| 摘要 |
PROBLEM TO BE SOLVED: To perform an energy-saving operation by sucking a refrigerant in a proper wet state that provides a highest performance coefficient or a coefficient close thereto to a compressor. SOLUTION: This refrigeration unit comprises a refrigerant circuit 20 performing a vapor compression type refrigeration cycle. The refrigerant is sucked to the compressor 31 in a wet state which provides an optimum performance coefficient according to an operation condition. When the operation condition is changed, the refrigerant to be sucked to the compressor 31 is adjusted to a wet state which provides the optimum performance coefficient according to a new operation condition by adjusting the opening of an expansion valve 23. COPYRIGHT: (C)2006,JPO&NCIPI
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