本文针对装有自动喷洒灭火系统的商场和购物中心，在规定了＂设计火灾规模＂（即疏散时间内火灾范围为周长１２ｍ，放热速率为５ＭＷ）的条件下，提出了蓄烟拱的规模、烟流量、烟层温度、档烟垂壁尺寸、排烟口数量和面积等计算公式、数据和实验曲线，讨论了排烟系统的基本功能、挡烟垂壁的设置、自动洒水对烟气的冷却作肝、进气口的风速、自然排烟和强制排烟等具体问题。 This article proposes a smoke storage arch for shopping malls and shopping malls equipped with automatic sprinkler systems under the conditions of “designed fire scale” (that is, a fire perimeter of 12 m in the evacuation time and a heat release rate of 5 MW). The formulas, data and experimental curves for scale, smoke flow, smoke temperature, smoke wall size, number of smoke outlets, and area, etc., discussed the basic functions of the smoke extraction system, the setting of the smoke wall, and automatic watering of smoke Gas cooling is used for specific issues such as liver, air intake, natural exhaust, and forced exhaust.