The role and efficacy of air purifiers
The role and efficacy of air purifiers, many people can feel that the air quality is getting worse and worse, and air purifiers are also one of the products to improve the quality of life. So here is the role and efficacy of air purifiers for you to share.
The role and efficacy of air purifiers 1
The ability to adsorb, decompose or transform a variety of air pollutants (generally including PM2.5, dust, pollen, odors, formaldehyde and other decorative pollution, bacteria, allergens, etc.).
Function:
Air purifiers are used in the home, medical, and industrial fields, and the home field to a single class of household air purifiers for the mainstream market products. The most important function is to remove particles in the air, including allergens, indoor PM2.5, etc., but also to solve the problem of indoor, underground space, vehicle volatile organic compounds air pollution due to decoration or other reasons. Because the release of air pollutants in relatively enclosed spaces is characterized by persistence and uncertainty, the use of air purifiers to purify indoor air is one of the internationally recognized methods of improving indoor air quality.
Air purifier working principle:
Air purifier is mainly composed of a motor, fan, air filters and other systems, the principle of its work: the motor and fan in the machine to make the indoor air circulating flow, the contaminated air through the machine air filters will be various pollutants removed or adsorbed, some models of air purifiers will also be in the output of the air purifier. The air purifier will also be equipped with an anion generator at the air outlet (the high voltage of the anion generator produces negative DC voltage when working), which will continuously ionize the air and produce a large number of negative ions, which will be sent out by the microfan to form an anion airflow, achieving the purpose of cleaning and purifying the air.
1, passive adsorption filtration purification principle (filter purification class):
The main principle of passive air purifiers is: the fan will be the air pumped into the machine, through the built-in filter air, mainly able to play a role in filtering dust, odors, poisonous gases, and kill part of the role of bacteria. The filter is mainly divided into: particulate filter and organic filter. Particulate filters are divided into coarse filters, and fine particulate filters.
2, active purification principle (no filter type):
The principle of active air purifier and passive air purification principle of the fundamental difference is that the active air purifier to get rid of the fan and the filter limitations, is not passive waiting for the indoor air is pumped into the purifier filtering and purification, but effective, active release to the air in the purifier. Instead of passively waiting for the indoor air to be pumped into the purifier to be filtered and purified, it effectively releases the purifying and sterilizing factors into the air through the diffusion of air to reach all corners of the indoor air to be purified.
3, double purification class (active purification + passive purification):
This purifier is actually a combination of passive purification technology and active purification technology.
What is the harm of air purifiers
1, the air purification machine can filter out some of the harmful gases, is conducive to solving the indoor air environment. But there are shortcomings, the machine can not replace the source of fresh air, it is filtered out some of the harmful gases, but can not produce oxygen.
2. Generally speaking, this kind of machine will not produce secondary pollution and other harmful gases. Therefore, the air purifier should be combined with an extractor fan in order to get both a source of fresh air and remove some of the harmful gases.
Air purifiers for people who
1, pregnant women, pregnant women in the air pollution indoor will feel sick all over the body, dizziness, sweating, smoke dry tongue, chest tightness and want to vomit and other symptoms, the development of the fetus has a negative impact. The likelihood of developing heart disease is three times that of a child born to a pregnant woman who breathes fresh air.
2, children, children's bodies are developing, the immune system is relatively fragile, vulnerable to the hazards of indoor air pollution, resulting in decreased immunity, delayed physical development, induced blood disorders, increase the incidence of asthma in children, so that children's intelligence is greatly reduced.
To do purification of the air, certainly is good for people, so there will be no harm. If you want to talk about harm, it is certainly not purified air, the most harmful to the human body. Especially for pregnant women and children, this time are very sensitive time, if the indoor air is not good, it is likely that something happened, they are also the most need for air purification.
How to choose an air purifier
Filtered purifiers are safe and effective
Physical filtration air purifiers are the most common on the market today. It's the most common type of product on the market today, and its winning formula is safety and efficiency. This is determined by its working principle. Filtered air purifiers use the physical purification of the cartridge. Because only through the filter to carry out physical purification, purified air almost does not produce "side effects" on the human body, so it is a safer method. Said it is effective, because for different types of pollution, filter air purifier will use different "response method", for example, pre-filter can filter out larger dust, particles, etc.; activated carbon filter can filter out VOC, formaldehyde and other harmful gases, as well as unpleasant odors; HEPA filter can filter out HEPA filters can filter out viruses, bacteria, fungal spores, etc., to achieve the effect of "healthy air".
Noise issues determine the use of comfort
High CADR value means a lot of noise, so the purifier silent mode is very important, especially at night, sleep mode, generally do not exceed the limit of 30 decibels affecting the rest of the limit, so that the purifier can provide clean air without affecting the rest of the 12 models. Air purifier brand review data shows that CADR value, particle purification, formaldehyde purification performance is important.
Air purifier CADR value is very important
CADR is the United States and China recognized air purifier purification performance indicators, the same test environment, they can be used to express as well as to compare the performance of air purifiers. CADR is the rate of output of clean air, he was able to express the performance of air purifiers, but the value is not equivalent to how much clean air can be produced. CADR is the clean air output rate, it can express the performance of the air purifier, but the value is not equal to the amount of clean air that can be produced, the calculation of CADR also needs to add the natural decay rate of particles. We don't need to delve into CADR, we just know that the higher the CADR value, the better the performance.
Air purifiers should have the right area
Air purifiers are often labeled with an area of applicability in their specifications, which is a key parameter that is just as important as the purification performance. Generally speaking, the CADR300 or less of the product as far as possible in the environment of less than 40 square meters to apply, the purchase of purifiers according to the applicable area to select cost-effective products.
Air purifier purification performance determines the cost
In addition to the applicable area, another indicator derived from the CADR value - purification efficiency - is an important parameter for assessing the energy efficiency of air purifiers. The conversion relationship between the two is: CADR value (purification capacity per unit of time) ÷ power consumption = purification efficiency (purification capacity per unit of energy consumption). For example, if the rated power of an air purifier is 50w, and the CADR value of particles is 400m3/h, then its purification efficiency is 400m3/h ÷ 50w = 8m3/(h-w).