Process for surface and fluid cleaning

Details Process for surface and fluid cleaning Process for surface and fluid cleaning

1988-05-03

1990-10-16

Pal, Asok

Cleaning and liquid contact with solids

Processes

Including regeneration, purification, recovery or separation...

134 4, 134 5, 134 31, B08B 500

Patent

active

049627767

ABSTRACT:
A cleaning system of the apparatus utilizing the effect of surface tension forces (4) and phase changes between a liquid and gas. In one embodiment the surface (21) to be cleaned is submerged within a vessel (30), the pressure within the vessel being increased. A rapid depressurization of the vessel causes a plurality of bubbles (12) to form around undesired particulate matter (13) on the surface (14) of the article to be cleaned, the bubbles rising to the surface of the liquid (27) within the chamber, thereby cleaning the article. A second embodiment utilizes a cleaning fluid (52) which is applied to the surface of the article (49) to be cleaned. The fluid being subsequently frozen on the surface, thereby reducing the adhesion force between the surface of the article and undesired particulate matter. The surface of the article (49) is subsequently heated, and the undesired particulate matter is removed through the medium of the cleaning fluid (52).

REFERENCES:
patent: 2009278 (1935-07-01), Smidel
patent: 3166445 (1965-01-01), Enemark et al.
patent: 3410724 (1968-11-01), Kondrot
patent: 3419427 (1988-12-01), Plock
patent: 3733710 (1973-05-01), Kearney et al.
patent: 4186032 (1980-01-01), Ham
patent: 4266982 (1981-05-01), Bender et al.
patent: 4409034 (1983-10-01), Williams
patent: 4586962 (1986-05-01), Barabas
patent: 4622075 (1986-11-01), Bogner
patent: 4628616 (1986-12-01), Shirai et al.
patent: 4806277 (1989-02-01), Sakurai et al.

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