Invention Grant
- Patent Title: Oil-free screw compressor coated with a base resin, a solid lubricant and a heat-resistant additive
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Application No.: US14325083Application Date: 2014-07-07
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Publication No.: US09944880B2Publication Date: 2018-04-17
- Inventor: Yukiko Ikeda , Kazuaki Shiinoki , Masakatsu Okaya , Natsuki Kawabata , Masahiro Kawamura , Iwao Aoki
- Applicant: Hitachi Industrial Equipment Systems, Co., Ltd. , Kawamura Research Laboratories, Inc.
- Applicant Address: JP Tokyo JP Tokyo
- Assignee: HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD.,KAWAMURA RESEARCH LABORATORIES, INC.
- Current Assignee: HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD.,KAWAMURA RESEARCH LABORATORIES, INC.
- Current Assignee Address: JP Tokyo JP Tokyo
- Agency: Baker Botts L.L.P.
- Priority: JP2010-239741 20101026
- Main IPC: F01C21/00
- IPC: F01C21/00 ; F03C2/00 ; F03C4/00 ; F04C2/00 ; F04C15/00 ; C10M169/04 ; F04C18/08 ; F04C18/16 ; F01C1/14
Abstract:
In order to prevent deterioration in performance of an oil-free screw compressor and scuffing caused by rust, surfaces of both male and female rotors are coated with heat-resistance coatings containing a solid lubricant. A coating contains Polyimide resin to which Molybdenum disulfide, as a solid lubricant, and Aluminum oxide and Titanium oxide, as additives, are added. Accordingly, it is possible to realize a coating that is higher in heat resistance and longer in lifetime than a conventional one.
Public/Granted literature
- US20140322058A1 SCREW COMPRESSOR Public/Granted day:2014-10-30
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