通风设备的组成部分有：通风机、电动机、电控设备、扩散器、反风装置等。

The components of the ventilation equipment include ventilators, motors, electrical control equipment, diffuser, anti wind device, etc..

通风设备的作用是：向井下输送新鲜空气，稀释和排除有毒、有害气体，调节井下所需的风量、温度、湿度，改善工作条件，保证安全生产。

The function of ventilation equipment is to transport fresh air to the underground, dilute and remove toxic and harmful gases, adjust the required air flow, temperature and humidity, improve working conditions, and ensure safe production.