Liquid cleaning process and apparatus for circuit boards and the

Details Liquid cleaning process and apparatus for circuit boards and the Liquid cleaning process and apparatus for circuit boards and the

1990-12-06

1993-04-27

Stinson, Frankie L.

Cleaning and liquid contact with solids

Apparatus

Sequential work treating receptacles or stations with means...

134108, 134114, 134122R, B08B 1500

Patent

active

052053032

ABSTRACT:
In a liquid cleaning process and apparatus where work pieces such as printed circuit boards are cleaned in an isolated enclosure, there is provided an inert gas purging system within the enclosure and a recycling condenser within the isolated enclosure to recycle all vapors from cleaning tanks within the enclosure. The apparatus has a cleaning tank and a water tank, an isolated enclosure extends between the tanks and has liquid seal dividers that extend down into the tanks. The work pieces pass on a conveyor through the cleaning tank, under a first divider, and into the enclosure where cleaning occurs. The work pieces then pass through the water tank under the second divider. A condenser is positioned above the isolated enclosure which condenses vapors rising from the enclosure and the condensate is recirculated to the cleaning tank and the water tank.

REFERENCES:
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patent: 5056457 (1991-10-01), Harada
Dishart, K. T. and M. C. Wolff, Advantages and Process Options of Hydrocarbon Based Formulations in Semi-Aqueous Cleaning, pp. 513-527.

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