Patent ID: 8883362

Claim:
A fuel cell system comprising: a fuel cell module for generating electrical energy by electrochemical reactions of a fuel gas and an oxygen-containing gas; an oxygen-containing gas supply apparatus for supplying the oxygen-containing gas to the fuel cell module; a power converter for converting direct current electrical energy generated in the fuel cell module to electrical energy according to requirements specification; a control device for controlling the amount of electrical energy generated in the fuel cell module; and a casing containing at least the fuel cell module, the oxygen-containing gas supply apparatus, the power converter, and the control device, wherein the casing is divided, by a plurality of inner partition walls, into a module section where the fuel cell module is provided, a fluid supply section where the oxygen-containing gas supply apparatus is provided, and an electrical equipment section where the power converter and the control device are provided; the plurality of inner partition walls include a first inner partition wall and a second inner partition wall; the electrical equipment section has a first air intake port for sucking the oxygen-containing gas from the outside of the casing into the electrical equipment section; the fluid supply section has a second air intake port for sucking the oxygen-containing gas sucked through the first air intake port, into the oxygen-containing gas supply apparatus; the casing contains therein a detour channel for preventing the oxygen-containing gas from flowing straight from the first air intake port to the second air intake port; the detour channel is formed between the first inner partition wall and the second inner partition wall; the first inner partition wall is provided adjacent to at least the electrical equipment section or the fluid supply section; the space in the casing is divided into the electrical equipment section or the fluid supply section and the module section by the second inner partition wall, and the distance L 1 between the second inner partition wall and one wall surface of the first inner partition wall is smaller than the distance L 2 between a wall forming the electrical equipment section or the fluid supply section, the wall being positioned on a side opposite to the module section, and the other wall surface of the first inner partition wall, the distance L 1 between the second inner partition wall and one surface of the first inner partition wall forms an opening of the detour channel.