重症监护型救护车空气净化系统设计与防护效果评价

Design and protection evaluation of air purification system in intensive care ambulance

目的研制一种重症监护型救护车空气净化系统,用于救护车伤病员室空气中悬浮微生物的过滤净化和消毒灭菌。方法综合Ti O2光触媒与高效空气过滤材料,设计一种救护车空气净化装置,通过光触媒实现对车厢内空气微生物的氧化分解,通过高效过滤器实现对空气尘埃粒子的高效过滤,测试空气洁净度和消毒效果对空气净化系统的作业效果进行评价。结果在空气净化系统正常运行状态下,救护车伤病员室内空气洁净度达到10万级,细菌菌落总数<1 CFU/(皿·15 min),满足重症监护作业对车厢卫生学环境的要求。结论救护车空气净化系统能有效实现对救护车伤病员室空气的消毒灭菌和过滤净化,满足运送途中对伤病员实施紧急救治和重症监护等作业的需求。

Objective To design and develop an air purification system for intensive care ambulances,which can effectively purify the air in the compartment and sterilize the microbes in the air.Methods By integrating titanium dioxide photocatalysts with air filtration materials,an air purification system was designed that was capable of effective sterilization of microbes in the air via photocatalytic oxidation and decomposition,and of effective filtration of particles in the air through HEPA filters.The protection effect was evaluated by air filtration and sterilization tests in accordance with the related national standards.Results The air cleanliness could reach the 100 000 level with bacteria counts no more than 1 CFU per pan for 15 minutes in the ambulance compartment when the air purification system worked normally,which could meet the demands of environmental hygienic standards for intensive care units.Conclusion The air purification system can effectively purify and sterilize the air in the compartment of an intensive care ambulance.The effects of air purification meet the requirements of related hygienic standards,which can satisfy the demands of treatment and intensive care for the victims in the ambulance.