Active field polarized media air cleaner

• US 9,789,494 B2
• Filed: 08/22/2014
• Issued: 10/17/2017
• Est. Priority Date: 12/29/2005
• Status: Active Grant

• Current Assignee: Environmental Management Confederation, Inc.
• Original Assignee: Environmental Management Confederation, Inc.
• Inventors: Wiser, III, Forwood C., Summers, George R., Kaeppner, Benjamin H.
• Primary Examiner(s): Smith, Duane
• Assistant Examiner(s): Turner, Sonji
• Application Number:
  US14/465,883
• Publication Number:
  US 20160051991A1
• Time in Patent Office: 1,152 Days
• CPC Class Codes: B01D 2258/06 Polluted air
• CPC Class Codes: B01D 53/323 by electrostatic effects or by high-voltage electric fields
• CPC Class Codes: B03C 3/025 Combinations of electrostatic separators, e.g. in parallel or in series, stacked separators, dry-wet separator combinations
• CPC Class Codes: B03C 3/155 Filtration
• CPC Class Codes: B03C 3/361 by static mechanical means, e.g. deflector
• CPC Class Codes: B03C 3/363 located before the filter
• CPC Class Codes: B03C 3/41 Ionising-electrodes
• CPC Class Codes: B03C 3/45 Collecting-electrodes
• CPC Class Codes: B03C 3/47 flat, e.g. plates, discs, gratings
• CPC Class Codes: B03C 3/64 synthetic resins
• CPC Class Codes: B03C 3/86 Electrode-carrying means B03C3/40 takes precedence
• CPC Class Codes: F24F 8/192 by electrical means, e.g. by applying electrostatic fields or high voltages
• CPC Class Codes: Y02A 50/20 Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Abstract

Improvements in active field polarized media air cleaner include an aerodynamic front cowling to reduce static air resistance, a rear double hinge to reduce blow by, a resistive center screen permitting the sharing of high voltage power supplies while reducing the tendency to arc and allowing for a higher operational voltage, a dielectric media support frame to produce a more uniform electrostatic field and reduce blow by, while at the same time reducing the tendency to spray corona and/or arc at the edges of the center screen, a substantially flat conductive outer screen to produce a more uniform electrostatic field throughout the filter media and a high-voltage shield to reduce high-voltage arcing and the spraying of corona where the high-voltage probe contacts the center screen.

Claims

1. An active field polarized media air cleaner wherein a dielectric media is located between two air-permeable screens with a power supply connected thereto that creates an applied voltage differential therebetween and wherein one of the screens is an extruded conductive plastic netting.

2. An air cleaner as in claim 1 wherein the plastic netting is made primarily of high density polyethylene.

3. An air cleaner as in claim 1 wherein the plastic netting is made primarily of low density polyethylene.

4. An air cleaner as in claim 1 wherein the plastic netting contains a fire retardant.

5. An air cleaner as in claim 1 wherein both screens are constructed of a conductive plastic netting.

6. An air cleaner as in claim 5 wherein the plastic netting is extruded.

7. An air cleaner as in claim 5 wherein the plastic netting is made primarily of high density polyethylene.

8. An air cleaner as in claim 5 wherein the plastic netting is made primarily of low density polyethylene.

9. An air cleaner as in claim 5 wherein the plastic netting contains a fire retardant.