The factors that affect the air quality of the air shower and how often the air filter is replaced
The air shower is a necessary channel for goods to enter and exit the clean room and at the same time plays the role of a closed clean room in the air lock room. In order to reduce the large amount of dust particles caused by the in and out of the goods, the clean airflow filtered by the high efficiency filter is sprayed on the goods from all directions by the rotatable nozzle, which effectively and quickly removes the dust particles. The high efficiency filter recirculates to the air shower area after filtration.
In order to achieve the effect of blowing, the wind speed of the nozzle air outlet designed by the air shower machine can reach 25m/s or more, and the minimum wind speed blowing to the surface of the cargo is 18m/s. The air shower provides a modular assembly method, which can be assembled into various lengths of air shower sizes according to actual needs.
Several factors affecting the air quality of the air shower:
1. The operators in the clean room must strictly follow the operating rules of the clean room. The doors and windows of the clean room should be closed at all times. The transfer of people and objects between the clean room and the non-clean room should have a buffer zone, and there should be wind bath equipment to prevent the convection of the airflow. People who have nothing to do with production are not allowed. Enter the clean room.
2. The number of air changes in the clean room and the air supply volume of the air conditioning purification system are the main internal factors for maintaining the positive pressure and cleanliness of the clean room, but it is restricted by the final resistance of the filters at all levels in the purification system.
3. The equipment in the clean room is required to be cleaned and maintained regularly, regularly, and by personnel. Whether the materials and cleaning liquids used in the cleaning meet the regulations of clean room management.
4. For users, the cleanliness of the clean room is the focus of their most concern. The biggest pollution sources of the clean room in operation are people and items entering the clean room. The dust particles produced in the production also affect the cleanliness of the room. Another reason.
5. The reasonable diversion of the flow of people and logistics is of great significance to maintaining the cleanliness of the room. Whether people change clothes and blow before entering the clean room, and whether the dressing meets the standards of clean management regulations. Some personnel with special production processes and high cleanliness requirements must take a bath before entering the clean room; whether the objects are changed before entering the clean room The packaging is blown, whether the replaced material meets the clean room standard, etc.
