The basic part was a conventional light bulb.
Its contacts are hermetically sealed, and the spiral is separated. I managed to do it like this.
I thought that we would get an additional plastic evaporator module, which could be replaced in case of a spiral burnout. That's how the battery pack would have looked like.
And that's how the replacement interchangeable evaporator would have been inserted; it is white in the photo.
Here is a better graphic representation of the place of their connection.
In my mind, there was a stereotype that the liquid was necessarily to be fed from above or below by pressing a button similar to the one in a flashlight.
And then the location of the parts would have been like this.