IP Library › Granted Patent US 8,252,100
Granted Patent B2
US 8,252,100 · App. 13/244,973 · Granted Aug 28, 2012

Air filtration device

Assignee: LifeAire Systems, LLC
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 8,252,100
App. No.
13/244,973
Granted
Aug 28, 2012
Kind
B2
Abstract

An air purifier has a housing with an inlet for receiving air and an outlet for exhausting air. The housing provides an air flow path for the flow of air in a downstream direction, from the inlet towards the outlet. Particulate pre-filtration is located within the housing downstream from the air inlet. VOC pre-filtration is located within the housing downstream from the particulate pre-filtration. UV filtration is located within the housing downstream from the VOC pre-filtration. VOC post-filtration is located within the housing downstream from the UV filtration. Final particulate filtration is located within the housing downstream from the VOC post-filtration.

Claims (39)

1. An air purifier comprising:

a. a housing having an inlet for receiving air and an outlet for exhausting air, the housing providing an air flow path for the flow of air in a downstream direction, from the inlet towards the outlet;

b. oxidizing and adsorbing VOC pre-filtration within the housing downstream from the inlet;

c. UV filtration within the housing downstream from the VOC pre-filtration; and

d. final particulate filtration within the housing downstream from the UV filtration.

2. The air purifier of claim 1 , further comprising particulate pre-filtration within the housing downstream from the inlet and upstream from the VOC pre-filtration.

3. The air purifier of claim 2 , wherein the particulate pre-filtration includes one or more filters having a MERV of 5 to 13 with an Average ASHRAE Dust Spot Efficiency (Standard 52.1) of 20% to 80%.

4. The air purifier of claim 1 , further comprising particulate post-filtration within the housing, downstream from the VOC pre-filtration and upstream from the UV filtration.

5. The air purifier of claim 4 , wherein the particulate post-filtration includes one or more filters having a MERV of 5 to 13 with an Average ASHRAE Dust Spot Efficiency (Standard 52.1) of 20% to 80%.

6. The air purifier of claim 1 , wherein the VOC pre-filtration comprises bonded media.

7. The air purifier of claim 6 , wherein the bonded media includes bonded carbon.

8. The air purifier of claim 1 , further comprising oxidizing and adsorbing VOC post-filtration within the housing downstream from the UV filtration and upstream from the final particulate filtration.

9. The air purifier of claim 1 , wherein the VOC pre-filtration comprises one or more filters containing blended carbon and KMnO 4 .

10. The air purifier of claim 1 , wherein at least a portion of the interior of the housing encasing the UV filtration has a coefficient of reflection of at least 60%.

11. The air purifier of claim 1 , wherein the UV filtration comprises a UVC source adapted to generate radiation having a wavelength in a range of about 220 nm to about 288 nm.

12. The air purifier of claim 11 , wherein the UV filtration is capable of providing a total UVC output ranging from about 33,464 μJ/cm 2 to about 90,165 μJ/cm 2 .

13. The air purifier of claim 11 , wherein the UV filtration comprises a plurality of lamps extending longitudinally through the housing.

14. The air purifier of claim 11 , the UV filtration further comprising a vacuum UV source upstream from the UVC source, the vacuum UV source adapted to generate radiation having a wavelength of about 170 nm to about 220 nm.

15. The air purifier of claim 14 , wherein the UV filtration comprises a plurality of dual-zoned lamps, each lamp extending longitudinally through the housing and having an upstream vacuum UV source and a downstream UVC source.

16. The air purifier of claim 13 , further comprising a sensor coupled to each lamp, the sensor being adapted to detect information about the lamp to which it is coupled and transmit a signal representative of the information to a monitor, wherein the information includes whether the lamp to which the sensor is coupled is operating at a given time.

17. The air purifier of claim 1 , wherein the final particulate filtration includes one or more filters having a MERV of 13 or greater with an average ASHRAE Dust Spot Efficiency (Std. 52.1) of 80% or greater.

18. The air purifier of claim 17 , wherein the final particulate filtration includes one or more filters selected from the group consisting of HEPA filters and ULPA filters.

19. An air purifier comprising:

a. a housing having an inlet for receiving air and an outlet for exhausting air, the housing providing an air flow path for the flow of air in a downstream direction, from the inlet towards the outlet;

b. particulate pre-filtration within the housing downstream from the air inlet;

c. VOC pre-filtration within the housing downstream from the particulate pre-filtration;

d. UV filtration within the housing downstream from the VOC pre-filtration;

e. VOC post-filtration within the housing downstream from the UV filtration; and

f. final particulate filtration within the housing downstream from the VOC post-filtration.

20. The air purifier of claim 19 , further comprising particulate post-filtration within the housing downstream from the VOC pre-filtration and upstream from the UV filtration.

21. The air purifier of claim 20 , wherein the particulate pre-filtration and particulate post-filtration each include one or more filters having a MERV of 5 to 13 with an Average ASHRAE Dust Spot Efficiency (Standard 52.1) of 20% to 80%.

22. The air purifier of claim 19 , wherein both the VOC pre-filtration and VOC post-filtration oxidize and adsorb.

23. The air purifier of claim 19 , wherein both the VOC pre-filtration and VOC post-filtration comprise bonded media.

24. The air purifier of claim 23 , wherein the bonded media includes bonded carbon.

25. The air purifier of claim 19 , wherein both the VOC pre-filtration and VOC post-filtration comprise carbon and KMnO 4 .

26. The air purifier of claim 25 , wherein both the VOC pre-filtration and VOC post-filtration comprise one or more filters containing blended carbon and KMnO 4 .

27. The air purifier of claim 19 , wherein the UV filtration comprises a UVC source adapted to generate radiation having a wavelength in a range of about 220 nm to about 288 nm.

28. The air purifier of claim 19 , wherein the final particulate filtration includes one or more filters having a MERV of 13 or greater with an average ASHRAE Dust Spot Efficiency (Std. 52.1) of 80% or greater.

29. The air purifier of claim 28 , wherein the final particulate filtration includes one or more filters selected from the group consisting of HEPA filters and ULPA filters.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 1, 2011
From: WORRILOW, KATHRYN C
To: LIFEAIRE SYSTEMS, LLC
Reel/Frame 027152/0536 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 6, 2011
From: WORRILOW, KATHRYN C
To: LIFEAIRE SYSTEMS, LLC
Reel/Frame 027025/0682 →
Continuity (2)
Continuation 12732246 · Mar 26, 2010
Related Publication 20120014856A1 · Jan 19, 2012