When people and materials enter the clean room, they may bring in external pollutants, especially people themselves are an important source of pollution. The amount of dust generated by the human body varies when wearing different clothes and performing different actions. The amount of dust particles >0.5um generated by ordinary people when walking is considerable. According to research data, the dust in the clean room mainly comes from air infiltration, raw materials and equipment operation, of which 35% is caused by human factors. Analysis of clean room air quality shows that the main pollutants include human skin debris, clothing fibers and particles similar to those in the outside atmosphere. This shows that in order to achieve the air purity required for the production environment, it is essential to purify the people and materials entering.
Under certain wind speed and blowing time conditions, the air shower room has a significant effect on removing dust from the human body. Comparative experiments show that after using a blow shower chamber, dust particles ≥0.5um can be reduced by approximately 10%~30%, while dust particles >5um can be reduced by approximately 15%~35%. In addition, the blow shower room also acts as an airlock, preventing outside unpurified air from entering the clean room and helping to maintain its internal positive pressure state.
In addition to the physical cleaning function, the blow shower room, as a transition point from the non-clean area to the clean area, also serves as a psychological hint to remind the staff that they are about to enter a special environment, helping to regulate their behavior in the clean room.
According to statistics, about 80% of the existing clean factories in China are equipped with air blowing facilities, showing that this device has been widely used in the country.
Post time: Nov-08-2024