EP 3916239 B1 20240313 - FAN WHEEL WITH THREE-DIMENSIONALLY CURVED IMPELLER BLADES
Title (en)
FAN WHEEL WITH THREE-DIMENSIONALLY CURVED IMPELLER BLADES
Title (de)
GEBLÄSERAD MIT DREIDIMENSIONAL GEKRÜMMTEN LAUFRADSCHAUFELN
Title (fr)
ROUE DE SOUFFLERIE POURVU DE PALES DE ROTOR COURBÉES TRIDIMENSIONNELLES
Publication
Application
Priority
DE 102020114387 A 20200528
Abstract (en)
[origin: US2021372424A1] A fan wheel (1) has a bottom disc (4), a cover disc (3) and impeller blades (2) arranged around a rotation axis (RA) of the fan wheel (1). The blades, in each case, extend over a blade length from a blade leading edge (5) to a blade trailing edge (6). The impeller blades (2) are divided into a front section (10), rear section (12) and transition section (11). The front section (10), extends proceeding from the blade leading edge (5) in the direction of the blade trailing edge (6). The rear section (12) extends proceeding from the blade trailing edge (6), in the direction of the blade leading edge (5). The transition section (11) forms a transition between the front section (10) and the rear section (12). The impeller blades (2) are formed with opposite curvature in the course from the bottom disc (4) to the cover disc (3) in the front section (10) and the rear section (12).
IPC 8 full level
F04D 29/28 (2006.01); F04D 29/30 (2006.01)
CPC (source: CN EP US)
F04D 29/281 (2013.01 - CN EP US); F04D 29/30 (2013.01 - CN EP); F05D 2250/71 (2013.01 - EP)
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)
EP 3916239 A1 20211201; EP 3916239 B1 20240313; CN 113738697 A 20211203; DE 102020114387 A1 20211202; US 11506220 B2 20221122; US 2021372424 A1 20211202
DOCDB simple family (application)
EP 21172988 A 20210510; CN 202110572741 A 20210525; DE 102020114387 A 20200528; US 202117332345 A 20210527