Condensing water heater
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United States of America Patent
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Aug 9, 2011
Grant Date -
Dec 10, 2009
app pub date -
Jun 6, 2008
filing date -
Jun 6, 2008
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A flue system is provided for a water heater having improved heat exchange efficiency. The flue system includes an upstream heat exchange portion providing a first pass for heat exchange with water in the water heater. The flue system further includes a downstream heat exchange portion providing a second pass for heat exchange with water in the water heater and a blower positioned between the upstream heat exchange portion and the downstream heat exchange portion. The blower is configured to urge combustion products from the upstream heat exchange portion to the downstream heat exchange portion.
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