本文用正交试验法研究了径向进气凤扇的结构参数对风扇性能的影响规律。研究表明,风扇的舌部形状、舌部间隙、舌部倾角和蜗壳大小对风扇的性能有较大的影响。通过试验,得出了单调下降的性能曲线,获得了适合联合收割机应用的径向进气风扇模型,并经清选试验台实验验证,得到了良好的效果。 In this paper, the influence of the structural parameters of radial inlet fan on the fan performance is studied by orthogonal test. Research shows that the shape of the fan tongue, tongue gap, tongue inclination and volute size have a greater impact on the performance of the fan. Through the experiment, the performance curve of monotonous descent was obtained, and the radial air intake fan model suitable for the combine harvester was obtained. The model was validated by the cleaning test bench, and the good result was obtained.