Drying and gas or vapor contact with solids – Process – Gas or vapor pressure varies during treatment
Patent
1993-04-29
1995-07-18
Gromada, Denise L.
Drying and gas or vapor contact with solids
Process
Gas or vapor pressure varies during treatment
34 92, 34408, 34412, F26B 504
Patent
active
054330203
ABSTRACT:
An article is dried in a vacuum and sublimation is prevented by controlling both the heat applied to the article and the heat lost through evaporation. The article is placed in a vacuum chamber having a plurality of infrared lamps disposed around the interior of the chamber and the chamber is heated to a predetermined temperature prior to evacuation. Heat loss is controlled by maintaining the pressure above approximately 5 torr, which controls the rate of evaporation. The drying cycle also cleans the article.
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Altos Engineering, Inc.
Gromada Denise L.
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