| 摘要 |
PURPOSE:To prevent dewing during cooling operation, make the new provision of a heat source for heating a medium unnecessary, and improve a refrigerating efficiency, by guiding the medium, heated by the high-temperature refrigerant of a refrigerating circuit, into the inner space of an airflow direction changing blade. CONSTITUTION:When a compressor 1 is driven to start cooling operation and a fan 19 is driven, the heat of the high-temperature refrigerant, which flows through a refrigerant inlet pipe 7, and the heat of air, which flows through the vessel 10 of a heat exchanger 6, are exchanged efficiently in a heat transfer vessel, and the air in the vessel 10 is heated. The heated air is guided from the outlet port 9 of the vessel 10 into the inner space of an airflow direction changing blade 21 through the inlet port 16 of a circulating device 15, the outlet port 17 of the same, and the inlet port 22 of the same blade 21, therefore, the airflow direction changing blade 21 is kept at a high temperature and dew condensation will never be generated. On the other hand, the air, cooled upon passing through the airflow direction changing blade 21, flows through the inlet port 8 of the heat exchanger 6, and cools the refrigerant passing through the refrigerant inlet pipe 7 to the temperature of overcooling, therefore, the pressure of the refrigerant, passing through a pressure reducing element 3, is reduced to the optimum pressure, in which flash gas is not generated, whereby a refrigerating efficiency may be improved. |
