Air Purifier System and Method
First Claim
1. A photocatalytic air purifier system comprising an outer housing, an ultraviolet or near ultraviolet (UV, 100 to 450 nm wavelength range) light source (photocatalyst-activating), air inlet port(s) and air outlet port(s), a variable speed fan and motor, and a cylindrical, replaceable, photocatalytic cartridge located concentrically about the longitudinal axis of the UV light source and closed to air flow at one end, such that air flow is directed inward through the photocatalytic cartridge walls and out the open end.
2 Assignments
0 Petitions
Accused Products
Abstract
The invention provides an air purification system and method for combining filtration, ultraviolet irradiation, and photocatalysis, in an annular geometry that maximizes the photocatalytic efficiency of the ultraviolet light in the deactivation of microbes and the photocatalysis of volatile compounds.
89 Citations
17 Claims
- 1. A photocatalytic air purifier system comprising an outer housing, an ultraviolet or near ultraviolet (UV, 100 to 450 nm wavelength range) light source (photocatalyst-activating), air inlet port(s) and air outlet port(s), a variable speed fan and motor, and a cylindrical, replaceable, photocatalytic cartridge located concentrically about the longitudinal axis of the UV light source and closed to air flow at one end, such that air flow is directed inward through the photocatalytic cartridge walls and out the open end.
-
2. The source of photocatalyst-activating UV irradiation may be any UV generating lamp or columnar array of light emitting diodes (LEDs), but in the preferred embodiment is germicidal.
-
10. The coaxial geometry of the invention permits scaling of unit dimensions to accommodate a wide range of UV light sources, UV power ranges, photocatalysts, substrate media, air flow rates, and noise level requirements.
-
11. The air inlet port area, annular area (between the outside of the cartridge and outer housing wall), the fan and fan-outlet port areas are all matched so as not to restrict air flow and to minimize air-rush noise.
Specification