(19)

(11)

EP 4 162 210 A2

(12)

(88) Date of publication A3: 10.02.2022 (43) Date of publication: 12.04.2023 Bulletin 2023/15 (21) Application number: 21737735.7 (22) Date of filing: 07.06.2021

(51) International Patent Classification (IPC):  F24F 3/14(2006.01) F24F 12/00(2006.01) F25B 21/02(2006.01) F24F 110/10(2018.01) F24F 5/00(2006.01) F25B 6/04(2006.01) F25B 40/00(2006.01) F24F 110/20(2018.01) (52) Cooperative Patent Classification (CPC): F24F 5/0035; F24F 2110/10; F24F 2110/20; F24F 12/003; F24F 3/14; F24F 5/00; F25B 6/04; F25B 40/00; F25B 21/02; F24F 12/002; F25B 49/02; F25B 25/005; Y02B 30/54; Y02B 30/52; Y02B 30/56 (86) International application number: PCT/GB2021/051411 (87) International publication number: WO 2021/245431 (09.12.2021 Gazette 2021/49)

(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: 06.06.2020 GB 202008559 (71) Applicant: Elsarrag, Esam Manchester M40 3LJ (GB)	(72) Inventor: Elsarrag, Esam Manchester M40 3LJ (GB) (74) Representative: Leyland, Matthew John et al Lincoln IP 4 Rubislaw Place Aberdeen Aberdeenshire AB10 1XN Aberdeen Aberdeenshire AB10 1XN (GB)