Venting system for a fuel-burning heating plant
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United States of America Patent
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Mar 24, 1981
Grant Date -
N/A
app pub date -
Jul 27, 1979
filing date -
Jul 27, 1979
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A venting system for a fuel-burning heating plant, such as a conventional gas-fired furnace. The venting system includes an open-bottomed diverter situated well above the base of the heating plant having vertically disposed inlet and outlet ducts attached to the diverter top. The inlet duct is also attached to the flue outlet of the furnace, while the outlet duct is attached to a chimney flue for expulsion of combustion gases. A heat retention means, such as a damper or a heat-absorbing cone, is located within the inlet duct to permit absorption of heat from passing combustion gases during the combustion cycle and maintain heat in the inlet duct during cessation of the combustion cycle in order to establish a heat lock within the inlet duct and the diverter to prevent the flow of relatively cooler air through the furnace combustion chamber and up the chimney during cessation of the combustion cycle. A similar heat retention means may also be located within the outlet duct.
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