Design of one-way flow airflow in clean room workshop
Design of one-way flow airflow in clean room workshop
The one-way flow of the clean room is that the airflow passes through the entire cross-section in a single direction along the parallel lines at a uniform cross-sectional speed. Discharge indoor pollutants; vertical one-way flow clean room is full than...
Text label: One-way flow design of clean room, one-way flow air organization of clean workshop
One-way flow airflow organization design of clean room pharmaceutical cleanroom
The one-way flow of the clean room is that the airflow passes through the entire cross-section in a single direction along the parallel lines at a uniform cross-sectional speed. Discharge indoor pollutants; the full coverage ratio of the vertical one-way flow clean room should not be less than 60%, and the horizontal one-way flow should not be less than 40% to meet the requirements of full coverage, otherwise it will be a local one-way flow; for full coverage The normal situation of the high-efficiency filter, that is, only deducting the natural frame of the filter and the installation frame, the full coverage ratio of the high-efficiency filter should not be less than 80%. The design focus of the unidirectional flow airflow organization should be considered. The full distribution ratio of the air supply high-efficiency filter and the form of the return air outlet are easy to satisfy. .
Full of high-efficiency filters for air supply, the vertical one-way flow form of the whole ground grille return air is a typical vertical one-way flow. The indicators such as parallelism and turbulence have a good degree of satisfaction; this one-way flow clean room can be applied to any production process, even if the production process is constantly changing, it can be well satisfied. The structure of the wind floor is complex. If the liquid tank sealing structure is used, the cost is high, but the sealing reliability is high. If the gasket extrusion sealing structure is used, the cost is low but the sealing performance is high. The technical requirements for filter installation are very high. Remove the filter and reinstall it, which is more difficult to install and requires a large amount of work; high-efficiency filters are placed on the side and air is supplied from the ceiling damping layer. This system reduces the difficulty of installation and saves the initial investment by changing the result of ceiling air supply. The filters are installed on both sides of the suspended ceiling interlayer static pressure box, which reduces the difficulty of installation and facilitates replacement. The damping layer is used for the ceiling to make the air flow evenly and parallelly downward. This damping layer can be made of stainless steel orifice plates. The porosity should be greater than 60%. If a damping orifice and a deflector can be installed in the static pressure box, the current equalization effect will be better. Zhongjing Global Purification can provide consulting, planning, design, construction, installation, transformation and other supporting services for clean rooms and clean workshops.
Horizontal one-way flow airflow organization, the side walls are covered with high-efficiency filters for horizontal air supply, and the opposite walls are covered with primary-efficiency filters or orifice plate return air, along the airflow direction, the cleanliness gradually decreases, and the cleanliness requirements The high-level process is arranged near the air supply outlet, and the low-level process is arranged in the direction of the airflow; the building floor height required by the horizontal one-way flow is lower than that required by the vertical one-way flow, the construction technical difficulty is lower, and the cost is lower than that of the vertical one-way flow. The clean room is low; in engineering applications, according to the process characteristics, it can be flexibly applied, the return air outlet is located on the side wall, the airflow streamline is bent, and the eddy current area appears at the corner, which can be used in the case of small room size. Horizontal one-way flow without return air wall, after the high-efficiency filter air supply wall sends out clean air, the horizontal air flow flows to the environment where it is located, and is then inhaled by the fan after being filtered, similar to the air circulation of the horizontal flow clean workbench. To prevent the intrusion of pollutants, this clean room is cheap and can be made into a mobile type, which is suitable for the process of assembly in a clean environment in the workshop; the temperature and humidity of the clean environment and the surrounding environment are the same, and most of these systems use two-stage filtration. The filter usage time will be shortened.
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