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发明授权
CN105229883B 中电压加热器元件湿气检测电路 有权

中电压加热器元件湿气检测电路
摘要：
在各种实施例中，公开了电加热组件。电加热组件包括一个或多个电加热元件。电流泄漏传感器操作耦合到所述一个或多个加热元件。电流泄漏生成指示来自电加热元件的电流泄漏的信号。电流泄漏与和电加热元件接触的湿气的量成比例。晶闸管耦合到电加热元件。晶闸管被配置为控制所述一个或多个加热元件的功率水平。控制逻辑耦合到晶闸管和泄漏电路。控制逻辑被配置为在干燥模式和控制模式下激活所述一个或多个加热元件。当指示电流泄漏的信号低于预定阈值时，控制逻辑从干燥模式切换到控制模式。
摘要（英）：

In various embodiments, an electrical heating assembly is disclosed. The electrical heating assembly comprises one or more electrical heating elements. A current leakage sensor is operatively coupled to the one or more heating elements. The current leakage generates a signal indicative of current leakage from the electrical heating elements. The current leakage is proportional to an amount of moisture in contact with the electrical heating elements. A thyristor is coupled to the electrical heating elements. The thyristor is configured to control a power level of the one or more heating elements. A control logic is coupled to the thyristor and the leakage circuit. The control logic is configured to activate the one or more heating elements in a dry-out mode and a control mode. The control logic switches from the dry-out mode to the control mode when the signal indicative of the current leakage is below a predetermined threshold.

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