US 7,566,359 B2
Ultraviolet lamp with absorptive barrier
Rakesh Goel, Irving, Tex. (US); and Ammar Kailani, Richardson, Tex. (US)
Assigned to Lennox Manufacturing Inc., Richardson, Tex. (US)
Filed on Nov. 07, 2006, as Appl. No. 11/557,334.
Prior Publication US 2008/0121823 A1, May 29, 2008
Int. Cl. B01D 39/00 (2006.01); A61L 2/08 (2006.01); G01J 1/32 (2006.01)
U.S. Cl. 96—224  [422/24; 250/205] 27 Claims
OG exemplary drawing
 
1. A heating, ventilating and air conditioning (HVAC) system, comprising:
an air plenum having an air filter located therein that is susceptible to degradation upon exposure to light;
a light bulb located within said plenum, said light bulb having a first side proximate said air filter and having a light-absorptive barrier coupled thereto, said light-absorptive barrier configured to reduce light transmission from said light bulb to said air filter to thereby inhibit degradation of said air filter; and
an air purifier that is light activated, said light bulb being located in said plenum between said air filter and said air purifier, wherein said light bulb has a second side proximate said air purifier, and wherein light emanating from said second side is incident on said air purifier with sufficient intensity to activate said air purifier.