Chapter 1343: Who is the emperor of technology

You think I don't understand anything, but I came from later generations. Of course, I know the terminology in the field of air conditioning. In later generations, the air conditioner is almost a must-have household item. Now, Han is just beginning to develop. When the summer is hot, sit under the shade of a tree, then pick up the fan and shake it hard, calm and cool naturally.
Not only the air conditioner, but the refrigerator is not used. Hang the watermelon in the well. After a few hours, lift it up, cut it open, and eat it.
Therefore, no one cares about the air conditioner. What are you afraid of when it is hot? Can it be called summer if it is not hot? Xia Lianfu, that's an old saying.
However, in many places, air-conditioning is still needed. For example, in some large computer rooms, the computers in them are constantly running, and they will crash if overheated. Therefore, they must be cooled. Another example is tanks exported to desert countries. , Also need to install air conditioning, otherwise in summer, it will be too hot inside.
Speaking of the advanced technology in the air-conditioning field, the current Ryosan Heavy Industry is quite powerful. In the history of parallel time and space, Ryosan Heavy Industry first appeared in the Han country as a benchmark in the air-conditioning industry.
The technology of the island country is cattle.
Now, for Qin Guan, developing the country requires all walks of life. If advanced air-conditioning technology can be introduced into the country, that would be good. However, if the other party is so arrogant and thinks their own technology The most advanced, then Qin Guan is not happy, especially in front of these people.
Our Han country's technology is the best, and we must instill such a point of view into the world.
When Qin Guan talked about frequency conversion, the experts from the air-conditioning factory who were present were all taken aback. They didn't expect that Qin Guan would have such questions. Is it true that Qin Guan is omniscient and omniscience? Can't it?
With a smile on Qin Guan's face, he looked at everyone.
Today's air conditioners are all fixed frequency, or fixed speed. Simply put, the cooling of an air conditioner is a certain power. If you want to turn it on, you can turn it on all at once to provide cooling capacity, or you can turn it off.
For example, if the room has to be kept at 18 degrees and the outside temperature is 30 degrees, close the windows and the air conditioner will start to cool down. The temperature will continue to drop until it reaches 18 degrees, and the air conditioner will stop working.
After the air conditioner is stopped, the temperature in the room will continue to rise and rise again. When it rises to 20 degrees, the air conditioner continues to turn on, cools down to 18 degrees, turns off, and so on, so use this type of air conditioner It is constantly starting and shutting down.
What's the disadvantage of this? The first is that people feel uncomfortable, keep turning off and on, the temperature in the room is floating, not a specific value, it will be cold for a while and hot for a while.
Secondly, when the air conditioner is turned on, it will have an impact on the power grid. If you put the plug of the computer and the plug of the air conditioner directly on the same socket, you can find that when the air conditioner is turned on, the computer will restart immediately, because The power grid fluctuates too much.
Therefore, in later generations, inverter air conditioners gradually emerged.
Frequency conversion, first explain who is changing, then you must know why the previous air conditioners cannot be changed. This change is that the motor, the motor drives the compressor, provides the pressure of the pipeline, and allows the refrigerant to be taken away through the cyclic process of evaporation and liquefaction Heat.
The power of this motor is constant, that is fixed frequency, if this motor can change the speed and power, this is frequency conversion. The two comparisons, of course, is that the benefits of frequency conversion are more. It adjusts the load by changing the power supply frequency to reduce power consumption, reduce losses, and extend the service life of the equipment. At the same time, the user is more comfortable.
This technology is the technology that these people are currently studying. Of course, they have not yet achieved a technological breakthrough. It was already in 1988 that the real inverter air conditioners appeared on the island market.
Now, when Qin Guan asks, Koizumi on the side can’t help but say:
Mr. Qin, I didn’t expect you to know so much. That’s right, our air conditioners don’t have frequency conversion capabilities. However, we are conducting research in this area to integrate The frequency converter is introduced into our air conditioning control system, so that it has frequency conversion capability."
To say that he does not have this R&D capability, Koizumi will never say that, but he has not succeeded in R&D. The principle of this frequency conversion is also very simple. It changes the frequency of the power supply through the frequency converter, thereby changing the speed of the compressor. Specifically, it is two conversions. First, the AC-to-DC conversion is performed through the inverter, and then the DC-to-AC conversion is performed through the inverter. This conversion turns the constant AC power into an AC power with a changing frequency. , So as to control the speed of the AC motor. Qin nodded his point of view: "You can adopt such a technology, it is already good, it is within the scope of your technology.
Listening to Qin Guan's words, he was like standing on the top of a high mountain and looking down at the crowd. The technicians of the island country on the side could not help but feel a little dissatisfied.
"Mr Qin, listening to you, there are still unsatisfactory aspects of our technology?" Koizumi asked with a smile. As a senior manager, he must control his emotions.
"Of course, this technology is not the most advanced." Qin Guan said: "Your technology can be called AC frequency, or it is so-so. The more advanced technology is DC frequency conversion."
Hearing Qin Guan's words, someone immediately said, "I have never heard of it. DC has frequency?"
Alternating current, the current changes, the number of changes in one second is the frequency, but direct current, the current is constant, where does the frequency come from, and where does the frequency conversion come from?
This is simply the words of a layman.
Qin Guan smiled and said, "Yes, my abbreviation is misunderstood. DC frequency conversion is separate. DC refers to the use of a DC motor and frequency conversion. It refers to the adjustable speed of the motor, not that DC has frequency. "
As a former science student, Qin Guan couldn’t help this most basic problem. The technology of air conditioner has developed from fixed frequency to frequency conversion. In the battle of frequency conversion route, DC frequency conversion has defeated AC frequency conversion. , With the continuous advancement of technology, Qin Guan's route is clear.
Regardless of the frequency conversion, the energy consumption ratio is also different, it depends on whose technology is more advanced.
After Qin Guan finished speaking, he saw a technician next to him holding a marker, so he reached out and took it, and began to draw a block diagram on the other's clean and tidy ground.
"If you want to change the control circuit, you need to first convert the alternating current to direct current. This is the first step of inversion. However, the two frequency conversion technologies are different next." Qin Guan said, drew a beautiful square The frame is exactly the width of a floor tile. This is a marker. As long as you write it, it won't be wiped off.