We need to understand what kind of equipment is a high-altitude oil fume purifier. High-altitude fume purifier is a kind of equipment installed in the kitchen of catering enterprises, its main role is to purify kitchen fumes and reduce fume emissions. However, the purification efficiency of such equipment is generally low, basically less than 50%, and the purification efficiency does not meet the national standard. GB 18483-2001 "Emission Standard for Cooking Fume" points out that the minimum purification efficiency of small equipment must be greater than 60%, and that of large equipment must be greater than 85%. Obviously, the high-altitude oil fume purifier is already outside the standard in terms of purification efficiency. The high-altitude oil fume purifier not only has a substandard purification efficiency, but also has a low maintenance cost in the later stage. For example, it is expensive to maintain and requires regular cleaning and replacement of parts. At the same time, because it cannot effectively purify all the oil smoke, it may cause secondary pollution. In first- and second-tier cities where environmental protection inspections are stricter, it cannot be installed, and the environmental protection department will be closed for rectification in minutes. Therefore, in the long run, the high-altitude oil fume purifier can no longer meet the needs of the market and will be eliminated by the market. 
Why is the purification efficiency of the high-altitude oil fume purifier so low?This is mainly determined by its structure and material. At present, most of the high-altitude oil fume purifiers on the market are made of galvanized sheets with relatively large spacing. The spacing of the electric field of the high-altitude oil fume purifier is large and the number is small, so the adsorption capacity is relatively poor. In addition, the structural design of this purifier is relatively simple, the wiring is not regular, and the power supply usually equipped with is also a low-voltage power supply, which cannot produce a high binding capacity, and there is a big gap compared with the low-altitude electric field. 
Due to the small number of electrodes in the electric field and the large spacing, the adsorption capacity of the electric field is weakened. As a result, the particulate matter in the oil smoke cannot be effectively adsorbed and removed, and the purification efficiency cannot reach a high level. In addition, due to the limitation of structural design and power supply, the performance of high-altitude oil fume purifier is also greatly affected. In contrast, the widest spacing in the industry should be the Weidun series of products, their width has been 320mm, 320mm electric field width is the most advantageous, and at the same time, the increase of the electric field width at the same time, the particulate matter in the oil smoke is more effectively adsorbed and removed. Therefore, the purification efficiency of low-altitude fume purifier is much higher than that of high-altitude fume purifier. 
The purification efficiency of the high-altitude oil fume purifier is low, the maintenance cost is high, and there are problems such as secondary pollution, which can no longer meet the needs of the market. Therefore, we can ** that in the future, high-altitude oil fume purifiers will be replaced by more efficient and environmentally friendly oil fume purification equipment.