公开(公告)号：US20230311138A1

公开(公告)日：2023-10-05

申请号：US18127179

申请日：2023-03-28

Applicant: Spraying Systems Co.

Inventor： Thomas Elliot ACKERMAN ,  Jason Tyler RUSCH ,  Lyndon John Wee Sit

IPC: B05B5/043 ,  B05B5/00 ,  B05B5/03

CPC classification number: B05B5/043 ,  B05B5/006 ,  B05B5/03

Abstract: An electrostatic spray nozzle assembly is described that includes an induction ring and a fluid tip. The induction ring generates an electrical field for inducing an electrical charge on droplets of a feedstock liquid from the fluid tip that pass through an opening of the induction ring. The induction ring is electrically coupled to an electrical induction field source via a first conductive path provided by conductive surfaces of: a nozzle head holding the induction ring, and a purge gas tube holding the nozzle head. Feedstock flowing through the fluid tip is electrically coupled to a charge carrier source via a second conductive path provided by at least a conductive surface of a fluid tube coupled to the fluid tip. The first conductive path and the second conductive path are electrically isolated by an insulating barrier.