| 摘要 |
PROBLEM TO BE SOLVED: To provide an air conditioning device in which an uneven flow of refrigerant is readily suppressed.SOLUTION: An air conditioning device 10 includes a four-stage compressor 20, first to forth heat exchangers 41-44, an indoor heat exchanger 12, switching mechanisms 31-34, an expanding mechanism 70, and a group of refrigerant pipes. The first to third heat exchangers 41-43 function as radiators for cooling a refrigerant with intermediate-pressure during compression in a cooling operation, and function as evaporators in a heating operation. The forth heat exchanger 44 functions as a radiator in a cooling operation, and functions as an evaporator in a heating operation. The group of refrigerant pipes are arranged so that the refrigerant flows to the first to third heat exchangers 41-43 in series in the heating operation. |
