Combustion – Flame holder having protective flame enclosing or flame... – Including means feeding air axially spaced points of the flame
Patent
1980-02-04
1982-01-19
Favors, Edward G.
Combustion
Flame holder having protective flame enclosing or flame...
Including means feeding air axially spaced points of the flame
431347, F23D 1502
Patent
active
043114520
ABSTRACT:
A pilot for a 1 to 2 million btu/hr. gas burning ignitor having a chamber for mixing gas and air in combustible proportions with an annular flame retaining and stabilizing device at its outlet. This device comprises two conical surfaces configured together in back-to-back relation within a cylindrical shroud, one a converging inlet to a restricted flow area and the other a diffusing outlet surface therefrom with a sharp circumferential lip inbetween. A distribution head at the inlet to the mixing chamber directs jets of gas at the lip of said cones which aspirate turbulent air through ports in the wall of the chamber. A high voltage elecrode ingites the gas/air mixture at the cone lip. A ported extension of the mixing chamber downstream of the stabilizing device contains the pilot flame and shrouds additional aspirated air for control of secondary combustion in the pilot.
REFERENCES:
patent: 2072731 (1937-03-01), Crosby
patent: 2398654 (1946-04-01), Lubbock et al.
patent: 2538953 (1951-01-01), Yates et al.
patent: 3368604 (1968-02-01), Mutchler
patent: 3531230 (1970-09-01), Apolinarski
patent: 3881863 (1975-05-01), Creuz
patent: 4203719 (1980-05-01), Brandt
CEA of Canada, Ltd.
Favors Edward G.
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