To provide a burner for reforming device that can more extensively and efficiently impart combustion and heating to a reforming catalyst while preventing backfire.
Combustion air is supplied to an air chamber 12 between the outer casing 23 of a burner case 2 and a burner cover 4. After a city gas and an un-reacted exhaust gas discharged from a fuel cell are joined and mixed together in a joining section 305, the mixed gas is supplied to a branching pipe 8 as a fuel gas. When the air passes through a center throttling passage 61, the fuel gas is mixed in the air from a first exhaust nozzle provided below the branching pipe 8 and the mixture is made to flow to a first thin fuel mixing chamber 10a. A chin fuel mixed gas passed through a second buffle plate 7 is supplied to the inner peripheral-side extent of a burner port section 31 through a second thin fuel mixing chamber 10b and each communicative pipe 5 and bunt by means of thin fuel flames. A thick fuel mixed gas is produced by further mixing the fuel gas in a thin fuel mixed gas passing through a center hole 71, supplied to the outer peripheral-side extent of the burner port section 31, and burnt by thick fuel flames. The heat of a burner plate 3 heated by the heat radiated from the flames is liberated to the mixing chambers by transmitting the heat to the burner case 2 and each communicative pipe 5. The prevention of the burner plate from being over-heated is promoted by cooling the outer casing 23 of the case 2 with the air supplied to the air chamber 12.
FUJIO AKIRA
KISHIO KOJI
OWATARI HIROKAZU
MORIMOTO RYO
UEDA HIDEO
WAKATA TAKESHI
YOSHIMURA MASAYA
NORITZ CORP