Rotary compressor

Abstract

The invention relates to a rotary compressor which comprises a sealed container, an electric motor, a rotating shaft, a lower compression combination, an upper compression combination and an engine oil separating plate, wherein the sealed container is provided with an inflow pipe and a discharge pipe and stores engine oil at the bottom; the electric motor is arranged in the sealed container near the discharge pipe and generates rotary force; the rotating shaft supplies the engine oil and transmits rotary force generated by the electric motor; the lower compression combination is positioned inthe sealed container and compresses refrigerant when the rotating shaft rotates; the upper compression combination is positioned at the upper side of the lower compression combination and compresses the refrigerant when the rotating shaft rotates; and the engine oil separating plate is arranged between the electric motor and the upper compression combination, crushes the refrigerant discharged bythe upper compression combination before the refrigerant flows through the electric motor and separates the refrigerant and the engine oil. Because the engine oil and the refrigerant are separated andrecovered by the engine oil separating plate before the refrigerant flows through the electric motor, the engine oil and the refrigerant are prevented from flowing out of the sealed container together; because the engine oil is rapidly recovered, both the compression performance and the operating reliability of the compressor are improved.

Description

technical field [0001] The present invention relates to a rotary compressor, in particular to a rotary compressor which can prevent lubricating machine oil and compressed refrigerant from being discharged through a discharge pipe. Background technique [0002] Generally, a compressor is a mechanical device that compresses air or refrigerant and various working fluids after receiving power from a power generating device such as a motor or an engine, and can increase its pressure. It is widely used in refrigerators, air conditioners and other household appliances or entire in the industrial field. [0003] This kind of compressor can be roughly divided into reciprocating compressor (Reciprocating compressor), rotary compressor (Rotary compressor) and turbo compressor (Scroll compressor); reciprocating compressor forms an inhalable working fluid between the piston and the cylinder In the compression space, the piston moves back and forth in a straight line inside the cylinder ...

AI Technical Summary

Problems solved by technology

However, the existing two-stage rotary compressor does not adopt an oil separation structure, so the oil and the refrigerant will pass through the low-pressure compression structure 2020a, the high-pressure compression structure 2020b, and the motor 2014 to rise and then be discharged to the outside.

This structure not only reduces the compression performance, but also reduces the reliability of the action

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