An air diffuser assembly has a plurality of hat-shaped members which individually fit over individual parallel spaced panels of a suspended ceiling structure to locate upper and lower flange baffles of adjacent members in the spaces between the panels. The upper baffle or weir forms a throat between the free edge thereof and the vertical portion of the adjacent members to regulate the flow of air therethrough while the lower baffle acts as a vane to deflect the air flowing through the throat along the ceiling to be diffused throughout the room.
An air diffuser for a modular drop ceiling construction in which an annular discharge opening is defined by the inner margin of the ceiling framework members forming a square or rectangular opening and the outer margin of a ceiling panel positioned concentrically in the opening and suspended at the corners from the framework. Air is directed by a conduit and hood against the backside of the ceiling panel and directed outwardly through the rectangular annular space around the margin of the panel. Lateral airflow outwardly from the diffuser along the adjacent ceiling is provided by shaping the margins of the opening to provide either a beveled or step outline in cross section.
An air diffuser for use in drop ceiling construction is described in which a discharge air pattern extending substantially parallel to the surface of the ceiling is achieved. The air diffuser comprises a hood forming a plenum chamber with a plurality of parallel elongated ceiling panels which are spaced apart to form slotted discharge openings. The elongated edges of the panels are formed in an arc which is tangential with the flat ceiling defining surfaces of the panels. A deflector member is secured along one curved edge of each panel, the deflector being curved in a reverse direction and extending in overlapping relationship to the opening between the panels. Air from the plenum chamber follows the contour of the deflector and around the curved edge of the adjoining panel, discharging along the flat ceiling forming surface of the panel.
Heating, ventilation and air conditioning systems for busses achieve improved air distribution by the use of ducts to distribute the air throughout the passenger compartment. The ducts have a varying cross sectional area so that the impedance to air flow appears constant at all points along the duct. The quantity of air distributed from each of a plurality of vents is substantially even is effectively equalized.
An electric hair dryer is connected to a portable housing having a plurality of angularly adjustable housing segments. The air passes through the segments and out spaced air outlet openings formed in the housing segments.
