What is the difference between an air purifier and a fresh air system?

The problem of air quality cannot be resolved overnight. Economic development, employment of personnel, and improvement of the air environment are difficult to adjust quickly. Therefore, the problem of pollution control is still a long process.

This long process gave air purifier manufacturers the most fertile living soil. For a time, companies in other fields have transformed and many brands and products have appeared before us. In fact, in addition to the air purifier, there is a word that is gradually becoming popular. It is the "fresh air system."

Now that the debate on the new air system and air purifier on the Internet is endless, what is the difference between the two products? How can we use it to make indoor air more fresh and safe?

The basic principle of air purifier

Simply tell you what is an air purifier

Everyone must be familiar with the air purifier, and now there are most air purifiers in the market. There are two main reasons: the first price is relatively cheap, and the number of tens of thousands of yuan is the same. The function and efficiency of use are also different.

There are many different technologies and media in air purifiers that enable it to provide users with clean and safe air. The commonly used air purification technologies include: adsorption technology, negative (positive) ion technology, catalytic technology, photocatalyst technology, superstructure light mineralization technology, HEPA high-efficiency filtration technology, electrostatic dust collection technology, etc.; material technologies mainly include: photocatalyst, activated carbon, Synthetic fiber, HEAP high-efficiency material, negative ion generator, etc.

Many people are paralyzed when they see these technical terms, and they simply do not know what they mean. In fact, no matter what kind of technology the basic principle is the same, popularly speaking, it is an indoor filter, and more simply you can understand an electric fan front price filter cover. No matter what kind of technology is the operating principle and technology of the filter cover, there is no essential difference in the overall air filter.

Simply tell you what is the fresh air system

For many people, air purifiers are very common, but the new air system is not so common. In fact, hundreds of brands have been concerned about this area. In general, the commercial environment uses more fresh air systems. In some developed countries, the fresh air system has become as popular as air conditioners. However, it must be known that its working principle is much simpler than air conditioning.

In fact, there are many different types of fresh air systems like air purifiers, such as one-way flow systems, two-way flow systems, and ground air supply systems, depending on the flow of wind.

Do not worry, do not understand it does not matter, you can understand that the fresh air system is a reverse range hood, in fact, the technology did not go deep. By processing the outdoor clean air into the room, the indoor and outdoor air exchange is achieved.

The advantages of the fresh air system

What are the characteristics and advantages

From the air flow point of view, the fresh air system is a mode of internal and external circulation, and the air purifier is a mode of indoor self-circulation.

The advantage of the fresh air system is that it can ensure the indoor and outdoor air circulation. This is necessary for the health of the body. After all, people living in a relatively closed air environment are prone to breeding bacteria. The reduction of oxygen in the air is very detrimental to the health of the body.

The advantage of the air purifier is that it can be used in the internal environment. The operation and installation are very convenient. It can be used after the power is turned on. It does not need to be installed in advance. In addition, the internal circulation is already in the indoor air environment. The relative life of the filter is also relatively high, and the burden of purifying the air is not so heavy. It is relatively less affected by the outside air and pollution.

Since we want healthy air and body instead of purely purifying the air, we must look at the main pollutants in life.

Pollen and Dust: These pollutants have been blocked by a gap between the door and window before they enter the room. The air purifier itself can also play a role, but you know that they have invaded our room before being purified. Although the air purifier works, there is still some intrusion. The fresh air system is usually handled externally, which means that the air entering the room has basically not included pollen and dust. Of course, if the airtightness of doors and windows is not good, there will still be some impact, but it is not serious.

PM2.5 and other small pollutants: the so-called PM2.5 refers to the amount of particles less than or equal to 2.5 microns in diameter. It can be suspended in the air for a long time, but because of its small size, large area, strong activity, and easy to attach toxic and harmful substances, it has not been considered as a major pollutant before, but it is precisely because of this that his hazards are even greater. Most of the air purifiers and fresh air systems now have filter screens. Since the air purifiers use less room air during the air purifier, the content of pollutants during filter gas exchange is gradually reduced. The fresh air system introduces air directly from the outside, so it needs to be filtered all the time, so the service life of the filter will be reduced. And there is one point to note is that PM2.5 pollution can not be reused by cleaning the filter, to the service life (use dirty) must be replaced.

Indoor pollutants such as formaldehyde, TVOC, etc.: Formaldehyde is a contaminant that must evaporate out of furniture articles. It is colorless and odorless. Therefore, everybody needs special attention. It is not furniture that has a pungent odor or excessive formaldehyde. The relationship between the two is not direct, and The materials and materials used in modern production contain a lot of formaldehyde. The volatilization process is very slow and can be removed in a few years or even decades. Therefore, formaldehyde has become one of the most concerned pollutants. Although there are many air purifiers that can remove formaldehyde, they are nothing more than adsorbed by activated carbon. This is a cup of water. There are professional teams who have done experiments. The amount of activated carbon needed to adsorb indoor formaldehyde is enormous, and it cannot be said. The filter was completely useless, and the effect of adsorption was negligible. The only solution was to open the window and allow him to slowly evaporate. Here the fresh air system is very advantageous. Because it is the exchange of indoor and outdoor air, the method of removing harmful gases such as formaldehyde is to use the air purified by nature to "pick up" the polluted gas.