| 摘要 |
<p>A prandtl layer turbine has a longitudinally extending housing (14) having a fluid inlet port (60); a plurality of spaced apart members (12) rotatably mounted in the housing to transmit motive force between fluid introduced through the fluid inlet port and the members and to separate the fluid into at least two fluid streams; and, a fluid outlet port positioned on the housing for receiving each fluid stream. The prandtl layer turbine may be used in conjunction with a cyclone separator (94, 96) either to provide the motive force to draw a fluid through the cyclone separator or to both provide the motive force and to provide a second stage separation. The cyclone separator and turbine may be housed in a vacuum cleaner. A fan may be provided to assist in fluid flow through the turbine. Two turbines may be connected together whereby a first fluid is used to drive the first turbine and the first turbine is used to drive the second turbine which in turn provides motive force to a second fluid.</p> |
