It aligns itself with the magnetic field of metal of the stove and starts a transduction of capicitive resonation that interferes with the polaritive vibrations of the planetary magnetic field.

This in turn creates a localized pulse of geomagnetic interference that the fan blades are sensitive to, and their shape works to create a single direction rotation that both pushes air and traps the interference and creates a perpetual motion at the same time.

Brilliant engineering, honestly.