The quick freezing cycle device and the quick freezing mannered null compressor,

摘要

PROBLEM TO BE SOLVED: To provide a rapid freezing cycle device and a rapid freezing method using the same in which a maximum freezing capability can be realized over a wide range of evaporating temperature and further a freezing processing capability can be improved.;SOLUTION: There is provided a rapid freezing cycle device 1 in which compressors 3, 5, a condenser 9, an expansion valve 15 and an evaporator 17 are connected in series in an annular form by a refrigerant pipe. In this rapid freezing device, a first compressor 3 and a second compressor 5 are arranged side by side in which freezing capabilities are reversed to each other with an interface of a predetermined evaporating temperature of refrigerant. There is provided an operation controller for detecting the evaporating temperature and changing over its operation to the compressors 3, 5 where a high freezing capability can be attained at the detected temperature.;COPYRIGHT: (C)2002,JPO