| 摘要 |
PROBLEM TO BE SOLVED: To provide a refrigeration device capable of easily avoiding large reduction in frequency in a compressor, while securing reliability of the compressor.SOLUTION: A refrigeration device includes a heat source unit and a plurality of utilization units, and it can perform a cooling operation and a heating operation simultaneously. A heat source side control unit performs: load processing control as normal control; drooping control for largely reducing the frequency for compressor protection; and protection control for lowering frequency of the compressor for compressor protection at a reduction degree smaller than that of the drooping control. The heat source side control unit performs the protection control when at least one of a condition for condensation temperature, a condition for evaporation temperature and a condition for discharge refrigerant temperature is satisfied. |
