REFRIGERATION CYCLE DEVICE

摘要

A refrigeration cycle device using carbon dioxide (CO2) as a refrigerant is capable of preventing drawbacks, such as a sudden rise in high pressure at the start, and the compressor failing to be satisfactorily started owing to the actuation of a high pressure protection mechanism, by installing an oil separator as a refrigerant container in part of a high pressure side circuit, or by using an oil-less type or oil-poor type linear compressor, or by constructing a refrigeration cycle device in which the amount of CO2 refrigerant sealed in the circuit is not more than 0.25 kilogram per liter on the basis of the total inner volume of the circuit.