S6 edge cryogenic separator for liquid nitrogen I can't control the temperat

Hello.

Recently I have become the owner of a liquid nitrogen separator. It looks exactly like this: https://www.youtube.com/watch?v=EjtgrnlYlDI
Unfortunately, however, there is a problem of uncontrolled temperature drop.
The second time I refueled the thermos and the second time I have the same problem.
I will describe the last situation.
- I connect the drained thermos to the box.
- I start the device - it cools down to the set temperature - 140 degrees and maintains it.
- I turn off the equipment - the temperature rises to +2 degrees
- when the temperature increased, I decided to turn on the device again - I wanted to check how it deals with the glass in the iPhone - I set -110 degrees
- after reaching the temperature of -110 the temperature decreases further, and through the can connected next to the hoses, more and more cold air is escaping, as if the pressure in the thermos was rising uncontrollably. I panicked, unplugged the tube and covered the thermos with several blankets, in a few minutes the thermos was empty.

From what I've seen there are 2 types of such devices, one has a built-in pump that pumps air into the thermos and a return hose that brings "frost" to the device and the other which using a vacuum pump.
I wonder if I should not oil the built-in pump and connect the vacuum pump?

Maybe I'm doing something wrong?
Unfortunately, I can't find the instructions anywhere.
Has anyone maybe something like this or some experience with it?
I will be grateful for any help in taming this equipment.

Unfortunately, in Poland you will not find (so far) anything about cryogenic separators. But maybe you have already drawn some conclusions yourself? I wonder where you bought such a separator Because so far I haven't found a single in Poland for liquid nitrogen. And they are certainly much cheaper. Separators that do not need liquid nitrogen cost us a minimum of 13.5 thousand zlotys ..... In addition, their effectiveness is questionable, because you can not find anything about them ... At least in Polish forums.

bogdan2491 wrote:

110 the temperature keeps dropping

You mean from -110 to e.g. -140 saying it fell like that? And at what level did you turn off the machine and remove the hose. Also show on the picture which snake you took exactly.

Maybe not many people have this machine in PL, but we will think together what to do

bogdan2491 wrote:

box connected next to the hoses

Is this the black muffler at the machine?

I disconnected at -160 because no more steam, and the liquid began to escape from the muffler. That's the muffler. I unhooked from the cylinder and covered with blankets, dealing with such a temperature I did not wonder which one to disconnect
At the moment, in place of the silencer I connected a vacuum pump, I came to the conclusion that it will not be possible to create excessive pressure by bending, freezing the return hose.
So far the problem has not yet occurred, but it cools down more slowly.

Regarding effectiveness, it is like everything, you have to beat yours to get into practice, I bought it at an allegro, at an affordable price

Sure. And tell me, is nitrogen not escaping too quickly? The thermos is tight enough that it is not enough for only a few days of work, but more peacefully? I am really talking about few repairs here (it is widely known that it runs out quickly), because I read that some have a problem with nitrogen leakage. After about a week, using up to several to several dozen displays, the cylinder is empty.

A dewara dish is such a large thermos, the more heat gets inside, the faster the nitrogen "disappears". It all depends on the properties of the dish whether it was Chinese in a set with a separator or a professional dish.




Here is an example page with dewara dishes




http://www.cryogen.pl/oferta.html




It has a table and a thermostability parameter, i.e. days after which all the nitrogen will evaporate from the vessel. As you can see, it all depends on the model and the discrepancy is very large.

I am thinking about thermos insulation, but this week is correct. On the other hand, something for something, nitrogen costs are not high and if you manage to do it, let's do it with two s6 on one refueling then you are still ahead.
Certainly, nitrogen is much more time-consuming, because you have to refuel, because it evaporates, etc. On the other hand, it also draws electricity and it is not enough, and how it would go wrong, it is interesting who and on what parts it would fix, because in there is nothing to break with nitrogen

Recently, I have become a happy (hopefully) owner of a liquid nitrogen separator with a built-in pump. The first thing I noticed is that the temperature can fluctuate strongly.

This week I will have the first displays, I will definitely report on putting up.

Maybe your colleague will show off his experience of putting up? I wonder what is the best temperature for s7 and how long should I freeze such a display.

Ok, I'm already trying to separate the first functional display. Earlier I tried on corpses. The surgery was successful, unfortunately the patient did not survive. My observations are as follows.

First of all: The display bent quite strongly during cooling, which could damage it.

Secondly - The problem appeared at the beginning when trying to stick a thin piece of plastic between the display and the glass. Only after bending the whole part of the glue released, which allowed entry between the display and the glass.


At the end I didn't need a business card to get around the tape touch, unfortunately part of the tape suffered, so the touch got crazy.

As a consequence, approximately 70% of the display has spilled.

I have a little mixed feelings about the seperator, especially since with a simple hot and metal opener I almost managed to remove the glass.

Of course, we're talking about s7 edge.

Special molds for cryo (similar to lamination) are used for Edge and this form is left in the cryo so that it cools down - later the LCD is placed on it so that the glass contact with the mold is on the entire surface and not just on a flat part - that's probably your operation failed.

Right, the edges of the screen went the worst, although I am more afraid of the very beginning, getting between the display and the glass.

Once upon a time I came across a video showing this form. Does the display cool down evenly have a different use? On the video, the display slid into the form, it held the wound fast, so that the glass had no way to bend, and the display on a large surface itself departed from the fast.

Ok, I've got pronlem. I managed to separate 2 displays today. Helped a feeler gauge. 0.2mm is just right for the initial "breaking" between the LCD and the glass.

As for the multi-com statement, you have found a very interesting way to promote your articles, for sure now some people will come to your store and buy a piece of aluminum for almost PLN 200

@ luklas944: It so happens that we do not have lamination molds for KRIO and we do not sell them because they are basic equipment of KRIO .... attention therefore missed.

luklas944 wrote:

Ok, I've got pronlem. I managed to separate 2 displays today. Helped a feeler gauge. 0.2mm is just right for the initial "breaking" between the LCD and the glass.

And how the displays did not stratify. Congratulations, now let's fold the display with the glass evenly, which is not the easiest thing even with forms

I haven't looked in tefo topic for a long time, I decided to share new experiences.
I did not have a problem with delamination. Now I do it at -155 ° C and it's ok.

The displays freeze together with the frame, then I bend. They go away beautifully.

Unfortunately, I encountered another problem, namely the pink vertical bar. It is almost always shown after detaching the tape from the display. Always in the same place. I remove the tape with playing cards, a little spirit and hot air. The strip sometimes disappears when the display tape is glued again.

Can anyone help? Because in this case I just lack in my imagination. I don't know how to avoid it ...

Hello. For some time I have also been playing a bit of hobby with this topic, investing not small money in devices. Unfortunately, I got stuck on the unhappy displays of Edge models and I am thinking about buying the same nitrogen machine as a colleague directly from China because it is still a reasonable price for me at home. When it comes to the subject of this machine, I have two questions, the first, what is the cost of buying an empty cylinder, and the second, assuming that the cost of purchase with shipping is around PLN 2,200, what additional costs will I be charged with the customs office?

Thanks to everyone for the answers, I solved the problem by disconnecting the built-in pump and replacing it with a vacuum pump connected in place of the muffler, which sucked nitrogen from the cylinder through the machine on which I put the displays.
Thanks to this, the cylinder did not create too much pressure, which caused the temperature to drop despite turning off everything.
The temperature has become manageable, but despite this I gave up the topic for some time.
I consider the problem to be solved in the event that someone has a similar problem in the future and explanations are not enough for him, I advise on PW