Patent ID: 6698506
Filing Date: 2004-03-02
Classification: F24H,F28F

Abstract:
A set of one or more heat conductive heat exchanger chambers integrated into a centrifugal fan housing device that directs the air stream past the said heat exchanger chambers which supports the transfer of energy from the combustion gas mixture inside the said heat exchanger chambers to the air stream outside the said heat exchanger chambers arranged in this fashion: Air tight housing except for five individual openings and one set of one or more openings in said housing, a first circular opening in one side of said device also for the intake of air, a second circular opening in a second side of the said device also for the intake of air, a separate opening in the top of the said housing for the exit of the air, a set of one or more said heat exchanger chambers with the inlet of said heat exchanger chambers affixed to the set of one or more openings of the combustion gas mixture inlet on the front of the said housing and with the outlet of said heat exchanger to the inside of the draft fan motor mount opening on the front of said housing, ax said set of one or more openings on the front of the said device for the inlet of the said combustion gas mixture supplied by a gas train assembly, a separate combustion gas exhaust pipe opening on the top of the said device for the exhaust of the said combustion gas mixture, and said mount opening for a draft fan motor assembly to scavenge the said combustion gas mixture from the said heat exchanger chambers and exhaust the said combustion gas mixture out through the combustion gas mixture exhaust pipe.