Title:
SCREW FLUID MACHINE
Document Type and Number:
Japanese Patent JP2017110517
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide proper screw rotor cooling means in an oil cooled screw fluid machine to which oil is injected during a compression process.SOLUTION: As a constitution of cooling means for cooling inside of a male rotor 5 and a female rotor 6, the male rotor 5 has a male rotor internal hole 5a not penetrating through the inside of the male rotor 5. Further in the male rotor internal hole 5a, an internal passage portion 21a of a fixed cooling passage member 21 for the male rotor is disposed. The internal passage portion 21a is a part of the fixed cooling passage member 21 for the male rotor fixed to a motor casing cover 12, and is fixed to the motor casing cover 12, so that it is not rotated with the male rotor 5. A female rotor 6 side has the similar constitution.SELECTED DRAWING: Figure 1
Inventors:
TSUCHIYA TAKESHI
KOTANI MASANAO
KAWAI RYOJI
CHIBA KOTARO
NISHIMURA HITOSHI
TAKANO MASAHIKO
HARASHIMA TOSHIKAZU
SADAKATA KOSUKE
KOTANI MASANAO
KAWAI RYOJI
CHIBA KOTARO
NISHIMURA HITOSHI
TAKANO MASAHIKO
HARASHIMA TOSHIKAZU
SADAKATA KOSUKE
Application Number:
JP2015243732A
Publication Date:
June 22, 2017
Filing Date:
December 15, 2015
Export Citation:
Assignee:
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD
International Classes:
F04C29/04; F04B39/00; F04B39/06; F04C18/16; F04C29/00; F04C29/02
Attorney, Agent or Firm:
Yuji Toda
Previous Patent: A formation method of a hollow cam shaft
Next Patent: A manufacturing method of a cylinder liner, and a cylinder liner
Next Patent: A manufacturing method of a cylinder liner, and a cylinder liner