CN114033693A

CN114033693A - Pump body structure, compressor and air conditioner

Info

Publication number: CN114033693A
Application number: CN202111537884.0A
Authority: CN
Inventors: 魏会军; 吴健; 邓昊佳; 罗惠芳; 巩庆霞; 巫昌海
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2021-12-15
Filing date: 2021-12-15
Publication date: 2022-02-11

Abstract

The application provides a pump body structure, compressor and air conditioner. The pump body structure comprises a cylinder (1) and a flange, wherein the flange is provided with a suction hole (2) and a sealing cavity (3), the cylinder (1) is provided with a suction cavity and a compression cavity, one side of the flange, which is close to the cylinder (1), is provided with a partition wall, a preset interval is formed between the sealing cavity (3) and the cylinder (1) through the partition wall, the partition wall is provided with a communication hole (4), the sealing cavity (3) is communicated with the suction cavity through the communication hole (4), refrigerant can enter the sealing cavity (3) through the suction hole (2), and then enters the suction cavity through the sealing cavity (3) and the communication hole (4). According to the pump body structure of this application, can reduce the heat that produces among the exhaust process to the influence of breathing in, guarantee the volumetric efficiency of compression, promote the compressor efficiency.

Description

Pump body structure, compressor and air conditioner

Technical Field

The application relates to the technical field of compressors, in particular to a pump body structure, a compressor and an air conditioner.

Background

The rolling rotor type compressor has the characteristics of simple structure, low cost, high reliability and the like, and is more and more widely applied to the fields of air conditioners, heat pump water heaters, refrigeration equipment, vehicle-mounted air conditioners and the like.

The main function of the rolling rotor compressor in the field of air conditioners is to periodically compress refrigerant, so that low-temperature and low-pressure refrigerant is compressed into high-temperature and high-pressure refrigerant to cause the refrigerant to circulate in the air conditioner. In the periodic compression and exhaust process of the rolling rotor compressor, high-temperature and high-pressure gas in the pump body and heat generated in the compression and exhaust process have a heating effect on low-temperature and low-pressure gas in the air suction pipe, so that the temperature and pressure of the gas finally entering the air cylinder are higher than expected, the air inflow is reduced, the volumetric efficiency of the pump body is poor, and the energy efficiency of the compressor is reduced.

Disclosure of Invention

Therefore, the technical problem that this application will be solved lies in providing a pump body structure, compressor and air conditioner, can reduce the heat that produces among the exhaust process to the influence of breathing in, guarantee the volumetric efficiency of compression, promote the efficiency.

In order to solve the problem, the application provides a pump body structure, including cylinder and flange, the flange has suction hole and sealed chamber, the cylinder has suction chamber and compression chamber, the flange has the partition wall near cylinder one side, form through the partition wall between sealed chamber and the cylinder and predetermine the interval, be provided with the intercommunicating pore on the partition wall, sealed chamber passes through the intercommunicating pore and communicates with suction chamber, the refrigerant can get into sealed chamber through suction hole, then get into compression chamber through sealed chamber and intercommunicating pore.

Preferably, on a cross section perpendicular to the central axis of the flange, a connecting line between the center of the communication hole and the center of the flange is a first structural line, the central line of the suction hole is a second structural line, and an included angle between the first structural line and the second structural line is greater than 90 °.

Preferably, the angle between the first and second construction lines is between 160 ° and 170 °.

Preferably, a throttling structure is arranged in the sealing cavity, the throttling structure is positioned on a refrigerant flow path between the suction hole and the communication hole, and a throttling hole is arranged on the throttling structure.

Preferably, the throttling structure is a throttling baffle.

Preferably, the throttling structure is integrally formed with the flange, or the throttling structure is fixedly installed in the sealing cavity.

Preferably, one side of the flange, which is far away from the cylinder, is provided with a groove, one side of the flange, which is provided with the groove, is fixedly provided with a cover plate, and the cover plate is in sealing fit with the flange, so that the groove forms a sealing cavity.

Preferably, the flange includes upper flange and lower flange, and when sealed chamber set up on the lower flange, pump body structure was last exhaust, and when sealed chamber set up on the upper flange, pump body structure was last exhaust.

Preferably, the refrigerant entering the sealed chamber through the suction hole is a liquid refrigerant.

According to another aspect of the present application, there is provided a compressor, including a pump body structure, the pump body structure being the above pump body structure.

According to another aspect of the present application, there is provided an air conditioner including the pump body structure or the compressor described above.

The application provides a pump body structure, including cylinder and flange, the flange has suction hole and sealed chamber, and the cylinder has suction chamber and compression chamber, and the flange has the interval near cylinder one side, forms preset interval through the interval between sealed chamber and the cylinder, is provided with the intercommunicating pore on the interval, and sealed chamber passes through intercommunicating pore and suction chamber intercommunication, and the refrigerant can get into sealed chamber through the suction hole, then gets into the compression chamber through sealed chamber and intercommunicating pore. This pump body structure is adjusted the suction hole to the flange from the cylinder, and make and pass through spacing wall interval certain distance between sealed chamber on the flange and the cylinder, through the intercommunicating pore intercommunication between sealed chamber and the cylinder suction chamber, when guaranteeing the normal breathing in of cylinder, make the suction hole on the flange can deviate from the original suction hole on the cylinder, thereby increase the distance between the original suction hole on the flange and the cylinder, reduce the heating effect of the heat that produces in the compressor exhaust process to the low temperature low pressure refrigerant in the breathing pipe, make the refrigerant that enters into the flange through the breathing pipe can keep low temperature low pressure state, guarantee the volumetric efficiency of compression, promote the compressor efficiency.

Drawings

FIG. 1 is a schematic view of a compressor according to an embodiment of the present application;

FIG. 2 is a schematic view of a refrigerant flow configuration of a pump body configuration according to one embodiment of the present application;

FIG. 3 is a diagram of the refrigerant flow configuration within the lower flange of the pump body configuration according to one embodiment of the present application;

FIG. 4 is a schematic view of a lower flange of the pump body structure according to one embodiment of the present application;

fig. 5 is a perspective view of a lower flange of the pump body structure according to an embodiment of the present application.

The reference numerals are represented as:

1. a cylinder; 2. a suction hole; 3. sealing the cavity; 4. a communicating hole; 5. a throttle baffle; 6. an orifice; 7. a cover plate; 8. an upper flange; 9. and a lower flange.

Detailed Description

In the related art, a low-temperature and low-pressure refrigerant from a refrigeration system directly enters a suction low-pressure cavity through a suction hole in a cylinder, and since gas is directly sucked into the cylinder, the refrigerant is very easy to heat in the suction process, and the volume of the gas is increased after the gas is heated, the temperature, the pressure and the volume of the refrigerant are higher than expected when the gas is sucked into the suction cavity, so that the suction amount of a compressor is reduced in the operation process, the volumetric efficiency is reduced, and the energy efficiency of the compressor is indirectly reduced.

In order to solve the problem, referring to fig. 1 to 5 in combination, according to an embodiment of the present application, a pump body structure includes a cylinder 1 and a flange, the flange has a suction hole 2 and a seal chamber 3, the cylinder 1 has a suction chamber and a compression chamber, the flange has a partition wall on a side close to the cylinder 1, a preset interval is formed between the seal chamber 3 and the cylinder 1 through the partition wall, a communication hole 4 is provided on the partition wall, the seal chamber 3 is communicated with the suction chamber through the communication hole 4, and a refrigerant can enter the seal chamber 3 through the suction hole 2 and then enter the suction chamber through the seal chamber 3 and the communication hole 4.

This pump body structure adjusts suction port 2 from cylinder 1 to the flange, and make and pass through the wall interval certain distance between sealed chamber 3 on the flange and the cylinder 1, communicate through intercommunicating pore 4 between sealed chamber 3 and the cylinder 1 suction port, when guaranteeing the normal breathing in of cylinder 1, make suction port 2 on the flange can deviate from original suction port 2 on the cylinder 1, thereby increase the distance between suction port 2 on the flange and the original suction port 2 on the cylinder 1, make the refrigerant difficult by the heating at the in-process that enters into sealed chamber 3 through suction port 2, reduce the heating effect of the heat that produces to the low temperature low pressure refrigerant in the breathing pipe in the compressor exhaust process, make the refrigerant that enters into the flange through the breathing pipe can keep low temperature low pressure state, guarantee the volumetric efficiency of compression, promote the compressor efficiency.

In one embodiment, in a cross section perpendicular to the central axis of the flange, a line connecting the center of the communication hole 4 and the center of the flange is a first configuration line, the central line of the suction hole 2 is a second configuration line, and an angle between the first configuration line and the second configuration line is greater than 90 °.

As a preferred embodiment, the angle between the first and second construction lines is 160 ° to 170 °. The best effect is achieved when the included angle is 170 deg..

In one embodiment, the flanges comprise an upper flange 8 and a lower flange 9, and the pumping arrangement is an upper exhaust when the capsule 3 is disposed on the lower flange 9 and a lower exhaust when the capsule 3 is disposed on the upper flange 8. In the present embodiment, the seal chamber 3 is arranged on the lower flange 9, and the pump body structure is an upper exhaust.

As a preferred embodiment, the refrigerant entering the sealed chamber 3 through the suction hole 2 is a liquid refrigerant.

In this embodiment, the structure of the pump body is modified, the air suction hole in the air cylinder 1 is eliminated, the air suction hole 2 is opened to the lower flange 9, the communication holes 4 are arranged at the bottom of the air cylinder 1 and the large plane of the lower flange 9, the positions of the two are overlapped, the projection of the center line of the air suction hole of the original air cylinder coincides with the projection of the center line of the communication hole 4 in the lower flange 9, the included angle between the first structural line and the second structural line is 160-170 °, that is, the included angle between the center line of the air suction hole 2 in the lower flange 9 and the center line of the air suction hole in the original air cylinder is 160-170 °, and meanwhile, as a preferred embodiment, the seal cavity 3 is an annular cavity.

The included angle between the central line of the suction hole 2 on the lower flange 9 and the central line of the suction hole on the original cylinder is 160-170 degrees, so that the suction hole 2 and the communicating hole 4 can be staggered with the rivet abdicating hole, the structure conflict is avoided, meanwhile, the suction hole 2 on the lower flange 9 can be staggered with the suction position of the cylinder 1 as far as possible, and the refrigerant is ensured to have the largest heat exchange area in the flowing process.

In one embodiment, a groove is formed in one side of the flange away from the cylinder 1, a cover plate 7 is fixedly arranged on one side of the flange where the groove is formed, and the cover plate 7 is in sealing fit with the flange, so that the groove forms the sealing cavity 3. In this embodiment, offer the recess in the one side of keeping away from cylinder 1, can avoid the direct in-process that the refrigerant flows to take place the contact with cylinder 1 on the one hand, lead to the heat transfer problem, on the other hand, through the recess bottom thickness of control flange, can effectively keep apart the heat transfer between cylinder 1 and the flange, reduce the pump body heat to the influence of the temperature of breathing in. In addition, the recess is one side open-ended structure, utilizes apron 7 and flange fixed mounting to seal the recess, can conveniently carry out the processing of recess more, reduce the processing degree of difficulty.

In one embodiment, a throttling structure is arranged in the sealing cavity 3, the throttling structure is positioned on a refrigerant circulation path between the suction hole 2 and the communication hole 4, and a throttling hole 6 is arranged on the throttling structure. In this embodiment, through set up throttle structure in sealed chamber 3, can separate the space in sealed chamber 3 inside, divide into two halves sealed chamber 3, set up orifice 6 in the throttle structure simultaneously, can utilize orifice 6 to throttle the refrigerant that flows to intercommunicating pore 4 from suction port 2, the liquid refrigerant that gets into in sealed chamber 3 like this will be in sealed chamber 3 of flange, through the throttle become gaseous refrigerant after the rethread intercommunicating pore 4 gets into in cylinder 1, effectively avoid because of the unable control of the volume of liquid refrigerant gets into the cylinder and the liquid hammer phenomenon that leads to of refrigerant liquid-carrying in-process.

In one embodiment, the throttling structure is a throttling baffle 5. In this embodiment, all set up throttle baffle 5 in each passageway of seal chamber 3, guarantee that the refrigerant just can enter into cylinder 1 after throttle baffle 5's the throttle in, adopt throttle baffle 5 as the throttle structure, the structure is simpler, and processing is more convenient, and the processing cost is lower, easier realization.

In one embodiment, the throttling structure is integrally formed with the flange.

In one embodiment the throttling structure is fixedly mounted in the seal chamber 3.

The operation of the pump body structure will be described below by way of example with the sealing chamber 3 being provided on the lower flange 9.

In the process of sucking air through the air suction hole 2 on the lower flange 9, the working condition can be adjusted to enable the refrigerant to carry liquid, the refrigerant carrying liquid is sucked into the lower flange 9 through the air suction hole 2, and a sealing cavity 3 is formed due to the fact that the lower flange 9 and the cover plate 7 are sealed, so that the refrigerant carrying liquid can enter the cavity of the sealing cavity 3. Because the lower flange 9 is connected with the cylinder 1 through the communicating hole 4, when the refrigerant passes through the motion track shown in fig. 3, the refrigerant has a process of being heated by the pump body, in the process, the liquid refrigerant is vaporized into low-temperature and low-pressure gas, the required gas suction temperature and gas suction pressure are ensured, the gas suction quantity is increased, the useless work done by the cylinder 1 due to the overhigh gas volume in the operation process is effectively reduced, and the volumetric efficiency of the compressor is improved.

In addition, because the projection of the central line of the flange air suction position and the central line of the communicating hole 4 is 160-170 degrees, the heat exchange area is increased in the process that the refrigerant flows from the air suction pipe to the communicating hole 4, the gas entering the air suction side is low-temperature and low-pressure gas, the heat of the air cylinder 1 can be reduced in the process of heating the refrigerant, the problems of lubricating oil coking, overhigh temperature of a pump body and the like caused by high temperature are reduced, the purpose of increasing the air suction quantity is achieved, the volumetric efficiency of compression is ensured, and the working energy efficiency of the compressor is improved.

When the projection of the central line of the flange air suction position and the central line of the communication hole 4 is 160-170 degrees, the structural performance parameters of the compressor of the embodiment of the application and the compressor of the related art are compared as shown in the following table:

it can be known from the table that, after adopting the pump body structure of this application embodiment, the APF (Annual Performance Factor) comprehensive energy efficiency of compressor promotes the range and reaches 1.5%, and the energy efficiency obtains obviously promoting.

According to an embodiment of the present application, a compressor includes a pump body structure, which is the above-mentioned pump body structure.

In the compressor, the outer circle of a roller is tightly matched with the head of a sliding sheet, so that a cavity formed by the inner circle of a cylinder 1 and the outer circle of the roller is divided into two parts by the sliding sheet to form a suction cavity and a compression cavity, a low-temperature low-pressure refrigerant discharged from a refrigeration system passes through a lower flange 9 and then enters the suction low-pressure cavity through a communicating hole 4 of the lower flange 9 and the cylinder 1, a crankshaft synchronously rotates under the driving of a motor rotor, the roller on the eccentric part of the crankshaft also rotates along with the crankshaft, the low-temperature low-pressure refrigerant in the suction low-pressure cavity of the cylinder 1 is gradually compressed under the change of volume, then is compressed into a high-temperature high-pressure refrigerant, flows through a flange exhaust hole from a diagonal cut of the compression high-pressure cavity of the cylinder 1 and is discharged after a valve plate is opened, and finally returns to the refrigeration system to complete the refrigerant compression process of the whole refrigeration cycle.

According to an embodiment of the application, the air conditioner comprises the pump body structure or the compressor.

It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.

Claims

1. The utility model provides a pump body structure, its characterized in that, includes cylinder (1) and flange, the flange has suction hole (2) and sealed chamber (3), cylinder (1) has suction chamber and compression chamber, the flange is close to cylinder (1) one side has the partition wall, sealed chamber (3) with pass through between cylinder (1) the partition wall forms predetermined interval, be provided with intercommunicating pore (4) on the partition wall, sealed chamber (3) pass through intercommunicating pore (4) with suction chamber intercommunication, the refrigerant can pass through suction hole (2) get into sealed chamber (3), then the warp sealed chamber (3) with intercommunicating pore (4) get into suction chamber.

2. The pump body structure according to claim 1, characterized in that, in a cross section perpendicular to the central axis of the flange, the line connecting the center of the communication hole (4) and the center of the flange is a first line of construction, the center line of the suction hole (2) is a second line of construction, and the angle between the first line of construction and the second line of construction is greater than 90 °.

3. The pump body structure according to claim 2, wherein an angle between the first construction line and the second construction line is 160 ° to 170 °.

4. The pump body structure according to claim 1, wherein a throttle structure is provided in the seal chamber (3) in a refrigerant flow path between the suction hole (2) to the communication hole (4), and a throttle hole (6) is provided in the throttle structure.

5. The pump body structure according to claim 4, characterized in that the throttling structure is a throttling baffle (5).

6. Pump body structure according to claim 4, characterized in that the throttling structure is integrally formed with the flange or is fixedly mounted inside the sealing cavity (3).

7. The pump body structure according to claim 1, characterized in that a groove is formed in the flange at the side away from the cylinder (1), a cover plate (7) is fixedly arranged at the side of the flange where the groove is formed, and the cover plate (7) is in sealing fit with the flange, so that the groove forms the sealing cavity (3).

8. Pump body structure according to claim 1, characterized in that the flanges comprise an upper flange (8) and a lower flange (9), the pump body structure being an upper vent when the sealed chamber (3) is arranged on the lower flange (9), the pump body structure being a lower vent when the sealed chamber (3) is arranged on the upper flange (8).

9. The pump body structure according to claim 1, characterized in that the refrigerant entering the hermetic chamber (3) through the suction hole (2) is a liquid refrigerant.

10. A compressor comprising a pump body structure, characterized in that it is a pump body structure according to any one of claims 1 to 9.

11. An air conditioner characterized by comprising the pump body structure of any one of claims 1 to 9 or the compressor of claim 10.