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EP 4 490 408 A1

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(43) Date of publication: 15.01.2025 Bulletin 2025/03 (21) Application number: 23767454.4 (22) Date of filing: 08.03.2023

(51) International Patent Classification (IPC):  F04C 18/16(2006.01) F04C 29/00(2006.01) F04C 29/12(2006.01) (52) Cooperative Patent Classification (CPC): F04C 18/16; F04C 28/12; F04C 2270/185 (86) International application number: PCT/US2023/014847 (87) International publication number: WO 2023/172650 (14.09.2023 Gazette 2023/37)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 09.03.2022 CN 202210221925 (71) Applicants: Johnson Controls Air Conditioning And Refrigeration (Wuxi) Co., Ltd. Wuxi, Jiangsu 214000 (CN) Tyco Fire & Security GmbH 8212 Neuhausen am Rheinfall (CH)

(72) Inventors: ZHANG, Haixian Wuxi, Jiangsu 214000 (CN) CUI, Liqi Wuxi, Jiangsu 214000 (CN) XI, Ye Wuxi, Jiangsu 214000 (CN) (74) Representative: Meissner Bolte Nürnberg  Patentanwälte Rechtsanwälte Partnerschaft mbB Bankgasse 3 90402 Nürnberg 90402 Nürnberg (DE)