吹吸式通风是利用吹、吸气流的联合作用控制污染物的一种通风方法。它具有工作稳定可靠、不影响工艺操作、排风量小等优点,在国内外得到日益广泛的应用。吹吸式通风系统的工作效果取决于送风气流、吸气气流及横向(或上升)气流三股气流的联合作用。因此,在设计计算 Blow-and-breath ventilation is a ventilation method that utilizes the combined action of blowing and insufflation to control contaminants. It has the advantages of stable and reliable operation, does not affect the process operation, and has a small amount of exhaust air. It is widely used at home and abroad. The working effect of the blowing and sucking ventilation system depends on the combined action of the supply air flow, the suction air flow, and the three (or up) airflows. Therefore, in the design calculation