Apparatus for drying a fibrous web
AssigneeVoith Patent GmbH
InventorChristian Munch
Life of this patent
Estimating the term…
Abstract
Disclosed is an apparatus for drying a fibrous web, in particular a paper web, paperboard web or tissue web, by way of hot air, on which the fibrous web is charged with the supply air for the drying from a supply air chamber and on which exhaust air from the drying operation passes into an exhaust air chamber, whereby the exhaust air from the exhaust air chamber is supplied at least partly to the suction side of a pressure booster and at least a part of the supply air from the pressure side of the pressure booster is supplied to the supply air chamber.
Claims46
An apparatus for drying a web of fibrous material using hot air, said apparatus comprising:
- a supply air chamber configured for supplying a supply air with which the web is charged for a drying operation;
- an exhaust air chamber configured for being that which an exhaust air from said drying operation passes into;
- a pressure booster including a suction side and a pressure side, said exhaust air from said exhaust air chamber being supplied at least partly to said suction side of said pressure booster, at least a part of said supply air being supplied to said supply air chamber coming from said pressure side of said pressure booster;
- and
- a hood assigned to a drying cylinder arranged downstream from said supply air chamber and said exhaust air chamber in a travel direction of the web, said supply air supplied to said supply air chamber being taken partly from said hood assigned to said drying cylinder.
A machine for producing a web of fibrous material with a three-dimensional surface structure, said machine comprising:
- a drying apparatus for drying the web using hot air, said drying apparatus including:
- a supply air chamber configured for supplying a supply air with which the web is charged for a drying operation;
- an exhaust air chamber configured for being that which an exhaust air from said drying operation passes into;
- a pressure booster including a suction side and a pressure side, said exhaust air from said exhaust air chamber being supplied at least partly to said suction side of said pressure booster, at least a part of said supply air being supplied to said supply air chamber coming from said pressure side of said pressure booster;
- a suction roller including a suction box, said exhaust air chamber including said suction box, said supply air chamber including a hood assigned to said suction roller;
- and
- a permeable structured belt, the web being passed together with said permeable structured belt over said suction roller, the web lying between said permeable structured belt and said suction roller, a hot said supply air flowing out from said hood in succession through said permeable structured belt and the web into said suction box of said suction roller.
Dependencies are inferred from the claim text.