초록 ▼

A compact web dryer oven, (A,A′) is disclosed which is heat efficient, may be open for convenient cleaning, and raises automatically under the effects of an explosion to relieve pressure and reduce damage to the oven interior. The oven includes a lower housing (B) and an upper housing (C) which are

A compact web dryer oven, (A,A′) is disclosed which is heat efficient, may be open for convenient cleaning, and raises automatically under the effects of an explosion to relieve pressure and reduce damage to the oven interior. The oven includes a lower housing (B) and an upper housing (C) which are essentially identical. Each housing includes an air distribution system having a short path and recycle time which may include a hot air discharge blower (H,110,112,114), and an air distributing plenum (I, 116). Lower and upper hot air registers (E,F) receive the proportioned air flow. The air registers include spaced tubular members (22) transverse to the air diffuser manifold having an air divider nozzle (G) positioned between each member. A first nozzle (32), second nozzle (34), and third nozzle (42) are defined relative to tubular members (22) and nozzle bodies (G) which accelerate the flow of air in a manner to balance the air currents at the web. Air returns through slots (50,50′) to air return chamber (130) in a closed loop so each hot air register can operate at a different temperature to treat dissimilar sides of a web. Isolated air return chambers (154a,156a,158a) define a series of drying sections (154,156,158) in each housing. Intake and exhaust ports (171,177) establish a slightly higher negative pressure in the hot air register of each section to facilitate web travel.

대표청구항 ▼

A compact dryer oven for drying a travelling web and the like comprising: pair of superposed oven housings between which said web travels for drying, each of said housings including a hot air discharge means for supplying hot air, an air plenum means disposed above said travelling web for delivering

A compact dryer oven for drying a travelling web and the like comprising: pair of superposed oven housings between which said web travels for drying, each of said housings including a hot air discharge means for supplying hot air, an air plenum means disposed above said travelling web for delivering said hot air across a width of said web; and a series of individual drying sections defined in succession in said hoven housings collinear with said web travel wherein each drying section includes: an air return chamber, a hot air register through which said hot air is distributed across said width of said web; a blower means associated exclusively with said section for forcing said hot air through said air plenum means and said hot air register, and; air return means associated exclusively with said section for returning air from said hot air register to said air return chamber.