Water heater with noise attenuation

Details Water heater with noise attenuation Water heater with noise attenuation

2008-01-08

2008-01-08

Wilson, Gregory (Department: 3749)

Liquid heaters and vaporizers

Water tube

Coil or loop

C122S018100

Reexamination Certificate

active

11110235

ABSTRACT:
A water heater comprising a tank defining a water chamber, a water inlet and a water outlet communicating with the water chamber, and a combustion tube extending generally vertically through the water chamber and having an upper end. The water heater also comprises a coil surrounding the combustion tube and having inlet and outlet ends, a second tube communicating between the combustion tube and the inlet end of the coil, and an exhaust outlet communicating with the outlet end of the coil. The water heater further comprises a gas burner firing into the upper end of the combustion tube, and at least one expansion volume between the upper end of the combustion tube and the inlet end of the coil for attenuating noise.

REFERENCES:
patent: 2911957 (1959-11-01), Kumm
patent: 4380215 (1983-04-01), Mendelson
patent: 4846150 (1989-07-01), Maton
patent: 5022352 (1991-06-01), Osborne et al.
patent: 5687678 (1997-11-01), Suchomel et al.
patent: 5699756 (1997-12-01), Ross et al.
patent: 5735237 (1998-04-01), Phillip et al.
patent: 6036480 (2000-03-01), Hughes et al.
patent: 6810836 (2004-11-01), Ferguson et al.
patent: 0 926 439 (1999-06-01), None
patent: 56-12949 (1981-02-01), None
patent: 63-129246 (1988-06-01), None

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