One-way valve

Abstract

The one-way valve comprises a valve body and a spring, the valve body comprises a circulation hole and a guide part, the guide part is provided with a containing cavity, at least part of the spring is located in the containing cavity, the containing cavity is sunken in the end face of the guide part, and when fluid passes through the one-way valve, impurities in the fluid are prone to being accumulated in the sunken containing cavity; the spring may be affected by impurity accumulation, the guide part is provided with at least one channel, the channel is communicated with the containing cavity and the circulation hole, impurities in the containing cavity can be discharged into the circulation hole from the channel, and accumulation of the impurities in the valve body can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of thermal management, in particular to a one-way valve for vehicles. BACKGROUND

[0002] In the related art, one-way valves are mostly used for one-way flow of medium. Since impurities exist in the medium, when the medium passes through the one-way valve, the impurities are easy to accumulate in the valve body, and there is a risk of failure of the one-way valve. CONTENT OF THE UTILITY MODEL

[0003] An object of the present application is to provide a one-way valve which is beneficial to reduce the accumulation of impurities in the valve body.

[0004] To achieve the above object, the present application adopts the following technical scheme: a one-way valve, comprising a valve body and a spring, the valve body having a flow-through hole, the valve body comprising a guide portion, the guide portion having a containing cavity, along the axial direction of the one-way valve, the containing cavity being recessed from an end face of the guide portion, the spring being at least partially located in the containing cavity, the guide portion having at least one passage, the passage communicating the containing cavity and the flow-through hole.

[0005] In the technical scheme of the present application, the one-way valve comprises a valve body and a spring, the valve body comprising a flow-through hole and a guide portion, the guide portion having a containing cavity, the containing cavity being recessed from an end face of the guide portion, at least part of the spring being located in the containing cavity, the guide portion having at least one passage, the passage communicating the containing cavity and the flow-through hole, the impurities in the containing cavity can be discharged into the flow-through hole from the passage, which is beneficial to reduce the accumulation of impurities in the valve body. BRIEF DESCRIPTION OF DRAWINGS

[0006] Figure 1 A perspective structural schematic view of one embodiment of the one-way valve is shown;

[0007] Figure 2 A structural schematic view of one embodiment of the one-way valve is shown Figure 1 A structural schematic view of one embodiment of the one-way valve is shown

[0008] Figure 3 A structural schematic view of one embodiment of the one-way valve is shown Figure 2 A sectional structural schematic view of one embodiment of the one-way valve along the line A-A is shown;

[0009] Figure 4 A sectional structural schematic view of one embodiment of the one-way valve along the line A-A is shown; Figure 3 An enlarged view of a part of the one-way valve is shown;

[0010] Figure 5 A perspective structural schematic view of one embodiment of the valve body is shown; Figure 1 A perspective structural schematic view of one embodiment of the valve body is shown;

[0011] Figure 6 A perspective structural schematic view of one embodiment of the valve body is shown; Figure 5A schematic diagram of one embodiment of the valve body shown at an angle;

[0012] Figure 7 It shows Figure 6 The diagram shows a cross-sectional view of the valve body along line DD.

[0013] Figure 8 It shows Figure 7 A partial enlarged view of the valve body shown;

[0014] Figure 9 It shows Figure 6 The diagram shows a cross-sectional view of the valve body along line EE.

[0015] 100. Check valve; 300. Flow channel plate; 1. Valve body; 2. Spring; 3. Valve core; 4. Valve stem; 5. Retaining ring; 11. Guide part; 12. Flow hole; 13. Connecting part; 14. Outer ring part; 21. Ring part; 211. Outer side wall; 212. Inner side wall; 111. Receiving cavity; 112. Channel; 113. Sliding part; 1111. Bottom wall part; 1112. Side wall part; 1131. Guide hole; 115. First opening; 114. Second opening; 116. Third opening; 117. End face. Detailed Implementation

[0016] The embodiments are described in detail below with reference to the accompanying drawings.

[0017] To make the objectives, technical solutions, and advantages of this application clearer, the application will be described in further detail below with reference to the accompanying drawings and specific embodiments. In this document, relational terms such as "first" and "second" are used merely to distinguish one component from another that has the same name, and do not necessarily require or imply any such actual relationship or order between these components.

[0018] like Figure 2 As shown, the one-way valve 100 includes a valve body 1 and a spring 2. The valve body 1 has a flow hole 12. The one-way valve 100 is embedded in the flow channel plate 300. The valve body 1 is connected to the flow channel plate 300. The flow hole 12 has openings at both ends of the valve body 1, that is, the flow hole 12 penetrates the valve body 1. Fluid enters from the opening on one side of the valve body 1, passes through the flow hole 12, and flows out from the opening on the other side of the valve body 1. The one-way valve 100 controls the flow direction of the fluid by opening and closing the flow hole 12. It should be noted that the axial direction of the one-way valve 100 is the direction of fluid flow.

[0019] like Figure 1As shown, the valve body 1 also includes a guide portion 11, which has a receiving cavity 111. Along the axial direction of the one-way valve 100, the receiving cavity 111 is recessed in the end face 117 of the guide portion 11. The spring 2 is at least partially located in the receiving cavity 111. The receiving cavity 111 recessed in the guide portion 11 provides space for the spring 2, reducing the risk of the spring 2 shifting during movement. The guide portion 11 has at least one channel 112, which connects the receiving cavity 111 and the flow hole 12. The channel 112 is located in the receiving cavity 111 and communicates with the flow hole 12, allowing impurities accumulated in the receiving cavity 111 to be discharged into the flow hole 12. The impurities will then be carried away from the valve body 1 along with the fluid passing through the flow hole 12. Figures 3-4 As shown, in one embodiment of this application, the cavity 111 includes a bottom wall portion 1111 and a side wall portion 1112. The bottom wall portion 1111 abuts against one end of the spring 2, and the side wall portion 1112 is connected to the bottom wall portion 1111. The side wall portion 1112 has a channel 112, such as... Figure 8 As shown, the channel 112 has a first opening 115 in the side wall portion 1112 that connects the receiving cavity 111 and the flow hole 12. After the fluid enters the receiving cavity 111, it can pass through the channel 112 on the side wall portion 1112 and then flow out of the receiving cavity. The side wall portion 1112 is located on the radial outer side of the spring 2 and will not interfere with the normal movement of the spring.

[0020] like Figures 3-4 As shown, the guide portion 11 has at least two channels 112, and the wall of the channel 112 is connected to the bottom wall portion 1111 to prevent impurities from accumulating at the bottom if the channel 112 does not reach the bottom of the receiving cavity 111. The minimum width of the channel 112 is greater than 1000μm so that larger particulate impurities can also flow out. Preferably, the minimum width is along the circumferential width of the one-way valve 100. The longer the axial length, the better the impurity removal effect in the receiving groove 111.

[0021] like Figure 8 As shown, the receiving cavity 111 has a second opening 114 on the end face 117. The second opening 114 is located on the end face 117 to facilitate machining of the receiving cavity 111.

[0022] like Figures 3-9 As shown, the channels 112 are spaced apart circumferentially along the receiving cavity 111. The circumferentially spaced arrangement of multiple channels 112 allows for more uniform and thorough discharge of impurities. Each channel 112 has a third opening 116 on the axial end face 117 of the guide portion 11, facilitating machining during processing. Other feasible technical solutions exist for the arrangement of the channels 112. For example, the channels 112 are spaced apart circumferentially along the receiving cavity 111; in another technical solution, the channels 112 are spaced apart axially along the axial direction of the one-way valve 100.

[0023] like Figures 1-4 As shown, in another technical solution of this application, the one-way valve 100 includes a valve stem 4, and a spring 2 is sleeved on the outside of the valve stem 4 to prevent the spring 2 from shifting during movement. The guide part 11 includes a sliding part 113, which has a guide hole 1131 that communicates with the receiving cavity 111. The valve stem 4 is at least partially located in the guide hole 1131, and the valve stem 4 slides in cooperation with the guide hole 1131. The guide hole 1131 can guide the reciprocating movement of the valve stem 4, reducing the risk of the valve core 3 becoming misaligned due to the movement of the valve stem 4.

[0024] like Figure 4 As shown, the valve stem 4 is cylindrical, and the shape of the valve stem 4 is complementary to that of the guide hole 1131. The inner wall of the guide hole 1131 is cylindrical, and a clearance fit is formed between the valve stem 4 and the guide hole 1131 to avoid the taper design between the two, thereby reducing the risk of impurities accumulating between them. The maximum value of the gap between the valve stem 4 and the hole wall forming the guide hole 1131 is less than or equal to 100μm, reducing the risk of larger impurities entering the gap between the valve stem 4 and the guide hole 1131, thereby causing the valve stem 4 to move stuck or even jam.

[0025] like Figure 4 As shown, the spring 2 includes an outer side wall 211 and an inner side wall 212. The circumferential outer side wall 211 of the spring 2 at least partially faces the side wall portion 1112, and the inner side wall 211 of the spring 2 at least partially faces the circumferential outer side wall of the valve stem 4. The wall forming the receiving cavity 111 includes the side wall portion 1112. The minimum clearance distance between the side wall portion 1112 and the outer side wall 211 of the spring 2 is greater than 0.05 mm, and / or the minimum clearance distance between the circumferential outer side wall 211 of the valve stem 4 and the inner side wall 212 of the spring 2 is greater than 0.05 mm, which can reduce the risk of the spring 2 getting stuck during movement.

[0026] like Figures 5-6 As shown, the valve body includes an outer ring portion 14 and a connecting portion 13. The outer ring portion 14 surrounds the guide portion 11, and the inner circumferential surface of the outer ring portion 14 and the guide portion 11 define a flow hole 12. The connecting portion 12 is spaced circumferentially along the guide portion 11, and one end face of the connecting portion 12 facing the spring 2 is located on the same plane as the end face 117 of the guide portion 11. The outer ring portion 14 can be connected to external components, so that the one-way valve 100 is installed in the flow channel plate 300. The connecting portion 13 connects the guide portion 11 and the outer ring portion 14. The flow hole is spaced circumferentially along the guide portion 11, and one axial end face of the connecting portion 13 is adjacent to and coplanar with the end face 117 of the guide portion 11. This valve body 1 structure ensures a large flow hole area 12 and has strong structural strength, which can reduce the risk of the valve body 1 being crushed by fluid impact in the flow channel.

[0027] like Figures 1-3As shown, in another technical solution of the application, the one-way valve 100 includes a valve core 3 connected with a valve rod 4, a spring 2 is sleeved on the valve rod 4, one side of the spring 2 is a valve body 1, the other side is a check ring 5, the valve core 3 is away from the spring 2 relative to the valve body 1, and the valve core 3 abuts against the valve body 1. The overall volume of the structure of the one-way valve 100 is relatively small, fluid flows into the impact valve core 3 from the flow hole 12, drives the spring 2 to compress, the valve core 3 is away from the valve body 1, and the fluid realizes forward conduction. When there is no fluid flow or the fluid flows reversely, the spring 2 provides a valve closing force, so that the valve core 3 abuts against the valve body 1, and the reverse flow of the fluid is avoided. However, the inventor found in the design and research process that when the fluid impacts the valve core 3, the force is relatively large, and then the check ring 5 and the spring 2 of the valve rod 4 will have a relatively large pressure on the valve body 1, the force point is at the connection between the guide part 11 and the flow hole 12, there is a relatively large stress concentration here, and there is a risk of crushing. The present solution designs an accommodating cavity 111 recessed in the end face 117 of the valve body 1, so that the check ring 5 abuts against the guide part 11 when the valve core 3 is in an open state, and the spring 2 acts on the bottom wall part 1111 of the accommodating cavity 111. This not only can accommodate the spring 2, but also can increase the stress surface of the valve body 1, share the force of the spring 2 and the check ring 5 on the valve body 1, and reduce the risk of crushing of the valve body 1 due to stress concentration in the open valve state.

[0028] However, the inventor found in the research process that although this structure can reduce the risk of crushing of the valve body 1, since the second opening 114 of the accommodating cavity 111 faces the direction of fluid inflow, impurities are easy to accumulate in the accommodating cavity 111 when the fluid passes through the one-way valve 100, and there is a risk of jamming the spring 2. Therefore, the present solution designs a channel 112 communicating the accommodating cavity 111 and the flow hole 12, so that the impurities in the accommodating cavity 111 can be discharged into the flow hole 12, and the flow rate of the fluid flowing into the flow hole 12 from the channel 112 when the fluid enters the accommodating cavity 111 will increase, which can play a flushing role and further flush the impurities in the accommodating cavity 111, thereby reducing the accumulation of impurities.

[0029] It should be noted that the above examples are only used to illustrate the technical solutions described in the application and not to limit the application. Although the application has been described in detail with reference to the above examples, those skilled in the art should understand that the skilled in the art can still modify or equivalently replace the application, and all technical solutions and improvements that do not deviate from the spirit and scope of the application should be covered within the scope of the claims of the application.

Claims

1. A one-way valve comprising a valve body (1) and a spring (2), characterized in that, The valve body (1) has a flow-through hole (12), the valve body (1) comprises a guide portion (11), the guide portion (11) has a containing cavity (111), the containing cavity (111) is recessed on an end face (117) of the guide portion (11) along an axial direction of the one-way valve, the spring (2) is at least partially located in the containing cavity (111), the guide portion (11) has at least one channel (112) communicating the containing cavity (111) and the flow-through hole (12).

2. The one-way valve of claim 1, wherein The wall forming the containing cavity (111) comprises a bottom wall portion (1111) and a side wall portion (1112), the bottom wall portion (1111) abuts against one end of the spring (2), the side wall portion (1112) is connected with the bottom wall portion (1111), the side wall portion (1112) has the channel (112), the channel (112) has a first opening (115) communicating the containing cavity (111) and the flow-through hole (12) on the side wall portion (1112), and the side wall portion (1112) is located radially outside the spring (2).

3. The one-way valve of claim 2, wherein, The minimum width of the channel (112) is greater than 1000 μm.

4. The one-way valve according to any one of claims 1 to 3, characterized in that The guide portion (11) has at least two channels (112), and each channel (112) is circumferentially spaced apart along the containing cavity (111). Alternatively, each channel (112) is spaced apart along the axial direction of the one-way valve.

5. The one-way valve of claim 4, wherein, The containing cavity (111) has a second opening (114) on the end face (117), and at least one channel (112) has a third opening (116) on the end face (117) of the guide portion (11).

6. The one-way valve according to any one of claims 1-3 or 5, wherein The one-way valve comprises a valve stem (4), the spring (2) is sleeved on the outer side of the valve stem (4), the guide portion (11) comprises a sliding portion (113), the sliding portion (113) has a guide hole (1131) communicating with the containing cavity (111), the valve stem (4) is at least partially located in the guide hole (1131), and the valve stem (4) is in sliding fit with the wall forming the guide hole (1131).

7. The one-way valve of claim 4, wherein, The one-way valve comprises a valve stem (4), the spring (2) is sleeved on the outer side of the valve stem (4), the guide portion (11) comprises a sliding portion (113), the sliding portion (113) has a guide hole (1131) communicating with the containing cavity (111), the valve stem (4) is at least partially located in the guide hole (1131), and the valve stem (4) is in sliding fit with the wall forming the guide hole (1131).

8. The one-way valve of claim 6, wherein, The valve stem (4) is columnar, the inner wall forming the guide hole (1131) is columnar, and the maximum gap between the valve stem (4) and the hole wall forming the guide hole (1131) is less than or equal to 100 μm.

9. The one-way valve of claim 7, wherein, The valve stem (4) is columnar, the inner wall forming the guide hole (1131) is cylindrical, and the maximum gap between the valve stem (4) and the hole wall forming the guide hole (1131) is less than or equal to 100 mu m.

10. The one-way valve of claim 6, wherein, The spring (2) includes an outer sidewall (211) and an inner sidewall (212), the wall forming the accommodating cavity (111) includes a sidewall portion (1112), the minimum gap distance between the sidewall portion (1112) and the outer sidewall (211) of the spring (2) is greater than or equal to 0.05 mm, and / or the minimum gap distance between the circumferential outer sidewall (211) of the valve stem (4) and the inner sidewall (212) of the spring (2) is greater than or equal to 0.05 mm.

11. The one-way valve of claim 7, wherein, The spring (2) includes an outer sidewall (211) and an inner sidewall (212), the wall forming the accommodating cavity (111) includes a sidewall portion (1112), the minimum gap distance between the sidewall portion (1112) and the outer sidewall (211) of the spring (2) is greater than or equal to 0.05 mm, and / or the minimum gap distance between the circumferential outer sidewall (211) of the valve stem (4) and the inner sidewall (212) of the spring (2) is greater than or equal to 0.05 mm.

12. The one-way valve of claim 6, wherein, The valve body includes an outer ring portion (14) and a connecting portion (13), the outer ring portion (14) surrounds the guide portion (11), and the inner circumferential surface of the outer ring portion (14) and the guide portion (11) define the flow-through hole (12); the connecting portion (13) is arranged along the circumference of the guide portion (11) and is spaced apart, and the end surface of the connecting portion (13) facing the spring (2) is located in the same plane as the end surface (117) of the guide portion (11).

13. The one-way valve of claim 7, wherein, The valve body includes an outer ring portion (14) and a connecting portion (13), the outer ring portion (14) surrounds the guide portion (11), and the inner circumferential surface of the outer ring portion (14) and the guide portion (11) define the flow-through hole (12); the connecting portion (13) is arranged along the circumference of the guide portion (11) and is spaced apart, and the end surface of the connecting portion (13) facing the spring (2) is located in the same plane as the end surface (117) of the guide portion (11).

14. The check valve according to any one of claims 1-3 or 5 or 7, wherein The one-way valve (100) includes a valve core (3), the valve core (3) is connected with a valve stem (4), the valve core (3) is away from the spring (2) relative to the valve body (1), and the valve core (3) abuts against the valve body (1).

15. The one-way valve of claim 4, wherein, The one-way valve (100) includes a valve core (3), the valve core (3) is connected with a valve stem (4), the valve core (3) is away from the spring (2) relative to the valve body (1), and the valve core (3) abuts against the valve body (1).

16. The one-way valve of claim 6, wherein, The one-way valve (100) includes a valve core (3), the valve core (3) is connected with a valve stem (4), the valve core (3) is away from the spring (2) relative to the valve body (1), and the valve core (3) abuts against the valve body (1).

17. The one-way valve of claim 8 or 9, wherein, The one-way valve (100) comprises a valve core (3), the valve core (3) is connected with a valve rod (4), the valve core (3) is away from the spring (2) relative to the valve body (1), and the valve core (3) is in abutment with the valve body (1).

18. The one-way valve of claim 10 or 11, wherein, The one-way valve (100) comprises a valve core (3), the valve core (3) is connected with a valve rod (4), the valve core (3) is away from the spring (2) relative to the valve body (1), and the valve core (3) is in abutment with the valve body (1).

19. The one-way valve of claim 12 or 13, wherein, The one-way valve (100) comprises a valve core (3), the valve core (3) is connected with a valve rod (4), the valve core (3) is away from the spring (2) relative to the valve body (1), and the valve core (3) is in abutment with the valve body (1).

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