The rice cooker and air fryer are not easy to use on the plateau, Jiang Yan is quite clear, and he also knows where things are going, but Jiang Yan did not take this problem into account when he designed it before.

At high altitudes, because the boiling point of water becomes very low, the water temperature cannot rise, so the rice is difficult to cook, and the control of the heating of the rice cooker is mainly through the control of the heating temperature and heating time of the inner tank, and the sensors of the relevant heating state are carried out for the inner tank. For the upper steamer, the heating is indirectly controlled by the heating of the inner tank. Therefore, in the case that the rice cooker itself does not have a corresponding preset heating method, it is troublesome to master the proper way to steam rice, and the influence of atmospheric pressure on it is also quite large.

Later generations also adopted the method of high-voltage rice cooker, which solved this problem by increasing the pressure.

After all, the higher the altitude, the lower the atmospheric pressure.

As for the air fryer, it is relatively better, although the atmospheric pressure has a certain effect, but the impact is not large, but compared to the low altitude, you only need to adjust the time a little longer.

Jiang Yan can't do a rice cooker with high pressure, it's not a difficult thing to complete it according to the current technology, and it can be done in minutes by drawing a picture, but Jiang Yan feels that on the plateau, the function of this rice cooker is too single, not very easy to make, and it is better to use a pressure cooker.

A pressure cooker, also known as a pressure cooker, is a physical phenomenon in which the boiling point of a liquid at a higher air pressure is raised, so that water can reach a higher temperature without boiling, so as to speed up the efficiency of cooking food.

The pressure cooker, also known as the "Papin pan", was invented by a French doctor named Denis Papin. Papin is not only a doctor, but also a physicist and mechanical engineer. Solid knowledge of physics and mechanical theory is a reliable basis for his invention of the pressure cooker.

The principle of a pressure cooker is simple because the boiling point of water is affected by the air pressure, and the higher the air pressure, the higher the boiling point. In the mountains and plateaus, the air pressure is less than 1 atmosphere, and the boiling point of water is less than 100 °C, so water can boil less than 100 °C, and eggs cannot be boiled in ordinary pots. When the air pressure is greater than 1 atmosphere, the water will not boil until the temperature is above 100°C.

The pressure cooker that people commonly use is designed using this principle. The pressure cooker seals the water quite tightly, and the water vapor produced by the evaporation of the water cannot be diffused into the air, but can only be retained in the pressure cooker, so that the air pressure inside the pressure cooker is higher than 1 atmosphere, and the water is boiled only when it is higher than 100 °C, so that the pressure cooker forms a high-temperature and high-pressure environment inside, and the rice is easy to cook quickly, and it is quite crispy. Of course, the pressure inside the pressure cooker will not be unlimited, or it will explode.

A pressure cooker consists of a body, a lid, a fusible sheet, a vent, a safety valve and a sealing ring, and other new forms of venting channels.

The fusible sheet is installed to act as a backup safety in case the safety valve fails, and it is made of aluminum alloy material with a low melting point. Once the safety valve fails, the pressure in the pot is too large, and the temperature also rises, when the temperature reaches the melting point of the fusible sheet, continue to heat the soluble sheet and begin to melt, and the gas in the pot will be sprayed out from the fusible sheet, so that the pressure in the pot is reduced, so as to prevent the occurrence of explosion accidents.

In terms of energy, there are two kinds of ordinary energy pressure cookers and electric pressure cookers, so in terms of the current environment, choosing ordinary energy pressure cookers is the most suitable and easiest thing to manufacture.

In terms of raw materials: it is generally divided into two types: aluminum alloy and stainless steel.

Ordinary aluminum alloy pressure cooker is light in weight, fast in heat transfer, cheap in price, has an alumina layer on the surface to prevent corrosion (avoid damage), can be quickly cooled with cold water, and its service life is calculated according to 1 hour of use per day, and its service life is 8 years, which is not suitable for induction cooker.

The stainless steel composite bottom aluminum alloy pressure cooker is as suitable for induction cooker as the stainless steel pressure cooker, and at the same time has the advantages of ordinary aluminum alloy pressure cooker.

Stainless steel pressure cooker is expensive: heat-resistant, beautiful, not easy to react with acid, alkali and salt in food, and the service life of one hour a day is about 10 years. It is suitable for induction cooker, easy to change color on gas stove and electric stove, and cannot be quickly cooled with cold water, and is not suitable for torturing traditional Chinese medicine.

Don't think about alloys, other uses are not enough, not to mention the production of pressure cookers, so you can only choose to use stainless steel, fortunately, the country's stainless steel production has been increasing.

After figuring out the matter of the pressure cooker, Jiang Yan suddenly thought that the first pressure cooker in China was the "Double Happiness" brand, they independently developed China's first pressure cooker in 1964, developed China's first electric pressure cooker in 1990, and the first 100 million pressure cooker rolled off the assembly line in 2008, and is the only enterprise in the world that produces and sells pressure cookers to exceed 100 million. For quite some time, most families were proud to have a Double Happiness pressure cooker.

Therefore, whether this thing is sold for export or domestic sales, it is quite marketable.

It seems that there was a pressure cooker of such a brand at home before, but the name "Double Happiness" is very good, and if you can't use this name, you can name it yourself, and you can be regarded as retaining this brand, but the manufacturers who invented it before can't think about it, who called it invented earlier than them. Thinking of this, Jiang Yan laughed obscenely.

Seeing Jiang Yan's smile like this, Representative Wu was taken aback. I have to say that Jiang Yan's smile is too weird, he can only think about the bad side.

But he still couldn't help but speak: "Mr. Jiang, Mr. Jiang." ”

"Oh! I'm sorry, I was distracted just now, don't worry, I will deal with these problems, and definitely let our plateau warriors use good things. ”

"That's good, that's good, I know that Jiang will always have a corresponding solution, then I'll wait for your good news."

Wu represents this untraceable sycophant, Jiang Yan is quite useful, to be honest, Jiang Yan can hear that he is a sycophant, but this sycophant still depends on people, after all, people are different.

"Then Mr. Jiang, I won't bother you here, you are busy first, busy first." Representative Wu left Jiang Yan's office after a confession, Jiang Yan found that it seemed that Representative Wu left relatively quickly, which made Jiang Yan puzzled, but he didn't care about it at the moment.

After Deputy Wu left, Jiang Yan glanced at the materials he had brought over, then put them aside, lit a cigarette and stood in front of the window.

To be honest, this air fryer also has a rice cooker, as long as these two projects are operated well, in addition to the air fryer, this rice cooker can almost support a factory for 30 years or even longer, which has been proved by later generations, and now they make this pressure cooker, this third product is not suitable for put together, and the output of this thing in later generations is quite huge.

However, if you want to produce such a product, this person is an indispensable factor, I heard Director Wang say before, and the newly established factory personnel of the rolling mill are set at 3,000 people, the rolling mill supports 1,000 skilled workers, and the rest are recruited from the society, but with this pressure cooker project, it is estimated that these 3,000 people may not be enough.

This is really a little worried, thinking of this, Jiang Yan couldn't help but sigh, others are worried about the production of products, and they are also worried about having more products.

The next moment, Jiang Yan thought that he seemed to have entered a misunderstanding, why did he think about it like this, it would be over if he outsourced the parts of the product, he only mastered his own core and assembly, thinking of this, Jiang Yan put his mind at ease.

But now my primary goal is to get the blueprints of this pressure cooker out first.

(End of chapter)

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