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(11)

EP 4 073 313 A1

(12)

(43) Date of publication: 19.10.2022 Bulletin 2022/42 (21) Application number: 20820233.3 (22) Date of filing: 12.12.2020

(51) International Patent Classification (IPC):  D06F 75/10(2006.01) D06F 39/00(2020.01) D06F 75/12(2006.01) (52) Cooperative Patent Classification (CPC): D06F 75/12; D06F 75/10; F22B 1/28 (86) International application number: PCT/EP2020/085867 (87) International publication number: WO 2021/116472 (17.06.2021 Gazette 2021/24)

(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: 12.12.2019 EP 19215484 (71) Applicant: Koninklijke Philips N.V. 5656 AG Eindhoven (NL)	(72) Inventors: CHEN, Sen Kee 5656 AE Eindhoven (NL) LIM, Yu Xuan 5656 AE Eindhoven (NL) TAN, Kit Hai 5656 AE Eindhoven (NL) YUAN, Ding 5656 AE Eindhoven (NL) (74) Representative: de Vries, Janna  Philips Domestic Appliances Nederland B.V. High Tech Campus 42 5656 AE Eindhoven 5656 AE Eindhoven (NL)