High speed rotary atomizer with directing air ring

US6565021B2 · kind B2 · utility

Assignee

• ABB PATENT GMBH · DE

Inventors

• Gunter Borner · Radevormwald, DE
• Steffen Georgi · Abenberg, DE
• Josef Wittmann · Hockenheim, DE
• Hidetoshi Yamabe · Tokyo, JP

Key dates

• Filing date: Sep 17, 2001
• Grant date: May 20, 2003
• Expiry date: Sep 17, 2021

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B05B15/50
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A rotary atomizer with external charging which can be used for applying conductive paints, in particular water-based paint, to a surface of a body to be coated. The rotary atomizer has a directing air ring at a high-voltage potential and an earthed spraying bell. To reduce the risk of discharges, it is proposed to connect the ring to an earth potential via a high-impedance resistance, so that the ring assumes a potential which lies between the high-voltage potential of electrodes for the external charging and the earth potential of the bell.