| 摘要 |
PURPOSE:To permit to adjust continuously the deviating angle of blow-off air by equipping the blow-off port with an aspect ratio changing means which changes the aspect ratio of a nozzle continuously. CONSTITUTION:The control port 6 of an air blow-off port 1 is the one side 5a of the throat section 5 of the nozzle 4 and is held in released condition at all times, therefore, fluid, blown off out of the tip end of the duct 2 deviates to the right in the diagram along the side wall 7 at all times. When a servomotor 84 is put ON, a cam 83 is rotated to move a rod 82 upwardly, a plate 81a is pushed up and a space between the plates 81a, 81b has become (b2), the plate 81b begins to move. When the rod 82 is moved upwardly, the aspect ratio is reduced gradually and the deviating angle of the blow-off air is reduced. The deviating angle is changed with respect to the aspect ratio continuously in such manner, therefore, the direction of blown off air may be changed continuously when the rod 82 is moved continuously into the up-and-down direction thereof. |
