In recent years, respiratory diseases caused by air are increasing, which makes the public pay more attention to healthy breathing. about

Air purifier and fresh air system are common for air purification. Air purification by air purifier belongs to internal circulation,

The scope of use is relatively limited, and the purified air of the fresh air system belongs to external circulation, taking into account internal circulation, and the scope of use is also relatively wide

Wide. Therefore, the fresh air system is increasingly sought after by home users. Where should I install the fresh air system for the first time

What time do you start?

The fresh air systems on the market include one-way flow fresh air fan, two-way flow fresh air fan, full heat exchange two-way flow fresh air fan and dehumidification

Wet fresh air fan, the most mainstream is full heat exchange two-way flow fresh air fan. The fresh air system is equipped with two groups of air ducts indoors,

One group sends fresh air and the other discharges waste gas to form an effective air circulation system. The specific functions of the fresh air system are:

Introduce outdoor fresh air; Remove the dirty air in the room; Purify indoor air; Isolate outdoor noise; block

Outdoor dust entry; Control room humidity; Prevent indoor articles from mildew; Reduce energy consumption of air conditioning and floor heating and avoid

No window opening, potential safety hazards, etc.

The system of fresh air system is relatively simple, but some fresh air systems can not achieve the effect, so buy fresh air fans

When, you can start from four aspects: air volume, noise, convenient maintenance and fresh air effect

Fresh air can get good results. Many people are not satisfied with the fresh air effect because the fresh air fan is improperly selected and installed

It is caused by improper installation and untimely maintenance, so we should pay more attention to these fresh air selection methods.

Air volume: the fresh air system draws in the outdoor air through the fan for filtration, and then sends the purified air

When entering the room, the fan will discharge the indoor dirty air out of the room, where the fan plays a key role

The single fan with higher power is adopted for some fresh air fans, and the double fan with lower power is adopted for some fresh air fans

It also determines the amount of fresh air. Large air volume, fast ventilation and higher freshness of indoor air; Small air volume, air exchange

The air is slow and the indoor air is more polluted, which can not solve the fundamental problem of indoor ventilation.

There are two ways to calculate the volume of fresh air: the first is based on the population, 30m per person per hour

Fresh air volume; The second is calculated according to the house area and ventilation times, that is, the area of the house * the indoor floor height*

The number of air changes (generally 0.7-1.5 air changes per hour for household use). In the actual calculation, two

Compare the results of the two calculation methods, select the fresh air volume with large number, and then combined with the actual air volume of the fresh air fan,

Finally, choose the air volume of the fresh air fan suitable for your own home.

The noise level and the power of domestic fresh air fans are relatively low, and the power consumption is only more than 100 watts per hour. Therefore, it is recommended to 24

It is normally open for hours and can ensure the best air purification effect. However, the installation position of fresh air fan in each family is different

There is a certain difference. If the fresh air fan installed in the cloakroom is too noisy, resulting in the decline of sleep quality, it will

It's not worth the loss.

The noise of the fresh air fan is directly related to the air volume. The greater the air volume, the greater the noise will be. Therefore, the fresh air fan is safe

The installation position is quite critical. Try to install fresh air fans in public areas, balconies, kitchens, toilets and other places,

Reduce the noise impact on the bedroom when the fresh air fan works. When installing the fresh air fan, the sound insulation shall be reduced

Noise treatment: at the air outlet of the room, the noise value is negligible, and the feeling of breeze will not bring great impact

Noise impact. Of course, the fresh air fan itself is also the source of noise, and the DC variable frequency fan is more likely than the AC variable frequency fan

Low fan noise.

Maintenance is convenient. After the fresh air fan works for a period of time, there will be cleaning and replacement of filter screen and replacement of full heat exchange core

Cleaning and replacement can maintain better fresh air purification effect, so the later maintenance of fresh air fan is very important,

If the fresh air system is not maintained, the secondary pollution will be more serious. At the same time, the aesthetics of fresh air fan installation should also be considered.

For the split fresh air fan, it is convenient to maintain. The machines are exposed indoors. Only the door needs to be removed

The filter screen can be easily replaced and cleaned. For ceiling type fresh air fan, maintenance, cleaning and replacement of filter screen shall be considered

The problem is that some fresh air fans are overhauled and the filter screen is replaced on the side, so the installation position of the fresh air fan cannot be too close to the wall,

Sufficient disassembly space shall be left; Some fresh air fans are overhauled at the bottom and the filter screen is replaced, so the installation of fresh air fans is very important

In combination with the ceiling design, sufficient manhole size shall be reserved to avoid damaging the decoration due to the inability to open the maintenance cover plate.

Fresh air effect the purpose of installing the fresh air system is to replace the indoor air and enjoy the new air without opening the window

Fresh natural air. The job of the fresh air fan is to remove haze, formaldehyde and purify the air, which are taken as

It depends on the purification and filtration effect of fresh air fan. The purification index of fresh air fan is PM2.5 purification rate and enthalpy value, which is higher than that of main engine

The better the performance, the better the purification effect and the less power consumption. The accuracy of the filter screen of the fresh air fan determines the degree of air purification,

General fresh air fans include primary efficiency filter screen (some are replaced by medium efficiency filter screen) and medium efficiency filter screen (some are straight)

Double HEPA screen (instead of HEPA screen) and high-efficiency filter screen (HEPA screen) are adopted. The grade of filter screen is also from g1-h13,

Of course, the higher the level, the better the purification effect. It is enough to use the household fresh air fan to level H11, and the purification rate of PM2.5 has been improved

It can reach 99%.

Functions of fresh air system

What points should be paid attention to in the selection of fresh air?

summary

The system of fresh air system is relatively simple, but some fresh air systems can not achieve the effect, so buy fresh air fans

When, you can start from four aspects: air volume, noise, convenient maintenance and fresh air effect

Fresh air can get good results. Many people are not satisfied with the fresh air effect because the fresh air fan is improperly selected and installed

It is caused by improper installation and untimely maintenance, so we should pay more attention to these fresh air selection methods.