Multi-zone, multi-conveyor dryer and conversion methods and kit
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United States of America Patent
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Issued Date -
Dec 9, 2004
app pub date -
Feb 25, 2003
filing date -
Feb 25, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method of converting a single-zone, multi-conveyor dryer into a multi-zone multi-conveyor dryer (10) utilizes a conversion kit including a division plate (40) and first and second panels including exit openings (42, 44, 46) and entrance openings (52, 54). The division plate (40) divides the heat chamber (14) into an upper zone (14a) and a lower zone (14b). The first panel is located between a first air plenum (20a) and the heat chamber (14), with the first air plenum (20a) including first and second heat sources (22, 22a) for heating the upper zone (14a) to a temperature greater than the lower zone (14b). The second heat source (22a) is pivotal relative to the first heat source (22) between an operative position and a cleaning position. The second panel is located between a second air plenum (20b) and the heat chamber (14). An extension (56) extends through a wall (21) between the air plenums (20a, 20b), with the entrance opening (54) located in the second panel and within the extension (56) in the first panel. The conversion kit further includes replacement motors for the air circulating devices (24) of higher power for increasing the air circulation rates between the air plenums (20a, 20b) and the heat chamber (14).
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