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(11)

EP 4 084 664 A1

(12)

(43) Date of publication: 09.11.2022 Bulletin 2022/45 (21) Application number: 20824286.7 (22) Date of filing: 18.12.2020

(51) International Patent Classification (IPC):  A47L 9/22(2006.01) A47L 9/28(2006.01) F04D 25/08(2006.01) F04D 29/58(2006.01) (52) Cooperative Patent Classification (CPC): A47L 9/22; F04D 25/082; A47L 9/2889; F04D 29/5806 (86) International application number: PCT/EP2020/086926 (87) International publication number: WO 2021/136682 (08.07.2021 Gazette 2021/27)

(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: 30.12.2019 EP 19219950 (71) Applicant: Koninklijke Philips N.V. 5656 AG Eindhoven (NL)	(72) Inventors: OTTEN, Wessel, Adolf 5656 AE Eindhoven (NL) VAN DER KOOI, Johannes, Tseard 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)