| 摘要 |
PROBLEM TO BE SOLVED: To perform dissimilar-temperature evaporation in each evaporator while inhibiting pressure loss of a suction pipe of a compressor in a refrigerator wherein a plurality of evaporators are connected in parallel with one compressor. SOLUTION: The refrigerating device 1 comprises an air-conditioning heat exchanger 53, a refrigerating heat exchanger 43 for cooling a showcase, an outdoor heat exchanger 13 and a main compressor 11. In a cooling operation, a refrigerant discharged from the main compressor 11 and condensed by the outdoor heat exchanger 13 is partially evaporated in the refrigerating heat exchanger 43, flows to a first suction pipe 71 and is sucked to the main compressor 11 from a low-pressure port 11a, and the remaining refrigerant is evaporated in the air-conditioning heat exchanger 53, flows to a second suction pipe 72, and is sucked to the main compressor 11 from an intermediate pressure port 11b. Liquid injection pipes 67, 68 for supplying high-pressure liquid refrigerant are connected to the suction pipes 71, 72, and a first flow rate control portion 101 controls liquid refrigerant supply amounts of the suction pipes 71, 72. COPYRIGHT: (C)2008,JPO&INPIT
|
