Introduction of negative ion air purifier
Negative ion air purifier: It is an environmentally optimized electrical appliance that uses its own negative ions to purify, remove dust, deodorize, and sterilize the air. The difference from traditional air purifiers is that negative ions are used as an active factor. Capture harmful substances in the air. 
The traditional air purifier uses a fan to extract air, and uses a filter to filter dust to purify the air. This is called a passive adsorption filter purification principle. The filter needs to be replaced regularly, while the negative ion air purifier does not require consumables. The small particle size negative ions have good biological activity and are easy to penetrate the human blood-brain barrier and enter the human body to exert their biological effects.
Utilization factor
When we are dizzy in an air-conditioned room or ultra-clean laboratory, we come to the forest or the seaside to feel refreshed. This is the effect of the colorless and odorless negative oxygen ions that are invisible in nature.
Medical research shows that it is the small particle size negative ions that have medical and health effects on the human body. Because only small-sized negative ions can easily penetrate the human blood-brain barrier and exert their biological effects. Air anions in nature have created many longevity villages because of the high proportion of small-sized negative ions. Small-sized negative ions form a negative ion bath environment over longevity areas due to their high activity and long migration distance. The definition in the book "Environmental Health and Negative Oxygen Ions" by Professor Lin Jinming, a PhD supervisor of Tsinghua University and an expert of the Chinese Academy of Sciences, is as follows: Air positive and negative ions can be divided into large, medium and small ions according to their mobility. What is beneficial to the human body are small ions, also called light ions, which have good biological activity. Only small ions or small ion clusters can enter the organism. Air positive and negative ions can be divided into large, medium and small ions according to their mobility. An ion mobility greater than 0.4c㎡/(V`s) is a large ion, less than 0.04/(V`s) is a small ion, and a medium ion is between the two. Charged atomic groups or molecular groups that are close to the molecular size are all small air ions. These small air ions have a high speed of movement, collide with each other in the atmosphere, and continue to gather to form large or medium ions. Only small ions, or small ion clusters, can enter organisms. The small negative oxygen ions, or small negative oxygen ion clusters, have good biological activity. The moving speed of ions under the action of an electric field of unit strength (V/m) is called ion mobility, which is an important parameter to distinguish the diameter of the measured ion. The smaller the diameter of air ions, the faster their migration speed. Ion mobility is an important parameter to express the size of the measured ion. Ion movement speed is inversely proportional to ion diameter, and ion mobility is proportional to ion movement speed, so ion mobility is negatively proportional to ion diameter.
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