(19)

(11)

EP 3 870 896 A1

(12)

(43) Date of publication: 01.09.2021 Bulletin 2021/35 (21) Application number: 19835228.8 (22) Date of filing: 28.11.2019

(51) International Patent Classification (IPC):  F22B 31/04(2006.01) F23G 5/44(2006.01) F23G 5/00(2006.01) (86) International application number: PCT/CZ2019/050056 (87) International publication number: WO 2020/207515 (15.10.2020 Gazette 2020/42)

(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: 11.04.2019 CZ 20190227 (71) Applicant: Vysoká Skola Bánská - Technická Univerzita Ostrava 70800 Ostrava-Poruba (CZ)	(72) Inventors: VILIMEC, Ladislav 70030 Ostrava, Hrabuvka (CZ) KONVICKA, Jaroslav 73801 Frydek-Mistek, Mistek (CZ) HONUS, Stanislav 74719 Bohuslavice (CZ) (74) Representative: Dadej, Leopold  Na Valtické 339/6 691 41 Breclav 4 691 41 Breclav 4 (CZ)