CN110953157B

CN110953157B - Compressor and refrigeration equipment

Info

Publication number: CN110953157B
Application number: CN201911285126.7A
Authority: CN
Inventors: 蔡俊勇; 朱伟; 侯平; 丁学超
Original assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Landa Compressor Co Ltd
Current assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Landa Compressor Co Ltd
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2025-10-21
Anticipated expiration: 2039-12-13
Also published as: CN110953157A

Abstract

The invention discloses a compressor and refrigeration equipment, wherein the compressor comprises a shell component, an upper cavity, a middle cavity and a lower cavity are sequentially formed in the shell component from top to bottom, an oil pool is arranged in the lower cavity and used for supplying oil to the compressor, the middle cavity comprises an inner cavity and an outer cavity, the inner cavity is positioned in the center of the outer cavity, a liquid storage device is arranged in the outer cavity, a pump body component is arranged in the inner cavity, and a motor component is arranged in the upper cavity. According to the compressor disclosed by the invention, the liquid reservoir is arranged in the compressor, and the motor component and the pump body component are separated, so that the space is saved, and the compression efficiency is higher.

Description

Compressor and refrigeration equipment

Technical Field

The invention belongs to the field of refrigeration, and particularly relates to a compressor and refrigeration equipment.

Background

The reservoir of the rotary compressor of the prior art is mostly located outside the compressor and isolated separately. The reservoir is located outside the compressor and is prone to the following problems:

1. The liquid reservoir vibrates and is noisy. In the prior art, because the air inlet of the compressor is positioned on the liquid storage device which is separated independently, the vibration can be larger due to the fact that the mass of the liquid storage device is smaller and the influence of air suction pulsation is added.

2. The pump body motor and the oil pool are integrated. In the prior art, as the pump body motor oil tank is positioned in the same cavity, the temperature of the frozen oil and the temperature of the pump body working cavity are easy to rise due to the rising of the temperature of the motor winding, the viscosity of the frozen oil is reduced due to the overhigh temperature of the oil, and the leakage is increased. Excessive pump body temperature can lead to reduced volumetric efficiency and parts are subject to wear and deformation.

3. The liquid storage device occupies a large refrigerating equipment system space.

Disclosure of Invention

The invention aims to provide a compressor and refrigeration equipment, which are integrally arranged to solve the technical problems.

In order to achieve the above purpose, the specific technical scheme of the compressor and the refrigeration equipment of the invention is as follows:

a compressor comprises a shell assembly, wherein an upper cavity, a middle cavity and a lower cavity are sequentially formed in the shell assembly from top to bottom, an oil pool is arranged in the lower cavity and used for supplying oil for the compressor, the middle cavity comprises an inner cavity and an outer cavity, the inner cavity is located in the center of the outer cavity, a liquid storage device is arranged in the outer cavity, a pump body assembly is arranged in the inner cavity, and a motor assembly is arranged in the upper cavity.

Further, the liquid reservoir comprises a filter element, the filter element divides the outer cavity into a gas-liquid mixing cavity and a gas supplementing cavity, and the gas supplementing cavity is positioned on the upper side of the gas-liquid mixing cavity.

Further, the shell component is provided with an air suction pipe which is communicated with the air-liquid mixing cavity.

Further, the pump body assembly comprises a cylinder, one end of the cylinder is provided with a pump suction pipe, and the pump suction pipe is communicated with the air supplementing cavity.

Further, the cylinder is arranged in the center of the gas-liquid mixing cavity.

Further, the lower end of the pump suction pipe is communicated with the cylinder, and the upper end of the pump suction pipe penetrates through the filter element and is communicated with the air supplementing cavity.

Further, the lower end of the pump suction pipe penetrates through the shell assembly and is communicated with the air cylinder, and the upper end of the pump suction pipe penetrates through the shell assembly and is communicated with the air supplementing cavity.

Further, the pump body assembly comprises an upper flange and a lower flange, and the upper flange and the lower flange are fixedly connected to the upper end and the lower end of the air cylinder respectively.

Further, the lower flange is sleeved on the inner wall of the shell assembly, so that the middle cavity and the lower cavity are separated.

Furthermore, a baffle plate is formed in the shell body and separates the upper cavity from the lower cavity, an avoidance hole for the rotating shaft to penetrate is formed in the center of the baffle plate, the baffle plate extends downwards along the edge of the avoidance hole to form a sleeve, and the upper flange is sleeved in the sleeve.

Further, the partition plate and the sleeve comprise an inner layer and an outer layer which are arranged at intervals, and a silencing and heat-insulating cavity is formed between the inner layer and the outer layer.

Further, a sealing plate extending to the inner wall of the shell assembly or the lower flange is formed at the lower end of the sleeve, and the sealing plate separates the pump body assembly from the liquid reservoir.

Further, an oil return channel is arranged on the pump body assembly and penetrates through the upper flange, the air cylinder and the lower flange, so that the refrigerating oil in the cavity of the motor assembly flows back to the oil tank.

Further, an oil return groove is formed in the pump body assembly and is arranged between the lower flange and the cylinder to be communicated with the liquid reservoir and the cylinder inner cavity.

A refrigeration device comprises the compressor.

The compressor and the refrigeration equipment have the following advantages:

1. the liquid storage device is arranged in the shell, and the pump body component is positioned at the middle and lower parts of the shell, so that the vibration of the air suction end can be reduced due to the fact that the compressor body is heavy.

2. The upper end of the liquid storage device is provided with the heat insulation plate and the sleeve which are arranged in double layers, so that high-temperature gas can be isolated, the temperatures of the pump body and the oil pool are reduced, and the gas in the liquid storage device is prevented from being heated.

3. The heat insulating plate and the sleeve can simultaneously play the role of a silencer, and the noise value of the exhaust port of the compressor is reduced.

4. Through the filter screen as the filter element, can filter impurity, play oil-gas separation's effect simultaneously, prevent to produce the liquid and hit.

5. Because the pressure of the air suction part of the air cylinder is lower than the pressure of the lower end of the liquid storage device, the oil at the lower end of the liquid storage device can flow back into the pump body from the oil return groove under the action of pressure difference.

Drawings

FIG. 1 is a cross-sectional view of a compressor of the present invention;

FIG. 2 is an enlarged view of part A of FIG. 1;

FIG. 3 is a top view of the cylinder of the present invention;

FIG. 4 is an external schematic view of a pumping cylinder of the present invention;

fig. 5 is a schematic structural view of a sealing plate according to the present invention.

The figure indicates:

1. The device comprises a shell component, 11, an air suction pipe, 12, a partition plate, 13, a sleeve, 14, a sealing plate, 2, an oil tank, 3, a liquid reservoir, 31, a filter screen, 4, a pump body component, 41, an air cylinder, 42, a pump air suction pipe, 43, an upper flange, 44, a lower flange, 5, a motor component, 6, an oil return channel, 7 and an oil return groove.

Detailed Description

For a better understanding of the objects, structures and functions of the present invention, a compressor and a refrigeration apparatus according to the present invention will be described in further detail with reference to the accompanying drawings.

The refrigeration equipment comprises a compressor, and refrigeration is realized by using the compressor to perform work.

As shown in fig. 1, the compressor includes a housing assembly 1, and an upper chamber, a middle chamber and a lower chamber are sequentially formed in the housing assembly 1 from top to bottom. An oil pool 2 is arranged in the lower cavity for supplying oil to the compressor. The middle cavity comprises an inner cavity and an outer cavity, the inner cavity is located in the center of the outer cavity, a liquid reservoir 3 is arranged in the outer cavity, a pump body component 4 is arranged in the inner cavity, a motor component 5 is arranged in the upper cavity, the pump body component 4 is driven to move through a motor, and the pump body component 4 sucks air from the liquid reservoir 3 and compresses the air into the motor component 5 to complete compression movement.

The liquid reservoir 3 comprises a filter screen 31 as a filter member which divides the outer cavity into a gas-liquid mixing cavity and a gas supplementing cavity, the gas supplementing cavity is positioned on the upper side of the gas-liquid mixing cavity, and only gas enters the gas supplementing cavity from the gas-liquid mixing cavity after being filtered by the filter member. The housing assembly 1 is provided with an air suction pipe 11, and the air suction pipe 11 is communicated with the gas-liquid mixing cavity so as to supplement air from the outside. The pump body assembly 4 comprises a cylinder 41, one end of the cylinder 41 is provided with a pumping air pipe 42, and the pumping air pipe 42 is communicated with the air supplementing cavity, so that refrigerant gas is sucked into the cylinder 41 for compression.

As shown in connection with fig. 1 and 4, the pump suction tube 42 may be disposed entirely within the central cavity or may extend outside the housing assembly 1. And the cylinder 41 is provided in the center of the gas-liquid mixing chamber in order to save space in the housing. If the pump suction pipe 42 is completely arranged in the middle cavity, the lower end of the pump suction pipe 42 is communicated with the air cylinder 41, and the upper end of the pump suction pipe passes through the filter and is communicated with the air supplementing cavity, so that the space is saved. If the pump suction pipe 42 extends out of the housing assembly 1, the lower end of the pump suction pipe 42 penetrates the housing assembly 1 and communicates with the cylinder 41, and the upper end of the pump suction pipe 42 penetrates the housing assembly 1 and communicates with the air supplementing chamber. In this way, the suction resistance of the compressor is reduced, the pump suction pipe 42 is assembled more simply, and the filter screen 31 does not need to be perforated.

In order to fix the cylinder 41, the pump body assembly 4 includes an upper flange 43 and a lower flange 44, and the upper flange 43 and the lower flange 44 are fixedly connected to the upper and lower ends of the cylinder 41, respectively. The lower flange 44 is fitted over the inner wall of the housing assembly 1 to separate the middle and lower chambers. A baffle plate 12 is formed in the shell, the baffle plate 12 separates an upper cavity from a lower cavity, an avoidance hole for a rotating shaft to penetrate is formed in the center of the baffle plate 12, the baffle plate 12 extends downwards along the edge of the avoidance hole to form a sleeve 13, and an upper flange 43 is sleeved in the sleeve 13. In order to ensure the space of the reservoir 3, the lower end of the sleeve 13 is horn-shaped. In order to reduce the noise of the pump body assembly 4 and insulate heat, the partition plate 12 and the sleeve 13 each comprise an inner layer and an outer layer which are arranged at intervals, and a silencing heat insulation cavity is formed between the inner layer and the outer layer. As shown in connection with fig. 5, the lower end of the sleeve 13 is formed with a sealing plate 14 extending to an inner wall of the housing assembly 1 or a lower flange 44, the sealing plate 14 separating the pump body assembly 4 from the reservoir 3.

As shown in fig. 1 to 3, in order to ensure the normal circulation of the oil, the pump body assembly 4 is provided with an oil return passage 6 and an oil return groove 7. The oil return passage 6 penetrates the upper flange 43, the cylinder 41 and the lower flange 44, and returns the frozen oil in the cavity of the motor assembly 5 to the oil sump 2. The oil return groove 7 is arranged between the lower flange 44 and the cylinder 41 and is communicated with the inner cavity of the reservoir 3 and the cylinder 41. Thus, the refrigerating oil after oil-gas separation of the liquid reservoir 3 can flow back into the cylinder 41 through the backflow groove, and the oil shortage of the compressor caused by the oil accumulation of the liquid reservoir 3 is prevented.

Refrigerant on the refrigeration equipment enters the liquid reservoir 3 through the air suction pipe 11 and is filtered by the filtering piece to separate oil from gas. After the refrigerant gas is separated from oil, the refrigerant gas enters the cylinder 41 through the upper end of the pump suction pipe 42. Through the rotation of the pipe in the cylinder 41, the compressed high-pressure gas is discharged from the exhaust port at the upper end of the flange and enters the working cavity of the upper motor to cool the motor winding.

It will be understood that the application has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the application. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the application without departing from the essential scope thereof. Therefore, it is intended that the application not be limited to the particular embodiment disclosed, but that the application will include all embodiments falling within the scope of the appended claims.

Claims

1. The compressor comprises a shell assembly (1) and is characterized in that an upper cavity, a middle cavity and a lower cavity are sequentially formed in the shell assembly (1) from top to bottom, an oil pool (2) is arranged in the lower cavity and used for supplying oil to the compressor, the middle cavity comprises an inner cavity and an outer cavity, the inner cavity is positioned in the center of the outer cavity, a liquid storage device (3) is arranged in the outer cavity, a pump body assembly (4) is arranged in the inner cavity, and a motor assembly (5) is arranged in the upper cavity;

the liquid reservoir (3) comprises a filter element, the filter element divides the outer cavity into a gas-liquid mixing cavity and a gas supplementing cavity, and the gas supplementing cavity is positioned at the upper side of the gas-liquid mixing cavity;

The pump body assembly (4) comprises an air cylinder (41), one end of the air cylinder (41) is provided with a pump suction pipe (42), and the pump suction pipe (42) is communicated with the air supplementing cavity;

the lower end of the pump suction pipe (42) is communicated with the air cylinder (41), and the upper end of the pump suction pipe (42) penetrates through the filter element and is communicated with the air supplementing cavity.

2. Compressor according to claim 1, characterized in that the housing assembly (1) is provided with a suction pipe (11), the suction pipe (11) being in communication with the gas-liquid mixing chamber.

3. Compressor according to claim 1, characterized in that the cylinder (41) is arranged centrally in the gas-liquid mixing chamber.

4. A compressor according to claim 3, wherein the lower end of the suction pipe (42) extends through the housing assembly (1) and communicates with the cylinder (41), and the upper end of the suction pipe (42) extends through the housing assembly (1) and communicates with the gas-filling chamber.

5. Compressor according to claim 1, characterized in that the pump body assembly (4) comprises an upper flange (43) and a lower flange (44), the upper flange (43) and the lower flange (44) being fixedly connected to the upper and lower ends of the cylinder (41) respectively.

6. Compressor according to claim 5, characterized in that the lower flange (44) is fitted over the inner wall of the housing assembly (1) so as to separate the intermediate and lower chambers.

7. The compressor of claim 5, wherein a baffle plate (12) is formed in the shell, the baffle plate (12) separates the upper cavity from the lower cavity, a avoidance hole for a rotating shaft to penetrate is formed in the center of the baffle plate (12), the baffle plate (12) extends downwards along the edge of the avoidance hole to form a sleeve (13), and the upper flange (43) is sleeved in the sleeve (13).

8. Compressor according to claim 7, characterized in that the partition (12) and the sleeve (13) each comprise an inner layer and an outer layer arranged at intervals, between which a sound-damping and heat-insulating chamber is formed.

9. Compressor according to claim 7, characterized in that the lower end of the sleeve (13) is formed with a sealing plate (14) extending to the inner wall of the housing assembly (1) or to the lower flange (44), the sealing plate (14) separating the pump body assembly (4) from the reservoir (3).

10. Compressor according to claim 5, characterized in that the pump body assembly (4) is provided with an oil return channel (6), the oil return channel (6) penetrating through the upper flange (43), the cylinder (41) and the lower flange (44) to enable the refrigerating oil in the cavity of the motor assembly (5) to flow back into the oil sump (2).

11. Compressor according to claim 5, characterized in that the pump body assembly (4) is provided with an oil return groove (7), the oil return groove (7) being arranged between the lower flange (44) and the cylinder (41) for communicating the reservoir (3) with the inner chamber of the cylinder (41).

12. A refrigeration device comprising a compressor as claimed in any one of claims 1 to 11.