Multi-way valve

Abstract

The utility model provides a multi-way valve, including valve body subassembly and actuator subassembly, valve body subassembly includes bonnet, valve casing, spool and seal ring, valve casing includes receiving portion and base, base includes at least one valve port that runs through the base and receiving portion, spool includes at least one core port, and the seal ring is inserted into the valve port. The sealing ring is fixed to the base and comprises a middle through hole and peripheral through holes arranged around the center of the middle through hole in a circular array mode. The projection of the peripheral through holes on the base falls on the valve port, and the projection area is smaller than the projection area of the valve port and larger than or equal to the projection of the core port on the base. According to the multi-way valve, the problem of internal leakage of the multi-way valve is solved, meanwhile, force which needs to be applied externally and enables the sealing gasket to be tightly attached to the end face of the valve element is smaller, torque needed by rotation of the valve element is reduced, and therefore the requirement for the output performance of an actuator is lowered.

Description

Technical Field

[0001] This utility model relates to the field of fluid control, and in particular to a multi-way valve. Background Technology

[0002] In current development, thermal management systems for new energy vehicles are moving towards integration. These systems typically utilize multiple fluid control devices across their various subsystems. To address internal leakage, the associated technology requires a significant external force to ensure a tight seal between the valve core and the internal gasket, resulting in a higher torque required for valve core rotation. This places higher demands on the actuator's output torque, consequently requiring higher performance from the motor and a more efficient reduction ratio in the transmission system. Therefore, reducing the torque required for valve core rotation and lowering the performance requirements of the actuator's motor and transmission system while simultaneously addressing internal leakage is a crucial consideration during the research and development process.

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

[0004] The purpose of this invention is to provide a multi-way valve that solves the problem of internal leakage, reduces the torque required for valve core rotation, and thus reduces the performance requirements of the motor and transmission system in the actuator.

[0005] According to one aspect of the present invention, a multi-way valve is provided, including a valve body assembly and an actuator assembly disposed above the valve body assembly for driving the valve body assembly to work. The valve body assembly includes a valve cover, a valve shell, a valve core, and a sealing ring. The valve cover is disposed below the actuator assembly and fixedly connected to the actuator assembly. The valve shell is fixed below the valve cover. The valve shell includes a receiving portion having an internal receiving cavity and a base disposed below the receiving portion. The base includes at least one valve port passing through the base and the receiving portion for circulating fluid medium. The valve core is disposed in the receiving cavity of the receiving portion. The valve core includes at least one core port corresponding to the valve port for circulating fluid medium. The core port has the same shape as the valve port, and its projection on the base falls on the valve port. The sealing ring is fixed to the base and at least partially fits the valve core to reduce the internal leakage of the multi-way valve. The sealing ring includes a central through hole and peripheral through holes arranged in a circular array around the center of the central through hole. The projection of the peripheral through holes on the base falls on the valve port, and the projection area is smaller than the valve port projection area and greater than or equal to the projection of the core port on the base. The above solution ensures that when the fluid medium flows through the valve port, a portion of it impacts the area near the peripheral through-hole on the sealing gasket. This impact force causes the surface of the sealing gasket near the peripheral through-hole, facing the valve core, to fit tightly against the valve core end face, thus creating a hydraulic self-sealing effect. This prevents internal flow between different flow channels, improves the internal leakage problem of the valve body, and reduces the external force required to make the sealing gasket fit tightly against the valve core end face, thereby reducing the torque required for valve core rotation and lowering the requirements for the output performance of the actuator.

[0006] Preferably, the size of the peripheral through hole is smaller than the valve port and does not exceed the size of the core port.

[0007] Preferably, the edge thickness of the peripheral through hole is less than the thickness of the sealing ring. This design helps to achieve a better fit between the sealing ring and the valve core.

[0008] Preferably, the valve port is fan-shaped, and the peripheral through holes are the same shape and number as the valve port, with at least two peripheral through holes.

[0009] Preferably, the base also includes a central hole corresponding to the central hole, which can be used to allow fluid to flow or to achieve positioning or limiting.

[0010] Preferably, the through hole in the middle is circular and larger than the central hole.

[0011] Preferably, the number of valve ports can be six.

[0012] Preferably, the base is provided with a groove corresponding to the contour of the sealing ring, and the sealing ring is placed in the groove and fixedly connected to the groove.

[0013] Preferably, the sealing ring and the groove are integrally vulcanized or bonded. This approach helps to tightly connect the valve body and the sealing gasket, improving the sealing performance of the multi-way valve.

[0014] Preferably, the valve cover is welded to the valve body.

[0015] Preferably, the valve body assembly further includes a friction ring coaxially arranged with the valve core and positioned between the valve cover and the valve core. The friction ring engages with the valve cover and at least partially contacts the valve core to reduce friction. With this design, the frictional force required to rotate the valve core is reduced, thereby helping to decrease the torque required for valve core rotation.

[0016] Preferably, the valve body assembly further includes a shaft seal disposed between the valve cover and the valve core and sleeved on the valve core.

[0017] Preferably, the valve body assembly further includes an outer sealing mesh located on the side of the base away from the valve core.

[0018] Preferably, the actuator assembly includes a drive motor and a transmission assembly meshing with the drive motor, the transmission assembly meshing with the upper end of the valve core to drive the valve core to rotate.

[0019] This utility model provides a multi-way valve including a valve body assembly and an actuator assembly. The valve body assembly includes a valve cover, a valve core, a valve shell, and a sealing ring. The internal leakage problem of the multi-way valve is improved by the projection of the peripheral through hole of the sealing ring onto the valve port on the base, and the projection area is smaller than the projection area of ​​the valve port but larger than or equal to the projection of the core port on the base. At the same time, the external force required to make the sealing gasket fit tightly against the end face of the valve core is smaller, reducing the torque required for the valve core to rotate, thereby reducing the requirements for the output performance of the actuator. Attached Figure Description

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0021] Figure 1 This is a schematic diagram of the multi-way valve.

[0022] Figure 2 This is a cross-sectional view of the valve body assembly;

[0023] Figure 3 This is a schematic diagram of the valve body and the sealing ring;

[0024] Figure 4 for Figure 3 A sectional view along position AA;

[0025] Figure 5 This is an exploded view of the valve body and sealing ring.

[0026] Figure 6 This is a schematic diagram of a partial structure of a multi-way valve.

[0027] Explanation of icon numbers:

[0028] 10. Actuator assembly; 20. Valve body assembly; 101. Drive motor; 102. Transmission assembly; 201. Valve core; 202. Valve cover; 203. Oil seal; 204. Friction ring; 205. Valve housing; 206. Sealing ring; 207. Outer sealing mesh; 2011. Core opening; 2051. Receiving part; 2052. Groove; 2053. Base; 2054. Valve port; 2055. Center hole; 2061. Peripheral through hole; 2062. Central through hole; M. First surface; N. Second surface; P. Third surface. Detailed Implementation

[0029] 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.

[0030] 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."

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] The embodiments for carrying out this application will be described based on the accompanying drawings. It should be noted that, in the following description, for ease of describing the positional relationships between the various components in this embodiment, the direction of the straight line "up" is set to "above" (refer to...). Figure 1 Set the direction of the straight line "down" to "below" (refer to...). Figure 1 This does not represent the upper or lower aspects of this embodiment in actual application scenarios.

[0036] See Figures 1 to 6 As shown, this embodiment provides a multi-way valve, including a valve body assembly 20 and an actuator assembly 10 placed above the valve body assembly 20 for driving the valve body assembly 20 to work.

[0037] See Figure 2 As shown, the valve body assembly 20 includes a valve cover 202, a valve housing 205, a valve core 201, a sealing ring 206, an oil seal 203, and a friction ring 204. The valve cover 202 is located below the actuator assembly 10 and is fixedly connected to the actuator. The valve housing 205 is fixed to the bottom of the valve cover 202 by laser welding. The valve housing 205 includes a receiving part 2051 with an internal receiving cavity and a base 2053 located below the receiving part 2051. The valve core 201 is placed in the receiving cavity of the receiving part 2051 and the actuator. The friction ring 204 is coaxially arranged with the valve core 201 and placed between the valve cover 202 and the valve core 201. The friction ring 204 is snapped into the valve cover 202 and at least partially in contact with the valve core 201 to reduce the friction when the valve core 201 rotates. The shaft seal is placed between the valve cover 202 and the valve core 201 and is sleeved on the valve core 201. The outer sealing mesh 207 is placed on the side of the base 2053 away from the valve core 201 and is fixedly connected to the base 2053.

[0038] See Figure 2 and Figure 3 As shown, the base 2053 includes at least one valve port 2054 that passes through the base 2053 and the receiving portion 2051 for the flow of fluid medium. The base 2053 is provided with a groove 2052 corresponding to the contour of the sealing ring 206. The valve core 201 includes at least one core port 2011 that is provided corresponding to the valve port 2054 for the flow of fluid medium. The core port 2011 has the same shape as the valve port 2054 and its projection on the base 2053 falls on the valve port 2054.

[0039] See Figure 4 and Figure 5 As shown, the sealing ring 206 is fixedly connected to the groove 2052. Specifically, the first surface M of the sealing ring 206 is integrally vulcanized or bonded to the groove 2052. The side of the sealing ring 206 facing the valve core 201 (i.e., the third surface P of the sealing ring 206) is at least partially in contact with the valve core 201 to reduce the internal leakage of the multi-way valve. The sealing ring 206 includes a central through hole 2062 and peripheral through holes 2061 arranged in a circular array around the center of the central through hole 2062. The projection of the peripheral through holes 2061 on the base 2053 falls on the valve port 2054, and the projected area is smaller than the projected area of ​​the valve port 2054 but greater than or equal to the projection of the core port 2011 on the base 2053. The edge thickness is less than the thickness of the sealing ring 206. When the fluid medium flows through the valve port 2054, a portion of it will impact the position of the sealing gasket near the peripheral through hole 2061 (i.e., the second surface N of the sealing ring 206). The resulting impact force on the sealing gasket will tightly adhere the surface of the sealing gasket near the peripheral through hole 2061 facing the valve core 201 (i.e., the third surface P of the sealing ring 206) to the end face of the valve core 201, thereby producing a hydraulic self-sealing effect. This prevents internal flow between different flow channels, improves the internal leakage problem of the valve body, and at the same time, the external force required to tightly adhere the sealing gasket to the end face of the valve core 201 is smaller, reducing the torque required for the rotation of the valve core 201 and reducing the requirements for the output performance of the actuator.

[0040] In this embodiment, the valve port 2054 is arranged in a fan shape, and the peripheral through holes 2061 have the same shape and the same number as the valve port 2054. The number of peripheral through holes 2061 is at least two. Further, in this embodiment, the number of valve ports 2054 and the number of peripheral through holes 2061 are both six.

[0041] The base 2053 also includes a center hole 2055 corresponding to the center hole 2055. The center hole 2055 can be used to flow fluid medium or to achieve positioning and limiting. The intermediate through hole 2062 is circular and is larger than the center hole 2055.

[0042] See Figure 6 As shown, the actuator assembly 10 includes a drive motor 101 and a transmission assembly 102 meshing with the drive motor 101. The transmission assembly 102 meshes with the upper end of the valve core 201 to drive the valve core 201 to rotate.

[0043] This utility model provides a multi-way valve including a valve body assembly and an actuator assembly. The valve body assembly includes a valve cover, a valve core, a valve shell, and a sealing ring. The internal leakage problem of the multi-way valve is improved by the projection of the peripheral through hole of the sealing ring onto the valve port on the base, and the projection area is smaller than the projection area of ​​the valve port but larger than or equal to the projection of the core port on the base. At the same time, the external force required to make the sealing gasket fit tightly against the end face of the valve core is smaller, reducing the torque required for the valve core to rotate, thereby reducing the requirements for the output performance of the actuator.

[0044] It should be noted that the multi-way valve in this embodiment is a six-way valve, but it can also be other types of multi-way valves, such as four-way valves, five-way valves, seven-way valves, etc. The principle of the technical solution in this embodiment can be applied not only to flat water valves (disc valves) but also to column valves.

[0045] 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: The valve body assembly includes a valve body assembly and an actuator assembly positioned above the valve body assembly for driving the valve body assembly. The valve body assembly includes: A valve cover, which is located below the actuator assembly and fixedly connected to the actuator assembly; A valve housing, fixed below the valve cover, the valve housing including a receiving portion having an internal receiving cavity and a base located below the receiving portion, the base including at least one valve port passing through the base and the receiving portion for circulating fluid medium; A valve core is placed in the receiving cavity of the receiving part. The valve core includes at least one core port that is provided corresponding to the valve port for the flow of fluid medium. The core port has the same shape as the valve port and its projection on the base falls on the valve port. A sealing ring is fixed to the base and at least partially fits the valve core to reduce internal leakage of the multi-way valve. The sealing ring includes a central through hole and peripheral through holes arranged in a central circular array around the central through hole. The projection of the peripheral through holes on the base falls on the valve port and the projected area is smaller than the projected area of ​​the valve port and greater than or equal to the projection of the valve core on the base.

2. A multi-way valve as described in claim 1, characterized in that: The edge thickness of the peripheral through hole is less than the thickness of the sealing ring.

3. A multi-way valve as described in claim 2, characterized in that: The valve port is arranged in a fan shape, and the peripheral through holes are the same shape and equal in number to the valve port, with at least two peripheral through holes.

4. A multi-way valve as described in claim 3, characterized in that: The base is provided with a groove corresponding to the outline of the sealing ring, and the sealing ring is placed in the groove and fixedly connected to the groove.

5. A multi-way valve as described in claim 4, characterized in that: The sealing ring is integrally vulcanized or bonded to the groove.

6. A multi-way valve as described in claim 5, characterized in that: The valve cover is welded to the valve body.

7. A multi-way valve as described in claim 6, characterized in that: The valve body assembly further includes a friction ring coaxially arranged with the valve core and positioned between the valve cover and the valve core, the friction ring being engaged with the valve cover and at least partially in contact with the valve core to reduce friction.

8. A multi-way valve as described in claim 7, characterized in that: The valve body assembly also includes a shaft seal located between the valve cover and the valve core and sleeved on the valve core.

9. A multi-way valve as described in claim 8, characterized in that: The valve body assembly also includes an outer sealing mesh placed on the side of the base away from the valve core.

10. A multi-way valve as described in claim 9, characterized in that: The actuator assembly includes a drive motor and a transmission assembly meshing with the drive motor. The transmission assembly meshes with the upper end of the valve core to drive the valve core to rotate.

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