To solve a problem on the fracture and the impairing of performance of a compressor caused by the inflow of the liquid refrigerant to the compressor through an oil tank when the preparation operation before the cleaning operation is performed in an outdoor machine having a function as a refrigerant oil supply tank for a new refrigerant and a function as a recovering unit for residues in a pipe, and having a cleaning function of the existing pipe or the new pipe.
This air conditioning system comprises the compressor 2, an accumulator 6, and the oil tank 27 communicated with the compressor and the accumulator. In this system, an oil tank-side opening part 98b of the oil supply pipe 98 from the oil tank to the compressor is smaller than an inner diameter of the oil supply pipe.
MIZUNO IKUO
SUMIYA KOSUKE
AKATSUKA AKIRA
NOBUHARA HIROHIKO
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