(19)

(11)

EP 2 655 984 A1

(12)

(43) Date of publication: 30.10.2013 Bulletin 2013/44 (21) Application number: 11850004.0 (22) Date of filing: 30.11.2011

(51) International Patent Classification (IPC):  F24F 13/32(2006.01) (86) International application number: PCT/FI2011/051061 (87) International publication number: WO 2012/085332 (28.06.2012 Gazette 2012/26)

(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 (30) Priority: 20.12.2010 FI 20106351 (71) Applicant: Fläkt Woods AB 55184 Jönköping (SE)	(72) Inventor: NYSTRÖM, Juuso FI-37600 Valkeakoski (FI) (74) Representative: Heinänen, Pekka Antero et al Heinänen Oy Patent Agency Airport Plaza Äyritie 8 D 01510 Vantaa 01510 Vantaa (FI)