Refrigerant circulation apparatus utilizing two evaporators operating at different evaporating temperatures

摘要

A refrigerant circulation apparatus utilizing two evaporators operating at respectively different evaporating temperatures which is capable of efficient refrigerant circulation by performing a heat exchange by contact between a refrigerant pipe guiding refrigerant discharged from a condenser to an evaporator and a refrigerant pipe guiding refrigerant discharged from the evaporator to a compressor in order to enhance the refrigerating ability when an evaporator is operated at a high evaporating temperature and pressure, includes a compressor, a condenser, a plurality of evaporators operating at different respective evaporating temperatures, a first plurality of refrigerant pipes for guiding the refrigerant discharged from the condenser to the plurality of evaporators, and a second plurality of refrigerant pipes predetermined portions of which are in heat exchanging contact with the first plurality of refrigerant pipes.