Patent ID: 8046934

Claim:
A convective system for a dryer installation arranged transversally with respect to a web to be dried, said convective system comprising an exterior casing for suction of combustion products with opening towards the web a first and second suction ducts and sucking said combustion products into said convective system said first suction duct sucking said combustion products into said exterior casing a mixing and blowing device for re-use of said combustion products, thereby mixing cold air with said combustion products resulting in a gas mixture with lower temperature an internal casing inside said external casing with at least one opening towards the web said internal casing having openings allowing gas flow from external casing to internal casing of said gas mixture a blowing duct under said internal casing wherein said second suction duct is also arranged under said internal casing said second suction duct extracting a second flow of combustion products into said internal casing said second flow of combustion products consequently being mixed with said gas mixture with lower temperature resulting in a mixture of gasses with a temperature that is higher than said first gas mixture said resulting mixture of gasses being blown to the drying web by said blowing duct.