REFRIGERATION DEVICE

摘要

When a refrigeration device (20) performs cooling operation, the device is provided with heat source-side opening degree control means (53) that controls the degree of opening of a heat source-side expansion valve (36) so that the pressure of refrigerant flowing into a utilization-side expansion valve (51) during cooling operation is lower than or equal to a predetermined standard pressure value. When the refrigeration (20) performs heating operation, the device is provided with utilization-side opening degree control means (38, 54) that, when multiple utilization units (61) includes, during heating operation, an utilization unit (61) using a small flow amount of refrigerant that is less than an amount required for the refrigerant to exhibit its ability, reduces the degree of opening of the utilization-side expansion valves (51) of the utilization units (61) other than the utilization unit (61) using the small flow amount of the refrigerant.