| 摘要 |
PROBLEM TO BE SOLVED: To reduce the torque variation of a compressor provided with two compression mechanisms of a rotary type and a scroll type. SOLUTION: The compressor 1 includes: a hermetic housing 2; a low stage-side rotary type compression mechanism 3 provided in the housing 2; a high stage-side scroll type compression mechanism 4; and an electric motor 21 for driving both the compression mechanisms 3 and 4. When the rotor 34 of the rotary type compression mechanism is positioned within the range from the position corresponding to the bottom dead center to that after 90°rotation from the bottom dead center, the suction of the scroll type compression mechanism is shut off. COPYRIGHT: (C)2009,JPO&INPIT
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