Combustion – Process of combustion or burner operation – Flame shaping – or distributing components in combustion zone
Patent
1996-09-30
1998-08-11
Price, Carl D.
Combustion
Process of combustion or burner operation
Flame shaping, or distributing components in combustion zone
431 8, 431181, 431187, F23D 1470, F23D 1484
Patent
active
057918910
ABSTRACT:
In a method and a device for burning fuels in a combustion air main stream, the combustion air is passed in a channel over at least one deltoid body. The deltoid body consists of at least one essentially triangular vortex generator area and a downstream, trapezoid flame stabilizer area. In the region of the vortex generator area, fuel is introduced into the turbulent combustion air. The vortex generator area is set via a half sweep angle and an angle of attack relative to the main stream in such a way that the spin of the longitudinal vortexes induced in the main stream is smaller than the critical spin for generating a recirculation zone. The flame stabilization area is set via a half sweep angle and an angle of attack relative to the stream in such a way that the spin of the longitudinal vortexes induced in the stream is greater than the critical spin, so that for each deltoid body, a pair of concave recirculation zones is generated, and the ignited combustion air-fuel mixture is stabilized.
REFERENCES:
patent: 1912730 (1933-06-01), Schrader
patent: 2520388 (1950-08-01), Earl
patent: 2823519 (1958-02-01), Spalding
patent: 5498155 (1996-03-01), Chyou et al.
patent: 5554022 (1996-09-01), Nabors, Jr. et al.
ABB Research Ltd.
Price Carl D.
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