手术室滑动门开启条件下流场测试分析  

Analysis of the Flow Field Testing under Operating Room’s Sliding Door Opening Conditions

作　　者：史赫扬 Shi Heyang(Sichuan Academy of Medical Science and Sichuan Provincial People's Hospital,Chengdu,610072)

机构地区：[1]四川省医学科学院·四川省人民医院,成都610072

出　　处：《制冷与空调（四川）》2024年第5期672-678,共7页Refrigeration and Air Conditioning

摘　　要：通常情况下,手术室内部的气压往往高于室外大约20Pa,这是为了避免室外受污染空气侵入室内,以减少伤口感染的风险。然而当手术室门打开时,手术室和外部走廊的压差将消失,这会导致手术室的密封性失效。如果在门开启期间有人员进出手术室,这会在门口引起额外的干扰。采用超声波三维风速计测量了人员进出期间门口瞬时的气流变化。结果显示当采用类似使用滑动门,保持初始正压为20Pa,在开门期间排风量降至初始值的50%等措施,即使没有人进出,开关门的过程中仍会有少量走廊受污染的空气进入手术室。此外当有人进入或者离开手术室的瞬间,走廊的受污染空气仍然会侵入手术室。相对于无人员进出的工况,有人员进出会使得进入手术室的空气量增加83.8%,大约0.269m3,离开手术室的空气增加13.6%,大约0.424m3。本研究为手术室通风的设计提供了指导。In general,the air pressure between indoors and outdoors is typically about 20Pa,aiming to prevent the infiltration of contaminated air and reduce the risk of wound infection.However,the pressure difference between indoors and outdoors disappears during human movement,compromising the sealing of the operating room.The processes of door opening and human entering can cause additional disturbance to the air exchange at the doorway.This study employed ultrasonic three-dimensional anemometry to measure the instantaneous airflow at the doorway during human movement.The results indicate that the process of door opening can cause the ambient air to enter the operating room,even with the measures that keep the initial positive pressure of 20Pa with a sliding door and reduce the exhaust air volume by 50%.Furthermore,the ambient contaminated air can still intrude into the operating room when humans enter or leave.Compared with the condition without humans entering or leaving the operating room,the air volume entering the operating room increased by 83.8%(about 0.269m3),and the air leaving the operating room increased by 13.6%(about 0.424m3).This study provides guidance for the design of the ventilation system in the operating room.

关 键 词：手术室 门开启 室内外空气交换 活塞流 

分 类 号：TU5[建筑科学—建筑技术科学]