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Patent Searching and Data


Title:
SCREW COMPRESSOR
Document Type and Number:
Japanese Patent JPS6341689
Kind Code:
A
Abstract:

PURPOSE: To restrain the vertical movement and rotation of a slide valve and prevent the wear of a screw rotor by bringing the end face of said slide valve into whole-face contact with the wall face of a casing when said slide valve is fully opened.

CONSTITUTION: Both the discharge side end face 14 of a casing 4 and the discharge side end face 15 of a slide valve 7 are vertically formed and are brought into whole-face contact with each other when the slide valve 7 is fully opened. By this structure, the vertical movement and the rotation of the slide valve 7 is restrained due to the whole-face contact of the discharge side end face 15 of the slide valve 7 with the discharge side end face 14 of the casing 4, and the contact between a screw rotor 1 and a slide valve 7 can be prevented, thereby, preventing the generation of unusual sound and the wear of the screw rotor 1 resulting from said contact.


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Inventors:
IZUSHI MINETOSHI
NOZAWA SHIGEKAZU
NAGATA KIMIO
Application Number:
JP18511986A
Publication Date:
February 22, 1988
Filing Date:
August 08, 1986
Export Citation:
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Assignee:
HITACHI LTD
International Classes:
F04C18/16; (IPC1-7): F04C18/16
Domestic Patent References:
JP58059990B
JPS56121893A1981-09-24
JPS57126589A1982-08-06
Attorney, Agent or Firm:
Masami Akimoto (1 person outside)