(19)

(11)

EP 4 405 625 A1

(12)

(43) Date of publication: 31.07.2024 Bulletin 2024/31 (21) Application number: 21782906.8 (22) Date of filing: 21.09.2021

(51) International Patent Classification (IPC):  F25B 49/02(2006.01) (52) Cooperative Patent Classification (CPC): F25B 2700/21161; F25B 2700/21171; F25B 2700/2104; F25B 2700/21151; F25B 49/02; F25B 2700/21152; F25B 2700/2106; F25B 2700/1931; F25B 2700/1933; F25B 2600/2513; F25B 2600/0253; F25B 2600/111; F25B 2600/112; F25B 2500/18 (86) International application number: PCT/EP2021/075958 (87) International publication number: WO 2023/046262 (30.03.2023 Gazette 2023/13)

(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: BITZER Electronics A/S 6400 Sønderborg (DK)	(72) Inventors: SØRENSEN, Kresten Kjaer 6440 Augustenborg (DK) NØRGAARD, Hans Jørgen 6400 Sønderborg (DK) (74) Representative: Hoeger, Stellrecht & Partner Patentanwälte mbB  Uhlandstrasse 14c 70182 Stuttgart 70182 Stuttgart (DE)