| 摘要 |
PURPOSE:To prevent the corrosion of pipelines caused by an electrolyte by locating a cooling water inlet pipeline and a cooling water outlet pipeline on gas return side stacked surface where no manifold is mounted. CONSTITUTION:A fuel gas return passage 16 is arranged at a nearly right angle to a fuel gas going passage and a fuel gas return passage so that a fuel gas can return on an anode 2 substrate. A cooling water pipe 11 and a cooling water outlet pipe 12 of a cooling pipe 10 which are embedded in a cooling plate 9 are located on a fuel gas return side stacked surface. Since the pipelines are located outside a manifold, the corrosion of the pipeline caused by a phosphoric acid electrolyte can be prevented. Even if the cooling water leaks from cooling water pipeline joints, that has practically no effect on the cells. Therefore, a fuel cell having high reliability can be obtained. |
