万级洁净车间标准(万级洁净车间标准换气次数)

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万级洁净车间标准

【Filtration efficiency】

过滤效率

The clean room is generally divided into 5-100 dust proof boards. According to the requirements of cleanliness, the filter requirements and air velocity of the air entering and exiting the room are set. The filter type of air filter is generally divided into two categories: high efficiency filter and ultra-high efficiency filter. The high-efficiency filter is composed of outside glass fiber as pre-filter layer and filter media of synthetic fiber. The high efficiency filter can remove more than 95% of all particles with a particle size of more than 0.3 microns. The ultra-high efficiency filter is composed of outside glass fiber, pre-filter layer and filter media of synthetic fiber + multi-layer electrostatic filter, and can remove more than 99.99% of particles with a particle size of 0.3 microns or more.

洁净车间一般分为5-100防尘板，根据洁净度要求，设定进出层的空气的过滤要求及空气流速。空气过滤器的过滤类型一般分两类：高效过滤器和超高效过滤器。高效过滤器由外层玻璃纤维为预过滤层和合成纤维过滤介质构成。高效过滤器可以去除微粒尺寸大于0.3微米的所有颗粒物质的95%以上。超高效过滤器由外层玻璃纤维、预过滤层以及合成纤维过滤介质＋多层静电过滤器构成，可去除微粒尺寸为0.3微米及以上的99.99%以上的颗粒物质。