| 摘要 |
PURPOSE: A cooling device of very low temperature is provided to freeze a freezer compartment into vary low temperatures by using a single freezing cycle because a mixed refrigerant that refrigerants having different boiling points each other are mixed is used and the rest vapor refrigerant of refrigerant passed through an evaporator is expanded and evaporated after sufficiently liquidizing by installing a vapor liquid separator and heat exchanger. CONSTITUTION: A cooling device of very low temperature comprises a compressor(10), a condenser(20), an expansion valve(30), and an evaporator. The compressor compresses a vapor refrigerant of low temperatures and low pressures into high temperatures and high pressures. The condenser condensed the compressed refrigerant. The expansion valve expands a liquid refrigerant into the vapor refrigerant of low pressures. The evaporator absorbs heat from outside by evaporating the liquid refrigerant expanded in the expansion valve, thereby sending the vapor refrigerant of low temperature and low pressures. A refrigerant of the freezing device is a mixed refrigerant. An elimination unit of the vapor refrigerant is installed between the condenser and the expansion valve. The elimination unit of the vapor refrigerant converts the rest vapor refrigerant of the condensed refrigerant in the condenser into the liquid refrigerant. |
