Apparatus for drying objects with fluids

Details Apparatus for drying objects with fluids Apparatus for drying objects with fluids

1999-08-03

2000-03-28

El-Arini, Zeinab

Cleaning and liquid contact with solids

Apparatus

With plural means for supplying or applying different fluids...

134111, 134 10, 134 26, 134 30, 134 31, 34342, F26B 700

Patent

active

06041796&

ABSTRACT:
An apparatus for drying objects with fluids includes the introduction of an object (46) to be dried into a container (12). The container (12) is filled with a first fluid (48) from the bottom (16) of container (12) to a predetermined level. Subsequently, a volatile second fluid is introduced at the bottom (16) of container (12) so as to form a stable interface (56). Thereafter, volatile second fluid (50) is continued to be introduced into container (12) until first fluid (48), interface (56), and some portion of volatile second fluid (50) passes through exit (24) and two-way exit valve (26). At that point, pump (40), pumping volatile second fluid (50) into container (12), is stopped and two-way exit valve (26) closes so that residual first fluid (48) and volatile second fluid (50) pass through excess drain line (32) to first and second fluid recovery reservoir (34). Volatile second fluid (50) is extremely volatile, having a vapor pressure greater than 200 mm per Hg at STP, so that as object (26) is removed from volatile second fluid (50) or volatile second fluid (50) is allowed to drain from container (12), the thin film of volatile second fluid (50) evaporates instantly leaving completely dry object (46) free of either first fluid (48) or volatile second fluid (50) residues as well as free of any spotting or re-deposited particles. In a preferred embodiment, the first fluid (48) is water and the volatile second fluid (50) is an organic solvent with a specific gravity greater than 1.

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