The impeller vortex air pump is similar to that of the turbomachine. When it is rotating,the air among the vanes flows along the edge of the vanges under the function of centrifugal forceenters into the annular caviity of the pump. then returns to the impellerflows along the initial route again.Therefore the circulataing air leaves the pump with high energy. The vortex pump adopts special-purpose motor.It featuers compact structure,small size、light weight、low noiseno wateroii in the feeding air.