(19)

(11)

EP 3 749 908 A1

(12)

(43) Date of publication: 16.12.2020 Bulletin 2020/51 (21) Application number: 19751804.6 (22) Date of filing: 05.02.2019

(51) International Patent Classification (IPC):  F28D 20/02(2006.01) H02S 10/20(2014.01) F24S 60/10(2018.01) C09K 5/06(2006.01) (86) International application number: PCT/FI2019/000002 (87) International publication number: WO 2019/155114 (15.08.2019 Gazette 2019/33)

(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: 06.02.2018 FI 20187013 (71) Applicant: Reijonen, Mika Tapio 00570 Helsinki (FI)	(72) Inventor: Reijonen, Mika Tapio 00570 Helsinki (FI)