Back to results
US 8,889,079 B2Granted
Apparatus for removal of particles and VOC from an airstream
AssigneeEFB Inc.
InventorKarim Zahedi
Life of this patent
Estimating the term…
Abstract
Apparatus and method for removal of particles and VOC from an airstream, in which particles carried by the airstream are charged by a corona ionizer and then collected by an electrically enhanced filter downstream of the ionizer. A catalytic filter downstream of the electrically enhanced filter removes VOC as well as ozone generated by the ionizer.
Claims19
Apparatus for removal of contaminant particles and VOC from an airstream comprising:
- an ionizer that charges particles in an in-coming airstream and generates ozone;
- an electrically enhanced filter downstream of the ionizer that collects charged particles;
- and
- a catalytic filter downstream of the electrically enhanced filter that removes VOC and ozone from the airstream.
1 more element
Airstream purification apparatus comprising:
- an electrostatic purification section followed by a chemical purification section, wherein:
- the electrostatic purification section includes an ionizing assembly that charges particles in an in-coming airstream and generates ozone, followed by an electrically enhanced media filter that collects charged particles, and
- the chemical purification section includes a catalytic filter that removes VOC and ozone in the airstream.
Apparatus for collecting contaminant particles, comprising:
- an ionizer assembly including a perforated metal plate having an array of holes and a metal grid having an array of sharpened pins facing the metal plate, each pin being centered on and spaced from a corresponding hole;
- and
- a media filter including a filter medium adjacent to the metal grid at one side of the filter medium and a porous metal plate at an opposite side of the filter medium.
Apparatus comprising:
- an ionizer assembly including a perforated metal plate having an array of holes, and a metal grid having at one side a plurality of sharp pins centered on and facing corresponding holes and being electrically isolated from the plate to accommodate a high voltage between the grid and the plate.
Dependencies are inferred from the claim text.