(19)

(11)

EP 3 938 712 A1

(12)

(43) Date of publication: 19.01.2022 Bulletin 2022/03 (21) Application number: 20713398.4 (22) Date of filing: 12.03.2020

(51) International Patent Classification (IPC):  F24D 3/10(2006.01) (52) Cooperative Patent Classification (CPC): F24D 3/1075; F24D 3/1008 (86) International application number: PCT/NL2020/050163 (87) International publication number: WO 2020/185084 (17.09.2020 Gazette 2020/38)

(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: 12.03.2019 NL 2022725 (71) Applicant: Flamco B.V. 3751 LJ Bunschoten (NL)	(72) Inventor: CNOSSEN, Jan Henk 8723 CP KOUDUM (NL) (74) Representative: EP&C  P.O. Box 3241 2280 GE Rijswijk 2280 GE Rijswijk (NL)