Start-up/shut-down for a hydrogen gas burner
Patent 4465455 Issued on August 14, 1984. Estimated Expiration Date: 
September 24, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 24, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2954080 3086583 Fuel supply apparatus for internal combustion engines Glow coil ignition system with flame sensing Patent #: 4056348 InventorApplicationNo. 06/422875 filed on 09/24/1982US Classes:431/27, Providing repeated start attempts prior to shutdown upon failure to establish combustion431/66, Sensor of electrical condition or temperature of electrical igniter controls fuel feed431/70, Recycle through proving period on sensing of failure of established flame431/78By electrical control circuitExaminersPrimary: Barrett, Glenn T.Attorney, Agent or FirmInternational ClassF23N 5/00 (20060101)AbstractSystem for flame start-up/shut-down for a hydrogen gas mixture burner. An electrical probe igniter positioned adjacent the gas port outlet. On demand the igniter is actuated to heat and electrically heat a thermal switch. Responsive electronic controls actuate the appropriate valves and circuits for operational start-up. Upon the ignition of the generated hydrogen gas mixture, a second thermal probe is heated by the flame to deactivate the ignition and start-up circuits. After demand the second thermal probe cools and the circuit is restored for start-up again. A safety probe positioned in the flame is quiescent. In the event of demand time shut-down, the safety probe will activate the circuits for restart. If failure to start-up continues for a predetermined time, the safety probe circuit will effect permanent shut-down.Field of SearchProviding repeated start attempts prior to shutdown upon failure to establish combustionIgniter deenergization responsive to first burner ignition Sensor of electrical condition or temperature of electrical igniter controls fuel feed Igniter heat up and fuel feed sequence controlled by timer or retarder Shutdown by sensed absence of flame in proving period Recycle through proving period on sensing of failure of established flame Igniter cut off when flame establishment proved Of igniter and feed controlled sequence Combustion zone sensor controls igniter | |
