Furnace
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United States of America Patent
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-
Aug 10, 1982
Grant Date -
N/A
app pub date -
Jun 17, 1977
filing date -
Jun 17, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A furnace for the burning of wood in a combustion chamber to generate heat. Primary air is brought in at a grate level of the furnace. Secondary air is brought in through a secondary air inlet, past a preheat chamber and through a secondary air duct to be expelled through holes in the secondary air duct at the top level of flames. The secondary air is preheated in the preheat chamber which is located between the combustion chamber of the furnace and the outside air inlet. A heat exchanger in the top of the oven transfers the heat from the combustion chamber of the furnace to ductwork for distribution.
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