| 摘要 |
PROBLEM TO BE SOLVED: To appropriately adjust cooling capacity during cooling operation in utilization side circuits 11, 12, 13 in spite of the arrangement of the utilization side circuits 11, 12, 13 in a refrigerating device 20 with a plurality of utilization side circuits 11, 12, 13 connected in parallel to a heat source side circuit 14 having an expander 31. SOLUTION: A refrigerant fed to the utilization side circuits 11, 12, 13 from the heat source side circuit 14 is put in a single liquid phase state using cooling means 36, 45 or a gas-liquid separator 35. The utilization side circuits 11, 12, 13 are provided with variable opening utilization side expansion valves 51, 52, 53 to carry out expansion strokes in a refrigerating cycle also in the utilization circuits 11, 12, 13. COPYRIGHT: (C)2007,JPO&INPIT
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