One-way valve and air conditioning system
By using a matching structure between the positioning member and the positioning hole in the check valve, the movement of the valve core is limited, and the problem of the valve core rotation or vibration due to unstable working conditions is solved, and the effect of reducing noise and ensuring the reliability of the valve closing is achieved. .
Patent Information
- Application Number
- CN202420154166.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-22
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-01-22
AI Technical Summary
When the working conditions of existing check valves are unstable in the air-conditioning system, the valve core is prone to rotate or vibrate due to unbalanced turbulent stress, resulting in noise and poor valve closing.
A check valve is designed, adopting a matching structure between the positioning member and the positioning hole to limit the freedom of movement of the valve core and the movement trajectory, prevent the valve core from rotating, and reduce turbulent disturbances when the working conditions are unstable.
It effectively reduces the rotation and vibration risks of the valve core, reduces noise, and ensures the reliability of the valve closing process of the check valve.
Smart Images
Figure CN222458476U_ABST
Abstract
Description
Technical Field
[0001] The utility model generally relates to the field of heat exchange technology, and in particular to a one-way valve and an air conditioning system. Background Art
[0002] The existing one-way valve includes a tube body, a valve seat and a valve core. The valve seat is fixedly arranged in the tube body, and the valve core is arranged in the tube body and can slide relative to the tube body to realize the process of opening and closing the valve.
[0003] When the valve core is in motion, it may come out of the tube body. In order to solve this problem, a fixed groove is provided on the inner wall of the tube body to limit the movement limit position of the valve core. When the working condition of the air-conditioning system where the one-way valve is located is unstable, for example, when the compressor is turned on or off or the frequency is changed, turbulence will occur in the flow field of the medium in the tube body. The flow field refers to the space occupied by the fluid movement. In a flow field, the speed, pressure, etc. will change. If the turbulence is too large, the force on the valve core in all directions will be seriously unbalanced, causing rotation or vibration, resulting in noise and poor valve closing. Utility Model Content
[0004] The one-way valve and air conditioning system provided by the utility model reduce the risk of valve core rotation and vibration.
[0005] According to the first aspect of the utility model, a one-way valve is provided, including a valve body, a valve seat, a valve core and a positioning member, the valve seat being arranged in the valve body, a valve port being arranged in the valve seat; the valve core being slidably arranged in the valve body for selectively blocking the valve port, a positioning hole being arranged in the valve core along the axial direction of the valve body; one end of the positioning member is connected to the valve seat, and the other end is passed through the positioning hole and slidably cooperates with the positioning hole.
[0006] In some embodiments, one end of the positioning member is detachably connected to the valve seat.
[0007] In some embodiments, a threaded hole is provided on a side of the valve seat facing the valve core, a threaded portion is provided on an outer wall of one end of the positioning member, and the threaded hole is threadedly connected to the threaded hole;
[0008] Alternatively, one of the sides of the positioning member and the valve seat that are close to each other is provided with a buckle, and the other is provided with a slot, and the buckle is engaged with the slot.
[0009] In some embodiments, a limiting portion is provided at one end of the positioning member away from the valve seat, and the limiting portion is used for limiting the position of the valve core.
[0010] In some embodiments, the outer diameter of the limiting portion is larger than the inner diameter of the positioning hole.
[0011] In some embodiments, the valve core includes a core body and a bracket, wherein the core body is used to selectively block the valve port; the bracket is disposed on an outer wall of the core body, and the positioning hole is disposed on the bracket.
[0012] In some embodiments, there are multiple positioning members and positioning holes, and the multiple positioning members are arranged along the circumference of the valve core and corresponding to the multiple positioning holes.
[0013] In some embodiments, the length of the positioning member along the axial direction of the valve body is greater than the maximum stroke distance of the valve core.
[0014] In some embodiments, one of the outer wall of the valve seat and the inner wall of the valve body is provided with a fixing protrusion, and the other is provided with a fixing groove, and the fixing protrusion is arranged in the fixing groove.
[0015] According to the second aspect of the utility model, an embodiment of the utility model further provides an air conditioning system, comprising the above-mentioned one-way valve.
[0016] An embodiment of the utility model has the following advantages or beneficial effects:
[0017] In the one-way valve and air-conditioning system of the embodiment of the utility model, when the valve core is not blocked at the valve port, the valve core and the valve port are staggered with each other, so that the valve port is opened, and the medium can flow through the valve port in the main body; when the valve core is blocked at the valve port, the valve port is closed, and the medium cannot flow through the valve port in the main body.
[0018] One end of the positioning member is connected to the valve seat, and the valve seat plays the role of fixing the positioning member. The positioning hole is set on the valve core along the axial direction of the main body, and the extension direction of the positioning hole is in the same direction as the movement direction of the valve core. The other end of the positioning member is penetrated through the positioning hole and slidably cooperates with the positioning hole. The positioning hole and the positioning member play the role of guiding cooperation. The positioning member can only move along the extension direction of the positioning hole. The positioning member limits the freedom of movement and movement trajectory of the valve core, plays the role of limiting the rotation of the valve core, prevents the turbulence caused by the flow of the medium when the working condition is unstable, and disturbs the movement of the valve core in the main body, reduces the risk of large rotation or vibration of the valve core, thereby reducing noise and ensuring the reliability of the one-way valve closing process. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to better understand the utility model, reference may be made to the embodiments shown in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the utility model. In addition, related elements or components may have different settings as known in the art. In addition, in the drawings, the same reference numerals represent the same or similar components in each of the drawings. By describing its example embodiments in detail with reference to the drawings, the above and other features and advantages of the utility model will become more apparent.
[0020] in:
[0021] Figure 1 The figure shows a schematic diagram of the structure of a one-way valve provided in the first embodiment of the present utility model;
[0022] Figure 2 The figure shows the internal structure of the one-way valve provided in the first embodiment of the present utility model;
[0023] Figure 3 The figure shows a schematic diagram of the structure of the valve seat in the one-way valve provided in the first embodiment of the utility model;
[0024] Figure 4 The figure shows a schematic diagram of the structure of a positioning member in a one-way valve provided in the first embodiment of the utility model;
[0025] Figure 5 The figure shows a schematic diagram of the structure of the valve core in the one-way valve provided in the first embodiment of the utility model;
[0026] Figure 6 The figure shows the internal structure of the one-way valve provided in the second embodiment of the present utility model;
[0027] Figure 7 Shown is a cross-sectional view of a one-way valve provided in Embodiment 2 of the present utility model;
[0028] Figure 8 Shown is a schematic structural diagram of a positioning member in a one-way valve provided in Embodiment 2 of the present utility model.
[0029] The reference numerals are described as follows:
[0030] 1. Valve body; 2. Valve seat; 3. Valve core; 4. Positioning piece;
[0031] 11. Fixing protrusions;
[0032] 21. Valve port; 22. Threaded hole; 23. Fixing groove; 24. Axial flow channel;
[0033] 31. core body; 32. bracket; 321. positioning hole;
[0034] 41. threaded portion; 42. limiting portion; DETAILED DESCRIPTION
[0035] The following will be combined with the drawings in the example embodiments of the utility model to clearly and completely describe the technical solutions in the example embodiments of the utility model. The example embodiments described herein are only for illustrative purposes and are not intended to limit the scope of protection of the utility model. Therefore, it should be understood that various modifications and changes can be made to the example embodiments without departing from the scope of protection of the utility model.
[0036] In the description of the present invention, unless otherwise clearly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance; the term "plurality" refers to two or more; the term "and / or" includes any and all combinations of one or more associated listed items. In particular, reference to "the / the" object or "an" object is also intended to indicate one of a possible plurality of such objects.
[0037] Unless otherwise specified or explained, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, an electrical connection, or a signal connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.
[0038] Further, in the description of the present invention, it should be understood that the directional words such as "upper", "lower", "inner", "outer" and the like described in the exemplary embodiments of the present invention are described at the angles shown in the accompanying drawings and should not be understood as limitations on the exemplary embodiments of the present invention. It should also be understood that, in the context, when it is mentioned that an element or feature is connected to another element (one or more) "upper", "lower", or "inner", "outer", it can not only be directly connected to the other (one or more) elements "upper", "lower", or "inner", "outer", but can also be indirectly connected to the other (one or more) elements "upper", "lower", "inner", "outer" through an intermediate element.
[0039] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.
[0040] This embodiment provides a one-way valve, such as Figure 1-Figure 2 As shown, the one-way valve includes a valve body 1, a valve seat 2 and a valve core 3. The valve body 1 is a tubular structure, and the valve body 1 can specifically be a square tube, a round tube, etc. The valve body 1 has a valve cavity, the valve seat 2 is arranged in the valve cavity of the valve body 1, and a valve port 21 is arranged in the valve seat 2. The valve core 3 is slidably arranged in the valve cavity of the valve body 1 for selectively blocking the valve port 21.
[0041] The valve seat 2 contains a medium, which may be a flowable heat exchange medium, for example, a medium material that can realize the conversion of thermal energy and mechanical energy. The valve core 3 can move in the valve core 3 along the axial direction of the valve body 1. When the valve core 3 is not blocked at the valve port 21, the valve core 3 and the valve port 21 are staggered to realize the opening of the valve port 21, so that the medium can flow in the valve body 1 through the valve port 21; when the valve core 3 is blocked at the valve port 21, the valve port 21 is closed, and the medium cannot flow in the valve body 1 through the valve port 21.
[0042] In one embodiment, Figure 2-Figure 3 As shown, the shape of the valve seat 2 is similar to a cylindrical structure, and the outer wall of the valve seat 2 is in contact with the inner wall of the valve body 1. The valve seat 2 is provided with an axial flow channel 24 along the axial direction of the valve body 1, and the axial flow channel 24 is connected to the valve port 21. When the valve core 3 and the valve port 21 are staggered, along the axial direction of the valve body 1, the medium located on one side of the valve seat 2 can enter the axial flow channel 24 through the valve port 21 and enter the other side of the valve seat 2, thereby realizing the circulation of the medium.
[0043] The valve port 21 is specifically a groove arranged on the end surface of the valve seat 2 facing the valve core 3, and the groove is specifically a tapered structure, that is, the groove is specifically a conical groove. The small end of the tapered structure is connected to the axial flow channel 24, and the large end of the tapered structure is arranged toward the valve core 3, so that the valve core 3 can enter the groove through the large end of the tapered structure, and the tapered structure plays a guiding role in the movement of the valve core 3.
[0044] In one embodiment, Figure 2-Figure 3 As shown, one of the outer wall of the valve seat 2 and the inner wall of the valve body 1 is provided with a fixing protrusion 11, and the other is provided with a fixing groove 23, and the fixing protrusion 11 is arranged in the fixing groove 23. The fixing between the valve seat 2 and the valve body 1 is achieved by the mutual cooperation between the fixing protrusion 11 and the fixing groove 23. Of course, it can be understood that the valve seat 2 and the valve body 1 can also be fixed by various methods such as threaded connection and interference fit. This embodiment does not limit the fixing method between the valve seat 2 and the valve body 1, and it can be adjusted according to actual production conditions.
[0045] For example, the outer wall of the valve seat 2 is provided with a fixing groove 23, and the inner side surface of the valve body 1 is provided with a fixing protrusion 11, and the fixing protrusion 11 cooperates with the fixing groove 23 to fix the valve seat 2 in the valve body 1. In the actual processing, the fixing groove 23 needs to be processed on the side of the valve seat 2 first, and then the valve seat 2 is placed in the valve cavity, and finally the valve body 1 is extruded to form the fixing protrusion 11 and clamp the fixing groove 23. In this way, the valve seat 2 can be firmly fixed in the valve cavity.
[0046] Specifically, the fixing protrusion 11 is a continuous annular structure, so that the fixing protrusion 11 and the fixing groove 23 have a larger contact area, which improves the stability and reliability of the connection between the valve body 1 and the valve seat 2. At the same time, the fixing protrusion 11 with a continuous structure is simpler and easier to process. Of course, in some other embodiments, the fixing protrusion 11 can also be a plurality of convex points arranged at intervals.
[0047] If the flow field of the medium in the valve body 1 is turbulent, the forces on the valve core 3 in all directions will be seriously unbalanced, and the valve core 3 will rotate or vibrate, resulting in noise and poor closing quality of the one-way valve.
[0048] To solve this problem, Figure 2-Figure 4 As shown, the one-way valve provided in this embodiment also includes a positioning member 4, a positioning hole 321 is provided in the valve core 3 along the axial direction of the valve body 1, one end of the positioning member 4 is connected to the valve seat 2, and the other end is penetrated through the positioning hole 321 and slidably cooperates with the positioning hole 321.
[0049] In the one-way valve provided in this embodiment, one end of the positioning member 4 is connected to the valve seat 2, and the valve seat 2 plays the role of fixing the positioning member 4. The positioning hole 321 is arranged on the valve core 3 along the axial direction of the valve body 1, and the extension direction of the positioning hole 321 is in the same direction as the movement direction of the valve core 3. The other end of the positioning member 4 is penetrated through the positioning hole 321 and slidably cooperates with the positioning hole 321. The positioning hole 321 and the positioning member 4 play the role of guiding cooperation. The positioning member 4 can only move along the extension direction of the positioning hole 321. The positioning member 4 limits the freedom of movement and movement trajectory of the valve core 3, and plays the role of limiting the rotation of the valve core 3, preventing the turbulence caused by the flow of the medium when the working condition is unstable from disturbing the movement of the valve core 3 in the valve body 1, reducing the risk of the valve core 3 rotating or vibrating significantly, thereby reducing noise and ensuring the reliability of the one-way valve closing process.
[0050] The positioning member 4 is a positioning rod or a positioning bar, and the shapes of the positioning member 4 and the positioning hole 321 are adapted. For example, the positioning member 4 can be a cylindrical structure, and the positioning hole 321 can be a round hole structure; the positioning member 4 can be a square rod structure, and the positioning hole 321 can be a square hole structure. This embodiment does not limit the shapes of the positioning member 4 and the positioning hole 321, and only needs to enable the positioning member 4 to slide relative to the positioning hole 321.
[0051] Specifically, the size of the positioning member 4 is smaller than that of the positioning hole 321 , that is, the positioning member 4 and the positioning hole 321 are clearance-fitted, and when the valve core 3 moves relative to the valve body 1 , the positioning member 4 and the positioning hole 321 are slidingly fitted.
[0052] In one embodiment, Figure 3-Figure 5 As shown, one end of the positioning member 4 is detachably connected to the valve seat 2 .
[0053] The positioning member 4 and the valve seat 2 are not fixedly connected, but are detachably connected to facilitate installation and removal. Specifically, during installation, after the positioning member 4 is inserted into the positioning hole 321, the positioning member 4 is connected to the valve seat 2 to complete the installation process of the positioning member 4 and the valve core 3; during removal, the positioning member 4 is first removed from the valve seat 2, and then the positioning member 4 is separated from the positioning hole 321 of the valve core 3 to complete the removal process of the positioning member 4 and the valve core 3.
[0054] Specifically, a threaded hole 22 is provided on one side of the valve seat 2 facing the valve core 3, that is, a threaded hole 22 is provided at a position of the valve seat 2 corresponding to the positioning member 4, a threaded portion 41 is provided on an outer wall of one end of the positioning member 4, and the threaded portion 41 is specifically a threaded section provided on the outside of one end of the positioning member 4, and the threaded hole 22 is threadedly connected to the threaded hole 22. The positioning member 4 is fixed to the valve seat 2 by threaded matching.
[0055] Specifically, one of the sides of the positioning member 4 and the valve seat 2 that are close to each other is provided with a buckle, and the other is provided with a slot. For example, the outer wall surface of one end of the positioning member 4 is provided with a buckle, and the slot is provided on the valve seat 2, and the buckle is engaged with the slot. The positioning member 4 and the valve seat 2 are fixed by a snap connection.
[0056] Of course, the fixing method between the positioning member 4 and the valve seat 2 includes but is not limited to threaded connection and clamping method, and can also be other methods. For example, a fixing hole is provided on the valve seat 2, the size of the positioning member 4 is slightly larger than the fixing hole, one end of the positioning member 4 is passed through the fixing hole and has an interference fit with the fixing hole, which can also achieve the fixation between the positioning member 4 and the valve seat 2.
[0057] In one embodiment, the length of the positioning member 4 along the axial direction of the valve body 1 is greater than the maximum stroke distance of the valve core 3 .
[0058] Specifically, the length of the positioning member 4 is determined according to the stroke of the valve core 3. Since the length of the positioning member 4 along the axial direction of the valve body 1 is greater than the maximum stroke distance of the valve core 3, when the valve core 3 is at the maximum stroke, that is, the valve core 3 is at the maximum valve opening position, part of the positioning member 4 is still located in the positioning hole 321, so that the valve core 3 does not escape the constraint of the positioning member 4. Even if the valve core 3 moves again toward the direction close to the valve seat 2, the valve core 3 can still be axially guided and rotationally constrained by the positioning member 4.
[0059] It is understandable that if Figure 3-Figure 5 As shown, along the axial direction of the valve body 1, the length of the positioning member 4 can be less than the length of the positioning hole 321, that is, the end of the positioning member 4 away from the valve seat 2 is hidden inside the positioning hole 321; the length of the positioning member 4 can also be greater than the length of the positioning hole 321, that is, the positioning member 4 passes through the positioning hole 321, and the end of the positioning member 4 away from the valve seat 2 is exposed to the outside of the valve core 3; of course, the length of the positioning member 4 can also be equal to the length of the positioning hole 321, and when the valve core 3 is blocked in the valve port 21, the ends of the positioning member 4 away from the valve seat 2 and the valve core 3 are flush.
[0060] In one embodiment, there are multiple positioning members 4 and positioning holes 321, and multiple positioning members 4 are arranged along the circumference of the valve core 3 and corresponding to the multiple positioning holes 321. The multiple positioning members 4 and the multiple positioning holes 321 cooperate with each other to improve the balance of the valve core 3 during movement.
[0061] For example, the number of the positioning members 4 and the positioning holes 321 is three, the three positioning holes 321 are evenly distributed along the circumference of the valve core 3, and the angle between two adjacent positioning holes 321 is 120°. The three positioning members 4 form a triangular structure, which has the advantage of structural stability, and the three positioning members 4 are evenly distributed along the circumferential direction of the valve seat 2, and the angle between two adjacent positioning members 4 is 120°.
[0062] It is understandable that if the upstream and downstream pressure difference of the one-way valve in the air-conditioning system is low and the working stability is high, the number of positioning members 4 can be appropriately reduced to achieve the purpose of reducing costs.
[0063] In one embodiment, Figure 5 As shown, the valve core 3 includes a core body 31 and a bracket 32. The core body 31 is used to selectively block the valve port 21. The bracket 32 is arranged on the outer wall of the core body 31 to assist in ensuring the balance of the core body 31 during movement. The end of the bracket 32 away from the core body 31 can be slidably matched with the valve body 1, and the bracket 32 guides and supports the valve body 1.
[0064] Specifically, there are multiple brackets 32 , which are evenly distributed on the side of the core 31 , and there is a gap between two adjacent brackets 32 , which plays a role in reducing weight.
[0065] If the positioning member 4 is disposed in the interval between two adjacent brackets 32, although the positioning member 4 can also limit the rotation of the valve core 3, the positioning member 4 will limit the rotation of the valve core 3 only after the valve core 3 rotates a certain angle, which affects the effectiveness and timeliness of the limit.
[0066] To solve this problem, Figure 5As shown, the positioning hole 321 provided in this embodiment is arranged on the bracket 32, that is, the positioning member 4 passes through the positioning hole 321 of the bracket 32, and under the constraint of the positioning member 4 and the positioning hole 321, the valve core 3 can only move along the axial direction of the valve body 1, and the valve core 3 will not rotate relative to the valve body 1, thereby eliminating the possibility of rotation of the valve core 3 from the root, thereby ensuring the effectiveness and reliability of the circumferential limit of the valve core 3.
[0067] In one embodiment, a limiting groove (not shown in the figure) may also be provided on the inner wall of the valve body 1. Along the axial direction of the valve body 1, the valve seat 2 and the limiting groove are respectively provided on both sides of the valve core 3. The limiting groove is used to limit the valve core 3 to prevent the valve core 3 from falling out of the valve body 1 during movement.
[0068] This embodiment also provides an air conditioning system, including the one-way valve, wherein one end of the positioning member 4 of the one-way valve is connected to the valve seat 2, and the valve seat 2 plays the role of fixing the positioning member 4. The positioning hole 321 is arranged on the valve core 3 along the axial direction of the valve body 1, and the extension direction of the positioning hole 321 is in the same direction as the movement direction of the valve core 3. The other end of the positioning member 4 is penetrated through the positioning hole 321 and slidably cooperates with the positioning hole 321. The positioning hole 321 and the positioning member 4 play the role of guiding cooperation. The positioning member 4 can only move along the extension direction of the positioning hole 321. The positioning member 4 limits the freedom of movement and movement trajectory of the valve core 3, and plays the role of limiting the rotation of the valve core 3, preventing the turbulence caused by the flow of the medium when the working condition is unstable from disturbing the movement of the valve core 3 in the valve body 1, reducing the risk of the valve core 3 rotating or vibrating significantly, thereby reducing noise and ensuring the reliability of the one-way valve closing process.
[0069] Embodiment 2
[0070] This embodiment is similar to the first embodiment, and the difference lies only in the detailed structure of the positioning member 4 .
[0071] like Figure 6-Figure 8 As shown, the positioning member 4 provided in this embodiment is provided with a limiting portion 42 at one end away from the valve seat 2, and the limiting portion 42 is used to limit the valve core 3. The limiting portion 42 is used to achieve axial limiting of the valve core 3 when the valve core 3 moves along the axial direction of the valve body 1, thereby preventing the valve core 3 from being separated from the positioning member 4.
[0072] In one embodiment, the outer diameter of the limiting portion 42 is larger than the outer diameter of the positioning member 4. Since the outer diameters of the positioning member 4 and the limiting portion 42 are different, the positioning member 4 and the limiting portion 42 form a stepped shaft structure. The outer diameter of the limiting portion 42 is larger than the inner diameter of the positioning hole 321, and the limiting portion 42 with a larger outer diameter cannot enter the positioning hole 321, thereby limiting the stroke of the valve core 3 along the axial direction of the valve body 1.
[0073] It can be understood that, since this embodiment has the limiting portion 42, the limiting groove of the first embodiment can be eliminated, or the limiting groove and the limiting portion 42 can be provided at the same time to play a dual limiting role.
[0074] It should be noted that the one-way valve shown in the drawings and described in this specification is only an example of the principle of the present invention. It should be clearly understood by those skilled in the art that the principle of the present invention is not limited to any details or any components of the device shown in the drawings or described in the specification.
[0075] It should be understood that the utility model does not limit its application to the detailed structure and arrangement of the components proposed in this specification. The utility model can have other embodiments and can be implemented and executed in a variety of ways. The aforementioned deformation forms and modified forms fall within the scope of the utility model. It should be understood that the utility model disclosed and defined in this specification extends to all alternative combinations of two or more individual features mentioned or evident in the text and / or the drawings. All these different combinations constitute multiple alternative aspects of the utility model. The embodiments described in this specification illustrate the best known methods for implementing the utility model and will enable those skilled in the art to utilize the utility model.
[0076] Those skilled in the art will readily come up with other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variation, use, or adaptation of the present invention, which follows the general principles of the present invention and includes common knowledge or customary technical means in the art that are not disclosed in the present invention. The specification and example embodiments are to be considered as exemplary only, and the true scope and spirit of the present invention are indicated by the appended claims.
[0077] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of protection of the present invention is limited only by the appended claims.
Claims
1. A one-way valve, characterized in that: include: Valve body; A valve seat is arranged in the valve body, and a valve port is arranged in the valve seat; A valve core is slidably disposed in the valve body and is used for selectively blocking the valve port. A positioning hole is disposed in the valve core along the axial direction of the valve body. A positioning member, one end of which is connected to the valve seat, and the other end of which is passed through the positioning hole and slidably matched with the positioning hole.
2. The one-way valve according to claim 1, characterized in that: One end of the positioning member is detachably connected to the valve seat.
3. The one-way valve according to claim 2, characterized in that: A threaded hole is provided on one side of the valve seat facing the valve core, a threaded portion is provided on an outer wall of one end of the positioning member, and the threaded hole is threadedly connected to the threaded hole; Alternatively, one of the sides of the positioning member and the valve seat that are close to each other is provided with a buckle, and the other is provided with a slot, and the buckle is engaged with the slot.
4. The one-way valve according to claim 1, characterized in that: A limiting portion is provided at one end of the positioning member away from the valve seat, and the limiting portion is used for limiting the position of the valve core.
5. The one-way valve according to claim 4, characterized in that: The outer diameter of the limiting portion is greater than the inner diameter of the positioning hole.
6. The one-way valve according to claim 1, characterized in that: The valve core comprises: A core body, used for selectively blocking the valve port; The bracket is arranged on the outer wall of the core body, and the positioning hole is arranged on the bracket.
7. The one-way valve according to claim 1, characterized in that: The number of the positioning members and the positioning holes is multiple, and the multiple positioning members are arranged along the circumference of the valve core and corresponding to the multiple positioning holes.
8. The one-way valve according to any one of claims 1 to 7, characterized in that: The length of the positioning member along the axial direction of the valve body is greater than the maximum stroke distance of the valve core.
9. The one-way valve according to any one of claims 1 to 7, characterized in that: One of the outer wall of the valve seat and the inner wall of the valve body is provided with a fixing protrusion, and the other is provided with a fixing groove, and the fixing protrusion is arranged in the fixing groove.
10. An air conditioning system, characterized in that: The one-way valve comprises the one-way valve according to any one of claims 1 to 9.