| 摘要 |
A vane ( 31 ) at the juncture of orthogonal conduits ( 25-28 ) allows flow of air to and from the air inlet/outlet manifold ( 12 ) of a fuel cell stack ( 11 ) when it is disposed in a first position, and totally blocks the conduits ( 25, 26 ) so as to isolate the air flow fields of the fuel cells ( 17, 18 ) when in a position normal to the first position. A vane ( 41 ) can comprise the divider of the air inlet/outlet manifold when in a vertical position, and totally block off the manifold when in a horizontal position. A vane ( 59 ) can align with the divider ( 24 ) of an air inlet/out manifold when in a vertical position, and block the passage between the manifold and conduits ( 44, 46 ) when in a horizontal position. Similar vanes may be used for single-valve selection of flow or containment of fuel reactant gas. |
