| 摘要 |
PROBLEM TO BE SOLVED: To provide a highly reliable refrigeration system, in which liquid compression caused by refrigerant flowing from a liquid injection circuit into a compressor and failure of compressor due to frequent start/stop can be prevented. SOLUTION: A liquid injection circuit 9 in then vicinity of a scroll compressor 1 is provided with a first solenoid valve 15 which openes during operation of the scroll compressor 1 and closes upon stoppage thereof. The liquid injection circuit 9 is further provided, on the upstream side of the first solenoid valve 15 in the direction of refrigerant flow, with flow regulation resistors 17, 18, and a second solenoid valve 16 which opens/closes, depending on the temperature of refrigerant delivered from the scroll compressor 1.
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