Daniel
Member
Many people doubt that the air purifier is useful because it is caused by industry chaos and lack of supervision, uneven product quality, and false propaganda from manufacturers. Of course, most people do not understand the principle and target pollutants of the air purifier (PM2.5 has become a well-known secret for a few years). If there are pregnant mothers, the elderly and children at home, it is best to prepare an air purifier. Also, it is best not to smoke.
How does the air purifier work? What to purify? Why is there so much dust in the filter?
Must start from the working principle. Most household air purifiers draw a certain volume of contaminated air through the motor in the device, and pass through several layers of pre-cleaned filter, activated carbon filter / HEPA high-efficiency air filter, silver ion filter, negative ion generator, etc. Depending on the brand) After filtration, clean air is released to reduce indoor pollutants, improve air quality and remove odors. Of course, the actual process will be more complicated than you think, but after filtering, most of the harmful substances are left in the air purifier.
Indoor air purifiers on the market mainly purify particulate matter in the air. Particulate matter includes fine particulate matter PM2.5 and respirable particulate matter PM10, and of course pollen, dust, mites, heavy metals and other harmful substances. Compared with PM10, PM2.5 is dangerous because of its small size (<2.5 microns), it is not easy to be exhaled after entering the lungs, and it is easy to cause human diseases by carrying bacteria. The limit unit of human respiratory tract mucosa is about 10 microns. Red blood cells with a volume of 6-8 microns can penetrate capillaries, and the smaller PM2.5 can directly enter the alveoli through the bronchus, and even the human circulatory system. Toxic substances such as heavy metals, bacteria, and microorganisms can cause allergies, lung discomfort, and even inflammation and blockage, and damage the respiratory system. It is not surprising that lung cancer will last for a long time. The size is roughly as follows:
Micron level: dust mites <PM0.3 <smoke <bacteria <PM2.5 <red blood cells <PM10 <visible dust <hair
Can the effectiveness of air-clean products be measured? Since the air purifier is useful, what factors determine the quality of the product? Four points to comprehensively judge the effect of the air purifier.
1. Take a look at the total amount of clean air output. It indicates whether the purification is strong or not. With the CADR value as a reference, how many cubic meters of particulate matter or formaldehyde can be purified in one hour. You can think of it as the speed of purification. The higher the number, the greater the power, and the applicable area for purification also increases. In the case of villas, a CADR value of more than 1000m³ / h must be used. The air purifier is like a runner, the higher the value, the faster he runs;
2. Look at the cumulative total purification. That is, the CCM value represents the level of the ability to purify pollutants, or is an index to judge the durability of the CADR value of the air purifier. That is, with the use of the air purifier, when the CADR value decays to 50% of the initial value, the total weight of accumulated pollutants, in mg. According to particulate matter and formaldehyde, the weight is divided into 4 grades. Similarly, it is still the runner, the higher the value, the longer he runs;
3. Look at the energy efficiency rating. Divided into qualified level and high efficiency level. The amount of clean air produced per unit power consumption under rated conditions. Can be understood as efficiency. Of course, this is not the same as the air purifier "asthma" caused by the purifier filter, which is inevitable. Choose the high-efficiency grade, after all, it is necessary to save energy and reduce emissions, everyone knows the truth;
4. Noise. When the air purifier is turned to the maximum wind speed, the corresponding noise is generated. In theory, the lower the noise, the better, but after all, the air purifier is not always turned on to the maximum. This depends on personal acceptance. What is more important is the noise in the air purifier sleep mode, after all, this is directly related to rest. In short, if you want to quantify the effectiveness of the air purifier, just look at the above four indicators, "three high and one low" is no problem.
To sum up, since we are unable to change the environment, we can only use effective methods to protect the health of ourselves and our family. When the air is good, open more windows to ventilate. When the air is not good, we still choose an air purifier that meets the new national standard. Keep it at home. Regarding air purification technology, industry knowledge and product purchase, I will pick some key content to share and discuss with you later. I hope that the answer will give everyone a scientific understanding of the air purification industry and products, have the basic discrimination ability, and spend the long haze season.
How does the air purifier work? What to purify? Why is there so much dust in the filter?
Must start from the working principle. Most household air purifiers draw a certain volume of contaminated air through the motor in the device, and pass through several layers of pre-cleaned filter, activated carbon filter / HEPA high-efficiency air filter, silver ion filter, negative ion generator, etc. Depending on the brand) After filtration, clean air is released to reduce indoor pollutants, improve air quality and remove odors. Of course, the actual process will be more complicated than you think, but after filtering, most of the harmful substances are left in the air purifier.
Indoor air purifiers on the market mainly purify particulate matter in the air. Particulate matter includes fine particulate matter PM2.5 and respirable particulate matter PM10, and of course pollen, dust, mites, heavy metals and other harmful substances. Compared with PM10, PM2.5 is dangerous because of its small size (<2.5 microns), it is not easy to be exhaled after entering the lungs, and it is easy to cause human diseases by carrying bacteria. The limit unit of human respiratory tract mucosa is about 10 microns. Red blood cells with a volume of 6-8 microns can penetrate capillaries, and the smaller PM2.5 can directly enter the alveoli through the bronchus, and even the human circulatory system. Toxic substances such as heavy metals, bacteria, and microorganisms can cause allergies, lung discomfort, and even inflammation and blockage, and damage the respiratory system. It is not surprising that lung cancer will last for a long time. The size is roughly as follows:
Micron level: dust mites <PM0.3 <smoke <bacteria <PM2.5 <red blood cells <PM10 <visible dust <hair
Can the effectiveness of air-clean products be measured? Since the air purifier is useful, what factors determine the quality of the product? Four points to comprehensively judge the effect of the air purifier.
1. Take a look at the total amount of clean air output. It indicates whether the purification is strong or not. With the CADR value as a reference, how many cubic meters of particulate matter or formaldehyde can be purified in one hour. You can think of it as the speed of purification. The higher the number, the greater the power, and the applicable area for purification also increases. In the case of villas, a CADR value of more than 1000m³ / h must be used. The air purifier is like a runner, the higher the value, the faster he runs;
2. Look at the cumulative total purification. That is, the CCM value represents the level of the ability to purify pollutants, or is an index to judge the durability of the CADR value of the air purifier. That is, with the use of the air purifier, when the CADR value decays to 50% of the initial value, the total weight of accumulated pollutants, in mg. According to particulate matter and formaldehyde, the weight is divided into 4 grades. Similarly, it is still the runner, the higher the value, the longer he runs;
3. Look at the energy efficiency rating. Divided into qualified level and high efficiency level. The amount of clean air produced per unit power consumption under rated conditions. Can be understood as efficiency. Of course, this is not the same as the air purifier "asthma" caused by the purifier filter, which is inevitable. Choose the high-efficiency grade, after all, it is necessary to save energy and reduce emissions, everyone knows the truth;
4. Noise. When the air purifier is turned to the maximum wind speed, the corresponding noise is generated. In theory, the lower the noise, the better, but after all, the air purifier is not always turned on to the maximum. This depends on personal acceptance. What is more important is the noise in the air purifier sleep mode, after all, this is directly related to rest. In short, if you want to quantify the effectiveness of the air purifier, just look at the above four indicators, "three high and one low" is no problem.
To sum up, since we are unable to change the environment, we can only use effective methods to protect the health of ourselves and our family. When the air is good, open more windows to ventilate. When the air is not good, we still choose an air purifier that meets the new national standard. Keep it at home. Regarding air purification technology, industry knowledge and product purchase, I will pick some key content to share and discuss with you later. I hope that the answer will give everyone a scientific understanding of the air purification industry and products, have the basic discrimination ability, and spend the long haze season.
