With the spread of viruses and bacteria more and more widely, we are more and more aware of air purification, air purifiers can only ensure a fixed and limited range of clean air, if you want to travel, just rely on mask protection may not be enough. Portable air purifiers can be carried around, millions of negative ions with the purification, as if in the river and the forest. So is a portable air purifier really useful?
Do portable air purifiers work?
There are three types of portable air purifier products:
1. Necklace air purifier
This type of wearable air purifier is like a necklace that can be worn around the neck, generally by releasing negative oxygen ions to purify about 1 cubic meter of air near the head. But if the body is constantly moving, necklace air purifier purification speed can keep up with the speed of movement, this is a question worth thinking about.
2. Mask-type air purifier
Simply put a small air purifier (with a filter) is installed on the mask to purify the air breathed in the mouth and nasal cavity at a closer distance. However, it needs to be charged before use, and the volume is larger than the general mask, more like a mask, and a little strange to wear.
3. Handheld air purifier
Volume and a thermos cup are almost the same, you can carry it around to purify the air around the body, but I think it is not applicable and inconvenient, you need to keep it in your hand and hold it, put it in the bag and useless, so the feasibility of the outdoor is not great.
According to the test understanding, the portable air purifier purification effect is general, and outdoor pollution concentration is hundreds of times higher than indoor, so relying solely on a small air purifier can not play much of a role.
Portable air purifier how to achieve the purification effect?
1. Passive portable air purifier
Passive air purifier, the fan is used to pump air into the machine, through the built-in filter air, mainly able to play a role in filtering dust, odor, disinfection, and so on. This kind of filter air purifier mostly adopts HEPA filter + activated carbon filter + photocatalyst (cold catalyst, multi-distant catalyst) + ultraviolet sterilization and disinfection + electrostatic adsorption filter and other methods to deal with the air. Among them, HEPA filters have the role of filtering dust particles, other activated carbon, etc. mainly adsorption of the role of odor, therefore, it can be seen that the market with fan filters, photocatalysts, ultraviolet light, electrostatic, and other different labels, it seems to be very confusing air purifiers using the principle of work is the same, are passive adsorption filtration of the air purification.
2. Active portable air purifier
The active air purification principle and passive air purification principle of fundamental difference is that the active air purifier gets rid of the fan and filter restrictions, not passively waiting for the indoor air to be pumped into the purifier for filtration and purification, and then discharged through the fan, but the effective, active release of purification and sterilization factors in the air, through the characteristics of the air diffusion, to reach all corners of the room on the air is purified without any dead angle. At present, the more mature active purification technology is mainly the use of negative oxygen ions as a purification factor to deal with the air and the use of ozone as a purification factor to deal with the air two. These two types of air purifiers are typically based on the principle of active purification and work.
Notes on the use of portable purifiers
In outdoor activities, such as sand and dust and other inclement weather, please use a mask and, a portable purifier in a stationary state to get the best results.
Portable purifier metal chain using more than a dozen special process custom, and embedded in the anti-stringer design, do not pull to avoid disconnection.
Do not cover the top carbon brush for a long time during the use of a portable purifier to avoid static electricity or cause equipment failure.
For portable purifier charging please use a USB charging converter or computer for charging, can not be directly connected to the 220v voltage. Please organize the metal chain of the device when charging to avoid short circuits and safety hazards due to improper handling of the chain.
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