[0050] The first body may have more than one opening, such as two, three, four, five, six, seven, eight, nine, or at least two. The number of first sealing portions corresponding to each opening is also more than one, such as two, three, four, five, six, seven, eight, nine, etc. The number of interface portions corresponding to each opening may also be at least two. In this embodiment, the number of openings, the number of interface portions, and the number of first sealing portions are the same, such that each opening is liquid-tightly separated from other openings after installation. In other embodiments, the number of openings, the number of interface portions, and the number of first sealing portions may also be different.

[0051] like Figure 4 and Figure 6 As shown, the first body has a mounting surface 24 corresponding to the second mounting surface 31. A receiving groove 21 surrounds a single opening 23. The first body has an inner flange 25 protruding from the bottom of the receiving groove, which can limit the sealing element. The top of the inner flange 25 is a distance D from the plane of the mounting surface 24, which reduces the manufacturing tolerance requirements of the first body, thereby reducing manufacturing costs. If the inner flange is slightly higher than the mounting surface 25 due to manufacturing tolerances, problems will arise when the mounting surface 24 and the second mounting surface 31 need to fit tightly together, thus weakening the sealing effect. Furthermore, as... Figure 7 As shown, since there is a certain gap between the top of the inner flange 25 and the mounting surface 24, the fluid pressure in the flow channel corresponding to the opening 23 can be transmitted into the receiving groove 21 through the gap.

[0052] Figure 9A portion of a fluid device is shown, which can be a valve. The valve includes a housing 4 and an inner cavity 41 located within the housing 4. The housing 4 also has a first body 2 and a plurality of channels 42. One end of each channel 42 is connected to an opening, and the other end of the channel is connected to the inner cavity 41. The channels 42 connect the opening and the inner cavity 41. All openings of the valve can be connected to other parts of the fluid control system at once through the first body 2, which can simplify the installation process, reduce leakage points at the connection points, and increase the reliability of the seal. This fluid device is not limited to a valve; it can also be a pump, heat exchanger, or other device used in a fluid control system. It can also be an integrated component of multiple functional units, such as an integrated component of a heat exchanger and valve, a valve and pump, or a pump and heat exchanger, which can improve the sealing effect.

[0053] like Figure 1 As shown, a fluid assembly may include the aforementioned fluid device and seal 1, and the fluid assembly further includes a second body 3. The first body 2 may be part of the aforementioned valve or other fluid device, and the second body 3 may be part of another fluid device. This fluid assembly is not limited to applications in valves with at least two external interfaces, but can also be applied to other fluid control assemblies or integrations with at least two external interfaces or external interfaces with a large mounting surface, such as heat exchanger-valve integrations, valve-pump integrations, and pump-heat exchanger integrations, which can improve the sealing effect.

Claims

1. A sealing element (1), comprising a main body (15), wherein the sealing element has a first through hole (104), characterized in that, The sealing element also has a first sealing portion (101) corresponding to the first through hole. There are at least two first through holes, and each of the at least two first through holes has a corresponding first sealing portion. The first sealing portion includes a first extension portion (11) and a second extension portion (12). The first extension portion and the second extension portion extend out from the main body portion toward the first through hole, and the maximum distance between the first extension portion and the second extension portion is greater than the height of the main body portion. Along the height direction of the main body portion, the first extension portion forms a closed-loop protrusion structure around the first through hole at one end of the first through hole, and the second extension portion forms a closed-loop protrusion structure around the first through hole at the other end of the first through hole. On the outer periphery of the seal (1), the seal (1) further includes a second sealing portion (102), the second sealing portion (102) including a third extension portion (13) and a fourth extension portion (14), the third extension portion (13) and the fourth extension portion (14) being located on opposite sides of the main body portion (15) in the vertical direction, the third extension portion (13) and the fourth extension portion (14) extending out from the main body portion (15) in a direction away from the main body portion (15), the first extension portion (11) and the third extension portion (13) being located on the same side of the main body portion in the vertical direction, a first groove (17) being formed between the first extension portion and the third extension portion; the second extension portion (12) and the fourth extension portion (14) being located on the same side of the main body portion in the vertical direction, a second groove (18) being formed between the second extension portion and the fourth extension portion, recessed into the main body portion. The seal also has a first inner wall (191) and an outer wall (192) that are laterally opposed, and the seal includes at least two first protrusions (161) that laterally protrude from the first inner wall (191), the distal ends of the first protrusions in the lateral direction extending beyond the distal ends of the first outer extension in the lateral direction. And / or, the seal further includes at least two second protrusions (162) that project laterally out of the outer wall (192), the distal ends of the second protrusions (162) extending laterally beyond the distal ends of the third extension in the lateral direction.

2. The seal as claimed in claim 1, characterized in that, The seal also forms a first inner wall (191) corresponding to the first through hole. The first extension has an inner side (111) and an outer side (112) on its lateral sides. The outer side (112) of the first extension is a part of the first inner wall (191). The first extension is arc-shaped at its distal end away from the main body. The thickness of the distal end of the first extension away from the main body is less than the thickness of the proximal end near the main body. And / or, the second extension has an inner side (111) and an outer side (112) on its lateral sides, the outer side (112) of the second extension being part of the first inner wall (191); the second extension is arc-shaped at its distal end away from the main body; the thickness of the distal end of the second extension away from the main body is less than the thickness of the proximal end near the main body.

3. The seal as described in claim 1, characterized in that, The first and second extension portions are symmetrically arranged in the transverse direction; the portion of the first inner wall near the axis of symmetry is concave towards the outer wall, and the portion of the first inner wall in the main body is arc-shaped; the seal is injection molded from an organic polymer material.

4. The seal as claimed in claim 1, characterized in that, The maximum width of the first extension portion (11) and the second extension portion (12) in the transverse direction is less than the minimum width of the main body portion (15) in the transverse direction, and the cross-sectional length of the first extension portion is greater than 1.4 times its average thickness.

5. The seal as claimed in any one of claims 1-4, characterized in that, Furthermore, the distance between the third extension (13) and the fourth extension (14) is greater than the height of the main body in the vertical direction; the distance between the first extension (11) and the third extension (13) is greater than the width of the main body (15) in the horizontal direction.

6. The seal as claimed in claim 5, characterized in that, The included angle between the first extension portion and the third extension portion ranges from 40° to 100°.

7. The seal as claimed in claim 5, characterized in that, The seal is made of silicone rubber or PTFE.

8. The seal as claimed in claim 6, characterized in that, The third extension portion has the same vertical height as the first extension portion, and the fourth extension portion has the same vertical height as the second extension portion. The first and third extension portions are symmetrically arranged along the vertical direction, and the second and fourth extension portions are symmetrically arranged along the vertical direction. The cross-sections of the first and second grooves are trapezoidal or triangular.

9. The seal as described in any one of claims 1-4 and 6-8, characterized in that, A portion of the seal is located between two adjacent first through holes. The first extension (11) of one first sealing portion and the first extension (11) of the other first sealing portion are located on the same vertical side of the main body, and a first groove (17) is formed between the two first extensions. The second extension (12) of one first sealing portion and the second extension (12) of the other first sealing portion are located on the same vertical side of the main body, and a second groove (18) recessed into the main body is formed between the two second extensions.

10. The seal as claimed in claim 5, characterized in that, A portion of the seal is located between two adjacent first through holes. The first extension (11) of one first sealing portion and the first extension (11) of the other first sealing portion are located on the same vertical side of the main body, and a first groove (17) is formed between the two first extensions. The second extension (12) of one first sealing portion and the second extension (12) of the other first sealing portion are located on the same vertical side of the main body, and a second groove (18) recessed into the main body is formed between the two second extensions.

11. The seal as claimed in any one of claims 1-4, 6-8, and 10, characterized in that, The seal also includes a third sealing portion (103), which includes a fifth extension portion (106) and a sixth extension portion (107). The fifth extension portion and the sixth extension portion are located on opposite sides of the main body portion (15), and the fifth extension portion and the sixth extension portion extend out from the main body portion in a direction away from the main body portion. The fifth extension (106) is located between two adjacent first through holes of the seal, and the fifth extension is located between the first extensions of the two adjacent first through holes, forming a first groove (17) between the fifth extension and the first extension; the sixth extension (107) is located between two adjacent first through holes of the seal, and the sixth extension is located between the second extensions of the two adjacent first through holes, forming a second groove (18) between the fifth extension and the first extension. The seal further includes a second through hole (105), the fifth extension portion forming a portion of the second through hole, the sixth extension portion also forming a portion of the second through hole, the fifth and sixth extension portions extending from the main body portion toward the second through hole, the seal further having a second inner wall (193) corresponding to the second through hole; the seal further includes at least two third protrusions (163) that protrude laterally from the second inner wall (193), the distal ends of the third protrusions (163) in the lateral direction extending beyond the distal ends of the fifth extension portion in the lateral direction.

12. The seal as claimed in claim 9, characterized in that, The seal also includes a third sealing portion (103), which includes a fifth extension portion (106) and a sixth extension portion (107). The fifth extension portion and the sixth extension portion are located on opposite sides of the main body portion (15), and the fifth extension portion and the sixth extension portion extend out from the main body portion in a direction away from the main body portion. The fifth extension (106) is located between two adjacent first through holes of the seal, and the fifth extension is located between the first extensions of the two adjacent first through holes, forming a first groove (17) between the fifth extension and the first extension; the sixth extension (107) is located between two adjacent first through holes of the seal, and the sixth extension is located between the second extensions of the two adjacent first through holes, forming a second groove (18) between the fifth extension and the first extension. The seal further includes a second through hole (105), the fifth extension portion forming a portion of the second through hole, the sixth extension portion also forming a portion of the second through hole, the fifth and sixth extension portions extending from the main body portion toward the second through hole, the seal further having a second inner wall (193) corresponding to the second through hole; the seal further includes at least two third protrusions (163) that protrude laterally from the second inner wall (193), the distal ends of the third protrusions (163) in the lateral direction extending beyond the distal ends of the fifth extension portion in the lateral direction.

13. A fluid device comprising a housing (4); characterized in that, The housing (4) further includes a first body (2), the housing having at least two channels (42) and a receiving groove (21) surrounding the channels, the receiving groove being provided with a seal as described in any one of claims 1-10; the first sealing portion surrounding the channels.

14. The fluid device as claimed in claim 13, characterized in that, The first body (2) has a first mounting surface with a mounting surface (24), and the first body (2) includes a plurality of openings (23), and the receiving groove (21) is recessed in the mounting surface (24) and surrounds a single opening (23). The fluid device also has an inner cavity (41), one end of the channel (42) is connected to an opening, the other end of the channel is connected to the inner cavity (41), and the channel (42) connects the opening and the inner cavity (41). The first body (2) is plate-shaped and has at least two first mounting holes (26) extending through it along the thickness direction of the first body. The at least two first mounting holes are located near the edge of the mounting surface. The receiving groove is a distance from the single opening, and the first body has an inner flange (25) protruding from the bottom of the receiving groove. The inner flange (25) surrounds the single opening and is close to the single opening relative to the receiving groove. The top of the inner flange (25) is a distance from the plane of the mounting surface (24).

15. A fluid assembly comprising a fluid device and a second body, said fluid device including a housing (4); characterized in that, The housing (4) further includes a first body (2), the housing having a channel (42) and a receiving groove (21) surrounding the channel, the receiving groove being provided with a seal as described in any one of claims 1-10; At least two through holes of the seal correspond to the at least two channels (42), and the first sealing portion surrounds the channels; The first body (2) is fixed to the second body (3), and the first body and the second body press against the sealing element (1).

16. The fluid assembly of claim 15, characterized in that, When the seal is in an uncompressed state in the vertical direction, the height of the first extension in the vertical direction is h1, the height of the second extension in the vertical direction is h2, and the overall height of the seal in the vertical direction is a; when the seal is in a state after the first body (2) and the second body (3) are fixed, the overall height of the seal in the vertical direction is b, and h1 + h2 ≥ ab, and the value range of (ab) / a is 0.25~0.

40.

17. The fluid assembly as claimed in claim 15 or 16, characterized in that, The first body (2) has a first mounting surface with a mounting surface (24), and includes at least two openings (23). The receiving groove (21) is recessed into the mounting surface (24) and surrounds a single opening (23). The second body (3) corresponds to the first body (2), and has a second mounting surface (31). The second body (3) includes at least two interface portions (32), which correspond to at least two openings. One end of the channel (42) is connected to one of the openings. The first body (2) is plate-shaped and has at least two first mounting holes (26) extending through it along the thickness direction of the first body. The at least two first mounting holes are located near the edge of the mounting surface. The second body (3) has a second mounting hole (33) corresponding to the first mounting hole (26). The receiving groove is a distance from the single opening, and the first body has an inner flange (25) protruding from the bottom of the receiving groove. The inner flange (25) surrounds the single opening and is close to the single opening relative to the receiving groove. The top of the inner flange (25) is a distance from the plane of the mounting surface (24).

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