| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a rotary nozzle which can be fully rotated even if an outer diameter of a rotor is decreased.SOLUTION: A rotary nozzle comprises a rotor 1 of a bottomed cylindrical shape which includes a cavity part. The rotary nozzle includes: a nozzle 3 which is radially formed towards an outer peripheral side from the cavity part 2 at a predetermined angleθwith respect to a central axis X, and of which a tip is inclined in a rotation direction with respect to a base end part; a taper pore 4 of which a diameter is gradually increased from the cavity part 2 side to the base end part side; and a spiral body 5 formed along a surface of the taper pore 4. The spiral body 5 is so formed as to give a rotational force in a direction same as a direction of rotation which occurs by a reaction force when a fluid is jetted through the nozzle 3.</p> |
