Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
OIL-FREE SCREW COMPRESSOR
Document Type and Number:
Japanese Patent JP2011149381
Kind Code:
A
Abstract:

To simplify a compressor and a structure of its drive system device.

The oil-free screw compressor is composed of compressor bodies 1, 2 compressing gas, a motor 10 driving rotors of the compressor bodies via accelerating gears 2a, 2b, 9, a gear casing 3 housing the accelerating gears, and cooling system devices 31, 41 cooling discharge air, or the like. An oil pump 52 is driven by an oil pump gear shaft 71 attached to a bull gear 9. A shaft seal 74 is attached to a shaft seal cover 73, and it seals lubricating oil in a gear case 3 with a bush 72. The bush 72 is positioned in an axial direction of the bull gear 9.


Inventors:
Kawabata, Natsuki
Okaya, Masakatsu
Application Number:
JP2010000012744
Publication Date:
August 04, 2011
Filing Date:
January 25, 2010
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO LTD
International Classes:
F04C18/16; F04C27/00; F04C29/00; F04C29/02
Domestic Patent References:
JPH10148192A
JPH05164076A
JP2000097186A
JP2002322673A
JP2002155879A
JPH0244146U
JPH10148192A
JPH05164076A
JP2000097186A
JP2002322673A
Attorney, Agent or Firm:
井上 学
戸田 裕二



 
Previous Patent: MULTIBLADE BLOWER

Next Patent: WATER CIRCULATION TYPE COMPRESSOR