CN217898943U

CN217898943U - Four-way valve

Info

Publication number: CN217898943U
Application number: CN202122368364.3U
Authority: CN
Inventors: 张飞; 杜飞龙
Original assignee: Dunan Environment Technology Co Ltd
Current assignee: Dunan Environment Technology Co Ltd
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2022-11-25
Anticipated expiration: 2031-09-28

Abstract

The utility model provides a four-way valve, which comprises a valve body, a valve seat and a connecting pipe, wherein the valve body is internally provided with a valve cavity, and the side wall of the valve body is provided with an avoidance port; the valve seat is arranged in the valve body, the valve seat is welded with the periphery of the avoidance port, the valve seat is provided with an assembling hole, the assembling hole and the avoidance port are correspondingly arranged, and the assembling hole is communicated with the valve cavity; one end of the connecting pipe penetrates into the assembly hole, the connecting pipe is welded with the avoiding port and the assembly hole, the sum of the lengths of the connecting pipe penetrating into the avoiding port and the assembly hole is H1, the wall thickness value of one of the connecting pipe and the valve body is T, and H1 is larger than or equal to 2T and smaller than or equal to 4T. By adopting the scheme, the total length of the connecting pipe penetrating and avoiding port and the assembling hole is limited within the range, the strength of the welding position is improved, namely, the welding quality is improved, and the smooth flow of fluid in the valve body is ensured.

Description

Four-way valve

Technical Field

The utility model relates to a switching-over valve technical field particularly, relates to a cross valve.

Background

In a heat pump type air conditioner, a four-way valve is a key component for switching the refrigerating cycle working condition and the heating cycle working condition of a system. The interconversion between the refrigeration and the heating is realized through the switching of the four-way valve. The four-way valve mainly comprises an electromagnetic coil, a pilot valve and a main valve, wherein the main valve is switched to switch the flowing direction of the refrigerating working medium under the combined action of the electromagnetic coil and the pilot valve, so that the interconversion between the refrigeration and the heating of the air conditioner is realized.

The main valve in the four-way valve is composed of a valve body, a valve seat, a connecting pipe and the like, the valve body, the valve seat and the connecting pipe are connected in a welding mode, an avoiding opening is formed in the side wall of the valve body, one end of the connecting pipe penetrates into the valve seat from the avoiding opening, and the other end of the connecting pipe is communicated with an external structure, so that interconversion between refrigeration and heating of the air conditioner is achieved. The depth of the connecting pipe penetrating into the avoiding opening and the valve seat affects the welding quality. However, the insertion depth of the butt joint pipe in the existing four-way valve is not reasonably limited, and further research is needed to improve the welding quality of the four-way valve.

SUMMERY OF THE UTILITY MODEL

The utility model provides a cross valve to improve the welding quality of takeover in the cross valve.

In order to realize the above purpose, the utility model provides a four-way valve, include: the valve comprises a valve body, a valve cavity is arranged in the valve body, and an avoidance port is formed in the side wall of the valve body; the valve seat is arranged in the valve body, the periphery of the valve seat and the avoidance port are welded, the valve seat is provided with an assembling hole, the assembling hole and the avoidance port are correspondingly arranged, and the assembling hole is communicated with the valve cavity; and a connecting pipe, wherein one end of the connecting pipe penetrates into the assembly hole, the connecting pipe is welded with the avoiding port and the assembly hole, the sum of the lengths of the connecting pipe penetrating into the avoiding port and the assembly hole is H1, the wall thickness value of one of the connecting pipe and the valve body is T, and H1 is more than or equal to 2T and less than or equal to 4T.

Furthermore, H1 is more than or equal to 3T and less than or equal to 3.5T.

Furthermore, the wall thickness of the connecting pipe is T1, and T1 is more than or equal to 0.65mm and less than or equal to 0.75mm.

Furthermore, the wall thickness of the valve body is T2, and T2 is more than or equal to 1.0mm and less than or equal to 1.4mm.

Furthermore, the side wall of one end, penetrating into the assembly hole, of the connecting pipe is provided with a welding groove, the length of the welding groove in the axial direction of the connecting pipe is H2, and H1 is less than or equal to H2.

Furthermore, the welding groove is a plurality of, and a plurality of welding grooves are arranged along the circumference interval of takeover.

Further, the weld groove extends to the end face of the adapter tube, and the plurality of weld grooves are formed by a knurled structure.

Furthermore, the connecting pipe comprises a first pipe section and a second pipe section which are connected with each other, one end of the first pipe section penetrates into the assembling hole, the outer diameter of the first pipe section is D1, the inner diameter of the second pipe section is D2, and the outer diameter of the valve body is D3, wherein D1 is more than or equal to 9.0mm and less than or equal to 10.0mm; d2 is more than or equal to 9.0mm and less than or equal to 10.0mm; d3 is more than or equal to 20.0mm and less than or equal to 21.0mm.

Further, the pilot hole includes inner bore section and outer bore section that communicates each other, and the diameter of inner bore section is less than the diameter of outer bore section, and inner bore section and valve pocket intercommunication, the one end of takeover penetrate outer bore section.

Furtherly, dodge mouth, pilot hole and takeover and be a plurality ofly, a plurality ofly dodge mouthful one-to-one ground and a plurality of pilot hole intercommunication, a plurality of takeovers penetrate a plurality of pilot holes one-to-one.

The technical scheme of the utility model is applied, the four-way valve is provided, the four-way valve comprises a valve body, a valve seat and a connecting pipe, a valve cavity is arranged in the valve body, and an avoidance port is arranged on the side wall of the valve body; the valve seat is arranged in the valve body, the valve seat is welded with the periphery of the avoidance port, the valve seat is provided with an assembly hole, the assembly hole and the avoidance port are correspondingly arranged, and the assembly hole is communicated with the valve cavity; one end of the connecting pipe penetrates into the assembly hole, the connecting pipe is welded with the avoiding opening and the assembly hole, the sum of the lengths of the connecting pipe penetrating into the avoiding opening and the assembly hole is H1, the wall thickness value of one of the connecting pipe and the valve body is T, and H1 is more than or equal to 2T and less than or equal to 4T. By adopting the scheme, the total length of the connecting pipe penetrating and avoiding port and the assembling hole is limited within the range, so that the strength of the welding position is improved, namely, the welding quality is improved. If H1 is less than 2T, the insertion length of the connecting pipe is too short, that is, the welding overlap length is too short, which affects the connection reliability of the connecting pipe, and the connecting pipe is easy to open and weld in the use process, and if H1 is greater than 4T, the insertion length of the connecting pipe is long, and may penetrate through the valve seat and extend into the valve cavity, and the portion extending into the valve cavity may affect the fluid flow. Therefore, H1 is limited in the range, so that the welding quality of the connecting pipe is improved, and the smooth flow of the fluid in the valve body is ensured.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural diagram of a four-way valve provided in an embodiment of the present invention;

fig. 2 shows a schematic structural view of the adapter tube in fig. 1.

Wherein the figures include the following reference numerals:

10. a valve body; 11. a valve cavity; 20. a valve seat; 21. an assembly hole; 30. taking over a pipe; 31. welding a groove; 32. a first tube section; 33. a second tube segment.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

As shown in fig. 1-2, an embodiment of the utility model provides a four-way valve, include: the valve comprises a valve body 10, wherein a valve cavity 11 is formed in the valve body 10, and an avoidance port is formed in the side wall of the valve body 10; the valve seat 20 is arranged in the valve body 10, the valve seat 20 is welded with the periphery of the avoidance port, the valve seat 20 is provided with an assembling hole 21, the assembling hole 21 and the avoidance port are correspondingly arranged, and the assembling hole 21 is communicated with the valve cavity 11; one end of the connecting pipe 30 penetrates into the assembling hole 21, the connecting pipe 30 is welded with the avoiding opening and the assembling hole 21, the sum of the lengths of the connecting pipe 30 penetrating into the avoiding opening and the assembling hole 21 is H1, the wall thickness value of one of the connecting pipe 30 and the valve body 10 with thin wall is T, and H1 is more than or equal to 2T and less than or equal to 4T. If the wall thickness of the adapter tube 30 is smaller than that of the valve body 10, T means the wall thickness of the adapter tube 30, and if the wall thickness of the valve body 10 is smaller than that of the adapter tube 30, T means the wall thickness of the valve body 10.

By adopting the scheme, the total length H1 of the connecting pipe 30 penetrating the avoiding opening and the assembling hole 21 is limited within the range, so that the strength of the welding position is improved, namely the welding quality is improved. If H1 is less than 2T, the insertion length of the connection pipe 30 is too short, that is, the welding overlapping length is too short, which affects the connection reliability of the connection pipe 30, and is easy to open during use, and if H1 is greater than 4T, the insertion length of the connection pipe 30 is too long, which may penetrate through the valve seat 20 and protrude into the valve cavity 11, and the portion protruding into the valve cavity 11 affects the fluid flow. Therefore, by limiting H1 within the above range, the welding quality of the adapter tube 30 is improved, and the smooth flow of the fluid in the valve body 10 is ensured. Wherein, the valve body 10, the valve seat 20 and the connecting pipe 30 are all made of copper alloy.

Furthermore, H1 is more than or equal to 3T and less than or equal to 3.5T. The total length H1 of the penetration of the adapter tube 30 into the escape opening and the fitting hole 21 is defined within the above range, further improving the strength of the adapter tube 30, the valve body 10, and the valve seat 20 at the welding position.

Specifically, in the present embodiment, the wall thickness of the adapter tube 30 is T1, and T1 is 0.65mm ≦ T1 ≦ 0.75mm. The wall thickness of the adapter tube 30 is set to the above range, which can not only ensure the structural strength, but also reduce the material usage, and facilitate the assembly and welding.

Specifically, the wall thickness of the valve body 10 is T2, and T2 is more than or equal to 1.0mm and less than or equal to 1.4mm. The wall thickness of the valve body 10 is set within the above range, so that the structural strength of the valve body 10 is ensured, the material consumption can be reduced, and the cost and the product weight can be reduced.

Furthermore, the side wall of one end of the connecting pipe 30 penetrating into the assembling hole 21 is provided with a welding groove 31, the length of the welding groove 31 in the axial direction of the connecting pipe 30 is H2, and H1 is less than or equal to H2. By providing the weld groove 31, the melted solder can flow into the weld groove 31 during the welding process, i.e., more solder can flow between the outer wall of the adapter tube 30 and the inner wall of the fitting hole 21, so that the welding strength can be improved.

Further, the number of the welding grooves 31 is plural, and the plural welding grooves 31 are provided at intervals in the circumferential direction of the adapter tube 30. Therefore, in the welding process, the welding flux can be uniformly distributed at different positions of the circumference of the connecting pipe 30, so that the welding quality is improved.

Specifically, the weld grooves 31 extend to the end surface of the adapter tube 30, and the plurality of weld grooves 31 are formed by a knurled structure. Before welding, a welding ring can be placed on the end face of the connecting pipe 30, and the welding groove 31 extends to the end face of the connecting pipe 30, so that the welding ring can flow into the welding groove 31 at the end face of the connecting pipe 30 after being melted, the melted welding flux can conveniently enter the welding groove 31, and the welding strength is improved.

During welding operation, a tensioning tool can be used to penetrate into the connecting pipe 30, and the tensioning tool supports the inner wall of the connecting pipe 30, so that the uniformity of the gap between the connecting pipe 30 and the valve seat 20 can be ensured, solder can uniformly flow into the gap, and the welding quality is improved.

As shown in fig. 1 and 2, the connection pipe 30 includes a first pipe section 32 and a second pipe section 33 connected to each other, one end of the first pipe section 32 penetrates into the assembly hole 21, the outer diameter of the first pipe section 32 is D1, the inner diameter of the second pipe section 33 is D2, and the outer diameter of the valve body 10 is D3, wherein D1 is greater than or equal to 9.0mm and less than or equal to 10.0mm; d2 is more than or equal to 9.0mm and less than or equal to 10.0mm; d3 is more than or equal to 20.0mm and less than or equal to 21.0mm. The connecting pipe 30 is provided with two sections with different diameters, so that the connecting pipe can be conveniently connected with other pipelines. Through the limitation of the parameters, the structural reliability and the service performance of the four-way valve are ensured.

Further, the fitting hole 21 includes an inner hole section and an outer hole section which are communicated with each other, the diameter of the inner hole section is smaller than that of the outer hole section, the inner hole section is communicated with the valve chamber 11, and one end of the adapter tube 30 penetrates into the outer hole section. The fitting hole 21 is provided in two sections, so that a stepped surface can be formed, and the insertion depth of the joint pipe 30 can be positioned and limited. Specifically, the diameter of the inner bore section is smaller than the outer diameter of the nipple 30. And, the diameter of the inner hole section is greater than the inner diameter of the nipple 30 so that the inner hole section does not obstruct the flow of fluid inside the nipple 30.

As shown in fig. 1, the avoidance ports, the assembly holes 21, and the connection pipes 30 are all plural, the plural avoidance ports are communicated with the plural assembly holes 21 in a one-to-one correspondence, and the plural connection pipes 30 penetrate the plural assembly holes 21 in a one-to-one correspondence. By arranging the plurality of connecting pipes 30, the four-way valve can be communicated with different pipelines outside the four-way valve, so that the reversing function of the four-way valve is realized.

Specifically, the four-way valve further comprises a sliding block, the sliding block is slidably arranged in the valve cavity 11, the sliding block is provided with a communicating groove, the communicating groove can be communicated with at least two assembling holes 21 through sliding of the sliding block, and the corresponding communicated assembling holes 21 can be switched to change the direction.

The four-way valve is positioned in a refrigerant loop formed by an indoor heat exchanger, an outdoor heat exchanger and the like and comprises three major parts, namely an electromagnetic coil, a main valve and a pilot valve, wherein end covers are welded at two ends of a valve body 10 of the main valve, a sliding block is arranged in the valve body 10, the sliding block is respectively connected with a piston part through a guide frame, and a cavity of the main valve is divided into a left cavity, a middle cavity and a right cavity by the piston part; the upper part of the sliding block is processed with steps and is matched with the guide frame through the steps, the lower part of the sliding block is provided with an inner cavity, one group of connecting pipes 30 form closed fluid circulation through the inner cavity, the other group of connecting pipes 30 form another closed fluid circulation through the inner cavity of the valve body 10, and the two groups of fluid circulation paths are separated by the main body part of the sliding block. When the air conditioner needs to refrigerate, under the action of the pilot valve, a pressure difference is formed between the left chamber and the right chamber of the main valve, the pressure difference between the left chamber and the right chamber of the main valve pushes the sliding block and the two pistons to move, so that a refrigerant in the system flows from the exhaust port of the compressor to the suction port of the compressor, and the system is in a refrigerating working state; when the air conditioner needs to be heated, a pressure difference is formed between the left chamber and the right chamber of the main valve under the action of the pilot valve, the pressure difference pushes the sliding block and the two pistons to move in opposite directions, so that the refrigerant automatically flows to the suction port of the compressor, and the system is in a heating working state.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of parts and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

For ease of description, spatially relative terms such as "over 8230," "upper surface," "above," and the like may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; 'above" may include both orientations "at 8230; \8230;' above 8230; 'at 8230;' below 8230;" above ". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms do not have special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

Claims

1. A four-way valve, comprising:

the valve body (10), a valve cavity (11) is arranged in the valve body (10), and an avoidance opening is formed in the side wall of the valve body (10);

the valve seat (20) is arranged in the valve body (10), the valve seat (20) is welded with the periphery of the avoidance port, the valve seat (20) is provided with an assembling hole (21), the assembling hole (21) and the avoidance port are correspondingly arranged, and the assembling hole (21) is communicated with the valve cavity (11);

take over (30), the one end of takeover (30) penetrates the pilot hole (21), take over (30) with dodge the mouth, pilot hole (21) welding, take over (30) penetrate the length sum of dodging the mouth with pilot hole (21) is H1, take over (30) with the wall thickness value of one of wall thickness is T in valve body (10), wherein,

2T≤H1≤4T。

2. the four-way valve of claim 1 wherein H1 is 3T or more and 3.5T or less.

3. Four-way valve according to claim 1, wherein the wall thickness of the connection tube (30) is T1, T1 being 0.65mm ≤ and 0.75mm.

4. The four-way valve according to claim 1, wherein the wall thickness of the valve body (10) is T2, T2 being 1.0mm ≤ T2 ≤ 1.4mm.

5. The four-way valve according to any of claims 1 to 4, wherein the side wall of the end of the connection pipe (30) penetrating into the fitting hole (21) has a weld groove (31), and the length of the weld groove (31) in the axial direction of the connection pipe (30) is H2, H1 ≦ H2.

6. The four-way valve according to claim 5, wherein the weld groove (31) is provided in plurality, and the plurality of weld grooves (31) are provided at intervals in a circumferential direction of the connection pipe (30).

7. The four-way valve according to claim 6, wherein the weld grooves (31) extend to an end surface of the nipple (30), and a plurality of the weld grooves (31) are formed by a knurled structure.

8. The four-way valve according to claim 1, wherein the connection pipe (30) comprises a first pipe section (32) and a second pipe section (33) connected to each other, one end of the first pipe section (32) penetrates into the fitting hole (21), the first pipe section (32) has an outer diameter D1, the second pipe section (33) has an inner diameter D2, and the valve body (10) has an outer diameter D3, wherein,

9.0mm≤D1≤10.0mm；

9.0mm≤D2≤10.0mm；

20.0mm≤D3≤21.0mm。

9. the four-way valve according to claim 1, wherein the fitting hole (21) comprises an inner hole section and an outer hole section communicating with each other, the inner hole section having a smaller diameter than the outer hole section, the inner hole section communicating with the valve chamber (11), and one end of the adapter tube (30) penetrating into the outer hole section.

10. The four-way valve according to claim 1, wherein the evasion port, the assembly hole (21) and the connection pipe (30) are all plural, the evasion ports are communicated with the assembly holes (21) in a one-to-one correspondence, and the connection pipes (30) penetrate into the assembly holes (21) in a one-to-one correspondence.