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US 4,232,653 AGranted
Wood-burning furnace
OwnerJames H. Otterpohlinventor
Life of this patent
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Abstract
A wood-burning furnace including a combustion chamber having a novel combustion air distribution system including jets whereby air is delivered only to a limited portion of the area of the fire bed, and whereby clogging of the jets by the large quantities of wood ash is prevented, the combustion air being delivered by a thermostatically controlled blower and damper system such that the heat delivered by the furnace may be controlled and regulated with substantially the same degree of accuracy as that obtainable with gaseous and liquid fuels.
Claims9
A wood-burning furnace comprising:
- a. a furnace body providing a combustion chamber for receiving wood to be burned,
- b. an open-work grate forming the floor of said combustion chamber for supporting said wood,
- c. an ash pit disposed beneath said combustion chamber and communicating therewith through said grate,
- d. air supply means operable to supply combustion air to said ash pit, beneath said grate, said combustion chamber and ash pit being otherwise sealed against the entry of air, and
- e. thermostatically actuated control means, responsive to the air temperature in a comfort zone to be heated by said furnace, to regulate said air supply means to supply air at a rate sufficient to support full combustion of said wood when said control means calls for heat, and to regulate said air supply means to supply air at a rate sufficient only to maintain combustion of said wood at a minimum rate when said control means does not call for heat.
2 more elements
Dependencies are inferred from the claim text.