Facing the question of Mr. Lei Jun, chairman of Xiaomi Technology, Han Lingyang nodded affirmatively and said at the same time. Pen "Fun" Pavilion www.biquge.info

"Mr. Lei is right, our "urban air purification system" is to install a lot of air purifiers in the city. ”

As soon as Han Lingyang's words came out, the audience was silent, and then a second later, there was an uproar.

The people at the scene were in an uproar, and it was already exploding on the Internet.

Although there were only a few thousand people on the scene, there were at least a few million people watching the live broadcast on the Internet and in front of the TV, not to mention tens of millions, at least a few million.

When millions of netizens heard Han Lingyang say that the "urban air purification system" is to install countless air purifiers in the city, they couldn't help but complain.

[IMHO, I can also think of installing an air purifier, and I think I should also install a super big fan to blow the haze away, can I also be called a tech genius?] 】

On a certain technology forum, a netizen began to post complaints, and even hacked Han Lingyang.

[I'll tell you a joke, installing an air purifier in the city can effectively solve the smog. 】

On Weibo, some people began to use this to hype up hot topics.

[A wave of strength analysis, that Han Lingyang graduated from the Massachusetts Institute of Technology, but the math was taught by a physical education teacher, right? ] Assuming that air purifiers can indeed purify the air, it would be impossible for a city to install air purifiers to clean up smog weather. First of all, taking twice the purification capacity of carbon fiber air purifiers with twice the best filters on the market today, for example, how many air purifiers does a city need to install to purify smog? 100,000? Or a million? Ten million? So the question is, isn't the cost of such a huge amount an astronomical amount? And I can't compliment you on the actual results. 】

In a technology discussion group, a professional administrator analyzed a wave of strength and came to the conclusion that it is basically impossible to install air purifiers in cities to purify smog, or the effect is not ideal.

[Post a post and visually inspect the government and say: This is a good idea, but we don't have the money.] 】

[If you do this, a billion dollars of dollars will not be enough to make, let alone whether the effect is good or not. 】

[Geniuses can also say this kind of thing, I'm really convinced, are all domestic geniuses like this? ] Fight with the bricks! 】

On the Internet, because Han Lingyang said at the Science and Technology Expo that the "urban air purification system" is the installation of air purifiers in the city, it has begun to ferment at an alarming speed, and some media even published articles to report it for the first time.

Han Lingyang didn't expect that his answer would cause a lot of fluctuations on the Internet.

After listening to Han Lingyang's answer, Mr. Lei Jun, the chairman of Xiaomi Technology, only smiled faintly and didn't ask anything more.

In Lei Jun's opinion, this Han Lingyang is mostly in vain, and he can only talk on paper.

After answering Mr. Lei Jun's question, Han Lingyang spoke for almost a minute off topic, some praising Xiaomi technology and some humorous sentences.

But soon, Han Lingyang returned to the topic.

"If you think it's just an infinite number of air purifiers in the city, you're very wrong."

In the Bluetooth headset worn by Han Lingyang, Fang Zicheng had already told Han Lingyang about the situation on the Internet just now, so Han Lingyang improvised and began to reverse the plot with one sentence!

"How much air can be purified by an average air purifier?"

Han Lingyang continued.

At first, Han Lingyang didn't expect that the model of the "urban air purification system" would cause such big fluctuations on the Internet, so Han Lingyang accelerated the speed of his speech, and tried to hand over the camera to Su Shiyun outside the Science and Technology Museum as soon as possible, so that the on-site experimental effect of the product could convince everyone!

"Most of the purification technologies used in domestic air purifiers are filters and carbon fiber purification technologies, which may have a certain effect in the home, but they obviously do not play any role in air purification in a city."

As soon as Han Lingyang said this, the people at the scene, including Lei Jun, chairman of Xiaomi Technology, as well as Meizu Technology and Huawei Technology, instantly understood that Han Lingyang was selling Guanzi, and he must have cutting-edge air purification technology.

Lei Jun suddenly felt that the question he had just asked was really a little stupid.

"The most cutting-edge technology of air purification technology is photocatalyst and negative ion technology."

"Photocatalyst, that is, photocatalyst, it does not undergo chemical changes under the action of light, but it can promote chemical reactions, its function is like chlorophyll in photosynthesis, nanoscale titanium dioxide is the most important photocatalyst material, when it absorbs the energy in sunlight or other light sources, the electrons on the surface of the particles are activated, escape from the original orbit, and at the same time the surface generates positively charged holes, the escaped electrons have strong reduction, and the holes have strong oxidation, After reacting with water vapor in the air, the two will generate reactive oxygen species and hydroxide free radicals, and reactive oxygen species and hydroxide free radicals can oxidize and decompose most of the organic matter, pollutants, odors, bacteria, etc. into harmless carbon dioxide and water, so as to achieve the remarkable effect of air purification. ”

"Although the photocatalyst purification technology has significant effects, the material cost of the photocatalyst is too high, so it is not suitable for urban air purifiers."

Han Lingyang briefly introduced the photocatalyst purification technology, but because of the high cost of its materials, he denied the application of this technology in urban air purification.

"Then the core technology of urban air purifiers is naturally eco-grade negative ion purification technology."

Han Lingyang threw out a lot of professional terms at once, which made many laymen feel full of compulsion.

However, like Lei Jun's Xiaomi Technology, there are air purifiers, and the negative ion purification technology is not unfamiliar to him, but most of the air purifiers currently produced by Xiaomi Technology use filters and carbon fiber adsorption technology.

Compared with filter type and carbon fiber adsorption air purifier, negative ion air purifier has very high requirements for both negative ion generation technology and negative ion conversion and release technology.

However, many well-known companies like Xiaomi Technology that have entered the negative ion air purifier across industries often do not have their own core patented technology, and in order to achieve the purpose of rapid profitability with the help of "haze east wind", most of them use traditional bipolar corona discharge devices and unipolar electron injection technology to generate air negative ions.

Because these technologies are relatively backward, the negative ion particle size that can be produced is large, the activity is too poor, and at the same time, it will also produce a higher concentration of ozone derivatives, and there is a big gap with the eco-grade anion products, so the purification effect of the current anion purification technology is very different from the real ecological anion products.

"Eco-grade negative ion purification technology, the core is the "negative ion converter", which integrates negative ion generation and release technology, which is currently the most difficult technology in this field, but in the future technology, this technology has been realized! ”

Han Lingyang said confidently.