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How do you control clean air in a cleanroom?
How do you control clean air in a cleanroom?Clean rooms generally use closed structure, will be a certain space within the scope of microparticles, bacteria, and other pollutants excluded, and will be the indoor temperature, cleanliness, indoor pressure, air velocity, air distribution, noise and vibration, lighting, static electricity control within a certain range of demand. Control of clean air in the clean room on the one hand, the need to continuously transmit clean air to the clean room, on the other hand, to accelerate the discharge of high concentrations of contaminated air, clean room to maintain a certain positive pressure is to ensure that no or little contamination to maintain the cleanliness level of one of the indispensable conditions.To ensure the cleanliness of the air required in the clean room, you can take a variety of comprehensive measures to achieve, briefly summarised below: I. Source control, control the source of pollution to reduce the amount of pollution As far as possible, choose the technology and equipment for small pollution, or take the necessary isolation and negative pressure measures, personnel should enter dust-free clothes, wear dust-free hats, etc., and after the wind shower blowing shower, reduce the pollutants carried by the personnel, goods in and out of the goods should also be in the shower room blowing shower before entering the clean room. II. Effective filtration to prevent outdoor pollution in the room The cleanliness needs to be equipped with the appropriate number of FFU fan filters to ensure that the number of air changes meets the standard, the higher the cleanliness level, the more ventilation. For indoor positive pressure control, industrial clean rooms and general biological clean rooms are using positive pressure measures. III. Reasonable layout, effectively eliminates indoor pollution particles According to the size of the clean room area, build orientation, design the location, size, and form of the air supply and return vents, so that the indoor airflow is in a certain direction to prevent dead ends and secondary pollution. At the end of the daily operation, the operator should do a good job of cleaning the worktable, floor, and stool. |
