摘要:
The invention relates to a burner nozzle (3), comprising a first channel (14) for combustible fluid, an outlet opening (14') for the combustible fluid, a second channel (15) for an atomizing medium, and an outlet opening (17) for the atomizing medium, in the vicinity of which a Hartmann generator is arranged. Pure oxygen is used as the atomizing medium. The outside diameter (D2) of the plate (19) of the Hartmann generator is dimensioned such that the exit speed of the pure oxygen from the nozzle (3) is so great that the maximum usage temperature of the material of the nozzle and/or of the Hartmann generator is not exceeded in the area of the housing (11) of the nozzle (3). A result is that the mixing and combustion of oxygen and combustible fluid take place at such a distance from the burner nozzle (3) that the burner nozzle (3) is not damaged by the high flame temperature.
摘要:
An ultrasonically enhanced continuous flow apparatus for injection of liquid fuel into a continuous fuel combustor and a method of improving continuous flow fuel combustors by the application of ultrasonic energy to a pressurized liquid fuel exiting an orifice is disclosed. The apparatus includes an injector or die housing which in part defines a chamber adapted to receive a pressurized liquid and a means for applying ultrasonic energy to a portion of the pressurized liquid. The exit orifice is adapted to receive the pressurized liquid from the chamber via a vestibular cavity and pass the liquid out of the die housing. When the means for applying ultrasonic energy is excited, it applies ultrasonic energy to the pressurized liquid without mechanically vibrating the die tip.
摘要:
In a pump chamber (1) connected to a liquid supply, an overhanging piezoelectric flexural transducer (4) is disposed so that when voltage pulses are applied to produce an excursion, a number of droplets can be expelled from a nozzle array (3) in the housing wall (2c) of the pump chamber (1) using a plurality of nozzles (32). Gaps (5b) are formed between the edges lateral to the direction of overhang and the free end (4d) of the piezoelectric flexural transducer (4) and adjacent sections of the housing wall. The nozzle array (3) can be disposed in the projection of the plate surface of the piezoelectric flexural transducer (4) in its direction of motion or in the extension of the piezoelectric flexural element (4) or in another suitable position. As part of a combustion device the droplet mist generator is excellent for producing a combustible fuel-oxidant mixture.
摘要:
A sprayer comprises a casing (1) with cylindrical bushing (2) inside which is located a tubular element (3) with axial channel (16). At the end of the element (3) is mounted a acoustic head (5) with a conical UArface (6) forming acoustic oscillations and provided on the UArface with an annular groove (12). The casing (1) has a reflecting UArface (9) shaped in the form of pyramids. The sprayer is proviced with a device for swirling the gas flow (18) and with a controlling element (17) mounted in the axial channel (16).
摘要:
A fuel supply system (31) for an internal combustion engine provided with a fuel injection valve (30) and an ultrasonic atomizer (1) on the inlet pipe (25) of the engine is disclosed. The tip of the oscillator member (10) of the ultrasonic atomizer (1) is formed with an inclined portion (10b) and a reduced portion (10c) ahead of the inclined portion (10b). By arranging a fuel supply passage (9) face-to-face with this inclined portion (10b), the shape of the oscillator tip is modified, and it is possible to maintain adequate atomizing angle (α) regardless of the quantity of fuel supply without fuel becoming attached on the inner wall of the inlet pipe (25), to increase the turndown ratio and to achieve even spraying all over the circumference. Also, it is possible to shorten the engine starting time when the external air temperature is low, and to improve the combustion performance and the exhaust properties, particularly in an engine using a fuel which is difficult to ignite at low temperatures, such as alcohol, kerosene, etc.
摘要:
Liquid fuel is supplied directly to different edged portions (26 a ) and (26 c ) of a liquid atomizing section (26) of a vibrating element (10) subject to ultrasonic vibrations by means of guide tubes (50). The fuel may alternatively be jetted onto these edged portions. By supplying liquid to separate locations on the vibrating element performance is improved irrespective of the flow rate of the liquid supply.
摘要:
Liquid fuel is supplied directly to different edged portions (26 a ) and (26 c ) of a liquid atomizing section (26) of a vibrating element (10) subject to ultrasonic vibrations by means of guide tubes (50). The fuel may alternatively be jetted onto these edged portions. By supplying liquid to separate locations on the vibrating element performance is improved irrespective of the flow rate of the liquid supply.