US 4,397,292 AGranted

Circulating air space heater

OwnerFrancis Mitchellinventor

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Abstract

A solid fuel burning modular stove fabricated from a plurality of metal assemblies includes a first assembly provided with a combustion chamber, an air duct at the lower front of the chamber communicating with the ambient air, a louver member inside the air duct varying the degree of admittance of air through the duct, flue pipe means for exhausting combustion products from the stove, a plurality of fire brick lining the floor, rear and side walls. Vertical ducts are positioned along the rear and side walls having inlet openings at their bottom and outlet openings at their tops, heated air rises through the ducts and discharges into the ambient air. A second assembly to be attached to the bottom of the first assembly comprising horizontal channel means in communication with the vertical duct inlets providing a blower to force outside air through the vertical ducts. A third assembly comprising generally horizontal channel means to be attached to the top of the first assembly in communication with the vertical duct outlets for conducting heated air to a reclaimer chamber in heat exchanging relationship with the flue pipe. The blower, and the louver member may be controlled by an electric thermostat providing except for the introduction of fuel a fully automatic forced air heating system.

Claims5

Dependent claims

A stove for burning solid fuel fabricated from a plurality of sheet metal modular assemblies comprising:

(a) a first assembly comprising a combustion chamber with sheet metal top, floor, front, rear and a pair of oppositely disposed side walls, an air duct at the lower front of said first assembly for conducting outside air into said stove, a movable louver member inside said duct varying the degree of admittance of said air through said duct, flue pipe means having one end at a location inside said stove and the other end for exhausting combustion products from said stove,
(a) a plurality of fire bricks lining said floor, said rear, and said side walls,
(c) a plurality of sheet metal spaced vertical ducts positioned along said rear wall and said side walls staggered between said fire bricks lining said rear wall and said side walls extending substantially from the bottom to the top of said rear wall having air inlet openings at the bottom of said vertical ducts to allow air to rise from the bottom through said ducts, and air outlet openings at the top of said vertical ducts to allow said air to discharge into the ambient air,
(d) a second assembly comprising horizontal channel means to be attached to the bottom of said first assembly in communication with said vertical duct inlets, said channel having an inlet provided with blower means for conducting outside air into said vertical ducts,
(e) a pivotally mounted door in the front wall to provide access to the stove for the introduction of wood or other solid fuel.

2 more elements

Dependencies are inferred from the claim text.