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    • 1. 发明授权
    • Safety test circuit for combustion control apparatus
    • 燃烧控制装置的安全测试电路
    • US4127887A
    • 1978-11-28
    • US825725
    • 1977-08-18
    • Toshio TanakaJuichi HondaSadao MimoriKazutoshi Ikegami
    • Toshio TanakaJuichi HondaSadao MimoriKazutoshi Ikegami
    • F23N5/20F23N5/24G01R31/00H02H3/26
    • G01R31/006F23N5/242F23N2027/12F23N2027/16F23N2027/18F23N5/20
    • A safety test circuit for a combustion control apparatus. This safety test circuit is used to check the off-failure of a safety transistor actuating a safety relay which acts to stop the operation of controlled units in the event of mal-combustion or the like, and also to check the on-failure of a control transistor actuating a control relay which controls the controlled units. An operation instruction signal and the collector potential of the safety transistor are applied to a logic circuit including a flip-flop and logic gates so that the off-failure of the safety transistor can be driven to check, utilizing the electrical signal propagation delay time of the elements constituting the logic circuit, before the propagation delay time has elapsed. The logic circuit is also used for similarly checking the on-failure of the control transistor. A check signal may be additionally applied to the logic circuit so that these transistors can be tested during the continuous operation of the combustion control apparatus.
    • 一种用于燃烧控制装置的安全测试电路。 该安全测试电路用于检查致动安全继电器的安全晶体管的失效,该安全继电器用于在发生不良燃烧等情况下停止受控单元的操作,并且还检查一个 控制晶体管驱动控制受控单元的控制继电器。 将操作指令信号和安全晶体管的集电极电位施加到包括触发器和逻辑门的逻辑电路,使得可以驱动安全晶体管的断开故障来检查,利用电信号传播延迟时间 在传播延迟时间过去之前构成逻辑电路的元件。 逻辑电路也用于类似地检查控制晶体管的导通故障。 可以将校验信号额外地施加到逻辑电路,使得可以在燃烧控制装置的连续操作期间对这些晶体管进行测试。
    • 5. 发明授权
    • Burner ignition and control system
    • 燃烧器点火和控制系统
    • US07568909B2
    • 2009-08-04
    • US10997923
    • 2004-11-29
    • Rob MacNuttGary Gunthorpe
    • Rob MacNuttGary Gunthorpe
    • F23N5/00
    • F23N5/00F23N5/265F23N2023/08F23N2023/22F23N2027/02F23N2027/18
    • A battery powered ignition and control system for a gas burner includes circuits for controlling a pilot burner, a main burner, a flame sensor and an igniter. Mechanically latched valves, which require power only to switch between and open and closed state are used to control the pilot and main gas. The circuitry spends a majority of time in a powered down state and draws power only when required to interrogate the state of the flame and to perform an ignition sequence as required, as periodically dictated by a watchdog system. The latching valves are electrically pulsed to change state and thus draw very low average power when called upon. Lithium batteries provide system power for a long duration.
    • 用于气体燃烧器的电池供电点火和控制系统包括用于控制引燃燃烧器,主燃烧器,火焰传感器和点火器的电路。 机械闭锁阀门只需要电力才能切换和打开和关闭状态,用于控制飞行员和主气体。 电路花费大部分时间处于掉电状态,并且仅在需要时询问火焰的状态并根据需要执行点火顺序,如由看门狗系统定期指示的。 闭锁阀被电脉冲以改变状态,从而在被调用时获得非常低的平均功率。 锂电池长时间提供系统电源。
    • 7. 发明授权
    • Self-diagnostic flame rectification sensing circuit and method therefor
    • 自诊断火焰整流感应电路及其方法
    • US5506569A
    • 1996-04-09
    • US251816
    • 1994-05-31
    • Mitchell R. Rowlette
    • Mitchell R. Rowlette
    • F23N5/20F23N5/24F23N5/00
    • F23N5/242F23N5/203F23N2023/08F23N2027/14F23N2027/18F23N2029/00F23N2033/06
    • An electric control is shown for gas furnaces which controls fan motors and ignition controls based on inputs from a room thermostat (32), a high limit control and an ignition control (14) including a gas valve. A flame sense circuit (42, 42') is coupled to a microprocessor (U2) and includes a flameprobe (P1) energized by line power through a capacitor (C3) via a quick connect (QC31). A capacitor (C4) is charged by a 5 volt DC source through resistor (R12) and inputted to an inverter (U3, S2) which provides a low signal to the microprocessor when no flame is present. When a flame is present the capacitor (C4) discharges through the flame causing the inverter to change state providing a high to the microprocessor indicating that a flame is present. A diagnostic network comprising a low leakage diode (CR10) and serially connected resistor (R11) is coupled between the microprocessor (pin 8) and the input of the inverter (U3) so that the operation of the flame sense circuit can be tested. In an alternate embodiment CMOS switches (S1, S2) are used both to verify that the flame sense circuit is properly wired and to simulate a no-flame condition.
    • 对于根据来自室温控器(32),上限控制器和包括气阀的点火控制器(14)的输入来控制风扇电动机和点火控制的燃气炉的电气控制。 火焰感测电路(42,42')耦合到微处理器(U2),并且包括通过快速连接(QC31)通过电容器(C3)的线路电力通电的火焰探测器(P1)。 电容器(C4)由5伏直流电源通过电阻(R12)充电,并输入到逆变器(U3,S2),当逆变器(U3,S2)不存在火焰时,向微处理器提供低信号。 当存在火焰时,电容器(C4)通过火焰放电,导致逆变器改变向微处理器提供高的指示火焰存在的状态。 包括低泄漏二极管(CR10)和串联电阻器(R11)的诊断网络耦合在微处理器(引脚8)和逆变器(U3)的输入端之间,从而可以测试火焰检测电路的操作。 在替代实施例中,CMOS开关(S1,S2)用于验证火焰感测电路是否正确连接并模拟无焰状态。
    • 8. 发明授权
    • Flame ignition and supervision system
    • 火焰点火和监督系统
    • US3847533A
    • 1974-11-12
    • US34044873
    • 1973-03-12
    • KIDDE & CO WALTER
    • RIORDAN W
    • F23N5/12F23N5/20F23N5/24
    • F23N5/203F23N5/123F23N5/20F23N2027/18F23N2027/36F23N2029/12F23N2031/10F23N2031/12
    • Disclosed is a valve control circuit for fuel burners and the like. Energy is received by an energy storage circuit and periodically is rapidly removed therefrom and transferred to a pulse circuit. The pulse circuit, responsive only to pulses, receives the energy pulses on discharge and provides a valve activating signal in response thereto. The system is failsafe inasmuch as component failure prevents the pulses from being supplied to the pulse circuit. Furthermore, limit apparatus prevents sufficient power from being directly supplied from the power source to the valve to cause actuation. Two timers are also provided to cause system lock out in the event of failure to ignite. Either timer is sufficient by itself to cause lock out so that if one of the timers fails, lock out is still achieved.
    • 公开了一种用于燃料燃烧器等的阀控制电路。 能量由能量存储电路接收并且周期性地被快速地从其中移除并被传送到脉冲电路。 仅脉冲响应的脉冲电路在放电时接收能量脉冲,并响应于此激活信号。 该系统是故障安全的,因为组件故障防止脉冲被提供给脉冲电路。 此外,限制装置防止从电源向阀直接供应足够的动力以致致动。 还提供两个计时器,以便在发生故障时引起系统锁定。 定时器本身就足以导致锁定,以便如果其中一个定时器失败,则锁定仍然可以实现。
    • 10. 发明授权
    • Safety device for boiler comprising a time delay protected by an electronic circuit
    • 包括由电子电路保护的时间延迟的锅炉的安全装置
    • US07008217B2
    • 2006-03-07
    • US10482307
    • 2002-05-17
    • Charles Jacobberger
    • Charles Jacobberger
    • F23N1/00
    • F23N5/245F23N5/206F23N2023/22F23N2027/04F23N2027/16F23N2027/18
    • A safety device for an industrial boiler (CHA) including electromechanical relays (REn, RS), which are connected in series in order to form an electromechanical safety chain (CH1), and at least one shunt relay (RTn) which is normally open and mounted in parallel to one of the electromechanical relays (REN). The shunt relay is controlled by an automaton (AP1) so that it is closed during a time delay. The shunt relay (RTn) is provided with a contact that is connected to an electronic circuit (CEn) and said electronic circuit (CEn) opens an electromechanical relay (RS) which is mounted in series in the safety chain when the shunt relay (RTn) is closed for longer than the time delay. Given the arrangement, in the event of an automaton failure, the time delay is ensured by the electronic circuit so that a satisfactory level of safety is guaranteed in relation to the installation.
    • 一种用于工业锅炉(CHA)的安全装置,其包括为了形成机电安全链(CH 1)而串联连接的机电继电器(RE ,RS),以及至少一个分流 继电器(RT< N>),其常开并并联安装在机电继电器之一(RE SUB)中。 分励继电器由自动机(AP 1)控制,以便在延时期间关闭。 分路继电器(RT< n>)具有连接到电子电路(CE& n>)和所述电子电路(CE< SUB> >)打开机电继电器(RS),当分路继电器(RT N>)闭合长于时间延迟时,机电继电器(RS)串联安装在安全链中。 考虑到这种安排,在自动机故障的情况下,通过电子电路确保时间延迟,从而相对于安装来保证令人满意的安全等级。