(19)

(11)

EP 4 217 532 A1

(12)

(43) Date of publication: 02.08.2023 Bulletin 2023/31 (21) Application number: 21773559.6 (22) Date of filing: 07.09.2021

(51) International Patent Classification (IPC):  D06F 81/00(2006.01) D06F 81/04(2006.01) (52) Cooperative Patent Classification (CPC): D06F 81/00; D06F 81/04 (86) International application number: PCT/EP2021/074617 (87) International publication number: WO 2022/053468 (17.03.2022 Gazette 2022/11)

(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: 10.09.2020 EP 20195410 (71) Applicant: Koninklijke Philips N.V. 5656 AG Eindhoven (NL)	(72) Inventors: LING, Loo, Ping 5656 AE Eindhoven (NL) GOH, See, Chen 5656 AE Eindhoven (NL) SUDDHAN, Easwaravadivel, Hari, Hara 5656 AE Eindhoven (NL) (74) Representative: Vollering, Stefanus Franciscus Maria  Philips Domestic Appliances IP Department High Tech Campus 42 5656 AE Eindhoven 5656 AE Eindhoven (NL)