近年来笔者在各种刊物上见到不少关于防排烟系统设计、施工方面的文章,内容涉及面很广,但感觉在某些问题上总是有多种解释,观点很难统一。在很多设计工程中,防火阀选型错误,设置位置不合理的现象屡见不鲜。本文就此问题介绍防火阀的工作原理及其性能,分析防火阀在通风、空调及防排烟系统中的应因地制宜合理设置和选用防火阀。 In recent years, I have seen many articles on various aspects of the design and construction of smoke control systems in various publications. The content covers a wide range of topics. However, there are always many explanations on some issues and the views are hard to unify. In many design projects, fire damper selection error, the phenomenon of setting an unreasonable position is not uncommon. This paper introduces the working principle and performance of the fire damper on this issue, analysis of fire damper in the ventilation, air conditioning and smoke control system should be reasonable settings and selection of fire damper.