针对矿井老型号轴流式扇风机的结构缺陷，结合现场实际进行了技术改造，提高了主扇运动效率，收到了显著的经济效益。
This is directed against structure defect of mine old type tube - axial fan, make technique transform to combine practice, raises main fan running efficiency, receives notable economic benefits.
目前轴流式通风机在煤矿是普遍的主通风设备，文章阐述了变频器在轴流式风机中的应用，以解决主扇调整风量和节能降耗的问题。
Axial flow fan is the main ventilation device presently. This paper introduces the application of axial flow fan, settles saving energy problem and air regulation problem.
建井期间未构成全风压通风系统时，通常采用局扇供风，往往造成瓦斯积聚，为此选用轴流式大功率局部扇风机供风，是解决长距离通风的最佳选择。
When auxiliary fan without enough pressure used in shaft construction, it was possible to lead gas concentration. The powerful axial flow auxiliary fan may solve the problem.
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