Cylinder dryer with boundary layer turbulence

Details Cylinder dryer with boundary layer turbulence Cylinder dryer with boundary layer turbulence

1980-05-09

1982-08-03

Schwartz, Larry I.

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

34117, 34120, 162289, 162375, F26B 324

Patent

active

043421563

ABSTRACT:
Methods and apparatus for drying a web of material running between a drying cylinder and a traveling covering cloth avoid the formation of air boundary layers which would impede heat exchange with respect to, and humidity removal from, the traveling web. In particular, these methods and apparatus avoid excessive wear of the covering cloth by locating a baffleplate at a distance from the covering cloth within a domain of the boundary layer, and promote a heat exchange and humidity removal through turbulence by impacting air from the boundary layer against a front surface of the baffleplate at a distance from the covering cloth, causing an exchange of air in the boundary layer and in meshes of the covering cloth. Effects of non-uniform humidity profiles are avoided by providing the front surface of the baffleplate with a varying configuration across the covering cloth.

REFERENCES:
patent: 2376502 (1945-05-01), Overton
patent: 3504443 (1970-04-01), Gustafsson

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