This invention discloses a fan, which is composed of ventilation device and vibration generating device.
本发明公开了一种风扇，包括通风装置与震动发生装置。
The communication device comprises an air vent, and the air vent is provided with the dustproof ventilation device.
所述通信设备包括通风口，在所述通风口处设有上述防尘通风装置。
The article analyzes specifically dust control for effectiveness reasonableness and introduces calculating methods of blow and exhaust wind volume of Push pull ventilation device.
对其烟尘控制的有效性和合理性作了具体分析，同时介绍了吹吸式通风装置送、排风量的计算方法。
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.
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。
Discussed the research status of natural ventilation device with the function of daylighting, point out the applications and the problems needed to be resolved in the future.
论述了具有自然采光功能的自然通风装置研究现状，指出该装置的应用场合和进一步要研究的问题。
Ventilation device includes fan frame, blade and driving mechanism. The blade wheel and driving mechanism are all set in fan frame.
通风装置包括扇框、叶轮以及驱动机构，叶轮与驱动机构均容设于扇框内，且驱动机构与叶轮连结并驱动叶轮转动。
Ventilation device includes fan frame, blade and driving mechanism. The blade wheel and driving mechanism are all set in fan frame.
通风装置包括扇框、叶轮以及驱动机构，叶轮与驱动机构均容设于扇框内，且驱动机构与叶轮连结并驱动叶轮转动。
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