Method and apparatus for molecular evaporation and spreading of fragrance/active ingredients

This invention relates to a method and an apparatus for diffusion of fragrance/active ingredients (DW materials)in the air around or within an enclosed room or a ventilation device or an air-conditioning device through molecular evaporation or the air flow in the passages. The DW material is positioned on a strip-shaped DW material carrier (6) in a liquid form before diffusion in order to allow the air flow carrying DW material carrier loaded with the DW material to vertically pass through, and the DW material which is going to be evaporated is directly or indirectly to be heated to the temperature in which the molecule is evaporated during the circulation of the DW material on the DW material carrier (6).