초록 ▼

An oven burner control system having a manual rotary valve controlling gas flow to main and pilot burners and a solenoid operated valve controlling flow to the main burner, control circuit means embodying spark ignition means to ignite the pilot, means responsive to conduction through pilot flame to

An oven burner control system having a manual rotary valve controlling gas flow to main and pilot burners and a solenoid operated valve controlling flow to the main burner, control circuit means embodying spark ignition means to ignite the pilot, means responsive to conduction through pilot flame to cut off spark ignition and permit operation of the solenoid valve, and variable resistance means responsive to oven temperature effecting cyclic operation of the solenoid valve. A control knob rotating with the manual valve varies the control point of said temperature variable resistance means and actuates a line switch to connect and disconnect the control circuit with a power source.

대표청구항 ▼

In a burner control system, a pilot burner, a main burner, an electrical power source, electrically operated means operative when energized to cause fuel to be supplied to said main burner, circuit means including controlled solid state switching means connecting said electrically operated means acr

In a burner control system, a pilot burner, a main burner, an electrical power source, electrically operated means operative when energized to cause fuel to be supplied to said main burner, circuit means including controlled solid state switching means connecting said electrically operated means across said power source, a gating circuit for said switching means connecting one side of said power source to the controlling electrode of said switching means, said gating circuit including first and second controlled solid state switching means, circuit means responsive to the existence of pilot flame operative to effect conduction of said first switching means, and temperature responsive circuit means operative to effect on and off conduction of said second switching means, said temperature responsive means comprising: temperature variable resistance means responsive to change in ambient temperature of a space heated by said main burner, circuit means connecting said resistance means across said power source and including means operative to apply a predetermined voltage across said resistance means, and means connecting the control electrode of said second switching means to one side of said resistance means.