Air shower mainly consists of several major components such as a fan, high-efficiency filter, control circuit, and housing. It is an essential purification device at the entrance of a cleanroom. Its main function is to remove dust from the person's body through airflow, achieving purification. In addition, one of the most important functions of an air shower is to effectively isolate the cleanroom from the outside environment.
The main difference between an air shower and a buffer room or airlock is that an air shower has a purification and filtration airflow function.
Buffer Room: The structure of a buffer room is roughly the same as an air shower, except that it lacks an airflow function. Its main function is to have an electronic interlock. The buffer room is the necessary passage for personnel or materials to enter the clean area from the non-clean area, and its air pressure gradually increases from the non-clean area to the clean area. The buffer room serves two purposes: one is to prevent airflow from the non-clean area from directly entering the clean area. The second function is to allow personnel or materials to self-clean in a buffer room when entering a clean area from a non-clean area, preventing contamination of the clean area upon entry.
The function of an airlock is to maintain air cleanliness and positive pressure control within the cleanroom. Airlocks are typically located between two different cleanliness level areas, or between clean area and non-clean area. To prevent cross-contamination between different environments, the airlock maintains negative pressure for the air in the connected functional areas and exhausts all air. An airlock has two doors that cannot be opened simultaneously, its purpose being to isolate the air from two different clean environments and prevent contaminated air from entering the clean area. Airlocks can be supplied with air or not.
Differences between Airlocks and Buffer Rooms
Similarities:Both airlocks and buffer rooms are used to separate two areas, preventing direct communication between them; both have supply and exhaust ventilation (full exhaust), both doors should be interlocked and cannot be opened simultaneously, and both have self-cleaning functions.
Differences:Airlocks typically separate two different clean areas, maintaining negative pressure in both areas. Their primary function is to prevent cross-contamination between the two clean areas; their function is bidirectional. Buffer rooms are located between non-clean and clean areas, maintaining positive pressure in the non-clean area and negative pressure in the clean area. Their primary function is to prevent contamination of the clean area from the non-clean area; their function is unidirectional.
Suzhou Pharma Machinery Co.,Ltd.
2026/01/12
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