Daming Military Empire

Chapter 419 Professionals
The next step is to explain the problem of the motor. This is actually not complicated for people who have learned the basics of electromagnetic induction. Simply put, the motor is the reverse of the generator. Both Xu Fuyuan and Xia Yunyi have made a lot of simple generators. , it should not be very difficult for them to understand the action principle of the motor.

Zhu Cijiong directly said to the two: "Yi Zhong, Fu Zhai, I have told you that when the metal loop moves to cut the magnetic induction line, electricity will be generated in the metal loop, and if the charged metal wire Winding into a coil will generate magnetic force, which is the same as that of a magnet, that is to say, electricity and magnetism can be mutually generated."

Of course they remember this sentence, they have verified it with magnets and wires countless times, and slowly this sentence has been integrated into their minds, and it has become a truth, and they don't need to remember it deliberately.

Therefore, when these two people heard the words, they nodded reflexively. There is no need to explain this, they already understand it.

Immediately afterwards, Zhu Cijiong picked up the pen again, and said while drawing: "If a charged metal wire is wound into a coil, it will generate magnetic force. You have already understood this. You also understand that two magnets with the same pole repel each other and opposite poles attract each other. The energized coils are also regarded as magnets, so will they also repel and attract each other?"

This is for sure. Are they all magnetic? Isn’t it the same as magnets?

In order to speed up the progress, Zhu Cijiong did not explain the Lorentz force and Lenz's law, because explaining the principle of the motor according to the theory involves the magnetic flux vector, and there is no multiplication and division at the moment. Trouble, just draw them the real thing directly, let them make the motor first, and then study the theory later.

He directly drew a simple motor structure diagram on the paper, and then explained: "You think, if there is a magnet in the middle and a coil around it, and the magnetic force generated by the coil is constantly changing direction, will the magnet in the middle rotate? stand up?"

Xu Fuyuan and Xia Yunyi heard the words, looked at the sketch drawn by Zhu Cijiong, and nodded in affirmation.

Zhu Cijiong drew another simple drawing of a three-phase generator, and continued to explain: "To make the magnetic force generated by the coil change direction continuously, a current with continuously changing direction must be emitted when generating electricity. The current generated by this kind of generator is If the size and direction are constantly changing, notice that there are three sets of coils inside. The directions of the three sets of coils are changed in turn in order, so as to ensure that the currents of constantly changing directions are issued, and the currents generated by the three sets of coils are in the Constantly changing, but the overall summing time is the same size, so that the motor can be guaranteed to run stably."

This one is a bit abstract, because electric current and magnetic field are things that cannot be seen, and it is really impossible to fully understand it with just a sketch. Both Xu Fuyuan and Xia Yunyi showed pensive expressions, neither nodding nor shaking their heads.

Zhu Cijiong did not continue to talk, but began to observe the expressions of the two people, and when they both showed expressions of eagerness to try, he knew that the two people had already understood the superficial things, and the next step would be to do more experiments. Gradually understand the conversion relationship between electricity and magnetism.

Now Zhu Cijiong doesn’t have time to do experiments with them slowly, he directly pointed to the sketch of the motor and continued to explain: “If the middle part is to generate a uniform and huge rotational force, it is definitely not possible to use a magnet, you must use a magnetic motor.” I have asked Chang Geng to develop it, and I believe it will be available soon, but you can still try it slowly with a magnet during the experiment, and make a simple model first."

There were a lot of instilled things this time, Xu Fuyuan and Xia Yunyi both thought for a while before slowly nodding, and it looked like they were a little reluctant to accept it.

Zhu Cijiong thought for a while, then pointed to the drawn wires and said: "There is one last problem, the new generator and motor need to be wound with a lot of coils, and the wires cannot be connected together. It is not a coil, but a copper block. If the current rubber insulated wire is used, then the volume of the made one will definitely be scary. Therefore, a kind of enameled wire should be developed. A layer of insulating layer is used for insulation, the material of the enameled wire, Menghou, you are in charge."

When Bi Maokang heard this, he nodded quickly, yes, there are similar things, but he still doesn't know what kind of materials to use, but now the Ministry of Industry knows a lot about this, he just needs to organize relevant personnel to try That's it.

Zhu Cijiong also reminded: "If the existing materials are not enough, you can develop new materials, such as raw rubber and add some other things, or look for sap cut from trees similar to raw rubber. These can be used boldly. to try."

Bi Maokang nodded, cupped his hands and said, "I understand."

Zhu Cijiong thought for a while, and felt that it was almost done, so he directly waved his hand and said, "That's it for today, you go back and test more, and you can come to me at any time if you have any progress or problems."

After everyone heard the words, they saluted and resigned one by one. Immediately afterwards, the Ministry of Industry began a vigorous experiment campaign. Other things can be ignored. The things that the emperor has entrusted must be put in the first place!
In terms of the technology of Bi Maokang, Wang Zheng, Song Yingxing and others, they can be regarded as professionals in later generations, and they are all experts in their respective fields. Therefore, even if what Zhu Cijiong said has far exceeded Even with the current level of technology, these monster-level talents can't be difficult.

Wang Zheng made the fastest progress, because the so-called gearbox is just a structural change. Technically, there is nothing new. To put it simply, it is to add a shell to the gear. This is not too simple for Wang Zheng. .

After he went back, he took people to make the wooden mold himself, and then poured the pig iron, and then took it to the machine tool for processing. In less than three days, he made a simple gearbox.

Zhu Cijiong deliberately went to Wang Gong's factory to have a look, not to mention, it was really similar to the gearbox of later generations.

However, the latter worm gear reducer and planetary reducer are not so simple. The worm gear reducer is better, as long as you grind out a few special tools, you can always process it slowly; the planetary reducer is troublesome. , the gear ring of the inner ring cannot be processed by the current machine tool at all!
Zhu Cijiong flipped through the information in his mind, and then drew the sketch of the gear shaping machine to Wang Zheng, and made the gear shaping machine, and this problem was solved.

Immediately afterwards, Xu Fuyuan and Xia Yunyi made further progress. They directly made a set of simple generators and electric motors. The appearance was indeed a bit horrible, and the structure was also simplified by many times. However, they carried it in like a treasure The palace is coming!
Zhu Cijiong watched their performance with great interest. To Zhu Cijiong, this set of things was naturally nothing unusual, but to people of this era, it was simply unbelievable, because Xu Fuyuan used wires for generators and motors After receiving them together, as soon as Xia Yunyi turned the handle of the hand-operated generator, the shaft of the motor started to rotate, and the faster the generator turned, the faster the motor shaft rotated.

It seems that they have already understood the general principle of action. Zhu Cijiong also explained the relationship between the speed and the number of coil windings. I believe that the real motor model will be made soon!
(End of this chapter)