Title:
SCREW COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2013/175817
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a screw compressor capable of supplying lubrication fluid in an amount suitable to both an operating chamber for compressing gas and a bearing chamber to which a bearing is attached. A screw compressor (1) is provided with: a compressor main body (10) in which are formed an operating chamber in which a pair of male and female rotors rotate and a bearing chamber provided with a bearing for supporting the rotors; an operating chamber oil-supply pipe (20c) for supplying lubrication oil to the operating chamber; a bearing chamber oil-supply pipe (20d) for supplying lubrication oil to the bearing chamber; an oil cooler (3) for cooling the lubrication oil discharged from the operating chamber; a bypass pipeline for bypassing the oil cooler (3); and a three-way valve (21) for opening and closing the bypass pipeline. The operating-chamber oil supply pipe (20c) supplies the lubrication oil cooled by the oil cooler (3) to the operating chamber, the bearing chamber oil supply pipe (20d) branches from the operating-chamber oil supply pipe (20c) to supply lubrication oil cooled by the oil cooler (3) to the bearing chamber, and a flow-adjustment means (22) is provided to the bearing chamber oil supply pipe (20d) to regulate the flow of lubrication oil.
Inventors:
CHIBA KOHTARO (JP)
KAMIYA YUJI (JP)
KAMIYA YUJI (JP)
Application Number:
PCT/JP2013/054192
Publication Date:
November 28, 2013
Filing Date:
February 20, 2013
Export Citation:
Assignee:
HITACHI IND EQUIPMENT SYS (JP)
International Classes:
F04C18/16; F04C29/02
Foreign References:
| JP2002332980A | 2002-11-22 | |||
| JPS63130686U | 1988-08-26 |
Attorney, Agent or Firm:
ISONO Michizo (JP)
Michizo Isono (JP)
Michizo Isono (JP)
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