High efficiency water heating system

Details High efficiency water heating system High efficiency water heating system

1982-07-12

1984-05-01

Yuen, Henry C.

Liquid heaters and vaporizers

Stand boiler

Solid fuel burner

122 18, 126367, 431202, F22B 500

Patent

active

044454643

ABSTRACT:
A high efficiency gas fired residential water heater includes an insulated, plastic-lined storage tank. The water in the tank is heated by an external heat exchanger which defines a water-walled combustion chamber. The fuel gas and combustion air burned in the chamber are premixed to a near stoichiometric mixture without the use of a blower. Under the force of line pressure or less, the fuel gas is accelerated into an aspirator/mixer which premixes an amount of air sufficient for complete combustion of the fuel gas. The water-walled combustion chamber is particularly suited for substantial recovery of the heat of a pilot flame. The pilot products of combustion heat water at the upper end of the combustion chamber without causing significant convective flow throughout the heat exchanger.

REFERENCES:
patent: 1862630 (1932-06-01), Morrow
patent: 2179496 (1939-11-01), Czeschin
patent: 2440998 (1948-05-01), Alexander
patent: 2549755 (1951-04-01), Burwell
patent: 3388692 (1968-06-01), Hale
patent: 3707142 (1972-12-01), Kobayashi
patent: 3895607 (1975-07-01), Johnson
patent: 3917442 (1975-11-01), Zagoroff
patent: 3954386 (1976-05-01), Harpenslager et al.
patent: 4222350 (1980-09-01), Pompei et al.
patent: 4313400 (1982-02-01), Walker et al.
patent: 4338888 (1982-07-01), Gerstmann et al.

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