| 摘要 |
PURPOSE:To enable the flow to be deflected in the wide range, i.e. to any three dimensional arbitrary direction, by arranging a nozzle having a restriction extending from the entire circumference towards the axis of the flow passage, and further by mounting a guide wall on the downstream side of the nozzle and a bias screening plate on the upstream of the nozzle. CONSTITUTION:The flow direction control device is provided with a flow dispersing member 6 which disperses the flow from the centre (axis) of the flow passage which leads the flow from the blower towards its periphery. A circular nozzle 7 having a restriction 8 which extends from the entire circumference towards the axis of the flow passage 5 is formed in the fluid passage 5, and also as guide wall 9 which surrounds the nozzle 7 is placed on the down-stream of the nozzle 7. Furthermore, a bias screening plate which shields the bias flow generated by the restriction 8 is formed on the upstream of the nozzle 7. This bias screening plate 10 is rotated about the rotating aixa 11 which coincides with the axis of the flow passage 5. Thus, according to this construction, the flow can be deflceted in wide angle range, verticaly or horizontally without generating air volume resistance or disturbing the stream line, by moving the bias screening plate 10 vetically or horizontally. |
