PURPOSE: To control the cooling characteristics by cooling refrigerant mixture, separating and storing the component having high critical temperature, and forming a refrigerating cycle with the mixture refrigerant in which the component of low critical temperature is increased. ;CONSTITUTION: Non-azeotrope refrigerant mixture to be fed is separated into a vapor-phase component containing a component A having low critical temperature of an upper part in a vapor-liquid separator 6 and a liquid-phase component containing a component B having high critical temperature of a lower part. The component B is stored in the separator 6, the vapor-phase component containing the component A of the low critical temperature of the upper part is introduced into a main condenser 2b, condensed to be liquefied, pressure- reduced by a capillary tube 3, a low temperature is generated by an evaporator 4, and then sucked into a compressor 1 via an accumulator 5. The component B stored in the separator 6 can be returned to a refrigerant circuit via a pipeline (broken line) 9 or a pipeline (chain single-dashed line) 19 for connecting the separator 6 to the outlet of the evaporator 4.;COPYRIGHT: (C)1996,JPO
展开▼
