One-way valve and two-way stop valve of thermal management system
By designing a combined structure of the valve plug, limit edge and limit cover in the thermal management system, the spring provides elastic force to ensure sealing and achieve one-way conduction, solving the abnormal noise and damage caused by the collision between the valve core and the valve body, and improving the stability and flow reliability of the system.
Patent Information
- Application Number
- CN202510647215.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-20
- Publication Date
- 2025-08-19
AI Technical Summary
In the thermal management system, traditional check valves have problems such as insufficient strength of the diaphragm valve core, which leads to reverse deformation and leakage, and the impact between the valve core and the valve body leads to abnormal noise and damage.
A thermal management system check valve is designed, adopting a combined structure of the valve plug, the limiting edge and the limiting cover. The spring provides elastic force towards the flow channel entrance direction to ensure that the sealing ring is in close contact under natural conditions. The valve plug fails when it moves in the flow channel entrance direction, achieving one-way conduction, and improving the flow resistance effect and structural compactness through the flow channel guide groove and limiting part.
Effectively prevent the reverse flow of coolant, reduce the impact noise between the valve core and the valve body, improve service life and system stability, reduce flow resistance, and have a simple and reliable structure.
Smart Images
Figure CN120506519A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of automobile valve manufacturing, and in particular to a one-way valve and a two-way stop valve for a thermal management system. Background Art
[0002] With the rapid development of new energy vehicles, energy storage systems, and other fields, efficient thermal management systems are placing higher demands on fluid control. As a key component in thermal management systems, one-way water valves ensure unidirectional flow of coolant or heat transfer fluid, preventing backflow and thus improving system stability and efficiency. Traditional one-way valves have several practical issues. The insufficient strength of diaphragm valve cores can lead to reverse deformation and leakage. In spool-type one-way valves, impact between the valve core and the valve body can cause abnormal noise and damage. Summary of the Invention
[0003] In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a one-way valve for a thermal management system, which can reduce abnormal noise and damage caused by the collision between the valve core and the valve body during use while ensuring the sealing effect.
[0004] In order to achieve the above object, the present invention is implemented through the following technical solutions: A one-way valve for a thermal management system, comprising: A valve housing, wherein a valve cavity is provided in the valve housing, a first annular limit stop edge is provided in the valve cavity, a flow channel outlet is provided at one end of the valve cavity, and a flow channel inlet is provided at the other end of the valve cavity; A limit cover is provided at one end of the valve cavity corresponding to the flow channel outlet; The valve plug has a second annular limit stop edge provided on its periphery. The valve plug is movably placed in the valve cavity and limited between the first annular limit stop edge and the limit cover. When the valve plug moves toward the flow channel inlet, the second annular limit stop edge is limited by the first annular limit stop edge. A sealing ring is provided on the valve plug hoop, and the sealing ring abuts against the second annular limit stop edge on the side closest to the first annular limit stop edge. The spring contacts the valve plug and applies elastic force to the valve plug toward the flow channel inlet, so that in a natural state, the sealing ring is axially in close contact with the first annular limit stop edge and the second annular limit stop edge, and the flow channel in the valve cavity is closed.
[0005] Furthermore, in a one-way valve of a thermal management system in the present application, the valve cavity is axially extended, and the cross section of the valve cavity is a circle concentric with the first annular limit stop edge.
[0006] Furthermore, in a thermal management system one-way valve in the present application, the valve plug is integrally provided with a second annular limit stop edge, the valve plug protruding from the second annular limit stop edge toward the flow channel inlet, the valve plug includes an integrally provided guide section and a mounting section, the guide section being provided at one end of the mounting section near the flow channel inlet, the guide section being tapered at the end near the flow channel inlet, and a sealing ring being provided on the mounting section. In a natural state, after the second annular limit stop edge is limited by the first annular limit stop edge, the guide section extends from the annular cavity of the first annular limit stop edge. As a preferred embodiment of the present application, this can reduce the flow resistance of the one-way valve when it is in a conducting state.
[0007] Furthermore, in a one-way valve of a thermal management system in the present application, a guide groove is provided on the side of the guide section, the guide groove axially passes through both ends of the guide section, and the guide groove is arranged in an array in the circumferential direction of the corresponding valve cavity.
[0008] Furthermore, in a thermal management system one-way valve in this application, the guide groove extends axially, the guide section includes a circumferential array of ribs, and the groove cavity of the guide groove is confined between a pair of circumferentially adjacent ribs. This is a preferred embodiment of this application to further reduce flow resistance.
[0009] Furthermore, in a one-way valve for a thermal management system in the present application, the limit cover is connected to the inner side of the valve cavity by a buckle, and the flow channel outlet is provided on the limit cover. As a preferred solution of the present application, it has the advantages of simple connection and compact structure.
[0010] Furthermore, a thermal management system check valve disclosed herein has a retaining protrusion on the outer wall of a position-limiting cover, a retaining groove adapted to accommodate the retaining protrusion on the valve housing, and through-grooves extending through the valve housing at the corresponding flow channel outlet on either side of the retaining groove. The valve housing at the position of the retaining groove is separated from the valve housing by the through-grooves, so that the position-limiting cover can be elastically deformed to accommodate the retaining protrusion when installed.
[0011] Furthermore, in a thermal management system one-way valve disclosed herein, the stop cover is integrally provided with a guide post extending toward the flow channel inlet, the guide post being concentric with the valve cavity, and the valve plug is provided with a guide groove that slides with the guide post. As a preferred embodiment of the present invention, this can enhance the stability of the valve plug's movement within the valve cavity.
[0012] Furthermore, in a thermal management system one-way valve disclosed herein, the valve plug is provided with an annular wall extending toward the flow channel outlet. The inner wall of the annular wall defines a guide groove. A spring is sleeved on the outer side of the annular wall, with both ends of the spring respectively abutting the valve plug and a stopper cover. The valve plug and the stopper cover are provided with annular grooves for receiving the ends of the spring. As a preferred embodiment of this application, the outer wall of the annular wall serves as a stopper spring, while the inner wall serves as a stopper guide post, resulting in a compact structure.
[0013] Preferably, in a thermal management system one-way valve according to the present application, a radially protruding stopper is provided at one end of the valve housing near the flow channel inlet. The stopper is annular, and the radial dimension of the side of the stopper increases from the flow channel inlet to the flow channel outlet, forming a tapered surface. As a preferred embodiment of the present application, the stopper is used to be inserted into the tube body to enhance the tightness of the connection between the one-way valve and the tube body.
[0014] Preferably, in a one-way valve of a thermal management system in the present application, the outer wall of the valve housing is cylindrical to facilitate connection of pipelines at both ends.
[0015] A two-way stop valve comprises a pair of thermal management system one-way valves as described above, wherein the pair of thermal management system one-way valves are axially detachably connected, wherein the flow channel outlet of one thermal management system one-way valve is connected to the flow channel inlet of the other thermal management system one-way valve.
[0016] It can be seen from the above technical solution that the present invention has the following beneficial effects: The present invention provides a one-way valve for a thermal management system. After the valve housing is connected to the pipeline, if the liquid flows into the valve from the outlet of the flow channel, the valve cavity will be closed more tightly; if the liquid flows into the flow channel from the inlet of the flow channel, the valve plug will move toward the side away from the second annular limit stop edge, causing the seal to fail. The liquid flows through the flow channel between the valve cavity and the second annular limit stop edge in the radial direction and flows out from the flow channel outlet. The limit cover is used to limit the valve plug toward the outlet. Therefore, the effect of one-way conduction is achieved, and the structure is simple, the one-way flow blocking effect is good, and the reliability is good. It can effectively prevent the reverse flow of coolant in the automotive thermal management system. In addition, when the valve plug is reset from opening the valve cavity to closing the valve cavity, the sealing ring not only has a sealing effect but also can act as a buffer to alleviate the impact between the second annular limit stop edge and the first annular limit stop edge, so as to reduce abnormal noise and increase service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic structural diagram of a one-way valve for a thermal management system in one embodiment of the present application; Figure 2 This is an exploded view of a one-way valve of a thermal management system in one embodiment of the present application; Figure 3 This is a cross-sectional view of the internal structure of a one-way valve of a thermal management system in one embodiment of the present application; Figure 4 This is a schematic diagram of a one-way valve for a thermal management system in one embodiment of the present application (the valve housing is cylindrical); Figure 5 Schematic diagram of a two-way stop valve in one embodiment of the present application.
[0018] In the figure: 1-valve housing; 10-valve chamber; 101-first annular limit stop; 102-flow channel outlet; 103-flow channel inlet; 11-limiting part; 12-card groove; 13-through groove; 2-valve plug; 20-guide groove; 21-guide section; 210-guide groove; 211-rib plate; 22-mounting section; 23-sealing ring; 24-second annular limit stop; 25-annular wall; 3-limiting cover; 31-guide column; 32-card cam; 4-spring. DETAILED DESCRIPTION
[0019] Example 1 Combine Figures 1 to 3 A thermal management system one-way valve is shown, comprising: A valve housing 1 is provided with a valve cavity 10 in the valve housing 1, a first annular limit stop edge 101 is provided in the valve cavity 10, a flow channel outlet 102 is provided at one end of the valve cavity 10, and a flow channel inlet 103 is provided at the other end of the valve cavity 10; The limiting cover 3 is arranged at one end of the valve cavity 10 corresponding to the flow channel outlet 102; The valve plug 2 has a second annular limiting edge 24 disposed on its periphery. The valve plug 2 is movably positioned within the valve cavity 10 and is confined between the first annular limiting edge 101 and the limiting cover 3. During movement of the valve plug 2 toward the flow channel inlet 103, the second annular limiting edge 24 is limited by the first annular limiting edge 101. A sealing ring 23 is provided on the valve plug 2, abutting against the side of the second annular limiting edge 24 closest to the first annular limiting edge 101. Spring 4, said spring 4 contacts the valve plug 2 and applies an elastic force to the valve plug 2 in the direction of the flow channel inlet 103, so that in the natural state, the sealing ring 23 is axially in close contact with the first annular limit stop edge 101 and the second annular limit stop edge 24, and the flow channel in the valve cavity 10 is closed; Based on the above structure, the principle of the one-way valve of the thermal management system is: After the valve housing 1 is connected to the pipeline, if the liquid flows in from the flow channel outlet 102, the valve cavity 10 will be closed more tightly; if the liquid flows in from the flow channel inlet 103, the valve plug 2 will move toward the side away from the second annular limit stop 24, causing the seal to fail, and the liquid flows through the flow channel between the valve cavity 10 and the second annular limit stop 24 radially, and flows out from the flow channel outlet 102. The limit cover 3 is used to limit the valve plug 2 in the outlet direction. Therefore, the effect of one-way conduction is achieved, and the structure is simple, the one-way flow blocking effect is good, and the reliability is good. It can effectively prevent the reverse flow of coolant in the automotive thermal management system. In addition, when the valve plug 2 resets from opening the valve cavity 10 to closing the valve cavity 10, the sealing ring 23 not only has a sealing effect but also can act as a buffer to alleviate the impact between the second annular limit stop 24 and the first annular limit stop 101, so as to reduce abnormal noise and increase service life.
[0020] In this embodiment, the valve cavity 10 is axially extended, and the cross section of the valve cavity 10 is a circle concentric with the first annular limiting edge 101 .
[0021] In this embodiment, the valve plug 2 is integrally formed with a second annular limiting edge 24. The valve plug 2 protrudes from the second annular limiting edge 24 toward the flow channel inlet 103. The valve plug 2 includes an integral guide section 21 and a mounting section 22. The guide section 21 is disposed at the end of the mounting section 22 proximal to the flow channel inlet 103. The end of the guide section 21 proximal to the flow channel inlet 103 is tapered, and a sealing ring 23 is clamped onto the mounting section 22. In a natural state, after the second annular limiting edge 24 is limited by the first annular limiting edge 101, the guide section 21 extends out of the annular cavity of the first annular limiting edge 101. This reduces the flow resistance when the one-way valve is in the conducting state.
[0022] In this embodiment, a guide groove 210 is provided on the side of the guide section 21 . The guide groove 210 axially passes through both ends of the guide section 21 . The guide groove 210 is arranged in an array in the circumferential direction of the corresponding valve cavity 10 .
[0023] In this embodiment, the guide groove 210 extends axially, and the guide section 21 includes a group of ribs 211 in a circumferential array. The groove cavity of the guide groove 210 is confined between a pair of circumferentially adjacent ribs 211 to further reduce flow resistance.
[0024] In this embodiment, the position-limiting cover 3 is connected to the inner side of the valve cavity 10 via a snap-fit mechanism, and the flow channel outlet 102 is provided on the position-limiting cover 3. This has the advantages of simple connection and compact structure. Specifically, in this embodiment, a latching protrusion 32 is provided on the outer wall of the position-limiting cover 3, and a latching groove 12 is provided on the valve housing 1 to accommodate the latching protrusion 32. On either side of the latching groove 12 are through-grooves 13 that penetrate the valve housing 1 at the end corresponding to the flow channel outlet 102.
[0025] In this embodiment, the limit cover 3 is integrally provided with a guide post 31 extending toward the flow channel inlet 103. The guide post 31 is concentric with the valve cavity 10, and the valve plug 2 is provided with a guide groove 20 that slidably cooperates with the guide post 31. This can improve the stability of the valve plug 2 in the valve cavity 10.
[0026] In this embodiment, the valve plug 2 is provided with an annular wall 25 extending toward the flow channel outlet 102. The inner wall of the annular wall 25 defines a guide groove 20. The spring 4 is sleeved on the outer side of the annular wall 25, with both ends of the spring 4 respectively abutting the valve plug 2 and the limit cover 3. The valve plug 2 and the limit cover 3 are provided with annular grooves for receiving the ends of the spring 4. The outer wall of the annular wall 25 serves to limit the spring 4, while the inner wall serves to limit the guide post 31, resulting in a compact structure.
[0027] In this embodiment, the valve housing 1 is provided with a radially protruding limit portion 11 at one end near the flow channel inlet 103. The limit portion 11 is annular, and the radial dimension of the side of the limit portion 11 increases from the flow channel inlet 103 to the flow channel outlet 102 to form a conical surface. The limit portion 11 is used to be inserted into the pipe body to improve the tightness of the connection between the one-way valve and the pipe body. Figure 4 As shown, in other embodiments, the outer wall of the valve housing 1 is cylindrical to facilitate connection of pipelines at both ends.
[0028] Example 2 like Figure 5 As shown, this embodiment provides a two-way stop valve, including a pair of thermal management system one-way valves as described in Example 1, the pair of thermal management system one-way valves are axially detachably connected, and the flow channel outlet 102 of one thermal management system one-way valve is connected to the flow channel inlet 103 of the other thermal management system one-way valve.
[0029] The technical principles of the present invention have been described above in conjunction with specific embodiments. These descriptions are intended solely to illustrate the principles of the present invention and are not to be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, those skilled in the art will be able to conceive of other specific embodiments of the present invention without inventive effort, and such embodiments will fall within the scope of protection of the present invention.
Claims
1. A one-way valve for a thermal management system, characterized in that: include: A valve housing (1), wherein a valve cavity (10) is provided in the valve housing (1), a first annular limit stop edge (101) is provided in the valve cavity (10), a flow channel outlet (102) is provided at one end of the valve cavity (10), and a flow channel inlet (103) is provided at the other end of the valve cavity (10); A limiting cover (3), the limiting cover (3) is arranged at one end of the valve cavity (10) corresponding to the flow channel outlet (102); A valve plug (2), the outer periphery of the valve plug (2) is provided with a second annular limiting retaining edge (24), the valve plug (2) is movably placed in the valve cavity (10) and limited between the first annular limiting retaining edge (101) and the limiting cover (3), the second annular limiting retaining edge (24) is limited by the first annular limiting retaining edge (101) during the movement of the valve plug (2) toward the flow channel inlet (103), the valve plug (2) is provided with a sealing ring (23), and the sealing ring (23) abuts against the side of the second annular limiting retaining edge (24) close to the first annular limiting retaining edge (101); The spring (4) contacts the valve plug (2) and applies an elastic force to the valve plug (2) in the direction of the flow channel inlet (103), so that in a natural state, the sealing ring (23) is in close contact with the first annular limit stop edge (101) and the second annular limit stop edge (24) in the axial direction, and the flow channel in the valve cavity (10) is closed.
2. A thermal management system one-way valve according to claim 1, characterized in that: The valve cavity (10) is axially extended, and the cross section of the valve cavity (10) is circular and concentric with the first annular limiting retaining edge (101).
3. The one-way valve for a thermal management system according to claim 1, characterized in that: The valve plug (2) is integrally provided with the second annular limiting stop edge (24), and the valve plug (2) protrudes from the second annular limiting stop edge (24) toward the flow channel inlet (103). The valve plug (2) comprises an integrally provided guide section (21) and a mounting section (22), the guide section (21) being provided at one end of the mounting section (22) near the flow channel inlet (103), the end of the guide section (21) near the flow channel inlet (103) being conical, and a sealing ring (23) is provided on the mounting section (22). In a natural state, after the second annular limiting stop edge (24) is limited by the first annular limiting stop edge (101), the guide section (21) extends out from the annular cavity of the first annular limiting stop edge (101).
4. A thermal management system one-way valve according to claim 3, characterized in that: A guide groove (210) is provided on the side of the guide section (21), the guide groove (210) axially passes through both ends of the guide section (21), and the guide grooves (210) are arranged in an array in the circumferential direction of the corresponding valve cavity (10); The guide groove (210) extends axially, and the guide section (21) includes a group of ribs (211) in a circumferential array, and the groove cavity of the guide groove (210) is limited between a pair of circumferentially adjacent ribs (211).
5. The one-way valve for a thermal management system according to claim 1, characterized in that: The limiting cover (3) is connected to the inner side of the valve cavity (10) through a snap fastener, and the flow channel outlet (102) is arranged on the limiting cover (3); a locking protrusion (32) is provided on the outer wall of the limiting cover (3), and a locking groove (12) adapted to the locking protrusion (32) is provided on the valve housing (1), and through grooves (13) are provided on both sides of the locking groove (12) and pass through one end of the valve housing (1) corresponding to the flow channel outlet (102).
6. The one-way valve for a thermal management system according to claim 1, characterized in that: The limit cover (3) is integrally provided with a guide post (31) extending toward the flow channel inlet (103), the guide post (31) is concentric with the valve cavity (10), and the valve plug (2) is provided with a guide groove (20) that slides with the guide post (31).
7. The one-way valve for a thermal management system according to claim 1, characterized in that: The valve plug (2) is provided with an annular wall (25) extending toward the flow channel outlet (102), the inner wall of the annular wall (25) defines a guide groove (20), the spring (4) is sleeved on the outer side of the annular wall (25), the two ends of the spring (4) respectively abut against the valve plug (2) and the limit cover (3), and the valve plug (2) and the limit cover (3) are provided with annular grooves for accommodating the ends of the spring (4).
8. The one-way valve for a thermal management system according to claim 1, characterized in that: The valve housing (1) is provided with a radially protruding limiting portion (11) at one end near the flow channel inlet (103). The limiting portion (11) is annular, and the radial dimension of the side surface of the limiting portion (11) increases in the direction from the flow channel inlet (103) to the flow channel outlet (102) to form a conical surface.
9. The one-way valve for a thermal management system according to claim 1, characterized in that: The outer wall of the valve housing is cylindrical.
10. A two-way stop valve, characterized in that: The thermal management system comprises a pair of one-way valves as claimed in claim 1, wherein the pair of one-way valves are axially detachably connected, wherein the flow channel outlet (102) of one of the one-way valves is connected to the flow channel inlet (103) of the other one-way valve.