JP7482318B2 - One-way valves and air conditioning equipment - Google Patents

Description

RELATED APPLICATIONS This application claims priority to a Chinese patent application filed on September 8, 2020, bearing application number 202021949418.4 and entitled "One-way Valve and Air Conditioning Equipment", the entire contents of which are incorporated herein by reference.

This application relates to the technical field of valves, and in particular to one-way valves and air conditioning equipment.

In the design process of air conditioners, a spring-loaded one-way valve is provided in the exhaust pipe of the compressor to prevent the rebound of the airflow discharged after the air conditioner is stopped from affecting the compressor of the air conditioner. A spring-loaded one-way valve used at the exhaust end of a compressor usually includes a valve body, a valve cover, a first connecting pipe, and a second connecting pipe, and the valve body and the valve cover, the valve body and the first connecting pipe, and the valve cover and the second connecting pipe are usually connected by welding. Weld strength is easily reduced at the welded parts, and there is a risk of the flow medium leaking from inside the valve body.

In view of this, it is necessary to provide a one-way valve and an air conditioning device that solves the problem in the prior art that there is a risk of flow medium leaking from a spring-type one-way valve due to a decrease in welding strength.

The present application provides a one-way valve including a valve body, a valve seat, a piston, a support member, and an elastic member. The valve body is provided with a valve chamber. The valve seat is fixedly provided in the valve chamber and sealingly connected to the inner wall of the valve chamber. The valve seat divides the valve chamber into a first chamber and a second chamber. The valve seat is provided with a first passage communicating the first chamber and the second chamber. The piston is provided in the first chamber and movably engaged with the first passage to open and close the first passage. The support member is fixedly provided on the inner wall of the first chamber. The elastic member is provided between the support member and the piston, and one end of the elastic member abuts against the support member and the other end abuts against the piston, so that the piston has a tendency to move toward the valve seat, thereby closing the first passage from one side. The one-way valve further includes a first connecting pipe and a second connecting pipe provided at both ends of the valve body, and the valve body, the first connecting pipe, and the second connecting pipe are integrally molded.

In one embodiment of the present application, the first and second connecting pipes are formed at both ends of the valve body by spinning. Since the spinning process has a relatively high degree of maturity and can process complex curved surfaces of various shapes, the first and second connecting pipes processed by the spinning process have relatively good connectivity with the valve body, and can effectively prevent the flow medium from leaking from the connection between the valve body and the first connecting pipe or the connection between the valve body and the second connecting pipe.

In one embodiment of the present application, a first limiting groove is provided on the outer wall of the valve seat, and a first limiting protrusion is provided on the valve body, and the first limiting protrusion is inserted into the first limiting groove to fix the valve seat in the valve body. With this design, the valve seat is firmly fixed in the valve body, and there is no welding point, reducing the risk of leakage of the flow medium.

In one embodiment of the present application, the first limiting groove is annular and has a rectangular cross section, and a first compression groove is provided on the side of the valve body that is away from the first limiting protrusion, corresponding to the first limiting protrusion. Since the first limiting groove is annular and has a rectangular cross section, it is easy to directly process and form it using a lathe. In the process of processing and forming the first limiting protrusion, the first limiting protrusion and the first compression groove are directly formed by pressing the valve body toward the inside of the valve body, making it easier to process and form the first limiting protrusion.

In one embodiment of the present application, the ratio of the width _A2 of the first limiting groove to the thickness _A3 of the valve seat is 20% to 30%;
And/or, the width _A1 of the first pressure groove is equal to or smaller than the width _A2 of the first limiting groove,
and/or the ratio of the depth _B2 of the first limiting groove to the wall thickness _B1 of the valve body is 15% to 25%;
and/or the ratio of the distance _B3 from the bottom of the first pressure groove to the top of the first limiting protrusion to the wall thickness _B1 of the valve body is 75% to 85%;
And/or, the one-way valve further includes a connection segment connecting the valve body and the second connecting pipe, and the shortest distance h between the valve seat and the connection segment is equal to or greater than the thickness _A3 of the valve seat.

In one embodiment of the present application, the valve body is formed with the first limiting protrusion and the first pressure groove by spinning. The maturity of the spinning process is relatively high and it is possible to process complex curved surfaces of various shapes, so the first limiting protrusion processed by the spinning process has relatively good structural strength.

In one embodiment of the present application, the one-way valve further includes a support member including a fixed portion and a guide portion, the fixed portion is fixed to the inner wall of the first chamber, one end of the guide portion is connected to the fixed portion and the other end extends toward the valve seat, and one end of the piston remote from the valve seat is movably fitted into the guide portion. With this design, the piston can be moved along the direction in which the guide portion extends, which is advantageous for the piston to accurately open and close the first passage by the action of the guide portion.

In one embodiment of the present application, a second limiting groove is provided on the outer wall of the fixing part, and a second limiting protrusion is provided on the valve body, and the second limiting protrusion is inserted into the second limiting groove to fix the support member inside the valve body. With this design, the support member is firmly fixed inside the valve body, and there is no welding point, reducing the risk of leakage of the flow medium.

In one embodiment of the present application, the second limiting groove is annular and has a rectangular cross section, and a second compression groove is provided on the side of the valve body that is away from the second limiting protrusion, corresponding to the second limiting protrusion. Since the second limiting groove is annular and has a rectangular cross section, it is easy to directly process and form it using a lathe. In the process of processing and forming the second limiting protrusion, the second limiting protrusion and the second compression groove are directly formed by pressing the valve body toward the inside of the valve body, making it easier to process and form the second limiting protrusion.

In one embodiment of the present application, the ratio of the width _A5 of the second limiting groove to the thickness _A6 of the fixing portion is 20% to 30%;
And/or, the width _A4 of the second pressure groove is equal to or smaller than the width _A5 of the second limiting groove,
and/or the ratio of the depth _B5 of the second limiting groove to the wall thickness _B4 of the valve body is 15% to 25%;
And/or, the ratio of the distance _B6 from the bottom of the second pressure groove to the top of the second limiting projection to the wall thickness _B4 of the valve body is 75% to 85%.

In one embodiment of the present application, the valve body is formed with the second limiting protrusion and the second pressure groove by spinning. The maturity of the spinning process is relatively high and it is possible to process complex curved surfaces of various shapes, so the second limiting protrusion processed by the spinning process has relatively good structural strength.

The present application provides an air conditioning device including a one-way valve according to any of the above embodiments.

In the assembly process, the one-way valve provided in the present application first completes the assembly of the support member, elastic member, piston and valve seat, then the assembled support member, elastic member, piston and valve seat are installed in the valve chamber, and finally the first connecting pipe and the second connecting pipe at both ends of the valve body are processed and shaped. The flow medium flows from the second connecting pipe into the second chamber of the valve body, and then the flow medium enters the first passage of the valve seat and pushes open the piston to enter the first chamber of the valve body, and finally the flow medium enters the first connecting pipe and exits the valve chamber of the valve body. In this case, the piston closes the first passage by the elastic action of the elastic member to avoid backflow of the flow medium. Since the valve body, the first connecting pipe and the second connecting pipe are integrally molded, there is no need to weld between the valve body, the first connecting pipe and the second connecting pipe, and there is no risk of leakage of the flow medium due to the absence of welding points. That is, the one-way valve provided in the present application solves the problem that the spring-type one-way valve has a risk of leakage of the flow medium due to the reduction in welding strength in the prior art.

FIG. 2 is a cross-sectional view of a one-way valve according to an embodiment of the present application. FIG. 2 is an enlarged view of A shown in FIG. FIG. 2 is an enlarged view of B shown in FIG.

1 valve body, 11 valve chamber, 111 first chamber, 112 second chamber, 12 first limiting protrusion, 13 first pressure groove, 14 second limiting protrusion, 15 second pressure groove, 2 valve seat, 21 first passage, 22 first limiting groove, 3 piston, 4 support member, 41 fixed portion, 411 second limiting groove, 42 guide portion, 5 elastic member, 6 first connecting pipe, 7 second connecting pipe, 8 connecting segment.

The technical aspects of the embodiments of the present application will be described below clearly and completely with reference to the drawings of the embodiments of the present application, but it is clear that the described embodiments are only a part of the embodiments of the present application and do not include all the embodiments. All other embodiments that a person skilled in the art can obtain based on the embodiments of the present application without creative effort fall within the scope of protection of the present application.

It should be noted that when an assembly is said to be "mounted" to another assembly, it may be mounted directly to the other assembly, or there may be intervening assemblies present. When an assembly is said to be "mounted" to another assembly, it may be mounted directly to the other assembly, or there may be intervening assemblies present at the same time. When an assembly is said to be "fixed" to another assembly, it may be fixed directly to the other assembly, or there may be intervening assemblies present at the same time.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. Herein, the terms used in the specification of this application are merely for the purpose of describing specific embodiments and are not intended to limit this application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

1, the one-way valve provided in the present application includes a valve body 1, a valve seat 2, a piston 3, a support member 4, and an elastic member 5. The valve body 1 is provided with a valve chamber 11. The valve seat 2 is fixedly provided in the valve chamber 11 and is sealingly connected to the inner wall of the valve chamber 11. The valve seat 2 divides the valve chamber 11 into a first chamber 111 and a second chamber 112. The valve seat 2 is provided with a first passage 21 communicating the first chamber 111 and the second chamber 112. The piston 3 is provided in the first chamber 111 and movably engaged with the first passage 21 to open and close the first passage 21. The support member 4 is fixedly provided on the inner wall of the first chamber 111. The elastic member 5 is provided between the support member 4 and the piston 3, and one end of the elastic member 5 abuts against the support member 4 and the other end abuts against the piston 3, so that the piston 3 has a tendency to move toward the valve seat 2, thereby closing the first passage 21 from one side. The one-way valve further includes a first connecting pipe 6 and a second connecting pipe 7 provided at both ends of the valve body 1, and the valve body 1, the first connecting pipe 6, and the second connecting pipe 7 are integrally molded.

In the process of assembling the one-way valve, first, the assembly of the support member 4, the elastic member 5, the piston 3 and the valve seat 2 is completed, then the assembled support member 4, the elastic member 5, the piston 3 and the valve seat 2 are installed in the valve chamber 11, and finally, the first connecting pipe 6 and the second connecting pipe 7 at both ends of the valve body 1 are processed and shaped. The flow medium flows from the second connecting pipe 7 into the second chamber 112 of the valve body 1, then the flow medium enters the first passage 21 of the valve seat 2 and pushes open the piston 3 to enter the first chamber 111 of the valve body 1, and finally, the flow medium enters the first connecting pipe 6 and leaves the valve chamber 11 of the valve body 1. In this case, the piston 3 closes the first passage 21 due to the elastic action of the elastic member 5 to prevent the flow medium from flowing back.

Since the valve body 1, the first connecting pipe 6, and the second connecting pipe 7 are integrally molded, there is no need to weld between the valve body 1 and the first connecting pipe 6, and there is also no need to weld between the valve body 1 and the second connecting pipe 7. Since there are no welds, there is no risk of leakage of the flow medium. In other words, the one-way valve provided in this application solves the problem of the risk of leakage of the flow medium in spring-type one-way valves due to reduced welding strength in the prior art.

In one embodiment, the first and second connecting pipes 6 and 7 are formed at both ends of the valve body 1 by spinning. Since the maturity of the spinning process is relatively high and it is possible to process complex curved surfaces of various shapes, the first and second connecting pipes 6 and 7 processed by the spinning process have relatively good connectivity with the valve body 1, and can effectively prevent the flow medium from leaking from the connection between the valve body 1 and the first connecting pipe 6 or the connection between the valve body 1 and the second connecting pipe 7.

In one embodiment, as shown in FIG. 1, the outer wall of the valve seat 2 is provided with a first limiting groove 22, and the valve body 1 is provided with a first limiting protrusion 12, which is inserted into the first limiting groove 22 to fix the valve seat 2 in the valve body 1. In the actual processing process, the first limiting groove 22 is first processed on the side of the valve seat 2, then the valve seat 2 is inserted into the valve chamber 11, and finally the first limiting protrusion 12 is processed and the first limiting groove 22 is locked. With this design, the valve seat 2 is firmly fixed in the valve body 1, and there is no welding point, which reduces the risk of leakage of the flow medium.

In one embodiment, as shown in FIG. 1, the first limiting groove 22 is annular and has a rectangular cross section. A first press groove 13 is provided on the side of the valve body 1 that is away from the first limiting protrusion 12, corresponding to the first limiting protrusion 12. Since the first limiting groove 22 has annular shape and a rectangular cross section, it is easy to directly process and form it using a lathe. In the process of processing and forming the first limiting protrusion 12, the first limiting protrusion 12 and the first press groove 13 are directly formed by pressing the valve body 1 against the inside of the valve body 1, making it easier to process and form the first limiting protrusion 12.

In one embodiment, as shown in FIG. 1 and FIG. 2, the ratio of the width A ₂ of the first limiting groove 22 to the thickness A ₃ of the valve seat 2 is 20% to 30%, so that the first limiting groove 22 can be connected relatively firmly to the first limiting protrusion 12, and the first limiting groove 22 is not too wide to affect the structural stability of the valve seat 2. However, the present invention is not limited thereto, and the ratio of the width A ₂ of the first limiting groove 22 to the thickness A ₃ of the valve seat 2 may be 30% to 40%, so that the structural stability of the valve seat 2 is ensured and the first limiting protrusion 12 and the first limiting groove 22 can be firmly connected. The width A ₁ of the first pressure groove 13 is equal to or less than the width A ₂ of the first limiting groove 22, which is advantageous for increasing the structural strength of the first limiting protrusion 12 of the valve body 1. The ratio of the depth B ₂ of the first limiting groove 22 to the wall thickness B ₁ of the valve body 1 is 15% to 25%, which is advantageous for increasing the structural strength of the first limiting protrusion 12 of the valve body 1. The ratio of the distance _B3 from the bottom of the first pressure groove 13 to the top of the first limiting protrusion 12 to the wall thickness _B1 of the valve body 1 is 75% to 85%, which is advantageous for enhancing the structural strength of the first limiting protrusion 12 of the valve body 1. The one-way valve further includes a connecting segment 8 connecting the valve body 1 and the second connecting pipe 7, and the shortest distance h between the valve seat 2 and the connecting segment 8 is equal to or greater than the thickness _A3 of the valve seat 2, and such a design makes it easy to assemble the one-way valve.

In one embodiment, the valve body 1 has the first limiting protrusion 12 and the first pressure groove 13 formed by spinning. The maturity of the spinning process is relatively high and it is possible to process complex curved surfaces of various shapes, so the first limiting protrusion 12 processed by the spinning process has relatively good structural strength.

In one embodiment, as shown in FIG. 1, the one-way valve further includes a support member 4 including a fixed portion 41 and a guide portion 42, and the fixed portion 41 is fixed to the inner wall of the first chamber 111. One end of the guide portion 42 is connected to the fixed portion 41, and the other end extends toward the valve seat 2, and one end of the piston 3 away from the valve seat 2 is movably fitted into the guide portion 42. Designed in this manner, the piston 3 can be moved along the direction in which the guide portion 42 extends, which is advantageous for the piston 3 to accurately open and close the first passage 21 by the action of the guide portion 42.

In one embodiment, as shown in FIG. 1, the outer wall of the fixing part 41 is provided with a second limiting groove 411, and the valve body 1 is provided with a second limiting protrusion 14, which is inserted into the second limiting groove 411 to fix the support member 4 in the valve body 1. In the actual processing process, the second limiting groove 411 needs to be machined on the side of the fixing part 41 of the support member 4 first, then the support member 4 is inserted into the valve chamber 11, and finally the second limiting protrusion 14 is formed by processing to lock the second limiting groove 411. With this design, the support member 4 is firmly fixed in the valve body 1, and there is no welding point, which reduces the risk of leakage of the flow medium.

In one embodiment, as shown in FIG. 1, the second limiting groove 411 is annular and has a rectangular cross section, and a second pressure groove 15 is provided on the side of the valve body 1 that is away from the second limiting protrusion 14, corresponding to the second limiting protrusion 14. Since the second limiting groove 411 is annular and has a rectangular cross section, it is easy to directly process and form it using a lathe. In the process of processing and forming the second limiting protrusion 14, the second limiting protrusion 14 and the second pressure groove 15 are directly formed by pressing the valve body 1 against the inside of the valve body 1, making it easier to process and form the second limiting protrusion 14.

In one embodiment, as shown in FIG. 3, the ratio of the width _A5 of the second limiting groove 411 to the thickness _A6 of the fixing portion 41 is 20% to 30%, so that the second limiting groove 411 can be connected relatively firmly to the second limiting protrusion 14, and the second limiting groove 411 is not too wide to affect the structural stability of the support member 4. However, the present invention is not limited thereto, and the ratio of the width _A5 of the second limiting groove 411 to the thickness _A6 of the fixing portion 41 may be 30% to 40%, so that the structural stability of the support member 4 is ensured and the second limiting protrusion 14 and the second limiting groove 411 can be firmly connected. The width _A4 of the second pressure groove 15 is equal to or less than the width _A5 of the second limiting groove 411, which is advantageous for increasing the structural strength of the second limiting protrusion 14 of the valve body 1. The ratio of the depth _B5 of the second limiting groove 411 to the wall thickness _B4 of the valve body 1 is 15% to 25%, which is advantageous for increasing the structural strength of the second limiting protrusion 14 of the valve body 1. Since the ratio of the distance _B6 from the bottom of the second pressure groove 15 to the top of the second limiting protrusion 14 to the wall thickness _B4 of the valve body 1 is 75% to 85%, this is advantageous in increasing the structural strength of the second limiting protrusion 14 of the valve body 1.

In one embodiment, the valve body 1 has the second limiting protrusion 14 and the second pressure groove 15 formed by spinning. The maturity of the spinning process is relatively high and it is possible to process complex curved surfaces of various shapes, so the second limiting protrusion 14 processed by the spinning process has relatively good structural strength.

The present application further provides an air conditioning device including a one-way valve as described in any of the examples.

The technical features of the above-described embodiments may be combined in any manner, and for the sake of brevity, not all possible combinations of the technical features of the above-described embodiments have been described. However, to the extent that there is no contradiction in the combination of these technical features, all should be considered to be within the scope of what is described in this specification.

It should be understood by those skilled in the art that the above embodiments are merely used to explain the present application, and are not intended to limit the present application, and any appropriate modifications and changes made to the above embodiments within the substantial spirit of the present application fall within the scope of the protection sought by the present application.

Claims (12)

a valve body provided with a valve chamber;
a valve seat fixedly mounted within the valve chamber and sealingly connected to an inner wall of the valve chamber, the valve seat dividing the valve chamber into a first chamber and a second chamber, the valve seat being provided with a first passageway communicating the first chamber with the second chamber;
a piston disposed within the first chamber and movably engaged with the first passageway to open and close the first passageway;
A support member fixed to an inner wall of the first chamber;
an elastic member provided between the support member and the piston, one end of which is in contact with the support member and the other end of which is in contact with the piston, so that the piston has a tendency to move toward the valve seat, thereby closing the first passage from one side;
A one-way valve further comprising a first connecting pipe and a second connecting pipe provided at both ends of the valve body, wherein the valve body, the first connecting pipe and the second connecting pipe are integrally molded. The one-way valve according to claim 1, wherein both ends of the valve body are formed by spinning to form the first connecting pipe and the second connecting pipe. The one-way valve according to claim 1, wherein a first limiting groove is provided on the outer wall of the valve seat, a first limiting protrusion is provided on the valve body, and the first limiting protrusion is inserted into the first limiting groove to fix the valve seat within the valve body. The one-way valve according to claim 3, wherein the first limiting groove is annular and has a rectangular cross section, and a first pressure groove is provided on the side of the valve body that is away from the first limiting protrusion, corresponding to the first limiting protrusion. The ratio of the width _A2 of the first limiting groove to the thickness _A3 of the valve seat is 20% to 30%;
And/or, the width _A1 of the first pressure groove is equal to or smaller than the width _A2 of the first limiting groove,
and/or the ratio of the depth _B2 of the first limiting groove to the wall thickness _B1 of the valve body is 15% to 25%;
and/or the ratio of the distance _B3 from the bottom of the first pressure groove to the top of the first limiting protrusion to the wall thickness _B1 of the valve body is 75% to 85%;
And/or a connection segment connecting the valve body and the second connecting pipe, wherein a shortest distance h between the valve seat and the connection segment is equal to or greater than a thickness _A3 of the valve seat. The one-way valve according to claim 4, in which the first limiting protrusion and the first pressure groove are formed by spinning. The one-way valve according to claim 1, further comprising a support member including a fixed portion and a guide portion, the fixed portion being fixed to the inner wall of the first chamber, one end of the guide portion being connected to the fixed portion and the other end extending toward the valve seat, and one end of the piston remote from the valve seat being movably fitted to the guide portion. The one-way valve according to claim 7, wherein a second limiting groove is provided on the outer wall of the fixing portion, a second limiting protrusion is provided on the valve body, and the second limiting protrusion is inserted into the second limiting groove to fix the support member inside the valve body. The one-way valve according to claim 8, wherein the second limiting groove is annular and has a rectangular cross section, and a second pressure groove is provided on the side of the valve body that is away from the second limiting protrusion, corresponding to the second limiting protrusion. The ratio of the width _A5 of the second limiting groove to the thickness _A6 of the fixing portion is 20% to 30%;
And/or, the width _A4 of the second pressure groove is equal to or smaller than the width _A5 of the second limiting groove,
and/or the ratio of the depth _B5 of the second limiting groove to the wall thickness _B4 of the valve body is 15% to 25%;
And/or the ratio of the distance _B6 from the bottom of the second pressure groove to the highest part of the second limiting protrusion to the wall thickness _B4 of the valve body is 75% to 85%. The one-way valve according to claim 9, wherein the second limiting protrusion and the second pressure groove are formed by spinning. An air conditioning device including a one-way valve according to any one of claims 1 to 11.

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