Drier Installation for Drying Web
First Claim
1. A drier installation for drying a web, said installation being provided for drying a maximum web width, said installation comprising:
- radiant elements configured to radiate said web arranged in at least one row stretching out in a transverse direction to a substantially entire maximum web width, andat least a transversal convective system equipped with suction and blowing devices configured to suck at least part of combustion products produced by said radiant elements by a suction duct and configured to blow said part of the combustion products towards said web by a blowing duct, wherein said suction and blowing ducts stretch out in the transverse direction of said web,said convective system comprising at least a mixing device installed opposite of the web in relation to corresponding suction and blowing ducts, wherein the mixing device is arranged so as to suck and/or blow said combustion products, wherein a vector average of projections in a plane perpendicular to said web and stretching out in the transverse direction of said web, has a component parallel to the web that is smaller than said maximum web width of said web, said vectors representing respective trajectories of different jets of sucked and/or blown combustion products.
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Accused Products
Abstract
A drier installation (1) for drying web (2), more particularly paper, which installation is provided for drying a maximum web width, the installation (1) comprises gas-heated radiant elements (3) for radiating the web, arranged according to at least one row (4) stretching out in the transversal (5) direction over the substantially entire maximum web width. The installation (1) comprises at least a transversal convective system (7, 36) equipped with suction and blowing devices (8) for sucking at least part of the combustion products produced by the radiant elements (3) by means of a suction duct (13) and for blowing this pa o the combustion products towards the web (2) by means of a blowing duct (14). Both suction (13) and blowing (14) ducts stretch out in the transversal (5) direction of the web (2). The convective system (7, 36 comprising at least a mixing device (12, 22, 28, 37, 46) installed opposite of the passing web (2) in relation to corresponding suction (13) and blowing (14) ducts and arranged so as to suck and/or blow the combustion products. The drier installation as subject of the present invention is characterized in that the vector average of the projections (V1, V2, V3, V5, V6, V7, V8) in a plane (P1) perpendicular to the web ( ) and stretching out in the transversal (5) direction of the web (2), has component (V4) parallel to the web (2) that is smaller than the maximum web width of the web (2), the vectors representing the respective trajectories of the different jets of sucked and/or blown combustion products.
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Citations
17 Claims
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1. A drier installation for drying a web, said installation being provided for drying a maximum web width, said installation comprising:
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radiant elements configured to radiate said web arranged in at least one row stretching out in a transverse direction to a substantially entire maximum web width, and at least a transversal convective system equipped with suction and blowing devices configured to suck at least part of combustion products produced by said radiant elements by a suction duct and configured to blow said part of the combustion products towards said web by a blowing duct, wherein said suction and blowing ducts stretch out in the transverse direction of said web, said convective system comprising at least a mixing device installed opposite of the web in relation to corresponding suction and blowing ducts, wherein the mixing device is arranged so as to suck and/or blow said combustion products, wherein a vector average of projections in a plane perpendicular to said web and stretching out in the transverse direction of said web, has a component parallel to the web that is smaller than said maximum web width of said web, said vectors representing respective trajectories of different jets of sucked and/or blown combustion products. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification