Direct mesh to coil contact juice feed : video

[kinabaloo]

One weakspot of the current atomizer is the airflow pulling juice from the metal foam to the coil.

So a pity that we cant just have the metal foam touching the coil - because it conducts electricity. Then breakthrough idea: need only touch one end of the coil (the end conncted to the case power line).

So rigged this up and videoed the result: http://www.kinabaloo.com/direct_mesh.AVI

This would be similar to designs where the coil wick touches the metal foam (cigars) but this is even more direct, metal to metal. 901 atomizer used. In effect the juice travels from the foam into the coil wick, but the amount of wick between coil and foam is very very short in my layout (much shorter than in a cigar). The foam was well soaked before applying power. Worked well; no problems.

If the other end of that foam was inserted into a juice reservoir, this would just carry on producing fog for hours without even puffing!

 

[Tom09]

Funny idea, just a bit too much material with high heat conductivity...
(the reservoir should stay in the cold)

 

[kinabaloo]

Funny idea, just a bit too much material with high heat conductivity...
(the reservoir should stay in the cold)

You might think that - but sometimes things dont work as you expect. This works well. I have shown it.

You should follow the truth / facts rather than your preconceptions.

It was running on a lowish battery with PCM at about 75% - still worked well.

 

[kinabaloo]

In fact, I also tried wrapping the coil in mesh - that does slow the heating by a second or two but also works; the coil's oxide makes it electrically possible.

For a coil sticking out of mesh, no noticeable heat loss/delay, just plenty of fog

 

[Tom09]

Yes, it will work for dripping. For combination with direct feed, without cart.

 

[Kate51]

Just a curious question, how much "char" do you see in the mesh after burn off. And how many times can the mesh itself stand the heat without disintegrating? Thanks

 

[kinabaloo]

Yes, it will work for dripping. For combination with direct feed, without cart.

It;s a bit beside the point whether with dripping or cart. This is not a mod, but an experiment. It could lead to a new atomizer layout/design, that does not rely on airflow for juice feed.

The juice flow from cart to foam remains a bigger headache. But the new atomizer could do something there too; perhaps the atomizer is filled with juice rather than a cart (no join).

Just a step along the way ...

 

[kinabaloo]

Just a curious question, how much "char" do you see in the mesh after burn off. And how many times can the mesh itself stand the heat without disintegrating? Thanks

The mesh is not heated. Think of it as coil wick to mesh contact, but with the coil wick that extends beyond the coil area being very short.

 

[kinabaloo]

As juice is vaped off the wick more is drawn in automatically. When relying on air flow for juice flow to coil, it easy for the coil to frequently get dry and overheat. And in this lies the main advantage of this design.

A second advantage is that draw could (optionally) be made easier; because the restriction in airflow necessary for the air flow to pull droplets from the foam to the coil is not there. And we don't know how much of those droplets miss the coil.

 

[Kate51]

Judging from the droplets on the 801 cart, for example, may mean quite a few miss. This just struck me as something worthwhile pursuing, GOOD LUCK with it.

 

[kinabaloo]

Judging from the droplets on the 801 cart, for example, may mean quite a few miss. This just struck me as something worthwhile pursuing, GOOD LUCK with it.

I'm a bit busy with temp control circuitry at the moment; that's why posted it so others can take it further.

If I have a further idea I will try it out; it's easy with my setup and I know nichrome coils dont easily burn out if clean.

With direct juice feed (or injection) and temp control, burnt tastes should become a thing of the past.

 

[Drewsworld]

Kinabllo,
I always follow and lurk around your mods and I think you are great...I was wondering if you have ever examined a Greencig cartomiser...They us a hair like stranded material as a sort of bridge that seems to somehow withdraw the fluid from the batting in the mini cart...I have never been able to find out exactly what the material is, but am wondering if it could posibly have conductivity properties as well....Keep up the great work....
Drew

 

[kinabaloo]

Kinabllo,
I always follow and lurk around your mods and I think you are great...I was wondering if you have ever examined a Greencig cartomiser...They us a hair like stranded material as a sort of bridge that seems to somehow withdraw the fluid from the batting in the mini cart...I have never been able to find out exactly what the material is, but am wondering if it could posibly have conductivity properties as well....Keep up the great work....
Drew

Tom09 pointed this out in an adjacent thread. Really looks like a lock of hair - but must be some kind of glass-fibre? Wierd that it can be so flexible ...

 

[seminolewind]

Kinabaloo, I also enjoy reading your input on things, and this experiment. My friend gave me her SE cartomizer to take apart, and instead of looking like my atomizer, it looked like a long strand of wire going up thru the middle of the cart. Would this be a more efficient system or one that could be easily duplicated?

 

[SharonLM]

Kinabaloo: Wow, sometimes I'm just so impressed with this forum and this is one of those times. Keep up the good work, please!!

 

[kinabaloo]

Kinabaloo, I also enjoy reading your input on things, and this experiment. My friend gave me her SE cartomizer to take apart, and instead of looking like my atomizer, it looked like a long strand of wire going up thru the middle of the cart. Would this be a more efficient system or one that could be easily duplicated?

Maybe this is the design that Tom09 and Drewsworld have pointed out. I am not familiar with it, but that type does something similar, but with fibres rather than metal foam.

 

[Drewsworld]

Kina,
There are several Integrated atomizer cartridge types, However the Green World Technologies is very different in its construction...There is a utube video that is in German and shows one disassembled..Im not that good on here , or I would post a link...

 

[seminolewind]

I was thinking that instead of trying to replicate the inners of an atomizer like in a 901, those cartamizers last much longer without refilling juice. And the parts look a heck of alot easier to replicate if you build one.

 

[kinabaloo]

Kina,
There are several Integrated atomizer cartridge types, However the Green World Technologies is very different in its construction...There is a utube video that is in German and shows one disassembled..Im not that good on here , or I would post a link...

I guess what I would do is have a sealed cart/atomiser unit that was refillable via a valve (like a cigarette lighter but no pressure, just gravity). The liquid would be wicked directly into the coil and when heated, vapor would be emitted through a vapor valve and into the airstream. Pressure of expansion would push the vapor out the second valve (outlet only).

 

[kinabaloo]

Kinabaloo: Wow, sometimes I'm just so impressed with this forum and this is one of those times. Keep up the good work, please!!

The idea of wicking straight into the coil was around before I joined vaping. But no-one had tried it, asfaik (forget who, but i still remember the pic; was on a blog). Not here anyway, Seems some manufacturers did though, over in ShenZhen.

Not knowing that, I was curious to try the metal foam as we know that this wicks well and is sturdy.