Rotary compressor

Abstract

A rotary compressor comprises a housing, a motor, a compression pump located within the housing and a high-pressure chamber communication unit located on one side of the housing. When the rotary compressor is not in the start-up state, a solenoid valve of the high-pressure chamber communication unit is activated, so that the low-density refrigerant gas in the housing of the rotary compressor will be transferred to the bypass port through the connecting tube located in the inner space of the housing and enters the compression chamber of the cylinder of the compression pump 0˜180 seconds prior to the start-up time, which reduces the quality of the refrigerant in the suction-compression-exhaust cycle, and at the same time reduces the high and low pressure difference during the start-up period. The solenoid valve is then closed to reduce the start-up and maximum torque required during this period.