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(11)

EP 3 953 522 A1

(12)

(43) Date of publication: 16.02.2022 Bulletin 2022/07 (21) Application number: 20821265.4 (22) Date of filing: 15.12.2020

(51) International Patent Classification (IPC):  D06F 81/02(2006.01) D06F 81/00(2006.01) D06F 87/00(2006.01) D06F 73/00(2006.01) D06F 81/04(2006.01) (52) Cooperative Patent Classification (CPC): D06F 81/02; D06F 81/00; D06F 81/04; D06F 73/00; D06F 87/00 (86) International application number: PCT/EP2020/086093 (87) International publication number: WO 2021/130050 (01.07.2021 Gazette 2021/26)

(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: 23.12.2019 EP 19219203 (71) Applicant: Koninklijke Philips N.V. 5656 AG Eindhoven (NL)	(72) Inventors: LIM, Lid, Jlen 5656 AE Eindhoven (NL) MA, Kok, Wah 5656 AE Eindhoven (NL) (74) Representative: Kapoor, Pavan Puneet  Philips Domestic Appliances IP Department High Tech Campus 42 5656 AE Eindhoven 5656 AE Eindhoven (NL)