Cleaning and drying of electronic assemblies
AssigneeI.S.C. Chemicals Limited
InventorDavid S. L. Slinn
Life of this patent
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Abstract
Components, especially of an electronic or electrical type, are cleaned by contact with a flammable liquid organic solvent (21), especially an alcohol. The surface of the solvent is covered with a non-flammable highly fluorinated compound vapor blanket (26), which vapor may also be used to transfer heat to the organic solvent. Both highly fluorinated compound and organic solvent are condensed and re-cycled.
Claims6
A method of cleaning and drying components by contact with a hydrogen-containing flammable, liquid organic solvent in a container, wherein the solvent surface is covered by a vapour layer rich in a highly fluorinated organic compound, which transfers heat to the organic solvent, and wherein the component to be cleaned is contacted with the liquid organic solvent, removed therefrom, vapour-rinsed or dried in the highly fluorinated compound-rich vapour layer and then removed from the cleaning environment.
Dependencies are inferred from the claim text.