(19)
(11) EP 0 435 193 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
19.02.1992 Bulletin 1992/08

(43) Date of publication A2:
03.07.1991 Bulletin 1991/27

(21) Application number: 90125094.4

(22) Date of filing: 21.12.1990
(51) International Patent Classification (IPC)5: F04C 18/107
(84) Designated Contracting States:
DE IT

(30) Priority: 26.12.1989 JP 337524/89
13.04.1990 JP 96304/90
13.04.1990 JP 98432/90
13.04.1990 JP 98437/90

(71) Applicant: KABUSHIKI KAISHA TOSHIBA
Kawasaki-shi, Kanagawa-ken 210 (JP)

(72) Inventors:
  • Fujiwara, Takayoshi, c/o Intellectual Property Div
    Minato-ku, Tokyo 105 (JP)
  • Honma, Hisanori, c/o Intellectual Property Div.
    Minato-ku, Tokyo 105 (JP)
  • Sone, Yoshinori, c/o Intellectual Property Div.
    Minato-ku, Tokyo 105 (JP)
  • Hirayama, Takuya, c/o Intellectual Property Div.
    Minato-ku, Tokyo 105 (JP)

(74) Representative: Henkel, Feiler, Hänzel & Partner 
Möhlstrasse 37
81675 München
81675 München (DE)


(56) References cited: : 
   
       


    (54) An axial flow fluid compressor and a method of assembling the same


    (57) A compressor includes a cylinder (7), and a rotating body (8) located in the cylinder. A spiral groove (11) is formed on the outer periphery of the rotating body. A spiral blade (9) is fitted in the groove and divides the space between the inner periphery of the cylinder and the outer periphery of the rotating body into operating chambers (10) which have volumes gradually decreasing with distance from one end of the cylinder. A drive motor (4) rotates the cylinder and the rotating body relative to each other. The drive motor includes a cylindrical stator (17) fixed on a closed casing and a rotor (18) mounted on the cylinder (7) and situated inside the stator (17) coaxially, with a motor air gap provided therebetween. A main bearing (15) is engaged with the axial end portion of the cylinder (7) and fixed on the inner wall of the casing by means of a fixing member (20) situated radially more inward than the stator. The main bearing is fixed on the closed casing, with the position of the main bearing adjusted by a master rotor.






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