EP 2534339 A2 20121219 - LUBRICATION OF SCREW MACHINES
Title (en)
LUBRICATION OF SCREW MACHINES
Title (de)
SCHMIERUNG VON SCHRAUBMASCHINEN
Title (fr)
LUBRIFICATION DE MACHINES À VIS
Publication
Application
Priority
- GB 201002411 A 20100212
- GB 2011050275 W 20110214
Abstract (en)
[origin: GB2477777A] A screw machine and method for use with a working fluid with a liquid phase present comprises rotors 10, 16 having meshed, lubricated helical formations. The rotors have an 'N' profile as disclosed in WO 97/43550. In use, lubrication of the helical formations of the rotors 10, 16 and optionally of the rotor bearings 28 is achieved substantially exclusively with the liquid phase of the working fluid. The helical formations may be coated with a low friction coating which may comprise a carbide phase and a carbon phase. The bearings may take the form of hydrodynamic bearings or rolling-element bearings. The working fluid may be wet steam, with the liquid phase being water. The screw machine may be a screw expander.
IPC 8 full level
F01C 1/16 (2006.01)
CPC (source: EP GB US)
F01C 1/16 (2013.01 - EP US); F01C 17/00 (2013.01 - EP US); F01C 21/04 (2013.01 - GB); F01C 21/045 (2013.01 - EP US); F01K 25/005 (2013.01 - GB); F01K 25/04 (2013.01 - GB); F04C 2/08 (2013.01 - GB); F04C 15/0088 (2013.01 - GB); F04C 29/04 (2013.01 - US); F16N 7/36 (2013.01 - GB); F16N 15/04 (2013.01 - EP GB US); F01C 1/084 (2013.01 - EP US); F04C 2210/242 (2013.01 - EP US); F04C 2230/91 (2013.01 - EP US); F04C 2240/52 (2013.01 - EP US); F04C 2240/54 (2013.01 - EP US); F05C 2251/14 (2013.01 - EP US); F16C 17/02 (2013.01 - EP US); F16C 17/14 (2013.01 - EP US)
Citation (examination)
JP 2009250170 A 20091029 - KOBE STEEL LTD
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
GB 201002411 D0 20100331; GB 2477777 A 20110817; GB 2477777 B 20120523; CN 102834618 A 20121219; CN 102834618 B 20160810; EP 2534339 A2 20121219; JP 2013519820 A 20130530; JP 5964245 B2 20160803; KR 20120140659 A 20121231; US 2013052072 A1 20130228; WO 2011098835 A2 20110818; WO 2011098835 A3 20120927
DOCDB simple family (application)
GB 201002411 A 20100212; CN 201180018654 A 20110214; EP 11709168 A 20110214; GB 2011050275 W 20110214; JP 2012552480 A 20110214; KR 20127023865 A 20110214; US 201113578348 A 20110214