Patent ID: 9028588
Filing Date: 2015-05-12
Classification: B03C

Abstract:
1. A system for filtering a flow of ambient air, the system having a very low pressure drop across a filter media, the system comprising: a corona discharge apparatus including a housing and a series of parallel serrated blades within a housing, a power source for delivering an electric current to the blades, the current generating an electron cloud in the ambient air adjacent the serrated blades, the electron cloud ionizing particles within the ambient air, the corona discharge apparatus being perpendicular to the flow of the ambient air; a V-shaped grid with an apex and a base, the V-shaped grid being connected to a power source for applying a negative current to the V-shaped grid, the apex being positioned adjacent the corona discharge apparatus; upper and lower grids positioned above and below the V-shaped grid and perpendicular to the corona discharge apparatus, the upper and lower grids being connected to a power source and positively charged; upper and lower dielectric pads secured in facing relation to the upper and lower grids and serving as a filter media; whereby ionized particles from the corona discharge apparatus are repelled by the V-shaped grid and attracted by the upper and lower grids, the upper and lower grids thereby attracting particles into the upper and lower dielectric pads.