WO2021180213A1

WO2021180213A1 - Gas-liquid separator

Info

Publication number: WO2021180213A1
Application number: PCT/CN2021/080519
Authority: WO
Inventors: 金海龙; 韦腾飞
Original assignee: 浙江盾安人工环境股份有限公司
Priority date: 2020-03-12
Filing date: 2021-03-12
Publication date: 2021-09-16
Also published as: KR20220146606A; JP2023517837A

Abstract

The present application provides a gas-liquid separator. The gas-liquid separator comprises: a main body having a cavity; a refrigerant inlet pipe communicated with the main body and located on the upper end of the main body; a refrigerant outlet pipe communicated with the main body and located on the lower end of the main body, the refrigerant outlet pipe being provided with an oil return hole, and the oil return hole is located in the cavity; a fixed plate provided in the cavity, the fixed plate having a through hole and a filtering hole, the refrigerant outlet pipe penetrating the through hole, the fixed plate dividing the cavity into a first chamber and a second chamber, and the fixed plate being located above the oil return hole; and a filtering assembly provided at the filtering hole. The technical solution provided by the present application can solve the problem in the related art that a gas-liquid separator is complex in structure.

Description

Gas-liquid separator

This application claims the priority of the patent application filed to the State Intellectual Property Office of China on March 12, 2020, the application number is 202010172147.4, and the invention-creation name is "Gas-Liquid Separator", and it is filed on March 12, 2020 to Priority of the patent application of the State Intellectual Property Office of China, the application number is 202020306914.1, and the invention and creation name is "gas-liquid separator".

Technical field

This application relates to the technical field of gas-liquid separators, and in particular to a gas-liquid separator.

Background technique

At present, the existing gas-liquid separator includes a main body, an inlet pipe, an outlet pipe, a fixing piece, and a filter seat. The inlet pipe and the outlet pipe are respectively connected to the main body, the fixing piece and the filter seat are arranged in the main body, and the outlet pipe Pass through the fixing part, the fixing part is used to fix the position of the outlet pipe in the main body, the filter seat is located between the inlet pipe and the outlet pipe, and the filter seat is used to filter the foreign matter flowing in from the inlet pipe, the existing gas and liquid The separator device has a complicated structure, many parts and a long assembly time.

Summary of the invention

The present application provides a gas-liquid separator to solve the problem of complicated structure of the gas-liquid separator in the related art.

The present application provides a gas-liquid separator. The gas-liquid separator includes: a main body with a cavity; a refrigerant inlet pipe connected to the main body and located at the upper end of the main body; a refrigerant outlet pipe communicating with the main body and located in the main body The lower end of the refrigerant outlet pipe is provided with an oil return hole, which is located in the cavity; the fixing plate is arranged in the cavity, the fixing plate has perforations and filter holes, and the refrigerant outlet pipe is inserted in the perforation and fixed The plate divides the cavity into a first chamber and a second chamber, the fixed plate is located above the oil return hole; the filter assembly is arranged at the filter hole.

Further, the filter assembly includes: a filter screen arranged at the filter hole; a fixing part connected with the fixing plate, and the fixing part is used to fix the filter screen on the fixing plate.

Further, the refrigerant outlet pipe and the perforation have an interference fit.

Further, the port of the end of the refrigerant inlet pipe located in the cavity is a closed structure, the side wall of the refrigerant inlet pipe is provided with a circulation hole, and the refrigerant inlet pipe communicates with the cavity through the circulation hole.

Further, there are a plurality of circulation holes, and the plurality of circulation holes are evenly spaced on the side wall of the refrigerant inlet pipe.

Further, the sum of the cross-sectional area 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 includes 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.

Further, the refrigerant outlet pipe further includes a bent pipe section, one end of the bent pipe section is located in the cavity and connected to the straight pipe section, and the other end of the bent pipe section is located 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: an upper end cover, the refrigerant inlet pipe is pierced on the upper end cover, and the refrigerant inlet pipe is welded to the upper end cover; Welding; the middle cylinder body, the upper end cover and the lower end cover are respectively connected with the middle cylinder body, and the upper end cover, the lower end cover and the middle cylinder body jointly enclose a cavity.

Applying the technical solution of the present application, the gas-liquid separator includes a main body, a refrigerant inlet pipe, a refrigerant outlet pipe, and a fixed plate. Wherein, the fixed plate is located in the cavity of the main body, and the fixed plate divides the cavity into a first chamber and a second chamber. The fluid flowing in the refrigerant inlet pipe is filtered to prevent impurities from flowing into the oil return hole. According to the technical solution provided by the present application, the filter structure is arranged on the fixed plate without additional separate filter device to filter the fluid in the cavity, the device structure is simplified, the number of parts is reduced, and the assembly time can be reduced. , Improve assembly efficiency.

Description of the drawings

The drawings of the specification forming a part of the application are used to provide a further understanding of the application, and the exemplary embodiments and descriptions of the application are used to explain the application, and do not constitute an improper limitation of the application. In the attached picture:

Figure 1 shows a schematic structural diagram of a gas-liquid separator according to an embodiment of the present application;

Figure 2 shows a front view of the fixing plate in Figure 1;

Fig. 3 shows a bottom view of the fixing plate in Fig. 2.

Among them, the above drawings include the following reference signs:

11. Upper end cover; 12. Lower end cover; 13. Middle cylinder;

20. Refrigerant inlet pipe; 21. Circulation hole;

30. Refrigerant outlet pipe; 31. Oil return hole; 32. Straight pipe section; 33. Elbow pipe section;

40. Fixed plate; 41. Perforation; 42, filter hole;

51. Filter.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative, and in no way serves as any restriction on the application and its application or use. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

As shown in FIG. 1, an embodiment of the present application provides a gas-liquid separator. The gas-liquid separator includes a main body, a refrigerant inlet pipe 20, a refrigerant outlet pipe 30 and a fixed plate 40. The main body has a cavity, the refrigerant inlet pipe 20 communicates with the main body and is located at the upper end of the main body; the refrigerant outlet pipe 30 communicates with the main body and is located at the lower end of the main body, and the refrigerant outlet pipe 30 is provided with an oil return hole 31, The oil return hole 31 is located in the cavity. The fixing plate 40 is arranged in the cavity. The fixing plate 40 has a perforation 41 and a filter hole 42. The refrigerant outlet pipe 30 is inserted in the perforation 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 arranged at the filter hole 42.

Among them, the refrigerant inlet pipe 20 introduces a gas-liquid mixed refrigerant into the main cavity, and the gaseous refrigerant flows out of the refrigerant outlet pipe 30 into the compressor, and the liquid refrigerant is vaporized in the cavity and then cooled by the refrigerant. The agent outlet pipe 30 flows out. 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 to filter impurities in the refrigerant to prevent impurities from entering the circulation system through the oil return hole 31.

In this embodiment, the gas-liquid separator includes a main body, a refrigerant inlet pipe 20, a refrigerant outlet pipe 30, and a fixed plate 40. Wherein, the fixed plate 40 is located in the cavity of the main body, and the fixed plate 40 divides the cavity into a first chamber and a second chamber. The fixed plate 40 is provided with a filter hole 42 and a filter assembly is provided on the filter hole 42. The filter assembly is used to filter the fluid flowing in from the refrigerant inlet pipe 20 to prevent impurities from flowing out of the oil return hole 31. According to the technical solution provided by the present application, the filter structure is arranged on the fixed plate 40, and there is no need to additionally provide a separate filter device to filter the fluid in the cavity, which simplifies the device structure, reduces the number of parts, and thus can reduce assembly Time to improve assembly efficiency.

Wherein, multiple filter holes 42 can be provided, and multiple filter components can be provided corresponding to multiple filter holes 42 or can be covered on multiple filter holes 42 by one filter component.

As shown in Figures 2 and 3, the filter assembly includes: a filter screen 51 and a fixing member. The filter screen 51 is arranged at the filter hole 42, and the liquid is filtered through the filter screen 51. The fixing plate 40 is close to the lower end of the main body. In the actual operation process, the filter screen 51 may be immersed in the liquid refrigerant. Therefore, in this embodiment, the filter screen 51 is made of high-density stainless steel mesh to ensure the service life of the parts and thus to ensure The performance of the device. The fixing piece is connected with the fixing plate 40, and the fixing piece is used to fix the filter screen 51 on the fixing plate 40. The fixing member may be a fastener or other connecting member. In this embodiment, the fixing member is a fixing ring, which is located on the outer periphery of the filter screen 51, and the fixing ring is welded to the fixing plate 40 to fix the filter screen 51 in Between the fixing member and the fixing plate 40.

Wherein, the refrigerant outlet pipe 30 and the perforation 41 may be a clearance fit or an interference fit. In this embodiment, the refrigerant outlet pipe 30 and the perforation 41 are interference fit. Through this method of cooperation, it is possible to avoid shaking of the refrigerant outlet pipe 30, thereby avoiding the noise generated thereby and improving the performance of the product.

In this embodiment, the port of the end of the refrigerant inlet pipe 20 located in the cavity is a closed structure, and the side wall of the refrigerant inlet pipe 20 is provided with a circulation hole 21. The cavity is connected. With the above structure, the refrigerant flows into the cavity through the circulation hole 21 on the side wall of the inlet pipe, which can prevent the liquid refrigerant from directly falling into the refrigerant outlet pipe 30 when it flows in from the port, so as to protect the compressor.

Specifically, a plurality of circulation holes 21 on the side wall of the refrigerant inlet pipe 20 may be provided, and the plurality of circulation holes 21 are evenly arranged on the side wall of the refrigerant inlet pipe 20. In this way, the refrigerant can evenly flow into the cavity, and the fluid flow performance can be ensured.

In this technical solution, the existing refrigerant inlet pipe 20 can be modified to obtain the refrigerant inlet pipe 20 structure of the present application. In order to avoid affecting the original refrigerant flow and the overall circulation system, multiple circulation The sum of the cross-sectional area of the hole 21 is equal to the cross-sectional area of the closed port of the refrigerant inlet pipe 20, which ensures that the refrigerant flows into the cavity through the refrigerant inlet pipe port and the refrigerant flows into the cavity through the plurality of circulation holes 21 basically the same.

In this embodiment, the refrigerant outlet pipe 30 includes a straight pipe section 32 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 also includes an elbow section 33, one end of the elbow section 33 is located in the cavity and connected to the straight pipe section 32, and the other end of the elbow section 33 is located outside the cavity. With this structure, the elbow section 33 can be easily connected with other devices. Among them, the straight pipe section 32 and the elbow pipe section 33 can be two independent parts, and the two can be interference fit or welded during assembly to facilitate assembly.

The shortest interval between the end of the refrigerant inlet pipe 20 and the end of the refrigerant outlet pipe 30 is 5 to 30 mm. In this 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 at 5 to 30 mm. Too close a distance will affect the gas refrigerant flowing into the refrigerant outlet pipe 30, and a too far distance will increase 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 13. The refrigerant inlet pipe 20 passes through the upper end cover 11, and the refrigerant inlet pipe 20 is welded to the upper end cover 11; the refrigerant outlet pipe 30 passes through the lower end cover 12, and the refrigerant outlet pipe 30 is welded to the lower end cover 12; the upper end cover 11 and the lower end cover 12 are respectively connected to 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. The upper end cover 11 is located at the upper end of the middle cylinder body 13, the lower end cover 12 is located at the lower end of the middle cylinder body 13, and the upper end cover 11 and the lower end cover 12 are welded to the middle cylinder body 13 respectively.

Through the technical solution provided by the present application, the filter seat in the related technology is omitted, and the filter structure is directly arranged on the fixed plate. In this way, the number of parts can be reduced, and the assembly time can be reduced, and the assembly efficiency can be improved. In addition, by providing the circulation hole 21 on the refrigerant inlet pipe 20, it is possible to prevent the liquid refrigerant from directly flowing into the refrigerant outlet pipe 30, thereby ensuring the normal operation of the compressor. The gas-liquid separator provided in the present application can simplify the structure of the device, improve the performance of the device, and ensure the normal operation of the system.

It should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprising" and/or "including" are used in this specification, they indicate There are features, steps, operations, devices, components, and/or combinations thereof.

Unless specifically stated otherwise, the relative arrangement of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The technologies, methods, and equipment known to those of ordinary skill in the relevant fields may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be regarded as part of the authorization specification. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiment may have different values. It should be noted that similar reference numerals and letters indicate similar items in the following figures, so once an item is defined in one figure, it does not need to be further discussed in the following figures.

In the description of this application, it needs to be understood that orientation words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" and other directions indicate the orientation Or positional relationship is usually based on the positional or positional relationship shown in the drawings, which is only used to facilitate the description of the application and simplify the description. Unless otherwise stated, these positional words do not indicate or imply the pointed device or element It must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as a limitation of the scope of protection of the present application; the orientation word "inside, outside" refers to the inside and outside relative to the contour of each component itself.

For ease of description, spatial relative terms can be used here, such as "above", "above", "above the surface", "above", etc., to describe as shown in the figure Shows the spatial positional relationship between one device or feature and other devices or features. It should be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation of the device described in the figure. For example, if the device in the drawing is turned upside down, then a device described as "above other devices or structures" or "above other devices or structures" will then be positioned as "below the other devices or structures" or "on Under other devices or structures". Thus, the exemplary term "above" may include both orientations "above" and "below". The device can also be positioned in other different ways (rotated by 90 degrees or in other orientations), and the relative description of the space used here will be explained accordingly.

In addition, it should be noted that the use of terms such as “first” and “second” to define parts is only for the convenience of distinguishing the corresponding parts. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood. To limit the scope of protection of this application.

The above descriptions are only preferred embodiments of the application, and are not intended to limit the application. For those skilled in the art, the application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the protection scope of this application.

Claims

A gas-liquid separator, wherein the gas-liquid separator includes:

The main body has a cavity;

The refrigerant inlet pipe (20) is in communication with the main body and is located at the upper end of the main body;

The refrigerant outlet pipe (30) communicates with the main body and is located at the lower end of the main body. The refrigerant outlet pipe (30) is provided with an oil return hole (31), and the oil return hole (31) is located Inside the cavity;

The fixing plate (40) is arranged in the cavity, the fixing plate (40) has a perforation (41) and a filter hole (42), and the refrigerant outlet pipe (30) penetrates the perforation (41). In), the fixed plate (40) divides the cavity into a first chamber and a second chamber, and the fixed plate (40) is located above the oil return hole (31);

The filter component is arranged at the filter hole (42).
The gas-liquid separator according to claim 1, wherein the filter assembly comprises:

The filter screen (51) is arranged at the filter hole (42);

A fixing piece is connected with the fixing plate (40), and the fixing piece is used to fix the filter screen (51) on the fixing plate (40).
The gas-liquid separator according to claim 1, wherein the refrigerant outlet pipe (30) and the perforation (41) have an interference fit.
The gas-liquid separator according to claim 1, wherein the port of the refrigerant inlet pipe (20) at one end of the cavity is a closed structure, and the side wall of the refrigerant inlet pipe (20) A circulation hole (21) is provided on the upper part, and the refrigerant inlet pipe (20) communicates with the cavity through the circulation hole (21).
The gas-liquid separator according to claim 4, wherein a plurality of said circulation holes (21) are provided, and a plurality of said circulation holes (21) are evenly arranged on the side of said refrigerant inlet pipe (20) On the wall.
The gas-liquid separator according to claim 5, wherein 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).
The gas-liquid separator according to claim 1, wherein the refrigerant outlet pipe (30) comprises a straight pipe section (32), the straight pipe section (32) is located in the cavity, and the straight pipe section (32) The axis of) coincides with the axis of the refrigerant inlet pipe (20).
The gas-liquid separator according to claim 7, wherein the refrigerant outlet pipe (30) further comprises an elbow section (33), one end of the elbow section (33) is located in the cavity and is connected to The straight pipe section (32) is connected, and the other end of the bent pipe section (33) is located outside the cavity.
The gas-liquid separator according to claim 1, wherein the shortest interval between the end of the refrigerant inlet pipe (20) and the end of the refrigerant outlet pipe (30) is 5 to 30 mm.
The gas-liquid separator according to claim 1, wherein the main body comprises:

The upper end cover (11), the refrigerant inlet pipe (20) passes through the upper end cover (11), and the refrigerant inlet pipe (20) is welded to the upper end cover (11);

The lower end cover (12), the refrigerant outlet pipe (30) is passed through the lower end cover (12), and the refrigerant outlet pipe (30) is welded to the lower end cover (12);

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