| 摘要 |
<p>The disclosure relates to a power generating device which is desirably a tidal power generating device. A plurality of propellers (1) are mounted on the power generating device which are driven by sea water. The power generating device includes a height adjustment means comprising a plurality of rollers (26) which ride on or in support members (20) so as to alter the vertical positioning of the propellers in use. Preferably, springs (28) bear against the rollers. A float member (13) may be provided on which several of the rollers are mounted. A pump (20) is provided in the float member which enables the level of water inside the float member to be adjusted as required. The propellers are connected to gears to an electrical generator and thus can produce electricity. The invention also relates to the water or air driven propeller (1). The propeller is of a lightweight construction and of a design wherein the vanes (3) of the propeller have a defined angle of curvature which results in enhanced performance of the propeller. In use, the propeller is not substantially enclosed or surrounded by any mounting means.</p> |
