| 摘要 |
PROBLEM TO BE SOLVED: To provide an engine-driven heat pump type air conditioner capable of improving engine efficiency.SOLUTION: An engine-driven heat pump type air conditioner includes a refrigerant circuit Z including an outdoor heat exchanger 11, an indoor heat exchanger 21, an expansion valve 23, and a plurality of compressors 16-18 functioning only for the indoor heat exchanger 11 and the outdoor heat exchanger 21, a plurality of engines 14, 15, and a control unit 10 which controls the respective engines 14, 15. One or more compressors are connected to the respective engines 14, 15, and the control unit 10 selects some of the engines according to the load of air conditioning, and varies only the rotating speeds of the selected engines according to the load of air conditioning until the selected engines are stopped or the engines reach a rated rotational speed. |
