EP 2342462 A2 20110713 - METHOD FOR OPERATING AN OIL-TIGHT VACUUM PUMP AND OIL-TIGHT VACUUM PUMP
Title (en)
METHOD FOR OPERATING AN OIL-TIGHT VACUUM PUMP AND OIL-TIGHT VACUUM PUMP
Title (de)
VERFAHREN ZUM BETREIBEN EINER ÖLGEDICHTETEN VAKUUMPUMPE SOWIE ÖLGEDICHTETE VAKUUMPUMPE
Title (fr)
PROCEDE DE FONCTIONNEMENT D'UNE POMPE A VIDE A JOINT D'HUILE ET POMPE A VIDE A JOINT D'HUILE
Publication
Application
Priority
- EP 2009062161 W 20090921
- DE 102008057548 A 20081108
Abstract (en)
[origin: WO2010052060A2] In a method for operating an oil-tight vacuum pump, the total suction pressure present in a suction channel (22) of the vacuum pump is measured in a first step. In order to minimize the danger of a backflow of oil vapor into a vacuum region connected to the suction channel, the rotational speed of the vacuum pump is controlled as a function of the measured total suction pressure within a predetermined pressure range. The invention further relates to an oil-tight vacuum pump, wherein the suction channel (22) of the vacuum pump connected to the pump chamber is designed in a curved manner directly in front of an inlet (36) opening.
IPC 8 full level
F04C 23/00 (2006.01); F04C 25/02 (2006.01); F04C 28/08 (2006.01)
CPC (source: EP)
F04C 23/001 (2013.01); F04C 23/005 (2013.01); F04C 25/02 (2013.01); F04C 28/08 (2013.01); F04C 28/28 (2013.01)
Citation (search report)
See references of WO 2010052060A2
Citation (examination)
GB 747344 A 19560404 - EDWARDS & CO LONDON LTD W
Designated contracting state (EPC)
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 SE SI SK SM TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
DE 102008057548 A1 20100512; EP 2342462 A2 20110713; WO 2010052060 A2 20100514; WO 2010052060 A3 20100729
DOCDB simple family (application)
DE 102008057548 A 20081108; EP 09783213 A 20090921; EP 2009062161 W 20090921