EP 1669610 A1 20060614 - Axial fan
Title (en)
Axial fan
Title (de)
Axiallüfter
Title (fr)
Ventilateur axial
Publication
Application
Priority
EP 04106529 A 20041213
Abstract (en)
The present invention relates to a multiple sweep axial fan for producing axial gas flow in the direction of center of rotation. The term multiple sweep indicates a number of different sections along the leading edge and trailing edge of blades of the fan. The fan can be designed as a back skewed or front skewed low noise fan. Each blade of the fan has starting at its first end secured on the hub, a first section in which the leading edge of the blade is defined by a concave arc and at least one other section along which the leading edge is defined by a convex arc between the first section and the second end of said blade.
IPC 8 full level
F04D 29/38 (2006.01); F04D 29/32 (2006.01)
CPC (source: EP)
F04D 29/326 (2013.01); F04D 29/386 (2013.01)
Citation (search report)
- [XY] US 4737077 A 19880412 - VERA JEAN-CLAUDE [FR]
- [Y] EP 0947704 A2 19991006 - GATE SPA [IT]
- [Y] US 6368061 B1 20020409 - CAPDEVILA HUGO [DE]
- [X] US 5961289 A 19991005 - LOHMANN DIETER [DE]
- [X] US 2003012656 A1 20030116 - CHO KYUNG SEOK [KR], et al
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 MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 04106529 A 20041213