Patent ID: 8777608
Filing Date: 2014-07-15
Classification: F23N

Abstract:
1. A gas ignition system including a gas burner 40 ; a gas control system 4 , 5 , including a controllable valve arrangement 5 , 6 responsive to an initiation event to deliver gas to the gas burner 40 and control means 4 responsive to the initiation event to provide a first control signal to the controllable valve arrangement 5 , 6 to maintain the controllable valve arrangement 5 , 6 open for a first predetermined time period after the initiation event; an ignition source 3 ; an ignition source controller 2 responsive to the initiation event to cause the ignition source 3 to ignite the gas delivered to the gas burner 40 ; and a thermocouple 42 proximate to the gas burner 40 and connected to the controllable valve arrangement 5 , 6 to maintain the controllable valve arrangement 5 , 6 open while the thermocouple 42 reaches operating temperature; wherein the ignition source 3 is responsive to a second control signal of the ignition source controller 2 to maintain ignition operation for a second predetermined time period different from the first predetermined time period.