Vapor Phase reflow oven

[hobbyelectronics]

Hi,

Just a thought more than anything.

If you used a very tall chamber and heated the fluid at the bottom, would vapor ever rise high enough to escape?
It would cool down before it got to the top of the chamber. Is that right?

If that is true, maybe have a mechanism that lowers the board into the vapor. Either when the vapor is present or before the cycle starts like the IMDES.

How tall is tall? I have no idea.
Maybe have the chamber split into two sections, insulated somehow between the the bottom half and top half, so the heat does not travel up the wall of the chamber to the top cooler half.

Or is this just a bit too daft 

Might be difficult to do with getting bits made but just an idea.

Any thoughts on this?