Multi-way valve and thermal management system

Abstract

The utility model discloses a multi-way valve and a thermal management system, the multi-way valve comprises a valve body, a valve cover, a valve core assembly, a sealing gasket and a magnetic adjusting part, the magnetic adjusting part is arranged between the valve cover and the valve core assembly, the magnetic adjusting part comprises a first magnet and a second magnet, the first magnet is arranged on one side of the valve cover facing the valve core assembly, and the second magnet is arranged on the other side of the valve cover facing the valve core assembly. The second magnet is arranged on the side, facing the valve deck, of the valve element assembly, the same magnetic poles of the first magnet and the second magnet are oppositely arranged, and the first magnet and the second magnet are used for generating magnetic repulsive force to enable the valve element assembly to abut against the sealing gasket so that the sealing gasket can be attached to the valve element assembly and the valve body. Under the matching action of the valve cover and the valve body, the valve element assembly is better kept at the sealing position, the problem of sealing failure is avoided, good and lasting operation of equipment is facilitated, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a multi-way valve and a thermal management system. Background Art

[0002] In new energy vehicle thermal management systems, multi-way valves are required to control the cooling circuits for the motor, battery, and cabin, thereby controlling the temperature environment in different areas. In conventional multi-way valves, the valve core assembly rotates to different positions to connect different flow channels.

[0003] In the process of implementing the present invention, the inventors discovered that the following problems exist in the use of the multi-way valve:

[0004] The seal between the valve core assembly and the valve body is difficult to guarantee. As the liquid passes through the valve core assembly from the valve body, it pushes the valve core assembly away from the valve body. This relative distance between the two reduces the sealing effect. Moreover, because the valve core assembly selectively connects to different flow channels, the side of the valve core assembly facing the valve body is not subjected to uniform thrust. The different thrusts at different positions cause the valve core assembly to tilt, making the sealing effect even less ideal in areas with greater thrust. Once the liquid leaks, it will cause environmental pollution, reduce control accuracy, and shorten the service life. Summary of the Invention

[0005] In order to solve the problem of possible sealing failure between the valve core assembly and the valve body in the prior art, the purpose of the present utility model is to provide a multi-way valve and a thermal management system with better sealing effect.

[0006] To achieve the above-mentioned purpose of the utility model, one embodiment of the utility model provides a multi-way valve, comprising:

[0007] Valve body;

[0008] A valve cover, the valve cover and the valve body are combined to define an inner cavity;

[0009] a valve core assembly rotatably disposed in the inner cavity;

[0010] a sealing gasket, the sealing gasket being arranged between the valve core assembly and the valve body;

[0011] Characterized in that, the multi-way valve further comprises:

[0012] A magnetic adjustment portion, wherein the magnetic adjustment portion is arranged between the valve cover and the valve core assembly, and the magnetic adjustment portion includes a first magnet and a second magnet, wherein the first magnet is arranged on the side of the valve cover facing the valve core assembly, and the second magnet is arranged on the side of the valve core assembly facing the valve cover, and the same magnetic poles of the first magnet and the second magnet are arranged opposite to each other, and are used to generate a magnetic repulsive force to press the valve core assembly against the sealing gasket, so that the sealing gasket is respectively fitted with the valve core assembly and the valve body.

[0013] As a further improvement of the present invention, the number of the first magnet and the number of the second magnet are both one, the first magnet and the second magnet are both annular, and are both coaxially arranged with the valve core assembly.

[0014] As a further improvement of the present invention, a first mounting groove is provided on the side of the valve cover facing the valve core assembly, and the first magnet is provided in the first mounting groove; a second mounting groove is provided on the side of the valve core assembly facing the valve cover, and the second magnet is provided in the second mounting groove; when the valve core assembly rotates, the first magnet and the second magnet rotate relative to each other.

[0015] As a further improvement of the present invention, during the rotation of the valve core assembly, the distance between the first magnet and the second magnet is maintained to be greater than zero.

[0016] As a further improvement of the present invention, the number of the first magnets is multiple, and at any rotation position of the valve core assembly, the projections of the multiple first magnets on the first projection plane all fall within the projection of the second magnet on the first projection plane, and the first projection plane is a plane perpendicular to the rotation axis of the valve core assembly.

[0017] As a further improvement of the present invention, the first magnet is a cylindrical magnet, the second magnet is an annular structure, and a first magnet mounting hole corresponding to each first magnet is provided on the side of the valve cover facing the valve core assembly; when the valve core assembly rotates, the first magnet and the second magnet rotate relative to each other.

[0018] As a further improvement of the present invention, there are multiple second magnets, and at any rotation position of the valve core assembly, the projection of the second magnet on the first projection plane falls within the projection of the first magnet on the first projection plane, and the first projection plane is a plane perpendicular to the rotation axis of the valve core assembly.

[0019] As a further improvement of the present invention, the second magnet is a cylindrical magnet, the first magnet is an annular structure, and a second magnet mounting hole corresponding to each second magnet is provided on the side of the valve core assembly facing the valve cover; when the valve core assembly rotates, the first magnet and the second magnet rotate relative to each other.

[0020] As a further improvement of the present invention, a first flow channel and a second flow channel are provided in the valve core assembly, and the flow rate of the medium in the first flow channel is greater than the flow rate of the medium in the second flow channel; the second magnet is arranged corresponding to the flow channel position in the valve core assembly, and the magnetic field strength of the second magnet arranged corresponding to the first flow channel position is greater than the magnetic field strength of the second magnet arranged corresponding to the second flow channel position.

[0021] In order to achieve one of the above-mentioned purposes of the utility model, an embodiment of the utility model provides a thermal management system, characterized in that it includes the above-mentioned multi-way valve.

[0022] Compared with the commonly used technology, the utility model has the following beneficial effects: the multi-way valve and thermal management system are provided with a first magnet and a second magnet, and the first magnet and the second magnet can generate relative magnetic repulsion between each other. Under the cooperation of the valve cover and the valve body cover, the valve core assembly is better maintained in a sealed position, thereby avoiding the problem of sealing failure, being conducive to the good and long-term operation of the equipment and improving its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a cross-sectional view of a multi-way valve according to an embodiment of the present invention;

[0024] Figure 2 This is an exploded view of a multi-way valve according to an embodiment of the present invention;

[0025] Figure 3 This is a schematic structural diagram of a valve core according to an embodiment of the present invention;

[0026] Figure 4 Schematic diagram of the inner side of the valve cover of one embodiment of the present utility model;

[0027] Figure 5 This is a cross-sectional view of the valve cover and the elastic adjustment portion after assembly according to one embodiment of the present invention;

[0028] Figure 6 yes Figure 5 A partial enlarged view of point A in the middle;

[0029] Figure 7 This is an exploded view of the valve cover and the elastic adjustment portion of another embodiment of the utility model;

[0030] Figure 8FIG1 is an exploded view of a multi-way valve according to another embodiment of the present invention;

[0031] Figure 9 FIG1 is an exploded view of a multi-way valve according to another embodiment of the present invention;

[0032] Figure 10 FIG1 is an exploded view of a multi-way valve according to another embodiment of the present invention;

[0033] Among them, 100, multi-way valve; 10, valve body; 11, inner cavity; 12, first central axis; 20, valve cover; 201, valve cover body; 202, positioning ring; 203, fixing part; 21, cylinder; 211, cylinder body; 212, limiting part; 22, supporting part; 30, valve core assembly; 31, valve disc; 32, valve core; 321, sliding surface; 322, opening; 323, positioning groove; 324, second mounting groove; 325, second magnet mounting hole; 33, first channel; 34, second channel; 40, sealing gasket; 41, flow channel hole; 50, elastic adjustment part; 51, elastic part; 52, ball; 60, magnetic adjustment part; 61, first magnet; 62, second magnet. DETAILED DESCRIPTION

[0034] The present invention will be described in detail below with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0035] It should be understood that the terms used herein, such as "upper," "above," "lower," and "below," etc., indicating spatial relative positions, are used for ease of explanation to describe the relationship of one element or feature relative to another element or feature as shown in the accompanying drawings. Spatially relative terms may be intended to encompass different orientations of the device in use or operation other than the orientation shown in the drawings.

[0036] An embodiment of the present invention provides a multi-way valve and a thermal management system with better sealing effect and preventing the valve core assembly from tilting.

[0037] The thermal management system of this embodiment can be used to manage the heat of different areas of a new energy vehicle, wherein the core component of the thermal management system, the multi-way valve 100, is as follows: Figure 1 and 2 As shown, the valve comprises a valve body 10, a valve cover 20, a valve core assembly 30, and a sealing gasket 40. The valve cover 20 and the valve body 10 cover and define an inner cavity 11. The valve core assembly 30 is rotatably disposed in the inner cavity 11. The sealing gasket 40 is disposed between the valve core assembly 30 and the valve body 10. The rotation of the valve core assembly 30 enables switching between different thermal cycle circuits.

[0038] The valve body 10 is provided with a plurality of flow passages for the valve body 10, and the valve core assembly 30 is provided with a flow passage for the valve core 32. Furthermore, the multi-way valve 100 may further include a drive assembly for driving the valve core assembly 30 to rotate. The drive assembly drives the valve core assembly 30 to rotate to different positions, thereby connecting the flow passages for the valve core 32 with different flow passages in the valve body 10. In this embodiment, the plurality of flow passages for the valve body 10 provided in the valve body 10 are all provided on the same side of the valve core assembly 30. In other words, the inlet and outlet of the valve body 10 are all provided on the same side, which helps to reduce space occupied.

[0039] To clearly illustrate the positions and directions described in this embodiment, the valve body 10 is defined as being below the valve cover 20, with the reverse direction being upward. The valve core assembly 30 can rotate parallel to the water surface, with the horizontal plane being perpendicular to the vertical direction. This allows the valve cover 20 to press down on the valve core assembly 30, which in turn presses down on the gasket 40. Furthermore, the gasket 40 is appropriately compressed, simultaneously exerting an upward force on the valve core assembly 30 and a downward force on the valve body 10.

[0040] The multi-way valve 100 of this embodiment also includes a sealing adjustment portion, which is arranged between the valve cover and the valve core assembly. The sealing adjustment portion includes a first adjusting member and a second adjusting member. The first adjusting member is arranged on the side of the valve cover facing the valve core assembly, and the second adjusting member is arranged on the side of the valve core assembly facing the valve cover. The first adjusting member and the second adjusting member generate a relative repulsive force between each other, which is used to press the valve core assembly against the sealing gasket so that the sealing gasket fits the valve core assembly and the valve body respectively.

[0041] In some embodiments, the sealing adjustment portion is an elastic adjustment portion, that is, the valve core assembly is pressed against the sealing gasket by using a spring to provide elastic force.

[0042] Specifically, the multi-way valve 100 further includes a plurality of elastic adjustment parts 50, such as Figure 1 and 2 As shown, multiple elastic adjustment parts 50 are arranged between the valve cover 20 and the valve core assembly 30, and independently abut against the side of the valve core assembly 30 away from the sealing gasket 40 at different positions, so as to press the valve core assembly 30 against the sealing gasket 40, so that the sealing gasket 40 fits with the valve core assembly 30 and the valve body 10 respectively. The setting of the elastic adjustment part 50 not only ensures the fit of the sealing gasket 40 with the valve core assembly 30 and the valve body 10, but also ensures that the valve core assembly 30 will not tilt during rotation.

[0043] As described in the background, liquid pushes the valve core assembly 30 away from the valve body 10, primarily exerting an upward force. The elastic adjustment portion 50 is resilient and is used to exert a downward force on the valve core assembly 30, thereby regulating and balancing this thrust. The elastic adjustment portion 50 is fixed relative to the valve cover 20. That is, the elastic adjustment portion 50 does not move horizontally relative to the rotation of the valve core assembly 30.

[0044] On the one hand, since the elastic adjustment part 50 presses the valve core assembly 30 against the sealing gasket 40, that is, applies a force to squeeze the valve core assembly 30 in the direction of the sealing gasket 40, it can balance the thrust of the liquid on the valve core assembly 30 away from the valve body 10, thereby avoiding the valve core assembly 30 from moving away from the sealing gasket 40 and avoiding the sealing performance of the sealing gasket 40 from being compromised, so that the sealing performance of the multi-way valve 100 can be better maintained.

[0045] On the other hand, since each elastic adjustment part 50 independently applies a force to the valve core assembly 30 toward the valve body 10, the size of each elastic adjustment part 50 may be different. That is to say, if the liquid in the valve body 10 applies a stronger thrust away from the valve body 10 to the valve core assembly 30 at some positions and a weaker thrust at some positions, the elastic adjustment part 50 corresponding to the position with stronger thrust will be further compressed, which will apply a greater reaction force to the valve core assembly 30 at that position, while the reaction force applied to the area with smaller thrust is relatively small. Therefore, the independent multiple elastic adjustment parts 50 achieve the effect of balancing various thrusts of different sizes at different positions, which is beneficial to avoid the problem that the valve core assembly 30 has a tendency to tilt due to thrusts of different sizes at different positions, so that the rotation direction of the valve core assembly 30 is consistent with the ideal direction.

[0046] In addition, since the elastic adjustment part 50 applies a downward force to the valve core assembly 30, it also avoids the valve core assembly 30 from abutting against the valve cover 20, thereby reducing the relative friction between the valve core assembly 30 and the valve cover 20 when rotating, and further protecting the valve core assembly 30.

[0047] In addition, after the elastic adjustment part 50 is provided, the thickness of the sealing gasket 40 can have lower requirements on parts accuracy and assembly accuracy. That is to say, in order to maintain the sealing effect of the sealing gasket 40, it can be compensated by multiple elastic adjustment parts 50, thereby reducing production and manufacturing costs and avoiding leakage of liquid in the multi-way valve 100.

[0048] Furthermore, the elastic adjustment portion 50 includes an elastic member 51 and a ball bearing 52. The elastic member 51 is configured as the first adjustment member, and the friction member 52 is configured as the second adjustment member. One end of the elastic member 51 abuts the valve cover 20, and the other end abuts the valve core assembly 30 via the ball bearing 52. The elastic member 51 is at least partially compressed due to the space between the valve cover 20 and the valve core assembly 30. The direction in which the elastic member 51 releases its elastic force is used to press the valve core assembly 30 against the sealing gasket 40, and the ball bearing 52 abuts between the elastic member 51 and the valve core assembly 30. The elastic member 51 is always in a compressed state. The length of the elastic member 51 when it returns to its natural state can be greater than or equal to the length of the space between the valve cover 20 and the valve core assembly 30.

[0049] In this embodiment, the elastic member 51 can be configured as a compression spring, and the ball 52 is spherical. The diameter of the ball 52 is larger than the cross-sectional diameter of the compression spring, and the end face of the compression spring abuts the ball 52. During the rotation of the valve core assembly 30, the ball 52 can roll on the surface of the valve core assembly 30, and the ball 52 also rolls relative to the elastic member 51. This rolling motion helps reduce friction between the rotating valve core assembly 30 and other stationary parts, while also providing support. If the deformation of the elastic member 51 does not change, ideally, the ball 52 rotates in place during the rotation of the valve core assembly 30.

[0050] like Figure 1 and 4 As shown, the valve cover 20 includes multiple cylinders 21. The number of cylinders 21 matches the number of elastic adjustment portions 50, and each cylinder 21 is provided with a corresponding set of elastic members 51 and balls 52. The cylinders 21 are used to maintain the elastic adjustment portions 50 in a relatively fixed position, allowing the elastic members 51 to only perform vertical telescopic movement and preventing the balls 52 from separating from the elastic members 51. Alternatively, the cylinders 21 may be other structures for maintaining the elastic adjustment portions 50 in place, such as an annular structure or a structure forming multiple cylindrical cylinders.

[0051] Further, if Figure 2 and 3 As shown, multiple cylinders 21 are arranged in an annular array, and an annular sliding surface 321 is provided on the surface of the valve core assembly 30. During the rotation of the valve core assembly 30, each ball 52 is always in contact with the sliding surface 321 under the drive of the corresponding elastic member 51. The center of the annular sliding surface 321 can be the rotation axis of the valve core assembly 30. In this way, the ball 52 always rolls on the sliding surface 321 without leaving the sliding surface 321, and the arrangement of the sliding surface 321 does not interfere with other structures.

[0052] like Figure 5 and 6As shown, the cylinder 21 includes a cylinder body 211 and a limiting portion 212. The limiting portion 212 is provided at one end of the cylinder body 211 near the valve core 32 assembly 30. The cross-section of the space enclosed by the cylinder body 211 is not less than the maximum cross-section of the ball 52, and the cross-section of the space enclosed by the limiting portion 212 is less than the maximum cross-section of the ball 52. The limiting portion 212 can be a plurality of protrusions provided at the bottom of the cylinder body 211, or a circular ring provided at the bottom of the cylinder body 211, and the area of ​​the circle enclosed by the circular ring is less than the maximum cross-section of the ball 52. For a spherical ball 52, its maximum cross-section is the cross-section of the diameter. The limiting portion 212 restricts the ball 52 from always being located in the cylinder body 21 and not being separated from the cylinder body 21. The limiting portion 212 does not restrict the ball 52 from being partially exposed outside the cylinder body 21.

[0053] The ball 52 has a first position and a second position; in the first position, as Figure 6 As shown, the compression spring presses against the ball 52 on the side relatively close to the valve core 32 assembly 30, the compression spring is in a compressed state, and a portion of the ball 52 is exposed outside the cylinder 21. The limit portion 212 restricts the portion of the ball 52 from being located inside the cylinder 21. In the second position, the compression spring presses against the ball 52 on the side relatively far from the valve core 32 assembly 30, the compression spring is in a compressed state, and the ball 52 is completely located inside the cylinder 21. The first position corresponds to the ball 52 being at the bottom, and the second position corresponds to the ball 52 being at the top. In both positions, the compression spring is in a compressed state, that is, it is always in a compressed state, constantly applying a downward force to the ball 52.

[0054] like Figure 4 and 5 In one embodiment shown, the cylinder 21 and the valve cover 20 are integrally formed, that is, the valve cover 20 is manufactured with multiple cylinders 21. In this embodiment, the elastic member 51 and the ball 52 can be sequentially installed in the cylinder 21. During installation, a relatively large force is applied to the ball 52, causing the ball 52 or the stopper 212 to deform and be installed in the cylinder 21. After installation, the stopper 212 confines the ball 52 within the cylinder.

[0055] like Figure 7In another embodiment shown, the valve cover 20 also includes a valve cover body 201 and a positioning ring 202. A plurality of cylinders 21 are provided on the positioning ring 202. The positioning ring 202 is fixedly connected to the valve cover body 201 via a fixing member 203. Through holes and screw holes are respectively provided on the valve cover body 201 and the positioning ring 202. The fixing member 203 can be a fixing connecting member such as a bolt, a screw, or a rivet, which passes through the holes on the valve cover body 201 and the positioning ring 202 in sequence to fix the two together. In this embodiment, before the positioning ring 202 and the valve cover body 201 are assembled, the ball 52 and the elastic member 51 can be placed in the cylinder in sequence. The ball 52 will not fall out due to the restriction of the positioning portion 212. Then the positioning ring 202 and the valve cover body 201 are fixed by the fixing member 203. During the fixing process, the elastic member 51 is further compressed. In addition, the plurality of cylinders 21 arranged in an annular array also means that the elastic adjustment portion 50 is arranged in an annular array, such as Figure 2 and 4 As shown, four elastic adjustment portions 50 are provided, with adjacent elastic adjustment portions 50 being arranged at an angle of 90° to the center of the circle. Similarly, if six elastic adjustment portions 50 are provided, adjacent elastic adjustment portions 50 are arranged at an angle of 60° to the center of the circle. This nearly uniform arrangement of the elastic adjustment portions 50 facilitates applying a relatively balanced force to the valve core assembly 30.

[0056] The sliding surface 321 can be a plane or an arc-shaped concave surface. The arc-shaped concave surface is conducive to keeping the ball 52 always sliding in the sliding surface 321. If it is set to a plane, the stable operation of the ball 52 on the plane is guaranteed by the setting of the structure such as the size of the cylinder 21 and the ball 52.

[0057] If the sliding surface 321 is a plane, the first plane of the valve body 10 facing the sealing gasket 40, the second plane of the sealing gasket 40 facing the valve body 10, and the sliding surface 321 can all be parallel to each other. The first plane, the second plane, and the sliding surface 321 can all be parallel to a horizontal plane, and in combination with the elastic adjustment portion 50, a downward force is applied to the valve core assembly 30. In other words, the direction of the force applied by the elastic adjustment portion 50 is consistent with the direction of the force applied by the sealing gasket 40 on the valve core assembly 30.

[0058] For example Figure 1 and 2 As shown, the valve core assembly 30 includes a valve disc 31 and a valve core 32. The valve disc 31 and the valve core 32 rotate synchronously. The valve core 32 is provided with at least two openings 322. The number of through holes on the valve disc 31 is greater than the number of openings 322. In addition, the valve body 10 is provided with more than two flow channel holes 41 for docking different thermal cycle circuits. The number of openings 322 of the valve core 32 can be no less than the number of these flow channel holes 41. When the valve core assembly 30 rotates to different positions, the openings 322 of the valve core 32 dock with the flow channel holes 41 of the part. The structure of the valve core 32 is as shown in FIG. Figure 3As shown, the valve core 32 of this embodiment is used to select and connect different thermal circulation circuits. When the valve core assembly 30 rotates to different positions, a first channel 33 is defined between the valve disc 31 and the valve core 32, and a second channel 34 is defined between the valve core 32 and the valve cover 20. In other words, the first channel 33 is defined by the space between the valve disc 31 and the valve core 32, and the second channel 34 is defined by the space between the valve cover 20 and the valve core 32. A flow channel is defined within the valve body 10. The flow channel, the through hole of the valve disc 31, the first channel 33, the through hole of the valve core 32, and the second channel 34 are sequentially connected, enabling liquid to selectively flow to different thermal circulation circuits within the multi-way valve 100.

[0059] Further, if Figure 1 As shown, the sealing gasket 40 is relatively fixed to the valve disc 31, and a flow channel hole 41 is provided on the sealing gasket 40, which is aligned with the through hole of the valve disc 31. The sealing gasket 40 is used to play a dynamic sealing role between the rotating valve disc 31 and the stationary valve body 10. The sealing gasket 40 can be set to a rubber material, which can produce a certain deformation when subjected to pressure. The deformation will exert a reaction force on the valve disc 31, that is, an upward thrust, and the elastic adjustment part 50 exerts a downward force on the valve core assembly 30, which is conducive to balancing the reaction force. Then, the setting of the elastic adjustment part 50 is conducive to the sealing of the sealing gasket 40.

[0060] Furthermore, the valve body 10 further includes a first central axis 12 extending into the inner cavity 11. The valve core assembly 30 includes a first central hole for passing through the first central axis 12. The valve cover 20 includes a support portion 22 aligned with the first central axis 12. Each elastic adjustment portion 50 is located at the same distance from the first central axis 12. The support portion 22 and the first central axis 12 are connected to each other to jointly limit the valve core assembly 30 from rotating in place on a horizontal plane. The multiple elastic adjustment portions 50 are annularly arranged around the first central axis 12.

[0061] Compared with the prior art, this embodiment has the following beneficial effects:

[0062] (1) The multi-way valve 100 and the thermal management system apply a reaction force to the valve core assembly 30 at multiple positions to overcome the fluid thrust by providing multiple elastic adjustment parts 50. On the one hand, the valve core assembly 30 is better maintained in a sealed position, thereby avoiding the problem of sealing failure. On the other hand, forces are applied from all directions to overcome the tilting tendency, thereby avoiding the tilting of the valve core assembly 30, further ensuring the sealing effect, facilitating the good and long-term operation of the equipment, and improving the service life.

[0063] (2) The downward force exerted by the elastic adjustment portion 50 on the valve core assembly 30 can reduce the relative friction between the valve core assembly 30 and the valve cover 20 when the valve core assembly 30 rotates, thereby avoiding the wear problem of the valve cover 20 and the valve core assembly 30, protecting the valve cover 20 and the valve core assembly 30, and extending the service life of the multi-way valve 100.

[0064] (3) The provision of the elastic adjustment portion 50 reduces the production accuracy requirements and assembly accuracy requirements of the sealing gasket 40 , thereby reducing the overall cost of the multi-way valve 100 and achieving a better sealing effect.

[0065] In some other embodiments, the sealing adjustment portion is a magnetic adjustment portion 60 , that is, a magnet is used to provide a magnetic repulsive force to press the valve core 32 assembly 30 against the sealing gasket 40 .

[0066] Specifically, the magnetic adjustment part 60 includes a first magnet 61 and a second magnet 62, the first magnet 61 is fixed to the side of the valve cover 20 facing the valve core 32 assembly 30, and the second magnet 62 is fixed to the side of the valve core 32 assembly 30 facing the valve cover 20, and the same magnetic poles of the first magnet 61 and the second magnet 62 are arranged opposite to each other, for generating a magnetic repulsive force to press the valve core 32 assembly 30 against the sealing gasket 40, so that the sealing gasket 40 is respectively fitted with the valve core assembly and the valve body.

[0067] As described in the background art, the liquid will exert a thrust on the valve core 32 assembly 30 away from the valve body 10, that is, a primarily upward force. Compared to the above-mentioned solution using the elastic adjustment portion 50, in this embodiment, the magnetic repulsion force generated by the magnetic adjustment portion 60 replaces the elastic force, which is used to apply a downward force to the valve core 32 assembly 30 to adjust and balance the thrust. In this embodiment, the first magnet 61 is fixed to the valve cover 20, facing the side of the valve core 32 assembly 30; the second magnet 62 is fixed to the valve core 32 assembly 30, facing the side of the valve cover 20, and the same magnetic poles of the first magnet 61 and the second magnet 62 are arranged relative to each other, that is, the south pole is facing the south pole or the north pole is facing the north pole. In this way, a magnetic repulsion force is generated between the two, causing the valve core 32 assembly 30 to apply pressure to the sealing gasket 40.

[0068] The shapes of magnets are different, and the positions of their magnetic poles are also different, so the fixing methods for magnets of different shapes may be different.

[0069] In one implementation, the number of the first magnet 61 and the number of the second magnet 62 are both one, the first magnet 61 and the second magnet 62 are both annular, and are both coaxially arranged with the valve core assembly 30 .

[0070] See also Figure 8 , Figure 8This is an exploded view of a multi-way valve 100 according to another embodiment of the present invention. The first magnet 61 and the second magnet 62 are both annular structures. The first magnet 61 is fixedly connected to the valve cover 20, and the second magnet 62 is fixedly connected to the valve core 32 assembly 30. Therefore, the magnetic repulsion force generated between the first magnet 61 and the second magnet 62, and the pressing force of the valve cover 20 fixed to the valve body 10 can press the valve core assembly 30 onto the sealing gasket 40.

[0071] As a specific installation method of the first magnet 61 and the second magnet 62, the valve cover 20 is provided with a first installation groove on the side facing the valve core 32 component 30, and the first magnet 61 is arranged in the first installation groove, and the valve core 32 component 30 is provided with a second installation groove 324 on the side facing the valve cover 20, and the second magnet 62 is arranged in the second installation groove 324. When the valve core 32 component 30 rotates, the first magnet 61 and the second magnet 62 rotate relative to each other.

[0072] The first magnet 61 and the second magnet 62 can be fixed in the mounting groove by adhesive, can be fixed by hot melting, or can be fixed by interference fit. The fixing method of the first magnet and the second magnet is not limited here.

[0073] By arranging the first magnet 61 and the second magnet 62 in specific mounting grooves, it is ensured that they remain in a fixed position, thereby increasing the stability and reliability between the two. Moreover, the position of the magnets is relatively fixed, and the rotation of the valve core 32 assembly 30 will not directly generate friction on the magnets, thereby reducing the wear of the magnets and extending their service life.

[0074] It is understandable that the annular structure of the first magnet 61 and the second magnet 62 can be composed of multiple magnets, for example, two semi-circular ring magnets or multiple equally divided circular magnets can be assembled to obtain an overall annular structure. This embodiment does not limit the number of components of the magnet annular structure.

[0075] In another implementation, the number of the first magnets 61 is multiple, and at any rotational position of the valve core 32 assembly 30, the projections of the multiple first magnets 61 on a first projection plane all fall within the projection of the second magnet 62 on the first projection plane, and the first projection plane is a plane perpendicular to the rotation axis of the valve core 32 assembly 30;

[0076] Alternatively, there are multiple second magnets 62 , and at any rotational position of the valve core 32 assembly 30 , the projections of the second magnets 62 on the first projection plane fall within the projections of the first magnets 61 on the first projection plane.

[0077] There are multiple first magnets 61, and regardless of the rotational position of the valve core 32 assembly 30, their projections always fall on the first projection plane, and these projections are all located within the projection of the second magnet 62 on the first projection plane. Alternatively, there are multiple second magnets 62, and regardless of the rotational position of the valve core 32 assembly 30, their projections always fall on the first projection plane, and these projections are all located within the projection of the first magnet 61 on the first projection plane. This means that regardless of how the valve core 32 assembly 30 rotates, the projection of the first magnet 61 is always located within the projection of the second magnet 62, or the projection of the second magnet 62 is always located within the projection of the first magnet 61, ensuring that the magnets always maintain a relatively stable position during rotation.

[0078] In this embodiment, when there are multiple first magnets 61, the first magnets 61 are cylindrical magnets, the second magnets 62 are annular, and a first magnet mounting hole corresponding to each first magnet 61 is provided on a side of the valve cover 20 facing the valve core 32 assembly 30.

[0079] Alternatively, when there are multiple second magnets 62 , the second magnets are cylindrical magnets, the first magnets are annular, and a second magnet mounting hole 325 corresponding to each second magnet 62 is provided on a side of the valve core 32 assembly 30 facing the valve cover 20 ;

[0080] When the valve core 32 assembly 30 rotates, the first magnet 61 and the second magnet 62 rotate relative to each other.

[0081] See also Figure 9 and Figure 10 , Figure 9 FIG. 1 is an exploded view of a multi-way valve 100 according to another embodiment of the present invention. Figure 10 FIG is an exploded view of a multi-way valve 100 according to another embodiment of the present invention. Figure 9 In the embodiment, the first magnet 61 is an annular structure, the second magnet 62 is a plurality of cylindrical magnets, and the projection of the second magnet 62 is always located inside the projection of the first magnet 61; Figure 10 In the embodiment, the second magnet 62 is annular, and the first magnet 61 is a plurality of cylindrical magnets. The projection of the first magnet 61 is always located inside the projection of the second magnet 62, thereby ensuring that the magnets always maintain a relatively stable position during the rotation process and providing effective magnetic repulsion. Figure 9 In the embodiment, the valve core 32 assembly 30 is provided with second magnet mounting holes 325 on the side facing the valve cover 20, which are the same in number and shape as the second magnets 62; Figure 10In the embodiment, the valve cover 20 is provided with first magnet mounting holes on the side facing the valve core 32 assembly 30, the same number of first magnet mounting holes as the first magnets 61 and matching in shape, thereby facilitating the installation and fixation of the first magnets 61 or the second magnets 62. This embodiment does not limit the shape of the first magnets 61 or the second magnets 62, and they can be, for example, cylindrical, square, or triangular.

[0082] In this embodiment, due to the needs of flow channel design, there are requirements for the flow rate of the medium in the branch flow channel of the valve core 32 component 30. That is to say, the flow rate of each flow channel in the valve core 32 component 30 is different, which leads to different upward thrusts generated by the medium on the valve core 32 component 30 at each flow channel position, and the valve core 32 component 30 is unevenly stressed. Therefore, Figure 9 In the structure shown, in order to overcome the problem of uneven force on the valve core 32 assembly 30, a magnet with a stronger magnetic field strength is set at the position of the flow channel where the thrust is greater.

[0083] Specifically, the second magnet 62 is arranged corresponding to the flow channel position in the valve core 32 component 30, and the valve core 32 component 30 is provided with a first flow channel and a second flow channel; the magnetic field strength of the second magnet arranged corresponding to the first flow channel position is greater than the magnetic field strength of the second magnet arranged corresponding to the second flow channel position.

[0084] The flow rate of the medium in the first flow channel is greater than that in the second flow channel. To ensure that the valve core 32 assembly 30 is subjected to more uniform force when subjected to media with different flow rates, the magnetic field strengths of the magnets corresponding to the flow channel positions are set to be different, so that the magnetic field strength of the second magnet corresponding to the first flow channel position is greater than the magnetic field strength of the second magnet corresponding to the second flow channel position.

[0085] In order to prevent the first magnet and the second magnet from rubbing against each other during the rotation of the valve core assembly, thereby preventing the magnets from being worn, the distance between the first magnet and the second magnet should be greater than a preset range.

[0086] In this embodiment, during the rotation of the valve core assembly, the distance between the first magnet and the second magnet is greater than zero.

[0087] The maintaining distance refers to the real-time distance between the first magnet and the second magnet when the valve core assembly is affected by the thrust (pressure) of the flow channel.

[0088] When setting the distance between the first magnet and the second magnet, it is necessary to determine the maximum thrust generated by the flow channel in advance. The distance will be dynamically adjusted as the force applied to the valve core assembly changes. To ensure that the magnets do not contact or rub against each other during rotation, the distance should be greater than 0, thereby ensuring that the valve core assembly will not be damaged by friction between the magnets during rotation, while maintaining the stability and reliability of the valve core assembly.

[0089] Compared with the prior art, this embodiment has the following beneficial effects:

[0090] (1) The magnetic repulsion between the first magnet 61 and the second magnet 62 can exert a reaction force on the valve core 32 assembly 30 to overcome the fluid thrust, thereby better maintaining the valve core 32 assembly 30 in a sealed position and avoiding the problem of sealing failure.

[0091] (2) By setting the magnetic field strengths of the magnets corresponding to the flow channel positions to be different, the magnetic field strength of the second magnet 62 corresponding to the first flow channel position is made greater than the magnetic field strength of the second magnet 62 corresponding to the second flow channel position, in order to overcome the problem of uneven force on the valve core 32 assembly 30.

[0092] (3) The provision of the magnetic adjustment portion 60 reduces the production accuracy requirements and assembly accuracy requirements of the sealing gasket 40 , thereby reducing the overall cost of the multi-way valve 100 and achieving a better sealing effect.

[0093] It should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation method can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0094] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multi-way valve, comprising: Valve body; A valve cover, wherein the valve cover and the valve body are combined to define an inner cavity; A valve core assembly, the valve core assembly being rotatably disposed in the inner cavity; A sealing gasket, the sealing gasket is arranged between the valve core assembly and the valve body; Characterized in that the multi-way valve further comprises: A magnetic adjustment portion, wherein the magnetic adjustment portion is arranged between the valve cover and the valve core assembly, and the magnetic adjustment portion includes a first magnet and a second magnet, wherein the first magnet is arranged on a side of the valve cover facing the valve core assembly, and the second magnet is arranged on a side of the valve core assembly facing the valve cover, and the same magnetic poles of the first magnet and the second magnet are arranged opposite to each other, and are used to generate a magnetic repulsion force to press the valve core assembly against the sealing gasket, so that the sealing gasket fits the valve core assembly and the valve body respectively.

2. The multi-way valve according to claim 1, characterized in that: The number of the first magnet and the number of the second magnet are both one, the first magnet and the second magnet are both annular, and are both coaxially arranged with the valve core assembly.

3. The multi-way valve according to claim 2, characterized in that: A first mounting groove is provided on a side of the valve cover facing the valve core assembly, and the first magnet is provided in the first mounting groove. A second mounting groove is provided on a side of the valve core assembly facing the valve cover, and the second magnet is provided in the second mounting groove. When the valve core assembly rotates, the first magnet and the second magnet rotate relative to each other.

4. The multi-way valve according to claim 2, characterized in that: During the rotation of the valve core assembly, the distance between the first magnet and the second magnet is greater than zero.

5. The multi-way valve according to claim 1, characterized in that: There are multiple first magnets. At any rotation position of the valve core assembly, the projections of the multiple first magnets on the first projection plane all fall within the projection of the second magnet on the first projection plane. The first projection plane is a plane perpendicular to the rotation axis of the valve core assembly.

6. The multi-way valve according to claim 5, characterized in that: The first magnet is a cylindrical magnet, the second magnet is an annular structure, and a first magnet mounting hole corresponding to each first magnet is provided on the side of the valve cover facing the valve core assembly; when the valve core assembly rotates, the first magnet and the second magnet rotate relative to each other.

7. The multi-way valve according to claim 1, characterized in that: There are multiple second magnets. At any rotation position of the valve core assembly, the projection of the second magnet on the first projection plane falls within the projection of the first magnet on the first projection plane. The first projection plane is a plane perpendicular to the rotation axis of the valve core assembly.

8. The multi-way valve according to claim 7, characterized in that: The second magnet is a cylindrical magnet, the first magnet is an annular structure, and a second magnet mounting hole corresponding to each second magnet is provided on the side of the valve core assembly facing the valve cover; when the valve core assembly rotates, the first magnet and the second magnet rotate relative to each other.

9. The multi-way valve according to claim 8, characterized in that: A first flow channel and a second flow channel are arranged in the valve core assembly, and the flow rate of the medium in the first flow channel is greater than the flow rate of the medium in the second flow channel; the second magnet is arranged corresponding to the flow channel position in the valve core assembly, and the magnetic field strength of the second magnet arranged corresponding to the first flow channel position is greater than the magnetic field strength of the second magnet arranged corresponding to the second flow channel position.

10. A thermal management system, characterized in that: It comprises a multi-way valve as described in any one of claims 1 to 9.

Images