Storage-type water heater having tank condition monitoring features
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United States of America Patent
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Nov 29, 2011
Grant Date -
Mar 5, 2009
app pub date -
Jan 29, 2008
filing date -
Aug 28, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
Methods and systems for evaluating the condition of a water tank having a powered anode protection system. The water heater includes a storage tank to hold water, a powered anode, and a control circuit. The control circuit includes a variable voltage supply, a voltage sensor, and a current sensor. The control circuit is configured to compare a measured parameter to a threshold. In some constructions, the threshold is indicative of a condition of the storage tank at which the powered anode is no longer able to protect the storage tank from corrosion. In other constructions, the threshold is predicative of a potential failure of the storage tank caused by corrosion. In some constructions, the control circuit is configured to estimate a time remaining until the predicted failure of the storage tank.
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Family
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Cited Art Landscape
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