Burner ignition system

Combustion – Heated line section feeds flame holder – Unheated oxidizer supply to line between heated section and...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

431264, F23Q 300

Patent

active

039492737

ABSTRACT:
A burner ignition circuit produces high frequency sparks between a pair of spaced electrodes connected to opposite sides of a secondary winding of a transformer in response to the repetitive discharge of a capacitor through the primary winding under the control of an SCR powered by a full wave rectifier such that sparks are produced throughout both half waves of AC power. The discharge capacitor is primarily charged from the power supply through a current limiting resistor. The turn-on time of the SCR is minimized by a trigger circuit including a diac which discharges another capacitor into the gate of the SCR when the voltage thereacross exceeds a selected value. Circuitry including a diode connected between the capacitor and the primary winding is provided to prevent LC oscillation between the discharge capacitor and the primary winding of undesirable residual energy stored in the inductance of the primary winding immediately following each turn-off of the SCR. In one embodiment, the diode is connected to the capacitor through the current limiting resistor and this undesirable oscillating energy is used to provide a further source of charging current for the discharge capacitor. In another embodiment, a diode and resistor are connected in a closed loop with the primary winding, and the residual energy is dissipated by the resistor.

REFERENCES:
patent: 3369151 (1968-02-01), Minks
patent: 3510725 (1970-05-01), Tyler
patent: 3556706 (1971-01-01), Campbell
patent: 3681001 (1972-08-01), Potts
patent: 3710192 (1973-01-01), Budlane
patent: 3849670 (1974-11-01), Lourigan

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Burner ignition system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Burner ignition system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Burner ignition system will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1578840

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.