EP 2582983 A1 20130424 - DUAL-FLOW CENTRIFUGAL PUMP
Title (en)
DUAL-FLOW CENTRIFUGAL PUMP
Title (de)
DOPPELFLUTIGE KREISELPUMPE
Title (fr)
POMPE CENTRIFUGE DOUBLE FLUX
Publication
Application
Priority
- DE 102010023931 A 20100616
- EP 2011057396 W 20110509
Abstract (en)
[origin: WO2011157485A1] The invention relates to a double-flow centrifugal pump, in particular a cooling water pump for a marine diesel engine or ballast water delivery pump, having a pump housing (2) and having a double-flow impeller (7) rotationally fixedly arranged on a rotationally driven shaft (3), wherein using said impeller a fluid can be suctioned from two axial sides from a negative pressure area (10) and can be delivered in the radial direction into a positive pressure area (11), wherein the negative pressure area (10) is sealed off with respect to the positive pressure area (11) by means of at least two sealing gaps (19, 20) which are spaced apart axially from each other and which are formed between the impeller (7) and at least one stationary pump component (23), in particular the pump housing (2) and/or an insert part (24). According to the invention, the sealing gaps (19, 20) are formed as axial gaps arranged axially between the impeller (7) and the pump component (23) and extending in the circumferential direction and in the radial direction, wherein the gap width (s) of said axial gaps is less than the radial spacing (a) of the impeller (7) from all the components arranged with a radial spacing from the impeller (7).
IPC 8 full level
F04D 1/00 (2006.01); F04D 29/16 (2006.01)
CPC (source: EP KR US)
F04D 1/00 (2013.01 - KR US); F04D 1/006 (2013.01 - EP KR US); F04D 29/086 (2013.01 - KR); F04D 29/167 (2013.01 - EP KR US); F04D 29/406 (2013.01 - KR); F05D 2210/11 (2013.01 - KR); Y10S 415/00 (2013.01 - KR); Y10S 417/00 (2013.01 - KR)
Citation (search report)
See references of WO 2011157485A1
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)
DE 102010023931 A1 20111222; CN 103080556 A 20130501; CN 103080556 B 20160713; DK 2582983 T3 20160502; EP 2582983 A1 20130424; EP 2582983 B1 20160330; ES 2569878 T3 20160512; JP 2013532252 A 20130815; JP 5857042 B2 20160210; KR 101737665 B1 20170518; KR 20130131213 A 20131203; US 2013156545 A1 20130620; WO 2011157485 A1 20111222
DOCDB simple family (application)
DE 102010023931 A 20100616; CN 201180029263 A 20110509; DK 11723310 T 20110509; EP 11723310 A 20110509; EP 2011057396 W 20110509; ES 11723310 T 20110509; JP 2013514609 A 20110509; KR 20127032692 A 20110509; US 201113704080 A 20110509