The performance index of air purifier is "three, high and low". Whether it is manufacturer publicity or user choice, the "three, high and low" performance index is undoubtedly the first.

Air purifiers are rated at a CADR value. For home appliance air purifier, before, more than 600m3/h is the magnitude of gale, now more than 800m3/h is the magnitude of gale magnitude.

Air purifiers are rated at a CADR value. For home appliance air purifier, before, more than 600m3/h is the magnitude of gale, now more than 800m3/h is the magnitude of gale magnitude.

The wind volume is related to the number of air changes, and it is related to the rate of purifying pollutants. The number of air purifier in the United States is 4 times / hour ~5 times / hour. China's indoor and outdoor environment in China is relatively worse than that of the United States, and the number of air change should be set a little larger. Practice has proved that the number of ventilation changes to meet the disinfection requirements should be greater than 8 times / hour, in addition to formaldehyde, the number of ventilation requirements is higher. Because of the continuous release of formaldehyde, the rate of air purification is greater than the rate of formaldehyde release.

 

Air purifier and air disinfection machine are to choose the air volume according to the use space, and should not use the applicable area to choose the air volume.

The effective service life of CCM air purifier determines the time to replace the filter screen. It is generally 8~12 months and can be called high efficiency level. The air purifier is generally large, and there is no problem with CCM reaching efficiency level. Now almost all products of the air purifier on sale can reach high efficiency level. Someone used to specialize in the concept of no consumables or CCM (for a few years), but is not mainstream technology at international and domestic. Sanitary products are still safer to replace in time, including baby diapers, sanitary napkins and masks, which are advocated one-time.

 

Purification energy efficiency is the index of energy conservation, there are mandatory implementation standards, before, the energy efficiency index of air purifier reached 5m3/(h.w) is efficient, now to achieve 11m3/(h.w) is efficient.

Noise is the most differentiated indicator of air purifier and air disinfection machine. Especially for the wind volume products, noise may be the most important indicator to judge the overall level of the product. The maximum noise specified by the national standard of the air purifier is 70dB (A), and the maximum noise specified by the air disinfection machine standard is 60dB (A). Many air purifiers require them to upgrade to the standard of air disinfection machines, which may be difficult to get noise indicators to achieve. The air purifier and the air disinfection machine are measured at the sound and power level. Many fresh air machines are measured by the sound pressure level, the two should be about 7dB (A) difference, look at the noise indicators, please be sure to explain or see which way of measurement.

There are many air purifier brands, and use various technologies, but, now more than 95% is filtered, in line with the international trend. What technology is used is not important, the key depends on the "three high and low" index. When you publicize or consumers are buying, you must pay attention to the "three high and low" indicators of air purifier.

High-quality wind volume air purifier generally has the "three removal" function, that is, removing particulate matter, bacteria and gaseous pollutants (such as formaldehyde).

 

In addition to particulate matter is the basic performance of air purifier, generally required, in indoor particulate matter (such as PM2.5) exceed 10 times, require 1 hour, remove 90%, that can meet the standard, indoor air particles can refer to the guiding value of the World Health Organization, namely 10 micrograms / cubic meter (PM2.5). That is, when the concentration of PM2.5 in the indoor air is 100 micrograms / cubic meter, the start-up for 1 hour, which can be less than 10 micrograms / cubic meter. Some high-quality air purifiers can reach the level of PM2.5 quality concentration not detected, and some air purifiers can reach the expected standard value in half an hour or less.

In addition to gaseous pollutants (take formaldehyde as an example), the effect of the gale volume air purifier is also very praised. In the case that the formaldehyde concentration in the indoor air exceeds 10 times, start on for 1 hour and remove 90%, that is, it can meet the standard. The formaldehyde in the indoor air can refer to the standard of 0.07 micrograms / cubic meter of the new version of the Indoor Environmental Pollution Control Code of Civil Construction Engineering. That is, if the formaldehyde concentration in the indoor air is 0.7 micrograms / cubic meter, the start-on for 1 hour, which can be less than 0.07 micrograms / cubic meter. Under the premise of ventilation control and pollution source control, the use of windy air purifier can reach the standard of 0.07 micrograms / cubic meter and can prevent the rebound. For the fine decoration of the construction environment, the requirements to reach 0.07 micrograms / cubic meter without rebound, a little difficult.