Stop valve and air conditioning system

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 Application 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 in particular, 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 provided at least partially inside 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 surrounded by the inner wall of the valve body, the outer wall of the valve seat and the first connecting pipe. 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 by being surrounded by the step surface of the first step, the inner wall of the valve body, and the end surface of the first connection pipe close to the valve seat.

[0008] In one embodiment, the valve seat includes a first fixing portion and a first connection portion. The first fixing portion is located inside the valve body and connected to the valve body. One end of the first connection portion is connected to the first fixing portion, and the other end of the first connection portion protrudes from the first opening. Here, the outer diameter of the first connection portion is smaller than the outer diameter of the first fixing portion, and at least a part of the first connection pipe is located between the first connection 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 by being surrounded by the step surface of the second step, the outer wall of the valve seat, and the end surface of the first connection pipe close to the valve body.

[0010] In one embodiment, the valve body includes a second fixing portion and a second connection portion. The second fixing portion is connected to the outer wall of the valve seat. One end of the second connection portion is connected to the second fixing portion. Here, the inner diameter of the second fixing portion is smaller than the inner diameter of the second connection portion, and at least a part of the first connection pipe is located between the second connection portion and the valve seat.

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

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

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

[0014] In one embodiment, a second opening is further formed in the valve body, 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 or cut off the first opening and the second opening.

[0015] This application further provides an air conditioning system including the above-described stop valve.

[0016] For a more concise understanding of other features, objects, and advantages of this application, the details of one or more embodiments of this application are referred to in the following drawings and descriptions.

Brief Description of the Drawings

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings 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 some embodiments of this application, and it is obvious that those skilled in the art can obtain other drawings based on these drawings without creative efforts.

[0018]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

[0019] The meanings of the reference numerals in the drawings are as follows. 100 Stop valve, 10 Valve body, 11 First opening, 12 Second opening, 13 Second step, 14 Second fixing part, 15 Second connection part, 16 Guide part, 17 Third step, 20 Valve seat, 21 First step, 22 First fixing part, 23 First connection part, 30 First connection pipe, 31 Chamfer, 40 Second connection 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, with reference to the drawings in the embodiments of the present application, the technical aspects in the embodiments of the present application will be described clearly and completely. However, it is obvious that the described embodiments are only some of the embodiments of the present application, not all of the 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 intervening assemblies. When an assembly is considered to be "connected" to another assembly, it may be directly connected to the other assembly, or intervening assemblies 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 or implicitly include at least one of such features. 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 may mean that the first feature and the second feature are in direct contact, or that the first feature and the second feature are in indirect contact through an intermediate medium. Further, the statement that the first feature is "above", "above", or "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", or "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 shall 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 one or more of any and all combinations 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 problems, referring to FIG. 1, the present application provides a stop valve 100, and the stop valve 100 includes a valve body 10, a valve seat 20, a first connection pipe 30, and a second connection pipe 40.

[0028] The valve body 10 is provided with a first opening 11 and a second opening 12. At least a part of the valve seat 20 is provided inside 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 the first connection pipe 30 is located between the valve body 10 and the valve seat 20. The first opening 11 realizes communication with the external air-conditioning pipeline through the first connection pipe 30. A part of the second connection pipe 40 is inserted into the second opening 12 and welded and fixed to the valve body 10. The second opening 12 realizes communication with the external air-conditioning pipeline through the second connection pipe 40. When the stop valve 100 is opened, the medium can enter the valve body 10 through the first connection pipe 30 and flow out through the second connection pipe 40. Or, the medium can enter the valve body 10 through the second connection pipe 40 and flow out through the first connection pipe 30.

[0029] In addition, 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. The welding material in the welding material groove 50 is usually a welding ring. In this embodiment, one welding ring is arranged in the welding material groove 50, and this welding ring melts to realize the mutual connection between the valve body 10, the valve seat 20, and the first connection pipe 30.

[0030] As can be seen, the stop valve 100 provided in this application can achieve fixed connection among the valve body 10, the valve seat 20, and the first connection pipe 30 by providing only one welding ring at one location. In the related art, it is necessary to provide one welding ring between the valve seat and the connection pipe and another welding ring between the valve body and the valve seat to realize the connection of the valve body, the valve seat, and the connection pipe. Compared with this, this application greatly saves the usage amount of welding materials, improves the assembly efficiency, and thus reduces the cost of the stop valve 100. Also, it avoids the deformation possibility of the stop valve 100 due to multiple weldings and improves the structural stability of the stop valve 100.

[0031] At the same time, compared with the stop valve provided in this application, when the cross-sectional area of the first connection pipe 30 is constant in the related art, in the stop valve in the related art, the valve seat is fitted on the outside of the first connection pipe and the valve body is fitted on the outside of the valve seat. On the other hand, a part of the valve seat 20 of this application enters into the first connection pipe 30, so that compared with the valve seat in the related art, the radial dimension of the valve seat 20 is reduced to save materials. Also, the valve body 10 of this application is fitted to the valve seat 20, and the dimension of the valve body 10 also becomes smaller accordingly, further saving materials and reducing the overall manufacturing and processing cost of the stop valve 100.

[0032] Embodiment 1 Referring to FIGS. 1 and 2, a first step 21 is formed on the outer wall of the valve seat 20. A welding material groove 50 is formed and surrounded by the step surface of the first step 21, the inner wall of the valve body 10, and the end surface of the first connection pipe 30 close to the valve seat 20. One welding ring is provided in the welding material groove 50. That is, in this application, by providing only one welding ring at one location, namely the welding material groove 50, the fixed connection among the valve body 10, the valve seat 20, and the first connection pipe 30 is realized, greatly saving the usage amount of welding materials, improving the assembly efficiency, and thus reducing the cost of the stop valve 100.

[0033] The valve seat 20 includes a first fixing portion 22 and a first connecting portion 23. The first fixing portion 22 is located within the valve body 10 and connected to the valve body 10. The connection between the first fixing 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 fixing 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 fixing portion 22. Therefore, the above-mentioned first step 21 is formed at the connection location between the first connecting portion 23 and the first fixing portion 22. The first connecting pipe 30 is at least partially located between the first connecting portion 23 and the valve body 10, and the first connecting pipe 30 is fitted to the first connecting portion 23, so that the dimensions of the valve body 10 and the valve seat 20 can be reduced. Furthermore, the material of the stop valve 100 can be saved, and the cost of the stop valve 100 can be reduced.

[0034] Embodiment 2 Referring to FIGS. 4 and 5, a second step 13 is formed on the inner wall of the valve body 10. A welding material groove 50 is formed and surrounded by the step surface of the second step 13, the outer wall of the valve seat 20, and the end surface of the first connecting pipe 30 close to the valve body 10. One welding ring is provided in the welding material groove 50. That is, in this application, only one welding ring is provided at one location called the welding material groove 50 to realize the fixed connection among the valve body 10, the valve seat 20, and the first connecting pipe 30, greatly saving the amount of welding material used, improving the assembly efficiency, and thus 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, and the second fixing portion 14 is connected to the outer wall of the valve seat 20. By connecting the second fixing portion 14 and the outer wall of the valve seat 20, the strength of the check valve 100 can be further improved. 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. Therefore, the above-mentioned second step 13 is formed at the connection location between the second fixing portion 14 and the second connecting portion 15. The first connecting pipe 30 is at least partially located between the second connecting portion 15 and the valve seat 20, and a part of the first connecting pipe 30 is fitted to the valve seat 20, so that the dimensions of the valve body 10 and the valve seat 20 can be reduced. Furthermore, the material of the check valve 100 can be saved, and the cost of the check valve 100 can be reduced.

[0036] In one embodiment of the present application, there is a gap 60 for accommodating welding material between the inner wall of the valve body 10 and one side of the first connecting pipe 30 close to the valve body 10. The welding material in the welding material groove 50 melts by 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 welding more firm, and improving the stability of the connection.

[0037] In another embodiment of the present application, there is a gap 60 for accommodating welding material between the outer wall of the valve seat 20 and one side of the first connecting pipe 30 close to the valve seat 20. The welding material in the welding material groove 50 melts by 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 welding more firm, and improving the stability of the connection.

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

[0039] Furthermore, referring to FIGS. 1 and 3, one end of the first connection pipe 30 close to the valve body 10 has a chamfer 31. By providing the chamfer 31, it becomes easier to guide the welding material to flow into the gap 60 between the valve body 10 and the first connection pipe 30 and the gap 60 between the first connection pipe 30 and the valve seat 20, and more welding material can be accommodated at the chamfer 31, further improving the strength of the welding.

[0040] The valve body 10 further includes a guide portion 16, and the guide portion 16 is located at one end of the valve body 10 close to the first connection pipe 30. The guide portion 16 can perform a guiding function. 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 close to the first connection pipe 30. The inclined surface makes it easy to guide the insertion of the first connection pipe 30 into the valve body 10, preventing the first connection pipe 30 and the valve body 10 from colliding and being unable to be inserted smoothly, and improving the assembly efficiency. Of course, in other embodiments, the guide portion 16 may be other structures having a guiding function as long as the same effect can be achieved.

[0041] Referring to FIG. 1, the stop valve 100 further includes a valve core 70. The valve core 70 is located within the valve body 10, and the valve core 70 is movable within the valve body 10 along its axial direction so as to communicate or cut off the first opening 11 and the second opening 12. One end of the valve core 70 close 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 abuts against 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 communicated, 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. The intersection line of the third step 17 can be engaged with the outer peripheral side of the valve core 70 to achieve line sealing. Specifically, in the present application, there are a plurality of third steps 17, and the plurality of third steps 17 form a stepped surface on the inner wall of the valve body 10. One side of the valve core 70 close to the third step 17 has a second tapered surface 72. The intersection line between the second tapered surface 72 and the stepped surface forms a linear contact, that is, the intersection line of the plurality of third steps 17 and the second tapered surface 72 form a line seal. Due to the linear contact, the second tapered surface 72 and the intersection line of the third step 17 form a linear pressing engagement. On the one hand, the restriction of the valve core 70 is realized. On the other hand, due to the linear contact, the hard seal between the valve core 70 and the valve body 10 is realized, and the sealing performance between the valve core 70 and the valve body 10 is further improved by the line seals at multiple locations.

[0043] Referring to FIG. 6, the present application further provides an air conditioning system 200 including the above-described stop valve 100. The stop valve 100 is attached to the medium passage of the air conditioning system 200, controls the blocking and throttling of the passage, and is used to replenish the medium to the air conditioning system 200.

[0044] Each technical feature of the above embodiments can be arbitrarily combined. For the sake of brevity of description, not all possible combinations of each technical feature in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should all be regarded as within the scope described in this specification.

[0045] The above embodiments merely illustrate some embodiments of the present application. Although the description is relatively specific and detailed, it should not be understood as limiting the scope of the claims of the present application. It must be pointed out that those skilled in the art can make some modifications and improvements on the premise of not departing from the spirit of the present application, and all of these are included in the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be in accordance with the appended claims.

Claims

1. A valve body having at least a first opening formed therein; A valve seat provided at least partially inside the valve body through the first opening; A first connection pipe fitted to at least a part of the valve seat and having at least a part located between the valve body and the valve seat, wherein a welding material groove is formed by the inner wall of the valve body, the outer wall of the valve seat, and the first connection pipe, and the valve body, the valve seat, and the first connection pipe are welded to each other by the welding material in the welding material groove. A stop valve.

2. A first step is formed on the outer wall of the valve seat, and the welding material groove is formed by the step surface of the first step, the inner wall of the valve body, and the end surface of the first connection pipe adjacent to the valve seat. The stop valve according to claim 1.

3. The valve seat includes: A first fixing portion located inside the valve body and connected to the valve body; A first connection portion having one end connected to the first fixing portion and the other end protruding from the first opening, wherein the outer diameter of the first connection portion is smaller than the outer diameter of the first fixing portion, and the first connection pipe has at least a part located between the first connection portion and the valve body. The stop valve according to claim 2.

4. A second step is formed on the inner wall of the valve body, and the welding material groove is formed by the step surface of the second step, the outer wall of the valve seat, and the end surface of the first connection pipe adjacent to the valve body. The stop valve according to claim 1.

5. The valve body includes: A second fixing portion connected to the outer wall of the valve seat; A second connection portion having one end connected to the second fixing portion, wherein the inner diameter of the second fixing portion is smaller than the inner diameter of the second connection portion, and the first connection pipe has at least a part located between the second connection portion and the valve seat. The stop valve according to claim 4.

6. There is a gap for accommodating welding material between the inner wall of the valve body and one side of the first connection pipe adjacent to the valve body, and / or there is a gap for accommodating welding material between the outer wall of the valve seat and one side of the first connection pipe adjacent to the valve seat. The stop valve according to claim 1.

7. One end of the first connection pipe adjacent to the valve body has a chamfer. The stop valve according to claim 1.

8. The valve body further includes: A guide portion located at one end of the valve body adjacent to the first connection pipe. The stop valve according to claim 1.

9. A second opening is further formed in the valve body, and the check valve further includes a valve core that is located within the valve body and is movable within the valve body along its axial direction so as to communicate or block the first opening and the second opening. The check valve according to claim 1.

10. An air conditioning system including the check valve according to any one of claims 1 to 9.

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