| 摘要 |
For cooling operation, a refrigeration apparatus (20) includes a heat-source-side valve opening control means (53) for controlling a degree of opening of a heat-source-side expansion valve (36) so that pressure of a refrigerant flowing into the utilization-side expansion valve (51) in the cooling operation becomes equal to or lower than a predetermined reference pressure value. For heating operation, the refrigeration apparatus (20) includes a utilization-side valve opening control means (38, 54) for performing, when a low-quantity utilization unit (61) in which a quantity of the refrigerant falls below a quantity of the refrigerant required for delivering capacity of the utilization unit (61) is found among a plurality of the utilization units (61) in the heating operation, valve opening reducing operation of reducing a degree of opening of the utilization-side expansion valve (51) of the utilization unit (61) except for the low-quantity utilization unit (61).
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