Is it necessary for the fresh air system to operate 24 hours a day?

Today, when air pollution is getting worse, the air in our homes is no longer fresh. If we live in such a living environment for a long time, our body is prone to problems. In order to solve this problem, many friends have installed a fresh air system in their homes, hoping to use it to create an indoor environment that can breathe at ease. The fresh air system is a relatively new thing. Many people will have various problems in the process of using it. One of the concerns is whether the fresh air system needs to operate 24 hours a day?

Today, when air pollution is getting worse, the air in our homes is no longer fresh. If we live in such a living environment for a long time, our body is prone to problems. In order to solve this problem, many friends have installed a fresh air system in their homes, hoping to use it to create an indoor environment that can breathe at ease. The fresh air system is a relatively new thing. Many people will have various problems in the process of using it. One of the concerns is whether the fresh air system needs to operate 24 hours a day?

How the fresh air system works

Before answering this question, let us first understand the working methods of various fresh air systems. The one-way fresh air system mainly uses a filter to filter the air in one direction, and the gaps between doors and windows are used as exhaust outlets to exhaust air, that is, “forced exhaust, natural air supply”. When we turn on the fresh air system, because the dirty indoor air will be discharged outside, there will be a large difference in air pressure between indoor and outdoor, and the fresh outdoor air will be “sucked in” through the vents or gaps between doors and windows, thereby providing ventilation. The effect of qi.

The two-way flow fresh air system operates in the manner of mechanical air supply. It has independent exhaust and air supply systems. The indoor air is discharged through the air outlet, exhaust duct and exhaust fan, while the outdoor air is discharged through the air supply fan, air supply duct and The combined effect of the air outlet enters the room. The central fresh air system is suitable for large indoor environments such as villas. It can meet the fresh air requirements of the whole house, but it is necessary to lay the pipes and install related accessories in advance. If you think the amount of pipe laying is too large, you can also install wall-mounted or vertical cabinet-type fresh air fans to meet the purification needs of local spaces.

In order for the fresh air system to work, we must keep it in operation in order to continuously bring fresh air to the room. Then, in the use, what else should the fresh air system pay attention to?

Precautions for the use of fresh air system

It is best to turn on the fresh air system 24 hours a day. The fresh air system is a huge system. If it is turned on for a while and turned off for a while, it will not only be a kind of damage to the equipment, but it will also not be able to continuously provide fresh air and exhaust the dirty air in the room. If we turn on the fresh air system 24 hours a day, we can keep the indoor air clean and avoid secondary pollution. Seeing this, many friends may be worried about energy consumption.

In fact, a blower with 100 air volume is 9.8W in an ordinary apartment 24 hours a day, and 225.2W in 24 hours operation. In this way, the fresh air system in the home only consumes 1/4 kilowatt-hours of electricity every day, and only costs 1 cent. If calculated on the basis of 365 days a year, it costs about 36.5 yuan. Compared with turning on the air conditioner, turning on the fresh air blower for a long time can be regarded as an economical choice.

Although the use of the fresh air system is economical and cost-effective, it is best not to use it in hazy days. Because the small household fresh air system only installs a filter layer to filter large particles of dust and other pollutants, they cannot filter the PM2.5 in the air. If the fresh air system is turned on in the haze weather, the polluted air filled with PM2.5 will be introduced into the room, which will cause secondary pollution to the indoor environment. At present, only large-scale central fresh air systems can install HEPA filters that can filter PM2.5 particles. Therefore, we must remember to turn off the fresh air system in haze weather.

Do I need to plan ahead for installing a fresh air system?

The fresh air system is different from the air purifier. It needs to install pipes, filters and other devices, and there are 1-2 vents in each room, so it is necessary to determine whether to install the system in the rough room stage. In addition to ventilation, the fresh air system can also adjust the temperature and humidity of the air entering the room, making us feel more comfortable indoors.

At the same time, it basically has no effect on the load of the air conditioner and has a good energy-saving effect. If you still want to install a fresh air system after finishing the decoration, you can choose a wall-mounted fresh air fan, but its ventilation efficiency and heat exchange efficiency are only 70% of the overall installation of the fresh air system, and an 11 cm air outlet is required on the outer wall. Floor-to-ceiling windows or marble tiles are used on the exterior walls of the house, making it difficult to perforate and install. Therefore, if you want to install a fresh air system to make your life more comfortable, you must plan ahead.

Many friends choose long-term airtight windows because of the ventilation function of the fresh air system. Although the fresh air system can meet the ventilation requirements of everyone without opening the window to a certain extent, it is difficult to ensure that it is not designed and installed according to such requirements. Perfect results can be achieved when running in such a state, and not every fresh air system can guarantee that the intake of fresh air is fresh air. Take the simplest window ventilator as an example. It can only achieve better ventilation effect in winter. If the air supply outlet is arranged unreasonably, then there is no guarantee that clean air can reach every corner of the room. Therefore, the best way is to open the windows for ventilation at the right time while using the fresh air system.

How to maintain the fresh air system?

It is still not enough to only master the method of use when using the fresh air system. If we do not maintain it, after a period of use, you will breathe the same dirty air as the outside world. We need about 6 months to replace or clean the filter or filter, otherwise the dust attached to it will greatly weaken the purification ability of the filter. If you are in a place where the haze is serious, then the filter should be replaced or cleaned once 1-3 months to ensure the normal operation of the fresh air system.

As the only channel through which indoor air is exhausted, the exhaust vent is easy to absorb a large amount of dust after long-term use, which will cause blockage. Part of the dirty air will stay indoors and cause harm to our bodies. Compared with the filter screen, the cleaning of the air outlet is relatively simple, and it only needs to be cleaned with a professional cleaner.

If the fresh air system installed in your home has pipes, don’t forget to ask a professional cleaning staff to clean them when you find that the pipes continue to emit oily smoke. This is because it is difficult to collect dust in the ducts that have been in a ventilated state for a long time, but the appearance of oily smoke means that the ducts collect more dust and need to be cleaned up.

In addition to cleaning, we also need to check the air tightness of the fresh air system ducts and the mainframe connection and control panel from time to time. The fan will vibrate during operation. Over time, air leakage may occur at the joints of the pipes. The most obvious manifestation is the decrease in air volume. This will cause the purification effect to be greatly reduced, and leave dirty gas in the room, so we need to maintain it frequently.

In the same way, the control panel and other components of the fresh air system will also become loose, aging, adsorb dust, and collect moisture due to long running time. If we do not deal with it in time, it may lead to safety accidents in serious cases. Generally speaking, the service life of the fresh air system is ten to fifteen years. If the fresh air system in your home has a long service life, you must pay more attention to maintenance or replacement of the new system to avoid leaving safety hazards.

summary

Once the fresh air system is turned on, do not turn it off at will, because only in this way can you continuously breathe in fresh air and ensure that clean air penetrates into every corner of the room. Moreover, the general household fresh air system consumes less energy, and it will not increase too much cost if it runs for a long time. Therefore, it is necessary for the fresh air system to operate 24 hours a day without interruption.

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