Patent ID: 9023135
Filing Date: 2015-05-05
Classification: B01D

Abstract:
1. A method of periodically cleaning a filter media mounted at a fixed location in an enclosure through which air to be filtered flows to pass through said filter media to remove contaminants therefrom, comprising: directing air flow through said filter media at said fixed location from an output of a blower in a direction reverse to a direction of said air flow through said enclosure during normal filtering at a sufficiently high velocity to dislodge contaminants from said filter media and into an antechamber defined as a region within said enclosure upstream of said filter media at said location, said antechamber normally receiving air flow to be filtered flowing through said enclosure just prior to passing into said filter media; connecting a vacuum source to said antechamber via a port entering into said antechamber adjacent the upstream side of said filter media to induce an outflow of air from said antechamber when said reverse flow of air is being directed through said filter media from an output of said blower, said vacuum source comprising an inlet to said blower, whereby dislodged contaminants dispersed in air in said antechamber by said reverse air flow are evacuated from said antechamber by said outflow of air with said dislodged contaminants dispersed therein induced by said connection to said blower inlet.