Powered by Xiaomi Youpin appeared small handheld DOCO fan with built-in ultrasonic humidifier.
DOCO HF001 costs $ 10, is powered by a 2000 mAh battery, thanks to the stand it can be used both as a desktop fan and as a manual fan.
Humidification is said to reduce the air temperature by three degrees.
The fan has three speeds: 3200 rpm (up to 12 hours of operation on a single charge), 4100 rpm (up to 9 hours) and 5100 rpm (3.4-5 hours). The dimensions and weight of the fan are known - 178x92x140 mm, 155 g, but the volume of the water tank is unknown. I can assume that it is very small and the water will run out much earlier than the battery is discharged.
There is no new fan on Aliexpress yet, but it will surely appear soon.
Ultrasonic membranes are now used in humidifiers, in garden fountains and even in electric fireplaces to simulate smoke. I have always been an opponent of ultrasonic humidifiers: their owners complain about white deposits that appear on furniture and other surfaces (this deposits of salts from water), but few people think that the same plaque gets into the lungs of people using such humidifiers. I doubt it is harmless. In addition, ultrasound can also have a negative effect on a person, and in such a manual ventilator its source will be very close to the human face.
© 2020, Alexey Nadezhin
The main topic of my blog is technology in human life. I write reviews, share experiences, talk about all sorts of interesting things. My second project - lamptest.ru. I test LED bulbs and help figure out which ones are good and which are not so good.