Compressor and motor assembly thereof

Abstract

The invention discloses a motor assembly, which comprises an upper cavity and a lower cavity, a rotor is arranged between the upper cavity and the lower cavity, and an air flow passage connecting the upper cavity and the lower cavity is provided on the inner side of the rotor , a main channel is also connected between the upper chamber and the lower chamber. During assembly and operation, due to the adoption of a double-channel structure consisting of an airflow channel and a main channel, the gas discharged from the pump body of the compressor passes directly into the upper chamber through the airflow channel in whole or in part from the lower chamber, and is refrigerated. The refrigerating oil brought to the upper cavity by the agent can quickly return to the lower cavity and the oil pool through the main channel, thus effectively avoiding the accumulation of the refrigerating oil in the upper cavity due to the influence of the air flow during the return process of the refrigerating oil, and effectively ensuring the oil retention of related components. The effect of liquid lubrication, and the oil discharge of the compressor is reduced accordingly. The invention also discloses a compressor using the motor assembly.

Description

technical field [0001] The invention relates to the technical field of compressor supporting components, in particular to a motor assembly. The invention also relates to a compressor using the motor assembly. Background technique [0002] During the operation of the existing compressor, the high-temperature and high-pressure gas compressed by the pump body enters the lower chamber of the motor through the upper bearing and the exhaust port of the muffler, and the refrigerant gas containing refrigerated oil passes through the gap between the stator and the rotor of the motor. Wait for the airflow channel to enter the upper cavity of the motor. In order to ensure the efficiency of the motor, the above-mentioned airflow channel is usually relatively narrow, so there is a large pressure difference between the upper and lower chambers of the motor. Since the pressure in the lower chamber of the motor is higher than the pressure in the upper chamber of the motor, and the air flo...

AI Technical Summary

Problems solved by technology

Since the pressure in the lower chamber of the motor is higher than the pressure in the upper chamber of the motor, and the air flow channel is small, the refrigerant oil brought into the upper chamber of the motor by the refrigerant gas will accumulate in the upper chamber of the motor, and the gas discharged from the lower chamber will continuously impact the accumulated refrigerant oil. Oil, so that the refrigerated oil accumulated in the upper chamber is in a tumbling state, which will greatly increase the oil discharge of the compressor, and the refrigerated oil cannot return to the oil pool in time, which will also affect the long-term reliability of the compressor

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