Multi-way valve, thermal management system, and vehicle

Abstract

This utility model discloses a multi-way valve, a thermal management system, and a vehicle. The multi-way valve includes a housing, a valve core, and a seal. The housing has an installation cavity and a valve orifice group, comprising m spaced-apart valve orifices, where m is a positive integer and m≥3. The valve core has n circumferentially spaced flow channels, where n is a positive integer and n≥2. The valve core is rotatably mounted in the installation cavity to allow switching between the multiple flow channel groups and the valve orifice groups. The seal is located between the housing and the valve core. The surface of the seal facing the valve core is an arc surface adapted to the outer peripheral wall of the valve core. The central angle corresponding to the arc surface of the seal is α1, where 30°≤α1≤99°. Therefore, by making one side of the seal an arc surface, assembly of the seal is facilitated, and the central angle α1 corresponding to the arc surface is within the range of 30°~99°, ensuring reliable sealing of the multi-way valve while promoting its miniaturization design.

Description

Technical Field

[0001] This utility model relates to the field of control valve technology, and in particular to a multi-way valve, a thermal management system, and a vehicle. Background Technology

[0002] A multi-way valve is a fluid control device that uses the rotation of the valve core within the housing to switch between flow channel groups and valve orifice groups, thereby better controlling the direction and flow rate of the fluid and ensuring the multi-way valve operates efficiently and safely. A seal is usually installed between the valve core and the valve housing inside the multi-way valve to seal the valve core and the valve housing.

[0003] In related technologies, the seal needs to be pre-rolled into a C-shape before being installed into the housing, making the assembly process cumbersome. Furthermore, the seal's shape before and after installation is inconsistent, leading to complex internal stresses and affecting its reliability. This also hinders the miniaturization of multi-way valves. Therefore, the seal structure of multi-way valves needs further improvement. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a multi-way valve, a thermal management system, and a vehicle. The multi-way valve facilitates the assembly of the seal by setting one side of the seal as an arc surface, and the central angle α1 corresponding to the arc surface is in the range of 30° to 99°, which ensures reliable sealing of the multi-way valve while promoting the miniaturization design of the multi-way valve.

[0005] According to a first aspect of the present invention, a multi-way valve includes a housing, a valve core, and a seal. The housing has an installation cavity, and a valve orifice group is provided on the housing. The valve orifice group includes m spaced-apart valve orifices, where m is a positive integer and m≥3. The valve core has n circumferentially spaced flow channels, where n is a positive integer and n≥2. The valve core is rotatably disposed in the installation cavity to allow switching communication between the multiple flow channel groups and the valve orifice groups. The seal is disposed between the housing and the valve core, and the seal has multiple clearance through holes, which correspond one-to-one with the valve orifices. The surface of the seal facing the valve core is an arc surface adapted to the outer peripheral wall of the valve core, and the central angle corresponding to the arc surface of the seal is α1, where 30°≤α1≤99°.

[0006] According to the multi-way valve of this utility model embodiment, the surface of the sealing element facing the valve core is an arc surface that matches the outer wall surface of the valve core. This eliminates the need for pre-rolling of the sealing element during assembly, improving the assembly efficiency of the sealing element. Furthermore, the central angle α1 of the arc surface of the sealing element is within the range of 30° to 99°, and the contact area between the sealing element and the housing and valve core is reasonably optimized, resulting in good sealing performance of the sealing element. At the same time, the sealing element will not be too large to affect the switching of the flow channel group, which facilitates the miniaturization design of the multi-way valve.

[0007] In some embodiments, the valve hole group includes p rows of valve holes spaced circumferentially, each row of valve holes including a plurality of valve holes spaced axially, where p is a positive integer and 2≤p≤3, m≥6, and n≥3.

[0008] In some embodiments, 50°≤α1≤80°.

[0009] In some embodiments, the arc surface of the seal is divided into a plurality of first sealing portions spaced apart circumferentially by the avoidance through hole, and the central angle corresponding to the first sealing portion is α2, 5°≤α2≤15°.

[0010] In some embodiments, the arcuate surface of the seal is divided by a through hole into a plurality of second sealing portions spaced apart along the axial direction, the axial length of the second sealing portion being equivalent to the circumferential length of the first sealing portion.

[0011] In some embodiments, the seal is an integral arc-shaped component, and the central angles corresponding to the two ends of the seal in the circumferential direction are α3, α3>α1, 60°≤α3≤150°.

[0012] In some embodiments, α3 ≤ 90°.

[0013] In some embodiments, the two circumferential ends of the seal are correspondingly spaced from the two circumferential ends of the arc surface. A first limiting groove is formed on the circumferential wall of the mounting cavity. A valve hole assembly is formed on the bottom wall of the first limiting groove. The seal is circumferentially positioned and fitted into the first limiting groove. The two circumferential side walls of the first limiting groove extend radially from the outside to the inside toward each other. The two circumferential ends of the seal each have a mating part. The radially inner surfaces of the two mating parts extend radially from the outside to the inside toward each other and are respectively connected to the two circumferential ends of the arc surface of the seal.

[0014] In some embodiments, the angle between each of the two circumferential walls of the first limiting groove and the circumferential direction at its location is α4, where 10°≤α4<90°.

[0015] In some embodiments, at least a portion of the wall of the bypass through hole is formed as a first cylindrical surface, and at least a portion of the wall of the valve hole is formed as a second cylindrical surface, wherein the axial direction of the first cylindrical surface is parallel to the axial direction of the second cylindrical surface.

[0016] In some embodiments, the seal includes a body and a rib structure. The rib structure protrudes from the side of the body away from the valve core. A clearance through hole is formed on the body. The rib structure defines a plurality of sealing rings. The plurality of sealing rings are arranged in a one-to-one correspondence with the plurality of clearance through holes, and each sealing ring is arranged around the corresponding clearance through hole.

[0017] In some embodiments, the rib structure includes a plurality of ribs, the surface of the plurality of ribs facing away from the valve core being an arc surface, the plurality of ribs including a plurality of first ribs and a plurality of second ribs, the plurality of first ribs being spaced apart circumferentially, each first rib extending axially to both ends of the body, the plurality of second ribs corresponding to the valve hole row being spaced apart axially, each second rib extending circumferentially, the intersecting first ribs and second ribs defining a sealing ring, the plurality of second ribs being provided between two adjacent valve holes of the valve hole row, at least two adjacent second ribs located between two adjacent valve holes of the valve hole row being connected by reinforcing ribs, and the reinforcing ribs being spaced apart from the circumferential ends of the second ribs respectively; and / or, the plurality of first ribs being provided between two corresponding valve holes of two adjacent rows of valve hole rows, two of the plurality of first ribs located between two corresponding valve holes of two adjacent rows of valve hole rows defining a second limiting groove, the second limiting groove being in circumferential limiting engagement with the limiting ribs on the inner wall of the housing.

[0018] In some embodiments, the valve core includes a shaft portion and a core portion. The core portion is disposed around the outer periphery of the shaft portion. Multiple sets of flow channels are formed on the core portion. The axial ends of the shaft portion are rotatably engaged with the housing. A through hole is formed on the core portion that passes through it axially. The through holes are spaced between two adjacent sets of flow channels.

[0019] In some embodiments, the outer peripheral wall of the core portion has multiple closed regions, which are spaced apart from the flow channel groups. At least one flow channel group corresponds to a closed region. The closed region is adapted to close the corresponding valve hole when the corresponding flow channel group is connected to the valve hole group. A groove is formed at the closed region, and the groove opening is formed on the outer peripheral wall of the core portion. The multiple grooves include: a first groove, the depth of which is less than half of the radial dimension of the flow channel group, and the core portion also forms a cavity located inside the first groove in the radial direction of the valve core; and / or, a second groove, the depth of which is greater than half of the radial dimension of the flow channel group.

[0020] In some embodiments, the core portion is formed with a cavity that communicates with one of the channels in the channel assembly; and / or, the cavity communicates with a through hole adjacent to it.

[0021] In some embodiments, the multi-way valve is configured to satisfy at least one of the following conditions:

[0022] Condition A1: The core part includes a first part and a second part. The first part is arranged around the outer periphery of the shaft part at intervals, and a flow channel assembly is formed on the first part. The second part is connected between the shaft part and the first part, and the axial length of the second part is less than the axial length of the first part.

[0023] Condition A2: The first cavity and the second cavity are defined between the two axial end faces of the core and the inner wall of the mounting cavity, respectively. The flow channel group includes a plurality of spaced flow channels. In at least one flow channel group, one of the plurality of flow channels penetrates the corresponding axial end face of the core to communicate with the first cavity or the second cavity.

[0024] Condition A3: The valve orifice group includes multiple rows of valve orifice rows spaced apart circumferentially, each row of valve orifice rows includes at least one valve orifice, and at least one flow channel group includes a first flow channel orifice spaced apart circumferentially, the first flow channel orifice being adapted to communicate with a corresponding valve orifice, and the circumferential interval between adjacent flow channel groups is greater than the circumferential interval between adjacent first flow channel orifices.

[0025] A thermal management system according to a second aspect of the present invention includes a multi-way valve according to a first aspect of the present invention.

[0026] According to the embodiment of the present invention, the thermal management system adopts the above-mentioned multi-way valve, which facilitates the improvement of the assembly efficiency of the thermal management system.

[0027] A vehicle according to a third aspect of the present invention includes a multi-way valve according to a first aspect of the present invention or a thermal management system according to a second aspect of the present invention.

[0028] According to the embodiments of the present invention, the thermal management system, by employing the above-described multi-way valve or thermal management system, facilitates the improvement of the assembly efficiency of the thermal management system.

[0029] Additional aspects and advantages of this 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

[0030] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0031] Figure 1 This is a schematic diagram of a multi-way valve according to some embodiments of the present invention;

[0032] Figure 2 yes Figure 1 A magnified view of the area circled in the image;

[0033] Figure 3 yes Figure 1 The diagram shows an assembly of the housing and seals.

[0034] Figure 4 yes Figure 1 A schematic diagram of the seal shown;

[0035] Figure 5 yes Figure 1 A cross-sectional view of the multi-way valve shown;

[0036] Figure 6 yes Figure 5 A magnified view of the area circled in the image;

[0037] Figure 7 yes Figure 1 The diagram shows a valve core; the dashed lines in the diagram are only used to indicate the separation between the two sets of flow channels.

[0038] Figure 8 yes Figure 7 Another schematic diagram of the valve core shown, in which the bold solid lines are used to indicate the peripheral wall of the through hole;

[0039] Figure 9 yes Figure 7 The cross-sectional view of the valve core shown;

[0040] Figure 10 yes Figure 7 Another schematic diagram of the valve core shown;

[0041] Figure 11 yes Figure 7 Another cross-sectional view of the valve core shown;

[0042] Figure 12 yes Figure 1 Another cross-sectional view of the multi-way valve shown;

[0043] Figure 13 yes Figure 1 An exploded view of the multi-way valve shown in the image;

[0044] Figure 14 yes Figure 1 Another exploded view of the multi-way valve shown;

[0045] Figure 15 yes Figure 1 A schematic diagram of the casing shown;

[0046] Figure 16 yes Figure 7 Another schematic diagram of the valve core shown; the dashed lines in the diagram are only used to indicate the separation of the two sets of flow channels.

[0047] Figure 17 This is a schematic diagram of a vehicle according to some embodiments of the present invention.

[0048] Figure label:

[0049] Vehicle 3000, thermal management system 2000, multi-way valve 1000, housing 100, mounting cavity 120, first limiting groove 122, limiting rib 124, valve hole assembly 140, valve hole 142, valve hole row 144, first cavity 150, second cavity 160, valve core 200, flow channel assembly 220, flow channel 222, first flow channel opening 224, shaft body 240, core body 260, through hole 262, closed area 264, groove 265, first Groove 265a, second groove 265b, cavity 266, first part 267, second part 268, sealing element 300, clearance through hole 310, first cylindrical surface 312, second cylindrical surface 314, arc surface 320, first sealing part 330, second sealing part 340, mating part 350, body 360, rib structure 370, sealing ring 372, first rib 374, second limiting groove 374a, second rib 376, reinforcing rib 378. Detailed Implementation

[0050] The embodiments of this utility model 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 this utility model, and should not be construed as limiting this utility model.

[0051] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0052] In the description of the embodiments of this application, the term "and / or" is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0053] Hereinafter, with reference to the accompanying drawings, a multi-way valve 1000 according to a first aspect embodiment of the present invention will be described.

[0054] like Figure 1 and Figure 3As shown, the multi-way valve 1000 according to the first aspect of the present invention includes a housing 100, a valve core 200, and a sealing element 300. The housing 100 has a mounting cavity 120 formed therein, and a valve hole group 140 is provided on the housing 100. The valve hole group 140 includes m spaced valve holes 142, where m is a positive integer and m≥3. The valve core 200 has n groups of circumferentially spaced flow channels 220, where n is a positive integer and n≥2. The valve core 200 is rotatably disposed in the mounting cavity 1000. 20, so that multiple flow channel groups 220 can switch and connect with valve hole group 140. The sealing element 300 is provided between the housing 100 and the valve core 200, and multiple clearance through holes 310 are formed on the sealing element 300. The clearance through holes 310 are connected to the valve holes 142 one by one. The side surface of the sealing element 300 facing the valve core 200 is an arc surface 320 that is adapted to the outer peripheral wall of the valve core 200. The central angle corresponding to the arc surface 320 of the sealing element 300 is α1, 30°≤α1≤99°.

[0055] It can be understood that the valve core 200 has a rotation axis L1. The extension direction of the rotation axis L1 is the axial direction of the valve core 200, the axial direction of the multi-way valve 1000, and the axial direction of the seal 300. The direction around the rotation axis L1 is the circumferential direction of the valve core 200, the circumferential direction of the multi-way valve 1000, and the circumferential direction of the seal 300. In the radial plane, the direction passing through the rotation axis L1 is the radial direction of the valve core 200, the radial direction of the multi-way valve 1000, and the circumferential direction of the seal 300. The radial plane is perpendicular to the rotation axis L1.

[0056] As can be seen, a mounting cavity 120 is formed inside the housing 100, and the valve core 200 is rotatably disposed in the mounting cavity 120. By rotating the valve core 200, multiple sets of flow channel groups 220 and valve hole groups 140 can be switched and connected. Thus, the multi-way valve 1000 can have n different working modes, thereby realizing the control of the fluid medium by the multi-way valve 1000. The fluid medium can enter the interior of the housing 100 from the valve hole group 140 and the corresponding flow channel group 220, and flow out from the interior of the housing 100 through the flow channel group 220 and the corresponding valve hole group 140. The fluid medium can be water, antifreeze or other fluids, which are not limited here.

[0057] The sealing element 300 is disposed between the housing 100 and the valve core 200. The surface of the sealing element 300 facing the valve core 200 is an arc surface 320 that is adapted to the outer wall surface of the valve core 200. This allows the sealing element 300 to be directly assembled with the housing 100 without pre-rolling the sealing element 300 before assembly, simplifying the assembly process of the sealing element 300. Furthermore, the arc surface 320 makes the fit between the sealing element 300 and the valve core 200 tighter, which helps to reduce the sealing gap that may occur between the valve core 200 and the sealing element 300 during rotation, thereby improving the sealing performance of the sealing element 300.

[0058] It is understandable that on the cross-section of the multi-way valve 100 (the cross-section is perpendicular to the rotation axis L1), with the orthographic projection of the rotation axis L1 as the center O, the central angle corresponding to the two ends of the arc surface 320 in the circumferential direction is α1. When the central angle corresponding to the arc surface 320 of the seal 300 is too small (for example, α1 < 30°), the contact area between the seal 300 and the valve core 200 and the housing 100 is correspondingly reduced, which can easily lead to incomplete sealing of the seal 300, increasing the risk of fluid medium leakage. Moreover, the number of valve holes 142 is easily limited. At the same time, an excessively small central angle may also make the seal 300 more prone to deformation or damage under pressure, thereby affecting the sealing performance of the seal 300. If the central angle corresponding to the 300 arc surface 320 is too large (e.g., α1 > 99°), although the contact area between the seal 300 and the valve core 200 and the housing 100 is increased, the seal 300 occupies a larger area in the circumferential direction of the housing 100 and the valve core 200. The seal 300 is easily driven to curl under the rotation of the valve core 200, which affects the switching of the flow channel group 220 on the valve core 200. It also easily limits or reduces the circumferential arrangement area and number of the flow channel group 220 in the valve core 200.

[0059] The central angle corresponding to the arc surface 320 of the seal 300 is α1, 30°≤α1≤99°. For example, α1 can be 30°, 32°, 38°, 40°, 44°, 50°, 56°, 59°, 60°, 62°, 67°, 70°, 73°, 75°, 80°, 85°, 96°, 99°, etc.

[0060] In this embodiment, by setting the surface of the sealing element 300 facing the valve core 200 as an arc surface 320 adapted to the outer peripheral wall of the valve core 200, it is easy to ensure that the sealing element 300 and the valve core 200 always maintain a good seal, and it is not necessary to pre-roll the sealing element 300, which facilitates assembly; moreover, the central angle α1 of the arc surface 320 of the sealing element 300 is set in the range of 30° to 99°, so that the space occupied by the sealing element 300 in the circumferential direction is not too small, and the arrangement of the multiple valve holes 142 and the opening of the valve holes 142 are also considered. The size and other requirements are relatively high. The area occupied by the seal 300 in the circumferential direction will not be too large. Under the premise of facilitating the arrangement of different numbers of valve holes 142 in the valve hole group 140, it is not easy to impose excessive restrictions on the number of flow channel group 220. This is conducive to enriching the working modes of the multi-way valve 1000. Moreover, it is not easy to be curled under the action of the valve core 200, so that the seal 300 has a good sealing effect. At the same time, the seal 300 will not affect the switching of the flow channel group 220, which facilitates the miniaturization design of the multi-way valve 1000.

[0061] As can be seen, the above-mentioned arrangement of the arc surface 320 of the seal 300 facilitates the consideration of multiple aspects such as the arrangement of multiple valve holes 142, the opening size of valve holes 142, the number of flow channel groups 220, the bending stiffness of the seal 300, the assembly of the seal 300, and miniaturization design.

[0062] like Figure 1 , Figure 13 and Figure 14 As shown, in some embodiments, the valve hole group 140 includes p rows of valve hole rows 144 spaced circumferentially, each row of valve hole rows 144 including a plurality of valve holes 142 spaced axially, where p is a positive integer and 2≤p≤3, m≥6, and n≥3.

[0063] As can be seen, the valve hole group 140 includes p rows of valve holes 144 arranged circumferentially, where p is a positive integer and 2≤p≤3; the valve hole group 140 includes m valve holes 142 arranged at intervals, where m is a positive integer and m≥6; and the valve core 200 has n groups of flow channels 220 arranged circumferentially, where n is a positive integer and n≥3.

[0064] For example, when p is 2, m is 6, and n is 3, the valve orifice group 140 includes two rows of valve orifice rows 144 spaced circumferentially, each row of valve orifice rows 144 includes three valve orifices 142 spaced axially, the valve core 200 has three groups of flow channels 220 spaced circumferentially, and the multi-port valve 1000 can be a six-port valve; for example, as... Figure 14 As shown, when p is 2, m is 7, and n is 4, the valve orifice group 140 includes two rows of valve orifice rows 144 spaced circumferentially, one row of valve orifice rows 144 includes four valve orifices 142 spaced axially, and the other row includes three valve orifices 142 spaced axially. The valve core 200 has four groups of flow channels 220 spaced circumferentially, and the multi-port valve 1000 can be a seven-port valve. For example, when p is 3, m is 8, and n is 4, the valve orifice row 144 includes three rows of valve orifice rows 144 spaced circumferentially, one row of valve orifice rows 144 includes two valve orifices 142 spaced axially, and the other two rows include three valve orifices 142 spaced axially. The valve core 200 has four groups of flow channels 220 spaced circumferentially, and the multi-port valve 1000 can be an eight-port valve. For another example, such as... Figure 13 As shown, p is 2, m is 8, n is 4, the valve hole group 140 includes two rows of valve hole rows 144 spaced apart along the circumference, each row of valve hole rows 144 includes four valve holes 142 spaced apart along the axial direction, the valve core 200 has four groups of flow channels 220 spaced apart along the circumference, and the multi-way valve 1000 can be an eight-way valve.

[0065] It is understandable that p can be 2 or 3, representing the number of valve orifice rows 144. Users can increase the number of valve orifice rows 144 to provide more fluid channels according to actual needs; m represents the total number of valve orifices 142, and m should be greater than or equal to 6. By increasing the number of valve orifices 142 per row, the number of fluid channels can be increased; n represents the number of flow channel groups 220 on valve core 200, and n should be greater than or equal to 3 to achieve flexible fluid control.

[0066] Users can select appropriate values ​​for p, m, and n based on the specific needs of the fluid control system. Through proper selection and configuration, precise fluid control and efficient fluid distribution can be achieved. For example, if more fluid channels are needed, the value of m can be increased; if more complex fluid control logic is required, the value of n can be increased.

[0067] like Figure 3 and Figure 4 As shown, in some embodiments, 50°≤α1≤80°, for example, α1 is 50°, 65°, 70°, 74°, 80°, etc. This allows the seal 300 to be better suited to the condition of "2≤p≤3, m≥6, n≥3", achieving a better match between the seal 300, valve port row 144, and flow channel group 220. Consequently, the central angle of the arc surface 320 of the seal 300, the number of valve port rows 144, the arrangement and number of valve ports 142, and the number of flow channel groups 220 are more compatible with each other, simplifying the design of the multi-way valve 1000.

[0068] like Figure 3 and Figure 4 As shown, in some embodiments, the arc surface 320 of the seal 300 is divided by the clearance through hole 310 into a plurality of circumferentially spaced first sealing portions 330, with the central angle corresponding to the first sealing portion 330 being α2, where 5°≤α2≤15°. It can be seen that by providing multiple first sealing portions 330, each first sealing portion 330 can independently perform a sealing function. Each clearance through hole 310 has first sealing portions 330 on both circumferential sides. Therefore, even if one of the first sealing portions 330 has a minor defect or wear, the other first sealing portions 330 can still continue to work, jointly preventing leakage of the fluid medium and significantly reducing the possibility of fluid medium leakage.

[0069] It is understandable that the central angle corresponding to the first sealing part 330 is α2, where 5°≤α2≤15°. When the central angle of the first sealing part 330 is too small (e.g., α2<5°), the contact area between the first sealing part 330 and the valve core 200 or the housing 100 will be reduced accordingly, which may result in the sealing part failing to form an effective sealing barrier, thereby increasing the risk of fluid medium leakage. Alternatively, a larger sealing surface pressure may be required, placing higher stress requirements on the sealing element 300. On the other hand, if the central angle of the first sealing part 330 is too large (e.g., α2>15°), the contact area between the first sealing part 330 and the valve core 200 or the housing 100 will be increased accordingly, improving the sealing performance of the first sealing part 330. However, this will limit the circumferential arrangement space of the avoidance through hole 310 on the sealing element 300, which may restrict the opening size of the valve hole 142.

[0070] By setting the central angle of the first sealing part 330 in the range of 5° to 15°, the contact area between the first sealing part 330 and the valve core 200 or the housing 100 is moderate, which can form an effective sealing barrier and does not restrict the arrangement space of the avoidance through hole 310 in the circumferential direction, making the arrangement position of the avoidance through hole 310 more flexible, for example, α2 is 5°, 8°, 10°, 13°, 15°, etc.

[0071] like Figure 3 , Figure 4 and Figure 13 As shown, in some embodiments, the arcuate surface 320 of the seal 300 is divided by the through hole 310 into a plurality of second sealing portions 340 spaced apart along the axial direction, the axial length of the second sealing portion 340 (e.g., Figure 13 L2) and the circumferential length of the first sealing part 330 (e.g., L2) Figure 13 It is equivalent to L3 in the middle.

[0072] As can be seen, by setting multiple second sealing parts 340, multi-layer sealing is achieved, which helps reduce the possibility of axial leakage of the fluid medium. Each second sealing part 340 can independently perform a sealing function. Even if one second sealing part 340 fails due to wear or damage, the others can still continue to work, ensuring the sealing performance of the seal 300. In addition, the axial length of the second sealing part 340 is comparable to the circumferential length of the first sealing part 330, so that the first sealing part 330 and the second sealing part 340 can cross in the axial and circumferential directions to form a mesh structure. The mesh structure allows the seal 300 to provide an effective sealing barrier in both the axial and circumferential directions, improving the sealing performance of the seal 300, reducing the risk of fluid medium leakage, and minimizing material waste, thus maximizing the sealing performance of the seal 300.

[0073] It is understandable that the circumferential length of the first sealing part 330 and the axial length of the second sealing part 340 can be equal or have a small difference, such as a difference of no more than 5 mm.

[0074] like Figure 3 and Figure 4 As shown, in some embodiments, the seal 300 is an integral arc-shaped part. Therefore, the seal 300 is a one-piece molded part, and its arc-shaped structure facilitates its processing, ensures reliable installation, and allows for a tighter fit between the seal 300 and the inner circumferential wall of the mounting cavity 120 and the outer circumferential wall of the valve core 200, while also accommodating the rotation of the valve core 200. The central angles corresponding to the two circumferential ends of the seal 300 are α3, where α3 > α1 and 60° ≤ α3 ≤ 150°. When the central angle α3 is too small (α3 < 60°), the contact area between the seal 300 and the valve body and housing 100 will decrease accordingly, potentially leading to incomplete sealing and increasing the risk of leakage. Furthermore, the valve orifice... The number of 142 is easily limited. When the central angle α3 is too large (α3 > 150°), the seal 300 will affect the switching of the flow channel group 220 on the valve core 200, thereby limiting or reducing the circumferential arrangement area and number of the flow channel group 220 in the valve core 200. Within the range of 60° to 150°, the contact area between the seal 300 and the valve core 200 or the housing 100 is reasonably optimized, which can make the seal 300 have a good sealing effect, and the seal 300 will not affect the switching of the flow channel group 220, thus improving the working efficiency of the multi-way valve 1000. For example, α3 can be 60°, 70°, 74°, 82°, 90°, 110°, 120°, 135°, 150°, etc.

[0075] It can be understood that if α3 > α1, then at least one of the two circumferential ends of the seal 300 has a portion that does not cooperate with the valve core 200 (e.g., the mating portion 350 described later). When a first limiting groove 265 is formed on the peripheral wall of the mounting cavity 120, the above-mentioned portion of the seal 300 can be easily mated with the first limiting groove 265 to limit the seal 300. At the same time, the above-mentioned installation of the seal 300 is less likely to affect the mating between the arc surface 320 and the valve core 200.

[0076] like Figure 3 and Figure 4As shown, in some embodiments, α3≤90°, then 60°≤α3≤90°. By setting the central angles corresponding to the two circumferential ends of the seal 300 within the range of 60° to 90°, sufficient circumferential space is provided for the arc surface 320. This ensures that the arc surface 320 and the valve core 200 can still maintain a tight fit when the seal 300 is affected by external factors such as fluid pressure, temperature changes, or vibration, reducing the possibility of fluid leakage. Moreover, setting α3 to less than or equal to 90° ensures that the circumferential size occupied by the seal 300 is not too large, thus not affecting the switching of the flow channel group 220 on the valve core 200. This helps the flow channel group 220 in the valve core 200 to be arranged and switched more freely, improving the working efficiency of the multi-way valve 1000. For example, α3 can be 60°, 65°, 72°, 78°, 83°, 88°, 90°, etc.

[0077] like Figure 3 and Figure 5 As shown, in some embodiments, the two circumferential ends of the seal 300 are correspondingly spaced from the two circumferential ends of the arc surface 320. A first limiting groove 265 is formed on the peripheral wall of the mounting cavity 120. The first limiting groove 265 can be formed by a portion of the inner peripheral wall of the mounting cavity 120 recessed radially outward. The valve hole assembly 140 is formed on the bottom wall of the first limiting groove 265. The seal 300 is circumferentially positioned and fitted into the first limiting groove 265. Then, the two side walls of the seal 300 in the circumferential direction respectively abut against the corresponding side groove walls of the first limiting groove 265. Thus, the first limiting groove 265 provides a tighter and more stable support environment for the seal 300, which can effectively reduce the possibility of displacement of the seal 300 in the circumferential direction, thereby improving the sealing effect of the seal 300.

[0078] The two circumferential walls of the first limiting groove 265 extend radially from the outside to the inside toward each other. The two circumferential ends of the sealing member 300 have mating parts 350. The radial inner surfaces of the two mating parts 350 extend radially from the outside to the inside toward each other. The radial inner surfaces of the two mating parts 350 are respectively connected to the two circumferential ends of the arc surface 320 of the sealing member 300.

[0079] As can be seen, the circumferential side walls of the first limiting groove 265 extend radially from the outside to the inside towards each other, causing the circumferential width of the first limiting groove 265 to decrease radially from the outside to the inside. The radial inner surfaces of the two mating parts 350 extend radially from the outside to the inside towards each other, causing the radial thickness of the mating parts 350 to decrease radially from the outside to the inside. Thus, the mating parts 350 and the first limiting groove 265 form a tapered mating structure in the circumferential direction, allowing the seal 300 to be more tightly compressed within the first limiting groove 265 during installation. This is beneficial for enhancing the circumferential limiting effect of the first limiting groove 265 on the seal 300, and also facilitates the first limiting groove 265 to play a certain radial limiting role on the seal 300, thereby further improving the stability of the seal 300's installation position.

[0080] For example, the circumferential walls of the first limiting groove 265 gradually converge from the outside to the inside in the radial direction, which helps to improve the stability of the fit between the mating part 350 and the first limiting groove 265. When the seal 300 is subjected to external pressure or load, this cohesive tendency between the groove walls helps to disperse stress and effectively reduces the possibility of structural deformation or damage to the seal 300. It should be noted that the direction "outside" is the direction radially away from the rotation axis L1 of the valve core 200, and its opposite direction is defined as "inside".

[0081] like Figure 3 and Figure 5 As shown, in some embodiments, the included angle between each of the two circumferential walls of the first limiting groove 265 and the circumferential direction at its location is α4, where 10°≤α4<90°. By setting the included angle between each of the two circumferential walls of the first limiting groove 265 and the circumferential direction at its location within the range of 10° to 90°, the second limiting groove 374a can be facilitated while enhancing the limiting effect of the first limiting groove 265 on the seal 300. In other words, α4 should not be too large, which would cause the second limiting groove 374a to easily fail in limiting the seal 300, and α4 should not be too small, which would increase the difficulty of the second limiting groove 374a. For example, α4 can be 10°, 15°, 20°, 23°, 28°, 30°, 32°, 38°, 40°, 44°, 50°, 56°, 59°, 60°, 62°, 67°, 70°, 73°, 75°, 80°, 85°, 90°, etc.

[0082] like Figure 5 and Figure 6 As shown, in some embodiments, at least a portion of the wall of the bypass through hole 310 is formed as a first cylindrical surface 312, and at least a portion of the wall of the valve hole 142 is formed as a second cylindrical surface 314, with the axial direction of the first cylindrical surface 312 parallel to the axial direction of the second cylindrical surface 314.

[0083] As can be seen, when the fluid medium flows from the clearance through hole 310 to the valve core 200, the first cylindrical surface 312 formed by the hole wall of the clearance through hole 310 and the second cylindrical surface 314 formed by the hole wall of the valve hole 142 are parallel. The parallel design of the first cylindrical surface 312 and the second cylindrical surface 314 helps to reduce the resistance of the fluid medium when passing through the clearance through hole 310 and the valve hole 142, which is beneficial to reduce the generation of eddies and turbulence, so that the fluid medium can pass through the clearance through hole 310 and the valve hole 142 more smoothly; at the same time, it is convenient to process and form the first cylindrical surface 312 and the second cylindrical surface 314.

[0084] For example, the axial direction of the second cylindrical surface 314 is perpendicular to the end face of the housing 100, which simplifies the structure of the valve hole 142 and the avoidance through hole 310. The end face of the housing 100 is the docking end face of the housing 100 with other external pipelines, which are docked with the valve hole group 140.

[0085] like Figures 3-5 As shown, in some embodiments, the seal 300 includes a body 360 and a rib structure 370. The rib structure 370 protrudes from the side of the body 360 away from the valve core 200. A clearance through hole 310 is formed on the body 360. The rib structure 370 defines a plurality of sealing rings 372. The plurality of sealing rings 372 are arranged in a one-to-one correspondence with the plurality of clearance through holes 310, and each sealing ring 372 is arranged around the corresponding clearance through hole 310.

[0086] As can be seen, the rib structure 370 protrudes from the side of the body 360 away from the valve core 200, increasing the thickness and strength of the seal 300 and improving its resistance to deformation. For example, when the multi-way valve 1000 is assembled, after the seal 300 is in place, the valve core 200 compresses the seal 300 against the inner circumferential wall of the mounting cavity 120, so that the rib structure 370 elastically presses against the inner circumferential wall of the mounting cavity 120. By setting the rib structure 370, the reaction force after the seal 300 is compressed can be increased, increasing the seal 300's resistance to compression deformation and improving the problem of sealing performance degradation caused by sealing gaps, thereby further increasing the reliability of the seal.

[0087] The sealing ring 372 is arranged around the corresponding clearance through hole 310, so that each clearance through hole 310 has a tight sealing structure, and each clearance through hole 310 is sealed. That is, the connection between the valve core 200 and the housing 100 can be sealed individually, thereby enhancing the sealing performance and preventing the sealing failure of a single clearance through hole 310 from affecting the sealing performance of other positions.

[0088] like Figures 4-6As shown, in some embodiments, the rib structure 370 includes multiple ribs, and the surface of the multiple ribs facing away from the valve core 200 is an arc surface. The arc surface is adapted to match the cross-sectional shape of the inner peripheral wall of the mounting cavity 120, so that the seal 300 can fit more tightly with the inner peripheral wall of the mounting cavity 120, which facilitates the improvement of the sealing performance of the seal 300. Moreover, when the seal 300 is an integral injection molded part, the arc surface also facilitates the demolding of the seal 300, which facilitates the improvement of the processing efficiency of the seal 300. The multiple ribs include multiple first ribs 374 and multiple second ribs 376. The multiple first ribs 374 are arranged circumferentially, and each first rib 374 extends axially. Extending to both ends of the body 360, for example, the two ends of the length of the first rib 374 are flush with the two ends of the axial direction of the body 360. Multiple second ribs 376 corresponding to the valve hole row 144 are arranged at intervals along the axial direction. Each second rib 376 extends circumferentially. The intersecting first ribs 374 and second ribs 376 define the sealing ring 372, which simplifies the forming of the sealing ring 372. The sealing ring 372 defined by the intersection of the first ribs 374 and the second ribs 376 forms a stable grid structure. This structure can significantly improve the strength and rigidity of the sealing ring 372, enabling the sealing ring 372 to withstand greater pressure, thereby improving the sealing effect of the sealing ring 372.

[0089] In this design, multiple second ribs 376 are provided between two adjacent valve holes 142 of the valve hole row 144. At least two adjacent second ribs 376 located between two adjacent valve holes 142 of the valve hole row 144 are connected by reinforcing ribs 378. The reinforcing ribs 378 and the two circumferential ends of the second ribs 376 are spaced apart. The reinforcing ribs 378 connect between two adjacent second ribs 376, significantly improving the local strength and structural rigidity between two adjacent sealing rings 372, and helping to reduce the impact of fluid pressure or external mechanical stress. This reduces the possibility of deformation or damage to the sealing ring 372, improving the operational stability of the multi-way valve 1000; and / or, multiple first ribs 374 are provided between corresponding two valve holes 142 of adjacent rows of valve hole rows 144, and a second limiting groove 374a is defined between two of the multiple first ribs 374 located between corresponding two valve holes 142 of adjacent rows of valve hole rows 144. The first ribs 374 are provided to protrude from the body 360, directly utilizing the space between two first ribs 374 between adjacent rows of valve hole rows 144 to define the second limiting groove 374a. The second limiting groove 374a eliminates the need for additional machining of other structures on the seal 300, facilitating further structural simplification and manufacturing. Furthermore, the second limiting groove 374a engages circumferentially with the limiting rib 124 on the inner wall of the housing 100, enhancing the circumferential limiting reliability of the seal 300. This reduces the circumferential displacement of the seal 300 caused by rotation with the valve core 200, thereby improving the reliability of the seal's position and ultimately enhancing sealing reliability. In other words, through the limiting rib 124 and the second limiting groove 374a... The engagement of the two limiting grooves 374a ensures that the seal 300 remains in a preset position between the housing 100 and the valve core 200 even when subjected to the frictional force applied by the rotation of the valve core 200. This improves the sealing performance of the seal 300, effectively reduces the possibility of fluid leakage and cross-flow, and enhances the stability of the multi-way valve 1000 during operation. Furthermore, since the seal 300 can maintain a stable position, the multi-way valve 1000 does not require frequent adjustment of the seal 300's position during maintenance, thus simplifying maintenance operations.

[0090] like Figures 7-11 As shown, in some embodiments, the valve core 200 includes a shaft portion 240 and a core portion 260. The core portion 260 is disposed around the outer periphery of the shaft portion 240, and multiple sets of flow channel groups 220 are formed on the core portion 260. The two axial ends of the shaft portion 240 are rotatably engaged with the housing 100, thereby realizing the switching of the multi-way valve 1000 between different communication states. A through hole 262 is also formed on the core portion 260, extending axially through it, and the through holes 262 are spaced apart between two adjacent sets of flow channel groups 220.

[0091] It is evident that the through-hole 262 can appropriately reduce the local wall thickness of the core 260 between two adjacent flow channel groups 220, making it more suitable for scenarios where multiple flow channel groups 220 occupy space flexibly in the circumferential direction. For example, in order to better match the control strategy of the multi-way valve 1000 (such as the valve core 200 rotating from the initial zero position to a suitable angle to switch to the corresponding connected state) and adapt to processing requirements, multiple flow channel groups 220 are set at non-equal intervals in the circumferential direction. The through-hole 262 is more conducive to achieving the uniform thickness design of the core 260, making the wall thickness of the flow channel group 220 more uniform. This effectively reduces the internal stress and deformation problems that may occur in the valve core 200 during manufacturing due to uneven wall thickness, thereby improving the production efficiency and product quality of the valve core 200. The through-hole 262 reduces the limitations of the circumferential layout of multiple flow channel groups 220, improves the internal stress of the valve core 200, reduces stress concentration, and simplifies machining. Furthermore, it facilitates the improvement of the overall structural consistency of the valve core 200 in terms of strength and rigidity, reducing the likelihood of weak areas in any location and thus improving the overall performance of the valve core 200. Moreover, the through-hole 262 penetrates both axial ends of the core portion 260, making its machining convenient and less restrictive on the machining of the valve core 200. In addition, the through-hole 262 helps reduce the amount of material used in the valve core 200, lightens its weight, and reduces the energy consumption required to drive the valve core 200's rotation.

[0092] For example, if the valve core is a one-piece injection molded part, and the wall thickness of the valve core varies greatly at different locations during the injection molding process, the shrinkage rate of different parts will differ during cooling and curing. This difference may cause the valve core to deform, crack, or experience stress concentration during demolding, thus affecting the product quality of the valve core. By setting through holes 262, the local wall thickness of the core part 260 between two adjacent runner groups 220 can be reduced, making the wall thickness distribution between adjacent runner groups 220 more uniform, thereby improving the product quality and production efficiency of the valve core 200.

[0093] Furthermore, the through holes 262 are spaced apart between two adjacent flow channel groups 220, which facilitates the formation of a heat conduction barrier. Since air and other materials are filled in the through holes 262, the heat transfer between two adjacent flow channel groups 220 can be effectively reduced, which can effectively reduce the mutual interference of heat between two adjacent flow channel groups 220. This helps to maintain the temperature stability in each flow channel group 220, so that the multi-way valve 1000 can control the temperature more precisely when switching flow channel groups 220, and meet the temperature requirements of different application scenarios.

[0094] It is understandable that the number of through holes 262 is matched with the number of flow channel groups 220. For example, if the valve core 200 has four flow channel groups 220, then adjacent flow channel groups 220 will each have a corresponding through hole 262, meaning there are four through holes 262 between the four flow channel groups 220. The number of flow channel groups 220 and through holes 262 can be determined according to actual requirements to meet the needs of different application scenarios. Of course, the number of through holes 262 can also be less than the number of flow channel groups 220.

[0095] like Figures 9-11 As shown, in some embodiments, the outer peripheral wall of the core portion 260 has a plurality of closed regions 264, the closed regions 264 are spaced apart from the flow channel group 220, at least one flow channel group 220 corresponds to a closed region 264, and the closed region 264 is adapted to close the corresponding valve hole 142 when the corresponding flow channel group 220 is connected to the valve hole group 140.

[0096] As can be seen, the presence of the closed region 264 allows for precise closure of valve holes 142 that do not need to be connected when the flow channel group 220 is connected to the valve hole group 140. This helps reduce crossflow of fluid between different valve holes 142, thereby improving the accuracy and reliability of fluid control. Simultaneously, by spaced the closed region 264 from the flow channel group 220, the fluid flow path can be optimized, helping to reduce fluid resistance during flow in the flow channel group 220, thus improving the working efficiency and performance of the multi-way valve 1000. A groove 265 is formed at the closed region 264b, and the groove opening of the groove 265 is formed on the outer peripheral wall of the core portion 260. This helps reduce the frictional torque generated when the valve core 200 rotates, improving the smoothness of the valve core 200's rotation.

[0097] Among them, the plurality of grooves 265 include a first groove 265a, the depth of the first groove 265a (e.g. Figure 9 L6 in the flow channel group is smaller than the radial dimension of 220 (e.g., Figure 9The L7 (which can be understood as the radial distance between the inner wall of the flow channel assembly 220 at its deepest radial position and the outer peripheral wall of the core portion 260) is half of the L7. The core portion 260 also forms a cavity 266, which is located inside the first groove 265a in the radial direction of the valve core 200. The cavity 266 hollows out a certain part of the core portion 260 located inside the first groove 265a, so as to facilitate the equal thickness design of the valve core 200, improve stress distribution, and enhance the performance of the valve core 200 without affecting the sealing of the corresponding valve hole 142. At the same time, since the depth of the first groove 265a is small, and the first groove 265a is formed by a radial inward recess of part of the outer peripheral wall of the core portion 260, the cavity 266 can be machined inside the first groove 265a in the radial direction; and / or, the multiple grooves 265 include a second groove 265b, the depth of the second groove 265b (e.g., Figure 11 L8 in the flow channel group is greater than the radial dimension of 220 (e.g., L8 in the flow channel group). Figure 11 If half of L7 is provided, the second groove 265b will be provided to hollow out the corresponding closed area 264 relatively large, so as to facilitate the equal thickness design of the valve core 200 without affecting the sealing of the corresponding valve hole 142, improve stress distribution, enhance the performance of the valve core 200, and make it easier for the valve core 200 to be removed from the mold, which helps to reduce damage to the valve core 200 during the demolding process and improve demolding efficiency.

[0098] like Figures 9-12As shown, in some embodiments, the core portion 260 is formed with a cavity 266, i.e., a plurality of grooves 265 including a first groove 265a; the cavity 266 communicates with one of the flow channels 222 of the flow channel assembly 220. The presence of the cavity 266 provides an additional flow path for the fluid. When the flow channel assembly 220 is connected to the corresponding valve port 142, the fluid can flow not only through the corresponding valve port 142 in the flow channel assembly 220, but also through the cavity 266 from another valve port 142, increasing the flexibility of fluid control and enabling the multi-way valve 1000 to adapt to more diverse fluid control needs. At the same time, the design of the cavity 266 can reduce the resistance of the fluid during the flow process, which helps to reduce the cost of the multi-way valve 1000. 0. Energy consumption during operation, improving fluid flow efficiency; and / or, cavity 266 is connected to the adjacent through hole 262. Since cavity 266 and through hole 262 are connected, the mold can move more smoothly during demolding, reducing friction and resistance between the mold and valve core 200, which helps to reduce demolding difficulty and improve demolding efficiency. At the same time, the connection between cavity 266 and adjacent through hole 262 provides a demolding path. During demolding, the mold can move more smoothly along this path, avoiding jamming and resistance caused by complex mold structure. This helps to ensure that valve core 200 can be completely separated from the mold, reducing the risk of product damage. It is understandable that in the above scheme, whether the cavity 266 is connected to the flow channel 222, the cavity 266 is connected to the through hole 262, or the cavity 266 is connected to both the flow channel 222 and the through hole 262, the cavity 266 is not a closed structure, which facilitates the improvement of processing convenience under the premise that the valve core 200 is reliable.

[0099] like Figures 7-16 As shown, in some embodiments, the multi-way valve 1000 is configured to satisfy at least one of the following conditions:

[0100] Condition A1: The core portion 260 includes a first part 267 and a second part 268. The first part 267 is arranged around the outer periphery of the shaft portion 240 at intervals. The flow channel group 220 is formed on the first part 267, so that the flow channel group 220 and the valve hole group 140 can better cooperate, and facilitate the rapid switching and connection of multiple flow channel groups 220 and valve hole groups 140 when the valve core 200 rotates. The second part 268 is connected between the shaft portion 240 and the first part 267. During the operation of the multi-way valve 1000, the rotational torque is transmitted from the shaft portion 240 to the second part 268 through the first part 267. The second part 268 provides support for the core portion 260, which helps to enhance the overall stability of the core portion 260, so that the multi-way valve 1000 can still work stably in high pressure, high temperature or high speed fluid environment.

[0101] Furthermore, the second part 268 connects the shaft portion 240 and the first part 267, and the first part 267 is located on the outer periphery of the shaft portion 240. This facilitates the maintenance of the cross-sectional area of ​​the flow channel 222 of the flow channel assembly 220 on the first part 267, preventing abrupt changes in the cross-sectional area of ​​the flow channel 222. This allows for more stable control of the flow rate and pressure of the fluid in the flow channel 222. In other words, the arrangement of the second part 268 enables the flow channel assembly 220 and the shaft portion 240 to be radially spaced apart, thereby increasing the radial distance between the flow channel assembly 220 and the shaft portion 240 to a certain extent. This prevents the space of the flow channel 222 at the innermost radial position of the flow channel assembly 220 from becoming too small, which is beneficial for improving flow smoothness.

[0102] The second part 268 does not have the flow channel assembly 220, making its structure simpler and eliminating the need for complex forming operations during processing, thus reducing processing difficulty and complexity; the axial length of the second part 268 (e.g. Figure 10 L4 in the middle is less than the axial length of the first part 267 (e.g.) Figure 10 The L5 in the middle is used so that the material used in the second part 268 can be reduced while ensuring that the second part 268 reliably connects the shaft part 240 and the first part 267, thereby effectively reducing the manufacturing cost of the valve core 200 and also helping to reduce material waste in the production process.

[0103] Optionally, the second part 268 is a plate structure. The plate structure is easy to manufacture and process. At the same time, the plate structure can provide sufficient strength and rigidity to withstand the various forces and torques generated by the valve core 200 during operation. The simple structure and high strength of the plate structure enable the multi-way valve 1000 to maintain stable working performance in high pressure, high temperature or high speed fluid environments.

[0104] Under condition A2, the axial end faces of the core portion 260 and the inner wall of the mounting cavity 120 respectively define a first cavity 150 and a second cavity 160. The flow channel group 220 includes a plurality of spaced flow channels 222. In at least one flow channel group 220, one of the multiple flow channels 222 penetrates the corresponding axial end face of the core portion 260 to communicate with the first cavity 150 or the second cavity 160. In this case, one end of the aforementioned flow channel 222 can be left open in the axial direction, which simplifies the processing and manufacturing of the valve core 200. Since one of the flow channels 222 in the flow channel group 220 penetrates the core portion 260 and communicates with the first cavity 150 or the second cavity 160b, When the valve core 200 is manufactured using a mold, the mold does not need to completely surround the core portion 260 during demolding, reducing interference between the mold and the core portion 260. This makes it easier for the mold to separate from the core portion 260, reducing the difficulty of demolding. At the same time, one of the flow channels 222 in the flow channel group 220 is connected to the first cavity 150 or the second cavity 160b, making the fluid flow path clear. The fluid can flow along the predetermined path. Moreover, the flow channel 222 is less likely to crossflow with the other flow channels 222, and it can also isolate multiple flow channels 222 in the same flow channel group 220, thereby improving the stability of the multi-way valve 1000 during operation.

[0105] Condition A3: Valve hole group 140 includes multiple rows of valve hole rows 144 spaced apart circumferentially, each row of valve hole rows 144 includes at least one valve hole 142, and at least one flow channel group 220 includes a first flow channel port 224 spaced apart circumferentially, the first flow channel port 224 being adapted to communicate with a corresponding valve hole 142. The first flow channel ports 224 spaced apart circumferentially help the fluid to be distributed more evenly within the valve core 200, reducing fluid deviation and the formation of eddies, thereby reducing energy loss during fluid flow, improving the efficiency and stability of fluid flow, and facilitating a more flexible arrangement of the flow channel 222.

[0106] The circumferential spacing between adjacent flow channel groups 220 (the circumferential distance between the inner wall surfaces of adjacent flow channel groups 220 on their adjacent sides) is greater than the circumferential spacing between adjacent first flow channel openings 224 (the circumferential distance between the edges of adjacent first flow channel openings 224 on their adjacent sides). This facilitates the separation of adjacent flow channel groups 220, reduces the influence between adjacent flow channel groups 220, makes the layout of flow channel groups 220 more reasonable, improves the space utilization rate within the valve core 200, and ensures that the fluid does not leak or cross-flow when the multi-way valve 1000 switches between different connection methods. Furthermore, the area between adjacent flow channel groups 220 facilitates the arrangement and forming of through holes 262.

[0107] It is understood that each row of valve holes 144 includes at least one valve hole 142, and the number of valve holes 142 in each row is not limited, and can be one, two, three or more. The multiple valve holes 142 in the valve hole row 144 can be spaced apart along the axial direction.

[0108] Furthermore, it is understood that the number and layout of the first flow channel ports 224 on the flow channel group 220 are not limited. By increasing the number and reasonable layout of the first flow channel ports 224, the flow handling capacity of the multi-way valve 1000 can be improved. Users can set it according to actual needs, so that users can switch the flow channel group 220 to adapt to a variety of different fluid handling needs.

[0109] A thermal management system 2000 according to a second aspect of the present invention includes a multi-way valve 1000 according to a first aspect of the present invention.

[0110] According to the embodiment of the present utility model, the thermal management system 2000 adopts the above-mentioned multi-way valve 1000, which facilitates the improvement of the assembly efficiency of the thermal management system 2000.

[0111] The vehicle 3000 according to a third aspect of the present invention includes a multi-way valve 1000 according to a first aspect of the present invention or a thermal management system 2000 according to a second aspect of the present invention.

[0112] According to the embodiment of the present utility model, the thermal management system 2000, by adopting the above-mentioned multi-way valve 1000 or thermal management system 2000, facilitates the improvement of the assembly efficiency of the thermal management system 2000.

[0113] It is understood that the specific type of vehicle 3000 referred to in the embodiments of this application is not limited. For example, vehicle 3000 can be a fuel vehicle, a gas vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, fuel cell electric vehicles, range-extended electric vehicles, solar electric vehicles, gas fuel vehicles (such as hydrogen engine vehicles), or biofuel vehicles (such as vehicles powered by ethanol, biodiesel, etc.).

[0114] Other configurations and operations of the vehicle 3000 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0115] Furthermore, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, this application will not describe the various possible combinations separately. In addition, various different embodiments of this application can also be arbitrarily combined, as long as they do not violate the spirit of this application, they should also be regarded as the content disclosed in this application.

[0116] In the description of this utility model, it should be understood that the terms "center," "lateral," "length," "thickness," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0117] 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 present 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.

[0118] Although embodiments of the present 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 present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A multi-way valve, characterized in that, include: A housing having an installation cavity formed inside, and a valve hole group being provided on the housing, the valve hole group comprising m valve holes spaced apart, where m is a positive integer and m≥3; The valve core has n groups of flow channels spaced apart circumferentially, where n is a positive integer and n≥2. The valve core is rotatably disposed in the mounting cavity so that multiple groups of flow channels can switch communication with the valve orifice group. A sealing element is disposed between the housing and the valve core, and the sealing element has a plurality of clearance through holes, which are connected to the valve holes one by one. The side surface of the sealing element facing the valve core is an arc surface adapted to the outer peripheral wall of the valve core, and the central angle corresponding to the arc surface of the sealing element is α1, where 30°≤α1≤99°.

2. The multi-way valve according to claim 1, characterized in that, The valve hole group includes p rows of valve holes spaced circumferentially, and each row of valve holes includes multiple valve holes spaced axially, where p is a positive integer and 2≤p≤3, m≥6, and n≥3.

3. The multi-way valve according to claim 2, characterized in that, 50°≤α1≤80°。 4. The multi-way valve according to claim 1, characterized in that, The arc surface of the seal is divided into a plurality of first sealing portions spaced apart circumferentially by the clearance through hole, and the central angle corresponding to the first sealing portion is α2, 5°≤α2≤15°.

5. The multi-way valve according to claim 4, characterized in that, The arc surface of the seal is divided into a plurality of second sealing portions spaced apart along the axial direction by the clearance through hole, and the axial length of the second sealing portion is equivalent to the circumferential length of the first sealing portion.

6. The multi-way valve according to claim 1, characterized in that, The sealing element is an integral arc-shaped component, and the central angles corresponding to the two ends of the circumferential direction of the sealing element are α3, α3>α1, 60°≤α3≤150°.

7. The multi-way valve according to claim 6, characterized in that, α3≤90°。 8. The multi-way valve according to claim 6, characterized in that, The two circumferential ends of the sealing element are correspondingly spaced from the two circumferential ends of the arc surface. A first limiting groove is formed on the circumferential wall of the mounting cavity. The valve hole group is formed on the bottom wall of the first limiting groove. The sealing element is circumferentially positioned and fitted into the first limiting groove. The two circumferential side walls of the first limiting groove extend radially from the outside to the inside towards each other. The two circumferential ends of the sealing element each have a mating part. The radially inner surfaces of the two mating parts extend radially from the outside to the inside towards each other and are respectively connected to the two circumferential ends of the arc surface of the sealing element.

9. The multi-way valve according to claim 8, characterized in that, The angle between each of the two circumferential walls of the first limiting groove and the circumferential direction at its location is α4, where 10°≤α4<90°.

10. The multi-way valve according to claim 1, characterized in that, At least a portion of the wall of the clearance through hole is formed as a first cylindrical surface, and at least a portion of the wall of the valve hole is formed as a second cylindrical surface, wherein the axial direction of the first cylindrical surface is parallel to the axial direction of the second cylindrical surface.

11. The multi-way valve according to claim 1, characterized in that, The sealing element includes a body and a rib structure. The rib structure protrudes from the side of the body away from the valve core. The clearance through hole is formed on the body. The rib structure defines a plurality of sealing rings. The plurality of sealing rings are arranged in a one-to-one correspondence with the plurality of clearance through holes, and each sealing ring is arranged around the corresponding clearance through hole.

12. The multi-way valve according to claim 11, characterized in that, The rib structure includes multiple ribs, the surface of each rib facing away from the valve core being arc-shaped. Each rib includes multiple first ribs and multiple second ribs. The first ribs are spaced apart circumferentially, and each first rib extends axially to both ends of the body. The multiple second ribs corresponding to the valve hole array are spaced apart axially, and each second rib extends circumferentially. The intersecting first and second ribs define the sealing ring. A plurality of second ribs are provided between two adjacent valve holes in the valve hole row, and at least two adjacent second ribs located between two adjacent valve holes in the valve hole row are connected by reinforcing ribs, and the reinforcing ribs are spaced apart from the circumferential ends of the second ribs; and / or, A plurality of first ribs are provided between two corresponding valve holes in two adjacent rows of valve holes. A second limiting groove is defined between two of the plurality of first ribs located between two corresponding valve holes in two adjacent rows of valve holes. The second limiting groove is in circumferential limiting engagement with the limiting protrusion on the inner wall of the housing.

13. The multi-way valve according to any one of claims 1-12, characterized in that, The valve core includes a shaft portion and a core portion. The core portion is arranged around the outer periphery of the shaft portion. Multiple sets of flow channels are formed on the core portion. The two axial ends of the shaft portion are rotatably engaged with the housing. A through hole is formed on the core portion that passes through it axially. The through hole is spaced between two adjacent sets of flow channels.

14. The multi-way valve according to claim 13, characterized in that, The outer peripheral wall of the core portion has multiple closed regions, which are spaced apart from the flow channel groups. At least one flow channel group corresponds to a closed region. The closed region is adapted to close the corresponding valve hole when the corresponding flow channel group is connected to the valve hole group. A groove is formed at the closed region, and the groove opening is formed on the outer peripheral wall of the core portion. The plurality of grooves include: A first groove, the depth of which is less than half the radial dimension of the flow channel assembly, and the core portion further having a cavity located inside the first groove in the radial direction of the valve core; and / or, The second groove has a depth greater than half the radial dimension of the flow channel assembly.

15. The multi-way valve according to claim 14, characterized in that, The core portion has a cavity. The cavity is connected to one of the flow channels of the flow channel assembly; and / or, The cavity is connected to the adjacent through hole.

16. The multi-way valve according to claim 13, characterized in that, The multi-way valve is configured to satisfy at least one of the following conditions: Condition A1: The core portion includes a first portion and a second portion. The first portion is disposed around the outer periphery of the shaft portion at intervals, and the flow channel assembly is formed on the first portion. The second portion is connected between the shaft portion and the first portion, and the axial length of the second portion is less than the axial length of the first portion. Condition A2: The axial end faces of the core portion and the inner wall of the mounting cavity respectively define a first cavity and a second cavity. The flow channel group includes a plurality of spaced flow channels. In at least one group of the flow channels, one of the plurality of flow channels passes through the corresponding axial end face of the core portion to communicate with the first cavity or the second cavity. Condition A3: The valve hole group includes multiple rows of valve hole rows spaced apart circumferentially, each row of valve hole rows includes at least one valve hole, and at least one flow channel group includes a first flow channel opening spaced apart circumferentially, the first flow channel opening being adapted to communicate with a corresponding valve hole, and the circumferential interval between adjacent flow channel groups being greater than the circumferential interval between adjacent first flow channel openings.

17. A thermal management system, characterized in that, Includes the multi-way valve according to any one of claims 1-16.

18. A vehicle, characterized in that, Includes a multi-way valve according to any one of claims 1-16 or includes a thermal management system according to claim 17.

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