EP 2646693 B1 20160113 - COOLANT PUMP
Title (en)
COOLANT PUMP
Title (de)
KÜHLMITTELPUMPE
Title (fr)
POMPE DE REFROIDISSEMENT
Publication
Application
Priority
- DE 102010053510 A 20101204
- DE 2011002061 W 20111201
Abstract (en)
[origin: WO2012072068A1] The invention relates to an axial flow-type coolant pump that is mechanically driven by a pulley, a gear, a plug-in shaft, or the like for internal combustion engines. The aim of the invention is to develop an axial-flow coolant pump for internal combustion engines, wherein the pump allows a clear increase of the pump pressure in axial-flow coolant pumps with a smaller installation space/installation volume in comparison to the prior art and at the same pump shaft rotational speed, that is, the rotational speed that is conventional for coolant pumps; the pump is simultaneously characterized by a stable characteristic curve of the coolant capacity above the pump pressure at a constant rotational speed, said characteristic curve being clearly improved in comparison to the prior art; the pump is additionally resistant to cavitation, prevents swirling of the delivery capacity, and simultaneously ensures a very high degree of efficiency. The pump is further characterized by a very compact, inexpensive, and robust design that is simple to produce and assemble, and the pump also ensures a high operating reliability and dependability with a very long service life even in the event of a coolant having a contamination load. The coolant pump according to the invention is characterized in that a semi-axial impeller, a Francis impeller, or a diagonal impeller with vanes (15) which are three-dimensionally curved is used as the rotor (14). The guide wheel (9) that lies in the pump housing (2) has an inner guide cone (16) that is tapered in the flow direction and an outer conical guide cap (17) that is spaced from said cone, and the guide cone and the guide cap are connected to each other in a symmetrically spaced manner by three-dimensionally curved guide vanes (10), said rotor (14) being spaced from the guide wheel (9) by an annular gap (13) such that the rotor (14) is both laterally spaced from the adjacent outer edge of the guide cone (16) as well as laterally spaced from the adjacent outer edge of the guide cap (17).
IPC 8 full level
F04D 1/04 (2006.01); F04D 13/02 (2006.01); F04D 29/12 (2006.01); F04D 29/44 (2006.01)
CPC (source: EP US)
F04D 1/04 (2013.01 - EP US); F04D 13/02 (2013.01 - US); F04D 13/021 (2013.01 - EP US); F04D 29/126 (2013.01 - EP US); F04D 29/448 (2013.01 - EP US)
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 102010053510 A1 20120606; DE 102010053510 B4 20140123; BR 112013013637 A2 20191231; BR 112013013637 B1 20201229; CN 103299081 A 20130911; CN 103299081 B 20160427; EP 2646693 A1 20131009; EP 2646693 B1 20160113; JP 2013545021 A 20131219; JP 5917549 B2 20160518; US 2013272848 A1 20131017; WO 2012072068 A1 20120607; WO 2012072068 A4 20120809; WO 2012072068 A9 20121213
DOCDB simple family (application)
DE 102010053510 A 20101204; BR 112013013637 A 20111201; CN 201180058462 A 20111201; DE 2011002061 W 20111201; EP 11811520 A 20111201; JP 2013541207 A 20111201; US 201113991217 A 20111201