One-way valve and air conditioner

Abstract

The utility model provides a one-way valve and an air conditioner, and the one-way valve comprises a first connecting pipe fitting which is used for being connected with a first pipeline; the second pipe connecting piece is used for being connected with a second pipeline; the valve body is of an integrally-formed cylindrical structure, and the first pipe connecting piece and the second pipe connecting piece are inserted into the two ends of the valve body correspondingly and fixedly connected with the valve body; the valve element is arranged in the valve body and located between the first pipe connecting piece and the second pipe connecting piece, and the valve element is configured to move between a valve opening position and a valve closing position. According to the one-way valve, the second pipe connecting piece is arranged, so that the valve body can be connected with a second pipeline through the second pipe connecting piece. As the valve body and the second connecting pipe fitting are of a split structure, if the size of the second connecting pipe fitting is not matched with the size of the second pipeline, only the second connecting pipe fitting needs to be replaced, and the whole valve body does not need to be replaced. Compared with the prior art, the second pipe connecting piece is smaller in size, lighter in weight and more convenient to store and carry.

Description

Technical Field

[0001] The utility model relates to the field of air conditioners, and in particular to a one-way valve and an air conditioner. Background Art

[0002] The air conditioning check valve is one of the important components of the air conditioner. It can control the flow direction of the refrigerant and ensure the normal operation of the system. It is an indispensable part of the air conditioning system.

[0003] In some one-way valves, one end of the valve body is connected to the valve port, and the other end directly forms an interface for connecting to the pipeline. This means that the valve body needs to be customized according to the size of different pipelines during manufacturing. If the size of the valve body interface does not match the pipeline size, assembly cannot be achieved. Therefore, valve bodies of different sizes need to be carried during the installation process to adapt to pipelines of different sizes. The valve body itself has a heavy structure and a large volume, making it inconvenient to carry. Utility Model Content

[0004] The utility model aims to at least solve the problem in the prior art that valve bodies with different interface sizes need to be prepared to adapt to pipelines with different sizes, which causes inconvenience in carrying, and proposes a one-way valve and an air conditioner.

[0005] In order to achieve the purpose of the utility model, a one-way valve is provided for connecting between a first pipeline and a second pipeline, the one-way valve comprising: a first connecting piece for connecting to the first pipeline, the first connecting piece having a valve port for communicating with the first pipeline; a second connecting piece for connecting to the second pipeline, the second connecting piece having a flow port for connecting to the second pipeline; a valve body, which is an integrally formed cylindrical structure, the first connecting piece and the second connecting piece are respectively inserted at two ends of the valve body and fixedly connected to the valve body; a valve core is arranged in the valve body and located between the first connecting piece and the second connecting piece, the valve core is configured to be movable between an open valve position and a closed valve position; in the closed valve position, the valve core abuts against a side wall of the valve port to block the valve port; in the open valve position, the valve core is away from the valve port so that the valve port is communicated with the flow port through the inside of the valve body.

[0006] Furthermore, the valve body is integrally formed by a stretching or stamping process.

[0007] Furthermore, the first connecting piece is inserted into the first end of the valve body, and the first connecting piece is fixed to the valve body by welding.

[0008] Further, the first connecting piece has a first end and a second end in the axial direction, the first end of the first connecting piece faces the second connecting piece, and the second end of the first connecting piece faces away from the second connecting piece; the first end of the first connecting piece is provided with the valve port, and the end surface of the second end of the first connecting piece is provided with a first installation groove for installing the first pipeline connection, and the valve port is connected to the first installation groove.

[0009] Furthermore, the end surface of the second end of the first connecting piece is located inside the valve body and forms a gap with the first end of the valve body, so that after the first pipeline is plugged into the first installation groove, the outer wall of the first pipeline, the end surface of the second end of the first connecting piece and the inner circumferential wall of the valve body close to the first end form a first receiving groove for receiving solder.

[0010] Furthermore, the one-way valve also includes: a limit sleeve, which has a first end and a second end axially, the first end of the limit sleeve is connected to the first end of the first connecting piece, the limit sleeve has a limit channel inside, the limit channel is connected to the valve port, the valve core is movably arranged in the limit channel, and the limit channel is provided with a flow hole connected to the limit channel.

[0011] Further, the first end of the first connecting piece is provided with the annular protrusion, the first end of the limiting sleeve is sleeved on the annular protrusion, and the valve port is provided on the annular protrusion and extends to the first mounting groove.

[0012] Furthermore, the second connecting piece is inserted into the second end of the valve body, and the second connecting piece is fixed to the valve body by welding.

[0013] Further, the second connecting piece has a first end and a second end in the axial direction, the first end of the second connecting piece faces the first connecting piece, and the second end of the second connecting piece faces away from the first connecting piece; the first end of the second connecting piece is provided with the flow port, and the end surface of the second end of the second connecting piece is provided with a second installation groove for installing the second pipeline connection, and the flow port is connected to the second installation groove.

[0014] Furthermore, the end surface of the second end of the second connecting piece is located inside the valve body and forms a gap with the second end of the valve body, so that after the second pipeline is plugged into the second installation groove, the outer wall of the second pipeline, the end surface of the second end of the second connecting piece and the inner circumferential wall of the valve body near the second end form a second receiving groove for receiving solder.

[0015] According to a second aspect of the utility model, an air conditioner is also disclosed, comprising the one-way valve mentioned above.

[0016] The one-way valve of the utility model is provided with a second connecting piece, so that the valve body can be connected to the second pipeline through the second connecting piece. Since the valve body and the second connecting piece are of a separate structure, if the size of the second connecting piece does not match the size of the second pipeline, only the second connecting piece can be replaced without replacing the entire valve body. Compared with the prior art, the second connecting piece is smaller in size and lighter in weight, and is more convenient to store and carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a one-way valve according to the first embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of a one-way valve according to Embodiment 2 of the present utility model;

[0019] Figure 3 This is an assembly diagram of the one-way valve, the first pipeline, and the second pipeline of the second embodiment of the utility model;

[0020] List of reference numerals:

[0021] 10. First connecting piece; 11. Valve port; 111. Guide section; 112. Equal diameter section; 113. Guide section; 12. First mounting groove; 13. Annular protrusion; 14. First large diameter section; 15. First small diameter section; 16. First step; 20. Second connecting piece; 21. Flow port; 22. Second mounting groove; 23. Second large diameter section; 24. Second small diameter section; 25. Second step; 30. Valve body; 40. Valve core; 50. Limit sleeve; 51. Limit channel; 52. Flow hole; 53. Limit part; 60. First pipeline; 70. Second pipeline; 80. First accommodating groove; 90. Second accommodating groove; 100. Solder. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the one-way valve and the air conditioner provided by the present invention are described in detail below in conjunction with the accompanying drawings.

[0023] The air conditioning check valve is one of the important components of the air conditioner. It can control the flow direction of the refrigerant and ensure the normal operation of the system. It is an indispensable part of the air conditioning system.

[0024] In some one-way valves, one end of the valve body is connected to the valve port, and the other end is directly turned into an interface for connecting to the pipeline. This means that the valve body needs to be customized according to the size of different pipelines during manufacturing. If the size of the valve body interface does not match the pipeline size and assembly cannot be achieved, the entire valve body needs to be replaced. Therefore, valve bodies with different interface sizes need to be carried during the installation process to adapt to pipelines of different sizes. The valve body itself has a heavy structure and a large volume, which is not convenient to carry.

[0025] In order to solve the above problems, the utility model discloses a one-way valve. The one-way valve can be used in air conditioners and can also be used in other refrigeration or heating equipment.

[0026] Taking the application in air conditioning as an example, the one-way valve can be used to connect between the first pipeline 60 and the second pipeline 70. When the refrigerant in the air conditioner flows from the first pipeline 60 to the second pipeline 70, the one-way valve opens to connect the first pipeline 60 and the second pipeline 70, and the refrigerant can flow from the first pipeline 60 to the second pipeline 70; when the refrigerant flows from the second pipeline 70 to the first pipeline 60, the one-way valve closes to cut off the first pipeline 60 and the second pipeline 70, and the refrigerant cannot flow from the second pipeline 70 to the first pipeline 60.

[0027] like Figures 1 to 2 As shown, the one-way valve includes: a first connecting piece 10 , a second connecting piece 20 , a valve body 30 and a valve core 40 . The first connecting piece 10 is used to connect with the first pipeline 60, and the first connecting piece 10 has a valve port 11 for communicating with the first pipeline 60; the second connecting piece 20 is used to connect with the second pipeline 70, and the second connecting piece 20 has a flow port 21 for communicating with the second pipeline 70; the valve body 30 is an integrally formed cylindrical structure, and the first connecting piece 10 and the second connecting piece 20 are respectively inserted at both ends of the valve body 30 and fixedly connected to the valve body 30; the valve core 40 is arranged in the valve body 30 and is located between the first connecting piece 10 and the second connecting piece 20, and the valve core 40 is configured to be movable between an open valve position and a closed valve position; in the closed valve position, the valve core 40 abuts against the side wall of the valve port 11 to block the valve port 11; in the open valve position, the valve core 40 is away from the valve port 11, so that the valve port 11 is communicated with the flow port 21 through the inside of the valve body 30.

[0028] like Figures 1 to 2 As shown, the first connecting piece 10 is inserted into the first end of the valve body 30, the second connecting piece 20 is inserted into the second end of the valve body 30, and the valve core 40 is arranged in the valve body 30 and located between the first connecting piece 10 and the second connecting piece 20. During assembly, the first pipeline 60 is connected to the first connecting piece 10, and the second pipeline 70 is connected to the second connecting piece 20.

[0029] The one-way valve of the utility model is provided with a second connecting piece 20, so that the valve body 30 can be connected to the second pipeline 70 through the second connecting piece 20. Since the valve body 30 and the second connecting piece 20 are of a separate structure, if the size of the second connecting piece 20 does not match the size of the second pipeline 70, only the second connecting piece 20 can be replaced without replacing the entire valve body 30. Compared with the prior art, the second connecting piece 20 is smaller in size and lighter in weight, and is more convenient to store and carry.

[0030] The one-way valve of the present utility model is further described below in conjunction with specific embodiments.

[0031] like Figure 1 In the first embodiment shown, the valve body 30 is integrally formed by a stretching or stamping process, that is, the valve body 30 can be integrally formed by stamping a plate or integrally formed by stretching a tube. By adopting the above process, the wall thickness of the valve body 30 can be made more uniform, and the strength of the valve body 30 can be made more consistent.

[0032] It should be noted that, in this embodiment, although the valve body 30 is integrally formed by a stretching or stamping process, this is not restrictive. In some other embodiments not shown in the figure, the valve body 30 can also be integrally formed by cold drawing or rolling. The above solutions are all within the protection scope of the present utility model.

[0033] like Figure 1 As shown, the first connecting piece 10 is inserted at the first end of the valve body 30, and the first connecting piece 10 and the valve body 30 are fixed by welding. The second connecting piece 20 is inserted at the second end of the valve body 30, and the second connecting piece 20 and the valve body 30 are fixed by welding.

[0034] The first connecting piece 10 has a first end and a second end in the axial direction, the first end of the first connecting piece 10 faces the second connecting piece 20, and the second end of the first connecting piece 10 faces away from the second connecting piece 20. The first end of the first connecting piece 10 is provided with a valve port 11, and the end surface of the second end of the first connecting piece 10 is provided with a first installation groove 12 for installing the first pipeline 60, and the valve port 11 is connected to the first installation groove 12.

[0035] The first end of the first connecting member 10 is provided with an annular protrusion 13, and the valve port 11 is provided on the annular protrusion 13 and extends to the first mounting groove 12. Figure 1 As shown, the valve port 11 includes: a guide section 111, a constant diameter section 112 and a guide section 113. In the direction from the first end to the second end of the first connecting piece 10, the guide section 111, the constant diameter section 112 and the guide section 113 are sequentially connected. The guide section 111 is used to cooperate with the valve core 40 so that the valve core 40 can better block the valve port 11; the guide section 113 is used to guide the refrigerant to flow into the constant diameter section 112 to reduce the refrigerant resistance.

[0036] like Figure 1 As shown, the one-way valve further includes: a limiting sleeve 50. The limiting sleeve 50 has a first end and a second end in the axial direction. The first end of the limiting sleeve 50 is sleeved on the annular protrusion 13 and fixedly connected. A flow space is formed between the outer peripheral wall of the limiting sleeve 50 and the inner peripheral wall of the valve body 30. The limiting sleeve 50 has a limiting channel 51 inside, which is connected to the valve port 11. The valve core 40 is movably arranged in the limiting channel 51 and cooperates with the radial upper limit of the inner wall of the limiting channel 51. The limiting sleeve 50 is provided with a flow hole 52 connected to the limiting channel 51. The second end of the limiting sleeve 50 is provided with a limiting portion 53 for cooperating with the valve core 40.

[0037] Specifically, the valve core 40 has a closed valve position and an open valve position in the limiting channel 51, and the valve core 40 is movable between the closed valve position and the open valve position. When the refrigerant flows from the first pipeline 60 to the second pipeline 70, the valve core 40 moves from the closed valve position to the open valve position under the push of the refrigerant. At this time, the valve core 40 is separated from the valve port 11, and the first pipeline 60 is connected to the second pipeline 70 through the valve port 11 and the flow port 21. The refrigerant in the first pipeline 60 flows into the second pipeline 70 through the valve port 11, the limiting channel 51, the flow hole 52, and the flow port 21 in turn; when the refrigerant flows from the second pipeline 70 to the first pipeline 60, under the action of the refrigerant, the valve core 40 moves from the open valve position to the closed valve position. At this time, the valve core 40 blocks the valve port 11, so that the fluid in the second pipeline 70 cannot flow to the first pipeline 60.

[0038] In this embodiment, the outer peripheral wall of the first pipe fitting 10 has a first large diameter section 14 and a first small diameter section 15 connected to each other. The first large diameter section 14 extends to the second end of the first pipe fitting 10, and the first small diameter section 15 extends to the first end of the first pipe fitting 10. The connection position of the first large diameter section 14 and the first small diameter section 15 forms a first step 16. The first end of the valve body 30 is sleeved on the first small diameter section 15 and abuts against the first step 16. The surface of the first large diameter section 14 is flush with the surface of the valve body 30. By providing the first large diameter section 14 and the first small diameter section 15, the valve body 30 can be sleeved on the first small diameter section 15 and a limited fit can be achieved, so that the assembly of the valve body 30 is more convenient and accurate. Moreover, since the surface of the first large diameter section 14 is flush with the surface of the valve body 30, the welding process is more convenient.

[0039] Correspondingly, the second connecting piece 20 has a first end and a second end in the axial direction, the first end of the second connecting piece 20 faces the first connecting piece 10, and the second end of the second connecting piece 20 faces away from the first connecting piece 10; the first end of the second connecting piece 20 is provided with a flow port 21, and the end surface of the second end of the second connecting piece 20 is provided with a second installation groove 22 for installing the second pipeline 70, and the flow port 21 is connected to the second installation groove 22.

[0040] In this embodiment, the outer peripheral wall of the second pipe fitting 20 has a second large diameter section 23 and a second small diameter section 24 connected to each other. The second large diameter section 23 extends to the second end of the second pipe fitting 20, and the second small diameter section 24 extends to the first end of the second pipe fitting 20. The connecting position of the second large diameter section 23 and the second small diameter section 24 forms a second step 25. The second end of the valve body 30 is sleeved on the second small diameter section 24 and abuts against the second step 25. The surface of the second large diameter section 23 is flush with the surface of the valve body 30. By providing the second large diameter section 23 and the second small diameter section 24, the valve body 30 can be sleeved on the second small diameter section 24 and a limited fit can be achieved, so that the assembly of the valve body 30 is more convenient and accurate. Moreover, since the surface of the second large diameter section 23 is flush with the surface of the valve body 30, the welding process is more convenient.

[0041] During the production process, different types of second connecting pipe fittings 20 can be produced according to the sizes of commonly used pipelines. The inner diameter of the second mounting groove 22 of each type of second connecting pipe fitting 20 can be different to accommodate second pipelines 70 of different sizes. The sizes of the second small-diameter sections 24 of different types of second connecting pipe fittings 20 are the same. Therefore, even if the second connecting pipe fitting 20 is replaced, the valve body 30 can also be matched.

[0042] like Figure 2 and Figure 3 As shown, the second embodiment of the present utility model also discloses a one-way valve, and its structure is basically the same as that of the first embodiment, except that Figure 2 In the embodiment shown, the end surface of the second end of the first connecting member 10 is located inside the valve body 30 and forms a gap with the first end of the valve body 30. Figure 3 As shown, after the first pipeline 60 is plugged into the first installation groove 12 , the outer wall of the first pipeline 60 , the end surface of the second end of the first connecting piece 10 , and the inner peripheral wall of the valve body 30 near the first end form a first receiving groove 80 for receiving the solder 100 .

[0043] In this embodiment, by setting the end surface of the second end of the first pipe fitting 10 in the valve body 30 and forming a gap with the first end of the valve body 30, when the first pipeline 60 is inserted into the first installation groove 12, the outer wall of the first pipeline 60, the end surface of the second end of the first pipe fitting 10 and the inner peripheral wall of the valve body 30 near the first end form a first receiving groove 80 for receiving the solder 100. In the process of welding the first pipeline 60 to the one-way valve, the solder 100 can contact the first pipeline 60, the first pipe fitting 10 and the valve body 30 at the same time after melting, so that the first pipeline 60, the first pipe fitting 10 and the valve body 30 are welded and fixed at one time, and the sealing between the first pipeline 60 and the first pipe fitting 10, and the sealing between the first pipe fitting 10 and the valve body 30 is completed, thereby improving the assembly efficiency. In addition, by setting the receiving groove, the contact area between the solder 100 and the first pipeline 60, the first pipe fitting 10 and the valve body 30 is also increased, thereby improving the sealing and reliability of the connection.

[0044] Similarly, if Figure 2 As shown, the end surface of the second end of the second connecting member 20 is located inside the valve body 30 and forms a gap with the second end of the valve body 30. Figure 3 As shown, after the second pipeline 70 is plugged into the second installation groove 22 , the outer wall of the second pipeline 70 , the end surface of the second end of the second connecting piece 20 and the inner peripheral wall of the valve body 30 near the second end form a second receiving groove 90 for receiving the solder 100 .

[0045] In this embodiment, by setting the end surface of the second end of the second pipe fitting 20 in the valve body 30 and forming a gap with the second end of the valve body 30, when the second pipeline 70 is inserted into the second installation groove 22, the outer wall of the second pipeline 70, the end surface of the second end of the second pipe fitting 20 and the inner peripheral wall of the valve body 30 near the second end form a second receiving groove 90 for receiving the solder 100. In the process of welding the second pipeline 70 to the one-way valve, the solder 100 can contact the second pipeline 70, the second pipe fitting 20 and the valve body 30 at the same time after melting, so that the second pipeline 70, the second pipe fitting 20 and the valve body 30 are welded and fixed at one time, and the sealing between the second pipeline 70 and the second pipe fitting 20, and the sealing between the second pipe fitting 20 and the valve body 30 is completed, thereby improving the assembly efficiency. In addition, by setting the receiving groove, the contact area between the solder 100 and the second pipeline 70, the second pipe fitting 20 and the valve body 30 is also increased, thereby improving the sealing and reliability of the connection.

[0046] According to a second aspect of the utility model, an air conditioner is also disclosed, comprising the one-way valve mentioned above.

[0047] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A one-way valve, used to connect between a first pipeline (60) and a second pipeline (70), characterized in that: The one-way valve comprises: A first connecting piece (10) for connecting to the first pipeline (60), wherein the first connecting piece (10) has a valve port (11) for communicating with the first pipeline (60); A second connecting piece (20) for connecting to the second pipeline (70), wherein the second connecting piece (20) has a flow port (21) for connecting to the second pipeline (70); The valve body (30) is an integrally formed cylindrical structure, wherein the first connecting piece (10) and the second connecting piece (20) are respectively inserted at two ends of the valve body (30) and fixedly connected to the valve body (30); A valve core (40) is disposed in the valve body (30) and located between the first connecting piece (10) and the second connecting piece (20), and the valve core (40) is configured to be movable between a valve opening position and a valve closing position; In the valve closing position, the valve core (40) abuts against the side wall of the valve opening (11) to block the valve opening (11); In the valve opening position, the valve core (40) is away from the valve port (11), so that the valve port (11) is in communication with the flow port (21) through the interior of the valve body (30).

2. The one-way valve according to claim 1, characterized in that: The valve body (30) is integrally formed by a stretching or stamping process.

3. The one-way valve according to claim 1, characterized in that: The first connecting piece (10) is inserted into the first end of the valve body (30), and the first connecting piece (10) and the valve body (30) are fixed by welding.

4. The one-way valve according to claim 3, characterized in that: The first connecting piece (10) has a first end and a second end in the axial direction, the first end of the first connecting piece (10) faces the second connecting piece (20), and the second end of the first connecting piece (10) faces away from the second connecting piece (20); The first end of the first connecting piece (10) is provided with the valve port (11), and the end surface of the second end of the first connecting piece (10) is provided with a first mounting groove (12) for mounting the first pipeline (60) connection, and the valve port (11) is in communication with the first mounting groove (12).

5. The one-way valve according to claim 4, characterized in that: The end surface of the second end of the first connecting piece (10) is located inside the valve body (30) and forms a gap with the first end of the valve body (30), so that after the first pipeline (60) is plugged into the first installation groove (12), the outer wall of the first pipeline (60), the end surface of the second end of the first connecting piece (10) and the inner peripheral wall of the valve body (30) close to the first end form a first receiving groove (80) for receiving solder (100).

6. The one-way valve according to claim 4, characterized in that: The one-way valve also includes: A limiting sleeve (50) has a first end and a second end in the axial direction, the first end of the limiting sleeve (50) is connected to the first end of the first connecting pipe (10), the limiting sleeve (50) has a limiting channel (51) inside, the limiting channel (51) is communicated with the valve port (11), the valve core (40) is movably arranged in the limiting channel (51), and the limiting channel (51) is provided with a flow hole (52) communicated with the limiting channel (51).

7. The one-way valve according to claim 6, characterized in that: The first end of the first connecting pipe (10) is provided with an annular protrusion (13), the first end of the limiting sleeve (50) is sleeved on the annular protrusion (13), and the valve port (11) is provided on the annular protrusion (13) and extends to the first mounting groove (12).

8. The one-way valve according to claim 1, characterized in that: The second connecting piece (20) is inserted into the second end of the valve body (30), and the second connecting piece (20) and the valve body (30) are fixed by welding.

9. The one-way valve according to claim 8, characterized in that: The second connecting piece (20) has a first end and a second end in the axial direction, the first end of the second connecting piece (20) faces the first connecting piece (10), and the second end of the second connecting piece (20) faces away from the first connecting piece (10); The first end of the second connecting pipe (20) is provided with the flow port (21), and the end surface of the second end of the second connecting pipe (20) is provided with a second installation groove (22) for installing the second pipeline (70) connection, and the flow port (21) is in communication with the second installation groove (22).

10. The one-way valve according to claim 9, characterized in that: The end surface of the second end of the second connecting piece (20) is located inside the valve body (30) and forms a gap with the second end of the valve body (30), so that after the second pipeline (70) is plugged into the second installation groove (22), the outer wall of the second pipeline (70), the end surface of the second end of the second connecting piece (20) and the inner peripheral wall of the valve body (30) close to the second end form a second receiving groove (90) for receiving solder (100).

11. An air conditioner, characterized in that: The one-way valve comprises the one-way valve according to any one of claims 1 to 10.

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