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(11)

EP 4 241 035 A1

(12)

(43) Date of publication: 13.09.2023 Bulletin 2023/37 (21) Application number: 21806307.1 (22) Date of filing: 01.11.2021

(51) International Patent Classification (IPC):  F28F 9/013(2006.01) F22B 37/24(2006.01) F22B 37/20(2006.01) F16L 3/22(2006.01) (52) Cooperative Patent Classification (CPC): F28D 7/087; F28F 9/013; F28D 2021/0024; F28D 21/001; F22B 37/204; F28F 9/0132; F22B 37/203 (86) International application number: PCT/FI2021/050742 (87) International publication number: WO 2022/096784 (12.05.2022 Gazette 2022/19)

(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: 06.11.2020 FI 20206113 (71) Applicant: Valmet Technologies Oy 02150 Espoo (FI)	(72) Inventor: MERO, Timo 33900 Tampere (FI) (74) Representative: Berggren Oy  P.O. Box 16 Eteläinen Rautatiekatu 10A 00101 Helsinki 00101 Helsinki (FI)