To provide a burner for a fuel reformer having improved combustibility.

(1) The burner 10 of the fuel reformer includes an injector 14 for emitting a jet of a liquid fuel in its center, and a combustion air supply port 16 for supplying combustion air in a swirl state from its outer circumference. (2) A heater 26 is arranged downstream of the injector 14. Where a distance between the heater 26 and the injector 14 is LEH, the swirl length of combustion air is LSW, the swirl number is SN, LSWis set to be smaller than LEH, and SNis set to be not smaller than 0.6. (3) Additionally, a surplus hydrogen supply port 17 for supplying surplus reformed hydrogen in a swirl state is arranged on the outer circumference of the injector 14. (4) Combustion air and surplus hydrogen are supplied being offset from the center of the injector 14. (5) In front surface of the combustion air supply port 16, fixed turning blades 25 are arranged. (6) Surplus hydrogen is supplied from the outer circumference side than the combustion air supply port 16.

COPYRIGHT: (C)2005,JPO&NCIPI