Water heater with condensing flue

Details Water heater with condensing flue Water heater with condensing flue

2007-12-13

2010-11-23

Wilson, Gregory A (Department: 3749)

Liquid heaters and vaporizers

Flue

Vertical

C122S013010, C122S018100, C122S155100

Reexamination Certificate

active

07836856

ABSTRACT:
A water heater has a burner positioned below a vertical centrally located flue with heat exchange capacity enhanced by a multiplicity of rectangular metal fins which are welded on the inside of the vertical central flue. The central flue extends upwardly within a water tank. The central flue transitions to a smaller diameter downwardly draining helically coiled condensing flue. Approximately 80% of the heat from the combustion gases is transferred to the water within the water tank through the wall of the central flue without condensation. An additional 10% or more of the combustion heat is transferred to the water accompanied by condensation of water in the coiled flue. A fan draws the combustion gases through the central flue and the coiled condensing flue and supplies the combustion gases to an exterior vent.

REFERENCES:
patent: 2147046 (1939-02-01), Leoni
patent: 2286677 (1942-06-01), Greth
patent: 2937625 (1960-05-01), Meyers
patent: 4426037 (1984-01-01), Bernstein
patent: 4492185 (1985-01-01), Kendall et al.
patent: 4641631 (1987-02-01), Jatana
patent: 4679528 (1987-07-01), Krans et al.
patent: 4766883 (1988-08-01), Cameron et al.
patent: 4782815 (1988-11-01), Friedman et al.
patent: 4993402 (1991-02-01), Ripka
patent: 5022352 (1991-06-01), Osborne et al.
patent: 5228413 (1993-07-01), Tam
patent: 5365888 (1994-11-01), Aronov
patent: 5485879 (1996-01-01), Lannes
patent: 5687678 (1997-11-01), Suchomel et al.
patent: 5735237 (1998-04-01), Phillip et al.
patent: 5782208 (1998-07-01), Lackstrom et al.
patent: 5816199 (1998-10-01), Khizh et al.
patent: 6230665 (2001-05-01), Reynolds et al.
patent: RE37240 (2001-06-01), Moore et al.
patent: 6334411 (2002-01-01), Lesage et al.
patent: 6354248 (2002-03-01), Bourke
patent: 6418883 (2002-07-01), Bourke et al.
patent: 6435174 (2002-08-01), Spilde et al.
patent: 6725811 (2004-04-01), Moore et al.
patent: 6957629 (2005-10-01), Steinhafel et al.
patent: 7258080 (2007-08-01), Missoum et al.
patent: 2003/0123863 (2003-07-01), Hughes et al.
Vertex™ water heater, A.O. Smith company pamphlet.
Cyclone Xi™ water heater, A.O. Smith company pamphlet.
Polaris® water heater, American Water Heaters company pamphlet.

Affiliated with

Also associated with

Rating

Water heater with condensing flue does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Water heater with condensing flue, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Water heater with condensing flue will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4163332