German
French
Italian
Portuguese
Japanese
Korrean
Russian
What are the differences between an air shower pass box and an ordinary pass box
What are the differences between an air shower pass box and an ordinary pass boxThe main differences between air shower pass box and ordinary pass box are as follows:First, purification methods The wind passed the box The air shower pass box has a complete air shower system. It is equipped with a fan inside, and the high-speed air generated by the fan is filtered through the high-efficiency filter. The HEPA filter can remove small dust particles, microorganisms, and other pollutants in the air, and then the filtered clean air is blown through the nozzle at a certain Angle and speed to transfer the items inside the window. For example, in the electronic chip manufacturing workshop, when the tray containing the chip raw materials is transferred from the low cleanliness area to the high cleanliness area, the air shower system of the air shower pass box will purge the tray in a full range. The air is ejected at a speed of 20-30 meters per second, and the duration is usually about 15-30 seconds, effectively removing impurities such as dust attached to the surface of the item, and ensuring that the item entering the high clean area reaches a high cleanliness standard. Plain pass box Ordinary pass boxes rely mainly on ultraviolet sterilization for simple purification. Its interior is installed with an ultraviolet light tube, when the item is placed in the transfer window, the ultraviolet light emitted by the ultraviolet light tube can destroy the DNA structure of the microorganism, so as to achieve the purpose of sterilization and disinfection. However, the bactericidal effect of ultraviolet light has certain limitations. It can only play a role in microorganisms and has no cleaning ability for non-biological pollutants such as dust. For example, in ordinary drug packaging workshops, the ordinary transfer window can use ultraviolet light to kill some bacteria on the surface of the item. Still, it cannot remove impurities such as fibers and dust on the surface of the item. 2. Cleaning effect The wind passed the box. The cleaning effect of the air shower pass box is very significant. It can remove over 99.9% of dust particles larger than 0.3 microns. In some places with high cleanliness requirements, such as the production workshop of precision optical instruments, the air shower pass box can reduce the dust particles on the surface of the lens, optical components, and other items to a very low level to ensure the quality and performance of the product. Taking semiconductor manufacturing as an example, the manufacturing process of semiconductor chips requires that it be carried out in a dust-free environment, and even extremely small dust particles may cause faults such as short circuits of the chip. The efficient purification capacity of the air shower pass box can meet the requirements of this high cleanliness, which greatly improves the yield of chip production. Plain pass box The cleaning effect of ordinary pass boxes is relatively weak. It mainly focuses on sterilization and has limited control over contaminants such as dust. In places where the cleanliness requirement is not particularly high, such as the transfer of some conventional medical equipment between ordinary departments in hospitals, the ordinary pass box can meet the basic needs of preventing bacterial cross-infection, but can not effectively control dust. 3. Application Scenarios The wind passed the box. Air shower pass box is mainly used in industries with high requirements for cleanliness. In the electronics industry, such as chip manufacturing, electronic display production, and other fields, small dust particles may affect the performance and quality of electronic products, air shower pass boxes can ensure the cleanliness of materials in the production process when transferred between different clean areas. In the pharmaceutical industry sterile drug production workshops, such as the production of injections, air shower pass boxes, and essential equipment. It can ensure the sterility and cleanliness of medicine bottles, rubber stoppers, and other items transferred between the clean area and the unclean area, and prevent the contamination of drugs. In the aerospace field, the air shower pass box is also used in the manufacturing and assembly workshops of aircraft parts. Because aerospace equipment requires high precision and cleanliness, the air shower pass box can effectively prevent contaminants such as dust from entering the assembly area of precision parts. Plain pass box Ordinary pass boxes are suitable for places with relatively low cleanliness requirements. In the hospital between the general ward and the treatment room, some non-sterile medical equipment, such as stethoscopes, blood pressure monitors, etc., the ordinary pass box can play a role in preventing the spread of bacteria. In the food processing industry, in areas where sanitary conditions are not particularly high, such as between raw material warehouses and primary processing workshops, ordinary pass boxes can be used to transfer some packaging materials and other items to reduce the spread of bacteria through ultraviolet sterilization. |
