Burner for a reformer of a fuel cell system, and reformer and fuel cell system with the same

The present invention relates to a fuel cell system and, more particularly, to the structure of a burner assembly for the reformer of a fuel cell system. The reformer comprising (i) a burner assembly for generating thermal energy through an oxidation catalytic reaction of liquid fuel and air, the burner assembly including a second body being loaded with an oxidation catalyst; and (ii) a reforming reactor using the thermal energy of the burner assembly for generating hydrogen from liquid fuel and water through a reforming catalytic reaction, the reforming reactor including a first body being loaded with a reforming catalyst. The reformer is being characterized in that the burner assembly is having a heating member partially embedded within the oxidation catalyst.