Double-cylinder compressor air conditioner and refrigeration method thereof

The invention relates to the technical field of refrigeration of double-cylinder compressor air conditioners and provides a double-cylinder compressor air conditioner and a refrigeration method thereof. The double-cylinder compressor air conditioner comprises a double-cylinder compressor, a switching unit, a temperature detection unit used for detecting outdoor environment temperature and a current detection unit used for detecting main current. During refrigeration, the compressor carries out trial running firstly in a single cylinder mode or a double cylinder mode according to a state of the outdoor environment temperature, and a running mode of the compressor is further regulated through the main current, comprising a compressor current, which can embody a current state of the whole machine of the air conditioner, so that the probability of protective shutdown of the air conditioner can be greatly lowered, the pressure of a system during running can also be reduced, and the system load is lowered.