Rotating type compressor and refrigerating system with rotating type compressor

Abstract

The invention discloses a rotating type compressor and a refrigerating system with the rotating type compressor. The rotating type compressor comprises a shell body, a power device and a compressing mechanism, wherein the power device is arranged inside the shell body; and the compressing mechanism is arranged inside the shell body and driven by the power device and comprises an air cylinder component, an upper bearing and a lower bearing, the upper bearing and the lower bearing are arranged at the two ends of the air cylinder component correspondingly, and the air cylinder component comprisesone final-stage air cylinder and at least one preceding-stage air cylinder, each air cylinder of the final-stage air cylinder and the at least one preceding-stage air cylinder is internally providedwith a first-stage compressing cavity, at least one of the at least one preceding-stage air cylinder is provided with a side-direction air exhaust passage, one end of the side-direction air exhaust passage communicates with the compressing cavity corresponding to the at least one preceding-stage air cylinder, and the other end of the side-direction air exhaust passage communicates with the radialouter portion of the at least one preceding-stage air cylinder after running through the cylinder wall of the at least one preceding-stage air cylinder. According to the rotating type compressor, by means of the manner that the at least one preceding-stage air cylinder is provided with the side-direction air exhaust passage, the air exhaust area of the at least one preceding-stage air cylinder canbe increased to increase the air exhaust quantity of the at least one preceding-stage air cylinder.

Description

technical field [0001] The invention relates to the technical field of compressors, in particular to a rotary compressor and a refrigeration system with the same. Background technique [0002] Different from the single suction and single exhaust process of the single-stage compression compressor, the two-stage compression rotary compressor has two suction and two exhaust processes. In the conventional two-stage compression compressor, The lower cylinder is exhausted downwards, and then the gas compressed by the lower cylinder is drawn out at the auxiliary bearing (or other positions). The power loss caused by the exhaust is relatively large. Therefore, it is hoped to increase the exhaust passage area of ​​each stage of the cylinder. According to the conventional The idea is that the cylinders of each stage need to be set up in a double-row structure. Considering that the exhaust pressure of the upper cylinder and the lower cylinder is not equal, it is necessary to install th...

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Problems solved by technology

[0002] Different from the single suction and single exhaust process of the single-stage compression compressor, the two-stage compression rotary compressor has two suction and two exhaust processes. In the conventional two-stage compression compressor, The lower cylinder is exhausted downwards, and then the gas compressed by the lower cylinder is drawn out at the auxiliary bearing (or other positions). The power loss caused by the exhaust is relatively large. Therefore, it is hoped to increase the exhaust passage area of ​​each stage of the cylinder. According to the conventional The idea is that the cylinders of each stage need to be set up in a double-row structure. Considering that the exhaust pressure of the upper cylinder and the lower cylinder is not equal, it is necessary to install three partitions between the upper cylinder and the lower cylinder. Isolation function, both the upper partition and the lower partition have an exhaust structure. After such a design, the height of the compressor will increase and the cost will increase, so this design is unreasonable

[0003] For the existing two-stage compression compressor, the pressure behind the sliding vane groove of the first stage cylinder is the exhaust pressure. Although this can ensure that the sliding vane follows the piston movement, it will obviously increase the force on the sliding vane, thereby aggravating the sliding. The friction between the tip of the plate and the piston affects the performance of the compressor

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