Spark ignition system with positive suppression of spark when pilot flame is sensed

Patent · Tue Aug 25 00:00:00 EDT 1987

OSTI ID:6086444

Gann, R A

This patent describes a spark ignition system comprising an ac voltage source and a thermostat to call for heat by passing the ac voltage from the source, a main burner, a main valve responsive to ac voltage for admitting gas fuel to the main burner, a pilot burner, a pilot valve responsive to the ac voltage passed by the thermostat to admit gas fuel to the pilot burner, a flame sensor to detect a pilot flame, means responsive to the flame sensor for producing a signal when flame is being sensed, a gated spark generator energized by the voltage source passed by the thermostat, and an electrode adjacent the pilot burner connected to the spark generator to emit a spark.

• Assignee: ITT Corp., New York, NY
• Patent Number(s): US 4689006
• OSTI ID: 6086444
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
421000* -- Engineering-- Combustion Systems
ALTERNATING CURRENT
BURNERS
CAPACITORS
CONTROL EQUIPMENT
CURRENTS
ELECTRIC CURRENTS
ELECTRIC DISCHARGES
ELECTRIC POTENTIAL
ELECTRIC SPARKS
ELECTRICAL EQUIPMENT
ELECTRODES
ELECTRONIC CIRCUITS
EQUIPMENT
FLAME PROPAGATION
FLAMES
FLOW REGULATORS
GAS BURNERS
GATING CIRCUITS
IGNITION SYSTEMS
MEASURING INSTRUMENTS
MONITORS
RECTIFIERS
RESISTORS
SIGNALS
SWITCHES
THERMOSTATS
TIMING CIRCUITS
VALVES