| 摘要 |
PROBLEM TO BE SOLVED: To provide a compressor capable of canceling unbalance of a compression mechanism part with a simple structure while materializing miniaturization with using an axial gap type motor, and of improving productivity and materializing further miniaturization. SOLUTION: An axial gap type motor 3 includes a stator 40 having a coil 63 wound around a magnetic body; an upper rotor 30 and a lower rotor 50 fixed on a rotary shaft 4, opposing to the stator 40 in the axial direction, and including a roughly disk-like back yoke 31 and a magnetic pole part projecting to the stator 40 side from the back yoke 31; and a rotor eccentric axis part putting centers of gravity of the upper rotor 30 and the lower rotor 50 in eccentric positions to cancel unbalance of a compression mechanism part 2. The rotor eccentric axis part is a through-hole used as a refrigerant passage passing through the upper rotor 50 in the axial direction, and puts the center of gravity of the upper rotor 30 at the eccentric position by using a permanent magnet 32 which is the magnetic pole part of the upper rotor 30. COPYRIGHT: (C)2008,JPO&INPIT
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