How to improve indoor humidity in winter

In the weather with the highest temperature hovering around 10 degrees Celsius, we have spent the solar terms of light snow and heavy snow, and the footsteps of winter solstice are getting closer and closer. Although cold air has visited Beijing from time to time recently, the temperature in Beijing has been obviously high since the winter of this year, and it has been more than 4 degrees Celsius higher than normal recently. Experts pointed out that special attention should be paid to the prevention of respiratory diseases when the temperature is high in winter. The first trick: ventilation Zhao Min, director of the Infectious Diseases Department of the 302 Hospital of the People's Liberation Army, pointed out that when winter comes, the indoor pollution is several times or even ten times that of the outdoor. This is because many people like to stay indoors in winter, and indoor oxygen and light are often not enough, so many viruses and germs are easy to breed. It is suggested that it is best to open the window for ventilation at least twice a day, and each time is not less than 15 minutes. However, due to the cold outdoor air, the ventilation time should not be too long, up to 30 minutes. Families who use coal stoves for heating and gas water heaters should pay more attention to installing ventilation devices. In addition, it is also a good method to place a small and efficient negative ion generator indoors to keep the air fresh. You can also regularly fumigate the indoor air with vinegar, ozone and ultraviolet rays or light sanitary incense. The second measure: pay attention to the humidity of humidified air, which has the greatest impact on respiratory diseases. According to the national indoor air quality standard, the indoor air humidity standard in winter is 30% ~ 60%. In winter, the air is dry and the humidity is low, which leads to the spread of germs. Coupled with the use of heating and air conditioning, the humidity of indoor environment is often low. It is suggested to take some effective measures, such as drinking more boiled water; When heating indoors or heating, you can burn a pot of water on the stove to evaporate the water; Hang some wet clothes and towels indoors; Sprinkle water on the ground, put a basin of water indoors, and use an air humidifier or a negative oxygen ion generator to increase the moisture content in the air and enhance the comfort of the human body, thus avoiding the occurrence of respiratory diseases or alleviating their symptoms.