| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a refrigeration device capable of preventing increase of pressure loss in a gas side connection pipe having low pressure or the like even if using refrigerant having large specific volume such as HFO-1234yf in refrigeration cycle to ensure satisfactory refrigeration performance. <P>SOLUTION: In this refrigeration device, an outdoor unit 100 provided with a compressor 1, an outdoor heat exchanger 3, a heat exchanger 8 for overcooling, an outdoor pressure reducing device 7, and an ejector 5 and an indoor unit 200 provided with an indoor heat exchanger 11 are mutually connected by a refrigerant pipe to constitute the refrigeration cycle. A part of liquid refrigerant fed into the heat exchanger operating as an evaporator is bypassed, pressure of the bypassed refrigerant is reduced to let this refrigerant flow into the heat exchanger for overcooling, and a main stream of the liquid refrigerant is cooled by the heat exchanger for overcooling and is supplied into the indoor heat exchanger. The bypassed refrigerant evaporated after exchanging heat with the main stream refrigerant is sucked by the ejector and then flows into a gas-liquid separator 6. The gas refrigerant in the gas-liquid separator has high pressure exceeding suction pressure of the compressor and is sucked into the compressor. <P>COPYRIGHT: (C)2010,JPO&INPIT |
