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Title:
SCREW COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2020/084916
Kind Code:
A1
Abstract:
This screw compressor is provided with: a plurality of screw rotors; a plurality of suction-side bearings for respectively rotatably supporting the suction sides of the plurality of screw rotors; a plurality of discharge-side bearings for respectively rotatably supporting the discharge sides of the plurality of screw rotors; and a casing for housing the plurality of screw rotors, the plurality of suction-side bearings, and the plurality of discharge-side bearings. Each of the screw rotors has: a tooth section in which a plurality of teeth are formed; and a suction-side shaft and a discharge-side shaft which are respectively provided at both ends of the tooth section. The casing has: a housing compartment for housing the tooth sections of the plurality of screw rotors; and lubrication passages through which liquid for lubricating the plurality of suction-side bearings flows. The lubrication passages are formed so that: each passage for lubricating one of the plurality of suction-side bearings is serially connected; and the downstream ends of the lubrication passages are connected to the housing compartment.

Inventors:
CHIBA KOTARO (JP)
TAKANO MASAHIKO (JP)
YORIKANE SHIGEYUKI (JP)
MORITA KENJI (JP)
Application Number:
PCT/JP2019/034776
Publication Date:
April 30, 2020
Filing Date:
September 04, 2019
Export Citation:
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Assignee:
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD (JP)
International Classes:
F04C29/02; F04C18/16
Domestic Patent References:
WO2016129083A12016-08-18
Foreign References:
JPS59215985A1984-12-05
JP2014194186A2014-10-09
JP2014214740A2014-11-17
JPH074370A1995-01-10
JP2846065B21999-01-13
Attorney, Agent or Firm:
KAICHI IP (JP)
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