(19)

(11)

EP 4 042 085 A1

(12)

(43) Date of publication: 17.08.2022 Bulletin 2022/33 (21) Application number: 19808881.7 (22) Date of filing: 09.10.2019

(51) International Patent Classification (IPC):  F28C 3/08(2006.01) F28D 1/053(2006.01) F28F 13/00(2006.01) F28F 27/00(2006.01) G05D 23/19(2006.01) F28D 1/02(2006.01) F28D 5/00(2006.01) F28F 25/02(2006.01) G05D 7/06(2006.01) F28D 21/00(2006.01) (52) Cooperative Patent Classification (CPC): F28C 3/08; F28D 5/00; F28D 2021/007; F28F 25/02; F28F 27/00; F28F 13/003 (86) International application number: PCT/IB2019/058586 (87) International publication number: WO 2021/069957 (15.04.2021 Gazette 2021/15)

(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 (71) Applicant: Aquatech S.r.l. 30036 Santa Maria di Sala (VE) (IT)	(72) Inventors: CALDATO, Roberto 31100 Treviso (IT) CAPPELLINI, Davide 26029 Soncino (CR) (IT) CAZZARO, Paolo 35020 Saonara (PD) (IT) (74) Representative: Villanova, Massimo et al Luppi Intellectual Property Srl Viale Corassori, 54 41124 Modena 41124 Modena (IT)