(19)

(11)

EP 3 084 314 A2

(12)

(88) Date of publication A3: 24.09.2015 (43) Date of publication: 26.10.2016 Bulletin 2016/43 (21) Application number: 14827426.9 (22) Date of filing: 16.12.2014

(51) International Patent Classification (IPC):  F24F 13/24(2006.01) F24F 11/00(2006.01) F24F 7/013(2006.01) E03D 9/052(2006.01) (86) International application number: PCT/EP2014/078090 (87) International publication number: WO 2015/091572 (25.06.2015 Gazette 2015/25)

(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: 16.12.2013 GB 201322140 (71) Applicant: Vent-Axia Group Limited Crawley, West Sussex RH10 9YX (GB)	(72) Inventor: GREGSON, Samuel John Crawley West Sussex RH10 9YX (GB) (74) Representative: Boden, Keith McMurray  Fry Heath & Spence LLP The Gables 17 Massetts Road Horley Surrey RH6 7DQ Horley Surrey RH6 7DQ (GB)