Filter media for active field polarized media air cleaner

• US 8,795,601 B2
• Filed: 08/13/2012
• Issued: 08/05/2014
• 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): GLOVER, JOUBERT
• Application Number:
  US13/584,320
• Publication Number:
  US 20130183201A1
• Time in Patent Office: 722 Days
• Field of Search: 96/17
• US Class Current: 422/186.3
• 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. A filter media for an active field polarized media air cleaner comprising:

an air permeable filter material that includes a photocatalyst; and

first and second electrodes located on either side of the material that provide a polarizing field through the photocatalyst-treated air permeable filter material.

2. A filter media in accordance with claim 1, wherein the material is fibrous polyester.

3. A filter media in accordance with claim 1, wherein the material is fiberglass.

4. A filter media in accordance with claim 1, wherein the material is a non-woven material.

5. A filter media in accordance with claim 1, wherein the material is subject to UV light.

6. A filter media for an active field polarized media air cleaner comprising:

an air permeable filter material that contains a photocatalyst, wherein in the presence of ultraviolet light, the filter releases agents that react with contaminants; and

first and second electrodes located on either side of the material that provide a polarizing field through the air permeable filter material.

7. A filter media in accordance with claim 6, wherein the material is fibrous polyester.

8. A filter media in accordance with claim 6, wherein the material is fiberglass.

9. A filter media in accordance with claim 6, wherein the material is a non-woven material.

10. A filter media in accordance with claim 6, wherein the material is subject to UV light.

11. The filter media of claim 6, wherein the contaminants comprise airborne bioaerosols.

12. The filter media of claim 6, wherein the contaminants comprise gas phase contaminants.

13. The filter media of claim 6, wherein the agents comprise hydroxyl radicals.

14. The filter media of claim 6, wherein the agents comprise super-oxide ions.

16. A filter media in accordance with claim 13, wherein the material is subject to UV light.

15. A filter media for an active field polarized media air cleaner comprising:

an air permeable filter material; and

first and second electrodes located on either side of the material that provide a polarizing field through the air permeable filter material, wherein at least one of the electrodes has been treated by photocatalyst, wherein in the presence of ultraviolet light.