Patent ID: 7658892

Claim:
A reformer for a fuel cell, comprising: a heat source adapted to generate heat by combustion of a fuel; a preheating portion arranged at a position to be preheated by heat from the heat source and adapted to mix and preheat a raw material and water; a reforming reaction section with a hollow portion defined by an internal surface, the internal surface having a rugged portion, the rugged portion adapted to be heated by the heat source; and a carbon monoxide processing unit extending from the reforming reaction unit, the hollow portion extending to the carbon monoxide processing unit, the hollow portion being further defined by an internal surface of the carbon monoxide processing unit, wherein the rugged portion further extends to the internal surface of the carbon monoxide processing unit; wherein the rugged portion comprises at least three protrusions affixed to or integral with the internal surface of the reforming reaction section and the internal surface of the carbon monoxide processing unit, the protrusions having differing heights, decreasing from the reforming unit to the carbon monoxide processing unit.