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混流区和中心旋流区是内旋流加速旋风集尘器的主要特征之一。该文研究了内旋流加速旋风集尘器混流区和中心旋流区的流场分布，计算出各旋流区的速度，导出流场分布的空间向量。实验表明混流区的切向速度分布为准自由涡形式，准自由涡指数为０．５，在加速气流作用下，混流区切向速度显著增加，最大切向速度２２．６ｍ／ｓ，加速了粉尘分离；混流区轴向速度沿径向递增，最大轴向速度在外边壁处（１．５１ｍ／ｓ），径向速度为向心向；中心旋流区切向速度为强制涡，轴向速度高达４０ｍ／ｓ，径向速度较小且为离心向。
The mixed zone and the central swirl zone are one of the main characteristics of the cyclone-accelerated cyclone dust collector. In this paper, the flow field in the cyclone and the cyclone is accelerated by the cyclone, the velocities in each cyclone are calculated, and the spatial vectors of the flow field are derived. The experimental results show that the tangential velocity distribution in the mixed zone is a quasi-free vortex with a quasi-free vortex exponent of 0.5. The tangential velocity of the mixed zone increases significantly under the accelerating airflow, with the maximum tangential velocity of 22.6m / s, accelerating the dust The maximum axial velocity is at the outer wall (1.51m / s) and the radial velocity is centripetal; the tangential velocity in the central swirl zone is forced vortex and the axial velocity is up to 40m / s, radial velocity is small and centrifugal direction.