CN113390207A

CN113390207A - Gas-liquid separator

Info

Publication number: CN113390207A
Application number: CN202010172147.4A
Authority: CN
Inventors: 金海龙; 韦腾飞
Original assignee: Nanchang Zhonghao Machinery Co ltd
Current assignee: Nanchang Zhonghao Machinery Co ltd
Priority date: 2020-03-12
Filing date: 2020-03-12
Publication date: 2021-09-14

Abstract

The present invention provides a gas-liquid separator comprising: a body having a cavity; a refrigerant inlet pipe communicated with the main body and positioned at the upper end of the main body; the refrigerant outlet pipe is communicated with the main body and is positioned at the lower end of the main body, an oil return hole is formed in the refrigerant outlet pipe, and the oil return hole is positioned in the cavity; the fixing plate is arranged in the cavity, the fixing plate is provided with a through hole and a filtering hole, the refrigerant outlet pipe penetrates through the through hole, the fixing plate divides the cavity into a first cavity and a second cavity, and the fixing plate is positioned above the oil return hole; and the filter assembly is arranged at the filter hole. Through the technical scheme provided by the application, the problem that the structure of the gas-liquid separator in the prior art is complex can be solved.

Description

Gas-liquid separator

Technical Field

The invention relates to the technical field of gas-liquid separators, in particular to a gas-liquid separator.

Background

At present, current vapour and liquid separator includes the main part, advances the pipe, the exit tube, mounting and filter screen seat, wherein, advance pipe and exit tube respectively with the main part intercommunication, mounting and filter screen seat set up in the main part, the exit tube is worn to establish on the mounting, the mounting is used for the position of fixed exit tube in the main part, the filter screen seat is located into between pipe and the exit tube, the filter screen seat is used for filtering by advancing the foreign matter that the pipe flowed in, current vapour and liquid separator device structure is complicated, spare part is more, assembly time is long.

Disclosure of Invention

The invention provides a gas-liquid separator, which aims to solve the problem that the structure of the gas-liquid separator in the prior art is complex.

The present invention provides a gas-liquid separator, comprising: a body having a cavity; a refrigerant inlet pipe communicated with the main body and positioned at the upper end of the main body; the refrigerant outlet pipe is communicated with the main body and is positioned at the lower end of the main body, an oil return hole is formed in the refrigerant outlet pipe, and the oil return hole is positioned in the cavity; the fixing plate is arranged in the cavity, the fixing plate is provided with a through hole and a filtering hole, the refrigerant outlet pipe penetrates through the through hole, the fixing plate divides the cavity into a first cavity and a second cavity, and the fixing plate is positioned above the oil return hole; and the filter assembly is arranged at the filter hole.

Further, the filter assembly includes: the filter screen is arranged at the filter hole; the fixing piece is connected with the fixing plate and used for fixing the filter screen on the fixing plate.

Further, the refrigerant outlet pipe and the perforation are in interference fit.

Furthermore, the port of one end of the refrigerant inlet pipe, which is positioned in the cavity, is of a closed structure, a circulation hole is formed in the side wall of the refrigerant inlet pipe, and the refrigerant inlet pipe is communicated with the cavity through the circulation hole.

Furthermore, a plurality of circulation holes are arranged on the side wall of the refrigerant inlet pipe at even intervals.

Further, the sum of the cross-sectional areas of the plurality of circulation holes is equal to the cross-sectional area of the closed port of the refrigerant inlet pipe.

Further, the refrigerant outlet pipe comprises a straight pipe section, the straight pipe section is located in the cavity, and the axis of the straight pipe section coincides with the axis of the refrigerant inlet pipe.

Furthermore, the refrigerant outlet pipe also comprises a bent pipe section, one end of the bent pipe section is positioned in the cavity and connected with the straight pipe section, and the other end of the bent pipe section is positioned outside the cavity.

Further, the shortest interval between the end of the refrigerant inlet pipe and the end of the refrigerant outlet pipe is 5 to 30 mm.

Further, the main body includes: the refrigerant inlet pipe penetrates through the upper end cover and is welded with the upper end cover; the refrigerant outlet pipe penetrates through the lower end cover and is welded with the lower end cover; the upper end cover, the lower end cover and the middle cylinder body jointly enclose a cavity.

By applying the technical scheme of the invention, the gas-liquid separator comprises a main body, a refrigerant inlet pipe, a refrigerant outlet pipe and a fixing plate. The fixed plate is located in the cavity of the main body, the cavity is divided into a first cavity and a second cavity by the fixed plate, a filter hole is formed in the fixed plate, a filter assembly is arranged on the filter hole, and fluid flowing from the refrigerant inlet pipe is filtered by the filter assembly to avoid impurities from flowing into the oil return hole. Through the technical scheme that this application provided, with filtration on the fixed plate, need not additionally to set up solitary filter equipment and filter the fluid in the cavity, simplified the device structure, reduced spare part quantity, and then can reduce the assemble duration, improve assembly efficiency.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, 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 is a schematic diagram illustrating a gas-liquid separator according to an embodiment of the present invention;

fig. 2 shows a front view of the fixing plate of fig. 1;

fig. 3 shows a bottom view of the fixing plate of fig. 2.

Wherein the figures include the following reference numerals:

11. an upper end cover; 12. a lower end cover; 13. a middle cylinder body;

20. a refrigerant inlet pipe; 21. a flow-through hole;

30. a refrigerant outlet pipe; 31. an oil return hole; 32. a straight pipe section; 33. bending the pipe section;

40. a fixing plate; 41. perforating; 42. a filtration pore;

51. and (5) filtering by using a filter screen.

Detailed Description

The technical solutions 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, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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. 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, an embodiment of the present application provides a gas-liquid separator including: a body, a refrigerant inlet pipe 20, a refrigerant outlet pipe 30, and a fixing plate 40. Wherein the main body is provided with a cavity, and a refrigerant inlet pipe 20 is communicated with the main body and is positioned at the upper end of the main body; the refrigerant outlet pipe 30 is communicated with the main body and is positioned at the lower end of the main body, an oil return hole 31 is arranged on the refrigerant outlet pipe 30, and the oil return hole 31 is positioned in the cavity. The fixing plate 40 is disposed in the cavity, the fixing plate 40 has a through hole 41 and a filter hole 42, the refrigerant outlet pipe 30 is disposed in the through hole 41, the fixing plate 40 divides the cavity into a first chamber and a second chamber, the fixing plate 40 is located above the oil return hole 31, and the filter assembly is disposed at the filter hole 42.

The refrigerant inlet pipe 20 introduces a gas-liquid mixed refrigerant into the main cavity, the gaseous refrigerant flows out from the refrigerant outlet pipe 30 and enters the compressor, and the liquid refrigerant is gasified in the cavity and flows out from the refrigerant outlet pipe 30. The fixing plate 40 is fixed in the cavity, and the refrigerant outlet pipe 30 is fixed in the cavity by the fixing plate 40. The filter assembly is used for filtering impurities in the refrigerant to prevent the impurities from entering the circulation system through the oil return hole 31.

In the present embodiment, the gas-liquid separator includes a body, a refrigerant inlet pipe 20, a refrigerant outlet pipe 30, and a fixing plate 40. The fixing plate 40 is located in the cavity of the main body, the fixing plate 40 divides the cavity into a first cavity and a second cavity, the fixing plate 40 is provided with a filtering hole 42, the filtering hole 42 is provided with a filtering assembly, and the fluid flowing in from the refrigerant inlet pipe 20 is filtered by the filtering assembly to prevent impurities from flowing out from the oil return hole 31. Through the technical scheme that this application provided, set up filtration on fixed plate 40, need not additionally to set up solitary filter equipment and filter the fluid in the cavity, simplified the device structure, reduced spare part quantity, and then can reduce the assemble duration, improve assembly efficiency.

The number of the filter holes 42 may be plural, and the filter assembly may be provided in plural corresponding to the plural filter holes 42, or may be covered on the plural filter holes 42 by one filter assembly.

As shown in fig. 2 and 3, the filter assembly includes: filter screen 51 and mounting, filter screen 51 set up in filtration hole 42 department, filters liquid through filter screen 51, wherein, because the lower extreme setting of fixed plate 40 near the main part, in the actual operation in-process, filter screen 51 probably can immerse in liquid refrigerant, consequently, in this embodiment, filter screen 51 adopts the stainless steel screen cloth of high density to guarantee the life of spare part, and then can guarantee the performance of device. The fixing member is coupled to the fixing plate 40, and the fixing member is used to fix the filter net 51 to the fixing plate 40. The fixing member may be a fastening member or other connecting members, and in this embodiment, the fixing member is a fixing ring, the fixing ring is located at the periphery of the filter screen 51, and the fixing ring is welded to the fixing plate 40 to fix the filter screen 51 between the fixing member and the fixing plate 40.

The refrigerant outlet pipe 30 may be in clearance fit with the through hole 41, or may be in interference fit with the through hole. In the present embodiment, the refrigerant outlet pipe 30 is in interference fit with the through hole 41. Through this cooperation mode, can avoid refrigerant exit tube 30 to take place to rock, and then can avoid the noise that produces from this, improve product property ability.

In the present embodiment, a port of one end of the refrigerant inlet pipe 20 located in the cavity is a closed structure, a flow hole 21 is provided on a sidewall of the refrigerant inlet pipe 20, and the refrigerant inlet pipe 20 communicates with the cavity through the flow hole 21. With the structure, the refrigerant flows into the cavity through the circulation hole 21 on the side wall of the inlet pipe, so that the liquid refrigerant can be prevented from directly falling into the refrigerant outlet pipe 30 when flowing from the port, and the compressor can be protected.

Specifically, a plurality of flow holes 21 may be formed in the sidewall of the refrigerant inlet pipe 20, and the plurality of flow holes 21 are uniformly spaced apart from each other in the sidewall of the refrigerant inlet pipe 20. Therefore, the refrigerant can uniformly flow into the cavity, and the flowing performance of the fluid is ensured.

In the technical scheme, the existing refrigerant inlet pipe 20 can be modified to obtain the refrigerant inlet pipe 20 structure of the application, and in order to avoid influencing the original refrigerant flow and the whole circulation system, the sum of the cross sectional areas of the plurality of circulation holes 21 is equal to the cross sectional area of the closed port of the refrigerant inlet pipe 20, so that the condition that the refrigerant flows into the cavity through the refrigerant inlet pipe port is basically the same as the condition that the refrigerant flows into the cavity through the plurality of circulation holes 21.

In the present embodiment, the refrigerant outlet pipe 30 comprises a straight pipe section 32, the straight pipe section 32 is located in the cavity, and the axis of the straight pipe section 32 coincides with the axis of the refrigerant inlet pipe 20.

The refrigerant outlet pipe 30 further includes a bent pipe section 33, one end of the bent pipe section 33 is located in the cavity and connected to the straight pipe section 32, and the other end of the bent pipe section 33 is located outside the cavity. By this structure, the connection of the elbow section 33 to other devices can be facilitated. The straight pipe section 32 and the bent pipe section 33 may be two independent parts, and the two parts are in interference fit or welded during assembly, so that the assembly is facilitated.

Wherein the shortest interval between the end of the refrigerant inlet tube 20 and the end of the refrigerant outlet tube 30 is 5 to 30 mm. In the present embodiment, the interval between the lower end of the refrigerant inlet pipe 20 and the upper end of the straight pipe section 32 is set to 5 to 30 mm. Too close a distance affects the flow of gaseous refrigerant into the refrigerant outlet pipe 30, and too far a distance increases the possibility of liquid refrigerant flowing into the refrigerant outlet pipe 30.

Specifically, the main body includes: an upper end cover 11, a lower end cover 12 and a middle cylinder body 13. The refrigerant inlet pipe 20 penetrates through the upper end cover 11, and the refrigerant inlet pipe 20 is welded with the upper end cover 11; a refrigerant outlet pipe 30 penetrates through the lower end cover 12, and the refrigerant outlet pipe 30 is welded with the lower end cover 12; the upper end cover 11 and the lower end cover 12 are respectively connected with the middle cylinder body 13, and the upper end cover 11, the lower end cover 12 and the middle cylinder body 13 jointly enclose a cavity. Wherein, the upper end cover 11 is located at the upper end of the middle cylinder 13, the lower end cover 12 is located at the lower end of the middle cylinder 13, and the upper end cover 11 and the lower end cover 12 are respectively welded with the middle cylinder 13.

Through the technical scheme that this application provided, saved the filter screen seat among the prior art, directly set up filtration on the fixed plate, so can reduce spare part quantity, and then can reduce the assemble duration, improve assembly efficiency. In addition, the circulation hole 21 is formed in the refrigerant inlet pipe 20, so that the liquid refrigerant is prevented from directly flowing into the refrigerant outlet pipe 30, and the normal operation of the compressor is ensured. Through the gas-liquid separator provided by the application, the structure of the device can be simplified, the performance of the device is improved, and the normal operation of the system is ensured.

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.

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.

Claims

1. A gas-liquid separator, comprising:

a body having a cavity;

a refrigerant inlet pipe (20) communicating with the main body and located at an upper end of the main body;

the refrigerant outlet pipe (30) is communicated with the main body and is positioned at the lower end of the main body, an oil return hole (31) is formed in the refrigerant outlet pipe (30), and the oil return hole (31) is positioned in the cavity;

the fixing plate (40) is arranged in the cavity, the fixing plate (40) is provided with a through hole (41) and a filtering hole (42), the refrigerant outlet pipe (30) penetrates through the through hole (41), the fixing plate (40) divides the cavity into a first cavity and a second cavity, and the fixing plate (40) is positioned above the oil return hole (31);

a filter assembly disposed at the filter aperture (42).

2. The gas-liquid separator of claim 1, wherein the filter assembly comprises:

a filter screen (51) disposed at the filter hole (42);

the fixing piece is connected with the fixing plate (40) and used for fixing the filter screen (51) on the fixing plate (40).

3. The gas-liquid separator according to claim 1, wherein the refrigerant outlet pipe (30) is in interference fit with the perforations (41).

4. The gas-liquid separator according to claim 1, wherein a port of one end of the refrigerant inlet pipe (20) located in the cavity is a closed structure, a circulation hole (21) is provided on a side wall of the refrigerant inlet pipe (20), and the refrigerant inlet pipe (20) communicates with the cavity through the circulation hole (21).

5. The gas-liquid separator according to claim 4, wherein a plurality of the circulation holes (21) are provided, and a plurality of the circulation holes (21) are provided at regular intervals on a sidewall of the refrigerant inlet pipe (20).

6. The gas-liquid separator according to claim 5, wherein a sum of cross-sectional areas of a plurality of said circulation holes (21) is equal to a cross-sectional area of a closed port of said refrigerant inlet pipe (20).

7. The gas-liquid separator according to claim 1, wherein said refrigerant outlet tube (30) comprises a straight tube section (32), said straight tube section (32) being located within said cavity, the axis of said straight tube section (32) coinciding with the axis of said refrigerant inlet tube (20).

8. The gas-liquid separator according to claim 7, wherein said refrigerant outlet tube (30) further comprises a bent tube section (33), one end of said bent tube section (33) being located within said cavity and connected to said straight tube section (32), the other end of said bent tube section (33) being located outside said cavity.

9. The gas-liquid separator according to claim 1, wherein a shortest interval between an end of the refrigerant inlet pipe (20) and an end of the refrigerant outlet pipe (30) is 5 to 30 mm.

10. The gas-liquid separator of claim 1, wherein the body comprises:

the refrigerant inlet pipe (20) penetrates through the upper end cover (11), and the refrigerant inlet pipe (20) is welded with the upper end cover (11);

the refrigerant outlet pipe (30) penetrates through the lower end cover (12), and the refrigerant outlet pipe (30) is welded with the lower end cover (12);

the upper end cover (11) and the lower end cover (12) are respectively connected with the middle cylinder body (13), and the upper end cover (11), the lower end cover (12) and the middle cylinder body (13) jointly enclose the cavity.