Title:
SCREW COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2020/053976
Kind Code:
A1
Abstract:
This compressor is provided with a plurality of screw rotors 2, 3. Among the plurality of screw rotors 2, 3, the first screw rotor 2 has a first tooth section body 24 in which a tooth 21a is formed in a helical shape, and a partition section 25 that is provided at a discharge side end in the axial direction of the first tooth section body 24 and that extends radially as far as a position that is equal to or lower than the tooth tip diameter and greater than the tooth root diameter of the first tooth section body 24. Among the plurality of screw rotors 2, 3, the second screw rotor 3 has a second tooth section body 31 in which a tooth 31a is formed in a helical shape corresponding to the first tooth section body 24.
Inventors:
KASAHARA MASAYUKI (JP)
HORIUCHI HIROSHI (JP)
ISHIZUKA YUKI (JP)
HORIUCHI HIROSHI (JP)
ISHIZUKA YUKI (JP)
Application Number:
PCT/JP2018/033706
Publication Date:
March 19, 2020
Filing Date:
September 11, 2018
Export Citation:
Assignee:
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD (JP)
International Classes:
F04C18/16
Foreign References:
| JPH0565887A | 1993-03-19 | |||
| JPS54154811A | 1979-12-06 | |||
| US20030077197A1 | 2003-04-24 | |||
| CN106762667A | 2017-05-31 | |||
| JP2016017511A | 2016-02-01 |
Attorney, Agent or Firm:
KAICHI IP (JP)
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