马达滑靴副, 过流部件, 数值模拟, 优化设计

In order to improve the tear situation of slipper pair in the outer fringe and low efficiency of the fan, the flow field of lubrication film under the bottom of slipper was analyzed particularly, some regular concaves convergenting along radial in slipper's bottom face were machined; optimization was done for the main flow parts through numerical experiments. The structure of impeller, guide vane, spinner, hub, and rectification object were improved.The results indicate that new concave design improves the wear situation in the outer fringe, the total amount of wear reduces 28.77%, total pressure efficiency of the fan increases from 73.39％ to 77.11％.