Stop valve and its air conditioning unit

Abstract

The stop valve (100) and its air conditioning unit (200), the stop valve (100) includes a valve body (10) made of stainless steel, the valve body (10) having at least a first opening (11) and a second opening (12) formed therein, a valve core (20), at least a portion of the valve core (20) being provided within the valve body (10) and movable within the valve body (10) so as to connect or block the first opening (11) and the second opening (12), a second connecting pipe (121) made of stainless steel, the second connecting pipe (121) being provided at the second opening (12), and a single joint (50), the single joint (50) being connected to the valve body (10) by the second connecting pipe (121), and the single joint (50) having a second thread (51) provided on an outer circumferential wall thereof. The stop valve (100) and its air conditioning unit (200) allow for easier installation and connection between pipelines.

Description

Technical Field

[0001] Related Applications This application claims the priority of a Chinese patent application with an application number of 202123211188.9 and an invention title of "Stop Valve and Its Air Conditioning Unit", which was filed on December 18, 2021, and all of its contents are incorporated herein by reference.

[0002] This application relates to the technical field of cooling, and in particular, to a stop valve and its air conditioning unit.

Background Art

[0003] In an air conditioning unit, a stop valve is for playing an important role of cutting off and throttling the medium in the pipeline where the stop valve is located. The opening and closing member of the stop valve is a valve core, and the valve core is mainly applied to cut off the medium in a low-temperature environment.

[0004] For the related stop valve, the connecting pipe of the stop valve is connected to the pipeline of the air conditioning unit by welding. When the user uses it, welding is required. However, in many cases, the installation site of the air conditioning unit does not have welding conditions, and the installation is inconvenient.

Summary of the Invention

[0005] According to various embodiments of the present application, a stop valve is provided.

[0006] A valve body made of stainless steel material with at least a first opening and a second opening drilled therein, A valve core at least partially provided inside the valve body, the valve core being movable inside the valve body so as to communicate or cut off the first opening and the second opening, A second connecting pipe made of stainless steel material provided at the second opening, A single joint connected to the valve body by the second connecting pipe and having a second thread provided on its outer peripheral wall, A stop valve including the above.

[0007] In one embodiment, the single fitting is a stainless steel single fitting.

[0008] In one embodiment, one end of the second connecting pipe enters into a single fitting and is connected to the single fitting.

[0009] In one embodiment, a third projection is provided on the outer wall of the single joint, the third projection extends radially to the single joint, the third projection is located between the valve body and the second thread, and the third projection is provided with at least two second planes parallel to each other.

[0010] In one embodiment, the third projection is provided with six second planes.

[0011] In one embodiment, a through-hole is provided within the single joint, the inner wall of the through-hole is provided in a limiting portion, and one end of the second connecting pipe enters the through-hole and abuts against the limiting portion.

[0012] In one embodiment, a valve seat is provided inside the valve body, a valve opening is drilled in the valve seat, and the valve opening and the first opening are in communication. An end cover is provided at the opening of one end of the valve body away from the valve seat, and the valve core includes a connecting segment and an operating segment that are connected to each other, the operating segment being inserted into the end cover, A groove is provided on the end face of one end of the operating segment away from the connecting segment, and at least two parallel first planes are provided within the groove, or at least two parallel first planes are provided on the outer wall of the operating segment.

[0013] In one embodiment, a first sealing member is provided on the outer wall of the connecting segment, and the first sealing member is in contact with the inner wall of the valve body.

[0014] In one embodiment, first projections are provided on both sides of the first sealing member, and the first projections on both sides form a first sealing groove. A third sealing member is provided on the first projection adjacent to the end cover, and the third sealing member is capable of contacting the end cover.

[0015] In one embodiment, a second sealing member is provided on the side of the connecting segment facing the valve opening, and a second projection is provided on the end face of the valve seat facing the valve core, and the second sealing member is capable of contacting the second projection.

[0016] In one embodiment, the stop valve further includes a valve assembly, the valve assembly being connected to a valve body.

[0017] In one embodiment, the valve assembly includes a connector which is connected to a valve body and which serves as a passage through which a medium enters the valve body.

[0018] In one embodiment, the valve assembly further includes a valve core, a housing, and a fourth sealing member, the valve core being located within the connector and used to communicate or block communication between the inside of the valve body and the inside of the connector, the housing being fitted to the outer circumference of the connector, and the fourth sealing member being located between the housing and the connector and used to engage with the housing and seal the connector.

[0019] In one embodiment, the second connecting pipe is connected to the valve body.

[0020] In one embodiment, the stop valve further includes a first connecting pipe, the first connecting pipe is provided in a first opening, and the first connecting pipe is connected to the valve body.

[0021] In one embodiment, the single joint and the second connecting pipe are fixed by a method of melting the base material, and / or the second connecting pipe and the valve body are fixed by a method of melting the base material.

[0022] This application further provides the following technical embodiments. An air conditioning unit including the stop valve mentioned above.

[0023] Details of one or more embodiments of this application are described in the following drawings and description. Other features, purposes and advantages of this application will become apparent from the specification, drawings and claims. [Brief explanation of the drawing]

[0024] To better describe and explain the embodiments and / or examples of these applications disclosed herein, one or more drawings can be referred to. The additional details or examples used to explain the drawings should not be considered as limiting the scope of any of the disclosed invention, the embodiments and / or examples described herein, and the optimal forms of these inventions understood herein.

[0025] [Figure 1] It is a cross-sectional view of a stop valve according to an embodiment of the present application. [Figure 2] It is a front view of a stop valve according to an embodiment of the present application. [Figure 3] It is a cross-sectional view of a single joint of a stop valve according to an embodiment of the present application. [Figure 4] It is a top view of a stop valve according to an embodiment of the present application. [Figure 5] It is a perspective view of a stop valve according to an embodiment of the present application. [Figure 6] It is a cross-sectional view of a stop valve according to an embodiment of the present application. [Figure 7] It is a schematic diagram of an air conditioning unit according to an embodiment of the present application.

[0026] The meanings of each reference numeral in the figure are as follows. 100 Stop valve, 200 Air conditioning unit, 10 Valve body, 11 First opening, 111 First connecting pipe, 12 Second opening, 121 Second connecting pipe, 13 Valve seat, 131 Valve port, 132 Second protrusion, 20 Valve core, 21 Operating segment, 211 Concave groove, 2111 First plane, 212 First screw, 22 Connecting segment, 221 First sealing member, 222 First protrusion, 223 First sealing groove, 224 Third sealing member, 225 Second sealing member, 23 Guide segment, 30 Mounting base, 40 End cover, 50 Single joint, 51 Second screw, 52 Through hole, 53 Limiting part, 54 Third protrusion, 541 Second plane, 60 Valve assembly, 61 Connecting body, 62 Valve core, 63 Housing, 64 Fourth sealing member. [Modes for carrying out the invention]

[0027] The technical aspects of the embodiments of this application will be described clearly and completely below with reference to the drawings of the embodiments of this application, although it is clear that the embodiments described are only a selection of embodiments of this application and not all embodiments. All other embodiments that a person skilled in the art could obtain without creative effort based on the embodiments of this application shall all fall within the scope of protection of this application.

[0028] It should be noted that when an assembly is described as being "attached" to another assembly, it may be directly attached to the other assembly, or there may be an intervening assembly. When one assembly is described as being "provided" to another assembly, it may be directly provided to the other assembly, or there may be an intervening assembly simultaneously. When one assembly is described as being "fixed" to another assembly, it may be directly fixed to the other assembly, or there may be an intervening assembly simultaneously.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in which this application pertains. Herein, the terms used in the specification of this application are for the sole purpose of describing specific embodiments and are not intended to limit this application. The terms “and / or” as used herein include any and all combinations of one or more of the related enumerated items.

[0030] Referring to Figure 1, the stop valve 100 provided in this application is attached to an air conditioning unit 200 and used to enable and disable piping.

[0031] Specifically, the stop valve 100 includes a valve body 10 and a valve core 20 made of stainless steel. The inside of the valve body 10 is hollow and used to house components such as the valve core 20. At least a portion of the valve core 20 is provided inside the valve body 10 and is movable along the axial direction of the valve body 10. In this embodiment, the valve core 20 is made of stainless steel, while in other embodiments, the valve core 20 may be made of a material such as brass.

[0032] The valve body 10 has a first opening 11 and a second opening 12, and the stop valve 100 further includes a first connecting pipe 111 and a second connecting pipe 121, the first connecting pipe 111 being located in the first opening 11 and the second connecting pipe 121 being located in the second opening 12. The first connecting pipe 111 and the second connecting pipe 121 serve as the inlet or outlet for the medium, respectively. When the first connecting pipe 111 serves as the inlet for the medium, the medium enters the stop valve 100 from the first connecting pipe 111, enters the interior of the valve body 10 through the first opening 11, and when the stop valve 100 is open, the medium flows out of the stop valve 100 through the second opening 12 and the second connecting pipe 121. Conversely, the medium may enter the valve body 10 from the second connecting pipe 121 through the second opening 12, and then flow out of the stop valve 100 through the first opening 11 and the first connecting pipe 111. Both the first connecting pipe 111 and the second connecting pipe 121 are made of stainless steel and connected to the valve body 10, for example by welding. This not only reduces costs but also lowers the difficulty of welding because the material is the same as that of the valve body 10.

[0033] Furthermore, the first connecting pipe 111 and the second connecting pipe 121 are welded to the valve body 10 using a method that melts the base material, such as laser welding or argon arc welding, resulting in minimal deformation.

[0034] A valve seat 13 is provided inside the valve body 10, and a valve port 131 is drilled in the valve seat 13, and the valve port 131 is in communication with the first opening 11. When the valve core 20 comes into contact with the valve seat 13, the first opening 11 and the second opening 12 can be blocked. In this embodiment, the valve seat 13 is made of stainless steel, but in other embodiments, the valve seat 13 may be made of a material such as brass.

[0035] The valve seat 13 and the valve body 10 are provided separately and connected, for example, by a fixed connection. Because stainless steel is relatively hard, providing them separately makes processing easier and reduces costs. Furthermore, the valve body 10 and the valve seat 13 can be used in stop valves 100 with different structures, enhancing versatility and flexibility.

[0036] The valve seat 13 and the valve body 10 are fixed by welding, which enhances their robustness.

[0037] Openings are provided at both ends of the valve body 10. An end cover 40 is provided at the opening at one end of the valve body 10 that is away from the valve seat 13. A female thread is provided inside the end cover 40. A first thread 212 is provided on the outer wall of one end of the valve core 20. The axial movement of the valve core 20 is achieved by screwing the female thread of the end cover 40 and the first thread 212 of the valve core 20 together.

[0038] Referring to Figures 1 and 2, the valve core 20 includes a connecting segment 22 and an operating segment 21 connected to each other, a first screw 212 is provided on the operating segment 21, the operating segment 21 is inserted into the end cover 40, and a groove 211 is provided on the end face of the operating segment 21 away from the connecting segment 22, and at least two parallel first planes 2111 are provided within the groove 211 so that an external tool can rotate and operate the valve core 20.

[0039] Furthermore, within the groove 211, there are six sequentially connected first planes 2111, which are operated by an internal hex wrench; in other words, there are three pairs of first planes 2111 that are parallel to each other.

[0040] In other embodiments, the first parallel planes 2111 are provided on the outer wall of the operating segment 21, and the first planes 2111 may always protrude outside the end cover 40, that is, even when the valve core 20 is in contact with the valve seat 13, the first planes 2111 remain outside the end cover 40, making operation easy.

[0041] A first sealing member 221 is provided on the outer wall of the connecting segment 22, and the first sealing member 221 is in contact with the inner wall of the valve body 10.

[0042] First projections 222 are provided on both sides of the first sealing member 221, and the first projections 222 on both sides form a first sealing groove 223. A third sealing member 224 is provided on the first projection 222 that is close to the end cover 40, and the third sealing member 224 is capable of contacting the end cover 40. When the stop valve 100 is fully open, the third sealing member 224 contacts the end cover 40 and serves as a buffer and limiter.

[0043] The valve core 20 further includes a guide segment 23, which is connected to a connecting segment 22, and the guide segment 23 can enter the valve opening 131 and serve to guide the axial movement of the valve core 20. When the stop valve 100 is closed, the guide segment 23 enters the valve opening 131 and comes into contact with the inner wall of the valve opening 131.

[0044] A second sealing member 225 is provided on the side of the connecting segment 22 facing the valve opening 131 (as shown in Figure 6), and a second projection 132 is provided on the end face of the valve seat 13 facing the valve core 20. The second sealing member 225 can come into contact with the second projection 132, thereby enhancing the sealing performance with respect to the valve opening 131.

[0045] Furthermore, the second sealing member 225 includes a pure copper gasket or sealing ring, and since both the pure copper gasket and sealing ring are relatively soft, the sealing performance can be enhanced.

[0046] Furthermore, the second projection 132 is annular in shape and is provided surrounding the circumferential direction of the valve opening 131, or there are multiple second projections 132, and the multiple second projections 132 are uniformly distributed surrounding the circumferential direction of the valve opening 131.

[0047] One end of the second projection 132 that is close to the valve core 20 is relatively pointed, and the thickness of the second projection 132 gradually decreases along the direction approaching the valve core 20 so that it can be fitted into the second sealing member 225.

[0048] The stop valve 100 further includes a single joint 50, which is connected to the valve body 10 by a second connecting pipe 121, for example, a fixed connection, and a second thread 51 is provided on the outer wall of the single joint 50. Because the single joint 50 has a relatively large outer diameter, it cannot directly enter the second opening 12 and is connected by the second connecting pipe 121, making connection easy. The second thread 51 on the outside of the single joint 50 can be directly screwed into the nut in the pipeline of the air conditioning unit 200, eliminating the need to connect the indoor and outdoor units by welding at the installation site, thus facilitating on-site installation of the air conditioning unit 200.

[0049] The single joint 50 has a through hole 52 that extends from one end to the other of the single joint 50, and the through hole 52 is in communication with the second connecting pipe 121 to realize the flow of the medium.

[0050] The single joint 50 is made of stainless steel and welded to the second connecting pipe 121, which not only reduces costs but also lowers the difficulty of welding.

[0051] The single joint 50 and the second connecting pipe 121 are welded together using a method that melts the base material.

[0052] Referring to Figures 4 and 5, a third projection 54 is provided on the outer wall of the single joint 50. The third projection 54 is located between the second thread 51 of the single joint 50 and the valve body 10. That is, the third projection 54 is closer to the valve body 10 than to the second thread 51. The third projection 54 has at least two parallel second planes 541 that allow an external tool to clamp it. When the single joint 50 is butted against a nut in the pipeline of the air conditioning unit 200, it is necessary to rotate the nut. By clamping the second planes 541 when tightening, it is prevented that the second connecting pipe 121 will twist in conjunction with the rotation of the nut, and furthermore, it is prevented that the valve body 10 and the first connecting pipe 111 will twist in conjunction. Because the pipeline fixedly connected to the first connecting pipe 111 does not move, the twisting of the first connecting pipe 111 will cause the first connecting pipe 111 to twist relative to the pipeline, and may even break.

[0053] Furthermore, the third projection 54 is provided with a hexagonal surface so that an external tool can clamp the single joint 50 from different angles; that is, it is provided with three pairs of parallel second planes 541, and the six second planes 541 are connected in sequence. The external tool may include a movable wrench, a fixed wrench, etc.

[0054] The welding strength is enhanced by having one end of the second connecting pipe 121 enter the single joint 50.

[0055] Referring to Figure 3, a limiting portion 53 is provided on the inner wall of the through hole 52, and the second connecting pipe 121 comes into contact with the limiting portion 53, preventing the second connecting pipe 121 from being inserted excessively into the single joint 50.

[0056] In this embodiment, the limiting portion 53 is a stepped surface, while in other embodiments, the limiting portion 53 may be a protrusion or the like.

[0057] The stop valve 100 further includes a frame 30, which is annular in shape and fitted to the outside of the valve body 10 and connected to the valve body 10, for example by a fixed connection, and the frame 30 and the valve body 10 are provided separately.

[0058] The frame 30 and the valve body 10 are fixedly connected by welding, making processing easy.

[0059] Furthermore, the stop valve 100 further includes a valve assembly 60, which is connected to the valve body 10. In this embodiment, the valve assembly 60 and the second opening 12 are positioned opposite each other and are used as an air inlet for replenishing the medium throughout the air conditioning unit 200 or an exhaust outlet for releasing the medium. In other embodiments, the axis of the valve assembly 60 may be perpendicular to the axis of the second opening 12, and the valve assembly 60 may be positioned at other locations on the valve body 10.

[0060] In other embodiments, the valve assembly 60 may not be provided.

[0061] The valve assembly 60 includes a connector 61, which is connected to the valve body 10. The connector 61 is a passage through which the medium enters the valve body 10. The connector 61 is made of stainless steel, is provided separately from the valve body 10, and is easy to process.

[0062] The valve assembly 60 further includes a valve core 62, a housing 63, and a fourth sealing member 64. The valve core 62 is provided within the connector 61 so as to enable communication or isolation between the inside of the valve body 10 and the inside of the connector 61. The housing 63 is fitted to the outer circumference of the connector 61 and is used to protect the valve core 62 and prevent the entry of external impurities. The fourth sealing member 64 is located between the housing 63 and the connector 61 and engages with the housing 63 to seal the connector 61.

[0063] Specifically, an elastic member (not shown) is provided at one end of the valve core 62. When the valve core 62 is not subjected to external pressure, it maintains a closed state, and at this time, the connector 61 maintains a seal, isolating the inside of the valve body 10 from the outside. When the valve core 62 is subjected to pressure, the valve core 62 moves toward the valve body 10 by pressing against the elastic member, thereby releasing the seal and creating communication between the inside of the valve body 10 and the inside of the connector 61, allowing the medium to enter the inside of the valve body 10 or flow out from the inside of the valve body 10. The elastic member is used to return the valve core 62 to its original position.

[0064] During the installation process, the second connecting pipe 121 is welded to the valve body 10, the single joint 50 is welded to the second connecting pipe 121, the first connecting pipe 111 is welded to the pipeline of the air conditioning unit 200, the nut on the end of the pipeline of the air conditioning unit 200 adjacent to the second connecting pipe 121 is screwed into the single joint 50, the second plane 541 is clamped with an external tool, and the nut is tightened onto the single joint 50.

[0065] As shown in Figure 7, this application further provides an air conditioning unit 200 including the above-mentioned stop valve 100.

[0066] The technical features of the above embodiments can be combined in any way, and for the sake of brevity, not all possible combinations of the technical features in the embodiments described above are described. However, as long as these combinations of technical features are inconsistent, they should all be considered to fall within the scope described herein.

[0067] The above embodiments merely illustrate some of the embodiments of this application, and although their descriptions are relatively specific and detailed, they should not be understood as limiting the scope of the claims of this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the spirit of this application, and all of these fall within the scope of protection of this application. Therefore, the scope of protection of the patent of this application should be in accordance with the attached claims.

Claims

1. A valve body made of stainless steel having at least a first opening and a second opening, A valve core, at least a portion of which is provided within the valve body, and which is movable within the valve body so as to connect or block the first opening and the second opening, A second connecting pipe made of stainless steel is provided in the second opening, A single joint connected to the valve body by the second connecting pipe and having a second thread on its outer circumferential wall, Includes, A valve seat is provided inside the valve body, a valve opening is drilled in the valve seat, and the valve opening and the first opening are in communication. An end cover is provided at the opening of one end of the valve body away from the valve seat, the valve core includes a connecting segment and an operating segment connected to each other, and the operating segment is inserted into the end cover. A first sealing member is provided on the outer wall of the connecting segment, and the first sealing member is in contact with the inner wall of the valve body. First projections are provided on both sides of the first sealing member, and these first projections on both sides form a first sealing groove. A third sealing member is provided on the first projection adjacent to the end cover, and the third sealing member is capable of contacting the end cover. A stop valve is provided in which a second sealing member is provided on the side surface of the connecting segment facing the valve opening, and a second projection is provided on the end face of the valve seat facing the valve core, the projection having a thickness that gradually decreases along the direction approaching the valve core, and the second sealing member is capable of contacting the second projection.

2. The stop valve according to claim 1, wherein the single fitting is a stainless steel single fitting.

3. The stop valve according to claim 1, wherein one end of the second connecting pipe enters into the single joint and is connected to the single joint.

4. The stop valve according to claim 1, wherein a third projection is provided on the outer wall of the single joint, the third projection extends radially toward the single joint, the third projection is located between the valve body and the second screw, and the third projection is provided with at least two second planes parallel to each other.

5. The stop valve according to claim 4, wherein the third projection is provided with six of the second planes.

6. The stop valve according to claim 1, wherein the single joint has a through hole, the inner wall of the through hole is provided on a limiting portion, and one end of the second connecting pipe enters the through hole and abuts against the limiting portion.

7. The stop valve according to claim 1, wherein a groove is provided on the end face of one end of the operating segment away from the connecting segment, and at least two parallel first planes are provided within the groove, or at least two parallel first planes are provided on the outer wall of the operating segment.

8. Further including a valve assembly, the valve assembly is connected to the valve body, The valve assembly includes a connector, the connector is connected to the valve body, and the connector serves as a passage through which the medium enters the valve body. The stop valve according to claim 1, wherein the valve assembly further comprises a valve core, a housing, and a fourth sealing member, the valve core being provided within the connecting body and used to communicate or block communication between the inside of the valve body and the inside of the connecting body, the housing being fitted to the outer circumference of the connecting body, and the fourth sealing member being located between the housing and the connecting body and used to engage with the housing and seal the connecting body.

9. The stop valve according to claim 1, wherein the second connecting pipe is connected to the valve body.

10. The stop valve according to claim 1, further comprising a first connecting pipe, the first connecting pipe being provided in the first opening, and the first connecting pipe being connected to the valve body.

11. The stop valve according to claim 1, wherein the single joint and the second connecting pipe are fixed by a method of melting the base material, and / or the second connecting pipe and the valve body are fixed by a method of melting the base material.

12. An air conditioning unit comprising a stop valve according to any one of claims 1 to 11.

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