Ultra low NOX burner

Details Ultra low NOX burner Ultra low NOX burner

1993-04-12

1995-04-18

Yeung, James C.

Combustion

Combustion products return structure

431181, 431278, 431285, 431353, F23L 900

Patent

active

054073456

ABSTRACT:
A burner is disclosed having a burner chamber with heavily insulated heat retaining walls and a series of off center mixer tubes located at one end thereof. A uniform concentration gas/air mixture to 50% additional fuel above the lean flammability limit coming from the mixer tubes is ignited in the burner chamber due to the recirculation of combusting gas and air back to the end of the burner chamber above auto the ignition temperature for the mixture. The particular mixture disclosed utilizes 0.55-0.7 equivalence ratio.

REFERENCES:
patent: 2515845 (1950-07-01), Van den Bussche
patent: 4004875 (1977-01-01), Zink et al.
patent: 4629413 (1986-12-01), Michelson et al.
patent: 5135387 (1992-08-01), Martin et al.
patent: 5195884 (1993-03-01), Schwartz et al.
patent: 5201650 (1993-04-01), Johnson

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