(19)

(11)

EP 3 574 266 A1

(12)

(43) Date of publication: 04.12.2019 Bulletin 2019/49 (21) Application number: 18705092.7 (22) Date of filing: 22.01.2018

(51) International Patent Classification (IPC):  F24D 19/00(2006.01) (86) International application number: PCT/EP2018/051482 (87) International publication number: WO 2018/138061 (02.08.2018 Gazette 2018/31)

(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 Designated Validation States: MA MD TN (30) Priority: 24.01.2017 IT 201700007368 (71) Applicant: Ci.Fa. S.r.l. 60022 Castelfidardo (AN) (IT)	(72) Inventor: CIAVATTINI, Emiliano 60022 Castelfidardo (AN) (IT) (74) Representative: Baldi, Claudio  Ing. Claudio Baldi S.r.l. Viale Cavallotti, 13 60035 Jesi (Ancona) 60035 Jesi (Ancona) (IT)