工厂里排除厂房中的大量余热,主要是由有组织的自然通风来保证。目前我市具有高温作业的厂房,多半安装了手动开启窗扇的天窗,这种天窗只有当承风面窗口关闭,而背风面窗口开启时,才能保证排风作用。但由于缺乏便于调节的机械转动装置,在紧张生产的条件下,随风向的变化调节窗扇( The exclusion of a lot of waste heat in the factory is mainly guaranteed by organized natural ventilation. At present, the city has a high temperature operation of the plant, most of the manual installation of a sash of the skylight, this skylight only when the bearing surface window is closed, and the leeward side window is open, to ensure that the exhaust effect. However, due to the lack of a mechanical turning device that is easy to adjust, the sash is adjusted according to the change of the wind direction under intense production conditions