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(11)

EP 4 168 727 A1

(12)

(43) Date of publication: 26.04.2023 Bulletin 2023/17 (21) Application number: 21810353.9 (22) Date of filing: 12.11.2021

(51) International Patent Classification (IPC):  F26B 17/20(2006.01) F26B 25/00(2006.01) F26B 3/24(2006.01) (52) Cooperative Patent Classification (CPC): F26B 17/20; F26B 25/009; F26B 2200/18; F26B 3/24 (86) International application number: PCT/EP2021/081539 (87) International publication number: WO 2022/135792 (30.06.2022 Gazette 2022/26)

(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: 22.12.2020 EP 20216587 (71) Applicant: Andritz Gouda B.V. 2740 AJ Waddinxveen (NL)	(72) Inventors: VAN ELDEREN, Onno 2743EV Waddinxveen (NL) DOS SANTOS PRUCOLE, Elisia 2274TD Voorburg (NL) (74) Representative: Wirnsberger & Lerchbaum Patentanwälte OG  Mühlgasse 3 8700 Leoben 8700 Leoben (AT)