BURNER CONTROLLER AND COMBUSTION CONTROL DEVICE

摘要

PROBLEM TO BE SOLVED: To realize a one rod-type combustion control device capable of accurately determining the presence or non-presence of a flame and being applied also to a high capacity combustion device.SOLUTION: A burner controller [3] of this invention comprises: an ignition circuit [30] in which an ignition device [2] having one electrode rod [4] acting as both a spark rod and a flame rod connected to one end of a secondary-side coil of an ignition transformer is driven to generate a spark at the electrode rod; a flame detection circuit [31] for generating a flame detection signal on the basis of a current flowing at the electrode rod through a secondary-side coil of the ignition transformer; and a control part [32] for controlling the ignition circuit and the flame detection circuit. The control part stops generation of the spark by the ignition circuit before finishing a period [Tp] where supply of fuel [8] to a burner can be carried out when a burner [5] is ignited, and determines the presence or non-presence of a flame on the basis of the flame detection signal by the flame detection circuit before finishing the period after stopping the occurrence of the spark.SELECTED DRAWING: Figure 1