High efficiency water heater

Details High efficiency water heater High efficiency water heater

1997-01-23

1998-10-06

Walberg, Teresa J.

Liquid heaters and vaporizers

Heat transmitter

1223672, 1223673, 122 131, 122 17, 126350R, 126361, 126362, F22B 2306

Patent

active

058161996

ABSTRACT:
A water heater having a vertical tank and a coil pipe located coaxial around the tank with a vertical ring space between them that serves as a ring combustor (bottom portion) and a flue for hot gases (upper portion). Assembly of low pressure (from about 500 Pa) plenum blower with air-blast gas burner is located right beneath of ring combustor. The burner's nozzle enters into the ring combustor tangentialy. A venting tangential outlet is located on top of the ring flue. The tank's water inlet ends with a nozzle having tangential direction. It is another water heater with two coaxial vertical coil pipes with a ring space between them and without a tank for hot water. The means for combusting fuel and venting gases are the same as in the preceding object.

REFERENCES:
patent: 4438728 (1984-03-01), Fracaro
patent: 4479484 (1984-10-01), Davis
patent: 4679528 (1987-07-01), Krans et al.
patent: 4732590 (1988-03-01), McNeil
patent: 4782815 (1988-11-01), Friedman et al.
patent: 4993402 (1991-02-01), Ripka
patent: 5365888 (1994-11-01), Aronov
patent: 5544645 (1996-08-01), Armijo et al.

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