| 摘要 |
PURPOSE:To reduce cost of a separator by forming corrugated smooth recessed and projecting portions in a thin steel plate, dividing a large number of grooves in a gas flow direction, and specifying the pitch and height of groove and the thickness of the plate. CONSTITUTION:A plurality sets of smooth and corrugated recess and projecting portions 2 which are divided in plurality from one side to the other are formed on both sides of the center of a thin steel plate 1 with a press. A divided parts 31 located between the recessed and projecting portions 2 of each set is formed so that its both surfaces are flat. A pitch P and the height H of the groove formed by the recessed and projecting portion 2, and the thickness T of the plate are specified to meet the following relations, H/P=0.2-1.7, and T/P=0.06-0.42. Since groove formation in the separator is made easy, cost is reduced. In addition, the total height of the stack can be decreased. |
