One-way valve and two-way stop valve of automobile thermal management system

Abstract

The utility model relates to the technical field of automobile valve manufacturing, in particular to a one-way valve and a two-way stop valve of an automobile thermal management system, which comprise a valve casing, a valve cavity arranged in the valve casing, a first annular limit retaining edge arranged in the valve cavity, a runner outlet arranged at one end of the valve cavity, and a runner inlet arranged at the other end of the valve cavity. The limiting cover is arranged at one end, corresponding to the flow channel outlet, of the valve cavity; a second annular limiting blocking edge is arranged on the periphery of the valve plug, the valve plug is movably arranged in the valve cavity and limited between the first annular limiting blocking edge and the limiting cover, the second annular limiting blocking edge is limited by the first annular limiting blocking edge in the process that the valve plug moves towards the flow channel inlet, and a sealing ring is hooped on the valve plug. The sealing ring abuts against the side, close to the first annular limiting blocking edge, of the second annular limiting blocking edge. The spring abuts against the valve plug and applies elastic force towards the inlet direction of the flow channel to the valve plug. Abnormal sound and damage caused by impact between the valve element and the valve body in the using process can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of automotive valve manufacturing technology, specifically to a one-way valve and a two-way shut-off valve for an automotive thermal management system. Background Technology

[0002] With the rapid development of new energy vehicles, energy storage systems, and other fields, the efficient operation of thermal management systems places higher demands on fluid control. As a key component in thermal management systems, the one-way valve ensures unidirectional flow of coolant or heat transfer medium, preventing backflow and thus improving system stability and efficiency. Traditional one-way valves have some problems in practical applications. Insufficient strength of the diaphragm valve core may lead to reverse deformation and leakage, while the impact between the valve core and valve body of a spool-type one-way valve may cause abnormal noise and damage. Utility Model Content

[0003] To overcome the shortcomings of the prior art, this utility model provides a one-way valve for an automotive thermal management system, which, while ensuring a sealing effect, can reduce abnormal noise and damage caused by the impact between the valve core and the valve body during use.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0005] A one-way valve for an automotive thermal management system, comprising:

[0006] The valve housing has a valve cavity inside, and a first annular limiting flange is provided inside the valve cavity. One end of the valve cavity has a flow channel outlet, and the other end of the valve cavity has a flow channel inlet.

[0007] A limiting cover is installed at one end of the outlet of the corresponding flow channel in the valve cavity;

[0008] The valve plug has a second annular limiting flange around its periphery. The valve plug is movably placed in the valve cavity and limited between the first annular limiting flange and the limiting cover. During the movement of the valve plug toward the flow channel inlet, the second annular limiting flange is limited by the first annular limiting flange. A sealing ring is provided on the valve plug, and the sealing ring abuts against the side of the second annular limiting flange near the first annular limiting flange.

[0009] A spring abuts against the valve plug and applies a spring force to the valve plug toward the flow channel inlet, so that in its natural state, the sealing ring is in close axial contact with the first annular limiting flange and the second annular limiting flange, and the flow channel in the valve cavity is closed.

[0010] Furthermore, in one of the automotive thermal management system check valves of this application, the valve cavity is axially extended and the cross-section of the valve cavity is a circle concentric with the first annular limiting flange.

[0011] Furthermore, in a one-way valve for an automotive thermal management system disclosed in this application, the valve plug is integrally formed with a second annular limiting flange. The valve plug protrudes from the second annular limiting flange towards the flow channel inlet. The valve plug includes an integrally formed guide section and an installation section. The guide section is located at one end of the installation section near the flow channel inlet and is tapered at the inlet end. A sealing ring is mounted on the installation section. In its natural state, after the second annular limiting flange is limited by the first annular limiting flange, the guide section extends out from the annular cavity of the first annular limiting flange. As a preferred embodiment of this application, the flow resistance can be reduced when the one-way valve is in the open state.

[0012] Furthermore, in a one-way valve of an automotive thermal management system in this application, a guide groove is provided on the side of the guide section, the guide groove axially penetrates both ends of the guide section, and the guide grooves are arranged in an array in the circumferential direction of the corresponding valve cavity.

[0013] Furthermore, in a one-way valve of an automotive thermal management system according to this application, the flow guide groove extends axially, and the flow guide section includes a set of circumferentially arrayed ribs, with the groove cavity confined between a pair of circumferentially adjacent ribs. This is a preferred embodiment of this application to further reduce flow resistance.

[0014] Furthermore, in a one-way valve for an automotive thermal management system disclosed in this application, the limiting cover is connected to the inside of the valve cavity via a snap-fit ​​connection, and the flow outlet is located on the limiting cover. As a preferred embodiment of this application, it has the advantages of simple connection and compact structure.

[0015] Furthermore, in a one-way valve of an automotive thermal management system disclosed in this application, a retaining protrusion is provided on the outer wall of the limiting cover, and a retaining groove is provided on the valve body to accommodate the retaining protrusion. Through slots are provided on both sides of the retaining groove, penetrating the valve body at the outlet end of the corresponding flow channel. The valve body at the retaining groove position is separated from the valve body by the through slots, allowing for elastic deformation to accommodate the retaining protrusion during installation of the limiting cover.

[0016] Furthermore, in a one-way valve for an automotive thermal management system disclosed in this application, the limiting cover is integrally provided with a guide post extending towards the flow channel inlet side, the guide post being concentric with the valve cavity, and the valve plug being provided with a guide groove that slides with the guide post. As a preferred embodiment of this application, this improves the stability of the valve plug's movement within the valve cavity.

[0017] Furthermore, in a one-way valve of an automotive thermal management system disclosed in this application, the valve plug extends towards the outlet side of the flow channel and has an annular wall. The inner wall of the annular wall defines a guide groove, and a spring is sleeved on the outer side of the annular wall. The two ends of the spring abut against the valve plug and the limiting cover, respectively. The valve plug and the limiting cover have annular grooves for receiving the ends of the spring. As a preferred embodiment of this application, the outer wall of the annular wall is used to limit the spring, and the inner wall is used to limit the guide post, which has the advantage of a compact structure.

[0018] Preferredly, in a one-way valve for an automotive thermal management system, the valve housing has a radially protruding limiting portion at one end near the flow channel inlet. The limiting portion is annular, and the radial dimension of the side of the limiting portion increases along the direction from the flow channel inlet to the flow channel outlet, forming a conical surface. As a preferred embodiment of this application, the limiting portion is used to insert into the pipe body to improve the tightness of the connection between the one-way valve and the pipe body.

[0019] Preferredly, in this application, a one-way valve for an automotive thermal management system has a cylindrical outer wall for easy connection of pipes at both ends.

[0020] A bidirectional shut-off valve includes a pair of thermal management system check valves, the pair of thermal management system check valves being axially detachably connected, wherein the flow outlet of one thermal management system check valve is connected to the flow inlet of the other thermal management system check valve.

[0021] As can be seen from the above technical solution, this utility model has the following beneficial effects:

[0022] This invention provides a one-way valve for an automotive thermal management system. When the valve body is connected to a pipeline, if fluid enters from the outlet of the flow channel, the valve chamber will close more tightly. If fluid enters from the inlet of the flow channel, the valve plug will move away from the second annular limiting flange, causing the seal to fail. The fluid then flows out from the outlet of the flow channel through the radial flow channel between the valve chamber and the second annular limiting flange. The limiting cap is used to limit the valve plug's movement towards the outlet. Therefore, a one-way flow effect is achieved, and the structure is simple, with good one-way flow resistance and high reliability. In automotive thermal management systems, it can effectively prevent the backflow of coolant. Furthermore, when the valve plug returns from the open valve chamber to the closed valve chamber, the sealing ring not only provides a seal but also acts as a buffer to mitigate the impact between the second and first annular limiting flanges, thereby reducing abnormal noise and extending service life. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a one-way valve in an automotive thermal management system according to one embodiment of this application;

[0024] Figure 2 This is an exploded view of a one-way valve in an automotive thermal management system according to one embodiment of this application;

[0025] Figure 3 This is a cross-sectional view of the internal structure of a one-way valve in an automotive thermal management system according to an embodiment of this application;

[0026] Figure 4 This is a schematic diagram of a one-way valve in an automotive thermal management system according to one embodiment of this application (the valve body is cylindrical).

[0027] Figure 5This is a schematic diagram of a bidirectional shut-off valve in one embodiment of this application.

[0028] In the figure: 1-valve housing; 10-valve cavity; 101-first annular limiting flange; 102-flow channel outlet; 103-flow channel inlet; 11-limiting part; 12-slot; 13-through groove; 2-valve plug; 20-guide groove; 21-guide section; 210-guide groove; 211-rib plate; 22-installation section; 23-sealing ring; 24-second annular limiting flange; 25-annular wall; 3-limiting cover; 31-guide post; 32-slot protrusion; 4-spring. Detailed Implementation

[0029] Example 1

[0030] Combination Figures 1 to 3 The one-way valve of the automotive thermal management system shown includes:

[0031] The valve housing 1 has a valve cavity 10 inside, and a first annular limiting flange 101 is provided inside the valve cavity 10. One end of the valve cavity 10 has a flow channel outlet 102, and the other end of the valve cavity 10 has a flow channel inlet 103.

[0032] Limiting cover 3 is provided at one end of the valve cavity 10 corresponding to the outlet 102 of the flow channel;

[0033] The valve plug 2 has a second annular limiting flange 24 around its periphery. The valve plug 2 is movably placed in the valve cavity 10 and limited between the first annular limiting flange 101 and the limiting cover 3. During the movement of the valve plug 2 toward the flow channel inlet 103, the second annular limiting flange 24 is limited by the first annular limiting flange 101. A sealing ring 23 is provided on the valve plug 2. The sealing ring 23 abuts against the side of the second annular limiting flange 24 near the first annular limiting flange 101.

[0034] Spring 4 abuts against valve plug 2 and applies elastic force to valve plug 2 in the direction of flow channel inlet 103, so that in the natural state, sealing ring 23 is in close contact with first annular limiting flange 101 and second annular limiting flange 24 in the axial direction, and the flow channel in valve cavity 10 is closed.

[0035] Based on the above structure, the principle of the one-way valve in the automotive thermal management system is as follows:

[0036] After the valve housing 1 is connected to the pipeline, if the liquid flow enters from the flow channel outlet 102, it will cause the valve chamber 10 to close more tightly; if the liquid flow enters from the flow channel inlet 103, it will cause the valve plug 2 to move away from the second annular limiting flange 24, causing the seal to fail, and the liquid flow will flow out from the flow channel outlet 102 through the flow channel between the valve chamber 10 and the second annular limiting flange 24 in the radial direction. The limiting cap 3 is used to limit the valve plug 2 in the outlet direction. Therefore, a unidirectional conduction effect is achieved, and the structure is simple, with good unidirectional flow resistance and high reliability. In the automotive thermal management system, it can effectively prevent the reverse flow of coolant. In addition, when the valve plug 2 returns from the open valve chamber 10 to the closed valve chamber 10, the sealing ring 23 not only plays a sealing role, but also acts as a buffer to reduce the impact between the second annular limiting flange 24 and the first annular limiting flange 101, so as to reduce abnormal noise and improve service life.

[0037] 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 flange 101.

[0038] In this embodiment, the valve plug 2 is integrally formed with the second annular limiting flange 24. The valve plug 2 protrudes from the second annular limiting flange 24 towards the flow channel inlet 103. The valve plug 2 includes an integrally formed guide section 21 and an installation section 22. The guide section 21 is located at one end of the installation section 22 near the flow channel inlet 103 and is tapered. A sealing ring 23 is clamped onto the installation section 22. In its natural state, after the second annular limiting flange 24 is limited by the first annular limiting flange 101, the guide section 21 extends out from the annular cavity of the first annular limiting flange 101. This reduces the flow resistance when the check valve is in the open state.

[0039] In this embodiment, the side of the guide section 21 is provided with a guide groove 210, which axially penetrates both ends of the guide section 21 and is arranged in an array in the circumferential direction of the corresponding valve cavity 10.

[0040] In this embodiment, the flow guide groove 210 extends axially, and the flow guide section 21 includes a set of circumferentially arrayed stiffeners 211. The cavity of the flow guide groove 210 is confined between a pair of circumferentially adjacent stiffeners 211 to further reduce flow resistance.

[0041] In this embodiment, the limiting cover 3 is connected to the inside of the valve cavity 10 by a snap fastener, and the flow channel outlet 102 is disposed on the limiting cover 3. It has the advantages of simple connection and compact structure. Specifically, in this embodiment, the outer wall of the limiting cover 3 is provided with a snap protrusion 32, and the valve shell 1 is provided with a snap groove 12 that adapts to the snap protrusion 32. The snap groove 12 is provided on both sides with through grooves 13 that penetrate the valve shell 1 at the end corresponding to the flow channel outlet 102.

[0042] In this embodiment, the limiting 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. This can improve the stability of the valve plug 2 in the valve cavity 10.

[0043] In this embodiment, the valve plug 2 extends towards the flow channel outlet 102 and is provided with an annular wall 25. 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, and its two ends abut against the valve plug 2 and the limiting cover 3, respectively. The valve plug 2 and the limiting cover 3 are provided with annular grooves to accommodate the ends of the spring 4. The outer wall of the annular wall 25 is used to limit the spring 4, and the inner wall is used to limit the guide post 31, which has the advantage of compact structure.

[0044] In this embodiment, the valve housing 1 has a radially protruding limiting part 11 at one end near the flow channel inlet 103. The limiting part 11 is annular, and the radial dimension of the side of the limiting part 11 increases along the direction from the flow channel inlet 103 to the flow channel outlet 102, forming a conical surface. The limiting part 11 is used to improve the tightness of the connection between the one-way valve and the pipe body when inserted into the pipe. Figure 4 As shown, in other embodiments, the outer wall of the valve housing 1 is cylindrical to facilitate the connection of pipelines at both ends.

[0045] Example 2

[0046] like Figure 5 As shown, this embodiment provides a bidirectional shut-off valve, including a pair of thermal management system check valves as described in Embodiment 1. The pair of thermal management system check valves are axially detachably connected, and the flow channel outlet 102 of one thermal management system check valve is connected to the flow channel inlet 103 of the other thermal management system check valve.

[0047] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on the explanation herein, those skilled in the art can conceive of other specific embodiments of this utility model without creative effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A one-way valve for an automotive thermal management system, characterized in that, include: A valve housing (1) is provided inside the valve housing (1), and a first annular limiting flange (101) is provided inside the valve cavity (10). One end of the valve cavity (10) is provided with a flow channel outlet (102), and the other end of the valve cavity (10) is provided with a flow channel inlet (103). Limiting cover (3) is provided at one end of the valve cavity (10) corresponding to the outlet (102) of the flow channel; A valve plug (2) is provided with a second annular limiting flange (24) around its periphery. The valve plug (2) is movably placed in the valve cavity (10) and limited between the first annular limiting flange (101) and the limiting cover (3). During the movement of the valve plug (2) toward the flow channel inlet (103), the second annular limiting flange (24) is limited by the first annular limiting flange (101). A sealing ring (23) is provided on the valve plug (2). The sealing ring (23) abuts against the side of the second annular limiting flange (24) near the first annular limiting flange (101). Spring (4) abuts against valve plug (2) and applies elastic force toward flow channel inlet (103) to valve plug (2) so that in the natural state, sealing ring (23) is in close contact with first annular limiting flange (101) and second annular limiting flange (24) in the axial direction, and the flow channel in valve cavity (10) is closed.

2. The one-way valve for an automotive thermal management system according to claim 1, characterized in that: 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 flange (101).

3. The one-way valve for an automotive thermal management system according to claim 1, characterized in that: The valve plug (2) is integrally formed with the second annular limiting flange (24). The valve plug (2) protrudes from the second annular limiting flange (24) toward the flow channel inlet (103). The valve plug (2) includes an integrally formed guide section (21) and an installation section (22). The guide section (21) is located at one end of the installation section (22) near the flow channel inlet (103). The end of the guide section (21) near the flow channel inlet (103) is conical. The sealing ring (23) is clamped on the installation section (22). In the natural state, after the second annular limiting flange (24) is limited by the first annular limiting flange (101), the guide section (21) extends out from the annular cavity of the first annular limiting flange (101).

4. The one-way valve for an automotive thermal management system according to claim 3, characterized in that: The side of the guide section (21) is provided with a guide groove (210), the guide groove (210) axially penetrates 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 chamber (10); The flow channel (210) extends axially, and the flow section (21) includes a set of circumferentially arrayed stiffeners (211). The cavity of the flow channel (210) is confined between a pair of circumferentially adjacent stiffeners (211).

5. A one-way valve for an automotive thermal management system according to claim 1, characterized in that: The limiting cover (3) is connected to the inside of the valve cavity (10) by a snap fastener, and the flow channel outlet (102) is set on the limiting cover (3); the outer wall of the limiting cover (3) is provided with a snap protrusion (32), and the valve shell (1) is provided with a snap groove (12) that is adapted to the snap protrusion (32). The two sides of the snap groove (12) are provided with through grooves (13) that penetrate the valve shell (1) to the end corresponding to the flow channel outlet (102).

6. A one-way valve for an automotive thermal management system according to claim 1, characterized in that: The limiting 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). The valve plug (2) is provided with a guide groove (20) that slides with the guide post (31).

7. A one-way valve for an automotive thermal management system according to claim 1, characterized in that: The valve plug (2) extends toward the flow channel outlet (102) and is provided with an annular wall (25). 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) abut against the valve plug (2) and the limiting cover (3) respectively. The valve plug (2) and the limiting cover (3) are provided with annular grooves to accommodate the ends of the spring (4).

8. A one-way valve for an automotive thermal management system according to claim 1, characterized in that: The valve housing (1) has a radially protruding limiting part (11) at one end near the flow channel inlet (103). The limiting part (11) is annular, and the radial dimension of the side of the limiting part (11) increases along the direction from the flow channel inlet (103) to the flow channel outlet (102) to form a conical surface.

9. A one-way valve for an automotive thermal management system according to claim 1, characterized in that: The outer wall of the valve body is cylindrical.

10. A bidirectional shut-off valve, characterized in that: Includes a pair of thermal management system check valves as described in claim 1, the pair of thermal management system check valves being axially detachably connected, wherein the flow outlet (102) of one thermal management system check valve is connected to the flow inlet (103) of the other thermal management system check valve.

Images