Washing and drying method

Details Washing and drying method Washing and drying method

1992-08-18

1994-11-29

Dees, Jose' G.

Cleaning and liquid contact with solids

Processes

Including application of electrical radiant or wave energy...

134 21, 134 26, 134 30, B08B 312

Patent

active

053686497

ABSTRACT:
A washing and drying method and apparatus which uses a washing liquid such as pure water or a solvent of the hydrocarbon type but is very high in washing effect and drying effect and allows quick drying and hence a decrease of the drying time and besides can dry a workpiece of a complicated profile uniformly. A washing liquid tank in which washing liquid is accommodated is closed airtight, and the inside of the washing liquid tank is pressurized to a pressure higher than the atmospheric pressure with gas such as air or nitrogen while the washing liquid is heated to a temperature higher than the boiling point it has under the atmospheric pressure. A workpiece to be washed is immersed in the thus pressurized heated washing liquid to wash the same. The thus washed workpiece is moved from within the washing liquid tank into an evaporating drying chamber, which is subsequently isolated airtight from the washing liquid tank. Then, the inside of the evaporating drying tank is decompressed suddenly so that the washing liquid remaining sticking to the workpiece is evaporated at a moment.

REFERENCES:
patent: 4871417 (1989-10-01), Nishizawa et al.
patent: 5135608 (1992-08-01), Okutani

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