PURPOSE: To prevent a displacement at the time of assembling to improve assembling precision, and prevent a blade overturning accompanied by circulating movement of a turning scroll blade to eliminate the leak of a fluid during compression and improve compressing performance by fixing the relative position between center of a bearing supporting a main shaft and the center of a fixed scroll blade.
CONSTITUTION: A main shaft part 54a extending upward of a main shaft 54 supported by a main shaft bearing 53a integrated with a fixed scroll blade 53 has an electric motor part 55, and an eccentric part 54b is integrally provided on the main shaft part 54a lower part of the main shaft 54, and a turning scroll blade 58 is fixed thereto in such a manner as to be capable of circulating. A sub-shaft part 54c is integrally provided on the eccentric part 54b lower part of the main shaft 54, and the sub-shaft part 54c is rotatably supported in the center part of a sub-bearing 59 by a boss part 59a projecting upward. The sub-bearing 59 is fixed in its peripheral flange part 59b to the lower surface of the flange part 53b of a fixed scroll blade 53 through fixtures 60..., and a float type thrust ring 63 is received in the ring recessed part 61 around the boss part 59a the sub-bearing 59, and an Oldham's ring 65 is provided the ring recessed part 61.
INOUE TOSHITSUNE
NAGATOMO SHIGEMI
SASAHARA YUTAKA
MORISHIMA AKIRA
