Form classification of purification workshop1

As a classification method for purification workshops, it is generally divided according to the shape of indoor airflow. According to this method, the purification workshop can be roughly divided into the following three categories. 1. Vertical laminar flow type (downflow mode) This is a way of installing the HEPA or ULPA filter on the ceiling, facing the ground directly from top to bottom, and providing clean air to the purification pharmaceutical cleanroom at the same speed. This kind of equipment is bulky and expensive, but its performance as a purification workshop is good in every aspect. 2. Horizontal laminar flow type (cross flow type) This is a way of installing HEPA or ULPA filter on the wall panel to supply clean air to the opposite wall at the same speed. Due to the horizontal laminar flow, the cleanliness of the downstream side is lower compared to the upstream side of the airflow. But compared with vertical laminar flow, it has the characteristics of small equipment and low cost. 3. Non-laminar flow type (conventional type) Compared with the above laminar flow type, its pharma machinery cost is much lower, but due to the non-laminar flow part, the indoor airflow is turbulent, and the particles float in the air, making it difficult to ensure high cleanliness. Most of M3.5 (100) and M4.5 (1000) can achieve laminar flow type when the cleanliness requirements reach M3.5 and M4.5. Previous: What is the reason for the unqualified cleanliness of the purification workshop? Next: Explanation on the management of the construction project of the purification workshop

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