Rotary atomizer for particulate paints
AssigneeBehr Systems, Inc.
InventorsKurt Vetter, Rolf Schneider, Andreas Fischer, Robert F. Heldt
Life of this patent
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Abstract
A rotary atomizer applies particulate paints with good color matching by reducing paint droplet size deviation and then optimizing the other paint spraying parameters. Paint droplet size parameters are reduced by using a bell cup having reduced flow deviations, including an overflow surface having a generally constant angle between a deflector and an atomizing edge.
Claims16
A rotary atomizer bell cup for atomizing particulate material including paint having a generally conical overflow surface between a radially inward central axial opening and a radially outward atomizing edge, the generally conical overflow surface having a generally constant flow angle relative to the atomizing edge and a deflector having a deflection surface of generally rotational symmetry disposed in front of said central opening having a generally constant angle relative to the axis from at least one inlet to a radial outer edge.
A rosary atomizer for atomizing particulate material including particulate paint, comprising:
- a bell cup body including a generally conical overflow surface between a radially inward central axial opening and a radially outward atomizing edge;
- a deflector having a deflection surface of generally rotational symmetry disposed in front of said central opening having generally constant angle relative to the rotary axis from at least one inlet to a radially outer edge;
- a rear cover secured to a rear surface of the bell cup body, a generally annular cavity formed between the rear cover and overflow surface.
A method for the rotary atomization of a particulate paint including the steps of:
- a) atomizing paint having particulates into paint droplets having a paint droplet size of between 8 and 50 μm and a deviation less than 50 microns to permit proper color matching;
- and
- b) adjusting paint spray parameters to ensure proper color matching.
Dependencies are inferred from the claim text.