Fluid sprinkling – spraying – and diffusing – Electrostatic type – With electrogasdynamic generator in spray device
Patent
1988-10-27
1990-12-25
Kashnikow, Andres
Fluid sprinkling, spraying, and diffusing
Electrostatic type
With electrogasdynamic generator in spray device
239704, 239706, 239708, B05B 502
Patent
active
049796801
ABSTRACT:
A spray gun with electrokinetic charging of powdered material for the purpose of electrostatically coating workpieces with a powder coating. As the powder flows pneumatically through a channel of insulation material in the form of an annular gap, the plastic powder to be applied is charged by superimposition of triboelectric effects with ionization processes initiated by these effects at a passive ionizer electrode, and completed by friction against a semiconductive insert within the annular gap. Thus, the effective area of the electrostatic induction ionizer is expanded, the charge on the powder is increased and spark-like sliding discharges in the flow channels as well as dielectric breakdowns of the channel wall are prevented.
REFERENCES:
patent: 4090666 (1978-05-01), Peck
patent: 4135667 (1979-01-01), Benedek et al.
patent: 4498631 (1985-02-01), Gourdine
patent: 4659019 (1987-04-01), Talacko
patent: 4735360 (1988-04-01), Kirchner et al.
patent: 4798338 (1989-01-01), Bauch et al.
Bauch Helmut
Kleber Wolfgang
Kashnikow Andres
Trainor Christopher G.
VEB Infrarot-Anlagen Oranienburg
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