Control system for fluid fuel burners

Claim 1

A FLUID FUEL BURNER CONTROL SYSTEM COMPRISING: FLUID NOZZLE MEANS FOR INTRODUCING FLUID TO BE BURNED INTO A COMBUSTION CHAMBER; ELECTRICALLY ACTUATED VALVE MEANS FOR CONNECTING SAID NOZZLE MEANS TO A FLUID FUEL SUPPLY LINE; ELECTRICALLY ENERGIZED IGNITION MEANS FOR IGNITING SAID FLUID IN SAID CHAMBER; ELECTRICALLY ENERGIZED BLOWER MEANS FOR SUPPLYING COMBUSTION AIR TO SAID CHAMBER; FIRST MEANS FOR SELECTIVELY ENERGIZING SAID BLOWER MEANS; SECOND MEANS FOR ENERGIZING SAID VALVE MEANS AND SAID IGNITION MEANS A FIRST PREDETERMINED TIME AFTER ENERGIZATION OF SAID BLOWER MEANS WHEREBY SAID BLOWER MEANS PREPURGES SAID CHAMBER FOR SAID FIRST TIME PRIOR TO INTRODUCTION AND IGNITION OF FLUID THEREIN; MEANS FOR DISABLING SAID SECOND ENERGIZING MEANS A SECOND PREDETERMINED TIME AFTER SAID FIRST PREDETERMINED TIME IN RESPONSE TO SAID DETECTING MEANS THEREBY TO DE-ENERGIZE SAID VALVE MEANS AND IGNITION MEANS WHEREBY SAID BLOWER MEANS POST-PURGES SAID CHAMBER FOLLOWING SAID DE-ENERGIZATION; AND MEANS FOR DETECTING THE PRESENCE OF FLAME IN SAID CHAMBER AND INCLUDING MEANS FOR OVERRIDING SAID DISABLING MEANS WHEREBY SAID VALVE MEANS AND IGNITION MEANS REMAIN ENERGIZED AFTER SAID SECOND TIME ONLY IF FLAME IS ESTABLISHED IN SAID CHAMBER.