Do you know how to buy an air purifier? Although air purifiers are not as large as vertical air conditioners and refrigerators, the considerations for purchasing them are not less than those for large electrical appliances.
How to buy an air purifier?
Seasonal changes, colds, and allergies increase, and dust mites like to breed in a humid and warm environment, moisture in the air and home bedding, will continue to reproduce and produce excreta, the moisture released by the skin and human body flakes, just to provide dust mites with sufficient food; dust mite excreta produced by the enzyme, resulting in respiratory allergies and infections.
But also to undermine the skin's resistance to protect the function of the human body to produce serious skin diseases, if you want to solve this nuisance, you need to buy an air purifier to protect the skin. The enzymes produced by dust mite excreta cause respiratory allergies and infections and also destroy the protective function of the skin, causing serious skin diseases.
There are many types of air purifiers on the market today, and they can be distinguished into five categories based on their internal design and functionality:
1. HEPA filter paper
HEPA filter paper can filter 0.3 microns (um) above the dust, Taiwan is an island-type humid climate, whether the filter paper will adsorb water to reproduce more moldy bacteria, the use of filter paper to isolate airborne pollutants can only isolate but can not be sterilized, but also need to replace the filter paper regularly, often costing two to three thousand dollars per month, and more so that the consumer wallet loss of blood.
2. Activated carbon filter
Mainly from incomplete combustion (common household gas water heater triggered by carbon monoxide poisoning) or second-hand smoke.
3. UV lamp or photocatalyst (TiO2)
Ultraviolet lamps must be set up for more than 6 hours to completely sterilize, and photocatalysts, the principal role is to decompose water in the air (H2O) into hydroxide ions and oxygen ions, through the air cycle to achieve sterilization and decomposition of organic solvents, the general air purifier wind speed of about 3 meters per second, the bacteria in this speed is impossible to stop, how can the bacterial be achieved?
4. Ozone
Concentration must be more than 2ppm, and stay more than 2 hours to achieve the basic sterilisation. But the human body breathing to 0.5ppm or more will suffocate and die, trace (0.02 ~ 0.04ppm) of ozone will have a sense of freshness, the market some ozone machine will be too high due to the concentration of a timer to control the concentration of space, so the use of careful attention is needed.
5. Negative ions
The use of negative ions is quite wide, negative ions will break down the smoke into microparticles so that our eyes can not see (such as water droplets evaporate into water molecules), and no disappearance in this space, the lungs at this time is an air purifier, inhaling nano-particles (attached to the respiratory organs), and at the same time, you can find negative ions at home around the machine is full of microscopic black particles can not be wiped off!
What to choose when choosing an air purifier?
Please pay attention to whether the product has a unit test of sterilization report.
The cost of filter supplies can be saved, choosing a consumable air purifier is not only environmental protection but also saves money.
Pay attention to the product labeling is clear, there is no indication of the use of ping and power consumption, can be used for a long time 24 hours, bear in mind that the accumulation of electricity is also very alarming.
Electromagnetic waves are very harmful to the human body, while having the European CE, U.S. FCC, and Japan VCCI testing is good, if you can reach the medical level (CE: EN60601-1-2) testing is best, Taiwan testing can not be less.
Functionality more or less? In addition to dealing with smoke, dust, odor, bacteria, mites, and moisture can deal with toxic formaldehyde and toluene.
After expert research, one should pay attention to the following matters when buying air purifiers:
See whether the air purifier products have test reports.
The filter material, good filter material adsorption of pollutants above 0.3-micron capacity of up to 99.9% or more, if the indoor smoke pollution is more serious, you can choose to remove the dust effect more significantly purifier products.
The purification efficiency: the purification efficiency depends on the size of the room area, a large area should be selected to purify the air purifier with a large air volume, such as, 42-72 square meters of the room should be selected to purify the air volume of the unit in the 365 cubic meters per hour of the air purifier.
The service life: first of all, we ask about the service life of the air purifier, good usually reaches 12-15 years.
Consumers also have a major point to understand their use of air purifiers is mainly want to use it to achieve which effect. For example, the main thing is to use it to eliminate formaldehyde, benzene, TVOC, and other harmful substances, or mainly used to eliminate smoke, dust, and so on.