(19)

(11)

EP 2 828 584 A1

(12)

(43) Date of publication: 28.01.2015 Bulletin 2015/05 (21) Application number: 13705523.2 (22) Date of filing: 14.02.2013

(51) International Patent Classification (IPC):  F24F 7/007(2006.01) F24F 13/10(2006.01) F24F 11/00(2006.01) (86) International application number: PCT/GB2013/000063 (87) International publication number: WO 2013/121168 (22.08.2013 Gazette 2013/34)

(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: 17.02.2012 GB 201202718 (71) Applicant: Flakt Woods Limited Colchester Essex CO4 5ZD (GB)	(72) Inventor: GOWER, Douglas, Lindsay Colchester Essex C04 5ZD (GB) (74) Representative: Moore, Derek  Jensen & Son 366-368 Old Street London EC1V 9LT London EC1V 9LT (GB)