INFRARED AND HOT AIR DRYER COMBINATION

摘要

A combined infrared and hot air dryer includes a pressurized hood (10) which is fed with combustion air through an air delivery duct (18). Each cross section zone of the hood includes a mixer (22). The air enters the mixer without any direct connection between the delivery duct (18) and the mixer. Gas is supplied to each mixer from a gas manifold (20) having a gas supply tube (24) for each mixer. Excess air form the hood is fed through thin walled tubes into the IR exhaust duct in a counter flow fashion to provide preheated clean air for air bars trailing the infrared zone.