(19)

(11)

EP 3 638 970 A1

(12)

(43) Date of publication: 22.04.2020 Bulletin 2020/17 (21) Application number: 18749602.1 (22) Date of filing: 20.07.2018

(51) International Patent Classification (IPC):  F28F 9/02(2006.01) F24F 12/00(2006.01) F28D 21/00(2006.01) F24F 7/08(2006.01) F24F 13/08(2006.01) (86) International application number: PCT/SE2018/050772 (87) International publication number: WO 2019/017831 (24.01.2019 Gazette 2019/04)

(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: 21.07.2017 SE 1750952 (71) Applicant: Nordiska Klimatfabriken AB 64592 Strängnäs (SE)	(72) Inventor: SIVERKLEV, Johan SE-511 69 Sätila (SE) (74) Representative: Kransell & Wennborg KB  P.O. Box 27834 115 93 Stockholm 115 93 Stockholm (SE)