Coating apparatus – Projection or spray type – With hood or offtake for waste material
Patent
1995-09-12
1998-06-16
Czaja, Donald E.
Coating apparatus
Projection or spray type
With hood or offtake for waste material
55DIG46, 454 50, B05B 1512, B05C 1200
Patent
active
057663556
ABSTRACT:
A paint spray booth utilizes an exhaust system extending longitudinally along the path of the articles to be painted having an adjustment mechanism for varying the width of the exhaust inlets extending longitudinally for substantially the entire length of the air exhaust element and a downwardly slanting bottom surface of the exhaust elements for yielding powder overspray of uniform density to a filter media. Adjusting the width of the longitudinally extending exhaust inlet spreads an adjustable pressure drop over the slot opening. Adjusting the velocity of air flow through the exhaust elements substantially avoids powder paint build-up at the exhaust inlet. The slanted configuration of the exhaust elements, in conjunction with the adjustment mechanism, improves uniformity of filter life by providing a substantially even distribution of powder overspray to a filter media. The invention finds particular advantage in powder spray booth applications and is adapted to modularization thereby enabling retrofitting of existing spray booths with apparatus arranged in accordance with the principles of the invention.
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Josefsson Leif E. B.
O'Ryan David
ABB Flexible Automation Inc.
Czaja Donald E.
Padgett Calvin
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