(19)

(11)

EP 4 107 454 A1

(12)

(43) Date of publication: 28.12.2022 Bulletin 2022/52 (21) Application number: 21758012.5 (22) Date of filing: 17.02.2021

(51) International Patent Classification (IPC):  F25B 47/02(2006.01) F25B 49/02(2006.01) F25B 13/00(2006.01) (52) Cooperative Patent Classification (CPC): F25B 13/00; F25B 47/025; F25B 41/20; F25B 49/02; F25B 2313/0315; F25B 2600/2515; F24F 1/0003; F24F 1/14; F24F 1/30; F24F 11/84; F24F 2140/20 (86) International application number: PCT/KR2021/002003 (87) International publication number: WO 2021/167337 (26.08.2021 Gazette 2021/34)

(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: 17.02.2020 KR 20200019272 (71) Applicant: LG Electronics Inc. Seoul 07336 (KR)	(72) Inventors: YUM, Hyungyul Seoul 08592 (KR) CHO, Eunjun Seoul 08592 (KR) YOON, Pilhyun Seoul 08592 (KR) (74) Representative: Vossius & Partner Patentanwälte Rechtsanwälte mbB  Siebertstraße 3 81675 München 81675 München (DE)