watercone I solar seawater desalination

The Watercone is a simple device for solar seawater desalination (solar still) which is designed for cheap mass production beeing the first of its kind.
The Watercone can desalinate up to 1-1,5L  per day, enough for a child to survive.
Many peripheral small units can ensure a better supply of freshwater than one central big generator. If the big one fails, there is no water for the people. If a small one fails, the other ones still keep on working.