(19)

(11)

EP 4 179 257 A1

(12)

(43) Date of publication: 17.05.2023 Bulletin 2023/20 (21) Application number: 21734928.1 (22) Date of filing: 14.06.2021

(51) International Patent Classification (IPC):  F24C 15/00(2006.01) F24F 8/90(2021.01) (52) Cooperative Patent Classification (CPC): F24F 8/90; F24C 15/006; F24F 8/22 (86) International application number: PCT/IB2021/055204 (87) International publication number: WO 2022/008997 (13.01.2022 Gazette 2022/02)

(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: KH MA MD TN (30) Priority: 10.07.2020 IT 202000016792 (71) Applicant: BORGIANI, Marco 60129 Ancona (AN) (IT)	(72) Inventor: BORGIANI, Marco 60129 Ancona (AN) (IT) (74) Representative: Premru, Rok  Mar.Bre S.R.L., 2, Via San Filippo 60044 Fabriano 60044 Fabriano (IT)