(19)

(11)

EP 4 298 393 A1

(12)

(43) Date of publication: 03.01.2024 Bulletin 2024/01 (21) Application number: 22708898.6 (22) Date of filing: 24.02.2022

(51) International Patent Classification (IPC):  F28D 21/00(2006.01) F24F 6/00(2006.01) F24F 12/00(2006.01) F28D 5/02(2006.01) (52) Cooperative Patent Classification (CPC): F28D 2021/0071; F28D 9/0037; F28F 21/065; F28F 21/084; F28F 2245/02; F28F 2275/085; F28F 2255/143; F28D 21/0014; F28D 5/02 (86) International application number: PCT/EP2022/054625 (87) International publication number: WO 2022/180149 (01.09.2022 Gazette 2022/35)

(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: 25.02.2021 NL 2027648 (71) Applicant: Dutch Innovation in Air Treatment BV 7711 GG Nieuwleusen (NL)	(72) Inventors: TRIP, Vincent 7711 GG Nieuwleusen (NL) VAN DER LEE, Arthur 7711 GG Nieuwleusen (NL) (74) Representative: Cramwinckel, Michiel  Cramwinckel Consultancy Kallenkoterallee 82 A 8331 AJ Steenwijk 8331 AJ Steenwijk (NL)