Filter media for active field polarized media air cleaner

• US 8,252,095 B2
• Filed: 03/26/2010
• Issued: 08/28/2012
• 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): Chiesa, Richard L
• Application Number:
  US12/732,626
• Publication Number:
  US 20110002814A1
• Time in Patent Office: 886 Days
• Field of Search: 96/15, 96/17, 96/66, 96/69, 96/98, 96/99, 555/27, 555/28, 55D/IG.39
• US Class Current: 96/17
• 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 3/64 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 mixed triboelectric material comprising fibers from different parts of the triboelectric scale;

said pad of mixed triboelectric material being disposed between said first conductive outer screen and said second conductive screen; and

a high-voltage power supply having first and second terminals, said 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 said pad of mixed triboelectric material comprises a first layer of fibers from one part of the triboelectric scale, and a second layer fibers from a different part of the triboelectric scale.

3. An active field polarized media air cleaner in accordance with claim 1, wherein said pad of mixed triboelectric material comprises a blend of first and second fibers, said first fibers being from one part of the triboelectric scale and said second fiber being from a different part of the triboelectric scale.