(19)

(11)

EP 3 675 975 A1

(12)

(43) Date of publication: 08.07.2020 Bulletin 2020/28 (21) Application number: 18765064.3 (22) Date of filing: 28.08.2018

(51) International Patent Classification (IPC):  A62C 99/00(2010.01) F24F 11/52(2018.01) G08B 25/14(2006.01) F24F 11/64(2018.01) F24F 11/34(2018.01) (86) International application number: PCT/EP2018/073115 (87) International publication number: WO 2019/042991 (07.03.2019 Gazette 2019/10)

(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: 29.08.2017 FI 20175769 (71) Applicant: FläktGroup Sweden AB 551 84 Jönköping (SE)	(72) Inventor: NIEMINEN, Jani 55184 Jönköping (SE) (74) Representative: Kolster Oy Ab  Salmisaarenaukio 1 P.O. Box 204 00181 Helsinki 00181 Helsinki (FI)