Stoves and furnaces – Hot-air furnaces – Compressed air
Patent
1993-07-21
1995-09-12
Dority, Carroll B.
Stoves and furnaces
Hot-air furnaces
Compressed air
126116R, F24H 302
Patent
active
054489865
ABSTRACT:
A heat exchanger comprises a clam shell having a first passage, a second passage and a third passage connected sequentially in a plane. A hot collector box made from metal, for example, aluminized steel, in connected to the third passage. A secondary heat exchanger coil is operatively connected to the hot collector box. A second collector box or cold collector box made from plastic is connected to the outlet of the secondary heat exchanger coil. Condensate from the flue and condensate from the cold collector box may be discharged in a common line from the furnace. The clam shell is constructed and arranged to remove about 90%-95% of the energy from the flue products flowing therethrough. The heat exchanger is disposed in a passage between the inlet and the outlet in the housing of a furnace. Air is forced over the heat exchanger, which is disposed in the passage, by a blower in the housing.
REFERENCES:
patent: 4729207 (1988-03-01), Dempsey et al.
patent: 4848314 (1989-07-01), Bentley
patent: 4860725 (1989-08-01), Tallman et al.
patent: 5178124 (1993-01-01), Lu et al.
patent: 5309890 (1994-05-01), Rieke et al.
patent: 5313930 (1994-05-01), Kujawa et al.
Christopher Delbert S.
Maiello Dennis R.
Dority Carroll B.
Lennox Industries Inc.
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