| 摘要 |
<p>Fluid distributor for driving pistons and turbines has an axial passage for receiving a power jet, >=1 lateral control passage a receiver with concave walls for preventing the adherence of the jet, this receiver communicating with >=1 exit, and closing device for controlling the orifices communicating with the lateral passages. The closing device comprising a plastics, esp. PTFE perforated disc can open the orifices for placing the corresp. lateral passage in communication with air under a sub-atmospheric, super-atmospheric or ambient pressure, and for closing these orifices in order to produce a sub-atmospheric pressure in the passage in order to oscillate the jet. The distributor can operate as oscillator at high frequencies e.g. 2500 Hz, and can have relatively large dimensions.</p> |
