AIR CONDITIONER HAVING UNIFORM OIL FUNCTION FOR STABLY EXECUTING AIR-CONDITIONING OPERATION

摘要

PURPOSE: An air conditioner having a uniform oil function is provided to stably execute air-conditioning operation or heating operation by enabling elimination of uniform oil operation. CONSTITUTION: An air conditioner having a uniform oil function comprises plural outdoor units(22a,22b) each having a compressor(23) for compressing a refrigerant, and an outdoor heat exchanger(25) in which the refrigerant is exchanged with heat; oil sensors(47a,47b) sensing the oil surface of oil in each compressor; plural compressor connection oil pipes(41); a main oil pipe(43); oil pumps(45a,45b) pumping the oil to make the oil of the compressor of each different outdoor unit flow into the compressor of the corresponding outdoor unit; and a control part controlling the oil pumps on the basis of the sensed result of each oil sensor. Each one end of the compressor connection oil pipes is connected to the inside of the compressors to make the oil in the compressor of each outdoor unit flow. The main oil pipe is combined with each other end of the compressor connection pipes.