Several scientific researchers retreated aside, looked at Li Qingming respectfully, and waited for his guidance.

Regarding range hoods, Li Qingming naturally has them at home. This is a must-have for Chinese restaurants and Chinese families. Without this thing, you will wait for thick smoke to roll in your home and you will see nothing.

As for this range hood, there was a rumor that was not a rumor at first. It was said that the range hood was not easy to use without the exhaust fan. This exhaust fan was originally used by every household.

In ancient China, there were naturally no exhaust fans, so every household had a chimney that allowed the smoke to be discharged outdoors. Of course, this is also called smoke. In the ancient times, if you saw smoke rising one by one, it would mean that even if you didn’t have enough food and clothing, you would have no worries about food and clothing. This is a good thing. Of course, in the West, you can’t experience this kind of scene of smoke rising. Because everyone’s cooking methods are different, you can’t see smoke.

In modern times, the houses in the past have become apartment buildings, so naturally there is no such chimney. But every household must cook. The cooking will form smoke from cooking. Therefore, in that not wealthy era, everyone cooked outside and cooked in the corridor.

In that era, apartment buildings were filled with corridors, not only for people to leave, but also for cooking for each store. However, due to the narrow corridors, the smoke was rolling. Once the fire was burned, the entire building seemed to have caught fire.

In addition, if we want to cook, we must have firewood or coal, so this is really easy to cause fire. However, in that era, there was no way. With the advancement of material civilization, everyone gradually became rich.

Of course, it is mainly due to the vigorous promotion of real estate developers. Every household lives in a modern commercial residential building with two families in the corridor. In this case, it is naturally even more impossible to come out to cook. The high-rise buildings in the entire building can no longer live.

Therefore, a smart person invented a small kitchen. The so-called small kitchen is an extra piece in the kitchen. This protruding piece is the stove, with various electronic ignition stoves placed on it.

Then, on both sides, there are two exhaust fans. That is, fan leaves like electric fans. When cooking, the exhaust fan is turned on and the thick smoke generated is pumped out. Is that effective?

As for Li Qingming, the effect is really average. It can be discharged for most of the time, but there is still a small part of it, and it will still float to the house. But there is no way, the exhaust fan can only be like this. Moreover, at this time, gas or liquefied gas is used, so it is naturally impossible to go outside to cook with firewood.

Everyone can only endure it.

Later, with the unremitting efforts of real estate developers, they continued to launch various more modern properties, so the exhaust fans were too indifferent, and the kitchen was not elegant either. They were all protruding, and the outside looked really not good-looking.

So, someone has developed a range hood.

When this range hood first came out, it was slandered. It is said that its effect is not as good as that of the exhaust fan. The exhaust fan has strong wind power and can remove the fume. The range hood is not good. After installing it, there are still various fume stains at home.

Many people believed in this statement at the beginning. In addition, the price of range hoods at that time was indeed far better than exhaust fans. Therefore, everyone follows the crowd and says that range hoods are not good and are not good at exhaust fans.

Including Li Qingming's home, he thought so before. But when your room type is no longer suitable for installing an exhaust fan, you can only choose a range hood. Once installed, you only found that the effect of this range hood is far better than that of an exhaust fan.

This exhaust fan itself cannot smoke all the oil smoke. Even if a kitchen is installed, the whole room is filled with oil smoke. When cooking, the kitchen door must be closed. At the same time, the entire kitchen will have various oil stains over time. It is as difficult as it can be wiped.

After installing the range hood, the range hood can basically be removed. And all the oil stains will be removed only in the range hood and will not go to other places. As long as you clean them regularly, you can get rid of them.

Therefore, many rumors are driven by the interests behind them.

As the saying goes, the world is bustling for profit, and the world is bustling for profit. No one will do anything without profit. No rumors or rumors come out and are driven by interests.

The topic is about this range hood. Whether this range hood is good or not is actually very simple. There are two hard standards for the range hood: First, the air volume is large, which can ensure that all the fume can be taken away; second, it is convenient and convenient to cook.

Li Qingming stood in front of him, looked at him carefully, brought a pot, and then tried to make a simulated stir-fry.

"Open!" Li Qingming said briefly.

Once again, the range hood turned on and inhale.

Li Qingming felt it for a moment, nodded, and signaled that he could turn it off.

"Mr. Li, are there any areas that need improvement?" everyone asked.

Li Qingming pondered for a moment.

"I will talk about the first point first, that is, the intake volume must be large, so that the oil smoke will be smoked away. Otherwise, the oil smoke from Chinese cuisine will be very scary and the entire federal government will not be able to stand it." Li Qingming said.

Everyone nodded and recorded it.

"So, increase the amount of air pumping, and then ensure that it is quiet as much as possible. This ensures that the person who cooks is not disturbed by the noise. Although this is a trivial matter, it is crucial for everyone's cooking experience. In this regard, I can only give my opinions on how to solve it, it is your problem!" Li Qingming said.

Silence! This is also something that the range hood must pay attention to. Otherwise, no matter how large the air intake is and there is no gas smoke, it will not work if it is too annoying. This is definitely not possible.

Everyone nodded. It was a bit too annoying just now. Everyone didn't pay attention to this. After all, I think it would be a little bit like turning on the fried rice for a short while, so the impact would not be too great.

But now when Li Qingming said this, he suddenly realized that if you are too noisy, you will not want to open it after buying it. Because it is too noisy, people have a limit to the tolerance of noise. If you are too noisy, no one can stand it.

But if you don’t buy it, then there will naturally be no one who buys it if your reputation continues. Because it is useless to buy it. Not only that, this also affects the popularity of the entire Chinese cuisine. This involves a wide range of things.

"Secondly, that is about the setting of the flue. In this regard, you must set the flue according to the current room types of the apartment buildings in the federal apartment buildings." Li Qingming said.

In China, all buildings have flue settings, so the kitchen is fixed. However, the Federation does not, because without the emergence of Chinese cuisine, there will naturally be no flue settings. This is impossible.

Only Chinese cuisine can bring smoke to the cooking stove.

"We understand, thank you for your advice!" Several scientific researchers thanked and thanked him.

Li Qingming paused, but in the end he didn't say much.

"Do you have anything else to say? If so, just say it. They are all personnel who focus on scientific research. As long as it is related to design and development, you can just say it clearly!" Qin Heluo saw that Li Qingming seemed to have not said enough.

Li Qingming thought about it.

"This aspect is not really critical. However, it is also directly related to the experience of every cooker." Li Qingming considered, "but it may lead to intensification of costs!"

"Cost is not what you need to consider, nor is it what they need to consider. This is what the marketing department needs to consider!" Qin Heluo said domineeringly, "What you have to do is give the best suggestions and make the best products! As for the rest, that is what the marketing department needs to consider!"

Scientific research is scientific research! It does not consider the cost. As for whether the cost is too high after the research is released, it will affect the market. That is, after the marketing department conducts research, it will give suggestions. Then the production department will weigh the trade-offs, and finally come up with a new plan after consultation by various departments.

But before this, the scientific research department only tested scientific research, just scientific research.

"What I want to say is that the height of each person who cooks is different, but the close air distance with the best air intake is fixed, about 50 cm." Li Qingming said this and said nothing.

The others also understood.

This is easy to understand. For example, people with a height of 150 cm and people with a height of 190 cm cook, the height of the stove will naturally be different for them. So, how to balance in this case.

How to solve it?

"Do you have any suggestions?" Qin Heluo asked.

Regarding this issue, it actually exists in China. However, in most cases, people are self-regulating. After all, the stove is fixed and the range hood is fixed. The only thing that can be changed is that people can find ways to adapt. Of course, in most cases, the intermediate value is used. That is, people who are about 170 are the most suitable for cooking. Therefore, the height of the stove is generally 70 cm high.

It’s more uncomfortable to be shorter, and it’s also uncomfortable to be taller. But there’s no way, you have to consider most people.

The only change is that they were originally straight-through range hoods, but they turned into side-sucking because they would not touch the heads of tall people. However, this feeling is still not very good.

The taller you are, the more uncomfortable you feel. But Li Qingming didn't know how to solve it.

After all, no one is thinking about solving it.

It has always been so monotonous, the stove is 70 cm high. The optimal air intake distance of the range hood is 50 cm, which is all fixed formula. So can the federal government solve it? Of course, it is not impossible, but once it is adjusted, the cost in the middle will be too high.

So, Li Qingming was helpless. He didn't say it just now.
Chapter completed!