Stoves and furnaces – Stoves – Heating
Patent
1981-05-21
1983-06-14
Yeung, James C.
Stoves and furnaces
Stoves
Heating
126290, F24C 114
Patent
active
043877001
ABSTRACT:
A stove having automatic chimney air flow compensation for reductions in air flow to its combustion chamber is disclosed. An increase or decrease in compensatory air flow is dependent upon the movement of ganged dampers. The amount of compensatory chimney air flow is dependent upon the size and/or position of apertures and blocking portions formed respectively in the ganged dampers. The dampers can be configured, as appropriate, and thereby tuned, to be particularly responsive to local conditions.
The stove is provided with a conduit positioned to provide a source of fresh air. The conduit is clamped to the stove to heat the air flowing therein and thereby prevent exhaust gas condensation and creosote buildup when it rises in and from the chimney. One of the ganged dampers is inserted into the conduit and acts, due to the nature of its linkage with the stove damper, to block air flow therein when the linkage with the stove damper, to block air flow therein when the stove damper increases air flow to the combustion chamber and increase conduit air flow when the flow of stove inlet air is reduced. This inverse and automatic damper action makes it easy and efficient for a user to adjust stove combustion rates with significantly reduced concern about chimney fire.
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