参考这个,你可以找到更多关于其他种类的说明。从我阅读的来说,蒸汽的最好
http://www.childrenscolorado.org/news/pr/2011/humidifier-white-dust.aspx
Children's expert, Dr. Deterding, has provided some facts and tips below for safe humidifier use.
Ultrasonic humidifiers can create
white dust, which can be seen on furniture near the humidifiers. Ultrasonic humidifiers can also put
organisms into the air. Both the white dust and the organisms can be harmful to the lungs, especially in babies and young children with smaller airways.
Ultrasonic humidifiers aren't necessarily bad humidifiers. If you use one, make sure to use distilled water and clean your humidifier properly every day.
Don't put ultrasonic humidifiers in an enclosed room, in case white dust emerges. Make sure a door or window is open.
Be sure to test-run your humidifier before putting it in a child's room to check for white dust.
Check with your pediatrician to see which kind of humidifier or vaporizer they recommend. Dr. Deterding suggests warm vaporizers, but be sure to put it in a place where your child will not be in danger of burning themselves from the steam.