EP 2532895 B1 20140226 - Vacuum pump with pump rotor bearings on a single side
Title (en)
Vacuum pump with pump rotor bearings on a single side
Title (de)
Vakuumpumpe mit einseitiger Lagerung der Pumpenrotoren
Title (fr)
Pompe à vide avec des paliers disposés à un côté
Publication
Application
Priority
EP 11004566 A 20110606
Abstract (en)
[origin: EP2532895A1] The pump i.e. screw pump (1), has a motor stator (12) with windings surrounding two magnetized cylinders (11, 11') and producing magnetic fields such that the cylinders and rotor shafts (6, 6') rotate synchronously along opposite directions. A bearing (13) i.e. fixed bearing, of the shafts is provided on a drive part (3). The bearing is not provided on a side of a suction chamber (7'') remote from the drive part. A pressure side of a screw pump assembly (2) rests on the side of the chamber turned toward the drive part. The bearing and the drive part stay under atmospheric pressure.
IPC 8 full level
F04C 18/16 (2006.01); F01C 17/00 (2006.01); F01C 21/02 (2006.01); F01C 21/10 (2006.01); F04C 23/02 (2006.01); F04C 25/02 (2006.01); F04C 27/02 (2006.01); F04C 29/00 (2006.01); F04C 29/04 (2006.01); H02K 9/02 (2006.01); H02K 15/03 (2006.01); H02K 21/14 (2006.01)
CPC (source: EP)
F01C 17/00 (2013.01); F01C 21/02 (2013.01); F01C 21/10 (2013.01); F04C 18/16 (2013.01); F04C 23/02 (2013.01); F04C 25/02 (2013.01); F04C 27/02 (2013.01); F04C 29/0078 (2013.01); F04C 29/0092 (2013.01); F04C 29/042 (2013.01); F04C 29/045 (2013.01); F04C 2230/20 (2013.01); F04C 2230/23 (2013.01); F04C 2230/24 (2013.01); F04C 2230/60 (2013.01); F04C 2230/601 (2013.01); F04C 2240/20 (2013.01); F04C 2240/40 (2013.01); F04C 2240/402 (2013.01); F04C 2240/51 (2013.01); F04C 2240/52 (2013.01); F04C 2240/60 (2013.01); F05C 2201/021 (2013.01)
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)
EP 2532895 A1 20121212; EP 2532895 B1 20140226; EP 2642127 A1 20130925; EP 2642127 B1 20190109
DOCDB simple family (application)
EP 11004566 A 20110606; EP 13002962 A 20110606