One-way valve, refrigerating system and vehicle

Abstract

The utility model discloses a one-way valve, a refrigerating system and a vehicle, and the one-way valve comprises a fixed plug, a valve core, a valve rod and a valve rod, the valve element is arranged on the fixing plug, and the valve element is provided with a closing position for closing the valve port and an opening position for opening the valve port; the first sealing ring is arranged on the peripheral wall of the valve element, and at the closing position, the valve element is in sealing connection with the valve port through the first sealing ring; the elastic piece is elastically connected with the valve element and the fixing plug so that the valve element can tend to be kept at the closing position; at the closing position, the valve element abuts against the conical surface portion so as to limit the deformation quantity of the first sealing ring. According to the technical scheme, the technical problem that a sealing ring in an existing one-way valve is prone to fatigue damage is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid control, in particular to a one-way valve, a refrigeration system and a vehicle. Background Art

[0002] In the existing one-way valve structure, an elastic sealing ring is generally required to seal between the valve core and the valve seat to prevent reverse seepage. During the use of the one-way valve, the sealing ring is easily over-pressurized and causes fatigue damage, which affects the service life of the one-way valve. Utility Model Content

[0003] The main purpose of the utility model is to provide a one-way valve, a refrigeration system and a vehicle, aiming to solve the technical problem that the sealing ring in the existing one-way valve is prone to fatigue damage.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a one-way valve, comprising:

[0005] A fixed plug having a valve port, wherein the valve port has a conical surface portion;

[0006] A valve core is arranged on the fixed plug, and the valve core has a closed position for closing the valve port and an open position for opening the valve port;

[0007] A first sealing ring, arranged on the outer peripheral wall of the valve core, wherein in the closed position, the valve core and the valve port are sealed and connected via the first sealing ring;

[0008] an elastic member, elastically connecting the valve core and the fixed plug so that the valve core has a tendency to remain in the closed position;

[0009] Wherein, in the closed position, the valve core abuts against the conical surface portion to limit the deformation amount of the first sealing ring.

[0010] Optionally, the outer peripheral wall of the valve core is provided with a sealing portion and an avoidance portion, the first sealing ring is arranged between the sealing portion and the avoidance portion, and in the closed position, the sealing portion is in surface contact with the conical surface portion, the avoidance portion is gap matched with the conical surface portion, and the side of the valve core facing the fixed plug is gap matched with the fixed plug.

[0011] Optionally, the fixing plug is provided with a guide hole, and the valve core comprises:

[0012] A piston shaft is slidably disposed in the guide hole, and the elastic member elastically connects the piston shaft and the fixing plug;

[0013] The piston ring is inserted into one end of the piston shaft to open or close the valve port under the drive of the piston shaft, and the first sealing ring is arranged on the piston ring.

[0014] Optionally, the valve core further comprises a limiter, the limiter is protrudingly provided at one end of the piston shaft away from the piston ring, and the limiter is used for abutting and limiting the elastic member.

[0015] Optionally, the fixing plug comprises:

[0016] An inner ring portion, slidably matched with the valve core;

[0017] An outer ring portion is arranged around the inner ring portion, and the outer ring portion and the inner ring portion together form the valve port and a flow passage communicating with the valve port;

[0018] A connecting portion connects the inner ring portion and the outer ring portion.

[0019] Optionally, a plurality of the connecting portions are provided, and the plurality of connecting portions are spaced apart along the circumference of the inner ring portion.

[0020] Optionally, the fixing plug further comprises a guide portion, the guide portion is protrudingly arranged on a side of the inner ring portion away from the valve port, and the elastic member is sleeved on an outer periphery of the guide portion.

[0021] Optionally, an outer side wall of the valve core is provided with a first sealing groove, and the first sealing ring is provided in the first sealing groove.

[0022] Optionally, the outer side wall of the fixing plug is provided with a second sealing groove, and the one-way valve further includes a second sealing ring, which is provided in the second sealing groove and is used for sealingly cooperating with the inner wall of the pipeline.

[0023] The utility model also provides a refrigeration system, comprising the one-way valve mentioned above.

[0024] The utility model also provides a vehicle, comprising the above-mentioned refrigeration system.

[0025] Compared with the prior art, in the technical solution of the utility model, the one-way valve includes a fixed plug, a valve port for fluid to pass through is arranged on the fixed plug, a conical surface portion is arranged at the valve port, a valve core is also slidably arranged on the fixed plug, the valve core slides between an open position for opening the valve port and a closed position for closing the valve port, a first sealing ring is arranged on the outer peripheral wall of the valve core, when in the closed position, the valve core and the valve port jointly squeeze the first sealing ring to achieve sealing of the valve port, in addition, the one-way valve also includes an elastic member, the elastic member elastically connects the valve core and the fixed plug, so that the valve core has a movement tendency to close the valve port, so that the one-way valve can be in a normally closed state when not subjected to external pressure; in addition, in the present solution, the valve core abuts against the conical surface portion to limit the position when in the closed position, preventing the valve core from continuing to enter the valve port and causing the first sealing ring to continue to be compressed, so that the deformation of the first sealing ring is not too large each time the valve port is opened and closed, thereby alleviating fatigue damage of the sealing ring caused by overpressure, which is conducive to extending the service life of the one-way valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0027] Figure 1 It is a structural schematic diagram of a one-way valve of the utility model;

[0028] Figure 2 It is a structural schematic diagram of a fixed plug in the one-way valve of the utility model;

[0029] Figure 3 It is another structural schematic diagram of the fixed plug in the one-way valve of the utility model;

[0030] Figure 4 It is a structural schematic diagram of a piston ring in a one-way valve of the utility model;

[0031] Figure 5 It is a structural schematic diagram of the piston shaft in the one-way valve of the utility model.

[0032] Description of Figure Numbers:

[0033]

[0034] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0039] In the existing one-way valve structure, the valve core 200 and the valve seat are generally sealed with an elastic sealing ring. When the one-way valve is closed, the valve core 200 and the valve seat cooperate to press the sealing ring to seal the valve port 110 on the valve seat. The sealing ring is prone to excessive compression, resulting in fatigue damage to the sealing ring.

[0040] In order to solve the above technical problems, the present technical solution proposes a one-way valve, comprising:

[0041] The fixed plug 100 has a valve port 110, and the valve port 110 has a conical portion 120;

[0042] The valve core 200 is disposed on the fixed plug 100, and the valve core 200 has a closed position for closing the valve port 110 and an open position for opening the valve port 110;

[0043] The first sealing ring 300 is provided on the outer peripheral wall of the valve core 200. In the closed position, the valve core 200 and the valve port 110 are sealed and connected via the first sealing ring 300.

[0044] An elastic member 400 elastically connects the valve core 200 and the fixed plug 100 so that the valve core 200 has a tendency to remain in a closed position;

[0045] In the closed position, the valve core 200 abuts against the conical surface portion 120 to limit the deformation of the first sealing ring 300 .

[0046] Compared with the prior art, in the technical solution of the utility model, the one-way valve includes a fixed plug 100, the fixed plug 100 is provided with a valve port 110 for fluid to pass through, the valve port 110 is provided with a conical surface 120, the fixed plug 100 is also slidably provided with a valve core 200, the valve core 200 slides between an open position for opening the valve port 110 and a closed position for closing the valve port 110, the outer peripheral wall of the valve core 200 is provided with a first sealing ring 300, when in the closed position, the valve core 200 and the valve port 110 jointly squeeze the first sealing ring 300 to achieve the sealing of the valve port 110, in addition, the one-way valve also includes The elastic member 400 elastically connects the valve core 200 and the fixed plug 100, so that the valve core 200 has a movement tendency to close the valve port 110, so that the one-way valve can be in a normally closed state when not subject to external pressure; in addition, in the present embodiment, the valve core 200 abuts against the conical surface portion 120 to limit the position when in the closed position, preventing the valve core 200 from continuing to enter the valve port 110 and causing the first sealing ring 300 to continue to be compressed, so as to ensure that the deformation of the first sealing ring 300 is not too large each time the valve port 110 is opened and closed, thereby alleviating fatigue damage of the sealing ring caused by overpressure, which is beneficial to extending the service life of the one-way valve.

[0047] Specifically, Figure 1~Figure 5In this embodiment, the one-way valve can be applied to the pipeline of an air-conditioning system or other fluid control system to prevent reverse penetration of the fluid. The one-way valve includes a fixed plug 100, which can be embedded in the pipeline. The outer peripheral shape and size of the fixed plug 100 can be adapted to the inner wall of the pipeline. In this solution, the fixed plug 100 has a cylindrical shape, and a valve port 110 extending along its axial direction is provided on the fixed plug 100. The valve port 110 passes through the opposite ends of the fixed plug 100 along its own axial direction. The valve port 110 is used for allowing the fluid to pass through when the one-way valve is installed in the pipeline. The valve port 110 is provided with a conical surface portion 120 at the periphery thereof, and the conical surface portion 120 is in a trumpet shape; in addition, the one-way valve further comprises a valve core 200, one end of which can be movably inserted into the valve port 110, and forms a sliding connection with the fixed plug 100, and the valve core 200 can close or open the valve port 110 by sliding, when the valve port 110 is closed, the valve core 200 is in a closed position, and when the valve port 110 is opened, the valve core 200 is in an open position; in addition, the outer peripheral wall of the valve core 200 is provided with a first sealing ring 300, when the valve core 200 is in a closed position When in the closed position, the valve core 200 cooperates with the conical surface portion 120 to clamp the first sealing ring 300. At this time, the first sealing ring 300 is elastically compressed to fill the gap between the outer peripheral edge of the valve core 200 and the conical surface portion 120, thereby closing the valve port 110. In addition, in the above-mentioned closed position, when the first sealing ring 300 is in the compression process, the end of the valve core 200 facing the valve port 110 will approach and finally abut against the conical surface portion 120. At this time, the conical surface portion 120 will limit the valve core 200, so that the valve core 200 cannot continue to slide, and the first sealing ring 300 will not continue to be compressed, which is equivalent to The deformation of the first sealing ring 300 each time the one-way valve is opened and closed is limited, which effectively prevents the occurrence of over-pressure in the first sealing ring 300, and is beneficial to extending the service life of the first sealing ring 300; in addition, in order to realize the one-way conduction function of the one-way valve, the one-way valve also includes an elastic member 400, which can be a compression spring structure, one end of the elastic member 400 is connected to the valve core 200, and the other end of the elastic member 400 is connected to the fixing plug 100, and the elastic member 400 can provide the valve core 200 with an elastic force to block the valve port 110, so that the valve port 110 is in a normally closed state.

[0048] Furthermore, the valve core 200 is provided with a sealing portion 240, and in the closed position, the sealing portion 240 is in surface contact with the conical surface portion 120. Figure 4In the present embodiment, a sealing portion 240 cooperating with the conical surface portion 120 is further provided on the valve core 200. The sealing portion 240 is arranged on the peripheral edge of one end of the valve core 200 facing the valve port 110. The sealing portion 240 is also in the form of a conical surface. When in the closed position, the sealing portion 240 can fit with the conical surface portion 120 to form surface contact. In this way, the local force on the peripheral edge of the end of the valve core 200 facing the valve port 110 can be reduced in the closed state, thereby reducing the wear of the valve core 200 and extending the service life of the one-way valve.

[0049] Furthermore, the fixing plug 100 is provided with a guide hole 130, and the valve core 200 includes:

[0050] The piston shaft 210 is slidably disposed in the guide hole 130, and the elastic member 400 elastically connects the piston shaft 210 and the fixing plug 100;

[0051] The piston ring 220 is inserted into one end of the piston shaft 210 to open or close the valve port 110 when driven by the piston shaft 210 . The first sealing ring 300 is disposed on the piston ring 220 .

[0052] Specifically, Figure 4 and Figure 5 In this embodiment, a guide hole 130 is further provided on the fixing plug 100, and the guide hole 130 is coaxially arranged with the valve port 110. The valve core 200 includes a piston shaft 210 and a piston ring 220, wherein the piston shaft 210 is penetrated in the guide hole 130 and can slide along the axial direction of the guide hole 130; in addition, a piston ring 220 is provided at one end of the piston shaft 210 close to the valve port 110, and the piston ring 220 can be fixedly connected to the piston shaft 210 by plugging or welding, and the outer dimensions of the piston ring 220 can be adapted to the shape and dimensions of the inner wall of the valve port 110, so that when the piston shaft 210 slides, the piston ring 220 can be driven It can be embedded in or detached from the valve port 110 to realize the opening and closing of the valve port 110. In addition, the cooperation between the piston shaft 210 and the guide hole 130 can limit the movement direction of the piston ring 220, ensuring the consistency of the position of the piston ring 220 each time the valve port 110 is opened and closed, thereby improving the reliability of the one-way valve. In addition, in the present embodiment, in order to reduce costs, the piston ring 220 can be integrally injection molded with the piston shaft 210, which can reduce the number of parts of the one-way valve and simplify the process flow, thereby reducing the processing and manufacturing costs, and the integral molding of the piston ring 220 and the piston shaft 210 is also conducive to improving the connection strength between the two, thereby ensuring the reliability of the one-way valve.

[0053] Furthermore, the valve core 200 further includes a limiter 230, which is convexly disposed at one end of the piston shaft 210 away from the piston ring 220, and is used to abut against and limit the elastic member 400. Figure 1In the present embodiment, a limiting body 230 is further provided on the valve core 200. The limiting body 230 is protruding from one end of the piston shaft 210 away from the piston ring 220 and surrounds the piston ring 220 in a circumferential direction. In addition, in the present solution, the elastic member 400 is sleeved on the piston shaft 210, and one end abuts against the fixing plug 100, and the other end abuts against the limiting body 230. In this way, the elastic member 400 can be limited and fixed by the fixing plug 100 and the limiting body 230, and the elastic force of closing the valve port 110 is applied to the piston shaft 210 through the limiting body 230, which facilitates the installation and fixation of the elastic member 400.

[0054] Furthermore, the fixing plug 100 comprises:

[0055] The inner ring portion 140 is slidably matched with the valve core 200;

[0056] The outer ring portion 150 is disposed around the inner ring portion 140, and the outer ring portion 150 and the inner ring portion 140 together form the valve port 110 and a flow passage communicating with the valve port 110;

[0057] The connecting portion 160 connects the inner ring portion 140 and the outer ring portion 150 .

[0058] Furthermore, a plurality of connecting portions 160 are provided, and the plurality of connecting portions 160 are spaced apart along the circumferential direction of the inner ring portion 140 .

[0059] Specifically, Figure 3 In the present embodiment, the fixing plug 100 comprises an inner ring portion 140 and an outer ring portion 150, the inner ring portion 140 and the outer ring portion 150 are coaxially arranged, the outer circumferential size of the outer ring portion 150 matches the inner wall of the pipeline so as to be connected with the pipeline, the inner ring portion 140 is provided with the guide hole 130 mentioned above for the installation of the valve core 200, the radial gap between the inner ring portion 140 and the outer ring portion 150 forms a flow channel for the fluid to pass through, and the same side ends of the inner ring portion 140 and the outer ring portion 150 are surrounded to form the above-mentioned valve port 110 structure, in addition, a connecting portion 160 is provided between the inner ring portion 140 and the outer ring portion 150, and the two ends of the connecting portion 160 are respectively connected to the inner ring portion 140 and the outer ring portion 150 so that the inner ring portion 140 and the outer ring portion 150 together form a whole. In order to ensure the overall structural strength, a plurality of connection portions 160 may be provided, and the plurality of connection portions 160 are spaced apart along the circumference of the inner ring portion 140 .

[0060] Furthermore, the fixing plug 100 further includes a guide portion 170, which is convexly disposed on a side of the inner ring portion 140 away from the valve port 110, and the elastic member 400 is sleeved on the outer periphery of the guide portion 170. Figure 2In order to further ensure the stability of the elastic member 400 when the valve core 200 slides, a guide portion 170 is further provided on the fixed plug 100. The guide portion 170 is protruded at one end of the inner ring portion 140 away from the valve port 110. The elastic member 400 can be sleeved on the outer periphery of the guide portion 170. The guide portion 170 limits the radial direction of the elastic member 400 to ensure the stability of the position of the elastic member 400 during compression and recovery deformation, thereby ensuring the stability of the opening and closing of the one-way valve.

[0061] Furthermore, the outer wall of the valve core 200 is provided with a first sealing groove 250, and the first sealing ring 300 is provided in the first sealing groove 250. Figure 1 During the compression process of the first sealing ring 300, the first sealing groove 250 provides support and positioning for the first sealing ring 300 to ensure the sealing effect.

[0062] Furthermore, the outer wall of the fixing plug 100 is provided with a second sealing groove 180, and the one-way valve further includes a second sealing ring 500, which is arranged in the second sealing groove 180 and is used for sealingly cooperating with the inner wall of the pipeline. Figure 1 and Figure 2 In this embodiment, the outer wall of the fixing plug 100 is provided with a second sealing groove 180, and the second sealing groove 180 extends along the circumference of the fixing plug 100. A second sealing ring 500 is provided in the second sealing groove 180. When the fixing plug 100 is installed in the pipeline, the second sealing ring 500 can elastically abut against the inner wall of the pipeline to achieve sealing between the fixing plug 100 and the inner wall of the pipeline, thereby preventing the fluid in the pipeline from flowing out from the outside of the fixing plug 100.

[0063] The utility model also proposes a refrigeration system, which includes a refrigeration pipeline and a one-way valve. Refrigerant flows in the refrigeration pipeline. The one-way valve is arranged in the refrigeration pipeline to ensure the one-way flow of the refrigerant. The specific structure of the one-way valve refers to the above-mentioned embodiment. Since the refrigeration system adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0064] The utility model also proposes a vehicle, which includes a body and a refrigeration system arranged in the body, the refrigeration system is used to cool the body, and the specific structure of the refrigeration system refers to the above-mentioned embodiment. Since the vehicle adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0065] The above description is only an optional embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A one-way valve, It is characterized in that include: A fixed plug having a valve port, wherein the valve port has a conical surface portion; A valve core is arranged on the fixed plug, the valve core has a closed position for sealing the valve port and an open position for opening the valve port, and a sealing portion and an escape portion are arranged on the outer peripheral wall of the valve core; A first sealing ring is provided between the sealing portion and the avoidance portion on the outer peripheral wall of the valve core, and in the closed position, the valve core and the valve port are sealed and connected via the first sealing ring; an elastic member, elastically connecting the valve core and the fixed plug so that the valve core has a tendency to remain in the closed position; Wherein, in the closed position, the sealing portion is in surface contact with the conical surface portion to limit the deformation of the first sealing ring, the avoidance portion is in clearance fit with the conical surface portion, and the side of the valve core facing the fixed plug is in clearance fit with the fixed plug.

2. The one-way valve according to claim 1, It is characterized in that The fixing plug is provided with a guide hole, and the valve core comprises: A piston shaft is slidably disposed in the guide hole, and the elastic member elastically connects the piston shaft and the fixing plug; The piston ring is inserted into one end of the piston shaft to open or close the valve port under the drive of the piston shaft, and the first sealing ring is arranged on the piston ring.

3. The one-way valve according to claim 2, It is characterized in that The valve core further comprises a limiting body, which is protrudingly arranged at one end of the piston shaft away from the piston ring, and is used for abutting and limiting the elastic member.

4. The one-way valve according to claim 1, It is characterized in that The fixing plug comprises: An inner ring portion, slidably matched with the valve core; An outer ring portion is arranged around the inner ring portion, and the outer ring portion and the inner ring portion together form the valve port and a flow passage communicating with the valve port; A connecting portion connects the inner ring portion and the outer ring portion.

5. The one-way valve according to claim 4, It is characterized in that There are a plurality of connecting parts, and the plurality of connecting parts are arranged at intervals along the circumferential direction of the inner ring part.

6. The one-way valve according to claim 4, It is characterized in that The fixing plug further comprises a guide portion, which is protrudingly arranged on a side of the inner ring portion away from the valve port, and the elastic member is sleeved on the outer periphery of the guide portion.

7. The one-way valve according to claim 1, It is characterized in that The outer side wall of the valve core is provided with a first sealing groove, and the first sealing ring is arranged in the first sealing groove.

8. The one-way valve according to claim 1, It is characterized in that The outer side wall of the fixing plug is provided with a second sealing groove, and the one-way valve further comprises a second sealing ring, which is arranged in the second sealing groove and is used for sealingly cooperating with the inner wall of the pipeline.

9. A refrigeration system, It is characterized in that A one-way valve comprising the one-way valve according to any one of claims 1 to 8.

10. A vehicle, It is characterized in that A refrigeration system comprising the refrigeration system of claim 9.

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