Fluid handling – Flow affected by fluid contact – energy field or coanda effect – Means to regulate or vary operation of device
Patent
1987-08-06
1989-01-31
Joyce, Harold
Fluid handling
Flow affected by fluid contact, energy field or coanda effect
Means to regulate or vary operation of device
98 412, 137 73, 137 80, 2512495, F24F 1100, F24F 13062
Patent
active
048008044
ABSTRACT:
An air diffuser adapted for mounting in a building for controlling air pressure within a space, the diffuser comprising a tile such as can be placed in a ceiling and having an air inlet side and an air discharge side, a wall providing an air flow port in the tile for allowing the flow of air from the inlet side to the discharge side, a damper adapted in one position to substantially seal against the wall adjacent the port to prevent air flow through the port, and in other positions removed from the wall to allow variable air flow through the port, an electrically operated actuator connected to the building and/or the tile, and to the damper for moving the damper toward or away from the wall, guide posts on the tile extending generally axially of the direction of movement of the damper toward and away from the wall, and follower apertures in the damper slidable over the guide posts to allow substantially only linear movement of the damper. A temperature and/or smoke sensor is preferably positoned on the tile and/or the damper for communication with at least one side of the tile, and an electrical circuit is connected to the sensor and the actuator and adapted to energize the actuator to move the damper toward or away from the wall adjacent the port at predetermined temperature and/or smoke levels existing on at least one side of the tile.
REFERENCES:
patent: 432744 (1890-07-01), Adams
patent: 3289686 (1966-12-01), Tyler, Jr.
patent: 4181253 (1980-01-01), Barlow
patent: 4338961 (1982-07-01), Karpenko
patent: 4488566 (1984-12-01), Hicks
Joyce Harold
Tennessee Plastics, Inc.
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