BURNER FLAME MONITOR DEVICE

摘要

PROBLEM TO BE SOLVED: To assuredly decide that all flames are lost and rapidly stop the supply of fuel to each burner if the flameout of all burners should be generated even upon turning on the dummy switch of a corresponding flame detector when the flame detector is adjusted at the time of a test operation. SOLUTION: A flame monitor circuit 6 recognizes not only the presence and absence of the individual flame of a corresponding burner 2 but also the presence and absence of flames of other burners 2 based on a detecting signal 5 from each flame detector 4. When other fames are not recognized even while a dummy switch recognizing the presece of an individual flame irrespective of the presence and absence of the individual flame is turned on relative to a desired flame detector, the flame monitor circuit decides that all flames are lost.