EP 3271588 B1 20210303 - AERODYNAMICALLY AND ACOUSTICALLY IMPROVED CAR FAN
Title (en)
AERODYNAMICALLY AND ACOUSTICALLY IMPROVED CAR FAN
Title (de)
AERODYNAMISCH UND AKUSTISCH VERBESSERTER FAHRZEUGLÜFTER
Title (fr)
VENTILATEUR POUR AUTOMOBILE AMÉLIORÉ AÉRODYNAMIQUEMENT ET ACOUSTIQUEMENT
Publication
Application
Priority
- FR 1552271 A 20150319
- EP 2016056139 W 20160321
Abstract (en)
[origin: WO2016146850A1] The invention relates to a ventilation impeller (1) comprising a hub (2) and blades (3) extending radially outwards from the hub (2) between a blade root (3a) and a blade head (3b), the blades of said impeller having a back-front curvature as a result of a curvature inversion over the span thereof, characterised in that said blades (3) comprise, between 20 and 80% of the span thereof, at least one variation of the pitch thereof of at least 2° extending over a maximum span distance of 25% more or less than a linear pitch over said span distance.
IPC 8 full level
F04D 29/38 (2006.01)
CPC (source: EP US)
F04D 29/326 (2013.01 - EP US); F04D 29/386 (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)
WO 2016146850 A1 20160922; EP 3271588 A1 20180124; EP 3271588 B1 20210303; FR 3033845 A1 20160923; FR 3033845 B1 20180427; US 10584716 B2 20200310; US 2018051712 A1 20180222
DOCDB simple family (application)
EP 2016056139 W 20160321; EP 16713789 A 20160321; FR 1552271 A 20150319; US 201615559634 A 20160321