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    • 3. 发明授权
    • Fuel ignition system control arrangement providing total fuel shutoff
and contact protection
    • 燃油点火系统控制装置提供总燃料关闭和接触保护
    • US4078879A
    • 1978-03-14
    • US693221
    • 1976-06-04
    • Gerald Edward Dietz
    • Gerald Edward Dietz
    • F23Q3/00F23N5/20F23N5/24F23Q9/14F23Q9/08F23N5/00F23Q23/00
    • F23N5/203F23N5/242F23N2027/30F23N2029/00F23N2031/10F23N2031/12
    • A control arrangement for a fuel ignition system to provide an interlock on start-up to prevent energization of fuel valves under certain failure conditions includes a pulse generating circuit operable when enabled to provide pulses for enabling a first switching device which energizes a pilot valve to supply fuel to a fuel outlet and prepares an energizing path for a main valve, and a second switching device enabled by a flame sensing circuit when a flame is established at the outlet to close associated contacts to complete the energizing path for the main valve and to cause the pulse generating circuit to continue to generate pulses for maintaining the first switching device enabled, the pulse generating circuit being inhibited whenever the contacts are closed at start-up, or close after the system is in a lock out state, preventing the enabling of the first switching device to maintain the pilot valve and the main valve deenergized.
    • 一种燃料点火系统的控制装置,用于在启动时提供互锁以防止燃料阀在某些故障条件下的通电,包括脉冲发生电路,当能够提供脉冲以使第一开关装置能够激励先导阀以提供 燃料到燃料出口并且准备用于主阀的通电路径,以及当在出口处建立火焰以闭合相关联的接触以完成主阀的通电路径并且引起 所述脉冲发生电路继续产生用于使所述第一开关器件保持有效的脉冲,所述脉冲发生电路在所述触点在启动时闭合时被禁止,或者在所述系统处于锁定状态之后关闭, 第一开关装置保持先导阀和主阀断电。