Method and apparatus for increasing the operating lifetime of gas filters by an acoustic field
AssigneeTechnion Research & Development Foundation Limited
InventorsMatitiahu Fichman, Chaim Gutfinger, Leonid Moldavsky, Kim Shuster
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Abstract
A method for slowing down the increase in pressure drop across a gas filter caused by clogging as a result of a contaminant particles layer being formed on the filter. The method comprises applying acoustic waves from an acoustic wave source to a gas to be filtered as it flows into the filter; thereby producing steady secondary acoustic streaming around dust particles already deposited on the filter, thus reducing pressure drop across the filter initially caused by clogging.
Claims7
A method for slowing down the increase in pressure drop across a gas filter caused by clogging as a result of contaminant particles layer being formed on the filter, the method comprising applying acoustic waves from an acoustic wave source to a gas flowing into the filter, wherein said acoustic wave is applied such that said gas be acoustically excited as it reaches the filter.
- thereby increasing the porosity of the contaminant particles layer on the filter, and reducing the pressure drop across the filter.
An apparatus for slowing down the increase in pressure drop across a gas filter caused by clogging as a result of a contaminant particles layer being formed on the filter, the apparatus comprising:
- an acoustic wave source positioned so as to emit acoustic waves into gas flowing towards the filter, for applying acoustic waves to the gas flowing into the filter wherein said acoustic wave is applied such that said gas be acoustically excited as it reaches the filter;
- thereby increasing the porosity of the contaminant particles layer on the filter, and reducing the pressure drop across the filter.
Dependencies are inferred from the claim text.