Stop valves and air conditioning systems

Abstract

A stop valve and an air conditioning system. The stop valve includes a valve body (10), a valve seat (20), and a first connection pipe (30). At least a first opening (11) is formed in the valve body (10). At least a part of the valve seat (20) is provided in the valve body (10) through the first opening (11). The first connection pipe (30) is fitted to at least a part of the valve seat (20), and at least a part of the first connection pipe (30) is located between the valve body (10) and the valve seat (20). Here, a welding material groove (50) is formed by the inner wall of the valve body (10), the outer wall of the valve seat (20), and the first connection pipe (30). The valve body (10), the valve seat (20), and the first connection pipe (30) are welded to each other by the welding material in the welding material groove (50).

Description

Technical Field

[0001] Related Applications This application claims the priority of a Chinese patent application with an application number of 202221397452.4 and a title of "Stop Valve and Air Conditioning System", which was filed on June 1, 2022, and the full text is incorporated herein by reference.

[0002] This application relates to the technical field of cooling, and particularly to a stop valve and an air conditioning system.

Background Art

[0003] A stop valve is used in an air conditioning system to play an important role of blocking and throttling the medium in the pipeline where it is located.

[0004] The structure of the stop valve in the related art includes a valve body, a valve seat and a connecting pipe. The valve seat is attached to the opening of the valve body and welded to the valve body. By inserting a part of the connecting pipe into the valve seat and welding it to the valve seat, a fixed connection of the three of the valve body, the valve seat and the connecting pipe is realized. However, the structure of the stop valve in the related art has many welding processes and a large amount of welding materials used, so the cost of the stop valve increases.

Summary of the Invention

[0005] According to various embodiments of the present application, a stop valve and an air conditioning system are provided.

[0006] A stop valve, comprising a valve body, a valve seat and a first connecting pipe. At least a first opening is drilled in the valve body. The valve seat is at least partially provided in the valve body through the first opening. The first connecting pipe is fitted to at least a part of the valve seat, and at least a part of the first connecting pipe is located between the valve body and the valve seat. Here, a welding material groove is formed by the inner wall of the valve body, the outer wall of the valve seat and the first connecting pipe, and the valve body, the valve seat and the first connecting pipe are welded to each other by the welding material in the welding material groove.

[0007] In one embodiment, a first step is formed on the outer wall of the valve seat, and a welding material groove is formed surrounded by the stepped surface of the first step, the inner wall of the valve body, and the end face of the first connecting pipe adjacent to the valve seat.

[0008] In one embodiment, the valve seat includes a first fixed portion and a first connecting portion, the first fixed portion being located inside the valve body and connected to the valve body, one end of the first connecting portion being connected to the first fixed portion, and the other end of the first connecting portion protruding from a first opening, wherein the outer diameter of the first connecting portion is smaller than the outer diameter of the first fixed portion, and at least a portion of the first connecting pipe is located between the first connecting portion and the valve body.

[0009] In one embodiment, a second step is formed on the inner wall of the valve body, and a welding material groove is formed surrounded by the stepped surface of the second step, the outer wall of the valve seat, and the end face of the first connecting pipe that is close to the valve body.

[0010] In one embodiment, the valve body includes a second fixing portion and a second connecting portion, the second fixing portion being connected to the outer wall of the valve seat, and one end of the second connecting portion being connected to the second fixing portion, wherein the inner diameter of the second fixing portion is smaller than the inner diameter of the second connecting portion, and the first connecting pipe is positioned at least partially between the second connecting portion and the valve seat.

[0011] In one embodiment, a gap exists between the inner wall of the valve body and one side of the first connecting pipe adjacent to the valve body for accommodating welding material, and / or a gap exists between the outer wall of the valve seat and one side of the first connecting pipe adjacent to the valve seat for accommodating welding material.

[0012] In one embodiment, the end of the first connecting pipe that is close to the valve body has a chamfer.

[0013] In one embodiment, the valve body further includes a guide portion located at one end adjacent to the first connecting pipe of the valve body.

[0014] In one embodiment, the valve body is further provided with a second opening, and the stop valve further includes a valve core located within the valve body and movable within the valve body along its axial direction so as to communicate with or block the first opening and the second opening.

[0015] This application further provides an air conditioning system including the aforementioned shut-off valve.

[0016] Details of one or more embodiments of this application are referenced in the following drawings and description in order to provide a more concise understanding of other features, purposes, and advantages of this application. [Brief explanation of the drawing]

[0017] To more clearly describe the technical aspects of the embodiments or related technologies of this application, the following drawings, which are necessary for use in the description of the embodiments or related technologies, are briefly introduced below. However, the drawings in the following description are only a few embodiments of this application, and it will be obvious to those skilled in the art that other drawings can be obtained based on these drawings without any creative effort.

[0018] [Figure 1] This is a cross-sectional view of the stop valve of Embodiment 1 provided in this application. [Figure 2] This is a magnified view of area A in Figure 1. [Figure 3] This is a magnified view of area B in Figure 1. [Figure 4] This is a cross-sectional view of the stop valve of Embodiment 2 provided in this application. [Figure 5] This is a magnified view of area C in Figure 4. [Figure 6] This is a schematic diagram of the air conditioning system provided in this application.

[0019] The meaning of each symbol in the diagram is as follows: 100 Stop valve, 10 Valve body, 11 First opening, 12 Second opening, 13 Second step, 14 Second fixing part, 15 Second connecting part, 16 Guide part, 17 Third step, 20 Valve seat, 21 First step, 22 First fixing part, 23 First connecting part, 30 First connecting pipe, 31 Chamfer, 40 Second connecting pipe, 50 Welding material groove, 60 Gap, 70 Valve core, 71 First tapered surface, 72 Second tapered surface, 200 Air conditioning system.

Embodiments for Carrying Out the Invention

[0020] Hereinafter, referring to the drawings in the embodiments of the present application, the technical aspects in the embodiments of the present application will be clearly and completely described. It is clear that the described embodiments are only some of the embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present application.

[0021] It should be noted that when an assembly is "fixed" or "provided" to another assembly, it may be directly fixed to the other assembly, or there may be an intervening assembly. When an assembly is considered to be "connected" to another assembly, it may be directly connected to the other assembly, or an intervening assembly may exist simultaneously. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of the present application are for illustrative purposes only and do not represent the only embodiment.

[0022] Furthermore, the terms "first" and "second" are for illustrative purposes only and should not be understood as indicating or implying relative importance or implicitly specifying the number of the indicated technical features. Thus, the features limited by "first" and "second" can explicitly include at least one of the features or implicitly include them. In the description of the present application, "a plurality" means at least two, for example, two, three, etc., unless there is a clear and specific limitation.

[0023] In this application, unless there are specific and clear regulations and limitations, the statement that the first feature is "above" or "below" the second feature means that the first feature and the second feature may be in direct contact or in indirect contact through an intermediate medium. Further, the statement that the first feature is "above", "above and on the upper side" of the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply that the horizontal height of the first feature is higher than that of the second feature. The statement that the first feature is "below", "below and on the lower side" of the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply that the horizontal height of the first feature is lower than that of the second feature.

[0024] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as commonly understood by those skilled in the art of this application. The terms used in the specification of this application are only for the purpose of explaining specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more of the related listed items.

[0025] Referring to FIGS. 1 and 6, this application provides a stop valve 100 attached to an air conditioning system 200. In the air conditioning system 200, the stop valve 100 is used to play an important role of blocking and throttling the medium in the pipeline where it is located.

[0026] The structure of the stop valve in the related art includes a valve body, a valve seat and a connecting pipe. The valve seat is attached to the opening of the valve body and welded to the valve body. By inserting a part of the connecting pipe into the valve seat and welding it to the valve seat, a fixed connection among the valve body, the valve seat and the connecting pipe is realized. However, the structure of the stop valve in the related art has many welding processes and a large amount of welding materials used, so the cost of the stop valve increases.

[0027] To solve the above-mentioned problems, referring to Figure 1, this application provides a stop valve 100, which includes a valve body 10, a valve seat 20, a first connecting pipe 30, and a second connecting pipe 40.

[0028] The valve body 10 has a first opening 11 and a second opening 12. The valve seat 20 is provided inside the valve body 10, at least a portion of which is through the first opening 11. The first connecting pipe 30 is fitted to at least a portion of the valve seat 20 and is located between the valve body 10 and the valve seat 20. The first opening 11 communicates with the external air conditioning pipeline via the first connecting pipe 30. The second connecting pipe 40 is partially inserted into the second opening 12 and welded to the valve body 10, and the second opening 12 communicates with the external air conditioning pipeline via the second connecting pipe 40. When the stop valve 100 is opened, the medium can enter the valve body 10 through the first connecting pipe 30 and flow out through the second connecting pipe 40. Alternatively, the medium can enter the valve body 10 through the second connecting pipe 40 and flow out through the first connecting pipe 30.

[0029] Furthermore, a welding material groove 50 is formed by the inner wall of the valve body 10, the outer wall of the valve seat 20, and the first connecting pipe 30, and the valve body 10, valve seat 20, and first connecting pipe 30 are welded to each other by the welding material in the welding material groove 50. The welding material in the welding material groove 50 is usually a welding ring. In this embodiment, one welding ring is placed in the welding material groove 50, and this welding ring melts to connect the valve body 10, valve seat 20, and first connecting pipe 30 to each other.

[0030] The stop valve 100 provided in this application achieves a fixed connection between the valve body 10, valve seat 20, and first connecting pipe 30 by providing only one welded ring in one location. Compared to related technologies, where one welded ring is provided between the valve seat and the connecting pipe, and another welded ring is provided between the valve body and the valve seat to achieve connection between the valve body, valve seat, and connecting pipe, this application reduces the cost of the stop valve 100 by significantly saving on the amount of welding material used and improving assembly efficiency. Furthermore, it avoids the possibility of deformation of the stop valve 100 due to multiple welding processes and improves the structural stability of the stop valve 100.

[0031] At the same time, in the stop valves of related technologies, when the cross-sectional area of ​​the first connecting pipe 30 is constant, the valve seat of the stop valve of related technologies is fitted to the outside of the first connecting pipe and the valve body is fitted to the outside of the valve seat. On the other hand, the valve seat 20 of the present application has a portion that extends into the first connecting pipe 30, thereby reducing the radial dimension of the valve seat 20 and saving material compared to the valve seat of related technologies. Furthermore, the valve body 10 of the present application is fitted into the valve seat 20, and the dimensions of the valve body 10 are also reduced accordingly, further saving material and reducing the overall manufacturing cost of the stop valve 100.

[0032] Example 1 Referring to Figures 1 and 2, a first step 21 is formed on the outer wall of the valve seat 20, and a welding material groove 50 is formed surrounded by the stepped surface of the first step 21, the inner wall of the valve body 10, and the end face of the first connecting pipe 30 adjacent to the valve seat 20. By providing one welding ring within the welding material groove 50, that is, by providing only one welding ring in one location, the welding material groove 50, a fixed connection between the valve body 10, the valve seat 20, and the first connecting pipe 30 is achieved, significantly reducing the amount of welding material used and improving assembly efficiency, thereby reducing the cost of the stop valve 100.

[0033] The valve seat 20 includes a first fixed portion 22 and a first connecting portion 23, the first fixed portion 22 being located inside the valve body 10 and connected to the valve body 10. The connection between the first fixed portion 22 and the valve body 10 further improves the strength of the stop valve 100. One end of the first connecting portion 23 is connected to the first fixed portion 22, and the other end of the first connecting portion 23 protrudes from the first opening 11. Here, the outer diameter of the first connecting portion 23 is smaller than the outer diameter of the first fixed portion 22, and therefore the above-mentioned first step 21 is formed at the connection point between the first connecting portion 23 and the first fixed portion 22. The first connecting pipe 30 is located at least in part between the first connecting portion 23 and the valve body 10, and the first connecting pipe 30 is fitted into the first connecting portion 23, thereby reducing the dimensions of the valve body 10 and the valve seat 20, further saving material for the stop valve 100 and reducing the cost of the stop valve 100.

[0034] Example 2 Referring to Figures 4 and 5, a second step 13 is formed on the inner wall of the valve body 10, and a welding material groove 50 is formed surrounded by the stepped surface of the second step 13, the outer wall of the valve seat 20, and the end face of the first connecting pipe 30 that is close to the valve body 10. By providing one welding ring in the welding material groove 50, that is, by providing only one welding ring in one location, the welding material groove 50, a fixed connection between the valve body 10, the valve seat 20, and the first connecting pipe 30 is achieved, significantly reducing the amount of welding material used and improving assembly efficiency, thereby reducing the cost of the stop valve 100.

[0035] The valve body 10 includes a second fixing portion 14 and a second connecting portion 15, the second fixing portion 14 being connected to the outer wall of the valve seat 20. The connection between the second fixing portion 14 and the outer wall of the valve seat 20 further improves the strength of the stop valve 100. One end of the second connecting portion 15 is connected to the second fixing portion 14. Here, the inner diameter of the second fixing portion 14 is smaller than the inner diameter of the second connecting portion 15, and therefore, the above-mentioned second step 13 is formed at the connection point between the second fixing portion 14 and the second connecting portion 15. The first connecting pipe 30 is positioned at least in part between the second connecting portion 15 and the valve seat 20, and a portion of the first connecting pipe 30 is fitted to the valve seat 20, thereby reducing the dimensions of the valve body 10 and the valve seat 20, further saving material for the stop valve 100, and lowering the cost of the stop valve 100.

[0036] In one embodiment of this application, a gap 60 for accommodating welding material exists between the inner wall of the valve body 10 and one side of the first connecting pipe 30 that is close to the valve body 10. The welding material in the welding material groove 50 melts during the welding process and flows into the gap 60 between the valve body 10 and the first connecting pipe 30, thereby increasing the welding area between the valve body 10 and the first connecting pipe 30, making the weld more robust and improving the stability of the connection.

[0037] In another embodiment of this application, a gap 60 for accommodating welding material exists between the outer wall of the valve seat 20 and one side of the first connecting pipe 30 adjacent to the valve seat 20. The welding material in the welding material groove 50 melts during the welding process and flows into the gap 60 between the first connecting pipe 30 and the valve seat 20, thereby increasing the welding area between the first connecting pipe 30 and the valve seat 20, making the weld more robust and improving the stability of the connection.

[0038] In yet another embodiment of this application, a gap 60 for accommodating welding material exists between the inner wall of the valve body 10 and one side of the first connecting pipe 30 adjacent to the valve body 10, and a gap 60 for accommodating welding material exists between the outer wall of the valve seat 20 and one side of the first connecting pipe 30 adjacent to the valve seat 20. The welding material in the welding material groove 50 melts during the welding process and flows into the gap 60 between the valve body 10 and the first connecting pipe 30 and the gap 60 between the first connecting pipe 30 and the valve seat 20, thereby increasing the welding area, making the weld more robust, and improving the stability of the connection.

[0039] Furthermore, referring to Figures 1 and 3, the first connecting pipe 30 has a chamfer 31 at one end close to the valve body 10. The installation of the chamfer 31 makes it easier to guide the welding material to flow into the gap 60 between the valve body 10 and the first connecting pipe 30 and the gap 60 between the first connecting pipe 30 and the valve seat 20, and also allows the chamfer 31 to accommodate more welding material, further improving the strength of the weld.

[0040] The valve body 10 further includes a guide portion 16, which is located at one end of the valve body 10 adjacent to the first connecting pipe 30. The guide portion 16 can perform a guiding function, and specifically, in this embodiment, the guide portion 16 is an inclined surface, and an inclined surface is formed at one end of the valve body 10 adjacent to the first connecting pipe 30. The inclined surface facilitates the insertion of the first connecting pipe 30 into the valve body 10, preventing the first connecting pipe 30 and the valve body 10 from colliding and preventing smooth insertion, thereby improving assembly efficiency. Of course, in other embodiments, the guide portion 16 may be any other structure having a guiding function, as long as the same effect can be achieved.

[0041] Referring to Figure 1, the stop valve 100 further includes a valve core 70, which is located within the valve body 10 and is movable within the valve body 10 along its axial direction to connect or block the first opening 11 and the second opening 12. One end of the valve core 70 adjacent to the valve seat 20 has a first tapered surface 71 that engages with the valve seat 20. When the first tapered surface 71 of the valve core 70 contacts the valve seat 20, the passage between the first opening 11 and the second opening 12 is blocked, and the stop valve 100 is closed. When the first tapered surface 71 of the valve core 70 moves away from the valve seat 20, the passage between the first opening 11 and the second opening 12 is connected, and the stop valve 100 is opened.

[0042] A third step 17 is provided on the inner wall of the valve body 10 away from the first connecting pipe 30, and the intersection lines of the third steps 17 engage with the outer circumference of the valve core 70 to achieve linear sealing. Specifically, in this application, there are multiple third steps 17, and the multiple third steps 17 form a stepped surface on the inner wall of the valve body 10. The valve core 70 has a second tapered surface 72 on one side close to the third steps 17, and the intersection lines of the second tapered surface 72 and the stepped surface form linear contact, that is, the intersection lines of the multiple third steps 17 and the second tapered surface 72 form linear sealing. Linear contact creates a linear pressing engagement between the intersection line of the second tapered surface 72 and the third step 17, thereby restricting the valve core 70 on the one hand, and achieving a hard seal between the valve core 70 and the valve body 10 through linear contact, and further improving the sealing performance between the valve core 70 and the valve body 10 through linear sealing at multiple locations.

[0043] Referring to Figure 6, the present application further provides an air conditioning system 200 including the stop valve 100 described above. The stop valve 100 is installed in the media passage of the air conditioning system 200 and is used to control the blocking and throttling of the passage and to replenish the media in the air conditioning system 200.

[0044] 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.

[0045] 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 having at least a first opening, A valve seat, at least a portion of which is provided within the valve body through the first opening, The system includes a first connecting pipe which is fitted to at least a portion of the valve seat and whose portion is located between the valve body and the valve seat, Here, a second step is formed on the inner wall of the valve body, and a welding material groove is formed surrounded by the stepped surface of the second step, the outer wall of the valve seat, and the end face of the first connecting pipe adjacent to the valve body. A stop valve in which the valve body, the valve seat, and the first connecting pipe are welded to each other by welding material in the welding material groove, which is guided by the chamfer so as to flow into these gaps.

2. The stop valve according to claim 1, wherein a first step is formed on the outer wall of the valve seat, and the welding material groove is formed surrounded by the stepped surface of the first step, the inner wall of the valve body, and the end face of the first connecting pipe adjacent to the valve seat.

3. The aforementioned valve seat is A first fixing part located inside the valve body and connected to the valve body, It includes a first connecting portion, one end of which is connected to the first fixing portion and the other end of which protrudes from the first opening, The stop valve according to claim 2, wherein the outer diameter of the first connecting portion is smaller than the outer diameter of the first fixing portion, and at least a portion of the first connecting pipe is located between the first connecting portion and the valve body.

4. The valve body is, A second fixing portion connected to the outer wall of the valve seat, It includes a second connecting portion, one end of which is connected to the second fixing portion, The stop valve according to claim 1, wherein the inner diameter of the second fixed portion is smaller than the inner diameter of the second connecting portion, and at least a portion of the first connecting pipe is located between the second connecting portion and the valve seat.

5. The valve body is, The stop valve according to claim 1, further comprising a guide portion located at one end of the valve body adjacent to the first connecting pipe.

6. The stop valve according to claim 1, wherein the valve body is further provided with a second opening, and the stop valve further includes a valve core located within the valve body and movable within the valve body along its axial direction so as to communicate with or block the first opening and the second opening.

7. An air conditioning system comprising a shut-off valve according to any one of claims 1 to 6.

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