(19)

(11)

EP 4 256 255 A1

(12)

(43) Date of publication: 11.10.2023 Bulletin 2023/41 (21) Application number: 21844387.7 (22) Date of filing: 07.12.2021

(51) International Patent Classification (IPC):  F25D 3/08(2006.01) (52) Cooperative Patent Classification (CPC): F25D 3/08 (86) International application number: PCT/IB2021/061415 (87) International publication number: WO 2022/123442 (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 (30) Priority: 07.12.2020 PT 2020116920 (71) Applicant: COCHOFEL DE CASTRO PIZARRO MONTEIRO, Manuel Gustavo 4150-404 Porto (PT)	(72) Inventors: DA SILVA SANTOS, Joao Manuel 4445-290 Ermesinde (PT) MARQUES DA SILVA, Gonçalo 4515-493 Gondomar (PT) COCHOFEL DE CASTRO PIZARRO MONTEIRO, Manuel Gustavo 4150-404 Porto (PT) (74) Representative: Patentree  Edificio Net Rua de Salazares, 842 4149-002 Porto 4149-002 Porto (PT)