A rotating cylinder rolling piston coupling compression structure, a compressor and an air conditioner

Abstract

The present invention provides a rotating cylinder rolling piston coupled compression structure, a compressor and an air conditioner. The rotating cylinder rolling piston coupled compression structure includes a first-stage compression assembly (100) and a second-stage compression assembly (200). The gas compressed by the first-stage compression assembly (100) enters the second-stage compression assembly (200) and is further compressed. The first-stage compression assembly (100) is a roller cylinder compression structure, and the second-stage compression assembly (200) is a rotating cylinder compression structure; or the first-stage compression assembly (100) is a rotating cylinder compression structure, and the second-stage compression assembly (200) is a roller cylinder compression structure. By means of the present invention, the problems of refrigerant leakage and large friction force can be solved simultaneously, thereby improving the reliability and energy efficiency value of the compressor, comprehensively enhancing the performance of the compressor, having a relatively small eccentric mass, and being easy to achieve high-speed operation.

Description

Technical Field

[0001] The present invention belongs to the technical field of compressors, and particularly relates to a rotating cylinder rolling piston coupled compression structure, a compressor, and an air conditioner. Background Art

[0002] Although conventional two-stage rotary compressors can distribute the compression ratio on the first-stage cylinder and the second-stage cylinder respectively, due to the presence of sliding vanes, refrigerant leakage and reliability decrease. At the same time, although conventional two-stage rotating cylinder rolling piston compressors do not have sliding vanes, since the entire cylinder rotates, the friction between the cylinder and the bearing is large, and it is not conducive to achieving high-speed operation.

[0003] Since the two-stage or multi-stage compressors in the prior art cannot simultaneously solve the problems of refrigerant leakage and reliability decrease caused by the presence of sliding vanes, and the problems of large friction between the rotating cylinder and the bearing, large eccentric mass, and difficulty in high-speed operation, resulting in reliability decrease, the present invention researches and designs a rotating cylinder rolling piston coupled compression structure, a compressor, and an air conditioner. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects that the two-stage or multi-stage compressors in the prior art cannot simultaneously solve refrigerant leakage and reliability decrease caused by large friction between the rotating cylinder and the bearing, so as to provide a rotating cylinder rolling piston coupled compression structure, a compressor, and an air conditioner.

[0005] The present invention provides a rotating cylinder rolling piston coupled compression structure, which includes:

[0006] A first-stage compression assembly and a second-stage compression assembly, the gas compressed by the first-stage compression assembly enters the second-stage compression assembly for further compression, and the first-stage compression assembly is a roller cylinder compression structure, and the second-stage compression assembly is a rotating cylinder compression structure; or the first-stage compression assembly is a rotating cylinder compression structure, and the second-stage compression assembly is a roller cylinder compression structure.

[0007] Preferably,

[0008] The first-stage compression assembly is a roller cylinder compression structure, including a roller, a first cylinder, and a sliding vane. The roller is arranged in the first cylinder and can rotate to compress the gas in the first cylinder, and the first cylinder is fixed.

[0009] Preferably,

[0010] The first cylinder includes a first accommodation cavity, the roller is arranged in the first accommodation cavity, and the cross-sectional shape of the first accommodation cavity is circular.

[0011] Preferably,

[0012] The second-stage compression assembly is a rotating cylinder compression structure, including a piston, a second cylinder, and a cylinder housing. The piston is disposed in the second cylinder, and the second cylinder is disposed in the cylinder housing. The piston can rotate to drive the second cylinder to rotate, and the piston compresses the gas in the second cylinder.

[0013] Preferably,

[0014] The second cylinder includes a second accommodation cavity. The piston is disposed in the second accommodation cavity, and the cross-sectional shape of the second accommodation cavity is non-circular.

[0015] Preferably,

[0016] The cross-sectional shape of the second accommodation cavity is elliptical.

[0017] Preferably,

[0018] The first-stage compression assembly and the second-stage compression assembly are arranged vertically, and the first-stage compression assembly is located below the second-stage compression assembly.

[0019] Preferably,

[0020] A partition assembly is further disposed between the first-stage compression assembly and the second-stage compression assembly, and an air supplement port is further disposed on the partition assembly.

[0021] The present invention further provides a compressor, which includes the rotating cylinder rolling piston coupling compression structure described in any one of the preceding items.

[0022] The present invention further provides an air conditioner, which includes the variable displacement compression structure described in any one of the preceding items or the compressor described above.

[0023] A rotating cylinder rolling piston coupling compression structure, a compressor, and an air conditioner provided by the present invention have the following beneficial effects:

[0024] By setting one of the first-stage compression assembly and the second compression assembly in a roller cylinder compression structure and the other in a rotating cylinder compression structure in a two-stage or multi-stage compressor, the present invention can effectively reduce the frictional force generated between the rotating cylinder and the bearing (or flange) by using the roller cylinder compression structure, and can effectively reduce the refrigerant leakage caused by the presence of the sliding vane in the roller cylinder by using the rotating cylinder compression structure. Therefore, by combining the roller cylinder compression structure and the rotating cylinder compression structure, the problems of refrigerant leakage and large frictional force can be solved simultaneously, thereby improving the reliability and energy efficiency value of the compressor, comprehensively enhancing the performance of the compressor, having a small eccentric mass, and being easy to achieve high-speed operation. Description of the Drawings

[0025] Figure 1 It is the front sectional view structure diagram of the rotating cylinder rolling piston coupling compression structure of the present invention;

[0026] Figure 2 It is the top sectional view of the rotating cylinder compression structure in the rotating cylinder rolling piston coupling compression structure of the present invention.

[0027] The reference signs in the figure are shown as:

[0028] 100, the first-stage compression assembly; 200, the second-stage compression assembly; 1, the crankshaft; 2, the upper flange; 3, the upper muffler; 4, the second cylinder (or the upper cylinder); 41, the second accommodation cavity; 42, the second suction port; 43, the second exhaust port; 5, the piston; 6, the cylinder shell; 7, the upper partition plate; 8, the lower partition plate; 9, the first cylinder (or the lower cylinder); 10, the roller; 11, the lower flange; 12, the air make-up port. Specific embodiments

[0029] As Figure 1-2 shown, the present invention provides a rotating cylinder rolling piston coupling compression structure, which includes:

[0030] The first-stage compression assembly 100 and the second-stage compression assembly 200, the gas compressed by the first-stage compression assembly 100 enters the second-stage compression assembly 200 and is further compressed, and the first-stage compression assembly 100 is a roller cylinder compression structure, and the second-stage compression assembly 200 is a rotating cylinder compression structure; or the first-stage compression assembly 100 is a rotating cylinder compression structure, and the second-stage compression assembly 200 is a roller cylinder compression structure.

[0031] By setting one of the first-stage compression assembly and the second compression assembly in a two-stage or multi-stage compressor as a roller cylinder compression structure and the other as a rotating cylinder compression structure, the present invention can effectively reduce the friction force generated between the rotating cylinder and the bearing (or flange) by using the roller cylinder compression structure, and can effectively reduce the refrigerant leakage caused by the existence of the sliding vane in the roller cylinder by using the rotating cylinder compression structure. Therefore, by combining the roller cylinder compression structure and the rotating cylinder compression structure, the problems of refrigerant leakage and large friction force can be solved simultaneously, thereby improving the reliability and energy efficiency value of the compressor, comprehensively enhancing the performance of the compressor, having a smaller eccentric mass, and being easy to achieve high-speed operation (with higher reliability than the conventional two-stage rotor compressor structure and the conventional two-stage rotating cylinder compression structure).

[0032] Since the second-stage cylinder adopts a rotating cylinder rolling piston compression structure, the compression ratio of the first-stage cylinder can be reduced by adjusting the enthalpy-increasing pressure, thereby improving the reliability of the sliding vane and further enhancing the reliability of the compressor. At the same time, since there is no sliding vane in the second stage, the refrigerant leakage is also relatively small, resulting in higher reliability and energy efficiency of the compression structure of the present invention compared to the conventional rotary two-stage compression structure. Since the first-stage cylinder adopts a rotary compression structure, the friction between the roller and the lower flange is relatively small, and the eccentric mass is also relatively small. Therefore, its reliability is higher than that of the conventional rotating cylinder rolling piston compressor structure and it is easy to achieve high-speed operation. In summary, the energy efficiency of the rotating cylinder rolling piston coupled two-stage compressor mechanism of the present invention is higher than that of the conventional two-stage rotary compression structure, and the reliability is higher than that of the conventional two-stage rotary compressor structure and the conventional two-stage rotating cylinder compression structure.

[0033] Preferably,

[0034] The first-stage compression assembly 100 is a roller cylinder compression structure, including a roller 10, a first cylinder 9, and a sliding vane. The roller 10 is disposed in the first cylinder 9 and can rotate to compress the gas in the first cylinder 9, and the first cylinder 9 is fixed. This is the preferred structural form of the first-stage compression assembly of the present invention, that is, the roller cylinder compression structure. Since the effective volume of the first-stage cylinder is relatively large, the first-stage cylinder adopting a rotary compression structure can avoid the large friction force caused by the large friction area compared to the rotating cylinder, improving the reliability; and the eccentric mass is also relatively small, so it is easy to achieve high-speed operation.

[0035] Preferably,

[0036] The first cylinder 9 includes a first accommodation cavity. The roller 10 is disposed in the first accommodation cavity, and the cross-sectional shape of the first accommodation cavity is circular. This is the preferred structural form of the first cylinder of the present invention. The circular cross-sectional shape of the first accommodation cavity can accommodate the roller to roll therein, thereby realizing the function of compressing the gas in the compression cavity.

[0037] Preferably,

[0038] The second-stage compression assembly 200 is a rotating cylinder compression structure, including a piston 5, a second cylinder 4, and a cylinder housing 6. The piston 5 is disposed in the second cylinder 4, the second cylinder 4 is disposed in the cylinder housing 6, the piston 5 can rotate to drive the second cylinder 4 to rotate, and the piston 5 compresses the gas in the second cylinder 4. This is the preferred structural form of the second-stage compression assembly of the present invention, that is, the roller cylinder compression structure. Since the effective volume of the second-stage cylinder is relatively small, the second-stage cylinder adopts a rotating cylinder rolling piston structure to reduce the size of the rolling cylinder, reduce the friction between the cylinder and the partition plate, and avoid the refrigerant leakage at the sliding vane caused by using a roller compressor, thereby improving the performance and reliability of the compressor.

[0039] Preferably,

[0040] The second cylinder 4 includes a second accommodation cavity 41. The piston 5 is disposed in the second accommodation cavity 41, and the cross-sectional shape of the second accommodation cavity 41 is non-circular. This is a preferred structural form of the second cylinder of the present invention. By setting the cross-sectional shape of the second accommodation cavity to be non-circular, such as Figure 2 , it can enable the piston to drive the second cylinder to rotate when rotating, while the piston translates in the second accommodation cavity to compress the gas in the crescent-shaped compression cavity.

[0041] Preferably,

[0042] The cross-sectional shape of the second accommodation cavity 41 is elliptical. This is the preferred cross-sectional shape of the second accommodation cavity. The ellipse can effectively ensure that the piston drives the second cylinder to rotate while still being able to perform translational motion in the second accommodation cavity, achieving effective compression, eliminating the sliding vane in the rotary compressor, and avoiding and reducing the refrigerant leakage situation.

[0043] Preferably,

[0044] The first-stage compression assembly 100 and the second-stage compression assembly 200 are arranged up and down, and the first-stage compression assembly 100 is located below the second-stage compression assembly 200. This is the preferred relative arrangement form between the first-stage and second-stage compression assemblies of the present invention. The lower first-stage compression assembly first sucks in gas for compression, and then enters the second-stage compression assembly to complete the second-stage compression.

[0045] Preferably,

[0046] A partition assembly (including a lower partition 8 and an upper partition 7) is further provided between the first-stage compression assembly 100 and the second-stage compression assembly 200, and an air supply port 12 is further provided on the partition assembly. This is a further preferred structural form of the present invention. By providing the partition assembly and an air supply port on the partition assembly, medium-pressure air supply can be performed on the gas after the first-stage compression through the air supply port, and then they enter the second-stage cylinder together to achieve the function of air supply and enthalpy increase. The compression process of the present invention is as follows: The refrigerant enters the interior of the lower cylinder (the first cylinder 9) through the suction port of the lower cylinder and is compressed, and is discharged through the exhaust port of the lower partition 8 and enters the cavity formed by the upper partition 7 and the lower partition 8. At the same time, the medium-pressure gaseous refrigerant from the outlet of the flash evaporator enters the cavity formed by the upper partition 7 and the lower partition 8 through the air supply port 12 of the upper partition 7, mixes with the refrigerant discharged from the first-stage cylinder, and then enters the cavity formed by the upper cylinder (the second cylinder 4) and the piston 5 through the ventilation hole of the upper partition 7, and is finally compressed by the upper cylinder and discharged from the upper flange 2.

[0047] The present invention also provides a compressor, which includes the rotating cylinder rolling piston coupling compression structure described in any one of the preceding items. Since the second-stage cylinder adopts the rotating cylinder rolling piston compression structure, the compression ratio of the first-stage cylinder can be reduced by adjusting the enthalpy-increasing pressure, thereby improving the reliability of the sliding vane and further improving the reliability of the compressor. At the same time, since there is no sliding vane in the second stage, the refrigerant leakage is also small, resulting in higher reliability and energy efficiency of the compression structure of the present invention than that of the conventional rotary two-stage compression structure.

[0048] The present invention also provides an air conditioner, which includes the variable displacement compression structure described in any one of the preceding items or the compressor described above. Since the first-stage cylinder adopts the rotary compression structure, the friction between the roller and the lower flange is small, and the eccentric mass is also small, so its reliability is higher than that of the conventional rotating cylinder rolling piston compressor structure and it is easy to achieve high-speed operation. In summary, the energy efficiency of the rotating cylinder rolling piston coupling two-stage compressor mechanism of the present invention is higher than that of the conventional two-stage rotary compression structure, and the reliability is higher than that of the conventional two-stage rotary compressor structure and the conventional two-stage rotating cylinder compression structure.

[0049] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The above is only the preferred implementation manner of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A rotating cylinder rolling piston coupling compression structure, characterized in that: Comprising: A first-stage compression component (100) and a second-stage compression component (200), the gas compressed by the first-stage compression component (100) enters the second-stage compression component (200) and is further compressed, and the first-stage compression component (100) is a roller cylinder compression structure, and the second-stage compression component (200) is a rotating cylinder compression structure; a compression structure combining a roller cylinder compression structure and a rotating cylinder compression structure is formed. The first-stage compression component (100) is a roller cylinder compression structure, including a roller (10), a first cylinder (9) and a sliding vane. The roller (10) is arranged in the first cylinder (9) and can rotate to compress the gas in the first cylinder (9), and the first cylinder (9) is fixed. The second-stage compression component (200) is a rotating cylinder compression structure, including a piston (5), a second cylinder (4) and a cylinder housing (6). The piston (5) is arranged in the second cylinder (4), the second cylinder (4) is arranged in the cylinder housing (6), the piston (5) can rotate to drive the second cylinder (4) to rotate, and the piston (5) compresses the gas in the second cylinder (4).

2. The rotating cylinder rolling piston coupled compression structure according to claim 1, characterized in that: The first cylinder (9) includes a first accommodation cavity, the roller (10) is arranged in the first accommodation cavity, and the cross-sectional shape of the first accommodation cavity is circular.

3. The rotating cylinder rolling piston coupled compression structure according to claim 1, characterized in that: The second cylinder (4) includes a second accommodation cavity (41), the piston (5) is arranged in the second accommodation cavity (41), and the cross-sectional shape of the second accommodation cavity (41) is non-circular.

4. The rotating cylinder rolling piston coupled compression structure according to claim 3, characterized in that: The cross-sectional shape of the second accommodation cavity (41) is elliptical.

5. The rotating cylinder rolling piston coupled compression structure according to any one of claims 1-4, characterized in that: The first-stage compression component (100) and the second-stage compression component (200) are arranged up and down, and the first-stage compression component (100) is located below the second-stage compression component (200).

6. The rotating cylinder rolling piston coupled compression structure according to claim 5, characterized in that: A partition component is further arranged between the first-stage compression component (100) and the second-stage compression component (200), and an air inlet (12) is further arranged on the partition component.

7. A compressor, characterized in that: Comprising the rotating cylinder rolling piston coupled compression structure according to any one of claims 1-6.

8. An air conditioner, characterized in that: Comprising the rotating cylinder rolling piston coupled compression structure according to any one of claims 1-6 or the compressor according to claim 7.

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