Title:
【発明の名称】スクリュ圧縮機
Document Type and Number:
Japanese Patent JPH0792065
Kind Code:
B2
Abstract:
A screw compressor comprises a pair of screw rotors provided in a casing, a cylinder fixed to the casing and having a first chamber and a second chamber, a first piston fitted in the first chamber, a second piston fitted in the second chamber, a built-in volume ratio adjusting valve operated by the first piston, a volume control slide valve operated by the second piston, a stopper fixed to the casing to limit the backward movement of the built-in volume ratio adjusting valve, and a volume control slide valve. When built-in volume ratio adjustment is unnecessary, the built-in volume ratio adjusting valve is held immovable between the stopper and a spacer fixed to the built-in volume ratio adjusting valve and resting on a fixed surface of the casing. All the forces acting on the immovable built-in volume ratio adjusting valve are sustained by the casing, so that the rest of the components of the screw compressor are not exposed to excessive forces.
Inventors:
Shoji Yoshimura
Application Number:
JP17420790A
Publication Date:
October 09, 1995
Filing Date:
June 30, 1990
Export Citation:
Assignee:
KABUSHIKI KAISHA KOBE SEIKO SHO
International Classes:
F04C18/16; F04C28/12; F04C29/00; (IPC1-7): F04C18/16
Attorney, Agent or Firm:
Aoyama Ryo (1 person outside)
Next Patent: 回転型圧縮機