| 摘要 |
A jet actuator, particularly for rotating pulse sprinklers, includes: a spout (3) and a nozzle (7) for generating a jet; a deflector (10, 100) which can oscillate freely in a transverse direction between a position that lies completely outside the jet and a position in which it is immersed in the jet to the maximum extent; a supporting arm (8) for supporting the deflector to transfer the energy drawn from the jet; the deflector (10) has a main surface that has a curved and convex shape that is approximately cylindrical, with its axis substantially at right angles to the jet, and remains substantially aligned with the stream of the jet so as to generate a negative pressure force produced by fluid dynamics, and optionally has a secondary surface which is preferably flat, is inclined with respect to the main one at a high angle, and can interact with the jet to produce, at a critical incidence value, the separation and complete breakup of the fluid column on the curved main surface. 0
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