(19)

(11)

EP 3 701 197 A1

(12)

(43) Date of publication: 02.09.2020 Bulletin 2020/36 (21) Application number: 18795497.9 (22) Date of filing: 25.10.2018

(51) International Patent Classification (IPC):  F24F 3/16(2006.01) F24F 11/63(2018.01) F24F 12/00(2006.01) F24F 110/74(2018.01) F24F 110/70(2018.01) F24F 110/65(2018.01) F24F 11/00(2018.01) F24F 11/72(2018.01) F24F 110/52(2018.01) F24F 110/64(2018.01) F24F 110/72(2018.01) (86) International application number: PCT/EP2018/079310 (87) International publication number: WO 2019/081651 (02.05.2019 Gazette 2019/18)

(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: 26.10.2017 WO PCT/CN2017/107870 08.05.2018 EP 18171214 (71) Applicant: Koninklijke Philips N.V. 5656 AG Eindhoven (NL)	(72) Inventors: ZHANG, Zhiqiang 5656 AE Eindhoven (NL) SU, Jing 5656 AE Eindhoven (NL) KELLY, Declan, Patrick 5656 AE Eindhoven (NL) (74) Representative: Philips Intellectual Property & Standards  High Tech Campus 5 5656 AE Eindhoven 5656 AE Eindhoven (NL)