(19)

(11)

EP 2 406 550 A1

(12)

(43) Date of publication: 18.01.2012 Bulletin 2012/03 (21) Application number: 10750425.0 (22) Date of filing: 11.03.2010

(51) International Patent Classification (IPC):  F24F 3/052(2006.01) F24F 11/00(2006.01) (86) International application number: PCT/FI2010/050183 (87) International publication number: WO 2010/103184 (16.09.2010 Gazette 2010/37)

(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 MK MT NL NO PL PT RO SE SI SK SM TR (30) Priority: 12.03.2009 FI 20095258 (71) Applicant: Swegon ILTO Oy 20780 Kaarina (FI)	(72) Inventor: ROSENQVIST, Aki 21600 Parainen (FI) (74) Representative: Kärkkäinen, Veli-Matti  Kolster Oy Ab Iso Roobertinkatu 23 P.O. Box 148 00121 Helsinki 00121 Helsinki (FI)