EP 1845268 A1 20071017 - Axial fan
Title (en)
Axial fan
Title (de)
Axiallüfter
Title (fr)
Ventilateur axial
Publication
Application
Priority
- EP 06075861 A 20060411
- EP 07075273 A 20070411
Abstract (en)
The invention relates to an axial fan (50) comprising a boss (51) and a number of blades (52) evenly distributed and arranged to the boss (51), wherein the blades (52) have an aerofoil profile, each blade (52) is arranged to the boss (51) with a strip (53), wherein each blade is hollow and the strip (53) is at least partially inserted into the blade, and that at least one fastener (58) runs from the surface of the blade (52) through a corresponding opening (56) in the strip to the opposite surface of the blade, wherein the corresponding opening (56) in the strip (53) is a slot, such that the pitch of the blade is adjustable, by rotation of the blade (52) relative to the strip (53) along the axial axis of the blade.
IPC 8 full level
F04D 29/34 (2006.01); F04D 29/36 (2006.01)
CPC (source: EP)
F04D 29/34 (2013.01); F04D 29/36 (2013.01)
Citation (search report)
- [A] US 4366387 A 19821228 - CARTER JR J WARNE, et al
- [A] WO 9409277 A1 19940428 - CEUTE SA [CH], et al
- [A] GB 1165738 A 19691001 - COOLING DEV LTD
- [A] US 5873701 A 19990223 - SHIU SUN-QUEN [TW]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK YU
DOCDB simple family (publication)
DOCDB simple family (application)
EP 07075273 A 20070411