High efficiency solid fuel burning stove

Patent · Tue Aug 15 04:00:00 EDT 1989

OSTI ID:5445359

Ferguson, R W; Andors, D K

This patent describes a heating apparatus for burning solid fuels. It comprises a frame assembly enclosing a primary combustion chamber for burning a supply of solid fuel contained therein, the frame assembly including a front wall, two side walls, a rear wall, a top and a bottom; a grate for carrying a supply of solid fuel contained within the primary combustion chamber; and a secondary combustion chamber in gaseous communication with the primary combustion chamber for removal of pollutants from exhaust gases exiting the primary combustion chamber. The secondary combustion chamber comprising: an entrance orifice disposed in the selected one of the walls at a bottom end thereof closely adjacent the grate, whereby the entrance orifice may be covered by charcoal during operation of the apparatus whereby exhaust gases exiting the primary combustion chamber into the secondary chamber pass through charcoal; means for metering secondary combustion air containing oxygen into the entrance orifice for mixing with exhaust gases exiting from the primary combustion chamber; baffles arranged to enhance mixing of the combustion gases with secondary air to promote the more complete burning of pollutants. Each of the baffles comprising a generally vertically oriented lower portion and an upper portion, the lower portions of the baffles being generally parallel to one another and the upper portions of the baffles having surfaces which are non-parallel and converging with respect to one another for causing convergence of exhaust gases and secondary combustion air; and means for venting the exhaust gases from the secondary combustion chamber to an exhaust pipe.

• Assignee: Vermont Castings, Inc., Randolph, VT
• Patent Number(s): US 4856491
• Application Number: PPN: US 7173236A
• OSTI ID: 5445359
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320106* -- Energy Conservation
Consumption
& Utilization-- Building Equipment-- (1987-)
APPLIANCES
COMBUSTION CHAMBERS
DESIGN
EXHAUST GASES
FLUIDS
FUELS
GASEOUS WASTES
GASES
SOLID FUELS
STOVES
WASTES