Patent ID: 7296995
Filing Date: 2007-11-20
Classification: F26B

Abstract:
1. Circulating air oven ( 1 ) for treating a material web ( 25 ) guided through the circulating air oven ( 1 ), comprising means for supplying air and means for discharging air and a blower ( 15 ) for conveying air, as well as at least one transport mechanism ( 17 ) for transport of the material web ( 25 ) through a passage space ( 77 ) between two rows of nozzle chambers ( 27 ), which guide air, which are arranged one above the other, and which extend perpendicular to a transport direction (T) of a conveyor belt ( 21 ) and having nozzles ( 29 ) arranged opposite each other, the nozzle chambers ( 27 ) are connectable to a pressure side of the blower ( 15 ) by a control means ( 35 , 149 , 53 , 71 , 79 ), the individual nozzle chambers ( 27 ) are selectively connectable to the pressure side or to a suction side of the blower ( 15 , 55 ) and air can be conveyed into a pressure chamber ( 5 ) by the blower ( 15 ) and the pressure chamber ( 5 ) can be connected to each individual one of the nozzle chambers ( 27 ) by opening pressure flaps ( 35 ) or diversion flaps ( 79 ) and that a suction chamber ( 39 ) connected to the suction side of the blower ( 15 ) is arranged and can be connected by suction flaps ( 49 ) to the individual nozzle chambers ( 27 ).