紫外线空气消毒器除菌效果的研究

STUDY ON EFFICACY OF ULTRAVIOLET AIR KISINFECTORIN DILLING AND REMOVING BACTERIA

研制的含高强度低臭氧紫外线灯、负离子发生器与滤器的空气消毒器，具有良好的杀菌作用。在人员不断进出的门诊室试验表明，常温常湿下作用６０分钟，可消除空气中自然菌９２％。还进行了消除人工细菌气溶胶效果与影响因素的试验观察。

Since the ultraviolet air disinfector developed in this laboratory contains high-intensityand low ozone production ultraviolet lamp, negativc ion generator and filter,it has bothgermicidal and dust-removal actions. In the artificial bacterial aerosol test conducted in a non-occupied aerosol chamber attemperature of 20～22 ℃ and relative humidity of 60～65 %,more than 99.9% ofStaphylococcus aureus and spores of Bacillus subtilis var.niger in air were killed and removed after exposure for 1 5 min and 30 min respectively and 100% were killed and removed after exposure for 30 min and 60 min respectively.In the test conducted in OPD where people came in and out uninterruptedly,it was indicated that the natural bacteria in air could be reduced by 92% after exposure for 60 min at ordinary temperature and humidity.The results of tests for influencing factors showed that decrease in room temperature,increase in air relative hu-midity to as high as 90% and presence of organic substances could reduce the rate of killing and removing air bacteria by the ultraviolet air disinfector.