| 摘要 |
PROBLEM TO BE SOLVED: To suppress degradation of a heating capacity by properly controlling a supercooling degree even when liquid pressure loss is large, in a refrigeration device in which an opening of a utilization-side flow rate adjustment valve is controlled on the basis of the supercooling degree of a refrigerant at an outlet of a utilization-side heat exchanger.SOLUTION: In an operation in which a heat source unit 2 having a receiver 28, and utilization units 3a-3d having utilization-side flow rate adjustment valves 51a-51d and utilization-side heat exchangers 52a-52d are connected through a refrigerant communication pipe 7, and the utilization-side heat exchangers are functioned as a radiator of a refrigerant, the receiver is provided with a receiver gas vent pipe 41 connecting an upper portion of the receiver and a suction side of a compressor 21, the receiver gas vent pipe is provided with a gas vent-side flow rate adjustment valve 42 capable of adjusting an opening, and the opening of the gas vent-side flow rate adjustment valve is controlled to satisfy a normal condition of control of supercooling degree in which the utilization-side flow rate adjustment valve implementing the control of supercooling degree, can control the supercooling degree. |
