【摘要】 为防止新型冠状病毒在核酸采样室内人员之间发生交叉感染，以普通核酸采样室为研究对象，采用欧拉-拉格朗日法计算咽拭子检测过程中携带病毒的颗粒物扩散规律，分别采用加强机械通风和设置局部吸气设备2种方法进行通风方案优化。结果表明：在核酸采样室内进行咽拭子检测的过程中，携带病毒的颗粒物可以在房间内扩散并持续数分钟；加强机械通风可明显提高室内携带病毒颗粒物的置换效率，但也有在空间范围内迅速扩散的问题；设置局部吸气设备可在较短时间内达到迅速减少室内病毒颗粒物的目的。更多还原

【Abstract】 To prevent cross infection of COVID-19 in nucleic acid sampling room, the diffusion law of particles carrying virus in the process of pharyngeal swab detection is calculated by Euler-Lagrange method taking the common nucleic acid sampling room as the research object. The ventilation scheme is optimized with strengthening mechanical ventilation and setting local suction equipment. The results show that the virus-carrying particles can spread in the room for several minutes during pharyngeal swab detection in nucleic acid sampling room. Strengthening mechanical ventilation can significantly improve the replacement efficiency of indoor virus particles, but it also can cause the rapid diffusion in sampling room. Setting local air admission equipment can quickly reduce indoor virus particles in a short time.更多还原