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目的:为了解采用不同消毒因子的风机盘管空气净化装置对空气中自然菌的消除效果,分别对安装了单一的二氧化钛网、二氧化钛网加紫外线灯和二氧化钛网加紫外线灯加高压静电的风机盘管空气净化装置进行现场实验。将通风管道内一次性通过的空气中自然菌平均消除率进行对比分析,比较三种设备对空气中的自然菌消除效果。方法:按《公共场所集中空调通风系统卫生规范》(卫生部2005)进行现场试验。结果:1、安装了二氧化钛网的风机盘管空气净化装置对空气中自然菌的消除率为30.4%。2、安装了二氧化钛网加紫外线灯的风机盘管空气净化装置对空气中自然菌的消除率为50.02%。3、安装了二氧化钛网加紫外线灯加高压静电的风机盘管空气净化装置对空气中自然菌的消除率为95.08%。结论:安装了二氧化钛网的风机盘管空气净化装置对空气中自然菌具有一定的消除效果。加装紫外线灯后,消除效果有所增强。在风机盘管中安装二氧化钛网、紫外线灯和高压静电的空气净化装置结构更为复杂,对空气中自然菌消除效果最佳,能够达到消毒水平。
OBJECTIVE: To understand the elimination effect of air-purifying devices with different disinfection factors on natural bacteria in the air, aiming at eliminating the effects of natural bacteria in the air by using a single titanium dioxide mesh, titanium dioxide mesh and ultraviolet light and titanium dioxide mesh plus UV lamp Tube air purification device for field experiments. The one-time pass through the ventilation pipe natural air bacteria in the average elimination rate of comparative analysis of the three devices to compare the natural bacteria in the air to eliminate the effect. Methods: According to “public places centralized air conditioning and ventilation system health norms” (Ministry of Health 2005) for field trials. Results: 1, the installation of the titanium dioxide fan coil air purification device on the air natural bacteria elimination rate of 30.4%. 2, the installation of the titanium dioxide mesh plus UV lamp fan coil air purification device on the air of natural bacteria elimination rate of 50.02%. 3, the installation of a titanium dioxide mesh plus UV lamp plus high pressure electrostatic fan coil air purification device on the natural bacteria in the air to eliminate the rate of 95.08%. CONCLUSION: The fan coil air purification device with titanium dioxide mesh installed has a certain effect of eliminating natural airborne bacteria. With the installation of UV light, the elimination effect has been enhanced. In the fan coil installed titanium dioxide mesh, UV lamps and high-pressure electrostatic air purification device structure is more complex, the elimination of natural air in the best bacteria to achieve the level of disinfection.