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(11)

EP 3 881 012 A1

(12)

(43) Date of publication: 22.09.2021 Bulletin 2021/38 (21) Application number: 19802411.9 (22) Date of filing: 23.10.2019

(51) International Patent Classification (IPC):  F25B 9/08(2006.01) F25B 1/10(2006.01) F25B 5/02(2006.01) F25B 9/00(2006.01) (52) Cooperative Patent Classification (CPC): F25B 2400/13; F25B 2341/0014; F25B 5/02; F25B 9/008; F25B 1/10; F25B 2400/23; F25B 9/08; F25B 2341/0015 (86) International application number: PCT/US2019/057536 (87) International publication number: WO 2020/101846 (22.05.2020 Gazette 2020/21)

(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: 12.11.2018 CN 201811338236 (71) Applicant: Carrier Corporation Palm Beach Gardens, FL 33418 (US)	(72) Inventors: HU, Jichao Shanghai 201206 (CN) HUANG, Wei Shanghai 201206 (CN) LIU, Hongsheng Shanghai 201204 (CN) XU, Jiaoquan Shanghai 201206 (CN) (74) Representative: Dehns  St. Bride's House 10 Salisbury Square London EC4Y 8JD London EC4Y 8JD (GB)