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(11)

EP 4 430 343 A1

(12)

(43) Date of publication: 18.09.2024 Bulletin 2024/38 (21) Application number: 22813554.7 (22) Date of filing: 07.11.2022

(51) International Patent Classification (IPC):  F23N 5/02(2006.01) F23N 5/12(2006.01) F23N 5/00(2006.01) (52) Cooperative Patent Classification (CPC): F23N 5/022; F23N 5/027; F23N 5/006; F23N 5/123 (86) International application number: PCT/EP2022/080940 (87) International publication number: WO 2023/083734 (19.05.2023 Gazette 2023/20)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 11.11.2021 EP 21207726 (71) Applicant: BDR Thermea Group B.V. 7332 BD Apeldoorn (NL)	(72) Inventors: VAN SCHAAIK, Sibrecht 7332 BD Apeldoorn (NL) WESTHOF, Dirk Jan 7332 BD Appeldoorn (NL) (74) Representative: Dennemeyer & Associates S.A.  Postfach 70 04 25 81304 München 81304 München (DE)