A multi-pass valve and thermal management system

Abstract

The utility model provides a kind of multi-way valve and heat management system, including valve cover, valve shell, valve core, sealing washer, valve shell is fixed below valve cover, valve shell includes by the inner surface of valve shell to the outer portion of valve shell The valve port of communication, the avoidance groove being set around valve port is placed in the inner surface of valve shell, valve core is placed in valve shell and is relatively rotatably arranged with valve shell, sealing washer is fixed in valve core, and sealing washer is placed between valve core and valve shell and the inner surface of valve shell contact;Avoidance groove includes two arc-shaped edges being set oppositely to valve port.The utility model's multi-way valve and heat management system under the premise of guaranteeing water valve tightness and the invariable water inlet and outlet efficiency, reduce the torque that valve core rotates to the water outlet edge of valve shell inner wall suddenly increases, while guarantee the feasibility of manufacture, reduce the performance requirement to motor and transmission system in actuator.

Description

Technical Field

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

[0002] In existing technologies, thermal management systems for new energy vehicles are developing towards integration. Multiple subsystems within these systems provide water valves to meet the demands of various heat exchange modes. During heat exchange, a drive device is needed to adjust the flow direction of the valve core to different inlets, thus selecting different flow modes. To ensure the normal flow of the medium, a sealing gasket is an indispensable component for guaranteeing the sealing performance of the multi-way valve. In related technologies, the multi-way valve's structural design is not optimal. During rotation, the compression of the sealing gasket as it rotates along the outlet edge of the inlet / outlet valve's inner wall initially decreases and then increases. This results in a sudden increase in the torque of the valve core rotation during the increase in compression, placing higher demands on the actuator's output torque and ultimately requiring higher performance from the motor and a higher reduction ratio in the transmission system.

[0003] Therefore, it is necessary to provide a multi-way valve and thermal management system to overcome the defects mentioned above. Utility Model Content

[0004] The purpose of this invention is to provide a multi-way valve that, while ensuring the water valve's sealing performance and inlet / outlet efficiency remain unchanged, reduces the sudden increase in torque when the valve core rotates to the edge of the outlet on the inner wall of the valve housing, thereby reducing the performance requirements on the motor and transmission system within the actuator.

[0005] According to one aspect of this utility model, a multi-way valve is provided, including a valve cover, a valve housing, a valve core, and a sealing gasket. The valve housing is fixed below the valve cover and includes a valve port communicating from the inner surface of the valve housing to the outside of the valve housing, and a clearance groove disposed on the inner surface of the valve housing and surrounding the valve port. The valve core is disposed inside the valve housing and is rotatably disposed relative to the valve housing. The sealing gasket is fixed to the valve core and is disposed between the valve core and the valve housing, contacting the inner surface of the valve housing. The clearance groove includes two arc-shaped edges disposed opposite to the valve port. With the above solution, when the valve core rotates, the sealing gasket passes through the clearance groove, and the contact area between the sealing gasket and the inner wall remains constant or continuously changes. This can reduce the sudden increase in torque when the valve core rotates to the outlet edge of the valve housing while ensuring the water valve's sealing performance and inlet / outlet water efficiency remain unchanged, while ensuring manufacturing feasibility and reducing the performance requirements of the motor and transmission system in the actuator.

[0006] Preferably, the clearance groove further includes a first transition arc surface disposed at the junction of the arc-shaped edge and the inner surface of the valve body, and a second transition arc surface disposed between the first transition arc surface and the bottom of the clearance groove, the second transition arc surface forming the inner wall of the clearance groove.

[0007] Preferably, the clearance groove further includes two short edges that connect the two ends of the two arc-shaped edges respectively, and the length of the arc-shaped edges is greater than the length of the short edges.

[0008] Preferably, the clearance groove can be formed by connecting two arc-shaped ends or by connecting two arc-shaped ends with two straight sides.

[0009] Preferably, the direction of the axis of rotation of the valve core is defined as the first direction, and the direction perpendicular to the first direction is defined as the second direction. The arc is set along the first direction, and the end of the arc is close to the center of the valve port along the second direction relative to the middle of the arc.

[0010] Preferably, the arc shape can also be set along the first direction and have a certain angle with the first direction, that is, the arc shape is set at an angle.

[0011] Preferably, the direction of the axis of rotation of the valve core is defined as the first direction, and the direction perpendicular to the first direction is defined as the second direction. The arc is along the second direction, and the end of the arc is close to the center of the valve port along the first direction relative to the middle of the arc.

[0012] Preferably, the arc shape can also be set along the second direction and have a certain angle with the second direction, that is, the arc shape is set at an angle.

[0013] Preferably, the sealing gasket includes a first sealing gasket that at least partially encloses the outer periphery of the valve core, and a second sealing gasket that at least partially encloses the outer periphery of the valve core.

[0014] Preferably, the valve core includes a valve core port and a mounting groove surrounding the valve core port, and a sealing gasket is embedded in the mounting groove. The valve core port is connected to the valve port to allow the flow of fluid medium.

[0015] Preferably, the valve core further includes a plurality of mounting protrusions that extend into the mounting groove along a direction perpendicular to the side wall of the mounting groove, and the mounting protrusions abut against the sealing gasket.

[0016] Preferably, the valve port includes eight ports arranged circumferentially in the direction of the axis of rotation around the valve core, and the number of clearance grooves is the same as the number of valve ports.

[0017] A thermal management system includes an actuator, a drive motor, a transmission gear assembly, and a multi-way valve as described above.

[0018] The multi-way valve and thermal management system provided by this utility model, by setting the groove around the valve port as an arc groove, makes the sealing gasket continuously change with the inner surface of the valve body when it passes the clearance groove during the rotation of the valve core. This avoids the situation where the compression of the sealing gasket first decreases and then increases when it passes the edge of the valve port, which would cause a sudden increase in the torque of the valve core rotation. Under the premise of ensuring the water valve sealing performance and water inlet and outlet efficiency remain unchanged, it reduces the sudden increase in torque when the valve core rotates to the edge of the water outlet on the inner wall of the valve body, and reduces the performance requirements of the motor and transmission system in the actuator. Attached Figure Description

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: Figure 1 Exploded view of a multi-way valve; Figure 2 for Figure 1 A magnified view of a portion of position A in the middle; Figure 3 Here is a schematic diagram of the valve housing and a partial enlarged view of position B; Figure 4 This is a top view of the valve housing and a sectional view along position AA; Figure 5 for Figure 4 A magnified view of the area at position C in the middle; Figure 6 This is a front view of the valve housing and a sectional view along the BB position.

[0020] Explanation of icon numbers: 10. Valve cover; 20. Valve core; 30. Sealing gasket; 40. Valve body; 100. Multi-way valve; 201. Mounting groove; 202. Mounting protrusion; 301. First sealing gasket; 302. Second sealing gasket; 401. Valve port; 402. Clearance groove; 4021. Short edge; 4022. Arc edge; 4023. First transition arc surface; 4024. Second transition arc surface; x, first direction; y, second direction. Detailed Implementation

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] To keep the drawings concise, only the parts relevant to this invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0023] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0024] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection 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.

[0025] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0027] See Figures 1 to 6 As shown, this embodiment provides a multi-way valve 100, including a valve cover 10, a valve housing 40, a valve core 20, and a sealing gasket 30. The valve housing 40 is fixed below the valve cover 10. The valve core 20 is placed inside the valve housing 40 and rotates relative to the valve housing 40. The sealing gasket 30 is fixed to the valve core 20 and is placed between the valve core 20 and the valve housing 40, contacting the inner surface of the valve housing 40. The valve housing 40 includes a valve port 401 communicating from the inner surface of the valve housing 40 to the outside of the valve housing 40, and a clearance groove 402 placed on the inner surface of the valve housing 40 and surrounding the valve port 401. The clearance groove 402 includes two arc-shaped edges 4022 disposed opposite to the valve port 401 and two short edges 4021 respectively connecting the two ends of the two arc-shaped edges 4022. The length of the arc-shaped edges 4022 is greater than the length of the short edges 4021.

[0028] See Figure 1 As shown, the sealing gasket 30 includes a first sealing gasket 301 that at least partially encloses the outer periphery of the valve core 20, and a second sealing gasket 302 that at least partially encloses the outer periphery of the valve core 20.

[0029] See Figure 2 As shown, the valve core 20 includes a valve core 20 port and a mounting groove 201 surrounding the valve core 20 port. A sealing gasket 30 is embedded in the mounting groove 201. The valve core 20 port is connected to the valve port 401 to allow the flow of fluid medium. Further, a first sealing gasket 301 is embedded in the mounting groove 201, and a second sealing gasket 302 is embedded in the mounting groove 201.

[0030] The valve core 20 also includes a plurality of mounting protrusions 202 that are placed on the side wall of the mounting groove 201 and extend toward the mounting groove 201 in a direction perpendicular to the side wall of the mounting groove 201. The mounting protrusions 202 abut against the sealing gasket 30.

[0031] See Figure 3 and Figure 5 As shown, the clearance groove 402 also includes a first transition arc surface 4023 disposed at the junction of the arc edge and the inner surface of the valve housing 40, and a second transition arc surface 4024 disposed between the first transition arc surface 4023 and the bottom of the clearance groove 402, the second transition arc surface 4024 forming the inner wall of the clearance groove 402.

[0032] See Figure 4 and Figure 5 As shown, the direction of the axis of rotation of the valve core 20 is defined as the first direction x, and the direction perpendicular to the first direction x is defined as the second direction y. The arc is set along the first direction x, and the end of the arc is close to the center of the valve port 401 along the second direction y relative to the middle of the arc.

[0033] Similarly, the arc can also be set along the first direction x, and has a certain angle with the first direction x.

[0034] See Figure 6 As shown, the multi-way valve in this embodiment takes an eight-way valve as an example. The valve port 401 includes eight ports arranged circumferentially around the axis of rotation of the valve core 20. The number of clearance grooves 402 is the same as that of the valve port 401. Optionally, the multi-way valve 100 in this embodiment can also be a three-way valve, a four-way valve, a six-way valve, or other multi-way valves.

[0035] In this embodiment, during operation, when the valve core 20 rotates, the sealing gasket 30 rotates accordingly. As the sealing gasket 30 passes through the valve port 401, it first approaches the relief groove 402, passes through the relief groove 402, and then moves away from the relief groove 402. During this process, the amount of compression on the sealing gasket 30 gradually decreases and then gradually increases. The contact area between the sealing gasket 30 and the inner surface of the valve body 40 undergoes continuous change. That is, when the sealing gasket 30 moves in and out of the valve port 401 of the valve body 40 as the valve core 20 rotates, the process of the sudden change in the amount of compression at the edge of the sealing gasket 30 is lengthened, thereby reducing the torque of the valve core 20 during this process. Therefore, while ensuring the sealing performance of the multi-way valve, the requirement for output torque is reduced, which also reduces the requirements for the performance of the motor driving the valve core 20 and the reduction ratio of the transmission system, thereby improving the working efficiency of the multi-way valve 100.

[0036] This embodiment also provides a thermal management system, including an actuator, a drive motor, a transmission gear assembly, and a multi-way valve 100 as described above. The actuator controls the motor to output power to the transmission gear assembly, thereby driving the valve core 20 to rotate and select the valve port 401.

[0037] It will be apparent to those skilled in the art that various modifications and variations can be made to the exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention cover modifications and variations falling within the scope of the appended claims and their equivalents.

Claims

1. A multi-way valve, characterized in that, include: Valve cover; A valve housing, fixed below the valve cover, the valve housing including a valve port communicating from the inner surface of the valve housing to the outside of the valve housing, and a clearance groove disposed on the inner surface of the valve housing and surrounding the valve port; A valve core, which is placed inside the valve housing and rotatably disposed relative to the valve housing; A sealing gasket, which is fixed to the valve core and is positioned between the valve core and the valve housing, in contact with the inner surface of the valve housing; The clearance groove includes two arc-shaped edges positioned opposite the valve port.

2. The multi-way valve as described in claim 1, characterized in that, The clearance groove further includes a first transition arc surface disposed at the junction of the edge of the arc and the inner surface of the valve body, and a second transition arc surface disposed between the first transition arc surface and the bottom of the clearance groove, wherein the second transition arc surface forms the inner wall of the clearance groove.

3. The multi-way valve as described in claim 2, characterized in that, The clearance groove also includes two short edges that connect the two ends of the two arc-shaped edges respectively, and the length of the arc-shaped edges is greater than the length of the short edges.

4. The multi-way valve as described in claim 3, characterized in that, The direction of the axis of rotation of the valve core is defined as the first direction, and the direction perpendicular to the first direction is defined as the second direction. The arc is set along the first direction, and the end of the arc is close to the center of the valve port along the second direction relative to the middle of the arc.

5. The multi-way valve as described in claim 3, characterized in that, The direction of the axis of rotation of the valve core is defined as the first direction, and the direction perpendicular to the first direction is defined as the second direction. The arc is along the second direction, and the end of the arc is close to the center of the valve port along the first direction relative to the middle of the arc.

6. The multi-way valve as described in claim 4 or claim 5, characterized in that, The sealing gasket includes a first sealing gasket that at least partially encloses the outer periphery of the valve core, and a second sealing gasket that at least partially encloses the outer periphery of the valve core.

7. The multi-way valve as described in claim 6, characterized in that, The valve core includes a valve core port and a mounting groove surrounding the valve core port. The sealing gasket is embedded in the mounting groove. The valve core port is connected to the valve port to allow the flow of fluid medium.

8. The multi-way valve as described in claim 7, characterized in that, The valve core also includes a plurality of mounting protrusions that are placed on the side wall of the mounting groove and extend toward the mounting groove in a direction perpendicular to the side wall of the mounting groove, and the mounting protrusions abut against the sealing gasket.

9. The multi-way valve as described in claim 8, characterized in that, The valve port includes eight ports arranged circumferentially around the axis of rotation of the valve core, and the number of clearance grooves is the same as the number of valve ports.

10. A thermal management system, characterized in that, It includes an actuator, a drive motor, a transmission gear assembly, and a multi-way valve as described in claim 1 or claim 9.

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