Self-powered intermittent ignition and control system for gas combustion appliances

摘要: A self-powered control system for a gas-fired appliance having pilot burner and main includes an emissive surface in the flame of photovoltaic device irradiation from providing electrical power system. Two normally closed electromagnetic latching valves are arranged series between source fuel gas with connection to two valves. The first valve is latched open when irradiated by unlatched close not so irradiated. second burning. double acting solenoid or like used sequentially opening lighting burners. safe, reliable thereby provided without external power. Similar principles powering safety flue damper air flow fan.