Fuel burner control system
A fuel burner control system is described comprising: valve means for controlling the flow of fuel to a burner; a resistive heater element connected between first and second terminals and disposed for igniting fuel emanating from the burner; isolation transformer means comprising a heater secondary winding connected to the first and second terminals and adapted to provide heating current to the heater element; start-up means for opening the valve means to provide fuel to the burner for ignition by the heater element; flame sensing circuit means; coupling means forming a connection between the heater element and the flame sensing circuit; detector circuit means for detecting the flow between the electrode means and the heater element of current rectified by flame in the zone, and producing in response an output signal; electrical switch means connected between the heater element and the heater secondary winding; and valve control circuit means for maintaining the valve means open in response to the output signal.
- Assignee:
- NOV; NOV-87-061507; EDB-87-111207
- Patent Number(s):
- US 4662838
- OSTI ID:
- 6361769
- Resource Relation:
- Patent File Date: Filed date 28 Jan 1985
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
BURNERS
CONTROL SYSTEMS
FUEL SYSTEMS
VALVES
ALTERNATING CURRENT
CONNECTORS
ELECTRONIC CIRCUITS
FLAMES
IGNITION SYSTEMS
RESISTANCE HEATING
SIGNALS
START-UP
SWITCHES
THERMOELECTRIC HEATERS
CONDUCTOR DEVICES
CONTROL EQUIPMENT
CURRENTS
DIRECT ENERGY CONVERTERS
ELECTRIC CURRENTS
ELECTRIC HEATING
ELECTRICAL EQUIPMENT
EQUIPMENT
FLOW REGULATORS
HEATERS
HEATING
421000* - Engineering- Combustion Systems