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Is it necessary to turn on the fan when using the super clean bench in the laboratory

日期:2024-05-20 23:24
浏览次数:217
摘要:The birth of the ultra-clean workbench effectively meets the requirements of modern industry, photoelectric industry, biological system and scientific research and test fields on the cleanliness of the local working area. Ultra-clean workbench is generally composed of box, fan, filter, operating switch and other parts. Then, is it necessary to turn on the fan when using the ultra-clean workbench? The principle of the ultra-clean table is that, in a certain space, indoor air is initially filte.
The birth of the ultra-clean workbench effectively meets the requirements of modern industry, photoelectric industry, biological system and scientific research and test fields on the cleanliness of the local working area. Ultra-clean workbench is generally composed of box, fan, filter, operating switch and other parts. Then, is it necessary to turn on the fan when using the ultra-clean workbench?
The principle of the ultra-clean table is that, in a certain space, indoor air is initially filtered through the pre-filter, then pressed into the static pressure box by a small centrifugal fan, and then the secondary filtration is completed through the air high efficiency filter. At this time, the clean air blown from the air outlet surface of the air high efficiency filter has a uniform section of wind speed, which can remove the original air in the working area. Dust particles and biological particles are removed, resulting in a highly clean and sterile working environment. The air is filtered by a filter to achieve a sterile state and is transported to the operating space to create a relatively positive pressure in the operating space. If the fan is not turned on, there will be no sterile air delivery, and the operating space will not be sterile.

Ventilation is required during the use of the ultra-clean workbench. With the rotation of the fan, the air enters through the efficient filtration membrane (none), keeping the operating table in a sterile state. The function of the super clean workbench is to provide a relatively sterile environment. There are two kinds of design and practical principles. One is the top or side sterile air filter device, which has several layers of sterile air filter inside. The sterile air blown out by the sterile air filter ensures that the interior of the ultra-clean workbench is relatively sterile during operation.
However, UV irradiation is mainly used to prepare for the beginning of the operation, or to sterilize the surface of the equipment and instruments to be used. The sterilizing effect of UV irradiation is basically negligible. Usually, the fan and UV lamp are not turned on at the same time during the experiment. Just turn on the ultraviolet light for a period of time, turn off the ultraviolet light, turn on the fan and blow for about half an hour, and then start the experiment. During the test, the fan should be kept open at all times.

The purpose of turning on the fan is to create a positive pressure in the console to prevent air from the surrounding space from entering the console with the airflow. The fan must be turned on because the air may contain substances which may affect the test results. The air from the fan is used to purify the air, and the air flow after purification can prevent personnel from polluting the operation object.

The wind of the super clean table is blown outward, and the main function is to prevent the entry of air. There is no need to turn on the fan if the glass of the ultra clean table is already closed.