(19)

(11)

EP 3 931 513 A1

(12)

(43) Date of publication: 05.01.2022 Bulletin 2022/01 (21) Application number: 20707379.2 (22) Date of filing: 20.02.2020

(51) International Patent Classification (IPC):  F28F 3/04(2006.01) F28D 21/00(2006.01) F28D 9/00(2006.01) F28F 9/02(2006.01) (52) Cooperative Patent Classification (CPC): F28F 9/026; F28F 2275/04; F28F 2275/14; F28D 2021/0071; F28F 3/046; F28D 9/005 (86) International application number: PCT/EP2020/054438 (87) International publication number: WO 2020/173797 (03.09.2020 Gazette 2020/36)

(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: 27.02.2019 IT 201900000665 U (71) Applicant: ONDA S.p.A. 36065 Mussolente (Vicenza) (IT)	(72) Inventors: CALACIURA, Paolo 36045 LONIGO (IT) GOLIN, Enrico 36065 MUSSOLENTE (IT) (74) Representative: Modiano, Micaela Nadia et al Modiano & Partners Via Meravigli, 16 20123 Milano 20123 Milano (IT)