| 摘要 |
PURPOSE:To obtain an air stream feeling close to that obtained in natural air flow by using the fluid element principle in two steps, wherein a feedback type self-oscillating fluid element is used as the first step and a main stream deviating fluid element as the second step. CONSTITUTION:As a fluid element A of the first step, a feedback type self-oscillating fluid element is used. This element is constituted by a nozzle part 6 having a guide vane 5 for guiding a part of total air stream sent within an air duct casing 4, guides 71 and 72 for guiding an air stream blown off from the nozzle part 6, and passages 81 and 82 for feeding back a part of the air stream flowing along the wall faces of the guides 71 and 72. On the other hand, as a fluid element B of the second step, a fluid element consisting of guide vanes 111 and 112 for guiding the main stream blown off from a slit-shaped main stream blow-off port 10, joining ports 121 and 122 for guiding a control air current from cotrol ports 21 and 22 in the vicinity of the blow-off port 10, and a circular cylinder 3 provided in the front surface of the blow-off port 10, is employed. |
