IP Library Granted Patent US 7,291,206
Granted Patent B1
US 7,291,206 · App. 11/405,779 · Granted Nov 6, 2007

Pre-ionizer for use with an electrostatic precipitator

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Quick Facts
Patent No.
US 7,291,206
App. No.
11/405,779
Granted
Nov 6, 2007
Kind
B1
Abstract

A pre-ionizer for use with an electrostatic precipitator is provided according to an embodiment of the invention. The pre-ionizer includes two or more corona ground elements arranged in a substantially parallel orientation. A corona ground element of the two or more corona ground elements includes a substantially elongate body including a proximate end and a distal end and first and second projections formed on the proximate end and the distal end. The first and second projections retain the corona ground element in the electrostatic precipitator. The pre-ionizer further includes one or more corona charge elements positioned between two adjacent corona ground elements of the two or more corona ground elements. When a high voltage electrical field is placed across the two or more corona ground elements and the one or more corona charge elements, the pre-ionizer at least partially ionizes airflow through the pre-ionizer.

Claims (43)

1. A pre-ionizer adapted for use with an electrostatic precipitator, with the pre-ionizer comprising:

two or more corona ground elements arranged in a substantially parallel orientation, with a corona ground element of the two or more corona ground elements comprising:

a substantially elongate body including a proximate end and a distal end; and

first and second projections formed on the proximate end and the distal end, with the first and second projections being adapted to retain the corona ground element in the electrostatic precipitator; and

one or more corona charge elements positioned between two adjacent corona ground elements of the two or more corona ground elements, wherein when a high voltage electrical field is placed across the two or more corona ground elements and the one or more corona charge elements, the pre-ionizer at least partially ionizes airflow through the pre-ionizer.

2. The pre-ionizer of claim 1 , with the one or more corona charge elements being substantially equidistant from two adjacent corona ground elements of the two or more corona ground elements.

3. The pre-ionizer of claim 1 , with the one or more corona charge elements being substantially laterally centered on two adjacent corona ground elements of the two or more corona ground elements.

4. The pre-ionizer of claim 1 , with a corona ground element of the two or more corona ground elements comprising a substantially rectangular cross-sectional shape.

5. The pre-ionizer of claim 1 , with a corona ground element of the two or more corona ground elements comprising a substantially circular cross-sectional shape.

6. The pre-ionizer of claim 1 , with a corona ground element of the two or more corona ground elements comprising a substantially ovoid cross-sectional shape.

7. The pre-ionizer of claim 1 , with a corona ground element of the two or more corona ground elements comprising a substantially teardrop cross-sectional shape.

8. The pre-ionizer of claim 1 , with a corona ground element of the two or more corona ground elements comprising a body and two substantially opposing substantially planar fins.

9. The pre-ionizer of claim 1 , with a corona ground element of the two or more corona ground elements comprising a substantially solid corona ground element.

10. The pre-ionizer of claim 1 , with a corona ground element of the two or more corona ground elements comprising a substantially hollow corona ground element.

11. The pre-ionizer of claim 1 , with the body comprising a tube.

12. A pre-ionizer adapted for use with an electrostatic precipitator, with the pre-ionizer comprising:

two or more corona ground elements arranged in a substantially parallel orientation, with a corona ground element of the two or more corona ground elements comprising:

a substantially elongate body including a proximate end and a distal end; and

a substantially aerodynamic cross-sectional shape including a cavity formed in the body, wherein the body is closed and substantially hollow; and

one or more corona charge elements positioned between two adjacent corona ground elements of the two or more corona ground elements, wherein when a high voltage electrical field is placed across the two or more corona ground elements and the one or more corona charge elements, the pre-ionizer at least partially ionizes airflow through the pre-ionizer.

13. The pre-ionizer of claim 12 , with the one or more corona charge elements being substantially equidistant from two adjacent corona ground elements of the two or more corona ground elements.

14. The pre-ionizer of claim 12 , with the one or more corona charge elements being substantially laterally centered on two adjacent corona ground elements of the two or more corona ground elements.

15. The pre-ionizer of claim 12 , with a corona ground element of the two or more corona ground elements comprising a substantially solid corona ground element.

16. The pre-ionizer of claim 12 , with a corona ground element of the two or more corona ground elements comprising a substantially hollow corona ground element.

17. The pre-ionizer of claim 12 , with a corona ground element of the two or more corona ground elements further comprising first and second projections formed on the proximate end and the distal end, with the first and second projections being adapted to retain the corona ground element in the electrostatic precipitator.

18. The pre-ionizer of claim 12 , with the body comprising a tube.

19. A pre-ionizer adapted for use with an electrostatic precipitator, with the pre-ionizer comprising:

two or more corona ground elements arranged in a substantially parallel orientation, with a corona ground element of the two or more corona ground elements comprising a substantially elongate, closed and hollow body including a proximate end and a distal end; and

one or more corona charge elements positioned between two adjacent corona ground elements of the two or more corona ground elements, wherein when a high voltage electrical field is placed across the two or more corona ground elements and the one or more corona charge elements, the pre-ionizer at least partially ionizes airflow through the pre-ionizer.

20. The pre-ionizer of claim 19 , with the one or more corona charge elements being substantially equidistant from two adjacent corona ground elements of the two or more corona ground elements.

21. The pre-ionizer of claim 19 , with the one or more corona charge elements being substantially laterally centered on two adjacent corona ground elements of the two or more corona ground elements.

22. The pre-ionizer of claim 19 , with a corona ground element of the two or more corona ground elements comprising a substantially rectangular cross-sectional shape.

23. The pre-ionizer of claim 19 , with a corona ground element of the two or more corona ground elements comprising a substantially circular cross-sectional shape.

24. The pre-ionizer of claim 19 , with a corona ground element of the two or more corona ground elements comprising a substantially ovoid cross-sectional shape.

25. The pre-ionizer of claim 19 , with a corona ground element of the two or more corona ground elements comprising a substantially teardrop cross-sectional shape.

26. The pre-ionizer of claim 19 , with a corona ground element of the two or more corona ground elements comprising a body and two substantially opposing substantially planar fins.

27. The pre-ionizer of claim 19 , with a corona ground element of the two or more corona ground elements further comprising first and second projections formed on the proximate end and the distal end, with the first and second projections being adapted to retain the corona ground element in the electrostatic precipitator.

28. The pre-ionizer of claim 19 , with the body comprising a tube.

29. A pre-ionizer adapted for use with an electrostatic precipitator, with the pre-ionizer comprising:

two or more corona ground elements arranged in a substantially parallel orientation, with a corona ground element of the two or more corona ground elements comprising two or more ground wire pairs; and

one or more corona charge elements positioned between two adjacent corona ground elements of the two or more corona ground elements substantially in a plane perpendicular to an airflow, wherein when a high voltage electrical field is placed across the two or more corona ground elements and the one or more corona charge elements, the pre-ionizer at least partially ionizes airflow through the pre-ionizer.

30. The pre-ionizer of claim 29 , with the one or more corona charge elements being substantially equidistant from two adjacent corona ground elements of the two or more corona ground elements.

31. The pre-ionizer of claim 29 , with the one or more corona charge elements being substantially laterally centered on two adjacent corona ground elements of the two or more corona ground elements.

Assignments (4)
CORRECTIVE ASSIGNMENT TO CORRECT THE NAME OF ASSIGNOR FROM ORECK HOHLDINGS, LLC TO ORECK HOLDINGS, LLC PREVIOUSLY RECORDED ON REEL 030996 FRAME 0879. ASSIGNOR(S) HEREBY CONFIRMS THE CORRECTION OF ASSIGNOR NAME. Recorded Aug 27, 2013
From: ORECK HOLDINGS, LLC
To: TECHTRONIC FLOOR CARE TECHNOLOGY LIMITED
Reel/Frame 031089/0490 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 13, 2013
From: ORECK HOHLDINGS, LLC
To: TECHTRONIC FLOOR CARE TECHNOLOGY LIMITED
Reel/Frame 030996/0879 →
RELEASE OF SECURITY INTEREST Recorded Aug 30, 2012
From: ROYAL BANK OF SCOTLAND, PLC
To: ORECK HOLDINGS, LLC
Reel/Frame 028878/0832 →
SECURITY INTEREST Recorded Aug 30, 2012
From: ASP ORECK INC.; ORECK DIRECT, LLC, A DELAWARE LIMITED LIABILITY COMPANY; ORECK MERCHANDISING, LLC, A DELAWARE LIMITED LIABILITY COMPANY; ORECK HOMECARE, LLC, A DELAWARE LIMITED LIABILITY; VECTEUR, LLC, A DELAWARE LIMITED LIABILITY COMPANY; ORECK HOLDINGS, LLC, A DELAWARE LIMITED LIABILITY COMPANY; ORECK FRANCHISE SERIVCES, LLC, A DELAWARE LIMITED LIABILITY COMPANY; MANUFACTURING COMPANY, A DELAWARE CORPORATION; ORECK SALES, LLC, A DELAWARE LIMITED LIABILITY COMPANY
To: WELLS FARGO BANK, NATIONAL ASSOCIATION
Reel/Frame 028932/0817 →