| 摘要 |
PROBLEM TO BE SOLVED: To provide a burner capable of surely detecting presence or absence of flame by an optical flame detector regardless of a condition in a furnace such as generation of white fuming, powder dust, steam and an oxidized gas, and to provide a combustion device comprising the burner and capable of being stably operated for a long period. SOLUTION: This burner 2 has a burner inner cylinder 2a for supplying fuel and a burner outer cylinder 2b for supplying air for combustion, and the optical flame detector 6 is mounted at a rear end side in the burner outer cylinder 2b, for detecting the presence or absence of the flame 5 of the burner 2. When an accidental fire detection signal is transmitted from the optical flame detector 6 to a control device 8, a cut-off signal is output, the fuel supply pipe 3 is closed by a solenoid cutoff valve 7, and the fuel supply to the burner 2 is cut off. COPYRIGHT: (C)2007,JPO&INPIT
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