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风机由于气流在叶轮流道中流动方向不向,风机的形式也就各异,沿径向流动的为离心式,沿轴向流动的为轴流式,沿斜向流动的为混流式。混流式又称子午加速式或纵向加速轴流式,一般称为静调轴流式风机。这三种风机各有其特点:离心式风机压力系数高,流量系数小,因而比转数就低,效率与负荷的关系曲线较陡。纯轴流式风机的空
Fan flow in the impeller flow channel due to the direction of flow is not, the fan also has different forms, along the radial flow for the centrifugal, axially flowing axial flow, along the oblique flow for the mixed flow. Francis also known as radial acceleration or longitudinal acceleration axial flow, commonly known as static axial flow fan. The three fans have their own characteristics: Centrifugal fan high pressure coefficient, flow coefficient is small, and therefore lower than the number of revolutions, the relationship between efficiency and load curve is steep. Pure axial flow fan empty