(19)

(11)

EP 3 237 808 A1

(12)

(43) Date of publication: 01.11.2017 Bulletin 2017/44 (21) Application number: 15816187.7 (22) Date of filing: 22.12.2015

(51) International Patent Classification (IPC):  F24F 3/16(2006.01) F24F 11/08(2006.01) F24F 11/00(2006.01) (86) International application number: PCT/EP2015/080898 (87) International publication number: WO 2016/102521 (30.06.2016 Gazette 2016/26)

(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: MA MD (30) Priority: 24.12.2014 WO PCT/CN2014/094817 14.01.2015 EP 15151151 (71) Applicant: Koninklijke Philips N.V. 5656 AE Eindhoven (NL)	(72) Inventors: SU, Jing 5656 AE Eindhoven (NL) CHEN, Weizhong 5656 AE Eindhoven (NL) (74) Representative: Freeke, Arnold  Philips Intellectual Property & Standards High Tech Campus 5 5656 AE Eindhoven 5656 AE Eindhoven (NL)