| CPC A61L 9/20 (2013.01) [B01D 46/0028 (2013.01); A61L 2202/11 (2013.01); A61L 2209/12 (2013.01); A61L 2209/14 (2013.01); B01D 2257/91 (2013.01); B01D 2259/804 (2013.01)] | 19 Claims |
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1. A system comprising:
an elongated air duct having a first end and an opposing second end, wherein the air duct is installed within an indoor space, wherein the air duct includes a negative pressure chamber and a positive pressure chamber each disposed within the air duct, wherein a wall of the negative pressure chamber has a plurality of intake openings through which the negative pressure chamber is in fluid communication with the indoor space in which the air duct is installed, wherein a wall of the positive pressure chamber has a plurality of discharge openings through which the positive pressure chamber is in fluid communication with the indoor space;
a plenum chamber connected to the first end of the air duct, wherein the plenum chamber defines an enclosed space, wherein the negative pressure chamber and the positive pressure chamber are each in fluid communication with the plenum chamber, wherein the plurality of intake openings and the plurality of discharge openings are distributed along substantially all of a length of the air duct extending between the first end and the second end of the air duct; and
a fan configured to draw indoor air from the indoor space into the plenum chamber through the intake openings and the negative pressure chamber, wherein the fan is further configured to discharge the indoor air drawn into the plenum chamber from the plenum chamber back into the indoor space through the positive pressure chamber and the discharge openings.
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