Dryer Conveyor Speed Control Apparatus and Method
In one embodiment, a conveyor speed control system for a dryer is provided. The system includes a dryer having a housing with an entrance and an exit, and a conveyor within the housing, the conveyor capable of moving at a desired speed. A sensor senses the temperature of the interior of the dryer housing. A controller is provided. The controller receives a signal from the temperature sensor. The controller also controls the speed of the conveyor, and limits the speed of the conveyor to a desired speed until a desired dryer housing temperature is attained.
1 . A conveyor speed control system for a dryer comprising:
a dryer having a housing with an entrance and an exit;
a conveyor within the housing, the conveyor capable of moving at a desired speed;
a sensor for sensing the temperature of the interior of the dryer housing; and
a controller, the controller receiving a signal from the temperature sensor, the controller also controlling the speed of the conveyor, the controller further limiting the speed of the conveyor to a desired speed until a desired dryer housing temperature is attained.
2 . The system of claim 1 wherein the first conveyor speed is approximately three feet per minute.
3 . The system of claim 1 wherein the second conveyor speed is approximately twenty feet per minute.
4 . A process for drying comprising the steps of:
warming up a dryer at a first conveyor speed until a desired dryer temperature is attained; and
operating the dryer at a second conveyor speed faster than the first conveyor speed.
5 . The process of claim 4 wherein the first conveyor speed is approximately three feet per minute.
6 . The process of claim 4 wherein the second conveyor speed is approximately twenty feet per minute.
7 . A process for operating a dryer, the dryer having a housing and a conveyor capable of moving at a desired speed within the housing, the process comprising the steps of:
warming up the dryer housing until a desired temperature is attained;
controlling the conveyor speed at a first conveyor speed before the desired temperature is attained; and
controlling the conveyor speed at a second conveyor speed faster than the first conveyor speed after the desired temperature is attained.
8 . The process of claim 7 wherein the first conveyor speed is approximately three feet per minute.
9 . The process of claim 7 wherein the second conveyor speed is approximately twenty feet per minute.