Rotating compressor and refrigeration system provided with same

Abstract

The invention discloses a rotating compressor and a refrigeration system provided with the same. An electro-dynamic motor, a rotating compression mechanism and lubricating oil are accommodated in a closed casing of the rotating compressor, a suction pipe communicated with the interior of the casing is arranged on the casing, and the motor comprises a stator and a rotor. The compression mechanism comprises an eccentric shaft for fixing the rotor, a main bearing, an auxiliary bearing, an air cylinder connected with the main bearing and the auxiliary bearing and a suction muffler arranged on the main bearing, wherein the main bearing and the auxiliary bearing are used for supporting the eccentric shaft in a sliding manner; a rotating barrel is fixed on the side, adjacent to the main bearing, of the rotor, and is communicated with the suction muffler; low-pressure refrigerant sucked from the suction pipe reaches the inner side of the rotating barrel from the outer side of the rotating barrel and flows into a compression cavity of the air cylinder through the suction muffler. According to the rotating compressor, the rotating barrel can have an air-liquid separation function, the compression efficiency is guaranteed, and liquid compression of the compression cavity is avoided.

Description

technical field [0001] The invention relates to the refrigeration field, in particular to a rotary compressor and a refrigeration system with the same. Background technique [0002] In order to achieve environmental protection concepts such as avoiding global warming, the use of natural refrigerants such as carbon dioxide gas and hydrocarbon gas has attracted much attention. The flammable refrigerant R290 and ultra-high pressure refrigerant CO 2 Research and practical introduction in rotary compressors are advancing. Since hydrocarbon gas is highly flammable, it is necessary to limit the amount of refrigerant enclosed in the refrigeration cycle. [0003] On the other hand, CO 2 The operating pressure of the gas is very high, and a high-pressure shell requires a normal pressure of 10Mpa or more. Against such a background, full-scale practical application of a low-pressure rotary compressor with a small housing or a thin housing wall is strongly expected. [0004] Compared...

AI Technical Summary

Problems solved by technology

The existing low-pressure rotary compressor with a shell has an accumulator in the suction circuit that communicates with the compression chamber. Although the suction of liquid refrigerant can be avoided, the increase in cost and the loss of compactness due to the addition of the accumulator are unacceptable.

Images