CN216044433U

CN216044433U - Pump body subassembly, compressor and air conditioner

Info

Publication number: CN216044433U
Application number: CN202122310560.5U
Authority: CN
Inventors: 魏会军; 吴健; 巩庆霞; 罗惠芳; 巫昌海
Original assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Current assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-03-15
Anticipated expiration: 2031-09-23

Abstract

The application provides a pump body subassembly, compressor and air conditioner. The pump body assembly comprises an upper flange, a cylinder and a lower flange, wherein a lower exhaust circulation passage which penetrates through the upper flange, the cylinder and the lower flange along the axial direction is arranged on the upper flange, a lower exhaust port is arranged on the lower flange and is communicated with the lower exhaust circulation passage, a roller is arranged in the cylinder, in a cross section which is perpendicular to the central axis of the cylinder, a connecting line between the center of the lower exhaust circulation passage and the central axis of the cylinder is a first connecting line, a connecting line between the center of the lower exhaust port and the central axis of the cylinder is a second connecting line, an included angle of the first connecting line relative to the second connecting line is a along the rotation direction of the roller, and a is more than or equal to 60 degrees and less than or equal to 180 degrees. According to the pump body subassembly of this application, can carry out optimal design to the position of lower exhaust circulation passageway, reduce the lower exhaust of high temperature and inhale the low temperature and compress the influence of low temperature gas heating in earlier stage, effectively improve compressor performance.

Description

Pump body subassembly, compressor and air conditioner

Technical Field

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

Background

In recent years, the high efficiency of the rotary compressor becomes a research focus, the optimization design of the exhaust system is one of the key points for improving the efficiency, the exhaust mainly comprises a single exhaust structure and a double exhaust structure from the realization form of a technical route, and the design of the lower exhaust circulation passage of the rotary compressor with the double exhaust structure is important for the high efficiency of the compressor.

Taking a single-cylinder compressor as an example, the realization form of the double exhaust technical route is as follows: the roller and the sliding sheet divide the working cavity of the cylinder into an air suction cavity and a compression cavity, the air suction cavity is communicated with the air suction port of the cylinder, and the compression cavity is communicated with the air exhaust port of the cylinder. The low-temperature low-pressure gas is sucked into a suction cavity of the cylinder through a cylinder suction port, then the low-temperature low-pressure gas is gradually compressed into high-temperature high-pressure gas, the high-pressure high-temperature gas is divided into two parts to be discharged out of the cylinder compression cavity, one part of the high-pressure high-temperature gas is discharged into a cavity of the upper silencer through a gas outlet on the upper flange, the other part of the high-pressure high-temperature gas is discharged into a cavity of the lower silencer through a diagonal cut of the cylinder from a gas outlet on the lower flange, and the high-temperature high-pressure gas is discharged into the cavity of the upper silencer through a lower exhaust circulation channel (the lower exhaust circulation channel is composed of the lower flange, the cylinder and an exhaust flow through hole on the upper flange), and then is mixed with the other part of exhaust gas and discharged into a cavity of the shell through a gas outlet on the upper silencer.

Because the suction cavity is filled with low-temperature low-pressure gas, the lower exhaust circulation channel is filled with high-temperature high-pressure gas, the high-temperature gas in the exhaust channel can be used for sucking and heating at low temperature, a low-temperature refrigerant is heated and expanded, the gas transmission amount is reduced, and the volumetric efficiency is reduced. When the exhaust passage position is closer to the exhaust port side of the cylinder, the heating time of low-temperature gas in the air suction cavity is short, but the heating time of refrigerant in the early stage of compression is long, the exhaust circulation path is longer, and the loss is larger.

SUMMERY OF THE UTILITY MODEL

Therefore, the technical problem that this application will be solved lies in providing a pump body subassembly, compressor and air conditioner, can carry out optimal design to the position of lower exhaust circulation passageway, reduces the lower exhaust of high temperature and breathes in and compress the influence of low temperature gas heating in earlier stage to the low temperature, effectively improves compressor performance.

In order to solve the problems, the application provides a pump body assembly, which comprises an upper flange, a cylinder and a lower flange, wherein a lower exhaust circulation passage which penetrates through the cylinder along the axial direction is arranged on the upper flange, a lower exhaust port which is communicated with a compression cavity of the cylinder is arranged on the lower flange, the lower exhaust port is communicated with the lower exhaust circulation passage, a roller is arranged in the cylinder, in a cross section which is perpendicular to the central axis of the cylinder, a connecting line between the center of the lower exhaust circulation passage and the central axis of the cylinder is a first connecting line, a connecting line between the center of the lower exhaust port and the central axis of the cylinder is a second connecting line, and an included angle of the first connecting line relative to the second connecting line is a along the rotation direction of the roller, wherein a is more than or equal to 60 degrees and less than or equal to 180 degrees.

Preferably, 65 DEG-a 95 deg.

Preferably, the lower flange outer cover is provided with a lower silencer, the lower exhaust port and the lower exhaust circulation passage are both communicated with an inner cavity of the lower silencer, and the refrigerant of the lower exhaust port enters the lower exhaust circulation passage through the lower silencer.

Preferably, the upper flange is provided with an upper silencer, and the lower exhaust port is communicated with the inner cavity of the upper silencer through a lower exhaust circulation passage.

Preferably, the upper flange is provided with an upper vent which is communicated with the inner cavity of the upper silencer.

Preferably, the upper and lower exhaust ports overlap in projection along the central axis of the cylinder.

According to another aspect of the present application, there is provided a compressor, comprising the pump body assembly as described above.

Preferably, the displacement of the compressor is V, the flow area of the lower exhaust gas flow passage is S, V/S is b, b is a dimensionless number, and b is more than or equal to 0.145 and less than or equal to 0.21.

Preferably, 0.159. ltoreq. b. ltoreq.0.171.

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

The utility model provides a pump body subassembly, including the upper flange, cylinder and lower flange, the upper flange is provided with the muffler, the upper flange, be provided with on cylinder and the lower flange along the lower air current passageway of discharging that the axial runs through, be provided with the lower gas vent that communicates with the compression chamber of cylinder on the lower flange, lower gas vent is through the inner chamber intercommunication of lower air current passageway and upper muffler, be provided with the roller in the cylinder, in the cross-section of the central axis of perpendicular to cylinder, the line between the central axis of the lower air current passageway looks center of discharging and cylinder is first line, the line between the central axis of the center of discharging port and cylinder is the second line down, direction of rotation along the roller, the contained angle of first line for the second line is a, 60 a is less than or equal to 180. Through setting for the contained angle scope between the lower vent on the lower flange of lower exhaust circulation passageway, can make the high temperature high-pressure gas that discharges through the lower vent on the lower flange arrange to lower exhaust circulation passageway department along carminative direction, and exhaust circulation route is shorter, effectively reduce circulation loss, the lower exhaust circulation passageway in this scope is more reasonable with the distance between induction port and the lower vent, can make lower exhaust circulation passageway less to compressor efficiency influence, reduce the influence that high temperature was arranged down to the low temperature and is breathed in and compress earlier stage low temperature gas heating, effectively improve compressor performance.

Drawings

FIG. 1 is a schematic structural view of a pump block assembly according to an embodiment of the present application;

FIG. 2 is a schematic view of the lower exhaust flow passage of the pump block assembly according to one embodiment of the present application;

FIG. 3 is a graph of displacement/lower discharge flow path area versus compressor coefficient of performance for a pump block assembly according to an embodiment of the present application;

FIG. 4 is a graph of angle a of the lower discharge flow passage of the pump block assembly in relation to the compressor coefficient of performance according to one embodiment of the present application.

The reference numerals are represented as:

1. an upper flange; 2. a cylinder; 3. a lower flange; 4. an upper muffler; 5. a lower exhaust gas flow passage; 6. a lower exhaust port; 7. a roller; 8. a lower silencer; 9. an upper vent; 10. an air suction port; 11. a crankshaft.

Detailed Description

Referring to fig. 1 to 4 in combination, according to an embodiment of the present application, the pump body assembly includes an upper flange 1, a cylinder 2, and a lower flange 3, the upper flange 1 is provided with an upper silencer 4, the upper flange 1, the cylinder 2, and the lower flange 3 are provided with a lower exhaust gas circulation passage 5 penetrating along an axial direction, the lower flange 3 is provided with a lower exhaust port 6 communicating with a compression chamber of the cylinder 2, the lower exhaust port 6 communicates with an inner cavity of the upper silencer 4 through the lower exhaust gas circulation passage 5, the cylinder 2 is provided with a roller 7 therein, in a section perpendicular to the central axis of the cylinder 2, a connecting line between the center of the lower exhaust gas through passage 5 and the central axis of the cylinder 2 is a first connecting line, a connecting line between the center of the lower exhaust port 6 and the central axis of the cylinder 2 is a second connecting line, and an included angle between the first connecting line and the second connecting line is a in the rotating direction of the roller 7, wherein a is more than or equal to 60 degrees and less than or equal to 180 degrees.

Through setting the included angle scope between the lower exhaust passage 5 for the lower exhaust port 6 on the lower flange 3, can make the high temperature high pressure gas that discharges through the lower exhaust port 6 on the lower flange 3 arrange to the circulation passage 5 department of lower exhaust along carminative direction, and the exhaust circulation route is shorter, effectively reduce circulation loss, the distance between lower exhaust passage 5 and induction port 10 and the lower exhaust port 6 in this scope is more reasonable, can make lower exhaust passage 5 less to the compressor efficiency influence, reduce the influence of lower exhaust of high temperature to low temperature inspiration and the low temperature gas heating in compression earlier stage, effectively improve compressor performance.

In one embodiment, 65 ≦ a ≦ 95, the performance of the compressor can be further optimized.

Referring to fig. 4 in combination, it can be seen that the coefficient of performance of the compressor is sharply decreased when a is out of the range of 60 ° to 180 °, and is optimized when a is in the range of 65 ° to 95 °, so that the coefficient of performance of the compressor can be greatly improved.

In one embodiment, the lower flange 3 is covered with a lower muffler 8, the lower exhaust port 6 and the lower exhaust flow passage 5 are both communicated with the inner cavity of the lower muffler 8, and the refrigerant of the lower exhaust port 6 enters the lower exhaust flow passage 5 through the lower muffler 8.

In one embodiment, the upper flange 1 is provided with an upper vent 9, and the upper vent 9 is communicated with the inner cavity of the upper silencer 4.

In one embodiment, the upper and lower exhaust ports 9, 6 overlap in projection along the central axis of the cylinder 2.

The number of the cylinders is at least one, and may be two or more.

The pump body assembly further comprises a crankshaft 11, and the upper flange 1, the cylinder 2 and the lower flange 3 are all mounted on the crankshaft 11.

In the embodiment, at least one cylinder 2 of the compressor adopts an upper and lower double exhaust structure, specifically, the cylinder 2 sucks low-temperature and low-pressure steam from an evaporator, compresses the steam into high-pressure and high-temperature gas, and then discharges the gas in two paths, wherein one path of the gas is discharged into the cavity of an upper silencer 4 through an upper exhaust port 9 on an upper flange 1 and then is discharged from an exhaust port on the upper silencer 4; the other part is discharged into the cavity of a lower silencer 8 from a lower exhaust port 6 of a lower flange 3, and is discharged into the cavity of an upper silencer 4 through a lower exhaust circulation passage 5, as shown in fig. 2, an included angle between the lower exhaust circulation passage 5 and the lower exhaust port 6 relative to the central axis of the cylinder 2 is more than or equal to 60 degrees and less than or equal to 180 degrees, at this time, high-temperature and high-pressure gas discharged through the lower exhaust port 6 of the lower flange 3 is discharged to the lower exhaust circulation passage 5 along the exhaust direction, and the exhaust circulation path is short, so that the circulation loss is effectively reduced, if a is more than 180 degrees, the transverse flow is increased, the exhaust circulation path is lengthened, namely, the circulation loss is increased, the work consumption is increased, the performance of the compressor is unfavorable, and if a is less than 60 degrees, the lower exhaust circulation passage 5 is close to an air suction port 10, so that the volume efficiency of the compressor is greatly influenced.

According to the embodiment of the application, the compressor comprises the pump body assembly, and the pump body assembly is the pump body assembly.

In one embodiment, the displacement of the compressor is V, the flow area of the lower exhaust gas flow passage 5 is S, V/S is b, b is a dimensionless number, and b is 0.145 or more and 0.21 or less.

When the flow area of the lower exhaust circulation passage 5 is smaller, the lower exhaust generates throttling loss to influence the performance of the compressor, through single experiment verification, and with reference to fig. 3, when the ratio b of the discharge volume V/the lower exhaust circulation passage area S satisfies that b is not less than 0.145 and not more than 0.21, the performance coefficient of the compressor reaches the highest, and the variation amplitude is smaller, the disadvantages caused by exhaust resistance can be effectively reduced, and the wall surface heating loss can be ensured to be smaller, so that the compressor is ensured to have better performance coefficient. When outside this range, a significant reduction in the coefficient of performance of the compressor occurs.

As a preferred embodiment, 0.159. ltoreq. b.ltoreq.0.171, the compressor coefficient of performance is at a more excellent level.

According to an embodiment of the application, the air conditioner comprises a compressor, and the compressor is 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. A pump body assembly is characterized by comprising an upper flange (1), a cylinder (2) and a lower flange (3), wherein a lower exhaust gas circulation passage (5) which penetrates through the upper flange (1), the cylinder (2) and the lower flange (3) along the axial direction is arranged on the upper flange (1), the cylinder (2) and the lower flange (3), a lower exhaust port (6) which is communicated with a compression cavity of the cylinder (2) is arranged on the lower flange (3), the lower exhaust port (6) is communicated with the lower exhaust gas circulation passage (5), a roller (7) is arranged in the cylinder (2), in a cross section which is perpendicular to the central axis of the cylinder (2), a connecting line between the center of the lower exhaust gas circulation passage (5) and the central axis of the cylinder (2) is a first connecting line, a connecting line between the center of the lower exhaust port (6) and the central axis of the cylinder (2) is a second connecting line, and the connecting line is along the rotation direction of the roller (7), the included angle of the first connecting line relative to the second connecting line is a, and a is more than or equal to 60 degrees and less than or equal to 180 degrees.

2. The pump body assembly of claim 1, wherein a is 65 ° or more and 95 ° or less.

3. The pump body assembly according to claim 1, wherein the lower flange (3) is covered with a lower muffler (8), the lower exhaust port (6) and the lower exhaust circulation passage (5) are both communicated with an inner cavity of the lower muffler (8), and the refrigerant of the lower exhaust port (6) enters the lower exhaust circulation passage (5) through the lower muffler (8).

4. Pump body assembly according to claim 1, characterized in that the upper flange (1) is provided with an upper silencer (4), the lower exhaust ports (6) communicating with the inner cavity of the upper silencer (4) through the lower exhaust gas flow channel (5).

5. Pump body assembly according to claim 4, characterized in that an upper vent (9) is provided on the upper flange (1), said upper vent (9) communicating with the inner cavity of the upper acoustic damper (4).

6. Pump body assembly according to claim 5, characterized in that the upper exhaust port (9) and the lower exhaust port (6) overlap in a projection along the central axis of the cylinder (2).

7. A compressor comprising a pump body assembly, characterized in that it is a pump body assembly according to any one of claims 1 to 6.

8. The compressor as claimed in claim 7, wherein the compressor has a displacement of V, the lower discharge flow passage (5) has a flow area of S, V/S b, b is a dimensionless number, and 0.145 b 0.21.

9. The compressor of claim 8, wherein 0.159. ltoreq. b.ltoreq.0.171.

10. An air conditioner comprising a compressor, wherein the compressor is as claimed in any one of claims 7 to 9.