Claims
- 1. A filter system for passive filtration, the system comprising:
a housing with an intake and an outlet; a pleated carbon filter disposed between the intake and the outlet for filtering out vapors entering the intake; and a hydrophobic solution dispersed about the pleated carbon filter to inhibit adsorption of water thereby increasing the adsorption capacity of the pleated carbon filter especially in high relative humidity environments and wherein the hydrophobic solution is selected so that it does not decrease the adsorption capacity of the carbon filter.
- 2. The filter system of claim 1 in which the pleated carbon filter is made of carbon felt material.
- 3. The filter system of claim 1 in which the hydrophobic solution includes a silane composition.
- 4. The filter system of claim 1 in which there is approximately one pleat per inch.
- 5. The filter system of claim 2 in which the carbon felt material is approximately 5 mm thick.
- 6. The filter system of claim 1 in which the housing is approximately 4 inches deep and each pleat is approximately four inches high.
- 7. The filter system of claim 1 further including one or more reactive metals and TEDA disposed in the carbon filter to render toxic gases entering through the intake non-toxic.
- 8. The system of claim 7 in which the reactive metals are chosen from the group consisting of copper, zinc, molybdenum and silver.
- 9. The system of claim 1 further including a high efficiency particle filter disposed adjacent the intake opening of the housing for filtering aerosols before they enter the intake.
- 10. The system of claim 9 further including one or more lower efficiency filters adjacent the high efficiency filter.
- 11. The system of claim 1 further including a blower disposed at the outlet of the housing to increase the flow through the intake.
- 12. A filter system for passive filtration, the system comprising:
a housing with an intake and an outlet; a pleated carbon filter made of carbon felt material disposed between the intake and the outlet for filtering out vapors entering the intake; and a hydrophobic silane solution dispersed in the pleated carbon felt material to inhibit adsorption of water by the carbon thereby increasing the adsorption capacity of the pleated carbon filter especially in high relative humidity environments.
- 13. The filter system of claim 1 further including one or more reactive metals and TEDA to render toxic gases entering through the intake non-toxic.
- 14. The system of claim 13 in which the reactive metals are chosen from the group consisting of copper, zinc, molybdenum and silver.
- 15. The system of claim 12 further including a high efficiency particle filter disposed adjacent the intake opening of the housing for filtering aerosols before they enter the intake.
- 16. The system of claim 15 further including one or more lower efficiency filters adjacent the high efficiency fitter.
- 17. The system of claim 1 further including a blower disposed at the outlet of the housing to increase the flow through the intake.
- 18. A filter system for passive filtration, the system comprising:
a housing with an intake and an outlet; a pleated carbon filter disposed between the intake and the outlet for filtering out vapors entering the intake; a hydrophobic solution dispersed about the pleated carbon filter to inhibit adsorption of water thereby increasing the adsorption capacity of the pleated carbon filter especially in high relative humidity environments; a high efficiency particle filter disposed adjacent the intake opening of the housing for filtering aerosols before they enter the intake; and a blower disposed at the outlet of the housing to increase the flow through the intake.
- 19. The filter system of claim 18 in which the pleated carbon filter is made of carbon felt material.
- 20. The filter system of claim 18 in which the hydrophobic solution includes a silane composition.
- 21. The filter system of claim 18 further including one or more reactive metals and TEDA to render toxic gases entering through the intake non-toxic.
- 22. The system of claim 21 in which the reactive metals are chosen from the group consisting of copper, zinc, molybdenum and silver.
- 23. The system of claim 18 further including one or more lower efficiency filters adjacent the high efficiency filter.
- 24. A room equipped with a filter system comprising:
a plurality of tiles forming a ceiling; and select tiles replaced with passive filters each including:
a housing with an intake facing the room and an outlet opposing the intake, a pleated carbon filter disposed between the intake and the outlet for filtering out vapors entering the intake, and a hydrophobic solution dispersed about the pleated carbon filter to inhibit adsorption of water thereby increasing the adsorption capacity of the pleated carbon filter especially in high relative humidity environments.
- 25. The system of claim 24 in which the housing is approximately 2 feet wide by 10 inches deep.
- 26. The system of claim 24 in which the housing is 2 feet long.
- 27. The system of claim 24 in which the housing is 4 feet long.
- 28. The system of claim 24 further including a high efficiency particle filter disposed adjacent the intake opening of the housing for filtering aerosols before they enter the intake.
- 29. The system of claim 28 further including on e or more lower efficiency filters adjacent the high efficiency filter.
- 30. The system of claim 24 further including a blower disposed at the outlet of the housing of selected filters to increase the flow therethrough and to generate a pressure above the ceiling greater than the pressure below the ceiling.
- 31. The system of claim 24 further including one or more reactive metals in the carbon filter to render toxic gases entering through the intake non-toxic.
- 32. The system of claim 24 in which the pleated carbon filter is made of carbon felt material.
- 33. The system of claim 24 in which the hydrophobic solution includes a silane composition.
- 34. The system of claim 24 in which there is approximately one pleat per inch.
- 35. The system of claim 32 in which the carbon felt material is approximately 5 mm thick.
- 36. A room equipped with a filter system comprising:
a plurality of tiles forming a ceiling; and select tiles replaced with passive filters each including:
a housing with an intake facing the room and an outlet opposing the intake, a pleated carbon filter disposed between the intake and the outlet for filtering out vapors entering the intake, a hydrophobic solution dispersed about the pleated carbon filter to inhibit adsorption of water thereby increasing the adsorption capacity of the pleated carbon filter especially in high relative humidity environment, and a blower disposed at the outlet of the housings of selected filters to increase the flow therethrough and to generate a pressure above the ceiling greater than the pressure below the ceiling.
- 37. A method of making a passive filtration system, the method comprising:
treating a carbon filter material with a hydrophobic solution chosen such that the hydrophobic solution inhibits the adsorption of water by the carbon filter material; and pleating the carbon filter material and disposing it in a housing to form a filter.
- 38. The method of claim 37 in which the pleated carbon filter is made of carbon felt material.
- 39. The method of claim 37 in which the hydrophobic solution includes a silane composition.
- 40. The method of claim 37 in which there is approximately one pleat per inch.
- 41. The method of claim 38 in which the carbon felt is approximately 5 mm thick.
- 42. The method of claim 37 further including treating the carbon filter material with one or more reactive metals and TEDA to render toxic gases entering through the intake non-toxic.
- 43. The method of claim 42 in which the reactive metals are chosen from the group consisting of copper, zinc, molybdenum and silver.
- 44. The method of claim 37 further including adding a high efficiency particle filter disposed adjacent the intake opening of the housing for filtering aerosols before they enter the intake.
- 45. The method of claim 44 further including adding one or more lower efficiency filters adjacent the high efficiency filter.
- 46. The method of claim 37 further including adding a blower disposed at the outlet of the housing to increase the flow through the intake.
- 47. The method of claim 37 further including the step of replacing select ceiling tiles in a room with the treated carbon filter material.
Parent Case Info
[0001] PRIORITY CLAIM
[0002] This application claims priority from Provisional Patent Application Serial No. 60/284,321 filed Apr. 17, 2001.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60284321 |
Apr 2001 |
US |