Title:
MULTI-STAGE SCREW COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2022/202163
Kind Code:
A1
Abstract:
This multi-stage screw compressor comprises a multi-stage compressor body that compresses gas in order, and each stage of the multi-stage compressor body has both male and female rotors rotatably housed in a casing in a state of mesh with each other. Both male and female rotors include a rotor teeth portion having an intake-side end face and a discharge-side end face at one end and the other end in the axial direction, respectively, and having twisted teeth extending from the intake-side end face to the discharge-side end face. Both male and female rotors in a post-stage compressor body of at least one certain stage, excluding a front-stage compressor body of the first stage of the multi-stage compressor body, are configured such that the lead increases from the intake side toward the discharge side in the axial direction of the rotor teeth portion.
Inventors:
TSUCHIYA TAKESHI (JP)
CHIBA KOTARO (JP)
YABE TOSHIAKI (JP)
YORIKANE SHIGEYUKI (JP)
CHIBA KOTARO (JP)
YABE TOSHIAKI (JP)
YORIKANE SHIGEYUKI (JP)
Application Number:
PCT/JP2022/008872
Publication Date:
September 29, 2022
Filing Date:
March 02, 2022
Export Citation:
Assignee:
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD (JP)
International Classes:
F04C18/16; F04C23/00; F04C29/00
Domestic Patent References:
| WO2021070548A1 | 2021-04-15 |
Foreign References:
| JP2020139487A | 2020-09-03 | |||
| JP2004144035A | 2004-05-20 | |||
| JPS52142217U | 1977-10-28 | |||
| JP2004144035A | 2004-05-20 |
Attorney, Agent or Firm:
KAICHI IP (JP)
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