1985-05-20
1986-10-14
Schwartz, Larry I.
98 4015, 98 4016, 98 413, 98 345, F24F 1306
Patent
active
046165592
ABSTRACT:
Variable flow of either primary air or of a mixture of primary and secondary air is provided to an enclosure by an air diffuser adapted for installation in an opening in the enclosure. Sleeve means is movably mounted within a housing of the air diffuser for movement between a closed position in which apertures of the housing are closed by the sleeve means and an open position in which they are open. Actuator means is engageable with the sleeve means for selectively moving the sleeve means between the closed and open positions and to positions therebetween so as to discharge a desired proportion of primary air through the apertures into a plenum to bypass the enclosure. Deflecting means is mounted on the housing for deflecting the primary air outwardly as it is discharged into the enclosure. The sleeve means may extend downward toward the deflecting means such that a passage of variable area is formed to further direct the primary air through the apertures. Alternatively, inlet reduction means may be included to decrease the pressure of the primary air in proximity to the apertures in the housing such that a desired proportion of secondary air is induced from the plenum through the apertures for discharge with the primary air into the enclosure. The air diffuser is particularly suited for installation in a false ceiling to provide a variable horizontal discharge of air. Automatic temperature control may also be provided.
REFERENCES:
patent: 4181253 (1980-01-01), Barlow
Pure Air Inc.
Schwartz Larry I.
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