What should I do before the air conditioner is turned on for the first time when I encounter the new crown virus in summer?
In a live broadcast last night, Dr. Zhang Wenhong stated that China’s epidemic prevention and control has done a good job. When people wear masks, the probability of contracting the new crown virus is very small. He said that when it is hot, you can turn on the air conditioner and wear a mask.
Now that the prevention and control of the epidemic cannot be relaxed, can the air conditioner be turned on? What are the risks of “air-conditioning disease" that may be faced by staying in an air-conditioned room for a long time? This summer, how to cool down the heat in a healthy and scientific way?
Master the correct opening "posture"
Shopping malls, office buildings, hospitals, large hotels and other places often use central air conditioning, and the use of central air conditioning in confined spaces may lead to the spread of the new crown virus.
This is by no means alarmist. During the SARS period, a hospital had a group infection caused by the use of central air-conditioning. In April of this year, an article published in "Emerging Infectious Diseases" also touched on this issue. In a restaurant with central air-conditioning, a total of 10 people from three families, A, B, and C, ate. As a result, every family appeared. Infected.
On February 12, relevant national departments issued the "Guidelines for the Operation and Management of Air Conditioning and Ventilation Systems in Offices and Public Places During the New Coronary Pneumonia Epidemic" to guide the safe and reasonable use of air conditioning and ventilation systems in office and public places to prevent the spread and spread of the epidemic.
On May 6, at the press conference on the prevention and control of the new type of coronavirus pneumonia in Beijing, Liu Xiaofeng, deputy director of the Beijing Centers for Disease Control and Prevention, gave advice-for central air conditioners, the most important thing is to maintain fresh air operation. , And close the return air system. Some air conditioners come with air purification and disinfection devices. This kind of air conditioning system must be operated in strict accordance with the product instructions.
Compared with central air conditioners, is there any risk to household air conditioners? In Liu Xiaofeng's view, the most common air conditioner in daily life is a split air conditioner, that is, one room and one machine. When this type of air conditioner is used, the air circulates in a separate room through the air conditioner, and there is no cross-contamination of each room, so it is basically safe.
Home air conditioners are relatively safe, which makes many people breathe a sigh of relief. "However, it is worth noting that household air conditioners are often used only in the summer. Long-term inactivity has caused a large number of bacteria to grow inside the air conditioner. Therefore, regardless of whether the epidemic situation is considered, the filter and movement should be checked before reusing the air conditioner. Cleaning and disinfection." Zhao Hongbo, deputy chief physician of the Chinese Medicine Rehabilitation Center of Beijing Rehabilitation Hospital, Capital Medical University, told reporters.
The correct way to start the air conditioner for the first time
1. Disconnect the power supply of the air conditioner, unplug the plug, and open the windows to keep indoor air circulating;
2. Open the air conditioner panel, remove the air conditioner filter and air purification filter (some air conditioners have, refer to the air conditioner manual) to expose the heat sink; at the same time, clean the filter.
3. Shake the cleaning agent thoroughly, and spray the entire heat sink in the order of up and down at about 125px of the discrete heat;
4. Approximately 15 minutes after spraying, install the air-conditioning filter and turn on the air-conditioning refrigeration program to run for 15-30 minutes. The sewage on the heat sink will be actively discharged with the drain pipe.
Never use alcohol to clean and disinfect
Of course, the air conditioner was born to make people live more comfortably. How to use air-conditioning scientifically to minimize its harm to human health?
Zhao Hongbo suggested that the temperature of household air conditioners should not be too low. Considering that the human body should be able to adapt to the temperature difference between indoor and outdoor more easily, it is generally recommended that the set temperature of the air conditioner should not be lower than 26°C. Those who stay in the air-conditioned room for a long time due to work or other reasons should ensure that they have a certain amount of outdoor activity time every day. It is hot in summer. After sweating during activities, you should add water, sodium, potassium and other elements in time. You can drink light salt water or fruits such as bananas and oranges to maintain electrolyte balance and intake of essential life elements.
There are also experts’ suggestions that don’t let the cold wind from the vents blow directly on your body. It is best not to blow cold wind directly when you are sweating. Pay attention to the warmth of the cervical spine and knee joints. If local discomfort occurs, apply heat to the cold part to reduce the symptoms of discomfort.
"We should also pay attention to regular disinfection and cleaning of air conditioners, especially in special times." Zhao Hongbo said that if you don't want to find "air conditioners", the most important thing is to use less air conditioners, and set air conditioner parameters and cleaning and disinfection reasonably.
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Experts especially emphasized that do not use alcohol to clean the inside of the air conditioner in summer. Medical alcohol can disinfect and sterilize, but it evaporates quickly. Cleaning the air conditioner with alcohol will easily form flammable and explosive gas due to poor air circulation inside the air conditioner, posing safety risks.
