| 摘要 |
An undershot waterwheel or paddle wheel comprises at least two sets of concentric blades 31, 32 supported to be driven by fluid flow. The blades supported at a smaller diameter rotate faster so each blade set rotates at a different rate. Gears 109, 110, 121, 122 are provided at both ends of the rotors, and there is a connection e.g. shaft 100 between the two ends, to ensure that the blade supports 34, 35, 36 at each end move together to prevent twisting of the rotor blades 31, 32. |
