F - Mech Eng,Light,Heat,Weapons – 28 – D
Patent
F - Mech Eng,Light,Heat,Weapons
28
D
F28D 21/00 (2006.01) F24H 3/10 (2006.01)
Patent
CA 2056484
ABSTRACT OF THE DISCLOSURE The improved sectional high efficiency heat exchanger of the present invention comprises apparatus for directing hot flue gases backwardly and into a defined lower combustion chamber. Whereupon, such hot flue gases are directed forwardly in the lower combustion chamber through the upper past thereof. The heated air stream flow is then directed into and to the rear of a lower flue pass, and finally forwardly and to the front of the heat exchanger through an upper flue pass for exiting into a flue collector box. As a result of the above structure, during the burner-"off" cycle combusting gases from the pilot burner are permitted to flow upwardly along the front wall of the lower combustion chamber and into the upper flue passes, thus permitting the heat exchanger to obtain the benefit of the heat energy of the pilot burner gas during the burner-"off" cycle.
Evens Lance J.
Lennox Industries Inc.
Smart & Biggar
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