Cleaning and liquid contact with solids – Apparatus – With plural means for supplying or applying different fluids...
Patent
1990-04-24
1991-07-02
Coe, Philip R.
Cleaning and liquid contact with solids
Apparatus
With plural means for supplying or applying different fluids...
134102, 134113, 134200, 134902, B08B 302
Patent
active
050278410
ABSTRACT:
A batch cleaning system which can use a combustible solvent to clean printed circuit boards or other electronic assemblies is disclosed. An inner enclosure is sealed by a door. A rack for supporting printed circuit boards or other electronic assemblies or the like is mounted inside the inner enclosure. A plurality of spray nozzles are mounted within the inner enclosure. The inner enclosure is purged of air by introducing an inert gas. Combustible solvent is introduced into the bottom of the inner enclosure where it is pumped through the spray nozzles to clean the printed circuit boards. The contamination level of the solvent is measured and recorded. The solvent is drained back into a solvent holding tank upon completion of the cleaning cycle for subsequent reuse during the next cleaning cycle.
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Austen Paul M.
Breunsbach Rex
Coe Philip R.
Electronic Controls Design, Inc.
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