Automatically controlled outdoor pelletized bio-fuel-burning hydronic heater
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United States of America Patent
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Sep 6, 2011
Grant Date -
Jan 29, 2009
app pub date -
Jul 16, 2008
filing date -
Jul 18, 2007
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A heating system has a heating unit with a combustion chamber for burning wood pellets or other pelletized fuel. The heating unit is controlled by a process control module that automatically keeps all operating functions within predetermined limits for safe, efficient and easy operation. The unit also includes a combustion air distribution assembly with a stir shaft that rotates within the combustion chamber and introduces combustion air through orifices along the length of the shaft to enhance fuel combustion. A thermo cycle plumbing assembly serves as a safety feature by preventing overheating in the event of a power failure or pump failure. Also included in the unit is a removable insulated firebox burn chamber that provides a high temperature combustion atmosphere and a heat/particulate recovery module which provides maximum heating efficiency and reduces emissions, meeting EPA requirements and contributing to a cleaner environment.
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