water valve

Abstract

This application relates to the field of valve technology, and in particular to a water valve. The water valve includes a valve body, a first valve core, and a second valve core. The valve body has a receiving cavity, within which both the first and second valve cores are disposed. The first valve core includes a first plate and a second plate, which together form a valve core cavity for the first valve core. The second plate faces the second valve core. One of the second plate and the second valve core has a protrusion, and the other has a track portion. The protrusion extends into the track portion. When the protrusion rotates circumferentially along the receiving cavity until it contacts the side wall of the track portion, the first and second valve cores can rotate synchronously. The water valve provided by this application solves the problem of the complex rotation mode of the two valve cores in existing water valves.

Description

Technical Field

[0001] This application relates to the field of valve technology, and in particular to a water valve. Background Technology

[0002] As automotive thermal management systems become increasingly integrated, the requirements for water valves are also rising. Currently, the mechanism for driving the two valve cores within the water valve is quite complex. Utility Model Content

[0003] Therefore, it is necessary to provide a water valve to solve the problem that the existing driving mode of rotating the two valve cores in the water valve is relatively complex.

[0004] This application provides a water valve, which includes a valve body, a first valve core, and a second valve core. The valve body has a receiving cavity, and both the first valve core and the second valve core are disposed within the receiving cavity. The first valve core includes a first plate and a second plate, which together form a valve core cavity for the first valve core. The second plate faces the second valve core. One of the second plate and the second valve core has a protrusion, and the other has a track portion. The protrusion extends into the track portion. When the protrusion rotates circumferentially along the receiving cavity until it contacts the side wall of the track portion, the first valve core and the second valve core can rotate synchronously.

[0005] In one embodiment, the protrusion is set at an angle relative to the two side walls, and the angle formed is α, where 4°≤α≤15°.

[0006] In one embodiment, the thickness of the protrusion along the radial direction of the receiving cavity is T, where T ≥ 3 mm.

[0007] In one embodiment, the height of the protrusion protruding from the surface of the second plate is H, the shortest distance between the surface of the second plate and the surface of the second valve core is L, and the depth of the track portion is D, wherein H < L + D.

[0008] In one embodiment, 2mm ≤ L ≤ 3mm; and / or, 2mm ≤ D ≤ 5mm.

[0009] In one embodiment, the sidewall of the track portion along the radial direction of the receiving cavity does not contact the protrusion.

[0010] In one embodiment, the first valve core further includes at least two first partitions, which are spaced apart circumferentially along the receiving cavity and connected to the first plate and the second plate respectively. The at least two first partitions are connected to each other at one end radially along the receiving cavity to form a first channel with the first plate and the second plate. The number of the first channels is defined as n, and the included angle formed between the opposite side walls of the track portion along the circumference of the receiving cavity is β, where β = 360° / (2×n) + α.

[0011] In one embodiment, there are multiple protrusions, and the multiple protrusions are evenly spaced along the circumference of the receiving cavity; wherein the number of track portions corresponds one-to-one with the number of protrusions.

[0012] In one embodiment, the number of protrusions is less than or equal to the number of the first channels.

[0013] In one embodiment, the protrusion is connected to the side of the second plate opposite to the first partition, and at least one of the symmetrical planes of the protrusion coincides with the symmetrical plane of the first partition.

[0014] In one embodiment, the second valve core includes a main body and at least two second partitions. The at least two second partitions are spaced apart circumferentially along the receiving cavity and are respectively connected to the main body. Furthermore, the at least two second partitions are connected to each other at one end radially along the receiving cavity. The track portion is formed in the main body and has two contact surfaces circumferentially along the receiving cavity. The projection of one of the contact surfaces onto the plane containing the top surface of the second partition along the axial direction of the receiving cavity is located on the top surface of the second partition. The angle formed between the contact surface and the plane of symmetry of the second partition perpendicular to its own thickness direction is γ, where γ = α / 2.

[0015] Compared with the prior art, the water valve provided in this application, by setting a first valve core and a second valve core, and utilizing the cooperation of the protrusion and the track to achieve transmission, ensures that the first valve core and the second valve core can rotate synchronously while also performing their own functions, thereby effectively increasing the flow modes of the water valve. Furthermore, the first valve core, through the first plate and the second plate forming a valve core cavity, further facilitates the setting of the first valve core and its cooperation with structures such as the valve body. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of a water valve according to an embodiment of this application;

[0018] Figure 2 A bottom view of a water valve according to an embodiment provided in this application;

[0019] Figure 3 for Figure 2 Sectional view at PP;

[0020] Figure 4 for Figure 2 A cross-sectional view at point QQ;

[0021] Figure 5 An exploded view of the water valve portion structure of an embodiment provided in this application;

[0022] Figure 6 A schematic diagram of the structure of the first valve core according to an embodiment provided in this application;

[0023] Figure 7 A side view of a first valve core according to an embodiment provided in this application;

[0024] Figure 8 A bottom view of a first valve core according to an embodiment provided in this application;

[0025] Figure 9 A schematic diagram of the structure of the second valve core according to an embodiment provided in this application;

[0026] Figure 10 A schematic diagram of the structure of the second valve core of one embodiment provided in this application from another perspective;

[0027] Figure 11 A side view of the second valve core according to an embodiment provided in this application;

[0028] Figure 12 A top view of the second valve core according to an embodiment provided in this application;

[0029] Figure 13 A schematic diagram of the valve body of an embodiment provided in this application;

[0030] Figure 14 A schematic diagram of the flow of a water valve in a mode according to an embodiment provided in this application;

[0031] Figure 15 A schematic diagram of the flow of a water valve in mode two according to an embodiment of this application;

[0032] Figure 16 A schematic diagram of the flow of a water valve in mode three according to an embodiment of this application;

[0033] Figure 17 A schematic diagram of the flow path of a water valve in mode four according to an embodiment provided in this application. Figure 1 ;

[0034] Figure 18 A schematic diagram of the flow path of a water valve in mode four according to an embodiment provided in this application. Figure 2 ;

[0035] Figure 19 A schematic diagram of the flow path of a water valve in mode four according to an embodiment provided in this application. Figure 3 ;

[0036] Figure 20 A schematic diagram of the flow of a water valve in mode five according to an embodiment of this application;

[0037] Figure 21 A schematic diagram of the flow of a water valve in mode six according to an embodiment of this application;

[0038] Figure 22 A schematic diagram of the flow of a water valve in mode seven according to an embodiment of this application;

[0039] Figure 23 A schematic diagram of the flow of a water valve in mode eight according to an embodiment of this application;

[0040] Figure 24 A schematic diagram of the flow of a water valve in mode nine according to an embodiment of this application;

[0041] Figure 25 A schematic diagram of the flow of a water valve in mode ten according to an embodiment of this application.

[0042] The symbols in the diagram represent the following meanings:

[0043] 100. Water valve; 10. Valve body; 101. Receiving cavity; 1011. Receiving opening; 102. First flow port; 1021. First flow path; 1022. First opening; 103. Second flow port; 1031. Second flow path; 1032. Second opening; 104. First sealing groove; 105. Second sealing groove; 106. Third sealing groove; 107. Connecting hole; 11. Positioning pin; 12. Baffle; 13. Connecting part; 14. Third sealing element; 15. Protrusion; 20. First valve core; 201. First passage 21. First plate; 22. Second plate; 23. First partition; 24. Drive shaft; 241. Step; 25. Protrusion; 30. Second valve core; 301. Second channel; 302. Track section; 303. Weight reduction chamber; 304. Mounting groove; 305. Positioning hole; 31. Main body; 32. Second partition; 40. Valve cover; 50. Wear-reducing component; 60. Elastic component; 70. First sealing component; 701. First through hole; 702. Notch; 80. Second sealing component; 801. Second through hole; 90. Drive component. Detailed Implementation

[0044] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0045] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0047] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0048] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0049] Please see Figures 1-12 This application provides a water valve 100, which includes a valve body 10, a first valve core 20, and a second valve core 30. The valve body 10 has a receiving cavity 101. The first valve core 20 and the second valve core 30 are distributed along the axial direction of the receiving cavity 101 and are rotatably disposed within the receiving cavity 101. The rotation of the first valve core 20 achieves flow regulation, and the rotation of the second valve core 30 achieves flow path switching.

[0050] In this embodiment, the first valve core 20, the second valve core 30, and the receiving cavity 101 are coaxially arranged, and the first valve core 20 is disposed above the second valve core 30, that is, the first valve core 20 is disposed closer to the receiving opening 1011 of the receiving cavity 101 than the second valve core 30. Of course, in other embodiments, the first valve core 20 may also be disposed below the second valve core 30. For ease of explanation, this application only describes the example of the first valve core 20 being disposed above the second valve core 30.

[0051] Specifically, such as Figures 2-4 As shown, the valve body 10 has multiple first flow ports 102 and multiple second flow ports 103, which are spaced apart circumferentially along the receiving cavity 101. Furthermore, as... Figure 3As shown, multiple first flow ports 102 are located at the bottom end of the valve body 10. The valve body 10 has a first flow path 1021 extending axially along the receiving cavity 101. The first flow path 1021 has a first opening 1022 near the inner wall of the first valve core 20. The first flow ports 102, the first flow path 1021, and the first opening 1022 are connected in a one-to-one correspondence. Similarly, multiple second flow ports 103 are located at the bottom end of the valve body 10. The valve body 10 has a second flow path 1031 extending axially along the receiving cavity 101. The second flow path 1031 has a second opening 1032 near the end of the second valve core 30. The second flow ports 103, the second flow path 1031, and the second opening 1032 are connected in a one-to-one correspondence. The multiple first flow ports 102 surround the multiple second flow ports 103, and the first flow ports 102 and the second flow ports 103 are not interconnected.

[0052] To facilitate the setting of the first flow path 1021, in one embodiment, the valve body 10 is provided with a protrusion 15 protruding from its outer peripheral wall, and the first flow path 1021 is provided on the protrusion 15.

[0053] At the same time, such as Figure 3 , Figure 4 , Figure 6 and Figure 10 As shown, the first valve core 20 has a first channel 201, which connects to different first flow ports 102 as the first valve core 20 rotates, for proportional adjustment of fluid flow rate. The second valve core 30 has a second channel 301, which connects to different second flow ports 103 as the second valve core 30 rotates, for switching fluid flow paths. That is, one end of the first flow path 1021 is connected to the first channel 201 through a first opening 1022 in the inner wall of the receiving cavity 101, and the other end is connected to the outside through the first flow port 102. One end of the second flow path 1031 is connected to the second channel 301 through a second opening 1032 in the bottom wall of the receiving cavity 101, and the other end is connected to the outside through the second flow port 103. Thus, the combination of the first valve core 20 and the second valve core 30 allows the water valve 100 to have more flow modes and usage scenarios.

[0054] For example, in switching mode, the first channel 201 can be connected to two first flow ports 102. By rotating the first valve core 20, different first flow ports 102 can be switched, enabling flow through more first flow ports 102 and giving the water valve 100 more connection modes. Furthermore, in flow regulation mode, for a first flow port 102 that is directly connected to two first channels 201 simultaneously, part of the flow in the first flow port 102 is fluid Q1 from one first channel 201, and the other part is fluid Q2 from the other first channel 201. The relative values ​​of Q1 and Q2 can be flexibly adjusted. For example, if part of the fluid in the first flow port 102 is fluid at temperature T1 from one first channel 201, and the other part is fluid at temperature T2 from the other first channel 201, then by rotating the first valve core 20, the relative ratio of the fluid at temperature T1 to the fluid at temperature T2 in the first flow port 102 can be adjusted, thereby flexibly adjusting the overall temperature of the fluid in the first flow port 102.

[0055] To facilitate the proportional adjustment of the fluid by the first valve core 20, in one embodiment, such as Figure 2 and Figure 6 As shown, the number of first flow ports 102 is m, the number of first channels 201 is n, and the included angle formed between the two opposite side walls of the first channel 201 along the rotation direction of the first valve core 20 is A, where n = m / 2 and A = 360° / n, where m is an even number greater than or equal to 4. That is, multiple first channels 201 divide the valve core cavity of the first valve core 20 equally. Thus, the structure of the first valve core 20 is simple and easy to process, which can effectively reduce the processing cost of the first valve core 20. Moreover, when the first valve core 20 rotates by a preset angle, the first channel 201 can connect with different first flow ports 102, which can play the role of flow channel switching. During the rotation of the preset angle, the first channel 201 can achieve proportional adjustment.

[0056] Specifically, multiple first flow ports 102 are evenly spaced along the circumference of the receiving cavity 101. This allows the first flow ports 102 to better cooperate with the first channel 201, reducing design complexity and enabling proportional adjustment. Similarly, multiple second flow ports 103 are evenly spaced along the circumference of the receiving cavity 101, facilitating the switching of the flow path by the second valve core 30 and reducing design complexity.

[0057] In one embodiment, the first valve core 20 includes a first plate 21, a second plate 22, and at least two first partition plates 23. The first plate 21 and the second plate 22 are spaced apart axially along the receiving cavity 101, and the first plate 21 and the second plate 22 form a valve core cavity of the first valve core 20. The first plate 21 is located on the side of the second plate 22 away from the second valve core 30, and the second plate 22 is directly opposite the second valve core 30. The at least two first partition plates 23 are spaced apart circumferentially along the receiving cavity 101 and are respectively connected to the first plate 21 and the second plate 22. Furthermore, one end of the at least two first partition plates 23 is connected to each other radially along the receiving cavity 101 to form a first channel 201 with the first plate 21 and the second plate 22. This simplifies the structure of the first valve core 20 and reduces the processing difficulty.

[0058] Specifically, the first opening 1022 and the first channel 201 are both located between the first plate 21 and the second plate 22, so as to ensure that the multiple first openings 1022 can only be connected through the first channel 201.

[0059] For example, in this embodiment, the number of first flow ports 102 is four, and the number of first channels 201 is two, with A = 180°. Of course, in other embodiments, the number of first flow ports 102 can also be six, in which case the number of first channels 201 is three, and A = 120°. In addition, the number of first flow ports 102 can also be eight or ten, etc., which can be reasonably set according to needs.

[0060] This application takes the example of setting two first channels 201 on the first valve core 20. In this case, there are also two first partitions 23, and the angle formed by the two first partitions 23 along the circumference of the receiving cavity 101 is 180°, thus dividing the cavity of the first valve core 20 into two equal first channels 201. Furthermore, when the first partition 23 rotates between two adjacent first flow ports 102, each first channel 201 connects to both first flow ports 102, achieving full opening of the corresponding flow ports. When the first partition 23 rotates to a position corresponding to one of the first flow ports 102, each first channel 201 connects to a complete first flow port 102 and portions of both first flow ports 102, thereby achieving proportional adjustment.

[0061] However, this is not the only option. In other embodiments, the number of first partitions 23 can also be set to three. In this case, the angle formed between adjacent first partitions 23 is 120°, thereby forming three first channels 201 on the first valve core 20. In addition, the number of first partitions 23 can also be set to four or five, etc., which can be reasonably set according to actual needs.

[0062] To ensure the sealing of the first valve core 20 during rotation, the end of the first partition 23 near the receiving cavity 101, the outer periphery of the first plate 21, and the outer periphery of the second plate 22 are in a movable sealing fit with the inner wall of the receiving cavity 101. This ensures the independence of each first channel 201 when the first partition 23 rotates between two adjacent first flow ports 102, preventing leakage and improving the reliability of the water valve 100 structure.

[0063] Furthermore, such as Figures 3-5 As shown, the water valve 100 also includes a first sealing element 70, which is disposed between the first valve core 20 and the side wall of the receiving cavity 101, and connected to the valve body 10. The first sealing element 70 provides a sealing fit with both the first valve core 20 and the side wall of the receiving cavity 101. The first sealing element 70 has multiple first through holes 701, each of which communicates with a corresponding first flow port 102. This further improves the sealing performance when the first valve core 20 rotates.

[0064] To prevent the first seal 70 from rotating relative to the valve body 10, which could lead to misalignment between the first through hole 701 and the first flow port 102 and affect the normal flow of fluid, in one embodiment, such as... Figure 5 and Figure 13 As shown, the first seal 70 has a notch 702, and a baffle 12 protrudes from the side wall of the receiving cavity 101 towards the axis. The baffle 12 is inserted into the notch 702 and is circumferentially limited and engaged with the side of the notch 702 along the receiving cavity 101. In this way, the engagement between the baffle 12 and the notch 702 prevents the first seal 70 from rotating, ensuring reliable installation of the first seal 70.

[0065] Specifically, in this embodiment, there are two baffles 12, and the two baffles 12 are spaced apart along the circumference of the receiving cavity 101, thereby forming a first sealing groove 104 with the inner wall of the receiving cavity 101. The first sealing member 70 is installed in the first sealing groove 104, and the two opposite sides at the notch 702 respectively abut against the two baffles 12 to further improve the installation stability of the first sealing member 70.

[0066] To facilitate the switching of fluid flow paths for the second valve core 30, in one embodiment, such as Figure 10As shown, the second valve core 30 includes a main body 31 and at least two second partitions 32. The at least two second partitions 32 are spaced apart circumferentially along the receiving cavity 101 and are respectively connected to the main body 31. Furthermore, the at least two second partitions 32 are connected to each other at one end radially along the receiving cavity 101 to form a second channel 301 with the main body 31. This simplifies the structure of the second valve core 30 and reduces manufacturing difficulty. Since the second flow port 103 is located on the bottom wall of the receiving cavity 101, the main body 31 can have a cavity recessed away from the second flow port 103. The second partitions 32 are disposed within this cavity to form the second channel 301 with the main body 31. That is, the opening of the second channel 301 faces the bottom end of the valve body 10.

[0067] Specifically, this embodiment provides four second flow ports 103 and one second channel 301. By rotating the second valve core 30, communication between the second channel 301 and different second flow ports 103 can be achieved. At this time, the included angle formed by the two second partitions 32 along the circumference of the receiving cavity 101 is 180°, thus improving the reliability when switching flow ports. Since this embodiment only provides one second channel 301 on the second valve core 30, and the second channel 301 is located at half of the second valve core 30, therefore, as... Figure 9 and Figure 11 As shown, to reduce costs, a weight-reducing cavity 303 can be provided at the other half of the second valve core 30, thereby reducing the weight and material cost of the second valve core 30. That is, in this embodiment, the two second partitions 32 separate the second channel 301 and the weight-reducing cavity 303, making the structure of the second valve core 30 more reliable. Of course, in other embodiments, the number of second channels 301 can also be set to multiple, which can be reasonably set according to actual needs.

[0068] Furthermore, such as Figures 3-5 As shown, the water valve 100 also includes a second sealing element 80. The second sealing element 80 is disposed between the second valve core 30 and the inner wall of the receiving cavity 101, and is connected to the valve body 10. The second sealing element 80 is in sealing cooperation with both the second valve core 30 and the inner wall of the receiving cavity 101. Since the second flow port 103 is opened on the bottom wall of the receiving cavity 101 in this embodiment, the second sealing element 80 is disposed between the second valve core 30 and the bottom wall of the receiving cavity 101, and is in sealing cooperation with both the second valve core 30 and the bottom wall of the receiving cavity 101. The second sealing element 80 has multiple second through holes 801, each of which communicates with a corresponding second flow port 103. This further improves the sealing performance when the second valve core 30 rotates.

[0069] To improve the installation stability of the second seal 80, in one embodiment, the bottom wall of the receiving cavity 101 is recessed to form a second sealing groove 105, and the second seal 80 is installed in the second sealing groove 105, thereby preventing the second seal 80 from moving and ensuring the corresponding communication between the second through hole 801 and the second flow port 103.

[0070] In one embodiment, such as Figure 3 and Figure 4 As shown, the water valve 100 also includes a valve cover 40, which is disposed at the receiving opening 1011 of the receiving cavity 101 and connected to the valve body 10. At least a portion of the valve cover 40 abuts against the first valve core 20 along the axial direction of the receiving cavity 101, and cooperates with the valve body 10 to clamp the first valve core 20 and the second valve core 30. Thus, the second valve core 30 can abut against the bottom wall (second sealing element 80) of the receiving cavity 101 to achieve a planar seal, thereby ensuring that no leakage occurs between the second channel 301 and the second flow port 103.

[0071] To enhance the structural strength of the valve cover 40, in one embodiment, the valve cover 40 is at least partially recessed toward the interior of the receiving cavity 101 to form an arc-shaped structure, thereby enhancing strength through the arc-shaped curved surface structure and facilitating the contact and limiting between the valve cover 40 and the first valve core 20.

[0072] Since the first valve core 20 needs to rotate during operation, to avoid wear caused by hard friction between the valve cover 40 and the first valve core 20, which could lead to axial movement of the first valve core 20 and the second valve core 30, causing sealing failure between the second valve core 30 and the valve body 10, in one embodiment, such as... Figure 3 and Figure 4 As shown, the water valve 100 also includes a friction-reducing component 50, which is disposed between the valve cover 40 and the first valve core 20 and abuts against both the valve cover 40 and the first valve core 20. It is easy to understand that the friction coefficient of the friction-reducing component 50 is less than that of the valve cover 40 and the first valve core 20. By providing the friction-reducing component 50, the wear between the valve cover 40 and the second valve core 30 can be effectively reduced.

[0073] Specifically, the wear-reducing component 50 can be configured as a PTFE (Polytetrafluoroethylene) component, thereby effectively reducing the cost of the wear-reducing component 50. When the wear-reducing component 50 is a PTFE component, two components can be used, and the two wear-reducing components 50 abut against each other to further improve the wear-reducing effect. Of course, in other embodiments, the wear-reducing component 50 can also be configured as a graphite component, and the specific configuration can be reasonably set according to actual needs.

[0074] However, during use, the second seal 80 may harden, leading to a decrease in sealing performance. Simultaneously, the connection between the first valve core 20 and the second valve core 30 is prone to wear due to hard friction. These factors increase the risk of the second valve core 30 moving axially along the receiving cavity 101, potentially causing seal failure between the second channel 301 and the second flow port 103. Therefore, in one embodiment, as... Figure 3 and Figure 4 As shown, the water valve 100 also includes an elastic element 60, which is disposed between the first valve core 20 and the second valve core 30. Both ends of the elastic element 60 abut against and apply force to the first valve core 20 and the second valve core 30, respectively. Thus, by providing the elastic element 60, not only can the elastic force ensure a tight fit between the second valve core 30 and the second sealing element 80, but the elastic element 60 can also provide elastic compensation after long-term operation of the water valve 100, extending the service life of the water valve 100.

[0075] Preferably, in this embodiment, the elastic element 60 is a wave spring, which typically has a thin spiral structure with alternating peaks and troughs along its extension direction. Since the first valve core 20 and the second valve core 30 exert a torsional force on the elastic element 60 during rotation, if this torsional force gradually increases with the rotation of the first valve core 20 and the second valve core 30, it can easily cause the elastic element 60 to break and fail. Furthermore, the elastic element 60 may also drive the first valve core 20 and the second valve core 30 to rotate, leading to sealing failure. Therefore, by setting the elastic element 60 as a wave spring, point contact can be formed between the elastic element 60 and the first valve core 20 and the second valve core 30, thereby reducing the torsional force on the elastic element 60. Alternatively, the elastic element 60 can also be a helical spring or a leaf spring, etc. Further, a mounting groove 304 is formed in the recessed surface of the second valve core 30 near the first valve core 20. A portion of the elastic element 60 is installed within the mounting groove 304, which limits the elastic element 60 and improves its installation stability.

[0076] In one embodiment, such as Figure 1 , Figure 3 and Figure 4 As shown, the water valve 100 also includes a drive element 90, which drives the first valve core 20 and the second valve core 30 to rotate. To reduce the driving cost of the water valve 100, only one drive element 90 can be provided. In this case, one of the first valve core 20 and the second valve core 30 is set as the active valve core, and the other is set as the driven valve core, so that the active valve core drives the driven valve core to rotate. Based on this, to achieve transmission between the active valve core and the driven valve core, as follows... Figures 6-12As shown, one of the first valve core 20 (second plate 22) and the second valve core 30 has a protrusion 25, and the other has a track 302. The protrusion 25 extends into the track 302 and can rotate within the track 302 along the circumference of the receiving cavity 101. When the protrusion 25 rotates along the circumference of the receiving cavity 101 to contact the side wall of the track 302, the first valve core 20 and the second valve core 30 can rotate synchronously. Thus, by setting the first valve core 20 and the second valve core 30, and utilizing the cooperation of the protrusion 25 and the track 302 to achieve transmission, the first valve core 20 and the second valve core 30 can achieve synchronous rotation while also fulfilling their respective functions, thereby effectively increasing the flow patterns of the water valve 100. Furthermore, the valve core cavity formed by the first plate 21 and the second plate 22 further facilitates the setting of the first valve core 20 and its cooperation with structures such as the valve body 10.

[0077] In this embodiment, the first valve core 20 is designated as the active valve core, and the second valve core 30 is designated as the driven valve core. A protrusion 25 is provided on the first valve core 20, and a track portion 302 is provided on the second valve core 30. This will be used as an example for explanation. That is, the output end of the drive member 90 is connected to the first valve core 20 to drive the first valve core 20 to rotate. Specifically, the first valve core 20 also includes a drive shaft 24, which passes through and connects the first plate 21 and the second plate 22. Multiple first partitions 23 are interconnected via the drive shaft 24. One end of the drive shaft 24 passes through the valve cover 40 and is connected to the drive member 90, while the other end abuts against the second valve core 30 to apply a force to the second valve core 30 in the axial direction along the receiving cavity 101.

[0078] The protrusion 25 and the track 302 can both be shaped like fan rings, that is, closed shapes formed by two concentric circular arcs and two radii. This not only facilitates the rotation of the protrusion 25 within the track 302, but also facilitates the machining of both. This is easy to understand, as... Figure 8 As shown, the two radii at both ends of the fan ring have an included angle, that is, the two opposite side walls of the protrusion 25 distributed along the circumference of the receiving cavity 101 are set at an included angle, and the included angle is defined as α, 4°≤α≤15°. Thus, by setting 4°≤α≤15°, this application can ensure the width of the protrusion 25 along the circumference of the receiving cavity 101, thereby effectively improving the overall structural strength of the protrusion 25 and significantly reducing the risk of the protrusion 25 breaking due to force during the rotation of the first valve core 20 and the second valve core 30 in cooperation with the track part 302. At the same time, it can also avoid the protrusion 25 being too wide, which helps to reduce material costs while ensuring functional reliability, and reduces the probability of friction between it and the second valve core 30.

[0079] Optionally, the value of α can be 4°, 6°, 8°, 10°, 12°, 14°, or 15°, etc.

[0080] Furthermore, in one embodiment, as Figure 8 As shown, the thickness of the protrusion 25 along the radial direction of the receiving cavity 101 is T, where T ≥ 3 mm. This further enhances the structural strength of the protrusion 25.

[0081] The value of T can be 3mm, 3.5mm or 4mm, as long as the protrusion 25 does not interfere with other components in the water valve 100.

[0082] To further enhance the structural strength of the protrusion 25, in one embodiment, the protrusion 25 is connected to the side of the second plate 22 opposite to the first partition 23, and the symmetry plane of at least one protrusion 25 coincides with the symmetry plane of the first partition 23. That is, at least one protrusion 25 is located directly below a corresponding first partition 23. In this way, the protrusion 25 can effectively enhance the structural strength using the first partition 23, and the protrusion 25 is also easier to accurately position using the first partition 23 during processing and assembly, thereby reducing the processing and assembly difficulty of the first valve core 20.

[0083] The drive shaft 24, the first plate 21, the second plate 22, the first partition 23, and the protrusion 25 can be configured as an integrally formed structure to further enhance the overall structural strength.

[0084] Since the formation of the first channel 201 requires at least two first partitions 23, when the number of protrusions 25 is one, the protrusions 25 can be located directly below any one of the first partitions 23.

[0085] In other embodiments, there are multiple protrusions 25, and these protrusions 25 are evenly spaced along the circumference of the receiving cavity 101. The number of track portions 302 corresponds one-to-one with the number of protrusions 25. This ensures that the first valve core 20 and the second valve core 30 experience uniform force during transmission, thereby improving transmission reliability. Simultaneously, since the multiple first partitions 23 are also evenly distributed along the circumference of the receiving cavity 101, each protrusion 25 can be positioned directly below a corresponding first partition 23.

[0086] Furthermore, the number of protrusions 25 is less than or equal to the number of first channels 201. That is, the number of protrusions 25 is less than or equal to the number of first partitions 23 to facilitate the setting of the protrusions 25. At the same time, since the track section 302 needs a certain angle for the protrusions 25 to rotate, thereby realizing the switching of the first channel 201 to the first flow port 102, by setting the number of protrusions 25 to be less than or equal to the number of first channels 201 (first partitions 23), the angle range of the track section 302 can be guaranteed while avoiding interference between the track sections 302, thereby avoiding the situation where the first valve core 20 does not rotate into place, resulting in the inability to successfully switch the flow port.

[0087] It should be noted that when the number of protrusions 25 is less than the number of first partitions 23, only one protrusion 25 may be placed directly below the first partition 23, and the remaining protrusions 25 may be evenly distributed at a preset angle. Of course, multiple protrusions 25 may also be placed directly below each corresponding first partition 23.

[0088] In one embodiment, such as Figure 12 As shown, the included angle formed between the two opposing side walls of the track section 302 along the circumference of the receiving cavity 101 is β, where β = 360° / (2×n) + α. This ensures that while the second valve core 30 moves into position and remains stationary, the first valve core 20 can rotate within the angular range of the track section 302, enabling smooth switching of the first channel 201 to different first flow ports 102, thereby achieving flow path switching and proportional adjustment.

[0089] Furthermore, in one embodiment, the track portion 302 is formed in the main body portion 31. The track portion 302 has two contact surfaces along the circumference of the receiving cavity 101, and the projection of one of the contact surfaces along the axial direction of the receiving cavity 101 onto the plane containing the top surface of the second partition 32 is located on the top surface of the second partition 32. The angle formed between this contact surface and the plane of symmetry of the second partition 32 perpendicular to its own thickness direction is γ, where γ = α / 2. This facilitates the determination of the position of the track portion 302, thereby further reducing the design difficulty of the fit between the first valve core 20 and the second valve core 30, and also improving the structural strength of the track portion 302. The width of the portion of the track portion 302 projected onto the top surface of the second partition 32 is greater than half the thickness of the second partition 32.

[0090] For example, this embodiment provides two protrusions 25, which are centrally symmetrical about the axis of the receiving cavity 101 and are located directly below the two first partitions 23. In this case, the angle of the track portion 302 is 90°+α. The plane of symmetry of the second partition 32 is defined as the first plane of symmetry, and the plane perpendicular to the centerline of the second partition 32 is defined as the second plane of symmetry. The first and second planes of symmetry intersect at the axis of the second valve core 30, so the angle between the first and second planes of symmetry is 90°. Since the width of the portion of the track portion 302 projected onto the top surface of the second partition 32 is greater than half the thickness of the second partition 32, the angles formed between the two contact surfaces on the track portion 302 and the first and second planes of symmetry are both α / 2, making the design simpler.

[0091] Since this embodiment provides two protrusions 25, the number of track sections 302 is correspondingly two. When the track sections 302 are installed, one will partially be located above the second channel 301, and the other will partially be located above the weight-reducing cavity 303. In this case, the track section 302 located above the weight-reducing cavity 303 can communicate with the cavity, thereby reducing processing difficulty. That is, the track section 302 is in the form of a through groove and has no bottom wall, thus avoiding wear caused by contact between the end face of the protrusion 25 and the bottom wall of the track section 302. The track section 302 located above the second channel 301 has a bottom wall separated from the second channel 301. To avoid contact between the end face of the protrusion 25 and the bottom wall of this track section 302, in one embodiment, such as... Figure 4 , Figure 7 and Figure 11 As shown, the height of the protrusion 25 protruding from the surface of the second plate 22 is H, the shortest distance between the surface of the second plate 22 and the surface of the second valve core 30 is L, and the depth of the track portion 302 is D, where H < L + D. That is, there is a gap between the end face of the protrusion 25 away from the first valve core 20 and the bottom of the groove of the track portion 302 to avoid contact between them, thereby reducing the probability of wear between the protrusion 25 and the track portion 302. At the same time, it also prevents the first valve core 20 from applying excessive pressure to the second valve core 30 through the protrusion 25, which could lead to excessive torque in the second valve core 30 and reduced transmission efficiency.

[0092] Specifically, 2mm≤L≤3mm and 2mm≤D≤5mm can be set. By reasonably setting the shortest distance between the surface of the second plate 22 and the surface of the second valve core 30 and the depth of the track 302, it is convenient to set the protrusion 25, thereby reducing the difficulty of matching the first valve core 20 and the second valve core 30.

[0093] Optionally, the value of L can be 2mm, 2.5mm or 3mm, etc., and the value of D can be 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm or 5mm, etc., which will not be listed here.

[0094] To further reduce the probability of the protrusion 25 contacting the track portion 302 when rotating within the track portion 302, in one embodiment, the sidewall of the track portion 302 along the radial direction of the receiving cavity 101 does not contact the protrusion 25. This further reduces the probability of wear between the two and facilitates the rotation of the first valve core 20 and the second valve core 30.

[0095] It should be noted that "non-contact" here refers to the following: the side wall of the track portion 302 radially close to the rotation center of the receiving cavity 101 and the side wall of the protrusion 25 radially close to the rotation center of the receiving cavity 101 are separated by a gap, and / or the side wall of the track portion 302 radially away from the rotation center of the receiving cavity 101 and the side wall of the protrusion 25 radially away from the rotation center of the receiving cavity 101 are separated by a gap. The gap between the side wall of the track portion 302 and the side wall of the protrusion 25 can be set to approximately 0.1 mm. Furthermore, for ease of processing, the track portion 302 can be positioned on the outer periphery of the second valve core 30. In this case, since the track portion 302 does not have a side wall radially away from the rotation center of the receiving cavity 101, only the side wall of the track portion 302 radially close to the rotation center of the receiving cavity 101 and the side wall of the protrusion 25 radially close to the rotation center of the receiving cavity 101 need to be separated by a gap, while ensuring that the side wall of the protrusion 25 radially away from the rotation center of the receiving cavity 101 does not extend beyond the outer periphery of the second valve core 30.

[0096] In one embodiment, such as Figure 4 As shown, a positioning post 11 protrudes from the bottom wall of the receiving cavity 101, extending axially along the receiving cavity 101. A positioning hole 305 is provided on the second valve core 30, which is fitted onto the positioning post 11 through the positioning hole 305 and rotatably engages with it. This facilitates the installation of the second valve core 30 and improves the coaxiality of its rotation.

[0097] Furthermore, at least a portion of the drive shaft 24 extends into the positioning hole 305, and the end face of the drive shaft 24 is spaced apart from the end face of the positioning post 11. This facilitates the positioning of the first valve core 20 and avoids friction caused by contact between the drive shaft 24 and the positioning post 11, thereby preventing an increase in the rotational resistance of the first valve core 20.

[0098] Specifically, the drive shaft 24 is provided with a step 241, which abuts against the second valve core 30 along the axial direction of the receiving cavity 101, so that the end face of the drive shaft 24 is spaced apart from the end face of the positioning post 11. In this way, it can be ensured that the drive shaft 24 does not contact the positioning post 11, and at the same time, it can also be ensured that the protrusion 25 does not contact the bottom wall of the track portion 302 along the axial direction of the receiving cavity 101, further improving the smoothness of the rotation of the first valve core 20.

[0099] In one embodiment, such as Figure 5 As shown, the water valve 100 also includes a third sealing element 14. A third sealing groove 106 is formed by recessing one end face of the valve body 10 along its own axial direction, and the third sealing element 14 is installed in the third sealing groove 106. In this way, when the valve body 10 is installed with an external structure, the sealing of the mounting surface can be ensured by the third sealing element 14, avoiding leakage at the first flow port 102 and the second flow port 103.

[0100] In one embodiment, such as Figure 1 As shown, the outer wall of the valve body 10 protrudes in a direction away from its own axis to form a connecting portion 13. A connecting hole 107 is provided on the connecting portion 13, which is used for connecting the valve body 10. This facilitates the connection of the valve body 10 with external structures.

[0101] Specifically, there are multiple connecting parts 13, and one connecting part 13 can be provided between every two protrusions 15, which are evenly distributed to improve the overall structural strength.

[0102] This application specifically provides ten flow modes for the water valve 100, and takes the example of a valve body 10 having four first flow ports 102 and four second flow ports 103, a first valve core 20 having two first channels 201, and a second valve core 30 having one second channel 301. Furthermore, the four first flow ports 102 are defined as M1, M2, M3, and M4; the four second flow ports 103 are defined as N1, N2, N3, and N4; and the two first channels 201 are defined as W1 and W2. Figures 14-25 This is a schematic diagram of the circulation pattern. The two sides of the first partition 23 are the two first channels 201, and the shaded part is the second channel 301.

[0103] The flow pattern of water valve 100 is as follows:

[0104] Mode 1

[0105] like Figure 14 As shown, when the water valve 100 is in mode one, the first partition 23 is located between M1 and M2, and between M3 and M4. W1 connects M1 and M4 to form a flow path, and W2 connects M2 and M3 to form a flow path.

[0106] Meanwhile, in the first mode, the second channel 301 of the second valve core 30 connects N3 and N4 to form a flow path, while N1 and N2 are blocked and no flow occurs. At this time, the protrusion 25 on the first valve core 20 contacts the side wall of the track portion 302 along the circumferential side of the receiving cavity 101.

[0107] Mode 2

[0108] like Figure 15As shown, Mode 2 is the transitional state of the first valve core 20 rotating counterclockwise from Mode 1 until the protrusion 25 contacts the side wall of the track section 302. When the water valve 100 is in Mode 2, the first partition 23 is correspondingly set with M2 and M4. W1 connects M1, M2, and M4 to form a flow path, and W2 connects M2, M3, and M4 to form another flow path. Furthermore, M2 and M4 contain a mixture of fluids with temperature T1 and fluids with temperature T2, thus achieving temperature regulation of the fluids in M2 and M4.

[0109] Meanwhile, since the protrusion 25 has not yet contacted the side wall on the other side of the track 302 when the first valve core 20 rotates, the position of the second valve core 30 remains unchanged in mode two. That is, the second channel 301 of the second valve core 30 connects N3 and N4 to form a flow path, while N1 and N2 are blocked and do not flow.

[0110] Mode 3

[0111] like Figure 16 As shown, when the water valve 100 is in mode three, the protrusion 25 rotates counterclockwise until it contacts the side wall on the other side of the track 302. At this time, the first partition 23 is located between M1 and M4, and between M2 and M3. W1 connects M1 and M2 to form a flow path, and W2 connects M3 and M4 to form a flow path.

[0112] Meanwhile, in mode three, the first valve core 20 just rotates to contact the side wall on the other side of the track section 302, so the position of the second valve core 30 remains unchanged. That is, the second channel 301 of the second valve core 30 connects N3 and N4 to form a flow path, while N1 and N2 are blocked and do not flow.

[0113] Mode 4

[0114] like Figure 17 , Figure 18 and Figure 19 As shown, mode four is the transition state of the second valve core 30 when switching flow paths. When the water valve 100 is in mode four, the first valve core 20 drives the second valve core 30 to rotate counterclockwise through the cooperation of the protrusion 25 and the track 302. This causes the area of ​​the second channel 301 of the second valve core 30 corresponding to N3 to gradually decrease, while the area corresponding to N1 to gradually increase. That is, in mode four, the second channel 301 is in a state where it is connected to N1, N3 and N4, while N2 is blocked and no flow occurs.

[0115] During this period, after driving the second valve core 30 to rotate to a predetermined position, the first valve core 20 can rotate clockwise again until the first partition 23 is located between M1 and M4, and between M2 and M3, so that W1 connects M1 and M2 to form a flow path, and W2 connects M3 and M4 to form a flow path.

[0116] Mode 5

[0117] like Figure 20 As shown, when the water valve 100 is in mode five, the first valve core 20 drives the second valve core 30 to rotate into position, completing the switching of the flow path. At this time, the second channel 301 connects N1 and N4 to form a flow path, while N2 and N3 are blocked and do not flow.

[0118] Similarly, after driving the second valve core 30 to rotate to a predetermined position, the first valve core 20 can rotate clockwise again until the first partition 23 is located between M1 and M4, and between M2 and M3, so that W1 connects M1 and M2 to form a flow path, and W2 connects M3 and M4 to form a flow path.

[0119] Mode Six

[0120] like Figure 21 As shown, mode six is ​​the transitional state where the first valve core 20 rotates counterclockwise from mode five until the protrusion 25 contacts the side wall of the track section 302 again. When the water valve 100 is in mode six, the first partition 23 is correspondingly set with M1 and M3. W1 connects M1, M2, and M3 to form a flow path, and W2 connects M1, M3, and M4 to form a flow path. Furthermore, M1 and M3 contain a mixture of fluids with temperature T1 and fluids with temperature T2, thus achieving temperature regulation of the fluids in M1 and M3.

[0121] Meanwhile, in mode six, the position of the second valve core 30 remains unchanged from that in mode five. That is, the second channel 301 of the second valve core 30 connects N1 and N4 to form a flow path, while N2 and N3 are blocked and do not flow.

[0122] Mode 7

[0123] like Figure 22 As shown, when the water valve 100 is in mode seven, the protrusion 25 rotates counterclockwise until it contacts the side wall of the track 302 on the other side again. At this time, the first partition 23 is located between M3 and M4, and between M1 and M2. W1 connects M1 and M4 to form a flow path, and W2 connects M2 and M3 to form a flow path.

[0124] Meanwhile, since in mode seven, the first valve core 20 just rotates to contact the side wall on the other side of the track section 302, the position of the second valve core 30 remains unchanged from that in mode six. That is, the second channel 301 of the second valve core 30 connects N1 and N4 to form a flow path, while N2 and N3 are blocked and do not flow.

[0125] Mode 8

[0126] like Figure 23As shown, when the water valve 100 is in mode eight, the first valve core 20 drives the second valve core 30 to rotate back to its original position based on mode seven, completing the flow path switching. At this time, the second channel 301 connects N1 and N2 to form a flow path, while N3 and N4 are blocked and do not flow.

[0127] Similarly, after driving the second valve core 30 to rotate to a predetermined position, the first valve core 20 can rotate clockwise again until the first partition 23 is located between M1 and M2, and between M3 and M4, so that W1 connects M1 and M4 to form a flow path, and W2 connects M2 and M3 to form a flow path.

[0128] Mode Nine

[0129] like Figure 24 As shown, mode nine is the transitional state where the first valve core 20 rotates counterclockwise from mode eight until the protrusion 25 contacts the side wall of the track section 302 again. When the water valve 100 is in mode nine, the first partition 23 is correspondingly set with M2 and M4. W1 connects M1, M2, and M4 to form a flow path, and W2 connects M2, M3, and M4 to form another flow path. Furthermore, M2 and M4 contain a mixture of fluids with temperature T1 and fluids with temperature T2, thus achieving temperature regulation of the fluids in M2 and M4.

[0130] Meanwhile, in mode nine, the position of the second valve core 30 remains unchanged from that in mode eight. That is, the second channel 301 of the second valve core 30 connects N1 and N2 to form a flow path, while N3 and N4 are blocked and do not flow.

[0131] Mode 10

[0132] like Figure 25 As shown, when the water valve 100 is in mode ten, the protrusion 25 rotates counterclockwise until it contacts the side wall of the track 302 on the other side again. At this time, the first partition 23 is located between M1 and M4, and between M2 and M3. W1 connects M1 and M2 to form a flow path, and W2 connects M3 and M4 to form a flow path.

[0133] Meanwhile, in mode ten, the first valve core 20 just rotates to contact the side wall on the other side of the track section 302, so the position of the second valve core 30 remains unchanged from that in mode nine. That is, the second channel 301 of the second valve core 30 connects N1 and N2 to form a flow path, while N3 and N4 are blocked and do not flow.

[0134] This application also provides an automotive thermal management system, which includes the water valve 100 of any of the above embodiments.

[0135] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0136] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A water valve, characterized in that, It includes a valve body (10), a first valve core (20) and a second valve core (30), wherein the valve body (10) has a receiving cavity (101), and the first valve core (20) and the second valve core (30) are both disposed in the receiving cavity (101); The first valve core (20) includes a first plate (21) and a second plate (22), the first plate (21) and the second plate (22) forming a valve core cavity of the first valve core (20); the second plate (22) is directly opposite the second valve core (30); One of the second plate (22) and the second valve core (30) is provided with a protrusion (25), and the other is provided with a track (302). The protrusion (25) extends into the track (302). When the protrusion (25) rotates circumferentially along the receiving cavity (101) to contact the side wall of the track (302), the first valve core (20) and the second valve core (30) can rotate synchronously.

2. The water valve according to claim 1, characterized in that, The protrusion (25) is set at an angle relative to the two side walls, and the angle formed is α, 4°≤α≤15°.

3. The water valve according to claim 1, characterized in that, The thickness of the protrusion (25) along the radial direction of the receiving cavity (101) is T, where T ≥ 3 mm.

4. The water valve according to claim 1, characterized in that, The height of the protrusion (25) protruding from the surface of the second plate (22) is H, the shortest distance between the surface of the second plate (22) and the surface of the second valve core (30) is L, and the depth of the track (302) is D, wherein H < L + D.

5. The water valve according to claim 4, characterized in that, 2mm≤L≤3mm; and / or, 2mm≤D≤5mm.

6. The water valve according to claim 1, characterized in that, The sidewall of the track section (302) along the radial direction of the receiving cavity (101) does not contact the protrusion (25).

7. The water valve according to any one of claims 1-6, characterized in that, The first valve core (20) further includes at least two first partitions (23), which are spaced apart circumferentially along the receiving cavity (101) and connected to the first plate body (21) and the second plate body (22) respectively. Furthermore, the at least two first partitions (23) are connected to each other at one end radially along the receiving cavity (101) to form a first channel (201) with the first plate body (21) and the second plate body (22). Wherein, the number of the first channels (201) is defined as n, and the included angle formed between the two opposite side walls of the track part (302) along the circumference of the receiving cavity (101) is β, β=360° / (2×n)+α.

8. The water valve according to claim 7, characterized in that, The number of the protrusions (25) is multiple, and the multiple protrusions (25) are evenly spaced along the circumference of the receiving cavity (101); The number of track sections (302) is set in a one-to-one correspondence with the number of protrusions (25).

9. The water valve according to claim 8, characterized in that, The number of protrusions (25) is less than or equal to the number of the first channels (201).

10. The water valve according to claim 7, characterized in that, The protrusion (25) is connected to the side of the second plate (22) away from the first partition (23), and at least one of the symmetrical planes of the protrusion (25) coincides with the symmetrical plane of the first partition (23).

11. The water valve according to claim 7, characterized in that, The second valve core (30) includes a main body (31) and at least two second partitions (32). The at least two second partitions (32) are arranged circumferentially around the receiving cavity (101) and are respectively connected to the main body (31). Furthermore, the at least two second partitions (32) are connected to each other at one end radially around the receiving cavity (101). The track section (302) is located on the main body section (31). The track section (302) has two contact surfaces along the circumference of the receiving cavity (101). The projection of one of the contact surfaces along the axial direction of the receiving cavity (101) onto the plane where the top surface of the second partition (32) is located is on the top surface of the second partition (32). The angle formed between the contact surface and the symmetrical plane of the second partition (32) perpendicular to its own thickness direction is γ, where γ = α / 2.

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