EP 2147210 A2 20100127 - BLADE FOR WIND TURBINES WITH A VERTICAL ROTATIONAL AXIS
Title (en)
BLADE FOR WIND TURBINES WITH A VERTICAL ROTATIONAL AXIS
Title (de)
FLÜGEL FÜR WINDTURBINEN MIT VERTIKALER DREHACHSE
Title (fr)
PALE POUR TURBINES ÉOLIENNES PRÉSENTANT UN AXE DE ROTATION VERTICAL
Publication
Application
Priority
- EP 2008004062 W 20080521
- IT BZ20070022 A 20070524
Abstract (en)
[origin: WO2008141813A2] The invention relates to a blade for wind turbines with a vertical rotational axis, said blade being supported by a single arm (2), which projects radially from a hub (1) that is mounted to rotate (R) around the vertical axis (A). Said blade has a substantially elliptical linear (3) or hastate (30) contour that is symmetrical about a horizontal axis (H), the cross-section having a substantially elliptical form in relation to the vertical cross-section, which contains the vertex of the dorsal and ventral surfaces of the blade (3, 30), said form being defined by the curved profile (3i, 3e, 13e; 30i, 30e, 130e) of said surfaces. The vertexes of said curves dip in the region of greatest width (chord) of the blade (3, 30), forming the region, to which the single supporting arm (2) can be attached or fixed (3f, 30f).
IPC 8 full level
F03D 3/06 (2006.01)
CPC (source: EP)
F03D 3/061 (2013.01); F03D 3/062 (2013.01); F05B 2240/301 (2013.01); F05B 2250/14 (2013.01); F05B 2250/70 (2013.01); Y02E 10/74 (2013.01)
Citation (search report)
See references of WO 2008141813A2
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 MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
WO 2008141813 A2 20081127; WO 2008141813 A3 20090430; EP 2147210 A2 20100127; IT BZ20070022 A1 20081125
DOCDB simple family (application)
EP 2008004062 W 20080521; EP 08758668 A 20080521; IT BZ20070022 A 20070524