After each cooking, let the hoodsucker work continuously for 30 seconds to 1 minute, and take out the remaining fume, water and carbon monoxide in the air. At the same time, taking advantage of the residual heat on the hood, simply wipe the surface with a rag, which can easily wipe off the grease stains on the hood and keep it clean and not greasy. 2. Cleaning method of fan blade of oil-smoke suction machine 1. Cleaning detergent and vinegar soaking method. Remove the fan blades and soak them in a pot of hot water mixed with 2ml detergent and 50ml vinegar. After soaking for about 15 minutes, wipe them with a clean cloth. The fuselage of the lampblack machine is also cleaned with this solution. Attention should be paid to keeping the temperature of the solution at about 60 C. The decontamination effect is * 2. Steam washing method of high pressure pot. The pressure cooker is filled with half pot of cold water and boiled. When the steam is continuously discharged, the lower pressure limiting valve is removed. The hood is turned over and the steam column is pointed at the rotating fan blade. Because the high hot water steam continuously washes the fan blade, the oil and sewage will flow into the waste oil tank along the drainage tank. 3. After drying the fan blades of the scrubbed lampblack machine, apply a layer of common glue on them. After several months, tear off the oil stains on the fan blades. The oil stains are all on the glue layer, which is convenient and clean. 4. Spread newspapers on the kitchen table, turn on the switch of the hood and "preheat" the fan blades for two minutes, spray detergent on the fan of the hood, turn off the hood, stand for three minutes, then spray hot water at 60 C into the fan of the hood, turn on the switch, and let the dissolved oil drip into the oil storage box.