公开(公告)号：US06574974B1

公开(公告)日：2003-06-10

申请号：US09678065

申请日：2000-10-02

申请人： Rollie Richard Herzog ,  Michael Edward Johnson ,  Craig Iung-Pei Tsai ,  Qiao Lu ,  Lisa Gay Smith

发明人： Rollie Richard Herzog ,  Michael Edward Johnson ,  Craig Iung-Pei Tsai ,  Qiao Lu ,  Lisa Gay Smith

IPC分类号： F25C100

CPC分类号： F25C1/04 ,  F25C5/08 ,  F25C2400/10 ,  F25C2600/04 ,  F25D11/02 ,  F25D2400/06 ,  Y10T137/6881

摘要： An electronic controller for an automatic icemaker includes a thermistor coupled to an icemaker mold, a first transducer coupled to a rake, a second transducer coupled to a feeler arm, and a processor. Time and temperature dependent calculations are summed at successive time intervals and compared to a predetermined value to determine when ice is frozen and ready for harvesting. Harvesting is delayed a pre-selected time based upon the position of the feeler arm to avoid premature harvesting. A harvest fix algorithm is executed when ice is not harvested within a predetermined time period by operating a heater at an elevated temperature and by de-energizing a motor. A water fill algorithm determines whether the mold is full of water based upon a change in the thermistor reading.

摘要翻译： 用于自动制冰机的电子控制器包括耦合到制冰机模具的热敏电阻器，耦合到耙子的第一换能器，耦合到探测器臂的第二换能器和处理器。 时间和温度相关计算在连续的时间间隔相加，并与预定值进行比较，以确定何时冰冻并准备好进行收获。 基于触角臂的位置，收获延迟了预先选定的时间，以避免过早收获。 当通过在升高的温度下操作加热器并且使电动机断电时，在预定时间段内未收获冰时执行收割修复算法。 水充填算法基于热敏电阻读数的变化来确定模具是否充满水。