| 摘要 |
PROBLEM TO BE SOLVED: To provide a highly reliable refrigeration unit using a refrigeration cycle reducing the power consumption, improving efficiency, and driven by commercial power supply. SOLUTION: This refrigeration unit having the refrigeration cycle is provided with a plurality of motor-driven compressors 1a and 1b. This unit is also provided with a capacity-controllable variable speed type compressor 1a and a constant speed type motor-driven compressor 1b having a cage-type conductor and a permanent magnet around an iron core of a rotor. COPYRIGHT: (C)2003,JPO |
