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A refrigerating device including a refrigerating cycle including a plurality of compressors driven by motors, the plurality of compressors comprising a variable speed compressor which can be controlled in capacity and a constant speed compressor which is driven by a motor of which rotor core compris

A refrigerating device including a refrigerating cycle including a plurality of compressors driven by motors, the plurality of compressors comprising a variable speed compressor which can be controlled in capacity and a constant speed compressor which is driven by a motor of which rotor core comprising a cage type conductor and permanent magnets.

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1. A refrigerating device comprising a refrigerating cycle including a plurality of compressors driven by motors, said plurality of compressors comprising a variable speed compressor which can be controlled in capacity and a constant speed compressor which is driven by a motor including rotor core c

1. A refrigerating device comprising a refrigerating cycle including a plurality of compressors driven by motors, said plurality of compressors comprising a variable speed compressor which can be controlled in capacity and a constant speed compressor which is driven by a motor including rotor core comprising a cage type conductor and permanent magnets. 2. A refrigerating device as claimed in claim 1, wherein said refrigerating device is an air conditioner having an outdoor heat-exchanger and an indoor heat-exchanger. 3. A refrigerating device as claimed in claim 1, wherein said permanent magnets are bipolar magnetized. 4. A refrigerating device as claimed in claim 1, wherein said constant speed compressor comprises a scroll compressor. 5. A refrigerating device as claimed in claim 1, wherein a check valve is provided on a discharge side of the constant speed compressor. 6. A refrigerating device as claimed in claim 1, wherein said variable speed compressor is driven by an inverter electric source and thereafter said constant speed compressor is driven. 7. A refrigerating device comprising a refrigerating cycle including a plurality of compressors, said plurality of compressors comprising a compressor which is driven by a motor including rotor core comprising a cage type conductor and permanent magnets and a compressor which is driven by an inverter electric source. 8. A refrigerating device as claimed in claim 7, wherein said refrigerating device is an air conditioner having an outdoor heat-exchanger and an indoor heat-exchanger. 9. A refrigerating device as claimed in claim 7, wherein said permanent magnets are bipolar magnetized.