EP 2376789 A1 20111019 - PUMP HAVING AN AXIAL BALANCING DEVICE
Title (en)
PUMP HAVING AN AXIAL BALANCING DEVICE
Title (de)
PUMPE MIT ACHSENAUSGLEICHSVORRICHTUNG
Title (fr)
POMPE A DISPOSITIF D'EQUILIBRAGE AXIAL.
Publication
Application
Priority
- FR 2010050027 W 20100108
- FR 0950107 A 20090109
Abstract (en)
[origin: WO2010079309A1] The pump of the invention includes a stator (112) and a rotor comprising an impeller through which a fluid stream (114) passes. An axial balancing device provided on said impeller (111) comprises a rear balancing chamber (118) and a passage (120) which are provided between the impeller (111) and the stator (112), thus enabling the discharge of fluid from the fluid stream (114) to the balancing chamber (118). Fluid pressure in the balancing chamber (118) compensates for the pressures exerted by the fluid onto the rest of the rotor (111), thus enabling the axial balance of the rotor. The passage (120) comprises an upstream nozzle (140), a downstream nozzle (160), and an intermediate annular chamber (150) which are provided between the walls (151, 152; 141, 142; 161, 162) of the impeller (111) and the stator (112), the intermediate chamber being provided downstream from the upstream nozzle (140) and upstream from the downstream nozzle (160).
IPC 8 full level
F04D 29/22 (2006.01); F04D 29/042 (2006.01)
CPC (source: EP US)
F04D 29/0416 (2013.01 - EP); F04D 29/042 (2013.01 - EP US); F04D 29/2266 (2013.01 - EP US)
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
DOCDB simple family (publication)
WO 2010079309 A1 20100715; CN 102272457 A 20111207; CN 102272457 B 20150610; EP 2376789 A1 20111019; EP 2376789 B1 20180912; FR 2941019 A1 20100716; JP 2012514713 A 20120628; JP 5492222 B2 20140514; RU 2011130704 A 20130220; RU 2539954 C2 20150127; US 2012148384 A1 20120614; US 9109606 B2 20150818
DOCDB simple family (application)
FR 2010050027 W 20100108; CN 201080004084 A 20100108; EP 10706014 A 20100108; FR 0950107 A 20090109; JP 2011544909 A 20100108; RU 2011130704 A 20100108; US 201013143616 A 20100108