The air filter is the core equipment of the air -conditioning purification system. The filter forms resistance to the air. As the filter accumulates the dust, the filter resistance will increase with. When the filter has too many dust accumulation and the resistance is too high, the filter will be reduced through the air volume, or the filter is penetrated. Therefore, when the resistance of the filter increases to a certain specified value, the filter will be scrapped. Therefore, the use of filters must master the appropriate use cycle. When the filter is not damaged, the service life is generally determined by resistance.
The diffusion effect of small -particle size dust (Brown movement) is obvious, the wind speed is low, and the airflow has a long time to stay in the filter material, and there will be more opportunities to impact obstacles in the dust, so the filtration efficiency is high. Experience shows that for high -efficiency filters, the wind speed is reduced by half, the passing rate of dust will be reduced by nearly one magnitude (an increase in efficiency value by one 9), the wind speed increases double, and the pass rate will be increased by one magnitude (the efficiency is reduced by one 9).
1. The basic knowledge of the filter is the main purification device of the clean room, which is the main means of air purification. Therefore, it is very important for the basic knowledge of clean room design, construction, and maintenance management to understand and master the filter. A. The classification of the filter is divided according to the performance of the filter (efficiency, resistance, dust removal), usually divides it into a coarse, alive, high-efficient, sub-efficient, efficient (HEPA) and ultra efficient (ULPA) Six types of filters.
The medium efficiency filter is composed of many components. When cleaning each different part, the corresponding method is different. Let's take a closer look at how we should clean the different parts of the medium efficiency filter!
The application of medium efficiency filters is very common. Commonly used are household air conditioners and automobiles. The working principle and manufacturing process of the medium efficiency filter are basically similar, but the filtering effect is better and the test range is wider. Different from the primary filtration, the production process of the medium-efficiency filter is more strict, the production process is more accurate, the raw materials used are more environmentally friendly, and the quality is higher. The medium-efficiency filter can effectively capture dust particles less than 5um in the air. The medium-efficiency filter is made by hot melt technology. Advanced technology can make the filter more durable and reduce the chance of leakage. After the annoying cleaning, continue to use and save money. The installation method of the medium efficiency filter is the same as that of the main filter. It is easy to install, requires no additional equipment, and saves space. The medium-efficiency filter also has a larger air volume, even if there are many people in the workshop, it will not feel frustrated. It is worth noting that no matter what kind of filter, it should be replaced and cleaned regularly to ensure the effect and cleanliness of indoor air.