CN216200844U

CN216200844U - Four-way valve

Info

Publication number: CN216200844U
Application number: CN202122374102.8U
Authority: CN
Inventors: 张飞; 朱佳峰
Original assignee: ZHUHAI HUAYU METAL CO LTD
Current assignee: ZHUHAI HUAYU METAL CO LTD
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2022-04-05
Anticipated expiration: 2031-09-28

Abstract

The utility model provides a four-way valve, comprising: the valve comprises a valve body, 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 cavity, the valve seat is welded with the periphery of the avoidance port, the valve seat is provided with an assembly hole, the assembly hole comprises an inner hole section and an outer hole section which are communicated with each other, the inner hole section is communicated with the valve cavity, the diameter of the inner hole section is smaller than that of the outer hole section, a transition position of the inner hole section and the outer hole section is provided with a limiting surface, and an accommodating groove for accommodating welding flux is formed in the limiting surface; and a part of the connecting pipe penetrates into the outer hole section, and the connecting pipe is welded with the valve seat. Through the technical scheme provided by the utility model, the problem that solder easily flows into the surface of the valve seat in the welding process of the four-way valve in the prior art can be solved.

Description

Four-way valve

Technical Field

The utility model relates to the technical field of reversing valves, in particular to a four-way valve.

Background

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

The main valve in the four-way reversing valve is composed of a valve body, a pilot valve, 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, and the connecting pipe is used for realizing communication with an external structure, so that mutual conversion between air conditioner refrigeration and heating is realized. In the prior art, when the valve body, the valve seat and the connecting pipe are connected in a welding mode, the valve body, the valve seat and the connecting pipe are connected by heating welding flux, the heated welding flux can flow into the surface of the valve seat, the welding flux is attached to the surface of the valve seat, the surface of the valve seat is uneven, the abrasion is increased when the welding flux is in contact with other structures, and therefore the service life of the four-way reversing valve is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a four-way valve, which aims to solve the problem that solder easily flows into the surface of a valve seat in the welding process of the four-way valve in the prior art.

In order to solve the above problems, the present invention provides a four-way valve, comprising: the valve comprises a valve body, 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 cavity, the valve seat is welded with the periphery of the avoidance port, the valve seat is provided with an assembly hole, the assembly hole comprises an inner hole section and an outer hole section which are communicated with each other, the inner hole section is communicated with the valve cavity, the diameter of the inner hole section is smaller than that of the outer hole section, a transition position of the inner hole section and the outer hole section is provided with a limiting surface, and an accommodating groove for accommodating welding flux is formed in the limiting surface; and a part of the connecting pipe penetrates into the outer hole section, and the connecting pipe is welded with the valve seat.

Further, the depth of the containing groove in the axial direction of the connecting pipe is 0.5-1 mm.

Further, the holding tank is the ring channel, and the holding tank encircles the interior hole section setting.

Further, the shape of the radial cross section of the accommodation groove is rectangular, V-shaped, or U-shaped.

Further, the diameter of the inner hole section is larger than the inner diameter of the connecting pipe and smaller than the outer diameter of the connecting pipe.

Furthermore, a welding flux is arranged between the end surface of the connecting pipe and the limiting surface.

Further, one end of the inner hole section facing the valve cavity is provided with a chamfer.

Furthermore, the outer wall of one end of the connecting pipe is provided with a conical surface which penetrates into the outer hole section.

Furthermore, it is a plurality of to dodge the mouth, and the pilot hole is a plurality of, takes over for a plurality of, and a plurality of pilot holes and a plurality of dodge mouthful one-to-one and set up, and a plurality of takeovers and a plurality of pilot hole one-to-one set up.

Further, the four-way valve further comprises a sliding block, the sliding block is slidably arranged in the valve cavity, the sliding block is provided with a communicating groove, and the communicating groove is used for communicating at least two assembling holes.

The technical scheme of the utility model provides a four-way valve, which comprises: the valve comprises a valve body, 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 cavity, the valve seat is welded with the periphery of the avoidance port, the valve seat is provided with an assembly hole, the assembly hole comprises an inner hole section and an outer hole section which are communicated with each other, the inner hole section is communicated with the valve cavity, the diameter of the inner hole section is smaller than that of the outer hole section, a transition position of the inner hole section and the outer hole section is provided with a limiting surface, and an accommodating groove for accommodating welding flux is formed in the limiting surface; and a part of the connecting pipe penetrates into the outer hole section, and the connecting pipe is welded with the valve seat. By adopting the scheme, the accommodating groove for accommodating the solder is arranged on the limiting surface, the solder is heated, after the solder is filled in the welding seam position, the redundant solder in the molten state can flow into the accommodating groove, the solder in the molten state is prevented from flowing into the surface of the valve seat, and the problem that the solder attached to the surface of the valve seat influences the service life of the four-way valve is avoided. The inner hole section is arranged, so that the insertion depth of the connecting pipe can be limited during assembly; the outer hole section is arranged, so that the pipe can be guided, and the assembly and the installation are convenient.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

FIG. 1 illustrates a cross-sectional view of a four-way valve provided by an embodiment of the present invention;

FIG. 2 shows a block diagram of the valve seat of FIG. 1;

FIG. 3 shows a cross-sectional view of the valve seat of FIG. 2;

fig. 4 shows a close-up view of the valve seat of fig. 3.

Wherein the figures include the following reference numerals:

10. a valve body; 11. a valve cavity;

20. a valve seat; 21. an assembly hole; 211. an inner bore section; 2111. chamfering; 212. an outer bore section; 213. a limiting surface; 2131. accommodating grooves;

30. and (6) taking over.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 4, an embodiment of the present invention provides a four-way valve, including: 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 cavity 11, the valve seat 20 is welded with the periphery of the avoidance opening, the valve seat 20 is provided with an assembly hole 21, the assembly hole 21 comprises an inner hole section 211 and an outer hole section 212 which are communicated with each other, the inner hole section 211 is communicated with the valve cavity 11, the diameter of the inner hole section 211 is smaller than that of the outer hole section 212, the transition position of the inner hole section 211 and the outer hole section 212 is provided with a limiting surface 213, and the limiting surface 213 is provided with a containing groove 2131 for containing solder; the adapter 30, a portion of the adapter 30 penetrates into the outer hole section 212, and the adapter 30 is welded to the valve seat 20.

By adopting the scheme, the accommodating groove 2131 for accommodating the solder is arranged on the limiting surface 213, the solder is heated, after the solder is filled in the welding seam position, the redundant solder in the molten state can flow into the accommodating groove 2131, the solder in the molten state is prevented from flowing into the surface of the valve seat 20, and the influence of the solder attached to the surface of the valve seat 20 on the service life of the four-way valve is avoided. Wherein, the inner hole section 211 is provided, when assembling, the insertion depth of the adapter tube 30 can be limited; the outer hole section 212 is provided to guide the pipe 30 for assembly and installation.

Wherein, the depth of the containing groove 2131 in the axial direction of the connecting pipe 30 is 0.5-1 mm. By limiting the depth of the receiving groove 2131 in the axial direction of the adapter tube 30 to the above range, the solder can be sufficiently received and the service life of the valve seat 20 can be increased. When the depth of the receiving groove 2131 in the axial direction of the adapter tube 30 is less than 0.5mm, the solder in a molten state flows into the surface of the valve seat 20 due to the excessively shallow depth of the receiving groove 2131; when the depth of the receiving groove 2131 in the axial direction of the nipple 30 is greater than 1mm, the thickness of the inner hole section 211 is thin due to the excessive depth of the receiving groove 2131, thereby reducing the structural strength of the valve seat 20.

Specifically, the receiving groove 2131 is an annular groove, and the receiving groove 2131 is disposed around the inner bore section 211. The accommodation groove 2131 is provided as an annular groove, and can sufficiently accommodate the solder, and reduce or prevent the solder in a molten state from flowing into the surface of the valve seat 20.

Further, the shape of the radial cross section of the accommodation groove 2131 is a rectangle, a V shape, or a U shape. By providing the radial cross-sectional shape of the accommodation groove 2131 in a rectangular shape, a V shape, or a U shape, accommodation of the solder in a molten state can be achieved. A radial cross section is understood to mean a cross section in a plane through the axis of the connecting piece.

In the present embodiment, the diameter of the inner bore section 211 is greater than the inner diameter of the nipple 30 and less than the outer diameter of the nipple 30. With the above arrangement, it is possible to prevent the adapter tube 30 from passing through the bore section 211 at the time of assembly, and it is possible to ensure that the bore section 211 and the adapter tube 30 are in contact, thereby defining the insertion depth of the adapter tube 30. Also, the diameter of the inner bore section 211 is larger than the inner diameter of the nipple 30, so that the inner bore section 211 can be prevented from obstructing the fluid flow inside the nipple 30.

Specifically, solder is provided between the end surface of the adapter tube 30 and the stopper surface 213. By arranging the solder between the end surface of the connecting pipe 30 and the limiting surface 213, the excessive solder in the molten state can be ensured to enter the accommodating groove 2131 after the solder is heated, the solder in the molten state is prevented from flowing into the surface of the valve seat 20, and the service life of the four-way valve is prolonged. The solder can be in the form of a solder ring, and the diameter of the cross section of the solder ring is larger than the width of the opening of the accommodating groove 2131, so that the solder ring is prevented from falling into the accommodating groove 2131 before welding.

As shown in fig. 4, the end of the inner bore section 211 facing the valve chamber 11 has a chamfer 2111. The chamfer 2111 is provided, so that the flow area of the fluid can be increased, and the working performance of the four-way valve is improved.

Specifically, the adapter tube 30 has a tapered surface on the outer wall at one end thereof, and the tapered surface penetrates into the outer hole section 212. By providing the tapered surface on the outer wall of the one end of the adapter tube 30, the effective area for welding between the solder and the outer hole section 212 can be increased, thereby improving the welding quality. Moreover, the conical surface has a guiding function, so that the adapter tube 30 can be conveniently inserted into the outer hole section 212.

In this embodiment, there are a plurality of avoiding openings, a plurality of assembling holes 21, a plurality of connecting pipes 30, a plurality of assembling holes 21 and a plurality of avoiding openings, and a plurality of connecting pipes 30 and a plurality of assembling holes 21. By adopting the arrangement, the working performance of the four-way valve can be realized.

The four-way valve further comprises a sliding block, the sliding block is slidably arranged in the valve cavity 11, and the sliding block is provided with a communicating groove which is used for communicating at least two assembling holes 21. Through the arrangement, when reversing, the reversing of the four-way valve can be realized through the communication groove and the different assembly holes 21.

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 dual-purpose of one machine for refrigerating in summer and heating in winter is realized through the process.

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.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. 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 is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, 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 simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered 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.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature 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 term "above … …" can include both an orientation of "above … …" and "below … …". 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 have no 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 port is arranged on the side wall of the valve body (10);

the valve seat (20) is arranged in the valve cavity (11), the valve seat (20) is welded with the periphery of the avoidance port, the valve seat (20) is provided with an assembly hole (21), the assembly hole (21) comprises an inner hole section (211) and an outer hole section (212) which are communicated with each other, the inner hole section (211) is communicated with the valve cavity (11), the diameter of the inner hole section (211) is smaller than that of the outer hole section (212), the transition position of the inner hole section (211) and the outer hole section (212) is provided with a limiting surface (213), and the limiting surface (213) is provided with a receiving groove (2131) for receiving solder;

a connection pipe (30), a part of the connection pipe (30) penetrates into the outer hole section (212), and the connection pipe (30) and the valve seat (20) are welded.

2. The four-way valve according to claim 1, wherein the depth of the receiving groove (2131) in the axial direction of the nozzle (30) is 0.5 to 1 mm.

3. The four-way valve of claim 1, wherein the receiving groove (2131) is an annular groove, the receiving groove (2131) being disposed around the inner bore section (211).

4. The four-way valve according to claim 1, wherein the radial cross-section of the receiving groove (2131) has a rectangular, V-or U-shape.

5. The four-way valve according to claim 1, wherein the diameter of the inner bore section (211) is larger than the inner diameter of the nipple (30) and smaller than the outer diameter of the nipple (30).

6. The four-way valve according to claim 1, wherein a solder is provided between the end surface of the connection tube (30) and the stopper surface (213).

7. The four-way valve according to claim 1, wherein the inner bore section (211) has a chamfer (2111) at the end facing the valve chamber (11).

8. The four-way valve according to claim 1, wherein the outer wall of one end of the adapter tube (30) has a tapered surface thereon, and the tapered surface penetrates into the outer bore section (212).

9. The four-way valve according to claim 1, wherein the number of the avoiding openings is plural, the number of the fitting holes (21) is plural, the number of the connection pipes (30) is plural, the plurality of fitting holes (21) and the plurality of avoiding openings are arranged in a one-to-one correspondence, and the plurality of connection pipes (30) and the plurality of fitting holes (21) are arranged in a one-to-one correspondence.

10. The four-way valve according to claim 9, further comprising a slider slidably disposed in the valve chamber (11), the slider having a communication groove for communicating at least two of the fitting holes (21).