Clean room airflow organization consideration principle

(1) When the product requires cleanliness of 100 levels, laminar flow type; when the product requires cleanliness of 1,000 to 100,000 levels, turbulent flow type.

(2) Reduce the eddy current, avoid the pollutants outside the work area into the work area.

(3) In order to prevent the dust flying twice, the airflow speed can be too large. Turbulent flow clean room return air outlet should be located in the upper part of the work area. Suitable for the floor the lower part of the side wall uniformly arranged back to the air outlet.

(4) the work area of the airflow should be uniform, the flow rate must meet the process health requirements; clean air should be as much as possible to the work part of the enclosure, so that the pollutants in the diffusion of the return air flow to the mouth.

(5) The work equipment should be arranged to leave a certain interval, for the send, return the arrangement of the air outlet airflow to create conditions: airflow organization design should consider the impact of tall equipment on the organization of airflow.

(6) The clean bench should be arranged in the laminar flow clean room. When arranged in the turbulent flow clean room, it is appropriate to place it in the working area of the air flow upwind side, in order to improve the indoor air cleanliness.

(7) When there is a fume cupboard in the clean room, it is appropriate to place it on the downwind side of the airflow in the working area to reduce the pollution in the room.