That's right. Coanda oil screen is not only oil-free, but also easy to clean and care. While separating oil fume, it can also prevent fire and heat. In addition, the standard intelligent rotary washing and high-temperature electric heating can effectively melt some oil stains on the inner wall of the wind cabinet and the impeller, and then throw the oil stains outdoors and filter them into the oil cup through the centrifugal force of the wind wheel to complete the whole cleaning process. However, even this can't solve many problems, such as suction drop, poor smoking effect, difficult cleaning and nursing, even the shaking of the ventilator, safety and so on, caused by oil stains attached to the wind wheel for many years.