Liquid heaters and vaporizers – Water tube – Coil or loop
Reexamination Certificate
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.
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Akkala Marc W.
Lee Hyungsik
AOS Holding Company
Wilson Gregory
LandOfFree
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