Performance Enhancement of Cross-Flow Fan by Inlet Guide vane

考察了进口导叶对横流风机性能的影响。通过在吸气区安装导叶，横流风机的性能比没有导叶的情况下更加高压和高效。导叶产生与转子旋转方向相反的进气预旋。在高流量区，由于吸力叶栅的功随着气流的旋转而增大，从而获得了高压力和高效率，而且吸力叶栅的前缘分离在大流量时更容易避免。此外，在流动区域中，可以抑制转子吸入口中涡旋侧的循环流动。因此，与没有导向叶片的结果相比，在低功率下获得了高效率

The effect of the inlet guide vane on the performance of the cross-flow fan was examined. By installing guide vane in the suction region, the performance of the cross-flow fan becomes more high pressure and high efficient than the case without the guide vane. The prerotation of the inlet flow which is counter directional with the rotation of the rotor is generated by the guide vane. In the high flow region, the high pressure and high efficiency are obtained since the suction cascade work increases by the orerotation of the flow, and since the leading edge separation of the suction cascade is more avoided to high flow. Moreover, in the flow region, it is possible to suppress the circulating flow in scroll side in the rotor suction inlet. Therefore, the high efficiency is obtained in the low power compared to the results without the guide vane