REFRIGERATOR

摘要

A refrigerator comprises a coolant circuit, which is obtained by connecting, in succession and using tubing, a compressor (3), a condenser (6), a liquid reservoir tank (10), a heat exchanger (28) for supercooling, a throttle valve (20), and an evaporator (21); a return circuit (29), which branches from the downstream position in the direction of coolant flow of the heat exchanger (28) for supercooling in the coolant circuit and joins with an intermediate pressure chamber (3A) of the compressor (3) via the heat exchanger (28) for supercooling; a throttle valve (49) for supercooling, which has a variable throttle aperture and is disposed on the coolant inflow side of the heat exchanger (28) for supercooling in the return circuit (29); an operating status detection means (61) for detecting operating status data in the coolant circuit; a dryness calculation means (62) for calculating the dryness of the coolant at the outlet side of the heat exchanger (28) for supercooling of the return circuit (29) on the basis of the detected operating status data; and a throttle valve for supercooling control means (64) for controlling the aperture of the throttle valve (49) for supercooling such that the calculated dryness is brought to a value of approximately 1.