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Classification and Principle of Cleanroom
Classification and Principle of CleanroomClean room according to its indoor air flow can be divided into unidirectional flow clean room and turbulent flow clean room.I. Turbulent flow cleanroom Simply put, the working principle of the turbulent flow clean room is a "dilution", that is, when the clean air from the air supply into the room, the rapid diffusion of the surrounding area, mixing, and at the same time the number of comparable airflow from the return air discharge, the use of clean airflow dilution of indoor pollution of the air, the original high concentration of dust indoor air diluted so that the dust content decreased to achieve a balanced state. to achieve a state of equilibrium. It is characterized by the use of clean airflow indoor air mixing and dilution, the indoor dust concentration of air dilution, so that the indoor pollution source of pollutants produced by the uniform diffusion of pollutants and timely discharged outdoors, reduce the concentration of dust indoors, so that indoor cleanliness to meet the requirements, and the airflow is not a single direction of flow indoors, indoor reflux, vortex generation. II. Unidirectional flow clean room Unidirectional flow clean room principle of work that is "piston", that is, the airflow with a uniform cross-section speed along the parallel flow line in a single direction in the whole room cross-section through, which is characterized by the air supply piston-like squeezing effect of indoor pollutants quickly excluded and therefore has the following characteristics. In the clean room, from the air supply outlet to the return airflow through the cross-section of the way no change. The whole room cross-section of the flow rate is relatively uniform, parallel flow in the work area does not produce eddy currents. Clean air is like an air piston, along the room this "cylinder", a downward push, the original high dust concentration of air out of the room, dirty air along the entire cross-section discharged to the outside. Unidirectional flow clean room process equipment can be arbitrarily arranged, and can simplify the personal purification facilities, but the ceiling structure is more complex, and the cost and operating costs are higher. |
