Combined furnace and heat recovery system

Details Combined furnace and heat recovery system Combined furnace and heat recovery system

1997-04-17

1999-01-05

Bennett, Henry A.

Heating systems

Ventilating

237 48, 237 50, F24F 700

Patent

active

058553207

ABSTRACT:
The present invention relates to a combined furnace and air recovery system. The system is comprised of a furnace housing having an inlet opening for connection to a cold air return duct and an outlet opening connected to a heating duct. A negative pressure compartment is located within the housing and is in communication with the inlet opening. A positive pressure compartment is also located within the housing and is in communication with the outlet opening. A fan is provided, communicating between the negative pressure compartment and the positive pressure compartment. a heating unit is located within the positive pressure compartment. An air-to-air heat exchange unit is provided having first and second air flow paths, wherein the first air flow path connects an exterior inlet duct to the negative pressure chamber to provide a supply of fresh air to the negative pressure chamber and the second air flow path connects the positive pressure chamber to an exterior outlet duct to provide for exhausting stale air from said positive pressure chamber.

REFERENCES:
patent: 4429735 (1984-02-01), Nomaguchi et al.
patent: 4727931 (1988-03-01), Berner
patent: 4844020 (1989-07-01), Bruhn
patent: 5117563 (1992-06-01), Castonguay
patent: 5179998 (1993-01-01), Des Champs
patent: 5220955 (1993-06-01), Stokes
patent: 5497823 (1996-03-01), Davis
patent: 5542469 (1996-08-01), Kim

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