EP 3209886 B1 20190904 - IMPELLER FOR A CENTRIFUGAL PUMP
Title (en)
IMPELLER FOR A CENTRIFUGAL PUMP
Title (de)
LAUFRAD FÜR KREISELPUMPE
Title (fr)
ROUE POUR POMPE CENTRIFUGE
Publication
Application
Priority
- EP 14190157 A 20141023
- EP 2015065355 W 20150706
Abstract (en)
[origin: WO2016062416A1] The present invention relates to an impeller and a centrifugal pump using such. The present invention especially relates to modifying an impeller of a centrifugal pump in such a way that said pump may be used without a risk of damaging a shaft seal or like at capacities higher than that at the optimal operating point. The impeller comprises at least a hub (52) extending radially outwardly in the form of a shroud (54), at least one working vane (56) arranged on the front surface of the hub (52) and the shroud (54), at least one rear vane (60) on the rear surface of the shroud (54), and at least one balancing conduit (58) extending through said hub (52) and shroud (54), the first opening (64) of the balancing conduit (58) in the first face of the impeller hub (52) being located within the circle C formed by the radially innermost part (56e) of the at least one working vane (56), while the impeller (50) is rotated about the axis (8).
IPC 8 full level
F04D 29/22 (2006.01)
CPC (source: EP RU US)
F04D 29/106 (2013.01 - US); F04D 29/2266 (2013.01 - EP US); F04D 29/24 (2013.01 - US); F04D 29/4293 (2013.01 - US); F04D 29/041 (2013.01 - RU); F04D 29/2266 (2013.01 - RU)
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 2016062416 A1 20160428; BR 112017006312 A2 20171219; BR 112017006312 B1 20220809; CN 107567545 A 20180109; CN 107567545 B 20190903; EP 3209886 A1 20170830; EP 3209886 B1 20190904; RU 2633211 C1 20171011; US 2017218970 A1 20170803
DOCDB simple family (application)
EP 2015065355 W 20150706; BR 112017006312 A 20150706; CN 201580053852 A 20150706; EP 15733774 A 20150706; RU 2017105505 A 20150706; US 201515500834 A 20150706