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FAQs about high-efficiency air filters for clean rooms
FAQs about high-efficiency air filters for clean rooms1. What are the actual and nominal dimensions of high-efficiency filters with and without partitions?A: Why are there actual and nominal dimensions for high-efficiency filters with and without partitions? This is because the nominal dimension includes the outer frame and filter material. In contrast, the actual dimension generally excludes the outer frame and only calculates the width, height, depth, and area of the filter material. 2. What are the similarities and differences between high-efficiency filters with and without partitions? A: High-efficiency filters can be divided into high-efficiency filters with and without partitions. High-efficiency filters with partitions are made of ultra-fine glass fiber as filter material, offset paper, and aluminum platinum as partitions. They are glued with wooden frames or aluminum alloy frames. They have the advantages of high filtration efficiency, low resistance, and large air volume and are widely used in various local purification equipment and clean workshops. The high-efficiency filter without partition uses ultra-fine glass fiber as a filter material and hot melt adhesive as a partition. It is assembled with various frames, including a beautiful outer frame. Compared with the high-efficiency filter with partition, it has the advantages of small size, lightweight, compact structure, and reliable performance under the same air volume. 3. What are the standard folds, fold heights, and formula conversions of the filter materials of high-efficiency filters with partitions and without partitions? Answer: The fold height of filter paper with partitions is generally about 30mm~34mm shorter than the height of the nominal size. Its folds are mainly determined by the tightness of the assembly of partition paper filter paper and partition paper. The arc of the partition paper is calculated according to the standard, which is generally 4mm. If it is less than 4 mm, the partition with partitions will have more partitions. In addition, the assembly is loose, and the result is counterproductive. The partition with partitions has fewer partitions, and the folds of filter paper without partitions are mainly determined by the fold height of the filter paper and the tightness of the filter paper. 4. What are the similarities and differences between "PP HEPA" and glass fiber "HEPA"? Answer: The comparison table between "PP HEPA" and glass fiber "HEPA" is as follows: Item PPHEPA Glass fiber HEPA Skin irritation No Yes Fiber shedding No Yes And the shedding fibers are seriously harmful to the human body. Filtering effect Good Good Wind resistance Small (about times that of PPHEPA) 5. What are primary, medium, high, sub-high, and high-efficiency filters? Answer: The primary filter is suitable for pre-filtration of air-conditioning systems, mainly used to filter dust particles above 5um. There are three styles of primary filters (folding, plate, and bag). The outer frame materials include paper frame, aluminum frame, and galvanized frame, and the filter materials include non-woven fabrics, nylon mesh, activated carbon filter materials, and metal mesh. Medium efficiency filters are widely used in intermediate filtration of air-conditioning systems, mainly used to filter dust particles of 1um~5um, with the advantages of small resistance and large air volume. Medium efficiency filters are bag-type, frame-type, and combined-type. |
