| 摘要 |
PURPOSE:To simplify the structure of a layer-built fuel cell, make it small and increase its performance by supplying and exhausting a fuel gas and an oxidant gas through four gas inlet and outlet nozzles so that these gases flow in counter directions in the flow path unit. CONSTITUTION:A mainfold for gas supply and exhaust is formed by stacking flow path units 14. As the result, the size of a layer-built fuel cell is reduced by concentrating supply and exhaust holes in one section and the space for the fuel cell is reduced. Each flow path unit 14 is formed by providing flow paths on the upper and the lower ends of a diaphragm having four symmetrically arranged holes in its periphery and then providing electrode plates on the flow paths in such a manner as to cause the plates to be continuous with the diaphragm. A fuel gas and an oxidant gas are supplied and exhausted through four gas inlet and outlet nozzles so that these gases flow in counter directions in the flow path unit. Owing to the above constitution of each flow path unit 14, gases are homogeneously supplied from the manifold into unit cells. By the means mentioned above, it is possible to simplify the structure of a layer-built fuel cell, make it small and increase its performance. |
