Fuel burner control system

Patent · Tue May 05 04:00:00 EDT 1987

OSTI ID:6361769

Riordan, W J

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; EDB-87-111207; NOV-87-061507
• Patent Number(s): US 4662838
• OSTI ID: 6361769
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
421000* -- Engineering-- Combustion Systems
ALTERNATING CURRENT
BURNERS
CONDUCTOR DEVICES
CONNECTORS
CONTROL EQUIPMENT
CONTROL SYSTEMS
CURRENTS
DIRECT ENERGY CONVERTERS
ELECTRIC CURRENTS
ELECTRIC HEATING
ELECTRICAL EQUIPMENT
ELECTRONIC CIRCUITS
EQUIPMENT
FLAMES
FLOW REGULATORS
FUEL SYSTEMS
HEATERS
HEATING
IGNITION SYSTEMS
RESISTANCE HEATING
SIGNALS
START-UP
SWITCHES
THERMOELECTRIC HEATERS
VALVES