Arrangement and method for continuously supplying electric power to a field device in a technical system
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United States of America Patent
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Issued Date -
Jul 27, 2006
app pub date -
Mar 12, 2003
filing date -
Mar 12, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An arrangement is described for supplying electrical power to a field device in a process installation which is equipped with a wire-free communication interface without the use of wires. At least one fuel cell having a membrane/electrode block and a fuel tank as well as an electrical energy store are integrated in a housing in the field device, with the fuel cell being equipped with an oxygen reservoir which provides the oxygen that is required for production of electrical energy by oxidation of the fuel in the membrane/electrode block. In addition, the fuel cell is equipped with a water reservoir unit which holds the water which is created during the production of electrical power in the membrane/electrode block by oxidation of the fuel with the oxygen. The fuel cell together with the membrane/electrode block, the fuel tank, the oxygen reservoir and the water reservoir unit form a modular, closed system.
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