Patent ID: 7178741
Filing Date: 2007-02-20
Classification: B05B

Abstract:
1. A micro droplet generating device comprising: a lower space for containing a control panel; and an upper chamber for containing a fluid medicine and including a nebulized area; wherein, in the nebulized area there are provided: (a) an outer nozzle plate including a plurality of tapered apertures each having a small outer opening and a large inner opening, and (b) a piezoelectric element electrically coupled to the control panel such that activating the piezoelectric element will vibrate the piezoelectric element to sufficiently mix the liquid medicine therearound for developing fluid cavitation in the nebulized area, form a stream of droplets from small particles of the fluid medicine and ejects the same therefrom, condense larger particles of the fluid medicine due to collision therebetween, and drop the condensed liquid into the fluid medicine; said droplet generating further comprising a frame formed between the nozzle plate and the piezolelectric element, the piezoelectric element is cantilevered by driving one or more fasteners through lower sides of the frame and the piezoelectric element into the chamber.