| 摘要 |
PROBLEM TO BE SOLVED: To provide a refrigerant circuit device capable of preventing abnormal stop of a compressor due to overload even during high cooling load.SOLUTION: A refrigerant circuit device includes a refrigerant circuit 10 configured by connecting between: an in-chamber heat exchanger 24 that is installed in each of three or more commodity storage chambers 3 and evaporates a refrigerant subjected to adiabatic expansion in an expansion mechanism 23; a compressor 21 for compressing the refrigerant evaporated in the in-chamber heat exchanger 24; and an outside heat exchanger 22 for radiating heat of the refrigerant compressed by the compressor 21, by using a refrigerant pipeline 25. A fan control part 40 is also provided that performs total blast volume reduction control for reducing the total amount of blast volume of each in-chamber blast fan F1 while maintaining supply of the refrigerant into the in-chamber heat exchanger 24 in a case where an outside air temperature exceeds a standard outside air temperature, when the internal temperature of each commodity storage chamber 3 exceeds a set internal temperature, when the radiation temperature of the refrigerant in the outside heat exchanger 22 exceeds the set radiation temperature, or when rapid cooling operation is performed. |
