US 11,988,406 B2
Return air grille air purifier
Oludamilola Adesanya, Avon, IN (US); and Peter Johannes McKinney, Boulder (IN)
Assigned to CARRIER CORPORATION, Palm Beach Gardens, FL (US)
Filed by Carrier Corporation, Palm Beach Gardens, FL (US)
Filed on Sep. 17, 2021, as Appl. No. 17/478,065.
Claims priority of provisional application 63/080,507, filed on Sep. 18, 2020.
Prior Publication US 2022/0090817 A1, Mar. 24, 2022
Int. Cl. B01D 46/00 (2022.01); B01D 46/10 (2006.01); B03C 3/155 (2006.01); F24F 13/08 (2006.01); F24F 13/28 (2006.01)
CPC F24F 13/085 (2013.01) [B01D 46/0005 (2013.01); B01D 46/10 (2013.01); F24F 13/084 (2013.01); F24F 13/28 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A return air grille air purifier comprising:
an air filtration system comprising:
a media filter; and
a filter enhancement module comprising an ionization array configured to charge particles in an airstream passing through the filter enhancement module and towards the media filter;
a first housing;
a return inlet grate hingedly secured to the first housing, the return inlet grate covering an opening in the first housing in a closed position and allowing access to the opening in an open position; and
a second housing configured to contain the air filtration system including the media filter and the filter enhancement module, the second housing contained within the first housing in a closed position, the second housing configured to move outward with the air filtration system at least partially out of the opening of the first housing in an open position, the media filter being removably accessible from the second housing in the open position.