Catalytic burner with dual mode venturis

Details Catalytic burner with dual mode venturis Catalytic burner with dual mode venturis

1988-07-22

1990-02-27

Price, Carl D.

Combustion

Mixer and flame holder

431346, 431355, 126 38, 239407, F23D 1462

Patent

active

049041827

ABSTRACT:
The present invention relates to a two stage venturi for a catalytic burner wherein a large exit aperture size and a small air entrainment opening are used to provide a low velocity, rich fuel/air mixture for the pre-heating process followed by a small exit aperture size and a large air entrainment opening to provide a high velocity, lean fuel/air mixture for the catalytic combustion process. Concentric rotating sleeves are used to vary the size of the exit apertures and the air entrainment openings.

REFERENCES:
patent: 806827 (1905-12-01), Noyes
patent: 928497 (1909-07-01), Carnahan
patent: 957358 (1910-05-01), Meyer-Zimmerli
patent: 966480 (1910-08-01), Schulze
patent: 987459 (1911-03-01), Harrison et al.
patent: 1019318 (1912-03-01), Grandjean
patent: 1546286 (1925-07-01), Koch
patent: 4588373 (1986-05-01), Tonon et al.

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