A multi-way valve

Abstract

The application provides a multi-way valve, and relates to the technical field of valves. The multi-way valve comprises a valve seat, a rotating shaft, a rotating disc and an actuator. The rotating disc is arranged rotatably in the valve seat. The rotating shaft penetrates through the valve seat and the rotating disc. The rotating shaft is coaxially connected with the rotating disc. The actuator is arranged on one side of the valve seat and connected with the rotating shaft to drive the rotating shaft to rotate. A limiting part is arranged in the valve seat to limit the rotation of the rotating disc between a first working position and a second working position. The multi-way valve can realize relatively accurate reversing.

Description

Technical Field

[0001] This application relates to the field of valve technology, and more specifically, to a multi-way valve. Background Technology

[0002] In existing automotive thermal management systems, multi-way valves are core components. They regulate the on / off state, reversal, and flow rate of the medium to control the overall vehicle's thermal management.

[0003] The core function of a multi-way valve is to switch fluid channels by changing the position of the valve core, thereby enabling the conversion between different process flows. However, in practical applications, multi-way valves may have inaccurate switching positions during the switching process. This deviation may cause media mixing or abnormal system pressure. Utility Model Content

[0004] The purpose of this application includes, for example, providing a multi-way valve that can achieve relatively accurate reversing.

[0005] The embodiments of this application can be implemented as follows:

[0006] An embodiment of this application provides a multi-way valve, which includes a valve seat, a rotating shaft, a turntable, and an actuator. The turntable is rotatably disposed within the valve seat. The rotating shaft passes through both the valve seat and the turntable and is coaxially connected to the turntable. The actuator is disposed on one side of the valve seat and connected to the rotating shaft to drive the rotating shaft to rotate. A limiting portion is provided within the valve seat to limit the rotation of the turntable between a first working position and a second working position.

[0007] Optionally, the limiting part is provided with a first abutting surface and a second abutting surface located on the same circumference, and the turntable is provided with a first stop surface and a second stop surface located on the same circumference. The first stop surface is used to abut against the first abutting surface when the turntable rotates to the first working position, and the second stop surface is used to abut against the second abutting surface when the turntable rotates to the second working position.

[0008] Optionally, the valve seat is provided with a plurality of first flow channel holes evenly spaced around the rotating shaft, and the turntable is provided with blind holes and through holes. When the turntable is in the first working position or the second working position, the blind holes and the through holes are each connected to two of the first flow channel holes.

[0009] Optionally, the multi-way valve further includes a sealing plate and a spring, both of which are disposed within the valve seat. The rotary disc is located between the spring and the sealing plate, and the rotary disc is able to abut against the sealing plate under the action of the spring.

[0010] Optionally, the surface of the turntable facing the sealing sheet is provided with raised ribs, which can abut against the sealing sheet.

[0011] Optionally, a boss is provided on the limiting part extending radially outward along the rotation axis, and a first limiting groove is provided on the sealing sheet, with the boss cooperating with the first limiting groove.

[0012] Optionally, at least one of the sealing sheet and the turntable is made of ceramic material.

[0013] Optionally, the spring is a wave spring.

[0014] Optionally, the rotating shaft is provided with a protruding rib, the turntable is provided with a central hole for the rotating shaft to pass through, and a second limiting groove is provided on the inner wall of the central hole, and the protruding rib cooperates with the second limiting groove.

[0015] Optionally, the rotating shaft is connected to the actuator via a spline.

[0016] The beneficial effects of the multi-way valve provided in this application embodiment include, for example, in order to achieve more accurate reversing, a multi-way valve is designed, which includes a valve seat, a rotating shaft, a turntable and an actuator. The turntable is rotatably disposed in the valve seat, and the rotating shaft passes through both the valve seat and the turntable. The rotating shaft and the turntable are coaxially connected. The actuator is disposed on the valve seat and connected to the rotating shaft to drive the rotating shaft to rotate. A limiting part is provided in the valve seat to limit the rotation of the turntable between a first working position and a second working position.

[0017] During the switching process, the multi-way valve is driven by an actuator to rotate the rotating shaft, and the turntable rotates synchronously with the rotating shaft. Because the valve seat is equipped with a limiting part, the limiting part restricts the turntable to rotate only between the first working position and the second working position. That is, the turntable can rotate from the first working position to the second working position, and also from the second working position to the first working position, thereby realizing the precise switching of the multi-way valve and making it less likely to cause media mixing or abnormal system pressure. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the multi-way valve in the embodiments of this application;

[0020] Figure 2This is a partial explosion diagram of the multi-way valve in an embodiment of this application;

[0021] Figure 3 This is a partial cross-sectional view of the multi-way valve in an embodiment of this application;

[0022] Figure 4 This is a schematic diagram of the valve body in an embodiment of this application;

[0023] Figure 5 for Figure 4 Enlarged view of section A;

[0024] Figure 6 This is a schematic diagram of the turntable in an embodiment of this application;

[0025] Figure 7 This is an exploded view showing the mating relationship between the sealing sheet and the limiting part in the embodiments of this application;

[0026] Figure 8 This is an exploded view showing the relationship between the rotating shaft and the turntable in an embodiment of this application.

[0027] Icons: 100-Valve seat; 110-Valve body; 111-Limiting part; 1111-First abutting surface; 1112-Second abutting surface; 1113-Bearing; 1114-Arc-shaped notch; 1115-Boss; 120-Valve cover; 130-First flow channel hole; 200-Rotating shaft; 210-Protruding ridge; 300-Turntable; 310-Limiting mating part; 311-First stop surface; 312-Second stop surface; 320-Blind hole; 330-Through hole; 340-Annular rib; 350-Strip rib; 360-Center hole; 361-Second limiting groove; 400-Actuator; 500-Sealing plate; 510-Second flow channel hole; 520-First limiting groove; 600-Wave spring. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] In the description of this application, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0032] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0033] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0034] Existing multi-way valves may have inaccurate switching positions during the switching process. If the switching position deviates, it may cause media mixing or abnormal system pressure. Embodiments of this application provide a multi-way valve that at least addresses this technical problem.

[0035] Please refer to Figures 1-3 The multi-way valve provided in the embodiments of this application includes a valve seat 100, a rotating shaft 200, a turntable 300, and an actuator 400. The turntable 300 is rotatably disposed within the valve seat 100. The rotating shaft 200 passes through both the valve seat 100 and the turntable 300 and is coaxially connected to the turntable 300. The actuator 400 is disposed on one side of the valve seat 100 and connected to the rotating shaft 200 to drive the rotating shaft 200 to rotate. A limiting part 111 is provided in the valve seat 100 to limit the rotation of the turntable 300 between a first working position and a second working position.

[0036] The valve seat 100 includes a valve body 110 and a valve cover 120 connected by bolts. A cavity for accommodating a turntable 300 is formed between the valve body 110 and the valve cover 120. A rotating shaft 200 passes through the outside of the valve cover 120 into the cavity, and the rotating shaft 200 is coaxially connected to the turntable 300, so that the rotating shaft 200 and the turntable 300 are relatively fixed. The actuator 400 can be a driving component such as a motor. The actuator 400 is disposed on the outside of the valve cover 120 and connected to the end of the rotating shaft 200 located outside the valve seat 100. The rotating shaft 200 is driven to rotate. A limiting part 111 is provided on the valve body 110. The presence of the limiting part 111 limits the turntable 300 to rotate only between the first working position and the second working position. For example, when the turntable 300 rotates clockwise from the first working position to the second working position, the turntable 300 cannot continue to rotate clockwise. Similarly, when the turntable 300 rotates counterclockwise from the second working position to the first working position, the turntable 300 cannot continue to rotate counterclockwise.

[0037] During the switching process, the multi-way valve drives the rotating shaft 200 to rotate via the actuator 400. The turntable 300 rotates synchronously with the rotating shaft 200. Since the valve seat 100 is provided with a limiting part 111, the limiting part 111 restricts the turntable 300 to rotate only between the first working position and the second working position. That is, the turntable 300 can rotate from the first working position to the second working position, and also from the second working position to the first working position, thereby realizing the precise switching of the multi-way valve and making it less likely to cause medium mixing or abnormal system pressure.

[0038] Please refer to Figures 4-6 In some embodiments, the limiting part 111 is provided with a first abutting surface 1111 and a second abutting surface 1112 located on the same circumference, and the turntable 300 is provided with a first stop surface 311 and a second stop surface 312 located on the same circumference. The first stop surface 311 is used to abut against the first abutting surface 1111 when the turntable 300 rotates to the first working position, and the second stop surface 312 is used to abut against the second abutting surface 1112 when the turntable 300 rotates to the second working position.

[0039] The limiting part 111 has a ring-shaped structure and a bearing 1113 is provided inside. One end of the rotating shaft 200 is engaged with the bearing 1113. The top end of the limiting part 111 has an arc-shaped notch 1114. The first abutting surface 1111 and the second abutting surface 1112 are the two opposing surfaces of the limiting part 111 within the arc-shaped notch 1114. The turntable 300 has a limiting fitting part 310 on one side facing the limiting part 111. The limiting fitting part 310 is located within the arc-shaped notch 1114 and is arc-shaped. The first stop surface 311 and the second stop surface 312 are the two sides of the limiting fitting part 310.

[0040] When the turntable 300 rotates from the first working position to the second working position, the second stop surface 312 abuts against the second abutting surface 1112, and when the turntable 300 rotates from the second working position to the first working position, the first stop surface 311 abuts against the first abutting surface 1111, thereby enabling the turntable 300 to be accurately positioned in the first working position or the second working position for operation.

[0041] In some embodiments, the valve seat 100 is provided with a plurality of first flow channel holes 130 evenly spaced around the rotation shaft 200, and the turntable 300 is provided with blind holes 320 and through holes 330. When the turntable 300 is in the first working position or the second working position, the blind holes 320 and the through holes 330 are respectively connected to two first flow channel holes 130.

[0042] A plurality of first flow channel holes 130 are evenly spaced on the surface of the valve body 110 away from the actuator 400. The plurality of first flow channel holes 130 are used to connect to different pipes respectively. The blind hole 320 and the through hole 330 are both opened along the axial direction of the rotation axis 200. The blind hole 320 is opened on the surface of the turntable 300 away from the actuator 400. When the turntable 300 is in the first working position or the second working position, the blind hole 320 connects two of the first flow channel holes 130, and the through hole 330 connects two of the first flow channel holes 130. Since the angle of rotation of the turntable 300 between the first working position and the second working position is equal to the angle between two adjacent first flow channel holes 130, the flow channel can be accurately switched when the turntable 300 rotates from the first working position to the second working position or from the second working position to the first working position.

[0043] In some embodiments, the angle at which the turntable 300 rotates between the first working position and the second working position is equal to the included angle between two adjacent first flow channel holes 130. It is understood that in some other embodiments, the angle at which the turntable 300 rotates between the first working position and the second working position may be slightly larger or slightly smaller than the included angle between two adjacent first flow channel holes 130, as long as the blind hole 320 and the through hole 330 are connected to the two first flow channel holes 130 respectively when the turntable 300 is in the first working position or the second working position.

[0044] For example, there are five first flow channel holes 130, and the included angle between two adjacent first flow channel holes 130 is 72°. The rotation angle of the turntable 300 between the first working position and the second working position can be about 72°. The five first flow channel holes 130 are flow channel holes numbered one to five. When the turntable 300 is in the first working position, the blind hole 320 connects flow channel hole number one and flow channel hole number five, and the through hole 330 connects flow channel hole number two and flow channel hole number three. When the turntable 300 is in the second working position, the blind hole 320 connects flow channel hole number one and flow channel hole number two, and the through hole 330 connects flow channel hole number three and flow channel hole number four.

[0045] It is understandable that the number of first flow channel holes 130 and the flow channel holes corresponding to blind holes 320 and through holes 330 can be determined according to the actual working conditions.

[0046] Please combine Figure 7 In some embodiments, the multi-way valve further includes a sealing plate 500 and a spring, both of which are disposed within the valve seat 100. A rotary disc 300 is located between the spring and the sealing plate 500, and the rotary disc 300 is able to abut against the sealing plate 500 under the action of the spring.

[0047] The sealing sheet 500 has multiple second flow channel holes 510, which are connected to multiple first flow channel holes 130 in a one-to-one correspondence; the turntable 300 has a first surface and a second surface opposite to each other along the axial direction of the rotation shaft 200, and the spring acts on the first surface of the turntable 300 so that the second surface of the turntable 300 abuts against the sealing sheet 500 to achieve sealing.

[0048] Furthermore, the surface of the turntable 300 facing the sealing sheet 500 is provided with raised ribs, which can abut against the sealing sheet 500.

[0049] The ribs include two annular ribs 340 of different diameters and three strip ribs 350. The two annular ribs 340 are coaxially arranged with the turntable 300. The turntable 300 is provided with a central hole 360 ​​for the rotating shaft 200 to pass through. The smaller diameter annular ribs 340 are arranged around the central hole 360. The blind hole 320, the through hole 330 and the central hole 360 ​​are all located inside the larger diameter annular ribs 340. The three strip ribs 350 are arranged circumferentially along the turntable 300 and are all connected between the two annular ribs 340. The three strip ribs 350 and the two annular ribs 340 form three fan-shaped sealing areas, of which the positions of the two fan-shaped sealing areas are matched with the blind hole 320 and the through hole 330, respectively.

[0050] Under the action of the spring, the two annular ribs 340 and the three strip ribs 350 on the turntable 300 abut against the surface of the sealing sheet 500, preventing the medium entering the blind hole 320 and the through hole 330 from flowing back and forth, thus achieving a sealing effect.

[0051] In some embodiments, a boss 1115 is provided on the limiting part 111 extending radially outward along the rotation axis 200, and a first limiting groove 520 is provided on the sealing sheet 500, with the boss 1115 cooperating with the first limiting groove 520.

[0052] The sealing sheet 500 is sleeved on the limiting part 111. The first limiting groove 520 is disposed on the inner side of the sealing sheet 500 and cooperates with the boss 1115 on the limiting part 111 so that the sealing sheet 500 is relatively fixed to the valve body 110, thereby ensuring that the second flow channel hole 510 will not be misaligned with the first flow channel hole 130.

[0053] It is understandable that the number of bosses 1115 and first limiting grooves 520 are matched. For example, there are two bosses 1115 and two first limiting grooves 520, and the two bosses 1115 are respectively matched with the two first limiting grooves 520.

[0054] In some embodiments, at least one of the sealing sheet 500 and the turntable 300 is made of ceramic material.

[0055] The fact that at least one of the sealing sheet 500 and the turntable 300 is made of ceramic material includes: the sealing sheet 500 is made of ceramic material, or the turntable 300 is made of ceramic material, or both the sealing sheet 500 and the turntable 300 are made of ceramic material.

[0056] Because ceramic materials have extremely high surface hardness, the surface roughness of parts can be made extremely low through grinding processes. Therefore, using ceramic materials to manufacture sealing sheet 500 or turntable 300, with turntable 300 supporting sealing sheet 500, can ensure good low internal leakage, low friction and high wear resistance, thereby reducing the output torque requirements of actuator 400 and improving product life.

[0057] In some embodiments, the spring is a wave spring 600.

[0058] It should be noted that the wave spring 600 has an undulating shape along the axial direction of the rotation shaft 200, with multiple high contact points and multiple low contact points. The multiple high contact points simultaneously abut against the inner wall of the valve cover 120, and the multiple low contact points simultaneously abut against the first surface of the turntable 300, thus ensuring that the ribs on the turntable 300 always abut against the sealing plate 500. Compared to ordinary helical springs, the wave spring 600 has more stable end-face positioning and is less prone to circumferential deformation.

[0059] In other embodiments, the spring may be of other types, as long as it can achieve a similar effect to the wave spring 600, and there is no limitation thereto.

[0060] Please refer to Figure 8 In some embodiments, a protruding rib 210 is provided on the rotating shaft 200, and a second limiting groove 361 is provided on the inner wall of the central hole 360, with the protruding rib 210 cooperating with the second limiting groove 361.

[0061] A protruding ridge 210 is provided on the side of the rotating shaft 200 and extends along the axial direction of the rotating shaft 200. The second limiting groove 361 is opened along the axial direction of the central hole 360. When the protruding ridge 210 and the second limiting groove 361 are engaged, the rotating shaft 200 and the turntable 300 are relatively fixed. When the rotating shaft 200 rotates, it can drive the turntable 300 to rotate synchronously.

[0062] It is understandable that the number of protrusions 210 and the number of second limiting grooves 361 are matched. For example, there are two protrusions 210 and two limiting grooves 361, and the two protrusions 210 are respectively matched with the two second limiting grooves 361.

[0063] In some embodiments, the rotating shaft 200 is connected to the actuator 400 via a spline.

[0064] It should be noted that the part of the rotating shaft 200 located outside the valve seat 100 is connected to the actuator 400 via a spline. When the actuator 400 is started, it can stably drive the rotating shaft 200 to rotate.

[0065] In summary, the embodiments of this application provide a multi-way valve, which includes a valve seat 100, a rotating shaft 200, a turntable 300, and an actuator 400. During the switching process, the multi-way valve drives the rotating shaft 200 to rotate through the actuator 400, and the turntable 300 rotates synchronously with the rotating shaft 200. Since a limiting part 111 is provided in the valve seat 100, the limiting part 111 limits the turntable 300 to rotate only between the first working position and the second working position, thereby realizing the precise switching of the multi-way valve and making it less likely to cause medium mixing or abnormal system pressure.

[0066] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A multi-way valve, characterized in that, The device includes a valve seat (100), a rotating shaft (200), a turntable (300), and an actuator (400). The turntable (300) is rotatably disposed within the valve seat (100). The rotating shaft (200) passes through both the valve seat (100) and the turntable (300) and is coaxially connected to the turntable (300). The actuator (400) is disposed on one side of the valve seat (100) and connected to the rotating shaft (200) to drive the rotating shaft (200) to rotate. A limiting part (111) is provided within the valve seat (100) to limit the rotation of the turntable (300) between a first working position and a second working position.

2. The multi-way valve according to claim 1, characterized in that, The limiting part (111) is provided with a first abutting surface (1111) and a second abutting surface (1112) located on the same circumference. The turntable (300) is provided with a first stop surface (311) and a second stop surface (312) located on the same circumference. The first stop surface (311) is used to abut against the first abutting surface (1111) when the turntable (300) rotates to the first working position. The second stop surface (312) is used to abut against the second abutting surface (1112) when the turntable (300) rotates to the second working position.

3. The multi-way valve according to claim 1, characterized in that, The valve seat (100) is provided with a plurality of first flow channel holes (130) evenly spaced around the rotating shaft (200). The turntable (300) is provided with blind holes (320) and through holes (330). When the turntable (300) is in the first working position or the second working position, the blind hole (320) and the through hole (330) are each connected to two first flow channel holes (130).

4. The multi-way valve according to claim 1, characterized in that, The multi-way valve also includes a sealing plate (500) and a spring, both of which are disposed within the valve seat (100). The rotary table (300) is located between the spring and the sealing plate (500), and the rotary table (300) is able to abut against the sealing plate (500) under the action of the spring.

5. The multi-way valve according to claim 4, characterized in that, The turntable (300) has raised ribs on its surface facing the sealing sheet (500), and the raised ribs can abut against the sealing sheet (500).

6. The multi-way valve according to claim 4, characterized in that, The limiting part (111) is provided with a boss (1115) extending radially outward along the rotation axis (200), and the sealing sheet (500) is provided with a first limiting groove (520), and the boss (1115) cooperates with the first limiting groove (520).

7. The multi-way valve according to claim 4, characterized in that, At least one of the sealing sheet (500) and the turntable (300) is made of ceramic material.

8. The multi-way valve according to claim 4, characterized in that, The spring is a wave spring (600).

9. The multi-way valve according to claim 1, characterized in that, The rotating shaft (200) is provided with a protruding rib (210), and the turntable (300) is provided with a central hole (360) through which the rotating shaft (200) passes. A second limiting groove (361) is provided on the inner wall of the central hole (360), and the protruding rib (210) cooperates with the second limiting groove (361).

10. The multi-way valve according to claim 1, characterized in that, The rotating shaft (200) is connected to the actuator (400) via a spline.

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