COMBUSTION CONTROL SYSTEM FOR BAKING FURNACE

PROBLEM TO BE SOLVED: To widen the regulation width of the amount of fuel gas. SOLUTION: A combustion control system is constituted of a plurality of gas burners 1, 1, arranged in a baking furnace, gas amount regulating governors 3, arranged on the half way of gas supplying pipes 2 extended from respective gas burners 1, branch air pipelines 4, connecting the back pressure chambers 3a of respective gas amount regulating governors 3 and an assembled air pipeline 19, a back pressure setter 16, connected to the assembled air pipeline 19, and a controller 7, detecting a furnace temperature and operating the back pressure setter 16. In this case, the back pressure setter 16 operates a pressure setter 29, provided in the variable governor 17, by the controller 7 employing the variable governor 17, arranged on the half way of the assembled air pipeline 19, and an air releaser 18, connected to the assembled air pipeline 19 at the downstream side of the variable governor 17.