CN114739059A

CN114739059A - Liquid accumulator air suction pipe and compressor

Info

Publication number: CN114739059A
Application number: CN202110017531.1A
Authority: CN
Inventors: 王艳珍; 周易; 李媛媛; 刘春慧
Original assignee: Shanghai Highly Electrical Appliances Co Ltd
Current assignee: Shanghai Highly Electrical Appliances Co Ltd
Priority date: 2021-01-07
Filing date: 2021-01-07
Publication date: 2022-07-12

Abstract

The invention provides a liquid storage device air suction pipe and a compressor, wherein the liquid storage device comprises an air suction pipe, the air suction pipe is arranged in an inner cavity of the liquid storage device, the air suction pipe comprises a connecting ring, an air pipe and a flaring, the flaring is tubular, one end of the air pipe is connected with the connecting ring, the other end of the air pipe is connected with the flaring, the connecting ring is connected with the bottom of the liquid storage device, the air pipe is arranged in the inner cavity of the liquid storage device, the pipe diameter of one end, close to the air pipe, of the flaring is A, the pipe diameter of the air pipe is B, and the A is larger than or equal to the B. The invention reduces the pressure loss between the filter screen bracket and the air suction pipe and improves the performance of the compressor.

Description

Liquid accumulator air suction pipe and compressor

Technical Field

The invention relates to the field of compressors, in particular to a liquid accumulator air suction pipe capable of reducing pressure drop and a compressor with the same.

Background

The liquid storage device (also called liquid storage cylinder) in the refrigerating system is arranged between the evaporator and the suction port of the compressor cylinder and belongs to a part of the compressor.

The liquid storage device is an indispensable component of the compressor, plays roles of storage, gas-liquid separation, filtration, noise reduction and refrigerant buffering, and comprises parts such as an air inlet pipe, a cylinder body, a filter screen bracket, an air suction pipe and the like.

As shown in fig. 1 and 2, a pressure loss occurs when the refrigerant passes through the accumulator, so that the performance of the compressor is degraded.

The shape of the air suction pipe 1 in the prior art is cylindrical, and the air suction pipe is a pipe with the same pipe diameter. The simulation calculation shows that the pressure loss from the filter screen bracket to the air suction pipe is relatively large.

For this reason, those skilled in the art have made an effort to develop an accumulator suction pipe and a compressor having the same, which can reduce a pressure loss from a screen bracket to a suction pipe and improve performance of the compressor.

Disclosure of Invention

In view of the problems in the prior art, an object of the present invention is to provide a suction pipe of a liquid accumulator and a compressor having the same, so that pressure loss between a filter screen bracket and the suction pipe is reduced, and the performance of the compressor is improved.

According to one aspect of the invention, the liquid storage device air suction pipe is suitable for a liquid storage device of a compressor, the liquid storage device comprises the air suction pipe, the air suction pipe is arranged in an inner cavity of the liquid storage device, the air suction pipe comprises a connecting ring, an air pipe and a flaring, the flaring is tubular, one end of the air pipe is connected with the connecting ring, the other end of the air pipe is connected with the flaring, the connecting ring is connected with the bottom of the liquid storage device, the air pipe is arranged in the inner cavity of the liquid storage device, the pipe diameter of one end, close to the air pipe, of the flaring is A, the pipe diameter of the air pipe is B, and the A is larger than or equal to B.

Preferably: the A: and B is 1.2-1.8: 1.

preferably: the pipe diameter of the flaring is gradually increased along the direction from the air pipe to the top of the liquid storage device.

Preferably: the side surface of the flaring is a linear inclined surface.

Preferably: the side surface of the flaring is an arc-shaped inclined surface.

Preferably: the pipe diameter at the flaring opening is A ', and the ratio of A': and B is 1.2-1.8: 1.

preferably, the following components: the connecting ring of the air suction pipe is fixedly and hermetically connected with the bottom of the liquid storage device.

Preferably, the following components: the inner cavity of the liquid storage device is also provided with a partition plate, the partition plate is provided with a through hole, the air pipe of the air suction pipe is sleeved in the through hole of the partition plate, and the air pipe of the air suction pipe is in clearance fit with the through hole.

Preferably: the top of the liquid storage device is also provided with an air inlet pipe.

According to another aspect of the present invention, there is provided a compressor including an accumulator having the accumulator suction pipe described above.

According to the liquid accumulator air suction pipe and the compressor with the same, the pressure loss between the filter screen support and the air suction pipe is reduced, and the performance of the compressor is improved.

Drawings

Other features, objects and advantages of the present invention will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of a prior art compressor accumulator;

FIG. 2 is a schematic view of a suction line of a compressor accumulator of the prior art;

fig. 3 is a schematic cross-sectional structure of a reservoir of an embodiment of the invention;

FIG. 4 is a schematic view of the configuration of the air suction duct of the accumulator according to the embodiment of the present invention;

FIG. 5 is a schematic view of a suction tube of the accumulator according to another embodiment of the present invention;

FIG. 6 is a schematic view of a suction tube of the accumulator according to another embodiment of the present invention;

fig. 7 is a schematic view of a suction pipe of an accumulator according to another embodiment of the present invention.

Reference numerals

1 suction pipe of the prior art

2 liquid reservoir

21 bottom of the reservoir

22 reservoir top

3 air suction pipe

31 connecting ring

32 trachea

33 flaring

4 partition board

5 Filter screen

6 air inlet pipe

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted.

As shown in fig. 3, in an embodiment of the present invention, an accumulator suction pipe and a compressor having the same, preferably a rotary rotor compressor, are provided.

The reservoir 2 comprises a bottom 21 and a top 22. An air suction pipe 3, a partition plate 4 and a filter screen 5 are arranged in the inner cavity of the liquid storage device 2. The top 22 is also connected to an inlet pipe 6.

In the present invention, "top" refers to a portion of a component in an upper direction in the drawing when the reservoir shown in fig. 3 is placed, and "bottom" refers to a portion of a component in a lower direction in the drawing when the reservoir shown in fig. 3 is placed.

And in combination, as shown in fig. 4, the suction pipe 3 includes a connecting ring 31, a gas pipe 32 and a flare 33.

The flaring is that the pipe diameter at the outlet of the pipeline is larger than that at the non-outlet, so that the pipe diameter at the outlet of the pipeline is enlarged to form an enlarged outlet which is the flaring.

The flare 33 is tubular in shape and is the outlet portion of the suction pipe 3.

One end of the air tube 32 is connected to the connecting ring 31, and the other end of the air tube 32 is connected to the flare 33. And preferably the connection ring 31, the air tube 32 and the flared opening 33 are fixedly connected or integrally formed. It is further preferred that the coupling ring 31 is formed by flaring one end of the air tube 32.

And in combination with the fact that as shown in figure 3, the coupling ring 31 is connected, preferably fixed and hermetically, to the bottom 21 of the reservoir 2, the air tube 32 being provided in the inner cavity of the reservoir 2.

As shown in FIG. 4, flare 33 has a tube diameter A, and trachea 32 has a tube diameter B, with A being greater than B.

The embodiment of the invention reduces the pressure loss between the filter screen bracket and the air suction pipe and improves the performance of the compressor.

As shown in fig. 4, in the embodiment of the present invention, it is preferable that the ratio a of the pipe diameter of the flare 33 to the air pipe 32: b is 1.2-1.8: 1. preferably 1.4-1.6: 1.

as shown in fig. 5-7, in the embodiment of the present invention, the pipe diameter of the flaring 33 is preferably gradually increased along the direction from the air pipe 32 to the top 22 of the reservoir 2, i.e. the pipe diameter from bottom to top is gradually increased, so as to reduce the pressure drop. The diameter of the end of the flared end 33 near the air tube 32 is a, the diameter of the air tube 32 is B, and a is equal to or greater than B.

In the embodiment of the present invention, as shown in fig. 5, the side of flared mouth 33 is preferably a straight slope, i.e. flared mouth 33 is in the shape of a truncated cone.

As shown in fig. 6-7, in the embodiment of the present invention, the side of the flare 33 is preferably an arc-shaped slope, and is preferably an arc-shaped slope that is curved outward or inward.

As shown in fig. 5-7, in the embodiment of the present invention, it is preferable that the tube diameter at the opening of the flare 33 is a ', a': b is 1.2-1.8: 1. preferably 1.4-1.6: 1.

as shown in fig. 3, the connecting ring 31 of the suction pipe 3 is fixed and hermetically connected with the bottom 21 of the reservoir 2.

The air pipe 32 of the air suction pipe 3 is positioned in the inner cavity of the liquid storage device 2, sleeved in the through hole of the partition plate 4 and in clearance fit with the through hole of the partition plate 4.

The invention is described below in specific examples:

example 1

As shown in fig. 3 and 4, an accumulator suction pipe and a compressor having the same include an accumulator 2.

The air suction pipe 3 comprises a connecting ring 31, an air pipe 32 and a flaring 33 which are connected in sequence. The connecting ring 31, the air pipe 32 and the flaring 33 are fixedly connected.

The connecting ring 31 of the air suction pipe 3 is fixedly and hermetically connected with the bottom 21 of the liquid reservoir 2.

The flare 33 is cylindrical in shape. The ratio between the pipe diameter a of the flare 33 and the pipe diameter B of the trachea 32 is 1.2: 1.

example 2

As shown in fig. 3 and 5, an accumulator suction pipe and a compressor having the same include an accumulator 2.

The air suction pipe 3 comprises a connecting ring 31, an air pipe 32 and a flaring 33 which are connected in sequence. The coupling ring 31, the air tube 32 and the flare 33 are integrally formed.

The shape of the flare 33 is a truncated cone. The pipe diameter of the flare 33 gradually increases in the direction from the air pipe 32 to the top 22 of the reservoir 2.

The ratio of the pipe diameter A' of the opening of the flaring 33 to the pipe diameter B of the air pipe 32 is 1.4: 1.

example 3

As shown in fig. 3 and 6, an accumulator suction pipe and a compressor having the same include an accumulator 2 therein.

The flare 33 is flared in shape. The pipe diameter of the flare 33 gradually increases in the direction from the air pipe 32 to the top 22 of the reservoir 2.

The ratio of the pipe diameter A' of the opening of the flaring 33 to the pipe diameter B of the air pipe 32 is 1.6: 1.

example 4

As shown in fig. 3 and 7, an accumulator suction pipe and a compressor having the same include an accumulator 2.

The flare 33 is bowl-shaped. The pipe diameter of the flare 33 gradually increases in the direction from the air pipe 32 to the top 22 of the reservoir 2.

The ratio of the pipe diameter A' of the opening of the flaring 33 to the pipe diameter B of the air pipe 32 is 1.8: 1.

comparative example 1

A liquid accumulator air suction pipe and a compressor with the same are provided:

the shape of the air suction pipe is a circular truncated cone, and the pipe diameter of one end of the air suction pipe is the same as that of the other end of the air suction pipe.

The ratio of the pipe diameter of the air suction pipe to the pipe diameter B is 1: 1.

the results of the pressure loss calculation for the reservoirs of examples 1-4 and comparative example 1 under A/T conditions (standard conditions) are shown in the following table:

from the above table, it can be seen that: compared with the air suction pipe with the same pipe diameter, the pressure loss after the air suction pipe of the embodiment 1-4 under the A/T working condition can be reduced by 1080.31-1110.31 Pa, and the power consumption can be reduced by 1.066-1.095W.

In summary, the liquid accumulator suction pipe, the liquid accumulator with the same and the compressor provided by the embodiments of the invention reduce the pressure loss between the filter screen bracket and the suction pipe, and improve the performance of the compressor.

The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims

1. The utility model provides a reservoir breathing pipe, is applicable to the reservoir of compressor, include breathing pipe (3) in reservoir (2), breathing pipe (3) are located in the inner chamber of reservoir (2), its characterized in that, breathing pipe (3) include coupling ring (31), trachea (32) and flaring (33), the shape of flaring (33) is the tubulose, the one end of trachea (32) with coupling ring (31) are connected, the other end of trachea (32) with flaring (33) link to each other, coupling ring (31) with the bottom (21) of reservoir (2) are connected, trachea (32) are located in the inner chamber of reservoir (2), the pipe diameter that flaring (33) are close to the one end of trachea (32) is A, the pipe diameter of trachea (32) is B, A be greater than or equal to B.

2. The accumulator suction duct of claim 1, wherein: the A: and B is 1.2-1.8: 1.

3. the accumulator suction duct of claim 1, wherein: the pipe diameter of the flaring (33) gradually increases along the direction from the air pipe (32) to the top (22) of the liquid storage device (2).

4. The accumulator suction duct of claim 3, wherein: the side surface of the flaring (33) is a linear inclined surface.

5. The accumulator suction duct of claim 3, wherein: the side surface of the flaring (33) is an arc-shaped inclined surface.

6. The accumulator suction duct of claim 3, wherein: the pipe diameter at the opening of the flaring (33) is A ', and the ratio of A': and B is 1.2-1.8: 1.

7. the accumulator suction duct of claim 1, wherein: and the connecting ring (31) of the air suction pipe (3) is fixedly and hermetically connected with the bottom (21) of the liquid storage device (2).

8. The accumulator suction duct of claim 1, wherein: the air suction device is characterized in that a partition plate (4) is further arranged in the inner cavity of the liquid storage device (2), a through hole is formed in the partition plate (4), an air pipe (32) of the air suction pipe (3) is sleeved in the through hole of the partition plate (4), and the air pipe (32) of the air suction pipe (3) is in clearance fit with the through hole.

9. The accumulator suction duct of claim 1, wherein: the top (22) of the liquid storage device (2) is also provided with an air inlet pipe (6).

10. A compressor, characterized by: comprising an accumulator air intake duct according to any one of claims 1 to 9.