Patent ID: 7975402
Filing Date: 2011-07-12
Classification: D21F,F26B

Abstract:
1. A nozzle insert for a web-drying machine of the type including a nozzle box for directing airflow at a web, the nozzle insert comprising: an intake having a central portion positioned above a web disposed on a rotatable cylinder; a pair of center vanes having a plurality of elongated entry ports therethrough, such that the pair of center vanes are disposed within the central portion for directing airflow, such that the plurality of entry ports extend laterally across the pair of center vanes thereby eliminating more than half of the surface area of the pair of center vanes, and such that the plurality of entry ports allow airflow to pass directly through the center vanes without being laterally diverted; a planar turning vane disposed lateral to the central portion, the turning vane adapted for directing airflow in a lateral direction without forming swirls or eddies; and a straightening vane disposed on the turning vane, the straightening vane adapted for curtailing swirling of the airflow.