Vertical two-stage rotary compressor for refrigerator and working method thereof

Abstract

A vertical two-stage rotary compressor for a refrigerator and its working method. The compressor includes a casing, an outer rotor motor contained inside the casing, a pump body, a low-pressure suction pipe distributed on the casing, and a medium-pressure suction pipe. Intake pipe, high-pressure exhaust pipe and bracket; the outer rotor motor is composed of stator and rotor; the pump body is composed of crankshaft, intermediate partition, first-stage compression part, second-stage compression part and medium-pressure exhaust anechoic chamber , its working method is: the low-pressure refrigerant gas is inhaled through the low-pressure suction pipe, compressed by the first-stage compression part to the medium pressure, and then discharged into the medium-pressure exhaust anechoic chamber, and the medium-pressure refrigerant gas inhaled by the medium-pressure intake pipe Mixed, then compressed to high pressure by the second-stage compression part, the exhaust gas is first discharged to the top of the casing along the flow channel and then discharged from the middle of the casing; the invention effectively reduces the overall height of the vertical rotary compressor and meets the requirements of the refrigerator system. Design requirements; by setting an internal liquid storage system, the safety and efficiency of compression are ensured, and the configuration of the refrigerator system is simplified.

Description

technical field [0001] The invention relates to a two-stage compression rotary compressor, in particular to a vertical two-stage rotary compressor for a refrigerator and a working method thereof. Background technique [0002] As the heart of the entire refrigerator refrigeration cycle system, the compressor compresses the refrigerant vapor from a low-pressure state to a high-pressure state to provide power for the cycle, so that the refrigeration cycle can be repeated. Ensuring the reliable operation of the compressor is of paramount importance. [0003] Compared with other compressors, the refrigerator system has strict requirements on the design size of the compressor, especially to ensure that its height meets the system design requirements. The working environment of refrigerator compressors is indoors, so the requirements for vibration and noise are relatively high. At the same time, it must be able to meet the changing cooling needs of the refrigerator. [0004] Exi...

AI Technical Summary

Problems solved by technology

The problem is that the difference in structure between the horizontal and vertical makes the horizontal type unable to directly use the oil circuit system of the vertical rotary compressor, and the additional oil supply system needs to be redesigned

The characteristics of the refrigerator system require all components to be as simple as possible, so a simple and efficient oil supply system for horizontal rotary compressors has not been designed, and the oil supply problem has not been solved, especially when the working conditions change. Insufficient oil supply is prone to occur, which will eventually lead to increased wear of the compressor and shortened service life.

Affect the stability of the refrigerator system, and even cause the compressor to burn out in severe cases

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