(19)

(11)

EP 4 189 306 A1

(12)

(43) Date of publication: 07.06.2023 Bulletin 2023/23 (21) Application number: 21752257.2 (22) Date of filing: 28.07.2021

(51) International Patent Classification (IPC):  F25B 49/02(2006.01) F25B 29/00(2006.01) F24D 17/02(2006.01) F25B 30/06(2006.01) F25B 25/00(2006.01) F25B 5/02(2006.01) F24F 1/00(2019.01) (52) Cooperative Patent Classification (CPC): F25B 49/02; F25B 2600/13; F25B 2600/2513; F25B 2339/047; F25B 25/005; F25B 2700/21161; F25B 2700/21171; F25B 29/003; F25B 5/02; F25B 30/06; F24D 17/02; F25B 2400/06; F24D 2200/123; F24D 2200/11; F24F 5/0003; F24F 5/0046; F24F 2005/0053; F24F 11/875; Y02B 10/40; Y02B 30/70 (86) International application number: PCT/IT2021/050234 (87) International publication number: WO 2022/024159 (03.02.2022 Gazette 2022/05)

(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: 29.07.2020 IT 202000018463 (71) Applicants: Manni, Diego 36073 Cornedo Vicentino (VI) (IT) Favaretto, Lucia 35127 Padova (PD) (IT)	(72) Inventors: Manni, Diego 36073 Cornedo Vicentino (VI) (IT) Favaretto, Lucia 35127 Padova (PD) (IT) (74) Representative: De Filippis, Sara et al Barzanò & Zanardo Roma S.p.A. Via Piemonte 26 00187 Roma 00187 Roma (IT)