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(11)

EP 4 374 113 A1

(12)

(43) Date of publication: 29.05.2024 Bulletin 2024/22 (21) Application number: 22846877.3 (22) Date of filing: 22.07.2022

(51) International Patent Classification (IPC):  F24D 17/02(2006.01) F24H 9/13(2022.01) F24D 3/08(2006.01) F24F 5/00(2006.01) F24H 6/00(2022.01) F25B 41/20(2021.01) F24D 19/10(2006.01) F24H 4/04(2006.01) (52) Cooperative Patent Classification (CPC): F24H 6/00; F24H 4/04; F25B 41/20; F24D 3/08; F24F 5/001; F24F 2005/0025; F24F 11/67; F24F 2221/54; F25B 2313/02742; F25B 2400/0411; F25B 2313/0252 (86) International application number: PCT/ZA2022/050033 (87) International publication number: WO 2023/004443 (26.01.2023 Gazette 2023/04)

(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: 23.07.2021 ZA 202105214 (71) Applicant: Vaviri (Pty) Ltd 4126 Amanzimtoti (ZA)	(72) Inventor: MCRAE, Gordon 4126 Amanzimtoti (ZA) (74) Representative: Dummett Copp LLP  25 The Square Martlesham Heath Ipswich IP5 3SL Ipswich IP5 3SL (GB)