The SUN patented liquid fuel atomizing nozzle is an air driven oscillator designed specifically for atomizing liquid fuels. The atomizing air passes through a convergent / divergent orifice, within the nozzle, where it is accelerated beyond the speed of sound and upon exiting the nozzle creates a sonic shockwave. After leaving the nozzle, the sonic shockwave is reflected back by a resonator chamber to complement and amplify the primary sonic shockwave; this results in an intensified stationary sonic energy field between the nozzle exit and the resonator chamber. 

Any liquid, capable of being delivered to this high-frequency sonic field, is vigorously shattered into very fine droplets; down to 5 microns in size. Atomizing air, by-passing the resonator chamber, carries the droplets downstream in an extremely low forward velocity spray. In addition, the atomizing air by-passing the resonator chamber prevents liquid accumulation on the resonator chamber body and its support legs thus enabling the nozzle to be self-cleaning. 

By varying the atomizing air delivery pressure and volume to the nozzle, the sonic shockwave frequency can be altered, thus changing the degree of atomization to the liquid. This feature enables the same nozzle to be utilized for atomizing any grade and / or type of liquid fuel.

The degree of atomization obtained is not dependent upon the amount of pressure drop or velocity through the nozzle liquid orifices, thus allowing large liquid orifices or annular type slots to be incorporated into the nozzle. This feature allows highly viscous and  / or grossly contaminated liquids to be utilized without clogging the nozzle and permits the use of low liquid delivery pressures, which reduces, wear and greatly extends nozzle life.

The greatest advantage of the nozzle is its ability to provide a consistent quality of atomization over wide viscosity ranges and flow rates.

Sonically atomized droplets highly resist reaglomeration, thus reducing the possibility of droplets collecting on combustion chamber walls, floors, combustion tiles or burner surfaces.

The absence of any moving parts in the nozzle virtually eliminates maintenance and the resonator chamber may be removed from the nozzle for replacement if it has been damaged.