| 摘要 |
A spray nozzle for a showerhead is controllable to deliver a pulsating spray or a continuous spray or a variable combination of the two. Water entering at the inlet of the nozzle is adjustably divided into two flow paths one of which leads to a group of spray outlets to provide a continuous spray and the other of which leads to a further group of spray outlets via a rotary valve to provide a pulsating spray. The rotary valve comprises a cylindrical valve chamber with a rotary valve member therein, the valve member having turbine blades so that in use water entering at the valve inlet drives the valve member in rotation, and pivoted flaps mounted on the valve member which in use are centrifugally urged against the cylindrical wall of the valve chamber, there to intermittently occlude the further group of spray outlets, which open from the cylindrical wall, and to provide the pulsation in the spray, without jamming the rotary valve member.
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