(19)

(11)

EP 4 824 488 A1

(12)

(43) Date of publication: 21.10.2026 Bulletin 2026/43 (21) Application number: 24833453.4 (22) Date of filing: 12.12.2024

(51) International Patent Classification (IPC):  F26B 21/00(2026.01) (52) Cooperative Patent Classification (CPC): F26B 21/006; F26B 5/02; F26B 21/37; F26B 21/55 (86) International application number: PCT/EP2024/085972 (87) International publication number: WO 2025/125461 (19.06.2025 Gazette 2025/25)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: GE KH MA MD TN (30) Priority: 12.12.2023 EP 23215902 (71) Applicant: Teknologisk Institut 2630 Taastrup (DK)	(72) Inventor: BARDENSTEIN, Alexander Leo 2630 Taastrup (DK) (74) Representative: Plougmann Vingtoft a/s  Strandvejen 70 2900 Hellerup 2900 Hellerup (DK)