Patent ID: 7690211

Claim:
A refrigerating apparatus comprising: a refrigeration cycle having one or more compressors or one or more inverter compressors, a condenser, an expansion valve and an evaporator; a liquid introduction circuit that, after guiding decompressed refrigerant that is obtained by extracting one part of high pressure liquid refrigerant from the refrigeration cycle and decompressing, to a supercooling heat exchanger provided in the refrigeration cycle and causing the decompressed refrigerant to experience heat transfer with the high pressure liquid refrigerant, introduces the decompressed refrigerant into refrigerant to be drawn into the compressors or the inverter compressor or an intermediate pressure part of these compressors; control means that controls shutdown of the compressors or a driving frequency of the inverter compressor based on a detection value for the suction pressure with respect to a pressure setting value for suction pressure of the compressors or the inverter compressor; and flow control means that controls a flow amount of the high pressure liquid refrigerant flowing through the liquid introduction circuit based on a circulating volume of refrigerant in the refrigeration cycle.