Heater using hot waste flue gases
OwnerLarry J. Condoninventor
Life of this patent
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Abstract
A method and apparatus to heat a forced-air supply utilizing hot waste gases in a flue. A flue closure housing is supported by a frame that is arranged to surround an opening in the chimney. The housing supports a heat exchanger having side walls formed of plates with a space between the plates being sealed by end walls to form a flow space for a forced-air supply. The heat exchanger is sealed to a flue closure plate forming part of the flue closure housing. The heat exchanger receives a supply of cold air from a motor-driven blower coupled to a header. Heated air from the heat exchanger is directed by a hot-air discharge header through an opening in the flue closure housing.
Claims9
Apparatus to heat a forced-air supply with hot waste gases while conducted by a chimney having a side wall with an opening for access to the stream of flue gases, the combination including:
- a frame supported by the side wall of said chimney to surround said opening therein,
- a flue closure housing supported by said frame to form a gas-tight enclosure for the opening in the side wall of said chimney,
- a heat exchanger having walls forming an internal passageway to conduct air along a path transverse to the stream of flue gases in said chimney, said heat exchanger being supported by said flue closure housing,
- a cold-air supply header supported by said flue closure housing while coupled to communicate with the internal passageway of said heat exchanger,
- a hot-air discharge header supported by said flue closure housing while coupled to communicate with the internal passageway of said heat exchanger, and
- blower means to force air through said heat exchanger.
Dependencies are inferred from the claim text.