Air flow direction control apparatus and the method thereof

Details Air flow direction control apparatus and the method thereof Air flow direction control apparatus and the method thereof

1994-04-08

1995-08-22

Joyce, Harold

Ventilation

Having inlet airway

Including automatic control means

25112901, 251229, 251250, 454258, 454313, 454318, 454319, F24F 1315

Patent

active

054434203

ABSTRACT:
The direction of air flow in an air blower is controlled by a plurality of rotationally adjustable blades (vanes) extending across an air flow passage. A motor is connected to the blades for rotating the blades between passage-opening and passage-closing positions and intermediate positions therebetween. A sensor senses the angular position of the blades and supplies a signal to a controller which compares that signal to a signal representative of a selected angular position of the blades. If the blades become-displaced by a force independent of the motor, the sensor signals the controller of such displacement, whereupon the motor is actuated to return the blades to the selected position.

REFERENCES:
patent: 2997938 (1961-08-01), Sievert et al.

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