Summary

Electrostatic sprayers work by charging liquids (i.e., cleaners, sanitizers, and disinfectants) as they pass through a sprayer nozzle. This generates charged droplets that repel one another and actively seek out environmental surfaces, which they stick to and even wrap around to coat all sides. We designed our electrostatic sprayer to disperse an HOCL Disinfecting Solution, a product of Digital Ally Inc. It does so by electrically charging the droplets as this pass by an oppositely charged electrode, a method of electrostatic induction. This keeps the spray atomized (droplets repel each other). The charged droplets are also attracted to lower potential surfaces where they will wrap around objects and fill in crevices. The electrostatic sprayer uses less disinfectant while ensuring excellent coverage. There are several layers of safety in place keeping the customer safe while operating the sprayer.

My Contribution

I contributed to the main mechanical design by helping to build prototypes in all of the areas involved. Using Sketchup, Flatcam, Kicad, and FreeCAD, I designed our plastic components, secondary PCB boards, the Electrode, Rotating Nozzle, and battery pack. I aided with testing and helped resolved many challenges discovered along the way. I populated the main PCBs and helped build ten (10) fully working prototypes. I participated in getting a 3rd party manufacturer up and running to build the product. I contributed some IP in the area of recollecting over spray, a challenge of all induction based electrostatic sprayers, and channeling it back into the main spray stream.

Features

• Effective Electrostatic Induction induces positively charged droplets.
• Active and Passive Current Limiting for safety
• Unique enclosure design funnels droplets effectively into the spray stream
• Battery powered, the electrostatic sprayer can be used on multiple pumps.