(19)
(11) EP 2 031 208 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
14.11.2012 Bulletin 2012/46

(43) Date of publication A2:
04.03.2009 Bulletin 2009/10

(21) Application number: 08162261.5

(22) Date of filing: 12.08.2008
(51) International Patent Classification (IPC): 
F01P 5/02(2006.01)
F04D 29/32(2006.01)
 F04D 19/00(2006.01)
F04D 29/38(2006.01)
(84) Designated Contracting States:
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 States:
AL BA MK RS

(30) Priority: 21.08.2007 IT MI20071681

(71) Applicant: SAME DEUTZ-FAHR S.P.A.
24047 Treviglio (Bergamo) (IT)

(72) Inventors:
  • Paggi, Bruno
    24047 Treviglio (Bergamo) (IT)
  • Benzoni, Giuseppe
    24020 Fino del Monte (Bergamo) (IT)

(74) Representative: Ottazzo, Marco Francesco Agostino et al
Barzanò & Zanardo Milano S.p.A. Via Borgonuovo, 10
20121 Milano
20121 Milano (IT)

   


(54) Axial fan for cooling the underhood of a farm machine


(57) Herein described is an axial fan for cooling the underhood of a farm machine, of the type made up of a rotor (10) provided with a plurality of blades (12) with a wing profile and a substantially radial development constrained against the central hub (14) of the rotor (10) at one of their first ends. Each blade (12) is made up of a first element or main profile (18) and by at least a second element or flap (20) arranged in proximity to the inlet edge (18') of the first element or main profile (18). A blading profile of such type allows pitch setting the blades with considerable angles of attack and obtaining high dynamic values, avoiding the occurrence of separations of the boundary layer from the top layer of the blade profile itself at the same time.







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