| 摘要 |
PROBLEM TO BE SOLVED: To provide a control method of a multi-chamber type air conditioner which can level an oil level of each compressor in response to operation and stop of a plurality of compressors without using an oil equalizing tube and which can improve assembling workability and serviceability. SOLUTION: In a control method of a multi-chamber type air conditioner, wherein an indoor unit formed of a plurality of compressors, a four-way valve, an outdoor heat exchanger and a throttle mechanism and a plurality of indoor units are connected to form a coolant circuit, for controlling operation/stop of each compressor in response to a load fluctuation of the indoor heat exchanger, an oil separator is connected between a discharge side junction of each compressor and the four-way valve, and each bypass passage is provided between an oil return pipe of the oil separator and each suction side of each compressor through a valve. In the case where some of the compressors are operated and some of the compressors are stopped, when the cumulative operation time of the operated compressor reaches the predetermined time, the valve corresponding to the compressor which is stopped is opened to return the refrigerator oil inside of the oil separator to the stopped compressor so that the oil level of each compressor is leveled. COPYRIGHT: (C)2004,JPO
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