An evaporation device is disclosed for evaporating volatile substances
such as insecticides and aromatics of a type having a housing containing
a heating block with a heating element, a container for a volatile
substance to be evaporated, a wick having a wick end protruding out of
the container into a wick opening in the heating block, a switching
device for the activation and deactivation of the heating device, and an
adjusting device for the adjustment of the degree of evaporation.
Preferably, two heating elements with different heating capacity are
carried by the heating block. The heating elements are operatively
connected to the switching device to adjust the heat output of the
heating device and the degree of evaporation of the volatile substance.