This product uses the electronic dust purification. Han Yan exhaust fan suction pipe is, first enter the primary device - clean rectifier room, using gravity inertia purification technology, the special structure of the interior of the large particle pollutants gradually graded physical separation and balance of rectification. Large particles isolated droplets under its own gravity into the tank discharge. The small size of the remaining contaminants from entering the secondary device - high voltage electrostatic field, electrostatic floor part two, first level for the ionization device, the strong electric field of charged particles, a charged particle, the charged dust particles to reach the second level electrode device was collected immediately after adsorption, and some charring. Meanwhile, the high voltage electrostatic field effectively degrade harmful ingredients, played disinfection, deodorization effect. Finally, filter grille, clean air from outdoors.