Filter media for active field polarized media air cleaner

• US 9,764,331 B2
• Filed: 08/05/2014
• Issued: 09/19/2017
• Est. Priority Date: 12/29/2005
• Status: Active Grant

• Current Assignee: Environmental Management Confederation, Inc.
• Original Assignee: Environmental Management Confederation, Inc.
• Inventors: Wiser, Forwood C, Summers, George R., Kaeppner, Benjamin H.
• Primary Examiner(s): Smith, Duane
• Assistant Examiner(s): Turner, Sonji
• Application Number:
  US14/451,531
• Publication Number:
  US 20140338536A1
• Time in Patent Office: 1,141 Days
• CPC Class Codes: A61L 9/205 using a photocatalyst or photosensitiser
• CPC Class Codes: B03C 3/016 by acoustic or electromagnetic energy, e.g. ultraviolet light
• CPC Class Codes: B03C 3/09 characterised by presence of stationary flat electrodes arranged with their flat surfaces at right angles to the gas stream
• CPC Class Codes: B03C 3/30 in which electrostatic charge is generated by passage of the gases, i.e. tribo-electricity
• CPC Class Codes: B03C 3/34 Constructional details or accessories or operation thereof
• CPC Class Codes: B03C 3/64 synthetic resins

Abstract

Filter media for an active field polarized media air cleaner includes two layers of dielectric material with a higher resistance air permeable screen sandwiched between the lower resistivity electric layers. The filter media may further include a mixed fiber filter layer having fibers from different sides of the triboelectric scale. The filter media may further include a layer of relatively higher density dielectric material followed by a layer of relatively lower density dielectric material.

Claims

1. An active field polarized media air cleaner comprising:

a first conductive outer screen;

a second conductive screen substantially parallel to said first conductive outer screen;

a pad of material, the pad of material being disposed between said first conductive outer screen and said second conductive screen, wherein the material comprises multiple layers and at least one of the multiple lavers is a different material from another of the multiple layers; and

a high-voltage power supply having first and second terminals, the first terminal of said high voltage power supply being connected to said second conductive screen, said second terminal of said high-voltage power supply being coupled to said first conductive outer screen.

2. An active field polarized media air cleaner in accordance with claim 1, wherein the material is fibrous polyester.

3. An active field polarized media air cleaner in accordance with claim 1, wherein the material is fiberglass.

4. An active field polarized media air cleaner in accordance with claim 1, wherein the material is a non-woven material.

5. An active field polarized media air cleaner in accordance with claim 1, wherein the material is subject to UV light.

6. An active field polarized media air cleaner in accordance with claim 1, wherein the material comprises multiple layers, wherein at least one of the layers is treated by a photocatalyst.