Fireplace flue heat exchanger and control

Patent · Tue Jun 02 04:00:00 EDT 1981

OSTI ID:5980633

Mitchelson, M M

An open sided firebox is provided including an upwardly tapering upper bonnet portion. The lower end of an upstanding flue pipe opens downwardly into the interior of the bonnet portion and the upper end portion of the flue pipe is open for exhausting flue gases above the roof line of a building in which the firebox is disposed. A multi-walled outer housing encloses the firebox and includes a front wall having an opening therein through which the open side of the firebox opens. The upper portion of the housing tapers upwardly in cross section and encloses the bonnet. An upstanding flue liner is loosely disposed about the flue pipe and includes a lower end opening downwardly into the upper portion of the housing and an upper end sealed about the upper end of the flue pipe. Air pump structure is provided for pumping ambient air into the upper portion of the interior of the liner exteriorly of the flue pipe and at least one of the walls of the housing has outlet openings therein for exhausting heated air into a room of a building including a fireplace structure in which the housing is disposed, the flue liner passing upwardly through a flue structure provided therefor in the building to a point above the roof line thereof. In addition, second air pump structure is provided for pumping air upwardly through the flue pipe.

• Assignee: IFI; EDB-82-002701
• Patent Number(s): US 4270513
• OSTI ID: 5980633
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320101* -- Energy Conservation
Consumption
& Utilization-- Residential Buildings-- (-1987)
AIR FLOW
DESIGN
ENERGY RECOVERY
EQUIPMENT
FIREPLACES
FLUE GAS
FLUID FLOW
GAS FLOW
GASEOUS WASTES
HEAT EXCHANGERS
HEAT RECOVERY
HEAT RECOVERY EQUIPMENT
HEAT SOURCES
PIPES
RECOVERY
WASTES