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CN-121993648-A - Valve

CN121993648ACN 121993648 ACN121993648 ACN 121993648ACN-121993648-A

Abstract

The application provides a valve, which comprises a valve body with a valve cavity and a valve core, wherein the valve cavity is provided with a cavity wall, the valve body is provided with at least one fluid channel which is communicated with the cavity wall, the valve core is arranged in the valve cavity and is provided with a channel structure which is communicated with the fluid channel, the fluid channel is provided with a sealing element, the sealing element is arranged on the cavity wall, and the sealing element is in a plane structure and comprises at least two layers. In the valve, the sealing element is easy to manufacture and low in cost due to the planar structure of the sealing element, the positioning of the sealing element in the assembly process is simple, and the high sealing effect can be realized under low friction force through the design of at least two layers of the sealing element, so that the torque required for moving the valve core is reduced, and a more economical actuator can be used. Thus, the valve has low manufacturing cost and long service life.

Inventors

  • Altem Tukin

Assignees

  • TI汽车技术中心有限责任公司

Dates

Publication Date
20260508
Application Date
20251103
Priority Date
20241108

Claims (20)

  1. 1. Valve (1) comprising a valve body (2) with a valve cavity (3) and a valve core (6), wherein the valve cavity (3) is provided with a cavity wall (4), the valve body (2) is provided with at least one fluid channel (5) which is communicated with the cavity wall (4), the valve core (6) is arranged in the valve cavity (3), and the valve core (6) is provided with a channel structure (7) which is mutually communicated with the fluid channel (5), and is characterized in that the fluid channel (5) is provided with a sealing element (8), the sealing element (8) is arranged on the cavity wall (4), and the sealing element (8) is of a plane structure and comprises at least two layers (9, 10).
  2. 2. Valve according to claim 1, characterized in that the seal (8) is rectangular and is provided with a defined opening (11) corresponding to the fluid channel (5).
  3. 3. Valve according to claim 2, characterized in that the seal (8) is provided with a sealing flange (12) at the edge of at least one side of the defined opening (11).
  4. 4. A valve according to claim 3, characterized in that the sealing element (8) is provided with the sealing flange (12) at the edges of both sides of the defined opening (11).
  5. 5. A valve according to claim 3, wherein the sealing flange (12) has an arcuate profile in cross section.
  6. 6. A valve according to claim 3, wherein the sealing flange (12) forms a first face contact region (19).
  7. 7. A valve according to claim 3, characterized in that the sealing element (8) is provided with a support flange (13) on the axial edge.
  8. 8. The valve according to claim 7, wherein the support flange (13) has an arcuate profile in cross section.
  9. 9. The valve according to claim 7, wherein the support flange (13) forms a second face contact area (19').
  10. 10. The valve according to claim 7, wherein the chamber wall (4) is provided with support ribs (14) on both sides of the fluid channel (5), the support ribs (14) extending in the axial direction and protruding radially inwards, and the seal (8) is arranged between the two support ribs (14).
  11. 11. The valve according to claim 10, characterized in that the support flange (13) abuts against the support rib (14).
  12. 12. Valve according to any one of claims 1 to 11, characterized in that the valve (1) is a rotary valve with a cylindrical valve chamber (3).
  13. 13. Valve according to any one of claims 1 to 11, characterized in that the valve (1) is a proportional valve or an on-off valve.
  14. 14. Valve according to any one of claims 1 to 11, characterized in that said at least two layers (9, 10) comprise a first layer (9) and a second layer (10), said first layer (9) being made of an elastomeric material, the second layer (10) being made of a low friction coefficient material, said second layer (10) facing said valve core (6).
  15. 15. The valve according to claim 14, wherein the second layer (10) is made of PTFE.
  16. 16. The valve according to claim 14, characterized in that the first layer (9) is made of EPDM.
  17. 17. The valve according to claim 4, characterized in that the section of the sealing flange (12) facing the valve core (6) and the chamber wall (4) has a plateau contour and that the sealing flange (12) can be flattened.
  18. 18. The valve according to claim 1, characterized in that the valve body (2) is provided with a mounting opening (15).
  19. 19. The valve according to claim 18, characterized in that the mounting opening (15) interacts in a fluid-conducting manner with the channel structure (7) of the valve cartridge (6).
  20. 20. Valve according to claim 18 or 19, characterized in that the valve spool (6) is supported on one side at a through opening (16) opposite the mounting opening (15).

Description

Valve Technical Field The application relates to the technical field of valves, in particular to a valve. Background The valve comprises a valve body with a valve cavity, wherein the valve cavity has a cavity wall, to which at least one fluid channel opens, wherein a valve cartridge is mounted in the valve cavity, wherein the valve cartridge has a channel structure interacting with the fluid channel, wherein a seal is assigned to the fluid channel. Valves of this type are disclosed in WO 2017/095994 A1. The valve described therein is designed as a rotary valve for controlling the flow of coolant in a cooling circuit. Cooling fluid may flow into and out of the valve through a fluid opening into the valve body. The channel structure of the inlet valve core controls the flow of the coolant, wherein different cooling circuits can be controlled according to the design and the number of the fluid channels, the volume flow of the coolant is regulated and/or the flow direction of the coolant is regulated. In rotary valves, coolant flow is regulated by rotating a spool, and the corresponding actuator for rotating the spool is simple in construction and easy to control. Thus, the rotary valve and its associated actuator can be manufactured economically and require little installation space. Rotary valves are therefore particularly advantageous for use in temperature control circuits in the field of electric vehicles. Components of electric vehicles that require temperature control include, inter alia, electrical energy storage, power electronics, and connectors for quick charge facilities. The temperature control medium flowing through the temperature control circuit may be heated in a heating device or cooled in a cooling device, as desired. The control of the temperature control medium is performed by one or more rotary valves. In order to avoid internal leakage, a sealing body is arranged in the transition region between the fluid channel and the valve element. The problem here is that, depending on the design, the sealing body may lead to high friction forces, which adversely affect the wear of the actuator and the required adjustment forces. On the other hand, internal leakage between the valve body and the valve spool should be avoided as much as possible. Disclosure of Invention The application aims to provide a valve which is low in manufacturing cost and long in service life. In order to achieve the above object, the technical solution of the embodiment of the present application is as follows: the application provides a valve, which comprises a valve body with a valve cavity and a valve core, wherein the valve cavity is provided with a cavity wall, the valve body is provided with at least one fluid channel which is communicated with the cavity wall, the valve core is arranged in the valve cavity and is provided with a channel structure which is communicated with the fluid channel, the fluid channel is provided with a sealing element, the sealing element is arranged on the cavity wall, and the sealing element is in a plane structure and comprises at least two layers. In one embodiment, the seal is rectangular and is provided with a defined opening corresponding to the fluid passage. In one embodiment, the seal is provided with a sealing flange at the edge of at least one side of the defined opening. In one embodiment, the seal is provided with the sealing flange at the edges of both sides of the defined opening. In one embodiment, the sealing flange has an arcuate profile in cross-section. In one embodiment, the sealing flange forms a first face contact area. In one embodiment, the seal is provided with a support flange on the axial edge. In one embodiment, the support flange has an arcuate profile in cross-section. In one embodiment, the support flange forms a second face contact region. In one embodiment, the chamber wall is provided with support ribs on both sides of the fluid channel, the support ribs extending in the axial direction and protruding radially inwards, the seal being arranged between the two support ribs. In one embodiment, the support flange abuts the support rib. In one embodiment, the valve is a rotary valve having a cylindrical valve chamber. In one embodiment, the valve is a proportional valve or an on-off valve. In one embodiment, the at least two layers include a first layer made of an elastomeric material and a second layer made of a low coefficient of friction material, the second layer facing the valve core. In one embodiment, the second layer is made of PTFE. In one embodiment, the first layer is made of EPDM. In one embodiment, the section of the sealing flange facing the valve core and the chamber wall has a plateau profile, and the sealing flange can be flattened. In one embodiment, the valve body is provided with a mounting opening. In one embodiment, the mounting opening interacts in a fluid-conducting manner with the channel structure of the valve cartridge. In one embodime