F - Mech Eng,Light,Heat,Weapons – 23 – D
Patent
F - Mech Eng,Light,Heat,Weapons
23
D
F23D 11/42 (2006.01) F23N 5/20 (2006.01) F23Q 7/24 (2006.01) F23N 5/08 (2006.01)
Patent
CA 2184532
A fuel oil burner utilizing a hot surface ignition with an ignitor that is fully sintered and has essentially no porosity, a circuit for applying AC line voltage to the ignitor and to a blower motor, an AC-to-DC converter for providing twelve volts DC for operation of a control circuit that has a first time constant circuit for preheating the ignitor and maintaining the ignitor at an ignition temperature for a predetermined ignition trial period of time, a second time constant circuit for starting the blower motor and providing fuel to the combustion chamber for a predetermined time concurrent with the ignition trial period, and a third time constant circuit that either maintains the fan blower in its energized state if a flame of sufficient magnitude and frequency is detected and for de-energizing the blower motor if the flame is not detected in less than one second after the ignitor is de-energized. A lock- out circuit is provided such that if no flame is detected, the unit cannot be restarted without first removing power and then reapplying power to the unit.
Desa Ip Llc
Kirby Eades Gale Baker
Mccoy Hugh W.
LandOfFree
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