Super Weapon Swap System

"After it becomes DC, we send it directly to the main circuit of the power module behind. Under the control of microcomputer, the DC power supply with variable output voltage is directly sent to the compressor to drive the DC motor."

This block diagram is not difficult. It's just a matter of a few times. As long as Qin Guan stays here a little longer and waits until the marker is dry, he will never erase it.

The structure of AC motor is very simple and the cost is low. However, the advanced one is DC motor. The principle of DC motor is that the rotating magnetic field generated by the stator acts directly with the permanent magnetic field of the rotor to realize the operation of the compressor.

Its rotor is made of rare earth permanent magnet materials.

What did Qin Guan think of when he thought of this? In the history of parallel time and space, the country's rare earth materials have always been sold at a low price at the price of cabbage. Now that he has come here, he must change this state. Rare earth materials are valuable strategic resources, just like oil and nuclear raw materials, Never let those greedy businessmen sell at a low price.

Rare earth materials are essential raw materials for manufacturing motors. All DC motors in future generations, whether lightweight electric bicycles or expensive Tesla sports cars, are inseparable from rare earth materials.

Without this material, super strong permanent magnets cannot be manufactured. At the same time, rare earths are indispensable in the fields of active phased array radar and advanced aeroengine high-temperature blades.

I'm really a nanny. I need to take care of everything, but I must take care of it. Since I came to this era, I want to change the history of the motherland in this era, so that the motherland can become stronger earlier, so that the motherland will no longer be bullied by foreign countries!

"Well, that's the block diagram. This DC variable frequency air conditioner can also be called a full DC variable speed air conditioner. Its biggest feature is that it saves a link from DC to AC, which can save more power." Qin Guan said: "It can also save at least 20% of power. At the same time, DC frequency conversion is better than AC frequency conversion in terms of comfort, silence, service life and control accuracy."

This is obvious. The DC variable frequency compressor does not have the electromagnetic induction effect of the stator rotating magnetic field on the rotor. The control board overcomes the electromagnetic noise and rotor loss of the AC variable frequency compressor. In these aspects, it must have high efficiency and low noise.

"The disadvantage is that the cost of DC variable frequency air conditioning is higher than that of AC variable frequency air conditioning."

After Qin Guan finished speaking, the islanders present were stunned. They thought they were air conditioning experts, but now, it seems that Qin Guan's story is quite reasonable. Yes, if this scheme is adopted, it is indeed better than his own frequency conversion scheme, but it sounds a little mysterious.

Advanced DC motor? And direct microcomputer control. Do they have this technology?

"President Qin, are you talking about a mature plan?" finally, Koizumi couldn't help asking.

Qin Guan nodded: "yes, it's mature."

Mature schemes, of course, are all in the cemetery system.

Air conditioners generally give the impression that they are civilian. In fact, the military also has a high demand for air conditioners. It is absolutely impossible to export weapon systems to desert countries without qualified air conditioners.

For example, the famous Changhong factory in later generations was originally a military factory. Of course, their air conditioning technology can also be supplied to the military, so it can be found from the cemetery.

Civil air conditioners can be supplied to the military. Of course, there are also air conditioners specially developed for the military. You know, the technical indicators of air conditioners needed by the military are much higher than those for civil use.

Military air conditioning equipment can heat and cool normally within the temperature range of - 45 ℃ to 55 ℃; can withstand vibration with frequency of 5 to 200 Hz and acceleration value of 2.5G; can work normally at an altitude of 4500m; can resist sand dust, salt fog, mold, sun exposure, rainstorm, high humidity environment, etc. Moreover, the military also requires that lifelong free services must be provided within the design life of 10 to 12 years.

Even the famous Miss Dong of later generations rarely undertook such orders. The demand was small and the requirements were high. Only a few professional manufacturers would produce them. For example, in China, there was a special Swan refrigeration company. As early as 1974, it developed the first domestic air conditioner in China; later, they developed a military shelter air conditioner, including Hongqi 2B mobile medium and high altitude On various military vehicles, including medium and short-range surface to air missile control vehicles.

A few years ago, domestic tanks were able to successfully open the market of date palm country, and the company's air conditioner was also instrumental.

Therefore, there are examples for Qin Guan to say so now. We have advanced air conditioning technology!

Qin Guan's argument was justified. The technical experts of Lingsan heavy industry all pondered: "in this case, we need high-power thyristors."

There must be various professional devices in the DC direct control circuit, especially in order to play the current role, there must be high-power thyristors. This device is not even available in Daoguo now. If there are any, they will do it directly. Qin Guan didn't speak, but showed an unfathomable smile. You didn't, it doesn't mean we didn't, i You know how advanced you are.

Qin Guan's smile finally discouraged the other party. He didn't even dare to raise the problem of DC motor. Maybe the Han country really has first-class technology, which has been developed by others.

So, what happens next?

"Can we introduce your technology?" Koizumi suddenly asked.

The island country is good at learning, which also impressed Qin Guan. In fact, various technologies were not invented by the island country, but developed and expanded by the island country.

For example, liquid crystal technology came out of eagle's laboratory. However, after learning, the islanders came to the island and soon invented a calculator and successfully used the liquid crystal technology.

They are not afraid of the gap. With the gap, they face the gap and will soon catch up.

Now, it is said that the Han state has a leading generation of technology. Of course, they want to introduce it. Through the introduction, they can quickly realize domestic production, and then they can develop better performance. This is the way that the islanders go.

Qin Guan's face was still smiling: "well, we'll talk about it later."

As a patriot, Qin Guan doesn't really want to do any business with the islanders. He just wants to pit them. There are so many partners to choose from. Why choose the islanders?

Qin Guan is such a narrow concept, which cannot be changed.