What is the principle of humidifier?

1. Household humidifiers generally atomize water by ultrasonic waves, and the atomized water vapor is blown out of the shell by a fan, thus achieving the effect of humidifying air. After the commercial power passes through the switching power supply, it outputs two voltages, 36V and 12V. Among them, 36V power supply steam atomization module and 12V power supply fan. In the circuit, D 1 and D2 are water shortage indicator and working indicator respectively; Reed switch is a liquid level detection switch; RT 1 is a potentiometer to adjust the fog. 02 as the core, and its peripheral circuit is the ultrasonic generating circuit. 2. Ultrasonic humidifier oscillates at a high frequency of 1.7MHZ to atomize water into ultrafine particles of 1-5 microns. Water mist diffuses into the air through pneumatic devices, which makes the air moist and rich in negative oxygen ions, which can purify the air, improve health and create a comfortable environment. 3. Thermal evaporation humidifier is also called electric humidifier. Its working principle is that water is heated to 100℃ in a heater to generate steam, and the steam is sent out by a fan.