 
    
    Humidifier
Japanese Name:
加湿器
Romaji Name:
kashitsuki
Description
↓↓
A humidifier is a device that adds moisture to the air to increase humidity levels. It helps prevent dryness that can cause irritation in the skin, throat, and respiratory system, especially during dry weather or in heated indoor spaces.
History
↓↓
Before the invention of electric humidifiers, people used various manual methods to increase humidity. For example, people would place water basins on radiators or near heat sources to allow water to evaporate into the air. People also used wet cloths or vases of water to add moisture.
The first electric humidifier was invented in the early 20th century. These early models were quite simple and often used fans to blow air over a wet surface or water reservoir to increase humidity. These devices were mostly used in homes and offices to prevent dryness in the air, especially in areas with cold winters.
In the 1950s-1970s, ultrasonic humidifiers were introduced. These devices use high-frequency sound waves to create a fine mist of water that is released into the air. Ultrasonic humidifiers are quieter and more energy-efficient compared to traditional models, and they gained popularity in households.