1. Pressure cooker steam flushing method. Boil cold water in the pressure cooker, when there is a continuous discharge of steam to remove the restriction valve, open the hood, the steam column of water against the rotating fan blade, due to the high heat of the water vapor into the fan and other components, the oil sewage will follow the path of the waste oil cup, until the oil cup has no oil so far.

2. Detergent, vinegar soaking method. Remove the impeller, soak in a pot of warm water mixed with 3-5 drops of detergent and 50mls of vinegar, soak for 10-20 minutes, then scrub with a clean rag. The casing and other parts are also cleaned with this solution. This method has no damage to human skin, no corrosion of the device, and the surface still maintains its original luster after cleaning.