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2. 发明授权

US06418638B1 Dryer control system 有权
标题翻译：烘干机控制系统
公开(公告)号：US06418638B1
公开(公告)日：2002-07-16
申请号：US09483789
申请日：2000-01-14
申请人： John Forster , Stephen Dennis , Jean-Louis Mongrolle
发明人： John Forster , Stephen Dennis , Jean-Louis Mongrolle
IPC分类号： F26B300
CPC分类号： B28B11/24
摘要： A control system and method for a dryer used to dry a line of gypsum boards. The control system automates control of the dryer by measuring the amount of water used at the mixer to produce board segments and determining a desired amount of water to be evaporated for each board segment based on the measured value. The desired amount of water to be evaporated for each board segment is tracked through the production line and the total evaporation load of each dryer zone is continuously calculated based on the board segments located in the dryer zone at a given time. The dryer zone differential temperature is adjusted according to the calculated evaporation load. When a board is rejected from the board line, the desired amounts of water to be evaporated of its corresponding board segments are set to zero, thus signifying a gap. The control system can be implemented using a distributed control concept, with PLC's controlling major process areas, and networked PC based supervisory operator interfaces located at key locations throughout the production line.
摘要翻译：用于干燥一线石膏板的干燥器的控制系统和方法。控制系统通过测量混合器中使用的水的量来自动控制干燥器以产生板段，并且基于测量值确定每个板段所需要蒸发的水量。通过生产线跟踪每个板段所要蒸发的水量，并且每个干燥区的总蒸发负荷根据给定时间内位于干燥区内的板段连续计算。根据计算出的蒸发负荷调节干燥区差温。当板从板线排除时，将其相应的板段所要蒸发的水量设定为零，从而表示间隙。控制系统可以使用分布式控制概念，PLC控制主要处理区域和位于整个生产线关键位置的基于PC的监控操作员接口来实现。

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