(19)
(11) EP 2 466 072 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
21.12.2016 Bulletin 2016/51

(43) Date of publication A2:
20.06.2012 Bulletin 2012/25

(21) Application number: 11075270.6

(22) Date of filing: 14.12.2011
(51) International Patent Classification (IPC): 
F01D 5/26(2006.01)
F04D 29/66(2006.01)
F01D 5/16(2006.01)
F04D 29/32(2006.01)
 F03D 11/00(0000.00)
F04D 19/00(2006.01)
F04D 29/38(2006.01)
(84) Designated Contracting States:
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
Designated Extension States:
BA ME

(30) Priority: 16.12.2010 GB 201021349

(71) Applicant: Howden Axial Fans AB
351 87 Växjö (SE)

(72) Inventors:
  • Revillot, Dominique
    71240 Saint Loup de Varennes (FR)
  • Godichon, Alain
    71100 Saint-Remy (FR)
  • Sheard, Geoff
    Colchester, CO4 5ZD (GB)

(74) Representative: JENSEN & SON 
366-368 Old Street
London EC1V 9LT
London EC1V 9LT (GB)

   


(54) Axial air movement fans


(57) An axial air movement fan comprises a hub (1) with a plurality of elongate fan blades (3) extending generally radially outwardly therefrom, each blade (3) including at least one damping mass (11) secured to the fan blade to enable the mass to oscillate relative to the fan blade (3) in response to oscillatory flexing of the fan blade in a first plane, thereby to damp the flexing of the fan blade.







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Search report