| 摘要 |
PROBLEM TO BE SOLVED: To prevent oil choke in an expansion valve. SOLUTION: In this refrigeration apparatus provided with a refrigerant circulating route constituted by connecting a compressor 1, a condenser 2, the expansion valve 4 and an evaporator 5 by a closed loop, a pressure reducing means 3a for reducing a pressure of the refrigerant radiating heat at the condenser 2, to a two-phase region G of a gas-liquid mixing state, is disposed between the condenser 2 and the expansion valve 4, and the refrigerant is kept in the gas-liquid mixing state at an input portion of the expansion valve 4, thus a gas component is included, a density is reduced, and a flow velocity is increased. COPYRIGHT: (C)2008,JPO&INPIT
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