Siheyuan: Concentrating on science and technology is the right way

Although this is the first day their institute has been put into use, it is already on the right track.

People in each position also perform their duties and are responsible for their own work.

The only thing is, because Meng Yuxin and the others are still busy with the photoplotter, they are still in the rolling mill.

So after turning around, Lin Weidong went back to his office.

"Brother Wei Dong, what am I going to do next?" Seeing them stop, Zhao Pan'er asked.

"rest!"

"Rest?" Zhao Pan'er was a little surprised.

"What do you think, this is a very easy job, there is not much to do."

"Usually, if I see something running out in my office, I go to the logistics warehouse to get some, or help pour tea, sort out drawings and so on."

"At most, if I have something to announce, please let me know."

"Oh!" Zhao Pan'er nodded: "Brother Wei Dong, are you thirsty now?"

"If I'm not thirsty, don't tell me you won't fall. I don't have any vision." Lin Weidong said angrily.

"Oh!" Zhao Pan'er stuck out her tongue, and hurriedly poured a cup of tea for Lin Weidong.

At this time, Lin Weidong was already designing new drawings.

Now what he wants to design is a refrigerator, which is a good choice whether it is convenient for his own use or for export to earn foreign exchange.

Under Lin Weidong's pen, drawings are drawn one by one like machine printing.

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Zhao Pan'er watched quietly from the side, adding some tea to Lin Weidong from time to time.

Then he sorted out the drawings that Lin Weidong had just drawn, and carefully put them on the shelf next to him.

......

At the same time, in the back kitchen of the rolling mill, He Yuzhu was cutting vegetables absent-mindedly.

After a long time, I finally couldn't help asking: "Ma Hua, why didn't Sister Ye come to work today? Did she ask for leave?"

Hearing this, Ma Hua looked over strangely: "Now that the research institute has been built, of course Sister Ye and the others are going to the research institute."

"Didn't you notice that, apart from Sister Ye, no one from the other research institutes was there?"

"Going to the research institute? So, Sister Ye won't (Nuo's Zhao) come here again?" He Yuzhu's heart sank, and he asked hastily.

As for the others, he didn't bother to care.

"Of course, Sister Ye and the others are from the rolling mill...hey, why are you going?" Before Ma Hua finished speaking, he saw He Yuzhu put down the kitchen knife and walked outside.

"I'll go to that research institute to have a look."

"You think the research institute belongs to your family, we can enter that place casually." The fat man mocked.

"That's right, the security department of the research institute is all armed with guns and patrolling 24 hours a day." Liu Lan also nodded.

He Yuzhu was shocked when he heard that the security department of the research institute was carrying a gun with him.

But still a little reconciled.

"You tell me, what conditions do you need for me to enter the research institute's back kitchen? My cooking skills are not bad."

When the people in the back kitchen heard this, their faces became even weirder. The people in the research institute couldn't think about it more, and they would want He Yuzhu.

I'm afraid it is impossible for Ma Hua to go there, and it is impossible to ask He Yuzhu, a stunned idiot

Chapter 160 Three: The working principle of the refrigerator, and the photoplotter is completed

"Stop dreaming." Liu Lan said angrily.

"A place like the research institute, can we people just go in?"

"I've heard from Factory Manager Li that although Sister Ye and the others were recruited normally, but on the day they joined the company, all three generations of their ancestors were clearly checked."

"This is too scary." It was the first time Ma Hua and others heard the news.

However, none of them had the slightest doubt about the accuracy of the news.

After all, they all know something about the relationship between Liu Lan and Deputy Factory Manager Li.

"Isn't it three generations of ancestors, but I..." Halfway through speaking, He Yuzhu suddenly froze.

Now he can't casually say that he is a third-generation farm laborer. Before he was implicated by the deaf old lady, after he was arrested, he directly checked all his family background.

After thinking about this, He Yuzhu found a place to sit down in dejection.

"You want to be lazy again, don't you see that we are still busy?" Fatty always supervised his former "master".

At the same time, Lin Weidong was also perfecting the blueprint of the refrigerator in front of him.

In fact, the working principle of the refrigerator is really not very complicated.

"Jun Yang ⑴ $ ⑹ & Ba ② ⑴ $ wife wife one $ ⒍"

A refrigerator consists of a cabinet, a refrigeration system, a control system and accessories:

In the refrigeration system, it mainly consists of four parts: compressor, condenser, evaporator and capillary restrictor, forming a closed cycle system:

Wherein the evaporator is installed above the interior of the refrigerator, and other components 907 are installed on the back of the refrigerator.The system will be charged with refrigerant.

The refrigerant is vaporized from low-pressure liquid to gas in the evaporator, which absorbs the heat in the refrigerator and lowers the temperature in the refrigerator.

The gaseous refrigerant is inhaled by the compressor, compressed into a high-temperature and high-pressure gas by the compressor, and then discharged into the condenser.

In the condenser, the refrigerant continuously releases heat to the surrounding space and gradually condenses into liquid.

These high-pressure liquids must flow through capillary tubes, throttling and depressurizing to slowly flow into the evaporator, and maintain continuous vaporization in the evaporator, absorbing heat and cooling down.

In this way, the refrigerator uses electric energy to do work, and with the help of the state change of the refrigerant, the heat around the evaporator in the box is transferred to the condenser behind the box to release it, so that the cycle goes round and round to achieve the purpose of cooling.

Therefore, it is not very difficult to make. Most of the materials are available in the current research institute.

The only thing missing, is the refrigerant.

Lin Weidong remembered that foreign countries discovered Freon 30 as a refrigerant around the 12s.

Later, several refrigerants such as Freon 22 were discovered.

But these refrigerants will cause damage to the ozone layer.

Finally, the R410A refrigerant that is more environmentally friendly, does not damage the ozone layer, and (ahci) and has higher working efficiency is produced.

R410A refrigerant is a mixed refrigerant composed of HFC substances.

Mixture of R32 (difluoromethane) and R125 (pentafluoroethane).

Especially the second one, which seems to have not been discovered yet.

Lin Weidong knows how to make it, but this thing, he is a chemical thing.

That is, it does not belong to physics, let alone machinery.

Lin Weidong's mechanical research institute has absolutely no conditions for production.

It seems that after waiting, we will try to see if we can get in touch with some chemical research laboratories through the big leaders, or Professor Li and the others.

At this moment, there were two knocks on the office door.

"I'll go to the shutter." Zhao Pan'er, who was in a panic, hurried to open the door, and Meng Yuxin was outside.

"Lin Gong, we have already produced all the parts of the photoplotter." Meng Yuxin reported.

"That's great." Lin Weidong stood up directly.

After a week, they finally completed all the materials for the photoplotter.

"Take me there quickly."

"it is good!"

Because the research institute has just been completed, all those parts are still in the rolling mill.

After Lin Weidong arrived at the rolling mill, in an empty room, he saw various parts neatly arranged, as well as various tools needed for assembly, but because assembling a photoplotter was too complicated.

So it took two and a half days to assemble three photoplotters.

This speed was only achieved with the help of all the engineers and technicians in the research institute.

After the assembly was completed on Lin Weidong's side, Director Yang and Deputy Director Li ran over like sharks smelling blood.

"Weidong, is this the photoplotter you designed yourself?" Looking at the brand-new machine in front of him, Director Yang kept smiling.

"I will keep one in the rolling mill." Seeing Director Yang like this, Lin Weidong knew what he wanted to say.

If it weren't for this, Lin Weidong wouldn't have assembled three sets directly.

"Haha, that's really great." Director Yang laughed.

But then he looked at the remaining two photoplotters: "Weidong, what are you going to do with these two?"

"The institute needs one."

"That's what it should be. What about the last one?"

"I plan to send it to my teacher." Lin Weidong said angrily.

"It should be!" Factory Manager Yang said with a smile.

After returning to the institute, Lin Weidong contacted Professor Li.

Drawings for photoplotters, they should be in great need.

Soon after the call was transferred, before Lin Weidong could speak, Professor Li's excited voice came from the opposite side: "Weidong, I just wanted to contact you and tell you good news."

"Good news? Could it be that the drone made it?"

"Yes, we have successfully produced a sample, and the effect is much better than we expected. It is really strong."

"That's really good news."

However, Lin Weidong didn't show too much excitement, because he knew that this was inevitable.

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