EP 1625304 A1 20060215 - MULTISTAGE CENTRIFUGAL PUMP
Title (en)
MULTISTAGE CENTRIFUGAL PUMP
Title (de)
MEHRSTUFIGE KREISELPUMPE
Title (fr)
POMPE CENTRIFUGE MULTI-ETAGEE
Publication
Application
Priority
- EP 2004004873 W 20040507
- DE 10322382 A 20030517
Abstract (en)
[origin: US2006127232A1] A multistage centrifugal pump in which each stage includes a one-piece or multi-piece housing and an impeller disposed therein. The pump stages are arranged between an inlet end member and an outlet end member and retained therebetween by connectors so as to be connected to a flow-guiding system. All impellers are positioned on a single pump shaft that is supported by at least two pump bearings. One end of the pump shaft is provided with a device for receiving a connector of a drive unit, and outer support members are disposed at mounting points adjacent the end members in order to mount the centrifugal pump in its installation location. The pump shaft ( 3 ) is supported by two two pump bearings ( 11, 12 ), with the maximum distance (L<SUB>L</SUB>) between confronting sides of the two pump bearings ( 11, 12 ) being less than or equal to a minimum structural stage height (L<SUB>M</SUB>) multiplied by the number of pump stages ( 2.1 - 2.5 ) minus 1.
IPC 1-7
IPC 8 full level
F04D 1/06 (2006.01); F04D 29/04 (2006.01); F04D 29/043 (2006.01); F04D 29/047 (2006.01)
CPC (source: EP US)
F04D 1/063 (2013.01 - EP US); F04D 29/043 (2013.01 - EP US); F04D 29/047 (2013.01 - EP US)
Citation (search report)
See references of WO 2004109117A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
US 2006127232 A1 20060615; US 7377744 B2 20080527; AT E339616 T1 20061015; DE 10322382 A1 20041202; DE 502004001498 D1 20061026; DK 1625304 T3 20070129; EP 1625304 A1 20060215; EP 1625304 B1 20060913; ES 2271885 T3 20070416; JP 2006528306 A 20061214; JP 4928265 B2 20120509; WO 2004109117 A1 20041216
DOCDB simple family (application)
US 28031705 A 20051117; AT 04731592 T 20040507; DE 10322382 A 20030517; DE 502004001498 T 20040507; DK 04731592 T 20040507; EP 04731592 A 20040507; EP 2004004873 W 20040507; ES 04731592 T 20040507; JP 2006529756 A 20040507