EP 2753811 A4 20150603 - FUEL SYSTEM USING DUAL PRESSURE HI-SPEED CENTRIFUGAL PUMP ARRANGEMENT
Title (en)
FUEL SYSTEM USING DUAL PRESSURE HI-SPEED CENTRIFUGAL PUMP ARRANGEMENT
Title (de)
BRENNSTOFFSYSTEM MIT DOPPELDRUCK-HOCHGESCHWINDIGKEITSZENTRIFUGALPUMPENANORDNUNG
Title (fr)
SYSTÈME DE CARBURANT UTILISANT UN ENSEMBLE POMPE CENTRIFUGE À DOUBLE PRESSION À HAUTE VITESSE
Publication
Application
Priority
- US 201161523576 P 20110815
- US 201161523569 P 20110815
- US 2012050972 W 20120815
Abstract (en)
[origin: WO2013025818A1] An improved system for providing fuel uses a centrifugal pump arrangement that provides dual pressure. The dual pressure pump assembly includes a centrifugal pump for supplying pressurized fluid to an associated downstream use, and an auxiliary pump stage for selectively boosting pressure of delivered flow. The auxiliary pump stage in one preferred arrangement includes a start and turbo-pump stage where inlet fuel from an associated airframe is fed to a centrifugal pump portion of the turbo-pump that outlets to an inlet of the centrifugal pump. The auxiliary pump stage in another arrangement includes a recirculation passage communicating with the outlet of the high-speed centrifugal pump and the turbine, and the outlets from the start and turbo-pump stage feed an inlet of the high speed centrifugal pump, and a flow valve is disposed in the recirculation passage. In still another arrangement, the auxiliary pump stage includes an electric motor for start-up.
IPC 8 full level
F02C 9/26 (2006.01); F02C 7/22 (2006.01); F04B 23/04 (2006.01); F04D 13/04 (2006.01); F04D 13/12 (2006.01)
CPC (source: EP US)
F02C 7/236 (2013.01 - EP US); F04B 41/06 (2013.01 - US); F04D 13/04 (2013.01 - EP US); F04D 13/12 (2013.01 - EP US); F05D 2260/606 (2013.01 - EP US); F05D 2260/85 (2013.01 - EP US); Y02T 50/60 (2013.01 - EP US)
Citation (search report)
- [XI] GB 735874 A 19550831 - ROLLS ROYCE
- [XA] WO 8905904 A1 19890629 - SUNDSTRAND CORP [US]
- [I] US 4339917 A 19820720 - LAGRONE CHARLES H
- [A] GB 2451575 A 20090204 - HISPANO SUIZA SA [FR]
- See references of WO 2013025818A1
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)
WO 2013025818 A1 20130221; WO 2013025818 A9 20140530; CN 103958856 A 20140730; CN 103958856 B 20161012; EP 2753811 A1 20140716; EP 2753811 A4 20150603; US 2014219826 A1 20140807
DOCDB simple family (application)
US 2012050972 W 20120815; CN 201280040181 A 20120815; EP 12823474 A 20120815; US 201214238808 A 20120815