COMBUSTION CHAMBER WITH CIRCULAR ULTRASONIC SELF-EXCITED OSCILLATOR FOR FUEL ATOMIZING Russian patent published in 2001 - IPC

FIELD: mechanical engineering. SUBSTANCE: proposed combustion chamber includes injector unit communicated with supply collector, flame tube and flame stabilizer. Injector unit is made in form of circular gas-jet ultrasonic oscillator which is just body of revolution whose cross section is considerably lesser than diameter of axis of section with main and secondary toroidal resonators connected acoustically and excited by air admitted through annular skewed nozzle changing to exponential acoustic horn. For opening the acoustic horn through 180 deg., use is made of circular prechamber whose generatrix has exponential shape; it is provided with perforations smoothly distributed over circle for passage of primary air flow. Prechamber is connected with flame tube fairing and with fuel, water or aqua methanol inlet through jet transversal passages smoothly distributed over circle of horn; these passages have segment-like cross-section and are located at distance no less than length of wave from horn neck; they are communicated with circular collector cavities available inside prechamber. Flame stabilizer is made in form of fan-shaped flat plates arranged transversely relative to flow of jets of liquid from jet passages. EFFECT: intensification of liquid fuel burning process. 2 cl, 7 dwg