| 摘要 |
<p>The motor has a casing 6 defining a passageway extending between inlet 11 and outlet 12 apertures, and a rotor 1 mounted to rotate within the passageway about a fixed axis. The radial distance between the rotor axis and adjacent walls of the passageway is greater on one side of the rotor axis than the other, and a plurality of vanes 9 are movably mounted on the rotor. The vanes assume a position relative to the rotor such that the passageway is always obstructed by the vanes and rotor which extend across the full width of the passageway between the adjacent walls. As the rotor is offset towards one side of the passageway, and therefore the surface area presented by the vanes to water flowing from the inlet to the outlet is greater on one side of the rotor than the other, a torque is applied to the rotor. In an alternative arrangement the vanes are instead pivoted to the rotor and are arcuate (Figs. 7 to 10). <IMAGE></p> |
