Water heater with reduced NO.sub.x output

Details Water heater with reduced NO.sub.x output Water heater with reduced NO.sub.x output

1992-07-23

1994-09-20

Favors, Edward G.

Liquid heaters and vaporizers

Stand boiler

Fluid fuel burner

122 14, 12223515, 122264, 126361, F22B 502

Patent

active

053479572

ABSTRACT:
A water heater with reduced nitrogen oxides output utilizing NO.sub.x reducing water conduits to cool a laminar flame and thereby reduce production of nitrogen oxides, The water heater has a partially aerated burner using a partially premixed combustion method to produce the laminar flame wherein a plurality of NO.sub.x reducing water conduits are disposed above the partially aerated burner in such a manner that water is supplied from a cold water conduit or a hot water conduit of the water heater into the plurality of NO.sub.x reducing water conduits through a water introducing portion by means of branching or serial connections. The water absorbs heat while flowing through the plurality of NO.sub.x reducing water conduits and is returned to the cold water conduit or the hot water conduit through a water receiving portion by means of and branching or serial connections.

REFERENCES:
patent: 4421066 (1983-12-01), Gordbegli
patent: 4499859 (1985-02-01), Nishiguchi et al.

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