Patent ID: 7727294

Claim:
A thin micro reforming apparatus comprising: a substrate having a flow path therein; a fuel inlet portion for introducing fuel into the flow path of the substrate; an evaporator formed in the substrate including a back pressure accommodation part located behind the fuel inlet portion, the back pressure accommodation part accommodating back pressure during the gasification to block the influence on the back pressure to the fuel inlet portion and a gas expansion part formed downstream of the fuel inlet portion, the gas expansion part gasifying the liquid fuel; a reformer having a flow path formed downstream of the evaporator, and formed in one side of the substrate, the reformer reforming fuel into hydrogen gas via endothermic reaction; a CO remover having a flow path formed downstream of the reformer, and formed in the other side of the substrate, the CO remover removing CO gas contained in the hydrogen gas via an exothermic reaction; and a cover for covering an upper part of the substrate to seal the substrate from the external environment, wherein the evaporator is divided into the gas expansion part and the back pressure accommodation part by a plurality of partition walls, and wherein the gas expansion part and the back pressure accommodation part are in communication with each other through a passage formed between the partition walls, the passage is formed larger than the opening of the fuel inlet portion so that when liquid fuel enters the gas expansion part from the fuel inlet portion, the gas fuel is allowed to flow from the expansion part to the back pressure accommodation part, around the liquid fuel.