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(11)

EP 3 592 984 A1

(12)

(43) Date of publication: 15.01.2020 Bulletin 2020/03 (21) Application number: 18712411.0 (22) Date of filing: 08.03.2018

(51) International Patent Classification (IPC):  F04D 27/02(2006.01) F04D 29/46(2006.01) F04D 29/44(2006.01) (86) International application number: PCT/US2018/021609 (87) International publication number: WO 2018/165474 (13.09.2018 Gazette 2018/37)

(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 MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 09.03.2017 US 201762469411 P (71) Applicant: Johnson Controls Technology Company Auburn Hills, Michigan 48326 (US)	(72) Inventor: SNELL, Paul W. York Pennsylvania 17402 (US) (74) Representative: Trinks, Ole  Meissner Bolte Patentanwälte Rechtsanwälte Partnerschaft mbB Postfach 10 26 05 86016 Augsburg 86016 Augsburg (DE)