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1. 发明授权

US5954265A Diagnostic system for a fuel-fired water heater 失效
标题翻译：燃油热水器诊断系统
公开(公告)号：US5954265A
公开(公告)日：1999-09-21
申请号：US109604
申请日：1998-07-02
申请人： Jacob H. Hall , David L. Henderson , Jeffrey A. Leep
发明人： Jacob H. Hall , David L. Henderson , Jeffrey A. Leep
IPC分类号： F23N5/24 , F23N5/26 , F24H9/20 , G05D23/00
CPC分类号： F23N5/265 , F24H9/2035 , F23N5/24
摘要： A fuel-fired water heater has a series of control and operating components which, with electrical power being supplied to the water heater circuitry via a power switch, are electrically actuatable in a predetermined sequence to supply combustion heat to water contained in a tank portion of the water heater to return the temperature of the water to a heated setpoint temperature in response to the water temperature falling below such setpoint temperature. LED diagnostic indicating lights are wired into the water heater circuitry in a manner such that each indicating light is associated with a different one of the electrically coupled components. As the components are sequentially actuated during a water heating cycle, the LED lights are successively illuminated. If one of the components malfunctions during such heating cycle, one or more of the indicating lights remains unilluminated, with the last illuminated light being indicative of the last component in the sequence which functioned properly, thereby facilitating the ready identification of the component which malfunctioned. The LED indicating lights are supported in a single row on a housing-mounted circuit board to which electrical indicating light leads from the water heater control circuit are connected. One of the LED lights is a power indicating light and, like the other indicating lights, has a resistor in an electrical trace leading to the light. The power indicating light and its associated resistor are physically isolated from the other indicating lights and their associated resistors by an interior housing barrier wall.
摘要翻译：燃料热水器具有一系列的控制和操作部件，其中电力通过电源开关供应给热水器电路，可以按照预定顺序被电致动，以将燃烧热量提供给容纳在罐部分中的水热水器将水的温度恢复到加热的设定点温度，以响应水温低于设定点温度。 LED诊断指示灯以使得每个指示灯与不同的电耦合部件相关联的方式连接到热水器电路中。当在水加热循环期间依次致动部件时，LED灯依次被照亮。如果其中一个部件在这样的加热循环期间发生故障，则一个或多个指示灯保持未点亮，最后一个照明的光指示顺序中的最后一个部件正常工作，从而便于对故障部件进行准备识别。 LED指示灯在与电热指示灯从热水器控制电路连接的外壳安装电路板上的单排中被支撑。其中一个LED灯是一个指示灯的电源，像其他指示灯一样，在电路中有一个电阻通向光。电源指示灯及其相关的电阻器通过内部外壳隔离墙与其他指示灯及其相关联的电阻器物理隔离。

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