Classification of clean premises

Depending on the air flow mode, there are basically three types of clean rooms with air flow distribution:
(1) a clean room with a mixed flow: it is often called a clean room with a turbulent flow. Not all the air in the room flows in the same direction. Clean rooms with mixed air flow have several characteristics in common: the end filter (high or low) is located as close to the clean room as possible. It can be an air outlet, or it can be connected directly to an air outlet, or it can be connected directly to it. It is possible to connect to the static chamber of air supply in the room. The return air exits are located at the bottom of the clean room to avoid the phenomenon of dust flying. Whirlpool currents occur in clean rooms with mixed flow, so they are not suitable for use in clean rooms of high purity and are suitable for use in clean rooms of classes 6-9.
(2) clean room with one-way flow: the flow of air in a clean room with one-way flow is characterized by parallel current lines running in one direction and constant wind speed in the cross section. There are vertical, one-way clean Spaces. Rooms, quasi-vertical one-way flow and horizontal one-way flow for a clean room flow, etc.
(3) vector room: air is supplied to the top corner of the room by means of a fan filter. You can also use the usual high-performance fan filter to supply air and install it. Lift the air outlet to the bottom of the other side. The ratio of height to length of the room is average. The appropriate value is 0.5 to 1. Such clean Spaces may also achieve a purity level of 5 (level 100).