Cleaning method and cleaning apparatus

Details Cleaning method and cleaning apparatus Cleaning method and cleaning apparatus

1994-10-03

1996-03-26

Stinson, Frankie L.

Cleaning and liquid contact with solids

Apparatus

Sequential work treating receptacles or stations with means...

134 88, 1341022, 134184, B08B 310

Patent

active

055012400

ABSTRACT:
The invention provides a cleaning method comprising:
a step of immersing the object of cleaning first in a first tank to wash roughly by bubbling from beneath, and showering with purified water from above when lifting the object,
a step of immersing the object coming from the first tank in a second tank to wash preliminarily with ultrasonic waves, and showering with purified water from above when lifting the object,
a step of immersing the object coming from the first tank or second tank successively in a third tank to wash thoroughly with ultrasonic waves and water jet, and showering with purified water from above when lifting the object, and
a step of immersing the object coming from the third tank finally into a fourth tank to finish with water jet, and lifting. In this cleaning method, only purified water harmless to human and environment is used as cleaning fluid, and the same cleanliness as in conventional cleaning with chlorofluorocarbons or trichloroethane is obtained, while there is no side effect such as discoloring of work surface.

REFERENCES:
patent: 1036988 (1912-08-01), Fink
patent: 3527607 (1970-09-01), Antonevich
patent: 4333485 (1982-06-01), Karlsson et al.
patent: 4881561 (1989-11-01), Schwarzwaldeiz
patent: 4895176 (1990-01-01), Ohtsuka et al.
patent: 4909266 (1990-03-01), Massa
patent: 4967777 (1990-11-01), Takayama et al.
patent: 5067983 (1991-11-01), Uchino
patent: 5333629 (1994-08-01), Higashino
patent: 5345958 (1994-09-01), Otsuka

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