Compression mechanism of rotary compressor and rotary compressor

Abstract

The invention discloses a compression mechanism of a rotary compressor and the rotary compressor. The compression mechanism of the rotary compressor includes a first cylinder, a second cylinder, a crankshaft, a first end plate, a second end plate and a partition plate. A first limiting part is arranged on the end surface of an intermediate shaft. A second limiting part matched with the first limiting part is arranged on the end surface, facing the intermediate shaft, of at least one of a first eccentric part and a second eccentric part. The partition plate is provided with a rotating shaft hole and the intermediate shaft is arranged in the rotating shaft hole in a matched mode. The outer diameter of a first rotating shaft is d0, the outer diameter of a second rotating shaft is d1, the outer diameter of the intermediate shaft is d2, the diameter of the rotating shaft hole is d3, the outer diameter of the first eccentric part is D1, the outer diameter of the second eccentric part is D2,d0<=d1<d2<=d3<D1, and d0<=d1<d2<=d3<D2. According to the compression mechanism of the rotary compressor, the displacement of the rotary compressor can be enlarged, the compression efficiency can be improved, the rigidity of the crankshaft can be improved, the reliability and durability of torque transmission are high, and the production efficiency is high.

Description

technical field [0001] The present invention relates to the technical field of compressors, in particular to a compression mechanism of a rotary compressor and a rotary compressor having the compression mechanism of the rotary compressor. Background technique [0002] Inverter-motor-type twin-cylinder rotary compressors have little change in compression torque compared to single-cylinder rotary compressors, and can operate below 30Hz. etc. have advantages. [0003] In the twin-cylinder rotary compressor in the related art, if the inner diameter of the partition between the two cylinders is smaller than the outer diameter of the eccentric shaft and the outer diameter of the intermediate shaft pre-fixed on the crankshaft, the compression mechanism cannot be assembled. Therefore, the inner diameter (d3) of the separator≧the outer diameter (D) of the eccentric shaft. [0004] Due to the limitation of this design condition, if the inner diameter of the partition increases, the ...

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Problems solved by technology

[0006] However, it is very difficult to maintain the planar accuracy of the partition that is divided into two parts, and the intermediate shaft is divided into two sections for processing mainly to improve the strength of the intermediate shaft (just make d1<d2), the two methods very few practical applications

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