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How does the laminar supply ceiling work?
How does the laminar supply ceiling work?The working principle of the laminar supply ceiling is based on high-efficiency air filtration and unidirectional laminar flow airflow organization, which achieves a highly clean environment through the following core mechanisms:1. Multistage air filtration system Initial filter: Pre-filter large particles of dust in the air (such as hair, and fiber) to protect the subsequent high-efficiency filter. High-efficiency filtration: HEPA (High-efficiency air particles) filter is used to intercept ≥0.5μm dust particles and microorganisms, and the filtration efficiency can reach more than 99.99%. Disinfection system: Some devices are equipped with ultraviolet or chemical disinfection modules to further kill airborne microorganisms. 2. Laminar airflow organization Vertical laminar flow design: The purified air forms a uniform downward one-way airflow through the flow equalization device (such as a double-layer DPP flow equalization net), and the wind speed is usually controlled at 0.23~0.45m/s to ensure that the airflow line is parallel and there is no vortex. Positive pressure maintenance: the positive pressure inside the cover is maintained to prevent the entry of external polluted air, while the internal polluted air is discharged through the bottom or side return air outlet. 3. Function modules work together Fan power system: Provide stable air circulation power, some equipment supports step-less speed regulation to adapt to different needs. Noise reduction system: Reduce operating noise through sound insulation materials and structural design to ensure environmental comfort. Intelligent control system: real-time monitoring of temperature and humidity, wind speed and pressure difference, support remote control and fault alarm. 4. Central role High cleanliness guarantee: Through the directional laminar airflow "piston effect", the polluted air is quickly replaced, so that the working area reaches the 100-level clean standard (≥0.5μm particles per cubic foot ≤100). Temperature and humidity control: combined with the air conditioning system, maintain the temperature and humidity stability of the operation or production environment (such as temperature 22~25℃, humidity 40%~60%). Application scenario extension This principle is widely used in medical operating rooms, laminar flow wards, biopharmaceutical workshops, and other scenes with strict cleanliness requirements, reducing the risk of infection through local highly clean environments, and has the advantages of energy saving, flexibility, and modular expansion. |
