(19)

(11)

EP 4 172 402 A2

(12)

(88) Date of publication A3: 03.02.2022 (43) Date of publication: 03.05.2023 Bulletin 2023/18 (21) Application number: 21733426.7 (22) Date of filing: 15.06.2021

(51) International Patent Classification (IPC):  D06F 75/10(2006.01) D06F 87/00(2006.01) F24D 19/00(2006.01) D06F 75/12(2006.01) F22B 1/28(2006.01) (52) Cooperative Patent Classification (CPC): D06F 87/00; D06F 75/10; D06F 75/12; F22B 1/284; F22B 37/50; F22B 1/00 (86) International application number: PCT/EP2021/066085 (87) International publication number: WO 2021/259704 (30.12.2021 Gazette 2021/52)

(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: 25.06.2020 EP 20182207 (71) Applicant: Koninklijke Philips N.V. 5656 AG Eindhoven (NL)	(72) Inventors: GOH, Wei, Yang, Brian 5656 AE Eindhoven (NL) WONG, Kai 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)