CN110953157A

CN110953157A - Compressor and refrigeration plant

Info

Publication number: CN110953157A
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
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: 2020-04-03

Abstract

The invention discloses a compressor and refrigeration equipment, wherein the compressor comprises a shell assembly, and 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 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 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. According to the compressor, the liquid storage device is arranged in the compressor, the motor assembly is separated from the pump body assembly, and the compression efficiency is higher while the space is saved.

Description

Compressor and refrigeration plant

Technical Field

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

Background

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

1. the vibration and noise of the liquid storage device are large. In the prior art, because the air inlet of the compressor is positioned on the independently separated liquid storage device, the vibration is larger due to the smaller mass of the liquid storage device and the influence of suction pulsation.

2. The pump body motor and the oil pool are integrated. In the prior art, because the pump body motor oil pool is in the same cavity, the temperature of the frozen oil and the temperature of the pump body working cavity are easily increased by the temperature rise of the motor winding, the viscosity of the frozen oil is reduced and the leakage is increased due to overhigh oil temperature. The pump body temperature is too high, so that the volume efficiency is reduced, and parts are easy to wear and deform.

3. The liquid accumulator needs to occupy larger space of the refrigeration equipment system.

Disclosure of Invention

The invention aims to provide a compressor and refrigeration equipment, wherein the compressor and a liquid storage device are integrally arranged so as to solve the technical problem.

In order to achieve the purpose, the specific technical scheme of the compressor and the refrigeration equipment 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 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 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.

Furthermore, the reservoir comprises a filter element which divides the outer cavity into a gas-liquid mixing cavity and an air replenishing cavity, and the air replenishing cavity is positioned on the upper side of the gas-liquid mixing cavity.

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

Further, pump body subassembly includes the cylinder, and cylinder one end is provided with the pump and inhales the trachea, inhales trachea and tonifying qi chamber intercommunication.

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

Furthermore, the lower end of the air suction pipe of the pump is communicated with the air cylinder, and the upper end of the air suction pipe penetrates through the filter piece and is communicated with the air replenishing cavity.

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

Furthermore, 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 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 partition plate is formed in the shell and used for separating the upper cavity from the lower cavity; the center of the partition plate is provided with an avoiding hole for the rotating shaft to penetrate through, the partition plate extends downwards along the edge of the avoiding hole to form a sleeve, and the upper flange is sleeved in the sleeve.

Further, baffle and sleeve all include inlayer and the skin that the interval set up, are formed with the thermal-insulated chamber of amortization between inlayer and the skin.

Furthermore, 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 pump body assembly and the liquid reservoir are separated by the sealing plate.

Furthermore, 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 refrigeration oil in the cavity of the motor assembly flows back to the oil pool.

Furthermore, an oil return groove is formed in the pump body assembly and arranged between the lower flange and the air cylinder so as to communicate the liquid storage device with the inner cavity of the air cylinder.

A refrigeration plant comprises the compressor.

The compressor and the refrigeration equipment have the following advantages:

1. with built-in reservoir, pump body subassembly is located casing middle and lower part, because the compressor body is heavier, can reduce the vibration of end of breathing in.

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

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

4. Through the filter screen as filtering piece, 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 that of the lower end of the liquid accumulator, oil at the lower end of the liquid accumulator can flow back to the interior of the pump body from the oil return groove under the action of differential pressure.

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 a schematic external view of a pumping cylinder according to the present invention;

fig. 5 is a schematic view of the sealing plate structure of the present invention.

The notation in the figure is:

1. a housing assembly; 11. an air intake duct; 12. a partition plate; 13. a sleeve; 14. a sealing plate; 2. an oil sump; 3. a reservoir; 31. filtering with a screen; 4. a pump body assembly; 41. a cylinder; 42. a pump suction pipe; 43. an upper flange; 44. a lower flange; 5. a motor assembly; 6. an oil return passage; 7. an oil return groove.

Detailed Description

In order to better understand the purpose, structure and function of the present invention, a compressor and a refrigeration device of 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 working of the compressor.

As shown in fig. 1, the compressor includes a shell assembly 1, and an upper chamber, a middle chamber and a lower chamber are sequentially formed in the shell assembly 1 from top to bottom. An oil pool 2 is arranged in the lower cavity and supplies 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 3 is arranged in the outer cavity, a pump body assembly 4 is arranged in the inner cavity, a motor assembly 5 is arranged in the upper cavity, the pump body assembly 4 is driven by a motor to move, the pump body assembly 4 sucks air from the liquid storage device 3 and compresses the air into the motor assembly 5, and compression movement is completed.

The reservoir 3 includes a filter screen 31 as a filter member that separates the outer chamber into a gas-liquid mixing chamber and an air replenishing chamber, the air replenishing chamber being located above the gas-liquid mixing chamber, and only gas entering the air replenishing chamber from the gas-liquid mixing chamber by filtration of the filter member. The shell assembly 1 is provided with an air suction pipe 11, and the air suction pipe 11 is communicated with the air-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 the refrigerant gas is sucked into the cylinder 41 to be compressed.

As shown in fig. 1 and 4, the pumping air 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 pumping air pipe 42 is completely arranged in the middle cavity, the lower end of the pumping air pipe 42 is communicated with the air cylinder 41, and the upper end of the pumping air pipe penetrates through the filter piece and is communicated with the air replenishing cavity, so that the space is saved. If the pumping air tube 42 extends outside the housing assembly 1, the lower end of the pumping air tube 42 extends through the housing assembly 1 and communicates with the air cylinder 41, and the upper end of the pumping air tube 42 extends through the housing assembly 1 and communicates with the air supplement chamber. Thus, the suction resistance of the compressor is reduced, the suction pipe 42 is more easily assembled, and the filter net 31 does not need to be perforated.

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

As shown in fig. 1 to 3, in order to ensure the normal circulation of 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 through the upper flange 43, the cylinder 41 and the lower flange 44, so that the refrigeration oil in the cavity of the motor assembly 5 flows back to the oil pool 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 liquid storage device 3 and the cylinder 41. Like this, the refrigeration oil after the reservoir 3 oil-gas separation can be inside by the return tank backward flow entering cylinder 41, prevents that reservoir 3 long-pending oil from leading to the compressor lack of oil.

The refrigerant on the refrigeration equipment enters the liquid reservoir 3 through the air suction pipe 11, and is filtered by the filter element to be subjected to oil-gas separation. The refrigerant gas is separated into oil and liquid, and then enters the cylinder 41 through the upper end of the pumping air pipe 42. Through the rotation of the pipe in the cylinder 41, the high-pressure gas compressed by the cylinder 41 is discharged from the exhaust port at the upper end of the flange, enters the working cavity of the upper-end motor and cools the motor winding.

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

Claims

1. A 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 is used 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 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.

2. Compressor according to claim 1, characterized in that the reservoir (3) comprises a filter element which divides the outer chamber into a gas-liquid mixing chamber and a gas make-up chamber, the gas make-up chamber being located above the gas-liquid mixing chamber.

3. Compressor according to claim 2, characterized in that the shell assembly (1) is provided with a suction duct (11), the suction duct (11) communicating with the gas-liquid mixing chamber.

4. The compressor according to claim 2, wherein the pump body assembly (4) comprises a cylinder (41), a pumping air pipe (42) is arranged at one end of the cylinder (41), and the pumping air pipe (42) is communicated with the air replenishing cavity.

5. Compressor according to claim 4, characterized in that the cylinder (41) is arranged centrally in the gas-liquid mixing chamber.

6. A compressor according to claim 5, characterized in that the lower end of the suction pipe (42) communicates with the cylinder (41), and the upper end of the suction pipe (42) extends through the filter element and communicates with the compensation chamber.

7. Compressor, according to claim 5, characterized in that the lower end of the pumping air duct (42) extends through the shell assembly (1) and communicates with the cylinder (41), and the upper end of the pumping air duct (42) extends through the shell assembly (1) and communicates with the compensation chamber.

8. The compressor according to claim 4, wherein the pump body assembly (4) comprises an upper flange (43) and a lower flange (44), and the upper flange (43) and the lower flange (44) are respectively and fixedly connected to the upper end and the lower end of the cylinder (41).

9. Compressor according to claim 8, characterized in that the lower flange (44) is fitted over the inner wall of the shell assembly (1) so as to separate the middle and lower chambers.

10. The compressor of claim 8, wherein a partition (12) is formed in the housing, the partition (12) separating the upper and lower chambers; an avoiding hole for the rotating shaft to penetrate through is formed in the center of the partition plate (12), the partition plate (12) extends downwards along the edge of the avoiding hole to form a sleeve (13), and the upper flange (43) is sleeved in the sleeve (13).

11. Compressor according to claim 10, characterized in that the partition (12) and the sleeve (13) each comprise an inner layer and an outer layer arranged at a distance from each other, between which the sound-deadening and heat-insulating chamber is formed.

12. Compressor according to claim 10, 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) and the reservoir (3).

13. The compressor according to claim 8, characterized in that the pump body assembly (4) is provided with an oil return channel (6), and the oil return channel (6) penetrates through the upper flange (43), the cylinder (41) and the lower flange (44) so as to enable the refrigerant oil in the cavity of the motor assembly (5) to flow back to the oil pool (2).

14. Compressor according to claim 8, characterized in that the pump body assembly (4) is provided with an oil return groove (7), and the oil return groove (7) is arranged between the lower flange (44) and the cylinder (41) to communicate the reservoir (3) and the inner cavity of the cylinder (41).

15. A refrigeration device, characterized by comprising a compressor according to any one of claims 1-14.