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EP 4 352 366 A1

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(43) Date of publication: 17.04.2024 Bulletin 2024/16 (21) Application number: 22731613.0 (22) Date of filing: 02.06.2022

(51) International Patent Classification (IPC):  F04D 25/06(2006.01) F04D 29/08(2006.01) F04D 29/28(2006.01) F04D 29/62(2006.01) F04D 17/16(2006.01) F04D 29/02(2006.01) F04D 29/26(2006.01) F04D 29/32(2006.01) F04D 29/64(2006.01) (52) Cooperative Patent Classification (CPC): F04D 29/281; F04D 29/329; F04D 29/023; F04D 29/626; F04D 29/646; F05D 2300/43; F04D 25/0613; F04D 29/083; F04D 29/263; F04D 17/16 (86) International application number: PCT/EP2022/064989 (87) International publication number: WO 2022/258464 (15.12.2022 Gazette 2022/50)

(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: 07.06.2021 WO PCT/CN2021/098693 (71) Applicant: Koninklijke Philips N.V. 5656 AG Eindhoven (NL)	(72) Inventors: GU, Wei 5656 AG Eindhoven (NL) LIN, Fu-Lung 5656 AG Eindhoven (NL) HUANG, Haiyong 5656 AG Eindhoven (NL) LI, Bing 5656 AG Eindhoven (NL) LUO, Zhongchi 5656AG Eindhoven (NL) TANG, Lijian 5656 AG Eindhoven (NL) CHEN, Weizhong 5656 AG Eindhoven (NL) (74) Representative: Philips Intellectual Property & Standards  High Tech Campus 52 5656 AG Eindhoven 5656 AG Eindhoven (NL)