REFRIGERATOR

摘要

PURPOSE: A refrigerator is provided to keep predetermined amount of oil depending on oil amount difference between a first compressor and a second compressor. CONSTITUTION: A refrigerator comprises multiple compressors(11,12). The compressor compresses the refrigerant in multi stage. An oil recovery unit is installed in an outlet of at least one compressor and has an oil separation part and an oil recovery part. The oil recovery unit separates oil in the refrigerant discharged from the compressor and collects the separated oil to one of the compressors. The oil separation part separates the oil from the refrigerant and the oil recovery part collects the separated oil into the compressor.