Auxiliary air heater for fireplaces

Details Auxiliary air heater for fireplaces Auxiliary air heater for fireplaces

1977-11-15

1980-04-01

Herrmann, Allan D.

Heating systems

Air

126121, 126122, 126165, 126288, 236 11, F24H 302, F24D 502, F24B 704

Patent

active

041957784

ABSTRACT:
There is disclosed an air-to-air heat exchanger which is positioned in a fireplace. The heat exchanger comprises a grate structure on which logs are burned. Ambient air is circulated through the heat exchanger and is heated. Hot air exiting from the heat exchanger is delivered into a metal conduit extending vertically into the chimney. An opening is formed in the chimney wall in the attic of the building and hot air is delivered into ductwork in the building attic. A damper is provided in the fireplace which seals about the conduit extending vertically into the chimney in the closed position of the damper. Air flow through the conduit and heat exchanger may be reversed.

REFERENCES:
patent: 1167008 (1916-01-01), Murray
patent: 1415345 (1922-05-01), Hatchett
patent: 1697635 (1929-01-01), Cornelius
patent: 2077599 (1937-04-01), Wales
patent: 2165661 (1939-07-01), Stenquist
patent: 2231258 (1941-02-01), Elmore
patent: 3901212 (1975-08-01), Stites
patent: 4006729 (1977-02-01), Cesa
patent: 4043313 (1977-08-01), Sherman
patent: 4049194 (1977-09-01), Tice et al.
patent: 4059090 (1977-11-01), Shaw
patent: 4064864 (1977-12-01), Husa

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