(19)

(11)

EP 4 244 487 A2

(12)

(88) Date of publication A3: 28.07.2022 (43) Date of publication: 20.09.2023 Bulletin 2023/38 (21) Application number: 21840285.7 (22) Date of filing: 10.12.2021

(51) International Patent Classification (IPC):  F04D 17/12(2006.01) F04D 27/00(2006.01) F04D 29/056(2006.01) F04D 25/06(2006.01) F04D 27/02(2006.01) (52) Cooperative Patent Classification (CPC): F04D 17/12; F04D 25/0606; F04D 27/0261; F04D 29/056; F04D 27/0215; F04D 27/001; F05D 2270/335; F04D 27/0292; F04D 27/0207 (86) International application number: PCT/US2021/062800 (87) International publication number: WO 2022/140079 (30.06.2022 Gazette 2022/26)

(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: KH MA MD TN (30) Priority: 21.12.2020 US 202017247724 21.12.2020 US 202017247725 (60) Divisional application: 23179640.0 (71) Applicant: Emerson Climate Technologies, Inc. Sidney, OH 45365 (US)

(72) Inventors: PEREVOZCHIKOV, Michael M. Sidney, Ohio 45365 (US) SWALLOW, Matthew J. Sidney, Ohio 45365 (US) (74) Representative: ATIP  Armstrong Teasdale Limited 38-43 Lincoln's Inn Fields London WC2A 3PE London WC2A 3PE (GB)