REFRIGERATOR

摘要

A refrigerator provided with a refrigerant circuit in which a compressor 3, a condenser 6, a liquid container 10, a supercooling heat exchange portion 28, a throttle valve 20, and an evaporator 21 connected in this order by piping, a return circuit 29 that branches from a downstream position in a refrigerant flowing direction of the supercooling heat exchange portion 28 in the refrigerant circuit and leads to an intermediate-pressure chamber 3A of the compressor 3 via the supercooling heat exchange portion 28, a supercooling throttle valve 49 with a variable valve opening-degree that is disposed on a refrigerant inlet side of the supercooling heat exchange portion 28 in the return circuit 29, and operation state detecting means 61 that detects operation state data in the refrigerant circuit, in which dryness-degree calculating means 62 that calculates a dryness-degree of the refrigerant on the outlet side of the supercooling heat exchange portion 28 in the return circuit 29 on the basis of the detected operation state data and supercooling throttle valve control means 64 that controls the valve opening-degree of the supercoolling throttle valve 49 so that the calculated dryness-degree gets close to the value of 1.