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EP 4 367 456 A1

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(43) Date of publication: 15.05.2024 Bulletin 2024/20 (21) Application number: 22838000.2 (22) Date of filing: 06.07.2022

(51) International Patent Classification (IPC):  F25D 19/00(2006.01) F25D 21/14(2006.01) F25D 17/08(2006.01) F25D 23/00(2006.01) F25D 17/06(2006.01) F25D 11/00(2006.01) (52) Cooperative Patent Classification (CPC): F25D 21/14; F25D 19/02; F25D 2321/1412 (86) International application number: PCT/KR2022/009807 (87) International publication number: WO 2023/282648 (12.01.2023 Gazette 2023/02)

(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: 08.07.2021 KR 20210089705 (71) Applicant: LG Electronics Inc. Yeongdeungpo-guSeoul 07336 (KR)	(72) Inventors: CHUNG, Myungjin Seoul 08592 (KR) NAM, Yoonseong Seoul 08592 (KR) KIM, Sounguk Seoul 08592 (KR) KIM, Kyungseok Seoul 08592 (KR) (74) Representative: Ter Meer Steinmeister & Partner  Patentanwälte mbB Nymphenburger Straße 4 80335 München 80335 München (DE)