| 摘要 |
A multi-louvered air discharge device for a forced air ventilation system, capable of focusing a concentrated stream of air from two discharge openings on any point along the perimeter of a hemisphere surrounding the device. The two discharge openings are each equipped with vanes to direct the flow of air issuing therefrom. The sets of vanes are controlled together so that the air issuing from each set is directed toward a predetermined adjustable point by a control system.
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