| 摘要 |
<p>A freezing machine system using a non-azeotropic type mixed refrigerant containing two or more refrigerant components, wherein by means of low temperature working fluid which is present in a circulation passageway extending through a compressor (1), a condenser (2), a throttle valve (4) and an evaporator (5) to return to the compressor and which returns from the evaporator to the compressor, working fluid present in a region extending from the condenser to the throttle valve is cooled by a heat exchanger (10), thereby lowering the temperature and vapor pressure of the refrigerant, thereby further lowering the temperature and pressure in the compression and condensation steps, thereby lowering the freezing machine system working pressure, promoting the condensation and liquefaction of the high vapor pressure, low boiling refrigerant components. Therefore, it is possible to lower the working pressure for the freezing machine system and to easily realize cryogenic temperatures using a high critical pressure, low critical temperature refrigerant as a mixed refrigerant component.</p> |
