CN213332602U

CN213332602U - Fixing structure and reversing valve

Info

Publication number: CN213332602U
Application number: CN202021293428.7U
Authority: CN
Inventors: 陈建军; 杜飞龙
Original assignee: Zhejiang DunAn Hetian Metal Co Ltd
Current assignee: Zhejiang DunAn Hetian Metal Co Ltd
Priority date: 2020-07-03
Filing date: 2020-07-03
Publication date: 2021-06-01
Anticipated expiration: 2030-07-03

Abstract

The utility model relates to a refrigeration technology field especially relates to fixed knot constructs and switching-over valve. The utility model provides a fixed knot constructs, is applied to the switching-over valve, the switching-over valve includes pilot valve and main valve, fixed knot constructs including first support and second support, first support with second support fixed connection, first support is kept away from the terminal surface of pilot valve is the plane, the plane with pilot valve fixed connection, the second support with main valve fixed connection. The utility model has the advantages that: in the reversing valve with the flat bottom surface of the fixing structure adaptive to the pilot valve, the fitting degree of the first support and the pilot valve can be enhanced, so that the welding strength is enhanced.

Description

Fixing structure and reversing valve

Technical Field

The utility model relates to a refrigeration technology field especially relates to fixed knot constructs and switching-over valve.

Background

The reversing valve is applied to a refrigeration system and used for switching among different pipelines, and generally comprises a pilot valve and a main valve, wherein the pilot valve is fixed on the main valve through a fixing structure.

Because the structure of the pilot valve bottom of the switching-over valve of difference is different, current fixed knot constructs the structure that the bottom that can't be applicable to the pilot valve is flat, insecure when leading to fixed knot to construct and the pilot valve welding.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, the utility model provides a fixed knot constructs, technical scheme as follows:

the utility model provides a fixed knot constructs, is applied to the switching-over valve, the switching-over valve includes pilot valve and main valve, fixed knot constructs including first support and second support, first support with second support fixed connection, first support is kept away from the terminal surface of pilot valve is the plane, the plane with pilot valve fixed connection, the second support with main valve fixed connection.

So set up, can make fixed knot construct and be adapted to the pilot valve that the bottom is flat, can strengthen first support with the laminating degree of pilot valve to strengthen welding strength.

In one embodiment, a positioning portion is arranged at one end of the first support, which is close to the second support, and a matching portion is arranged at one end of the second support, which is close to the first support, and the positioning portion can be matched with the matching portion.

With the arrangement, when the first support and the second support are fixedly installed, positioning can be carried out.

In one embodiment, one end of the first bracket, which is close to the second bracket, is provided with a plurality of first protrusions to form the positioning portion, the plurality of first protrusions are arranged along the circumferential direction of the first bracket, the second bracket is provided with a plurality of steps along the circumferential direction to form the matching portion, and the plurality of first protrusions are respectively abutted against the plurality of steps in a one-to-one correspondence manner.

So set up, simple structure, easy assembly, location accuracy, resonant frequency are low, just first support with through welded fastening behind the second support location, firm in connection can increase resonant frequency.

In one embodiment, the first protrusions are arranged to protrude from the outer side surface of the first bracket, and the side surface of the second bracket extends between the adjacent first protrusions, so that the inner side surface of the second bracket is partially attached to the outer side surface of the first bracket.

So set up, can strengthen the welding strength of first support with the second support.

In one embodiment, two sides of the plane are respectively provided with a second protrusion, and the second protrusions are abutted with the pilot valve.

By the arrangement, the connection strength between the first support and the pilot valve can be further enhanced.

In one embodiment, the plane is provided with a first through hole.

According to the arrangement, welding flux can be contained, so that the first support and the pilot valve are effectively welded.

In one embodiment, an end surface of the second bracket, which is far away from the first bracket, is an arc surface so that the second bracket can be attached to the main valve.

So set up, can strengthen the second support with the welding strength of main valve.

In one embodiment, the cambered surface is provided with a second through hole.

According to the arrangement, the second through hole can contain welding flux, so that the second support and the pilot valve are effectively welded.

In one embodiment, an arc-shaped section is arranged between the arc surface and the side surface of the second bracket, and the arc-shaped section is connected with the arc surface and the second bracket.

With this arrangement, the friction force of the second bracket to the main valve can be reduced.

The utility model discloses still provide following technical scheme:

a reversing valve comprises a pilot valve, a main valve and the fixing structure, wherein the fixing structure is located between the pilot valve and the main valve and fixedly connected with the pilot valve and the main valve.

Compared with the prior art, the utility model provides a fixed knot constructs, through inciting somebody to action first support is kept away from the terminal surface of pilot valve sets up to the plane, in order to laminate better the pilot valve to strengthen the joint strength of fixed knot structure and pilot valve.

Drawings

Fig. 1 is a schematic structural diagram of a reversing valve provided by the present invention;

fig. 2 is a partial enlarged view of a portion a in fig. 4;

fig. 3 is a schematic structural view of a first bracket according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a first bracket according to another embodiment of the present invention;

fig. 5 is a schematic structural diagram of a second bracket according to the present invention.

The symbols in the drawings represent the following meanings:

100. a diverter valve; 10. a pilot valve; 11. a capillary tube; 20. a main valve; 21. a valve body; 22. a connecting pipe; 221. a first connecting pipe; 222. a second connecting pipe; 223. a third connecting pipe; 224. a fourth connecting pipe; 30. a fixed structure; 31. a first bracket; 311. a plane; 3111. a first through hole; 3112. a second protrusion; 312. a positioning part; 3121. a first protrusion; 313. a first side surface; 314. a second side surface; 32. a second bracket; 321. a fitting portion; 3211. a step; 322. a second through hole; 323. a first outer side; 324. a second outer side; 325. a first inner side; 326. a second inner side; 327. an arc-shaped section; 328. and (4) a groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, 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 invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 5, the utility model provides a reversing valve 100, the reversing valve 100 is applied to a refrigeration system for switching between different pipelines. In this embodiment, the directional valve 100 is a four-way directional valve, and in other embodiments, the directional valve 100 may also be a five-way directional valve, a six-way directional valve, or other types of directional valves.

Specifically, referring to fig. 1, the directional control valve 100 includes a pilot valve 10, a main valve 20, and a fixing structure 30, wherein the fixing structure 30 is located between the pilot valve 10 and the main valve 20, one end of the fixing structure 30 is connected to the pilot valve 10, and the other end is connected to the main valve 20. In this embodiment, the fixed structure 30 is made of stainless steel, which can reduce the cost, the pilot valve 10 and the main valve 20 are made of copper, and the fixed structure 30, the pilot valve 10 and the main valve 20 are welded and fixed by a welding technique of stainless steel and copper, in other embodiments, the main valve 20 and the pilot valve 10 can be made of stainless steel, or the main valve 20 is made of copper, the pilot valve 10 is made of stainless steel, or the main valve 20 is made of stainless steel, the pilot valve 10 is made of copper, and the fixed structure 30 can be made of copper or other materials.

The pilot valve 10 and the main valve 20 each have an internal cavity (not shown), and the internal cavity of the pilot valve 10 and the internal cavity of the main valve 20 communicate with each other through a capillary tube 11.

The main valve 20 includes a valve body 21 and a connection pipe 22, and the connection pipe 22 is connected to the valve body 21. In the present embodiment, the connection pipe 22 includes a first connection pipe 221, a second connection pipe 222, a third connection pipe 223, and a fourth connection pipe 224, four capillary tubes 11 are provided, and the four capillary tubes 11 are respectively connected to the first connection pipe 221, the third connection pipe 223, and two ends of the valve body 21. The second connection pipe 222 is connected to an evaporator (not shown) in the refrigeration system, that is, the second connection pipe 222 is connected to the "E" port, the third connection pipe 223 is connected to a suction port of a compressor (not shown), the third connection pipe 223 is connected to the "S" port, and the fourth connection pipe 224 is connected to a condenser (not shown), that is, the fourth connection pipe 224 is connected to the "C" port. In other embodiments, the connection pipe 22 may further include a fifth connection pipe or more, and the fifth connection pipe is connected to another heat exchanger, the first connection pipe 221, or other locations according to different uses of the direction valve 100.

Referring to fig. 2, the fixing structure 30 includes a first bracket 31 and a second bracket 32, the first bracket 31 and the second bracket 32 are fixed by welding, the first bracket 31 and the pilot valve 10 are fixed by welding, and the second bracket 32 and the valve body 21 are fixed by welding.

Referring to fig. 3, in an embodiment, an end surface of the first bracket 31 away from the pilot valve 10 is a plane 311, the plane 311 is used for supporting the pilot valve 10 and is welded and fixed with the pilot valve 10, and since a portion of the pilot valve 10 abutting against the plane 311 is flat, the end surface of the first bracket 31 away from the pilot valve 10 is set as the plane 311, which can enhance the welding strength between the first bracket 31 and the pilot valve 10.

It can be understood that, by such an arrangement, the fixing structure 30 can be applied to the reversing valve 100 in which the bottom surface of the pilot valve 10 is flat, so as to improve the welding strength.

Referring to fig. 4, in another embodiment, the two sides of the plane 311 are provided with second protrusions 3112, and the second protrusions 3112 can abut against the pilot valve 10, so as to further enhance the connection strength between the first bracket 31 and the pilot valve 10.

One end of the first bracket 31 close to the second bracket 32 is provided with a positioning portion 312, one end of the second bracket 32 close to the first bracket 31 is provided with a matching portion 321, and the matching portion 321 can be matched with the positioning portion 312 to position and fix the first bracket 31 and the second bracket 32 by welding. So set up, the mode of location installation is fairly simple, easy assembly, and joint strength is high, and first support 31 can realize pinpointing with second support 32, and resonant frequency is high, uses for a long time, can not lead to capillary 11 to break.

The plane 311 is opened with a first through hole 3111, and when the first bracket 31 and the pilot valve 10 are welded, the first through hole 3111 can accommodate solder so that the first bracket 31 and the pilot valve 10 can be sufficiently welded.

One end of the first bracket 31 close to the second bracket 32 is provided with a plurality of first protrusions 3121 to form the positioning portion 312, the plurality of first protrusions 3121 are arranged along the circumferential direction of the first bracket 31, the second bracket 32 is provided with a plurality of steps 3211 along the circumferential direction to form the fitting portion 321, and the plurality of first protrusions 3121 respectively abut against the steps 3211 in a one-to-one correspondence manner. In other embodiments, the second bracket 32 may be provided with a groove 328 to form the matching portion 321, or the first bracket 31 may be provided with a groove 328 and the second bracket 32 may be provided with a protrusion to achieve the positioning between the first bracket 31 and the second bracket 32.

In this embodiment, the first protrusion 3121 and the second protrusion 3112 are both formed by flanging the first bracket 31, that is, the first protrusion 3121 and the second protrusion 3112 are both integrally disposed with the first bracket 31, which can save the welding process. In other embodiments, first protrusion 3121 and second protrusion 3112 may also be secured to first bracket 31 by welding or other means, depending on the design.

The plurality of first protrusions 3121 are convexly arranged relative to the outer side surface of the first support 31, and the side surface of the second support 32 extends into the space between the adjacent first protrusions 3121, so that the inner side surface of the second support 32 is partially attached to the outer side surface of the first support 31, and then the joint between the inner side surface of the second support 32 and the inner side surface of the first support 31 is welded and fixed, thereby enhancing the welding strength.

In this embodiment, the first frame 31 is "Jiong" shaped and the second frame 32 is "U" shaped, i.e. the first frame 31 and the second frame 32 have only two sides, which can save material. The first bracket 31 has a first side surface 313 and a second side surface 314 which are oppositely arranged, four first protrusions 3121 are respectively located on four end points of the first side surface 313 and the second side surface 314, and are convexly arranged opposite to the first side surface 313 and the second side surface 314; the second bracket 32 has a first inner side 325 and a second inner side 326 disposed oppositely, and the first side 313 and the second side 314 are partially attached to the first inner side 325 and the second inner side 326, respectively. In other embodiments, the first support 31 and the second support 32 may also be four sides, the first protrusions 3121 are eight and located on each end of the four sides, or the first protrusions 3121 are four and located on four ends of the four sides.

Referring to fig. 5, an end surface of the second bracket 32 away from the first bracket 31 is an arc surface, so that the second bracket 32 can be attached to an outer side surface of the valve body 21, thereby enhancing welding strength.

A second through hole 322 is formed in the arc surface of the second bracket 32, and the second through hole 322 can accommodate solder so that the second bracket 32 can be sufficiently welded with the valve body 21.

Further, the second bracket 32 has a first outer side 323 and a second outer side 324 which are oppositely arranged, the first outer side 323 is located outside the first inner side 325, the second outer side 324 is located outside the second inner side 326, an arc section 327 is respectively arranged between the arc surface of the second bracket 32 and the first outer side 323 and the second outer side 324, and the arc section 327 is respectively connected with the first outer side 323 and the arc surface as well as the second outer side 324 and the arc surface, that is, a rounded angle is arranged between the arc surface of the second bracket 32 and the first outer side 323 and the second outer side 324, so as to reduce the friction force of the second bracket 32 on the valve body 21.

Preferably, the two sides of the arc surface of the second bracket 32 are respectively provided with a groove 328, so as to save materials and reduce cost.

In the installation process, the cambered surface of the second support 32 is attached to the valve body 21, and the solder is added into the second through hole 322, so that the second support 32 and the valve body 21 are welded and fixed; placing the pilot valve 10 on the plane 311, and adding solder into the first through hole 3111, thereby welding and fixing the first support 31 and the pilot valve 10; the positioning portion 312 is engaged with the engaging portion 321 to position the first bracket 31 and the second bracket 32, the first lateral surface 313 and the second lateral surface 314 are partially attached to the first inner lateral surface 325 and the second inner lateral surface 326, respectively, and then the joint of the two is welded and fixed.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a fixed knot constructs, is applied to the switching-over valve, the switching-over valve includes pilot valve (10) and main valve (20), its characterized in that, fixed knot constructs including first support (31) and second support (32), first support (31) with second support (32) fixed connection, the terminal surface that first support (31) kept away from pilot valve (10) is plane (311), plane (311) can bear pilot valve (10) and with pilot valve (10) fixed connection, second support (32) with main valve (20) fixed connection.

2. The fixing structure according to claim 1, wherein a positioning portion (312) is provided at an end of the first bracket (31) close to the second bracket (32), and an engaging portion (321) is provided at an end of the second bracket (32) close to the first bracket (31), the positioning portion (312) being engageable with the engaging portion (321).

3. The fixing structure according to claim 2, wherein one end of the first bracket (31) close to the second bracket (32) is provided with a plurality of first protrusions (3121) to form the positioning portion (312), the plurality of first protrusions (3121) are provided along a circumferential direction of the first bracket (31), the second bracket (32) is provided with a plurality of steps (3211) along the circumferential direction to form the fitting portion (321), and the plurality of first protrusions (3121) respectively abut against the plurality of steps (3211) in a one-to-one correspondence manner.

4. The fixing structure according to claim 3, wherein a plurality of the first protrusions (3121) are protrudingly provided with respect to the outer side of the first support (31), and the side of the second support (32) is protruded between the adjacent first protrusions (3121) so that the inner side portion of the second support (32) is fitted with the outer side of the first support (31).

5. The arrangement, as set forth in claim 1, characterized in that, on both sides of the plane (311), there are provided second protrusions (3112), respectively, said second protrusions (3112) being able to abut against the pilot valve (10).

6. The fastening structure of claim 1, wherein the plane (311) has a first through hole (3111) formed therein.

7. The fixing structure according to claim 1, characterized in that the end face of the second bracket (32) remote from the first bracket (31) is cambered to enable the second bracket (32) to be conformed to the main valve (20).

8. The fixing structure of claim 7, wherein the arc surface is provided with a second through hole (322).

9. The fixing structure according to claim 7, characterized in that an arc-shaped section (327) is arranged between the arc surface and the side surface of the second bracket (32), and the arc-shaped section (327) is connected with the arc surface and the side surface of the second bracket (32).

10. A reversing valve, comprising a pilot valve (10), a main valve (20) and a fixing structure according to any one of claims 1 to 9, wherein the fixing structure is located between the pilot valve (10) and the main valve (20) and is fixedly connected with the pilot valve (10) and the main valve (20).