Systems and methods for cleaning air

Patent metadata

Field	Value
Publication number	US-11052406-B2
Application number	US-201815918684-A
Country	US
Kind code	B2
Filing date	Mar 12, 2018
Priority date	Jul 31, 2014
Publication date	Jul 6, 2021
Grant date	Jul 6, 2021

Abstract

An air cleaning system has a field charger comprising a plurality of bars comprising a conductive inner core and a non-conductive overmold, and a plurality of pins attached to the bars and extending out of the non-conductive overmold. The conductive inner core is molded over the plurality of pins, conductively connecting the pins, and the non-conductive overmold is molded over the conductive inner core. A method of manufacturing the field charger includes placing a plurality of metal pins in a mold, placing contact points in the mold, molding a conductive resin over at least a portion of the plurality of pins and contact points, molding an insulating resin over the inner core, plurality of pins, and contact points, wherein at least a portion of the pins and contact points extend from the non-conductive overmold, and mounting an earthplate to the conductive overmold.

First claim

What is claimed is:

1. A field charger for use with a clean air system, wherein the field charger comprises one or more bars each comprising:
a plurality of metal pins;
a conductive inner core conductively connecting the plurality of metal pins; and
a non-conductive overmold molded over the conductive inner core and a portion of the metal pins,
wherein the conductive inner core comprises a conductive resin molded over a portion of the metal pins, and the conductive resin comprises at least one of a carbon filler and a stainless steel filler.

2. The field charger of claim 1 , wherein the non-conductive overmold comprises a glass fiber.

3. The field charger of claim 1 , wherein the non-conductive overmold comprises a minimum thickness of about 0.06 inches.

4. The field charger of claim 1 , wherein the conductive inner core comprises a minimum thickness of about 0.06 inches.

5. The field charger of claim 1 , wherein the non-conductive overmold comprises edges that taper relative to each edge of a cross-section of the non-conductive overmold.

6. The field charger of claim 1 , wherein the non-conductive overmold comprises a nonconductive plastic resin.

7. The field charger of claim 1 , further comprising an earthplate coupled to the non-conductive overmold operable to provide a ground connection.

8. The field charger of claim 1 , wherein the one or more bars are conductively coupled to form a rectangular grid.

9. The field charger of claim 1 , wherein each of the one or more bars further comprises a plurality of cut-outs positioned between the plurality of metal pins.

10. The field charger of claim 1 , wherein the conductive inner core comprises a carbon filler.

11. The field charger of claim 1 , wherein a distance between each of the plurality of metal pins is about 2.1 inches.

12. The field charger of claim 1 , wherein the metal pins extend all the way through the conductive inner core and into the non-conductive overmold.

13. The field charger of claim 1 , wherein a cross-section of the inner conductive core is approximately symmetrical about a horizontal axis and a vertical axis.

14. The field charger of claim 13 , wherein the cross-section of the inner conductive core includes edges that taper relative to each side of the cross-section.

15. The field charger of claim 14 , wherein the cross-section of the non-conductive overmold comprises an octagonal profile.

Assignees

• Trane Int Inc

Inventors

• Jameson Richard Lee
• Woodruff Mark D
• Field Jay E

Classifications

• F24F8/192

  by electrical means, e.g. by applying electrostatic fields or high voltages · CPC title

• B03C3/12

  characterised by separation of ionising and collecting stations · CPC title

• B03C3/32

  Transportable units, e.g. for cleaning room air · CPC title

• B03C3/368

  by other than static mechanical means, e.g. internal ventilator or recycler · CPC title

• B03C3/41

  Ionising-electrodes · CPC title