(19)

(11)

EP 4 314 561 A1

(12)

(43) Date of publication: 07.02.2024 Bulletin 2024/06 (21) Application number: 22718181.5 (22) Date of filing: 25.03.2022

(51) International Patent Classification (IPC):  F04D 1/06(2006.01) F04D 29/041(2006.01) F04D 17/12(2006.01) F04D 29/12(2006.01) (52) Cooperative Patent Classification (CPC): F04D 29/0416; F04D 29/12; F04D 1/06; F04D 17/122 (86) International application number: PCT/EP2022/057928 (87) International publication number: WO 2022/207491 (06.10.2022 Gazette 2022/40)

(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: 01.04.2021 EP 21166665 (71) Applicant: Sulzer Management AG 8401 Winterthur (CH)	(72) Inventor: VARTIAINEN, Jouni 48601 Kotka (FI) (74) Representative: IPS Irsch AG  Langfeldstrasse 88 8500 Frauenfeld 8500 Frauenfeld (CH)