Patent ID: 8652693

Claim:
A cell stack device comprising: a cell stack including a plurality of column-shaped fuel cells arranged in an upright position and electrically connected to each other, the fuel cells including gas passages provided therein, the cell stack including a central section of fuel cells; a manifold to which bottom ends of the fuel cells are fixed and which is configured to supply fuel gas to the fuel cells; a reformer disposed above the cell stack, the reformer comprising a tubular container that extends in a longitudinal direction and comprises two ends and a central section in the longitudinal direction between the two ends; a vaporization part provided with a supply port through which raw fuel is supplied, the vaporization part being provided at the central section of the tubular container; and reforming parts separated from each other, each reforming part provided at each end of the two ends, each reforming part containing reforming catalyst that reforms the raw fuel that flows into the reforming part from the vaporization part into fuel gas, each reforming part provided with a fuel-gas supply port through which the fuel gas is discharged, wherein the supply port is located at the central section of the tubular container; and fuel-gas supply pipes provided at both ends of the manifold, the fuel-gas supply pipes being connected to the respective fuel-gas supply ports, wherein the fuel cells are arranged in the longitudinal direction and the vaporization part of the reformer positioned above the central section of fuel cells of the cell stack.