(19)

(11)

EP 4 256 242 A1

(12)

(43) Date of publication: 11.10.2023 Bulletin 2023/41 (21) Application number: 20965238.7 (22) Date of filing: 07.12.2020

(51) International Patent Classification (IPC):  F24D 17/00(2022.01) F28D 21/00(2006.01) E03C 1/00(2006.01) (52) Cooperative Patent Classification (CPC): F28D 21/0012; E03C 2001/005; F28F 9/0246; F28F 2280/105; F28D 1/0472; F24D 17/0005; E03C 1/00 (86) International application number: PCT/SE2020/051174 (87) International publication number: WO 2022/124952 (16.06.2022 Gazette 2022/24)

(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 (71) Applicant: Idéhuset Gasellen I Varberg AB 432 45 Varberg (SE)	(72) Inventor: HEDELIN, Sture 432 45 Varberg (SE) (74) Representative: Valea AB  Box 1098 405 23 Göteborg 405 23 Göteborg (SE)