Liquid/supercritical carbon dioxide dry cleaning system
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United States of America Patent
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Dec 7, 1993
Grant Date -
N/A
app pub date -
Jul 13, 1992
filing date -
Jul 13, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A dry cleaning system particularly suited for employing supercritical CO.sub.2 as the cleaning fluid consisting of a sealable cleaning vessel containing a rotatable drum adapted for holding soiled substrate, a cleaning fluid storage vessel, and a gas vaporizer vessel for recycling used cleaning fluid is provided. The drum is magnetically coupled to a motor so that it an be rotated during the cleaning process. The system is adapted for automation which permits increased energy efficiency as the heating and cooling effect associated with CO.sub.2 gas condensation and expansion can be channeled to heat and cool various parts of the system.
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