(19)

(11)

EP 4 256 258 A1

(12)

(43) Date of publication: 11.10.2023 Bulletin 2023/41 (21) Application number: 21823188.4 (22) Date of filing: 26.11.2021

(51) International Patent Classification (IPC):  F25J 1/00(2006.01) (52) Cooperative Patent Classification (CPC): F25J 1/0022; F25J 1/0242; F25J 2260/30; F25J 1/0284; F25J 1/0052; F25J 2240/82; F25J 1/023; F25J 2210/06; F25J 2245/90; F25J 1/0297; F25J 2205/70; F25J 2220/66; F25J 2220/64; F25J 2205/24; F25J 1/0268; F25J 2240/70; F25J 1/0283; F25J 1/0291; F25J 1/0212; F25J 1/0055; F25J 1/004; F25J 2230/04; F25J 1/0217; F25J 1/0207; F25J 1/0216; F25J 1/0292; F25J 1/0218; F25J 1/0072; F25J 1/005; F25J 1/0265; F25J 1/0204; F25J 2270/16; F25J 1/0288; F25J 1/0087; F25J 1/0085; F25J 1/0082; F25J 1/0037; F25J 1/0035; F25J 1/0202 (86) International application number: PCT/EP2021/025467 (87) International publication number: WO 2022/117228 (09.06.2022 Gazette 2022/23)

(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: 04.12.2020 IT 202000030023 (71) Applicant: Nuovo Pignone Tecnologie S.r.l. 50127 Florence (IT)	(72) Inventors: AMIDEI, Simone Firenze 50127 (IT) BURRATO, Andrea Firenze 50127 (IT) CALDERARO, Andrea Firenze 50127 (IT) (74) Representative: Illingworth-Law, William Illingworth  Baker Hughes 245 Hammersmith Chalk Hill Road London W6 8DW London W6 8DW (GB)