Air Purifier Opens The Era Of Ultra-micro Purification

With the popularity of smog and the improvement of people's environmental awareness, air purifiers have become a very familiar electrical product. Filter purifiers, negative ion purifiers, the endless stream of purification equipment is dazzling. But in fact, different air purifiers represent different eras of purification technology.

Go up! The evolution of negative ion air purifier

First used for fire fighting purposes

In 1823, two people named John and Charles Dean invented a new type of smoke protection device in order to keep firefighters away from the attack of smoke when fighting fires, which greatly protected the personal safety of firefighters.

In 1854, Johns Tenhouse showed the world a foreign version of "the waves behind the Yangtze River pushes the waves forward"-an improvement on the invention of his predecessors. Through experiments, he learned that adding charcoal to the air filter can filter out harmful and toxic gases from the air, which also adds new functions to the air purifier.

Slowly, the air purifier gradually matured, and it can be said that it has experienced three generations of purification technology.

1.0 Purification technology-fiber filter type

Filtration technology is the earliest generation of air purification technology, and is generally suitable for simple foreign air. But in China, this kind of purification technology is still the most common in the family.

The principle of filter technology is to use a fan to draw air into the machine, and filter pollutants in the air through a built-in filter. The advantage is that the price is cheap, and the installation can be bought and used. With its solid market foundation, filter air purifiers quickly became popular under the impetus of smog, and the limelight was no different.

It is undeniable that the filter air purifier does have a certain role in purifying the air, especially for large-particle pollutants. But at the same time, due to the size of the filter pore size, although it can effectively filter large particles such as PM10, it is difficult to filter the lung particles below 2.5 microns, so even the most advanced HEPA filter manufacturers have publicly claimed. And when the filter is easily saturated, if it is not replaced in time, it is easy to cause secondary pollution of indoor air. Moreover, the later maintenance costs are relatively large, causing more troubles.

According to the big data on air purifiers published by Allwinnet.com, the current sales of filter air purifier products have shown a downward trend, and the mainstream products use 11-H13 household-grade filters, using medical health-care filters above H14 The products are rare.

2.0 purification technology-electrostatic dust removal

The second generation of air purification technology is mainly electrostatic dust removal technology.

Electrostatic dust removal technology is mainly to make the particles in the air positively charged after the air passes through the high-voltage ionization zone, and the pollutants are adsorbed on the dust collecting plate through the principle of positive and negative phase absorption. The dust removal efficiency is high and it can purify larger air volume. , The particle size range that can be removed is wide. However, this technology still does more harm than good, because static electricity is easy to attract dust and cause secondary pollution. Moreover, the use of electrostatic dust removal technology can easily produce ozone, positive ions and other derived pollution, which is very harmful to human health.

Since this electrostatic precipitating air purification method is realized by high-voltage discharge, the device needs to be placed in a place out of reach of people, so it is generally used in a fresh air system.

3.0 purification technology-negative ion type

When the shortcomings of 1.0 filtration technology and 2.0 electrostatic dust removal technology cannot be solved, and various studies have praised the role of negative ions in air purification, 3.0 negative ion purification technology came into being.

Negative ions refer to one or more negatively charged ions that combine with the positively charged pollutants in the air to condense into clusters and settle on the ground, and the large clusters of pollutants that have settled will no longer follow The air floated. At the same time, the World Health Organization has also set the amount of negative ions in the air as an important standard for clean air. It can be seen that negative ions play a very important role in air purification.

However, negative ion technology also has traditional and ecological distinctions. Traditional negative ion technology generally refers to bipolar corona discharge technology and ordinary single-machine discharge technology. The former is to load positive and negative high voltages on the two electrodes, forming an uneven electric field between the two electrodes, and generate negative ions through corona discharge; the latter is to use off-season negative high voltage as the electron release source, using needle-shaped metal tips or ordinary The carbon fiber tip generates negative ions for the release end.

However, the biggest drawback of traditional anion technology is that it generates only large-particle anions with low activity and average concentration, which has a certain air purification effect, but does not have the healing and health care effect. And it will definitely be accompanied by the production of derived pollutants such as ozone and nitrogen oxides.

The ecological anion technology is an ecological anion generation chip technology and nanofullerene anion release technology that has been reported by authoritative media such as Xinhua News Agency, CCTV, Guangming Daily and other authoritative media. This technology is known as "opening the ecology of artificial anion technology. "Chemical Era", breaking through the bottleneck of traditional negative ion technology, can generate the strongest purification power of small particle size negative ions. It has no filter screen and no fan. It mainly works in a way of natural diffusion of negative ions and active attack to purify indoor air in all directions.

Among them, the ecological anion generation chip is a highly integrated piezoelectric ceramic anion generator and an ion converter, which not only realizes the generation of ecological-grade negative ions, but also greatly reduces the volume of negative ion products. It is currently the world's most advanced ecological Negative ion generation technology.

Nano-fullerene anion release technology adopts the electrocatalyst material fullerene manufactured by nanotechnology. It was originally controlled by the military and used in the military field. The resistance is almost zero, which is very conducive to the free precipitation of electric ions. The current can release a large amount of high-purity negative oxygen ions without the production of ozone, positive ions and other derivatives. It is currently the most effective technology to solve the problem of derived pollutants generated by the negative ion generation system.