Single valve fuel cell stack gas flow and containment

Details Single valve fuel cell stack gas flow and containment Single valve fuel cell stack gas flow and containment

2005-11-01

2005-11-01

Fox, John (Department: 3753)

Fluid handling

Systems

Multi-way valve unit

C429S010000, C429S006000

Reexamination Certificate

active

06959730

ABSTRACT:
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.

REFERENCES:
patent: 4200682 (1980-04-01), Sederquist
patent: 4702269 (1987-10-01), Schuler
patent: 6148613 (2000-11-01), Klopp et al.
patent: 6242125 (2001-06-01), Eidler et al.
patent: 6455185 (2002-09-01), Bircann et al.
patent: 6830844 (2004-12-01), Keegan
patent: 6911277 (2005-06-01), Skala et al.

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