Liquid carbon dioxide cleaning using jet edge sonic whistles at low temperature
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United States of America Patent
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Jan 12, 1999
Grant Date -
N/A
app pub date -
Jan 7, 1998
filing date -
Jan 7, 1998
priority date (Note) -
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Abstract
A cleaning system and method utilizing sonic whistle agitation to enhance the soil removal and mass transport capacity of the liquid carbon dioxide at low process temperatures. Sonic whistles are within a cleaning chamber, and liquid carbon dioxide is forced out of the sonic whistle jets to ultrasonically emulsify and disperse non-miscible liquids or insoluble solids, such as remove low solubility oils and greases, in the liquid carbon dioxide contained in the cleaning chamber. Cleaning is accomplished at temperatures between -68.degree. F. and 88.degree. F., and the temperature of the liquid carbon dioxide is typically below 32.degree. F.
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