The editor is very thoughtful
At present, all aspects of our lives, such as food, clothing, housing and transportation, have been seriously affected. Fighting the epidemic has also become a matter for everyone and every industry. Now the national epidemic situation has declined, and most domestic enterprises have gradually started to return to work. The peak traffic in the morning and evening is also increasing, but the spread of the virus has not stopped. Therefore, how to do a good job in virus protection during epidemic travel has become a topic that many people are most concerned about. Faced with the high crowd density of public transportation, more people choose to travel by car to reduce contact with the crowd.
In view of the current travel situation, various car companies have also begun to develop a vehicle-mounted purification system with virus prevention function, so that cars can "wear" N95 masks, aiming at building an all-round healthy car.
Geely automobile: the first all-round healthy car, easy to understand and replace the air filter.
First of all, Geely's official definition of "all-round health car" is that it will be different from professional medical protection cars and is a consumer-grade product mainly for ordinary consumers. It not only includes the functions of Geely automobile products to isolate harmful substances from the outside air and purify the air inside the car quickly and efficiently, but also breaks through the virus prevention function and technology in the car, effectively inhibiting and reducing the harm of the virus to the human body.
"The research and development of' all-round health car' is a brand-new field, involving ecological materials and environmental protection certification, air quality management, health and life care." Hu Zhengnan, president of Geely Automobile Research Institute, said: "Facing the challenge, Geely Automobile is developing a series of innovative technologies for all-round healthy automobile projects by taking advantage of the global system and resources. For example, in view of the safety problem of the interior space caused by the COVID-19 epidemic, antibacterial substances are actively added to all high-environmental-friendly materials in the car to improve the surface sterilization ability and break through the virus prevention function and technology in the car. "
It is worth mentioning that the official said that the research and development will be completed within 20 days and reach the mass production standard. However, how this function finally landed on the model is still unknown. After all, many 4S stores have not yet opened.
GAC Aian: N95 air filter+high temperature anti-virus, so that the virus has no way to escape.
On February 12, GAC New Energy officially announced the success of the research and development of "Anti-virus Health Technology" and opened an appointment for related upgrade services. Like Geely, GAC New Energy also uses HEPA-class air conditioning filter elements, which can effectively isolate it? What can PM0.3 (particles with a diameter of 0.3 micron) achieve? N95？ The protection standard is above the first level. Different from Geely, GAC is also equipped with a remote one-button antivirus function on the Ai 'an model.
Tucki G3: High-temperature bacteriostasis, in-car furnace.
Of course, when turning on this function, please make sure that there is no living body in the car, and in the official operation manual, Xpeng Motors reminds you that after high-temperature disinfection, the car needs to stand for more than 30 minutes before getting on the bus.
Changan CS75PLUS: Mobile temperature measuring gun, where to drive and where to measure?
According to the Chief Travel Officer, this "non-contact" temperature measurement can not fundamentally kill the virus, but it can effectively avoid cross-infection, directly block the contact and potential danger between the occupants in the car, and is also an effective means of protection.
To sum up, in order to develop cars with anti-virus function, car companies adopt the following technologies: replacing HEPA-class filter elements and reducing virus activity by using high temperature.
So, are the "anti-virus" measures of car companies really effective?
The Chief Travel Officer mentioned in the article "Preventing novel coronavirus: Tesla's" Biochemical Model "is no better than a mask" that the so-called HEPA filter can filter air with a diameter of 0.3? The filtration effect of m particles reaches 99.97%, and the diameter of ordinary PM2.5 is less than 2.5? M) sufficient for filtration. At the same time, it can also resist other bacteria, pollen and dust in most air.
However, viruses are much smaller than bacteria. According to the "Guidelines for Public Protection against Pneumonia Infected in novel coronavirus" compiled by China Center for Disease Control and Prevention, novel coronavirus belongs to β novel coronavirus with capsule, round or oval particles, which are often polymorphic, with a diameter of 60 ~140 nm (1nm = 0.001? m； Nm: nanometer,? M: micron). This also means that the virus is more difficult to separate from the air, and HEPA filter can not achieve effective filtering effect on novel coronavirus itself.
Of course, this does not mean that the research of car companies is completely useless. Since the known modes of novel coronavirus propagation are mainly droplet propagation and contact propagation, HEPA filter is a kind of novel coronavirus, which can filter and attach to droplets with a diameter usually greater than 0.74 micron.
Therefore, replacing HEPA filter core can still play a role in filtering viruses to a certain extent. However, the Chief Travel Officer thinks that in order to truly realize the function of "antivirus", the high-temperature function introduced by GAC and Tucki may be more practical. In addition, novel coronavirus is sensitive to heat sources, and fat solvents such as ultraviolet rays, ether, 75% ethanol, chlorine-containing disinfectants, peracetic acid and chloroform can effectively inactivate the virus.
Therefore, the chief travel officer suggested that if you want to completely ensure the safety of the space inside the car, you should try your best to treat the car by effectively inactivating the virus as mentioned above. As for the various initiatives of the above-mentioned car companies, they can only play the role of "icing on the cake".
This article comes from car home, the author of the car manufacturer, and does not represent car home's position.