What are the harmful substances in the indoor air?

Helium ammonia is a colorless, highly irritating odor that is lighter than air (specific gravity 0.5). Ammonia is an alkaline substance that corrodes and irritates the skin tissue that it contacts. It absorbs water from skin tissue, denatures tissue proteins, and saponifies tissue fat and destroys cell membrane structure. When the concentration is too high, in addition to corrosive effects, cardiac arrest and respiratory arrest can be caused by the reverse action of the trigeminal nerve endings. Ammonia is usually inhaled into the alveoli in the form of a gas. After being inhaled into the lungs, ammonia easily enters the bloodstream through the alveoli and combines with hemoglobin to destroy the oxygen transport function. The solubility of ammonia is extremely high, so it is mainly irritating and corrosive to the upper respiratory tract of animals or the human body and weakens the body’s resistance to disease. A small amount of ammonia is neutralized by carbon dioxide, and the remaining small amount of ammonia is absorbed into the blood and can be excreted with sweat, urine or respiratory tract. Some people may have symptoms such as skin pigmentation or finger ulcers when exposed to ammonia for a long time; tears, sore throat, hoarseness, cough, bloodshot, chest tightness, difficulty breathing, may be accompanied by dizziness after inhaling a large amount of ammonia in a short period of time. Symptoms such as headache, nausea, vomiting, and fatigue may cause pulmonary edema, adult respiratory distress syndrome, and respiratory irritation. Therefore, the damage of alkaline substances to tissues is deeper and more serious than that of acidic substances. ‍‍

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The role and function of the air purifier

Recently, due to the continuous development of the industrial industry, and ignoring the quality of air quality, the smog weather has followed since the beginning of winter, which has promoted the sales of air purifiers to increase year by year, and everyone is paying more and more attention to air quality. Because the smog contains a lot of bacteria and pollutants, which affect people’s health, let’s take a look at the role and function of the air purifier:
effect:
It can adsorb, decompose or convert various air pollutants (generally including PM2.5, dust, pollen, odor, formaldehyde, and other decoration pollution, bacteria, allergens, etc.).
Features:
Air purifiers are used in the home, medical, and industrial fields. Home-based home air purifiers are the mainstream products in the market. The main function is to remove particulate matter in the air, including allergens, indoor PM2.5, etc., while also solving due to renovation or
Air pollution problems of indoor and underground spaces and volatile organic compounds in vehicles caused by other reasons. The use of air purifiers to purify indoor air is an internationally recognized improvement in indoor airspace due to the persistence and uncertainty of the release of air pollutants in relatively closed spaces.
One of the methods of gas quality.
Relevant information:
How the air purifier works:
The air purifier is mainly composed of a motor, a fan, an air filter and the like. The working principle is as follows: the motor and the fan in the machine circulate the indoor air, and the polluted air passes through the air filter in the machine to remove various pollutants. Or adsorption, some models of air purification
The device also installs a negative ion generator at the air outlet (the high voltage in the negative ion generator generates DC negative high voltage during operation), continuously ionizes the air, generates a large amount of negative ions, and is sent by the micro fan to form a negative ion airflow to clean and purify the air. the goal of.
1, passive adsorption filter purification principle (filter purification class):
The main principle of the passive air purifier is to use the fan to pump air into the machine and filter the air through the built-in filter, which can mainly filter dust, odor, toxic gas and kill some bacteria. The filter screen is mainly divided into a particulate filter and an organic filter. One
The granular filter is further divided into a coarse filter and a fine particle filter. ,
2, active purification principle (no filter type):
The fundamental difference between the principle of the active air purifier and the passive air-purifying principle is that the active air purifier is free from the limitations of the fan and the filter screen, and is not passively waiting for the indoor air to be pumped into the purifier for filtration and purification. But effective and active to the air
The purification and sterilization factor is released, and the air is diffused to reach the corners of the room to clean the air without dead angle.
3, double purification class (active purification + passive purification):
This type of purifier combines passive purification technology with active purification technology.

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The role of the air purifier is what the role of the air purifier

Many consumer friends don’t have a special understanding of the role of air purifiers. Today, I will introduce the role of air purifiers.
Is the air purifier useful?
The best large room air purifier for pets can repeatedly filter the dust in the air and clean the air so that people can be in a pure air quality environment when they are at home or at work in the company. The value of the function is naturally self-evident.
There are many such products on the market today, the effect is very good, the improvement of air quality begins with our life, such as home, factory, company, etc., because our life is basically this law, not at home. Rest, then work outside, the working environment time is not too short, in order to make your environment better, start with the air purifier.
The role of the best air purifier for allergies:
1. Purifying air: air negative ions make gas-soluble substances such as dust, smoke, pollen, droplets of water droplets and suspended microorganisms easy to accumulate, can oxidize with organic substances in the air to eliminate the odor generated by them, and thus have clean air, The role of improving environmental quality;
2. Sterilization: Air negative ions can be combined with bacteria, microbial viruses, etc. attached to the dust in the air to make them fall.
Experimental studies have shown that air negative ions have a strong inhibitory effect on airborne microorganisms, so that the virus loses its ability to attack cells, thereby reducing the effect of bacteria purifying the air;
3, eliminate static electricity: static electricity is generally caused by positively charged ions, negative ions in the air will be combined with positive ions, to eliminate the role of static electricity;
4. Biological effects: Experimental studies and clinical observations have shown that air negative ions have many biological effects on the body.
Can the air purifier be opened continuously for 24 hours?
As long as the fan life, wear, heat dissipation is no problem. Because in theory, any electrical appliance can operate 24 hours a day without rest, but the electrical appliance will have a service life, which is calculated according to the time of use.
For the air purifier, after a long time of opening, the loss of the filter material is large, for example, the material that can be used for one year can be replaced only after half a year or three months. It is recommended to turn on the machine when someone is there and turn off the machine when no one is there. For example, if you have children, old people, etc. who are at home for a long time, and when you sleep at night, be sure to open them.
In one case, some electrostatic or plasma discharge type purifiers may generate a small amount of ozone during use. The long-term operation may cause indoor ozone concentration to exceed the standard. Such a purifier is not recommended for 24 hours.
It can be discriminated by whether the air outlet has an obvious odor after opening for a long time.
Does the air purifier produce radiation?
From the point of view of decontamination, the concentration of pollutants near the outlet of the purifier is lower, but there are drawbacks such as blowing sensation and loud noise. When the room is small, the distance of the purifier has little effect on the concentration in the room.
It is recommended that the air purifier be operated slightly away from the person because it may adsorb pollutants from the air around the purifier.
A good air purifier should have no radiation, because of the radiation problem, noise problem, secondary pollution problem, etc. have been considered when the product leaves the factory.
However, due to the chaotic market of air purifiers, the quality of some small brands and OEM products is difficult to guarantee. It is recommended to be as far away as possible.

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Is the air purifier useful?

The air purifier can detect and control indoor air and formaldehyde pollution, bringing fresh air to our interior.

Which includes
1) Settling particles in the air to effectively settle various inhalable suspended particles in the air such as dust, coal dust, smoke, fiber impurities, shavings, pollen, etc., to avoid causing allergic diseases, eye diseases, and other diseases.
2) Remove microorganisms and pollutants from the air, effectively kill and destroy bacteria and viruses in the air and on the surface of objects, and remove dead dandruff and pollen from the air to reduce the spread of diseases in the air.
3) Effectively eliminate odor, effectively remove the strange smell and polluted air emitted from chemicals, animals, tobacco, oil smoke, cooking, decoration, garbage, etc., and replace indoor gas continuously for 24 hours to ensure a virtuous circulation of indoor air.
4) Rapidly neutralize chemical gases, effectively neutralize harmful gases emitted from volatile organic compounds, formaldehyde, benzene, insecticides, aerosol hydrocarbons, and paints, while at the same time reducing the discomfort caused by inhaling harmful gases.

So, can the air purifier really eliminate pm2.5?
Air purifiers have become a must-have home appliance for many families. They have a small role in indoor air purification. They can detect and filter PM2.5 in the air and effectively protect the family’s respiratory health. In the smog weather, the indoor anti-mite air purifier can not be less.

Is the best rated indoor air purifiers effective for removing formaldehyde?
First of all, we must understand that formaldehyde is produced by decoration and raw materials, and it cannot be removed for a long time. To solve the problem of formaldehyde permanently, it is necessary to remove the pollution source of the decoration or raw materials from the source. Otherwise, it can only be treated by formaldehyde, but if the formaldehyde exceeds the standard, then the treatment can not be completed. The air purifier is an auxiliary means, it is recommended to open 24 hours, which has a certain elimination effect on formaldehyde.

So what is the best way to remove air purifiers?
Most of the air purifiers are composed of HEPA filter and activated carbon filter. HEPA is mainly used to purify solid pollutants such as dust and PM2.5. The activated carbon filter is mainly used to adsorb volatile gases such as formaldehyde and odor.

There are two necessary conditions for indoor air quality to meet certain cleanliness standards.
First, it must be ensured that the indoor air reaches a certain number of air changes, that is, the fan built in the cleaner has a certain amount of air.
Second, the purification efficiency of the cleaner must be relatively high. Clean Air Volume (CADR) is the physical quantity that quantifies the two necessary conditions above the cleaner.
In general, the larger the CADR value, the higher the purification efficiency of the purifier. That is the clean air output ratio, which directly affects the purification efficiency. The higher the CADR value, the higher the purification efficiency of the purifier and the larger the applicable area. It can be seen that CADR is an important indicator to measure the excellence of an air purifier, but note that this is not the only or dominant indicator.

What should I pay attention to when purchasing an air purifier?
The brand, function, performance, design, and price of the air purifier are very different and dazzling. Consumers are advised to purchase products according to their actual needs, not as many features as possible. For example, for consumers who need to protect PM2.5, it is recommended to choose an air purifier with an outstanding PM2.5 purification capability. Newly renovated homes can focus on air purifiers that have outstanding formaldehyde and toluene capabilities.
At the same time, when purchasing, try to choose a big brand, the quality will be more secure.

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Can the air purifier guarantee indoor air quality?

● In addition to bad weather, outdoor air is better than indoors!

Many people think that the outdoor air is dirty, and the use of air purifiers in the home should ensure the air quality, but it is not.

In addition to bad weather, outdoor air quality is better than indoors.

Because of the outdoor air circulation, although there are many kinds of germs, the concentration is very low, and it will not cause disease, but it can stimulate the respiratory tract to resist disease.

Even if an air purifier is used at home, it is not a fungicide.

● Air purifier filter network is easy to accumulate bacteria, need to pay attention to cleaning and replacement!

In the process of using the best indoor air purifier, indoor bacteria and some particulate matter will be blocked by the filter together, and the bacteria may be eaten by the particulate matter and rapidly multiply in the indoor warm environment.

If the filter ages or the density of the bacteria reaches a certain amount, it may spread to the room, which is very likely to cause disease.

Therefore, if an air purifier is used in the home, it is necessary to pay attention to the filter must be replaced according to the manufacturer’s instructions, and usually pay attention to the cleaning of the filter.

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Why should I change the filter regularly?

The air purifier has a cost of use. In addition to the electricity bill, it mainly comes from the cost of replacing the filter screen. Generally, it is replaced once or twice in one year. But we also need to pay attention to the small common sense of filter replacement, which is convenient for us to use the air purifier better.
For now, air purifiers with active purification technology are popular, as we can see from the list of major e-commerce air purifiers. Then, the choice of an active purifying air purifier needs to face the cost of use, which is the problem of consumables. Many users have a headache for how to clean the air purifier filter.

The air purifier has at least three layers of filters. Usually, the pre-filters are also pre-filters, and the main function is to filter out dust. If the filter screen is dirty during normal use, the user only needs to clean it, and there is no need to replace it regularly.
What needs to be replaced is the HEPA filter. Air purifiers use such filters to significantly increase the efficiency of adsorption of small pollutants. The HEPA network is characterized by air passing freely, but fine particles cannot pass, and it is most effective for pollutants such as smoke, dust, and bacteria. Filter media, related content: Whether the air purifier can filter the oil mist.
The HEPA filter is used for a period of time. The built-in granular activated carbon absorbs a large number of pollutants. Once it exceeds the amount that it can adsorb, it can no longer complete the adsorption work. In terms of image, just like the sponge absorbs water, there is a concept of degree. If it absorbs too much water, it will reach a saturated state, as is the granular activated carbon.

So now the question is coming, how do users judge that the HEPA filter needs to be replaced? In fact, the easiest way is to look at the color. The HEPA filter is pure white in a clean state. After a period of use, it will gradually turn yellow and finally appear black. At this time, the filter needs to be replaced regularly.
As for how long the filter is replaced, there is no clear mandatory rule. This is because each user uses an air purifier product at a different frequency, and the air environment is different. The product with a high frequency of use has a natural time to replace the filter screen.
The price of HEPA filters for household air purifiers ranges from 100-500 yuan. Therefore, when purchasing air purifiers, if you are sensitive to the cost of use, you may wish to search for the price of the filter in the e-commerce platform before purchasing or call the manufacturer to ask for it.
The high-quality filter can intercept finer particles while being effectively ventilated. For example, HEPA has high filtration efficiency, low flow resistance, and can be used continuously for a long time. It is often used as a high-quality filter in air purifiers. For example, in some air purifier filters, H11 medium efficiency filter and H13 high-efficiency filter double HEPA filter paper can be used to filter very small particles as small as PM0.1.
When we buy an air purifier, we must pay attention to the quality of the filter. High-quality filter screen can significantly improve the efficiency, effectiveness and service life of air purification

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