Title:
OIL-COOLING TWO-STAGE SCREW COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2019/039267
Kind Code:
A1
Abstract:
A compressor 1 is provided with a first rotor set 13, a second rotor set 23, a connection portion 40 that mechanically connects a first male rotor 14 and a second female rotor 25, and a rotor casing 30. The rotor casing 30 has an intermediate wall 31 that demarcates a first compression chamber 12 and a second compression chamber 22. The connection portion 40 has a connection shaft 24b formed at a second male rotor 24, a connection hole 14c which is formed at the first male rotor 14 and into which the connection shaft 24b is coaxially fitted, and a rotation prevention structure 41 that prevents relative rotations of the connection shaft 24b and the connection hole 14c. The intermediate wall 31 has a through hole 32 for inserting the connection shaft 24b thereinto, a first recess 33 for mounting a bearing 17 from the first compression chamber 12 side, and a second recess 34 for mounting a bearing 28 from the second compression chamber 22 side.
Inventors:
TSUBOI NOBORU
KAKIUCHI TETSUYA
KAKIUCHI TETSUYA
Application Number:
PCT/JP2018/029631
Publication Date:
February 28, 2019
Filing Date:
August 07, 2018
Export Citation:
Assignee:
KOBE STEEL LTD (JP)
International Classes:
F04C23/00; F04C18/16; F04C29/00
Foreign References:
| JPS5481110U | 1979-06-08 | |||
| JP2017137845A | 2017-08-10 | |||
| JP2015083776A | 2015-04-30 | |||
| JPS6165085A | 1986-04-03 |
Attorney, Agent or Firm:
YAMAO, Norihito et al. (JP)
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