Patent Number: 6,168,517

Title: Recirculating air mixer and fan with lateral air flow

Abstract: An air circulation and mixing device is disclosed which can cover a ceiling air ventilation duct, taking air discharged from the duct and drawing air at the room's ceiling, mixing the two, and redirecting the mixed air so that it is discharged radially and parallel to the ceiling, rather than directly downwardly. The device has an open frame whose sides may be covered with removable air filtration media and which forms a primary interior having a lower aperture and normally an upper aperture. An open-sided grille below the lower aperture forms a secondary space. A fan is mounted within the primary space and turns blades within the lower aperture and a disk at the bottom of the secondary space. An annular plate surrounding the fan housing blocks downward flow of incoming air and forces the air to flow radially outwardly around the edge of the plate, thus also insuring good mixing with the incoming ceiling air. The rotating disk receives air blown downwardly through the lower aperture and redirects it radially outwardly through the openings in the side of the grille, such that airflow becomes horizontal and parallel to the ceiling, so that the air flow slows and the air becomes gradually dispersed throughout the entire room. The device can also be mounted over a through-wall air duct outlet by using a duct extension.

Inventors: Cook; E. F. (San Diego, CA)


International Classification: F24F 13/04 (20060101); F24F 7/007 (20060101); F24F 007/007 ()

Expiration Date: 01/02/2018