Positive pressure web floater dryer with parallel flow

Details Positive pressure web floater dryer with parallel flow Positive pressure web floater dryer with parallel flow

F - Mech Eng,Light,Heat,Weapons

26

B

34/10, 271/72

F26B 13/20 (2006.01)

Patent

CA 1315974

71727-50 ABSTRACT OF THE DISCLOSURE A nozzle assembly for a web dryer is described. The nozzle assembly includes (a) an elongated plenum chamber defined by a base plate, upstream and downstream vertical parallel side plates, and end closure plates, (b) a flat pressure plate adapted to form a gas flow zone with a moving web, (c) a primary jet of the air foil Coanda type disposed at the upstream of the pressure plate continuously directing gas downstream along the face of the plate, and (d) a single secondary jet of the impingement type disposed at the generally right angled downstream terminus of the pressure plate to continuously direct gas initially substantially perpendicularly to the web and to gas flowing downstream along the gas flow zone. A modified double slot nozzle is used, a proper distance is maintained between adjacent nozzles, and the spacing of the slots within a given nozzle is optimized. Each nozzle on an upper row is between two nozzles on a bottom row of the web with no more than 12.5 mm overlap.

590543

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