Coating processes – Spraying
Patent
1985-10-28
1987-08-18
Beck, Shrive P.
Coating processes
Spraying
118326, 55DIG46, 981152, B05D 102
Patent
active
046876863
ABSTRACT:
An apparatus and method is provided for regulating the climate in a spray booth. The spray booth comprises a chamber for housing articles during spray application of a coating material to the articles and an air circulation system for supplying either ambient air or recirculation air to the chamber. The chamber has an outlet for exhausting a contaminated mixture of chamber air and coating material overspray from the chamber. The spray booth further includes a liquid filter for washing the contaminated mixture exhausted through the chamber outlet to wash the coating material overspray out of the mixture. The air circulation system of the improved spray booth includes a system for controlling the temperature of the air supplied to the chamber to regulate the relative humidity of the air in the chamber. The method comprises the steps of exhausting contaminated air consisting essentially of spray booth air and coating material overspray from the spray booth, exposing the exhausted air to liquid to decontaminate the exhausted air for recirculation to the spray booth, lowering the relative humidity of the decontaminated air, and subsequently introducing the decontaminated recirculation air into the spray booth without introducing a large volume of additional outside air so as to regulate the climate in the spray booth.
REFERENCES:
patent: 4173924 (1979-11-01), Bradshaw
patent: 4258656 (1981-03-01), Hallgren
patent: 4266504 (1981-05-01), Roesner
patent: 4313369 (1982-02-01), Tsuruta et al.
patent: 4537120 (1985-08-01), Josefsson
Muehlbauer James H.
Stofleth David F.
Beck Shrive P.
George Koch Sons, Inc.
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