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US 6,322,615 B1Granted
High efficiency permanent air filter and method of manufacture
OwnerRick L. Chapmaninventor
Life of this patent
Estimating the term…
Abstract
A novel air filter design for use in residential and commercial heating and air conditioning systems comprising a laminated unit having a filter media where the upstream side of the filter media having a porous layer of passive electrostatic netting. The air filter design has a corrugation configuration to increase the available surface area when compared to conventional flat filters.
Claims20
A washable, air filter for filtering inlet air to a heating and/or air conditioning system comprising an assembly formed of:
- a formable, non-electrostatic pad of a low to high-loft, bonded polymeric fibers having a high filtering efficiency for 10 micron and less particles and having a thickness from 0.01 to 0.45 inches and a density from 0.05 to 5 ounces per yard, said pad having an upstream front surface and a downstream rear surface;
- a layer of porous, passive electrostatic polymeric material disposed on at least one side of the pad having a downstream surface in contact with said surfaces, and having an outside surface;
- a deformable grill disposed in contact with the surface of the polymeric material;
- and
- said assembly having a pleated or corrugated configuration in which the angle between adjacent wall surfaces of the pleats is from 0° to 20°.
2 more elements
A method of manufacturing a washable filter for filtering inlet air flow to a heating and/or air conditioning system, comprising the steps of:
- placing a sheet of passive electrostatic polyalkylene netting in contact with the surfaces of a formable pad of a high-loft, air laid, bonded, polymeric fibers having a thickness from 0.01 to 0.45 inch and a density from 0.1 to 5 ounces per yard and a high efficiency for 10 micron or less particles;
- placing a porous layer in contact with the outer surfaces of the netting to form an assembly;
- and
- corrugating said assembly to form pleats in which the angle between wall surfaces is from 0° to 20°.
1 more element
Dependencies are inferred from the claim text.