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    • 1. 发明申请
    • DYNAMIC DC BIASING AND LEAKAGE COMPENSATION
    • 动态直流偏置和泄漏补偿
    • US20060257804A1
    • 2006-11-16
    • US10908463
    • 2005-05-12
    • Brent ChianJohn AdamsTimothy NordbergBruce HillPeter Anderson
    • Brent ChianJohn AdamsTimothy NordbergBruce HillPeter Anderson
    • F23N5/20
    • F23N5/123F23N2029/06
    • A system for adjusting a bias voltage of a flame sensing system. The system may use pulse width modulation to adjust the bias voltage. The system may have a flame sensing rod that conveys an electrical equivalent circuit of a flame presence to a detector via low pass filter. An excitation voltage may be conveyed via a DC blocking mechanism to the sensing rod. A pulse width modulation signal may be conveyed via a bias resistor to a node of the low pass filter and the detector. The input of an A/D converter may be that of the detector for flame signals. Also, leakages between the node of the A/D converter connection and the voltage source and/or ground may be detected and compensated. Further, leakage of the DC blocking mechanism may be minimized.
    • 一种用于调节火焰感测系统的偏置电压的系统。 系统可以使用脉冲宽度调制来调整偏置电压。 该系统可以具有火焰传感杆,其通过低通滤波器将火焰存在的电等效电路传送到检测器。 激励电压可以经由直流阻塞机构传送到感测杆。 脉冲宽度调制信号可以经由偏置电阻器传送到低通滤波器和检测器的节点。 A / D转换器的输入可以是用于火焰信号的检测器的输入。 此外,可以检测和补偿A / D转换器连接的节点与电压源和/或接地之间的泄漏。 此外,DC阻断机构的泄漏可能被最小化。
    • 3. 发明申请
    • Water heater performance monitoring system
    • 热水器性能监测系统
    • US20060173653A1
    • 2006-08-03
    • US11048023
    • 2005-01-31
    • Brent ChianBruce HillTimothy Nordberg
    • Brent ChianBruce HillTimothy Nordberg
    • G21C17/00
    • F24H9/2007
    • A water heater performance monitoring device for monitoring whether a water heater is functioning optimally or whether it requires service. The device uses maximum heating rates taken from a plurality of measured heating rates to determine if the performance of the water heater has degraded from a threshold performance level. A water heater performance monitoring device can reduce the number of false alarms that occur regarding the need for water heater service by filtering out temporary factors, lasting less than a time cycle, which affect heating rate of water in the water heater. This can save users time and money by reducing unnecessary water heater inspections.
    • 一种用于监测热水器是否正常运行或是否需要维修的热水器性能监测装置。 该设备使用从多个测量的加热速率获取的最大加热速率来确定热水器的性能是否已经从阈值性能水平降级。 热水器性能监测装置可以通过滤除影响热水器中水的加热速率的暂时性因素,持续时间少于一个时间周期,减少对热水器服务需求发生的虚假警报数量。 这可以通过减少不必要的热水器检查来节省用户的时间和金钱。
    • 4. 发明申请
    • ADAPTIVE SPARK IGNITION AND FLAME SENSING SIGNAL GENERATION SYSTEM
    • 自适应火花点火和火焰感测信号发生系统
    • US20060257805A1
    • 2006-11-16
    • US10908467
    • 2005-05-12
    • Timothy NordbergBrent Chian
    • Timothy NordbergBrent Chian
    • F23N5/00
    • F23N5/123F23N5/203F23N2027/36F23N2029/00Y02T50/677
    • A signal generation system for flame ignition and sensing. The ignition signal generation is adaptive for improving flame ignition while eliminating excess energy usage. High voltage signals for flame sensing may also be provided. If more energy or speed is needed for ignition signal generation, then the flame sensing signal generation portion may be disabled to increase the amount of available energy. Adaptation for ignition signal generation may be guided by the results of flame sensing. The flame sensing voltage may be regulated based on the flame current strength. The flame current may be controlled within an optimum range to reduce rod contamination rate and yet provide reliable flame sensing when the rod contamination built up. The adaptation may be algorithmic-based with the facilitation of a microcontroller. The system may provide the high voltage signals from a low voltage power supply, such as that of 24 VAC.
    • 一种用于火焰点火和感测的信号发生系统。 点火信号产生适应于改善火焰点火,同时消除多余的能量消耗。 还可以提供用于火焰感测的高电压信号。 如果需要更多的能量或速度来产生点火信号,则可以禁用火焰感测信号产生部分以增加可用能量的量。 点火信号产生的适应可以由火焰感测的结果引导。 火焰感应电压可以根据火焰电流强度进行调节。 火焰电流可以控制在最佳范围内以减少棒污染率,并且当杆污染积聚时提供可靠的火焰感测。 适应可以基于以微型计算机为前提的算法。 该系统可以提供来自诸如24VAC的低电压电源的高电压信号。