RCCN WeChat QrCode
Mobile WebSiteHowever, because the fresh air system is a new type of household product, many people don't know much about it. They think that the fresh air system is just a gimmick, and its function is equivalent to an exhaust fan or an ordinary air purifier, and it is not necessary to install it.
What exactly is the fresh air system? Is it necessary to install it? How to buy it? Today, I will talk about these topics in detail.
What is the fresh air system?
The earliest prototype of the fresh air system was actually a ventilating fan. It was invented to pump out the dirty air in the room when the doors and windows were closed to help ventilate the room. Later, it was upgraded and pipes were added, in addition to removing the dirty air in the room. In addition to pumping out, it can also send the outside air into the room; later, a variety of purifying and filtering functions are added to filter and purify the air pollutants in the air sent from the outside, so that the air becomes fresher. This is also fresh air. The main function of the system.
Fresh air systems are classified according to their types. There are four main types: central fresh air, wall-mounted fresh air, and cabinet type fresh air. According to the installation method, it can be divided into ceiling type, wall-mounted type and cabinet type.
Ceiling type fresh air system is the most common, also called "whole house fresh air" or "central fresh air". It needs to be installed in the ceiling and is expensive. There is only one host. The air in each room is pumped out through ducts, and then the outdoor air is filtered. After purification, they are sent to various rooms.
The wall-mounted fresh air system is incomparable with the whole house fresh air, but the wall-mounted fresh air does not require pipes or ceilings. It is cheaper and easy to install. It only needs to open a vent to the outside to complete the indoor part. Take a breath.
The cabinet type fresh air system is similar to the vertical air conditioner. It only has air supply ducts for the whole house, no return air ducts, and also requires a ceiling. The circulation effect of the whole house is relatively poor. The only advantage is that it is easier to maintain in the future. Generally speaking, cabinet-type fresh air is more used in commercial places and rarely used in households.
s it necessary to install the fresh air system?
Closer to home, since the fresh air system can purify the air and promote air circulation throughout the house, is it necessary to install it?
Many people think that there is no need to install a fresh air system, because the air purifier can also purify the indoor air, and you can breathe fresh air when you open the window. However, everyone must understand that an air purifier can only ventilate indoors, no matter how it purifies, it is always indoor air. Besides, if the weather is hazy or the air quality in the area is poor, is there really fresh air when the windows are opened?
Therefore, the existence of fresh air is actually to improve our quality of life and protect our health, such as diluting formaldehyde in the air, filtering PM2.5 and dust, and eliminating viruses and bacteria in the air. If you want fresh air in your home, it is still necessary to install a fresh air system. Of course, Xinfeng does not have to pretend, after all, it depends on the actual situation of the individual.
How to choose a fresh air system?
When purchasing a fresh air system, we must first decide which one to choose: the central fresh air system is expensive and has restrictions, so it is more suitable for large households that have not been renovated; the wall-mounted fresh air system has fewer installation restrictions and is more suitable for homes. Ordinary family well decorated.
In fact, the core of the fresh air system lies in the three aspects of fans, pipes, and filter materials. Therefore, when purchasing, we only need to pay attention to these aspects: noise, air volume, filtration method, pipe material, heat exchange, brand .
One, noise
A certain amount of noise is generated when the fresh air system is working, and the noise value mainly affects our experience. When purchasing, of course the lower the noise value, the better. Generally speaking, for a quiet fresh air system, the noise in the strongest gear should be controlled below 40dB.
2. Air volume
The air volume of the fresh air system, in cubic meters per hour, means how much air the fresh air system can deliver to the room per hour. In principle, the greater the air volume, the better the air supply effect, and the more fresh air in the room, but the larger the air volume also means greater noise. Therefore, in the selection of the air volume of the fresh air system, we should choose a suitable one. Numerical value, air volume = floor height * area inside the set.
Common fresh air systems have air volumes of 150m/h, 250m/h, 300m/h, 350m/h, etc. Generally speaking, for a house of about 50 square meters, 150 air volume is sufficient, and 250 air volume can meet the requirements of 100 square meters. For houses larger than 120 square meters, a fresh air system with an air volume greater than 350 must be selected.
Three, filter method
As mentioned above, in addition to ventilation and ventilation, the fresh air system can effectively filter impurities and pollutants in the outdoor air and deliver fresh and clean air to us, thanks to the filtering technology (filter) of the fresh air system. The filtration of the fresh air system is mainly divided into pure physical filtration and electrostatic adsorption. Pure physical filtration uses a filter element, while electrostatic adsorption uses static electricity generated by an electrostatic box to collect dust.
These two filtration methods have their own advantages and disadvantages. Physical filtration requires replacing the filter element, which is more expensive to use. Static electricity does not need to replace the filter element. It only needs to be removed for cleaning, but it will release ozone. The best way to filter, of course, is to mix and match the two, double filtering, the effect is better.
Four, pipe material
The piping of the central fresh air system mainly includes PVC hard pipe and PE hose. The price of PVC hard pipe is cheaper, but the attenuation of the air volume is relatively large, and the PE hose has a small attenuation of the air volume and generates less noise, but it is more expensive and has a larger number of holes.
If you are looking for cost-effectiveness, the house is not particularly large, and the rooms are not particularly large, you can consider PVC pipes. If you have certain quality requirements for the fresh air system and the budget is sufficient, it is better to choose PE hoses.
Five, heat exchange
The domestic fresh air system on the market can achieve a heat exchange rate of more than 80%. The higher the heat exchange rate, the higher the heat exchange rate, the less heat loss in winter and avoids the air being blown in from being too cold. In summer, avoid The air blown in is too hot, thereby reducing the pressure of the air conditioner and achieving the effect of energy saving.
Therefore, when we are purchasing, the brand is only the basis, and we need to pay attention to the above mentioned aspects. Together, they are the key to determining the quality of the fresh air system and our experience.
