Pressure differential slide valve for fuel cell
First Claim
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1. A method comprising:
- supplying hydrogen to a fuel cell in response to power demand;
moving a sliding valve responsive to a pressure differential between a hydrogen supply and ambient to provide an open valve position, the sliding valve including;
a cylindrical inner plate;
a cylindrical outer plate coupled in a coaxial sliding relationship to the cylindrical inner plate;
a plurality of o-rings seated in annular grooves around the cylindrical inner plate, wherein the cylindrical inner plate and cylindrical outer plate are sized to maintain a sealing force against the o-rings; and
moving the sliding valve responsive to the pressure differential to provide a substantially sealed closed valve position.
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Abstract
A power generator includes a fuel container adapted to hold a hydrogen containing fuel. A sliding valve is coupled between a fuel cell and a fuel container. A pressure responsive actuator is coupled to the two stage valve and the fuel container.
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Citations
7 Claims
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1. A method comprising:
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supplying hydrogen to a fuel cell in response to power demand; moving a sliding valve responsive to a pressure differential between a hydrogen supply and ambient to provide an open valve position, the sliding valve including; a cylindrical inner plate; a cylindrical outer plate coupled in a coaxial sliding relationship to the cylindrical inner plate; a plurality of o-rings seated in annular grooves around the cylindrical inner plate, wherein the cylindrical inner plate and cylindrical outer plate are sized to maintain a sealing force against the o-rings; and moving the sliding valve responsive to the pressure differential to provide a substantially sealed closed valve position. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification