Patent ID: 7981373

Claim:
A reaction device comprising: a carbon monoxide remover to remove carbon monoxide; and a vaporizer to vaporize fuel; wherein the carbon monoxide remover comprises a plurality of stacked plate members, including a first group of stacked plate members and a second group of stacked plate members; wherein the vaporizer comprises a cylinder section inserted into the carbon monoxide remover in a direction substantially perpendicular to the plurality of stacked plate members, and the cylinder section is filled with a liquid absorbing material which absorbs liquid; wherein the cylinder section has an outlet provided at a first end of the cylinder section, and an inlet provided at a second end of the cylinder section; wherein the cylinder section extends into the inside of the carbon monoxide remover through only the first group of stacked plate members such that the outlet at the first end of the cylinder section is provided inside the carbon monoxide remover, and wherein the inlet at the second end of the cylinder section is provided outside the carbon monoxide remover.