(19)

(11)

EP 2 382 423 A1

(12)

(43) Date of publication: 02.11.2011 Bulletin 2011/44 (21) Application number: 09838971.1 (22) Date of filing: 23.12.2009

(51) International Patent Classification (IPC):  F24F 1/01(2011.01) F24F 13/26(2006.01) (86) International application number: PCT/SE2009/051499 (87) International publication number: WO 2010/085194 (29.07.2010 Gazette 2010/30)

(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: 26.01.2009 SE 0950029 (71) Applicant: Swegon AB 671 29 Arvika (SE)	(72) Inventor: LARSSON, Per Åke S-686 95 Västra Ämtevik (SE) (74) Representative: Hyltner, Jan-Olof  ALBIHNS.ZACCO AB P.O. Box 5581 114 85 Stockholm 114 85 Stockholm (SE)