To provide a compressor both generating a low noise and having high efficiency without requiring high machining precision by applying the constitution that a shaft and a rotor fixed to the shaft are moved upward via a magnet pull force generated between a stator and the rotor during a stable operation, and both edges of an eccentric part is kept in such a state as not in contact with upper and lower bearings.
Gases drawn into the cylinder 4 of a compressor part Y in a sealed vessel 1 are compressed, due to the reduction of the capacity of a compression chamber on the rotation of a rotor 5, pass a delivery valve 12 and are discharged to the sealed vessel 1 via a delivery muffler 13. Then, the delivered gases flow through a gap between the rotor 2 and the stator 3 of a motor part Z, and are discharged to the outside of a compressor via a delivery pipe 19. In this case the stator 3 and the rotor 2 are vertically offset by the prescribed distance, and a shaft 6 and the rotor 2 are moved upward, using a magnet pull force generated between the stator 3 and the rotor 2. Also, both edges 6B of the eccentric part 6A of the shaft 6 are maintained in a non-contact state for upper and lower bearings 7 and 8.
SUZUKI ETSURO
SUMIYA MASAHIRO
