water valve

Abstract

The utility model relates to a valve body technical field especially relates to a water valve. Water valve includes valve body, first valve core, second valve core and drive assembly, and valve body has water inlet, water outlet, first backwater mouth and second backwater mouth. The first cavity, second cavity and bypass passage are opened in the valve body, and the both ends of bypass passage are communicated with first cavity and second cavity respectively. Water inlet, first cavity, first valve core's inner chamber and water outlet are communicated in proper order. The communication area S1 of first valve core and water outlet linearly changes. First backwater mouth, second cavity and second backwater mouth are communicated in proper order, and first cavity, bypass passage, second valve core's inner chamber, second cavity and second backwater mouth are communicated. The communication area S2 of second valve core and bypass passage linearly changes, and the change trend of S1 and S2 is opposite. Drive assembly drives first valve core and second valve core synchronous rotation. The flow of water valve is linearly changed along with the linear change of valve core rotation angle, and has improved the regulation accuracy of water valve flow.

Description

Technical Field

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

[0002] In the thermal management system of new energy vehicles, three-way valves, four-way valves, or other multi-way valves are used to control the flow rate and direction of coolant, thereby achieving coolant circulation within the vehicle to regulate the temperature of components such as the radiator, battery, motor, and electronic control system. Existing water valves typically have a single valve core installed within the valve body. A controller controls the rotation of this valve core by a certain angle within the valve body to adjust the flow area of ​​the flow channel or switch flow channels, thus changing the flow rate or direction of the coolant. Because the flow rate of a water valve and the rotation angle of the valve core are usually non-linear, it is difficult to precisely regulate the flow rate of the water valve by controlling a linear change in the rotation angle of the valve core. Utility Model Content

[0003] The purpose of this invention is to provide a water valve that allows the flow rate of the water valve to change linearly with the rotation angle of the valve core, thereby improving the flow rate regulation accuracy of the water valve.

[0004] To achieve this objective, the technical solution adopted by this utility model is as follows:

[0005] Water valve, including:

[0006] The valve body has an inlet, an outlet, a first return outlet, and a second return outlet; the valve body has a first cavity, a second cavity, and a bypass channel, the two ends of which are respectively connected to the first cavity and the second cavity;

[0007] The first valve core is rotatably installed in the first cavity, and the inlet, the first cavity, the inner cavity of the first valve core and the outlet are sequentially connected; the first valve core is configured such that when it rotates in the first cavity, the communication area S1 between the inner cavity of the first valve core and the outlet changes linearly.

[0008] The second valve core is rotatably installed in the second cavity. The first return port, the second cavity and the second return port are connected in sequence. The first cavity, the bypass channel, the inner cavity of the second valve core, the second cavity and the second return port are connected. The second valve core is configured such that when it rotates in the second cavity, the communication area S2 between the inner cavity of the second valve core and the bypass channel changes linearly, and the changing trends of S1 and S2 are opposite.

[0009] A drive assembly is installed on the valve body and drives the first valve core and the second valve core to rotate synchronously.

[0010] Alternatively, the changes in S1 and S2 can be the same.

[0011] As an optional solution, the circumferential sidewall of the first valve core is provided with a first irregular hole, and the bottom end of the first valve core is open so that the inner cavity of the first valve core is connected to the first cavity; the inner cavity of the first valve core is connected to the water outlet through the first irregular hole, and the area of ​​the first irregular hole facing the water outlet is S1.

[0012] The second valve core has a second irregular hole on its circumferential sidewall. The inner cavity of the second valve core is connected to the bypass channel through the second irregular hole. The area of ​​the second irregular hole facing the bypass channel is S2.

[0013] As an optional solution, the opening spacing of the first irregular hole along the first valve core axis has the opposite trend to the opening spacing of the second irregular hole along the second valve core axis.

[0014] As an optional solution, the first cavity includes:

[0015] The lower cavity is connected to one end of the water inlet and one end of the bypass channel;

[0016] An upper cavity is located above the lower cavity and is connected to both the water outlet and the lower cavity. The first valve core is rotatably installed in the upper cavity. The outer circumferential side of the first valve core is in contact with the inner circumferential side of the upper cavity, and the bottom end of the first valve core is connected to the lower cavity.

[0017] As an optional solution, a stepped surface is provided between the lower cavity and the upper cavity, and a limiting annular groove is formed around the first cavity in the circumferential direction of the stepped surface, and the bottom end of the first valve core is inserted into the limiting annular groove.

[0018] As an optional solution, the circumferential sidewall of the second valve core is also provided with a return water hole, which is located above the second irregular hole, and the inner cavity of the second valve core is connected to the second cavity through the return water hole.

[0019] As an optional solution, the top end of the first valve core is provided with a first sealing groove along the circumferential direction, and the first sealing groove is located above the first irregular hole; the top end of the second valve core is provided with a second sealing groove along the circumferential direction, and the second sealing groove is located above the return water hole; both the first sealing groove and the second sealing groove are equipped with sealing rings.

[0020] As an optional solution, the valve body is also provided with a driving gear shaft and a driven gear. The top end of the first valve core is coaxially provided with a first shaft, and the top end of the second valve core is coaxially provided with a second shaft. The driven gear is installed on both the first shaft and the second shaft.

[0021] The drive gear shaft includes an input shaft and a drive gear sleeved on the input shaft. The drive gear is located between the two driven gears and meshes with the two driven gears respectively. The input shaft extends out of the valve body and is connected to the drive assembly for transmission.

[0022] As an optional embodiment, the drive assembly includes a drive element, a turbine, and a worm gear. The output end of the drive element is connected to the worm gear, and the turbine gear meshes with the worm gear. The turbine gear is also connected to the input shaft to drive the drive gear to rotate via the input shaft. The output end of the drive element is perpendicular to the axial direction of the input shaft.

[0023] The beneficial effects of this utility model are as follows:

[0024] The water valve proposed in this utility model includes a valve body, a first valve core, a second valve core, and a drive assembly. The first and second valve cores are simultaneously installed within the valve body. Within the valve body, the inlet, the first cavity, the inner cavity of the first valve core, and the outlet are sequentially connected to form an inlet channel. Similarly, the first return port, the second cavity, and the second return port are sequentially connected to form a return channel. The inlet channel and the return channel are connected via a bypass channel, thus integrating an inlet channel, a return channel, and a bypass channel into the water valve. Water flowing into the valve body exits through the inlet channel and then returns through the return channel. When the valve body adjusts the flow rate, the drive assembly drives the first valve core and the second valve core to rotate synchronously. The communication area S1 between the inner cavity of the first valve core and the outlet changes linearly, and the communication area S2 between the inner cavity of the second valve core and the bypass channel changes linearly. The trends of S1 and S2 are opposite, so that part of the water entering the valve body enters the inlet channel, and the other part flows back to the return channel through the bypass channel. Thus, by controlling the linear change of the rotation angle of the first valve core and the second valve core, the flow rate of the inlet channel of the valve body changes linearly. That is, the flow rate of the water valve changes linearly with the linear change of the rotation angle of the valve core, which improves the flow rate adjustment accuracy of the water valve. Attached Figure Description

[0025] Figure 1 This is a front view of the valve body provided in an embodiment of this utility model;

[0026] Figure 2 This is an exploded view of the valve body provided in an embodiment of the present invention;

[0027] Figure 3 This is a partial structural schematic diagram of the valve body provided in an embodiment of the present utility model;

[0028] Figure 4 This is a cross-sectional view of the valve body provided in an embodiment of this utility model;

[0029] Figure 5This is a schematic diagram of the structure of the first valve core provided in this embodiment of the utility model;

[0030] Figure 6 This is a schematic diagram of the structure of the second valve core provided in this embodiment of the utility model.

[0031] The component names and labels in the diagram are as follows:

[0032] 1. Valve body; 11. Valve seat; 111. Inlet; 112. Outlet; 113. First return port; 114. Second return port; 115. First chamber; 1150. Limiting ring groove; 1151. Lower chamber; 1152. Upper chamber; 116. Second chamber; 117. Bypass passage; 12. Valve cover; 13. First sleeve; 14. Spring; 15. Third seal; 16. Second sleeve; 17. Fourth seal;

[0033] 2. First valve core; 21. First irregular hole; 22. First sealing groove; 23. First shaft;

[0034] 3. Second valve core; 31. Second irregular hole; 32. Return water hole; 33. Second sealing groove; 34. Second shaft;

[0035] 4. Drive assembly; 41. Drive component; 42. Drive gear shaft; 421. Input shaft; 422. Drive gear; 43. Driven gear; 44. Worm gear; 45. Worm gear; 46. Second-stage tandem gear; 47. Third-stage tandem gear; 48. Transmission gear;

[0036] 6. Control box; 61. Top cover; 62. Base plate; 8. First seal; 9. Second seal; 10. Connector. Detailed Implementation

[0037] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.

[0038] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature 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 includes the first feature 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.

[0040] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0041] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0042] Existing water valves typically have a single valve core installed within the valve body. A controller controls the rotation of this valve core by a certain angle within the valve body to adjust the flow area of ​​the flow channel or switch flow channels, thereby changing the flow rate or direction of the coolant. Since the flow rate of a water valve and the rotation angle of the valve core are usually non-linear, it is difficult to precisely regulate the flow rate of the water valve by controlling a linear change in the rotation angle of the valve core.

[0043] To solve the above problems, such as Figures 1-4As shown, this embodiment proposes a water valve, which includes a valve body 1, a first valve core 2, a second valve core 3, and a drive assembly 4. The valve body 1 has an inlet 111, an outlet 112, a first return port 113, and a second return port 114. The valve body 1 has a first cavity 115, a second cavity 116, and a bypass channel 117, with both ends of the bypass channel 117 communicating with the first cavity 115 and the second cavity 116, respectively. The first valve core 2 is rotatably mounted in the first cavity 115, and the inlet 111, the first cavity 115, the inner cavity of the first valve core 2, and the outlet 112 are sequentially connected. The first valve core 2 is configured such that when it rotates within the first cavity 115, the communication area S1 between the inner cavity of the first valve core 2 and the outlet 112 changes linearly. The second valve core 3 is rotatably mounted in the second cavity 116. The first return port 113, the second cavity 116, and the second return port 114 are sequentially connected. The first cavity 115, the bypass channel 117, the inner cavity of the second valve core 3, the second cavity 116, and the second return port 114 are also connected. The second valve core 3 is configured such that when it rotates within the second cavity 116, the communication area S2 between the inner cavity of the second valve core 3 and the bypass channel 117 changes linearly, and the changes in S1 and S2 are the same but opposite in trend. The drive assembly 4 is mounted on the valve body 1 and drives the first valve core 2 and the second valve core 3 to rotate synchronously.

[0044] In this embodiment, a first valve core 2 and a second valve core 3 are installed simultaneously inside the valve body 1. The inlet 111, the first cavity 115, the inner cavity of the first valve core 2, and the outlet 112 are sequentially connected within the valve body 1 to form an inlet channel. The first return port 113, the second cavity 116, and the second return port 114 are sequentially connected to form a return channel. The inlet channel and the return channel are connected by a bypass channel 117, so that the water valve integrates an inlet channel, a return channel, and a bypass channel 117. Water flowing into the valve body 1 flows out through the inlet channel and then returns through the return channel. When the valve body 1 adjusts the flow rate, the drive assembly 4 drives the first valve core 2 and the second valve core 3 to rotate synchronously. The communication area S1 between the inner cavity of the first valve core 2 and the outlet 112 changes linearly, and the communication area S2 between the inner cavity of the second valve core 3 and the bypass channel 117 changes linearly. The trends of S1 and S2 are opposite, so that part of the water entering the valve body 1 enters the inlet channel, and the other part of the water flows back to the return channel through the bypass channel 117. Thus, by controlling the linear change of the rotation angle of the first valve core 2 and the second valve core 3, the flow rate of the inlet channel of the valve body 1 is linearly changed. That is, the flow rate of the water valve changes linearly with the linear change of the rotation angle of the valve core, which improves the flow rate adjustment accuracy of the water valve.

[0045] It should be noted that the changes in S1 and S2 are the same, that is, the increase (or decrease) in flow rate of the inlet channel is the same as the decrease (or increase) in flow rate of the return channel through the bypass channel 117, so as to further improve the flow rate regulation accuracy of the water valve.

[0046] In this embodiment, the water valve is the air conditioning water valve in the vehicle's thermal management system. The vehicle's reservoir stores coolant, which flows through the water valve's inlet channel to the radiator, battery, motor, electronic control components, and other parts of the vehicle. The coolant then flows back to the reservoir through the return channel, achieving coolant circulation to meet the temperature regulation function of the vehicle's thermal management system. Since the vehicle's thermal management system is existing technology, the composition and operation of the heat pipe system will not be described in detail. Of course, the water valve can also be used in other devices, and specific limitations are not specified here.

[0047] like Figure 3 and Figure 4 As shown, valve body 1 has an inlet 111 and a second return port 114 at one end along its width (front-rear direction in the figure), and an outlet 112 and a first return port 113 at the other end along its width. This arrangement positions the inlet 111 and the second return port 114 at the front end of valve body 1, while the outlet 112 and the first return port 113 are located at the rear end, achieving a compact distribution of the four inlets on valve body 1. It should be noted that the inlet 111 and outlet 112 are located on the left side of the length direction of valve body 1 (left-right direction in the figure), and the first return port 113 and the second return port 114 are located on the right side of the length direction of valve body 1, ensuring that the inlet and return channels are arranged side-by-side along the length of valve body 1 and connected by a bypass channel 117.

[0048] Specifically, the inlet 111, outlet 112, first return outlet 113, and second return outlet 114 are all threadedly connected to connectors 10, allowing them to connect to external pipelines of the water valve via the connectors 10. The outlet 112 houses a first sleeve 13, a spring 14, and a third seal 15. The third seal 15 is fitted onto the outside of the first sleeve 13 and extends to one end of the first sleeve 13 to contact the outer periphery of the first valve core 2. The spring 14 is installed within the connector 10 that mates with the outlet 112 and elastically abuts against the first sleeve 13, ensuring that the third seal 15 elastically abuts against the outer periphery of the first valve core 2, thereby guaranteeing a sealing effect between the outlet 112 and the first valve core 2. A receiving groove is provided at one end of the bypass channel 117 that communicates with the second cavity 116. A second sleeve 16 is installed in the receiving groove. A fourth sealing member 17 is sleeved on the outside of the second sleeve 16 and extends to one end of the second sleeve 16 to contact the outer periphery of the second valve core 3, so that the fourth sealing member 17 and the outer periphery of the second valve core 3 are elastically pressed together to ensure the sealing effect between the bypass channel 117 and the second valve core 3.

[0049] like Figure 1 and Figure 2As shown, the valve body 1 includes a valve seat 11 and a valve cover 12. The valve seat 11 has an inlet 111, an outlet 112, a first return port 113, and a second return port 114. The valve seat 11 also has a first cavity 115, a second cavity 116, and a bypass channel 117. The valve cover 12 is placed on the valve seat 11 to ensure the sealing of the valve body 1. The valve cover 12 also has an outwardly extending lug, which is threaded into the vehicle. A control box 6 is installed on the valve body 1. The control box 6 includes a base plate 62 and a top cover 61. The base plate 62 is bolted to the valve cover 12. The drive assembly 4 is installed inside the control box 6 to protect the drive assembly 4.

[0050] like Figure 3 and Figure 4 As shown, the valve body 1 is also provided with a drive gear shaft 42 and a driven gear 43, and the top of the first valve core 2 is coaxially provided with a first shaft 23 (e.g., Figure 5 As shown), a second shaft 34 is coaxially provided at the top end of the second valve core 3 (as shown). Figure 6 As shown, both the first shaft 23 and the second shaft 34 are equipped with driven gears 43. The driving gear shaft 42 includes an input shaft 421 and a driving gear 422 sleeved on the input shaft 421. The driving gear 422 is located between the two driven gears 43 and meshes with each of the two driven gears 43. The input shaft 421 extends out of the valve body 1 and is connected to the drive assembly 4 for transmission. By having one driving gear 422 simultaneously mesh with two driven gears 43, the same drive member 41 drives the two driven gears 43 to rotate simultaneously through the driving gear 422. The two driven gears 43 rotate in the same direction, so that the two driven gears 43 drive the corresponding first valve core 2 and second valve core 3 to rotate synchronously, thereby changing the flow rate of the inlet channel and the flow rate entering the return channel through the bypass channel 117, thus precisely regulating the flow rate of the water valve.

[0051] Specifically, the drive assembly 4 includes a drive element 41, a turbine 44, and a worm gear 45. The output end of the drive element 41 is connected to the worm gear 45, and the turbine 44 meshes with the worm gear 45. The turbine 44 is also connected to the input shaft 421 to drive the drive gear 422 to rotate via the input shaft 421. The output end of the drive element 41 is perpendicular to the axial direction of the input shaft 421. Since the axial direction of the drive gear shaft 42 (input shaft 421) is parallel to the height direction (vertical direction in the figure) of the valve body 1, the meshing transmission of the turbine 44 and the worm gear 45 changes the torque transmission direction of the drive element 41, allowing the drive element 41 to be horizontally positioned within the control box 6. This reduces the space occupied by the drive element 41 along the height direction, thereby reducing the overall height of the valve body 1 and achieving a miniaturized design of the valve body 1, facilitating its installation and use.

[0052] In this embodiment, the driving component 41 is a motor, which offers high control precision and a small size. The motor's output shaft is connected to the worm gear 45 to drive the worm gear 45 to rotate. Figure 2 As shown, the control box 6 is also equipped with a two-stage series gear 46, a three-stage series gear 47, and a transmission gear 48 for meshing transmission. The turbine 44 is a first-stage series gear, which meshes with the worm 45 and the second-stage series gear 46. The second-stage series gear 46 also meshes with the third-stage series gear 47, and the third-stage series gear 47 also meshes with the transmission gear 48. The input shaft 421 of the drive gear shaft 42 is also equipped with a gear that meshes with the transmission gear 48, so that the worm 45, turbine 44, second-stage series gear 46, third-stage series gear 47, transmission gear 48, drive gear shaft 42, and driven gear 43 mesh and transmit power in sequence, thereby causing the drive member 41 to simultaneously drive the two driven gears 43 to rotate. Since the worm 45, turbine 44, second-stage tandem gear 46, third-stage tandem gear 47, and transmission gear 48 are all conventional transmission gear structures, their structures and meshing relationships will not be elaborated further.

[0053] In this embodiment, coolant (or other flowing medium) in the reservoir outside the water valve enters the inner cavity of the first chamber 115 and the first valve core 2 through the inlet 111, and then flows out from the outlet 112 and flows to the water-using end (the water-using end in this embodiment is a component that requires temperature regulation, such as a radiator in a vehicle). When it is necessary to reduce the flow rate in the inlet channel, the drive unit 41 drives the first valve core 2 and the second valve core 3 to rotate synchronously (at this time, the first valve core 2 and the second valve core 3 rotate counterclockwise). The rotation angle of the first valve core 2 increases linearly, and the communication area S1 between the inner cavity of the first valve core 2 and the outlet 112 decreases linearly. Since the changes in S1 and S2 are the same and the trends are opposite, the communication area S2 between the inner cavity of the second valve core 3 and the bypass channel 117 increases linearly, that is, the flow rate returning to the return channel through the bypass channel 117 increases. When it is necessary to increase the flow rate in the inlet channel, the drive unit 41 drives the first valve core 2 and the second valve core 3 to rotate synchronously (at this time, the first valve core 2 and the second valve core 3 rotate counterclockwise). The actuator 41 drives the first valve core 2 and the second valve core 3 to rotate synchronously again (at this time, the first valve core 2 and the second valve core 3 rotate clockwise). The rotation angle of the first valve core 2 decreases linearly, and the communication area S1 between the inner cavity of the first valve core 2 and the outlet 112 increases linearly. Since the changes in S1 and S2 are the same and the trends are opposite, the communication area S2 between the inner cavity of the second valve core 3 and the bypass channel 117 decreases linearly, which increases the flow rate of the coolant in the inlet channel and decreases the flow rate back to the return channel through the bypass channel 117, thereby realizing the linear regulation of the flow rate of the water valve.

[0054] like Figures 4-6As shown, the first valve core 2 has a first irregularly shaped hole 21 on its circumferential sidewall, and the bottom end of the first valve core 2 is open, so that the inner cavity of the first valve core 2 is connected to the first cavity 115. The inner cavity of the first valve core 2 is connected to the outlet 112 through the first irregularly shaped hole 21, and the area of ​​the first irregularly shaped hole 21 facing the outlet 112 is S1. The second valve core 3 has a second irregularly shaped hole 31 on its circumferential sidewall, and the inner cavity of the second valve core 3 is connected to the bypass channel 117 through the second irregularly shaped hole 31, and the area of ​​the second irregularly shaped hole 31 facing the bypass channel 117 is S2. By setting the first irregularly shaped hole 21 and the second irregularly shaped hole 31, when the first valve core 2 rotates in the first cavity 115, the second valve core 3 rotates synchronously in the second cavity 116, and the connecting area S1 changes linearly with the linear change of the rotation angle of the first valve core 2, and the connecting area S2 changes linearly with the linear change of the rotation angle of the second valve core 3, thereby realizing the linear regulation of the water valve flow rate.

[0055] Specifically, such as Figure 5 and Figure 6 As shown, the opening spacing h1 of the first irregular hole 21 along the axial direction of the first valve core 2 (vertical direction in the figure) has an opposite trend to the opening spacing h2 of the second irregular hole 31 along the axial direction of the second valve core 3. Through the above arrangement, the increase (or decrease) in the area of ​​the first irregular hole 21 facing the outlet 112 is the same as the decrease (or increase) in the area of ​​the second irregular hole 31 facing the bypass channel 117, ensuring that the sum of the flow rate out of the outlet 112 and the flow rate flowing into the second outlet 112 through the bypass channel 117 is equal to the flow rate at the inlet 111.

[0056] like Figure 4As shown, the first cavity 115 includes a lower cavity 1151 and an upper cavity 1152. The lower cavity 1151 is connected to one end of the inlet 111 and the bypass channel 117, respectively. The upper cavity 1152 is located above the lower cavity 1151 and is connected to the outlet 112 and the lower cavity 1151, respectively. The first valve core 2 is rotatably installed in the upper cavity 1152. The outer circumferential side of the first valve core 2 is in contact with the inner circumferential side of the upper cavity 1152, and the bottom end of the first valve core 2 is connected to the lower cavity 1151. After entering through inlet 111, the coolant first enters the lower cavity 1151. Then, a portion of the coolant enters the upper cavity 1152 and flows through the first shaped hole 21 into the outlet 112, thus flowing to the water-using end through the inlet channel. The other portion of the coolant in the lower cavity 1151 enters the inner cavity of the second valve core 3 through the bypass channel 117 and the second shaped hole 31, then enters the second cavity 116 and flows out through the second return port 114. When the second valve core 2 closes the bypass channel 117 (when the connecting area S2 is 0), all the coolant entering from inlet 111 will flow out through outlet 112. Similarly, when the first valve core 2 closes the outlet 112 (when the connecting area S1 is 0), all the coolant entering from inlet 111 will flow out through bypass channel 117 and the second return port 114.

[0057] In this embodiment, the inlet 111 is lower than the outlet 112, and the axes of the inlet 111 and the outlet 112 are parallel in the height direction and collinear in the length direction of the valve body 1. The axes of the first return water inlet 113 and the second return water inlet 114 are collinear, so that the inlet channel and the return water channel are arranged at intervals along the length direction of the valve body 1.

[0058] Specifically, such as Figure 4 As shown, a stepped surface exists between the lower cavity 1151 and the upper cavity 1152. A limiting annular groove 1150 is formed around the first cavity 115 in the circumferential direction of the stepped surface, and the bottom end of the first valve core 2 is inserted into the limiting annular groove 1150. The limiting annular groove 1150 limits the installation of the first valve core 2 and allows the first valve core 2 to rotate within the limiting annular groove 1150, thereby improving the stability of the rotation process of the first valve core 2.

[0059] like Figure 4 and Figure 6 As shown, the circumferential sidewall of the second valve core 3 is also provided with a return water hole 32, which is located above the second irregular hole 31. The inner cavity of the second valve core 3 is connected to the second cavity 116 through the return water hole 32. Specifically, the circumferential sidewall of the second valve core 3 is provided with multiple return water holes 32 at equal intervals along the circumference, so that when the second valve core 3 rotates in the second cavity 116, the coolant in the first return water port 113 and the bypass channel 117 can both flow back to the second return water port 114 through the return water hole 32, avoiding obstruction of the coolant's return flow process in the return water channel, thereby realizing the circulation of coolant.

[0060] like Figure 2 , Figure 5 and Figure 6 As shown, a first sealing groove 22 is circumferentially provided at the top of the first valve core 2, and the first sealing groove 22 is located above the first irregular hole 21. A second sealing groove 33 is circumferentially provided at the top of the second valve core 3, and the second sealing groove 33 is located above the return water hole 32. Sealing rings are installed in both the first sealing groove 22 and the second sealing groove 33. Specifically, a first sealing element 8 is installed in the first sealing groove 22, and a second sealing element 9 is installed in the second sealing groove 33, and both the first sealing element 8 and the second sealing element 9 are sealing rings. Through the above arrangement, the top of the first valve core 2 is sealed to the inner wall of the first cavity 115 by the first sealing element 8, and the top of the second valve core 3 is sealed to the inner wall of the second cavity 116 by the second sealing element 9, thereby preventing coolant from leaking from the first cavity 115 and the second cavity 116 to the outside of the valve body 1, and improving the sealing performance of the water valve.

[0061] The above embodiments merely illustrate the basic principles and characteristics of this utility model. This utility model is not limited to the above embodiments. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A water valve, characterized in that, include: The valve body (1) has an inlet (111), an outlet (112), a first return water inlet (113), and a second return water inlet (114); the valve body (1) has a first cavity (115), a second cavity (116), and a bypass channel (117), the two ends of the bypass channel (117) being connected to the first cavity (115) and the second cavity (116) respectively; The first valve core (2) is rotatably installed in the first cavity (115). The inlet (111), the first cavity (115), the inner cavity of the first valve core (2) and the outlet (112) are connected in sequence. The first valve core (2) is configured such that when it rotates in the first cavity (115), the communication area S1 between the inner cavity of the first valve core (2) and the outlet (112) changes linearly. The second valve core (3) is rotatably installed in the second cavity (116). The first return port (113), the second cavity (116) and the second return port (114) are connected in sequence. The first cavity (115), the bypass channel (117), the inner cavity of the second valve core (3), the second cavity (116) and the second return port (114) are connected. The second valve core (3) is configured such that when it rotates in the second cavity (116), the communication area S2 between the inner cavity of the second valve core (3) and the bypass channel (117) changes linearly, and the changing trends of S1 and S2 are opposite. A drive assembly (4) is installed on the valve body (1) and drives the first valve core (2) and the second valve core (3) to rotate synchronously.

2. The water valve according to claim 1, characterized in that, The change in S1 is the same as that in S2.

3. The water valve according to claim 1, characterized in that, The first valve core (2) has a first irregular hole (21) on its circumferential sidewall, and the bottom end of the first valve core (2) is open so that the inner cavity of the first valve core (2) is connected to the first cavity (115); the inner cavity of the first valve core (2) is connected to the water outlet (112) through the first irregular hole (21), and the area of ​​the first irregular hole (21) facing the water outlet (112) is S1; The second valve core (3) has a second irregular hole (31) on its circumferential sidewall. The inner cavity of the second valve core (3) is connected to the bypass channel (117) through the second irregular hole (31). The area of ​​the second irregular hole (31) facing the bypass channel (117) is S2.

4. The water valve according to claim 3, characterized in that, The opening spacing of the first irregular hole (21) along the axial direction of the first valve core (2) has the opposite trend to the opening spacing of the second irregular hole (31) along the axial direction of the second valve core (3).

5. The water valve according to claim 3, characterized in that, The first cavity (115) includes: The lower cavity (1151) is connected to one end of the water inlet (111) and the bypass channel (117); The upper cavity (1152) is located above the lower cavity (1151) and is connected to the outlet (112) and the lower cavity (1151) respectively. The first valve core (2) is rotatably installed in the upper cavity (1152). The outer circumferential side of the first valve core (2) is in contact with the inner circumferential side of the upper cavity (1152), and the bottom end of the first valve core (2) is connected to the lower cavity (1151).

6. The water valve according to claim 5, characterized in that, The lower cavity (1151) and the upper cavity (1152) have a stepped surface. A limiting annular groove (1150) is formed around the first cavity (115) in the circumferential direction of the stepped surface. The bottom end of the first valve core (2) is inserted into the limiting annular groove (1150).

7. The water valve according to claim 3, characterized in that, The second valve core (3) is also provided with a return water hole (32) on its circumferential sidewall. The return water hole (32) is located above the second irregular hole (31). The inner cavity of the second valve core (3) is connected to the second cavity (116) through the return water hole (32).

8. The water valve according to claim 7, characterized in that, The top end of the first valve core (2) is provided with a first sealing groove (22) along the circumferential direction, and the first sealing groove (22) is located above the first irregular hole (21); the top end of the second valve core (3) is provided with a second sealing groove (33) along the circumferential direction, and the second sealing groove (33) is located above the return water hole (32). Both the first sealing groove (22) and the second sealing groove (33) are equipped with sealing rings.

9. The water valve according to any one of claims 1 to 8, characterized in that, The valve body (1) is also provided with a drive gear shaft (42) and a driven gear (43). The top end of the first valve core (2) is coaxially provided with a first shaft (23), and the top end of the second valve core (3) is coaxially provided with a second shaft (34). The driven gear (43) is installed on both the first shaft (23) and the second shaft (34). The drive gear shaft (42) includes an input shaft (421) and a drive gear (422) sleeved on the input shaft (421). The drive gear (422) is located between the two driven gears (43) and meshes with the two driven gears (43) respectively. The input shaft (421) extends out of the valve body (1) and is connected to the drive assembly (4) for transmission.

10. The water valve according to claim 9, characterized in that, The drive assembly (4) includes a drive member (41), a turbine (44), and a worm gear (45). The output end of the drive member (41) is connected to the worm gear (45), and the turbine (44) meshes with the worm gear (45). The turbine (44) is also connected to the input shaft (421) for transmission, so as to drive the drive gear (422) to rotate through the input shaft (421). The output end of the drive member (41) is perpendicular to the axial direction of the input shaft (421).

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