portable air purifier."Misty" and "Mist free" humidifiers

　　So humidifiers are not the fundamental cause of discomfort and illness in our bodies, but rather the methods and methods we use have become a direct factor. Let's first learn about two common humidifiers on the market. One is the "foggy" humidifier, called the "ultrasonic humidifier", and the other is the "fogless" humidifier, scientifically known as the "evaporative humidifier".

　　The working principle of ultrasonic type is to generate ultrasonic waves through high-frequency oscillation of the atomizer, and then use ultrasonic waves to break water powder into small particles of 1-5 microns. This water mist is blown into the air, increasing air humidity. Generally speaking, this type of humidifier has a higher humidification rate and lower power consumption and price. The general price range is 100-1000 yuan. But if tap water is added to the ultrasonic humidifier, the water mist produced by ultrasonic vibration will evaporate and precipitate particles, which will deposit indoors and form white powder. If the human body is exposed to such an environment for a long time, inhaling these particles into the respiratory system, especially for people with sensitive respiratory tract, can trigger health problems.

　　The principle of an evaporative humidifier is to simulate the evaporation phenomenon in nature, accelerating the evaporation rate of water through the evaporation core, thereby achieving a fast and uniform humidification effect. The price is generally higher, with a price range of 400-3000 yuan, and the evaporative water core needs to be replaced regularly. However, this type of humidifier does not have high water quality requirements and can be directly used with tap water. But its problem is that it consumes more power and produces more noise.

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