An important part of the hygiene of the unit canteen is the regular cleaning of kitchen fumes, and the emission of fumes must comply with the "Food Industry Fume Emission Standards", so regular cleaning of the canteen fume duct is an indispensable part. However, how is the fume duct of the unit canteen cleaned? What are the cleaning methods? The following SHINELONG editor will share with you the cleaning method of the fume duct. 1. Why is it important to clean the fume duct? 1. Too much oil pollution, there are safety hazards: After the accumulation of oil pollution in the kitchen fume duct, exhaust equipment and other exhaust systems, the safety of the hotel kitchen is reduced, and the fire hazard is greatly increased. After the accumulation of oil pollution in the kitchen fume hood and the air compressed pipe on the hood, when the frying stove is working, when the chef is frying, the flame of the burner flies up and enters the fume hood and fume duct, which can easily cause the oil pollution in the hood and the pipe to burn and cause a fire. 2. The accumulation of oil stains will cause poor kitchen exhaust and poor exhaust effect: when too much oil stains accumulate in the kitchen fume duct and exhaust fan, the exhaust effect of the kitchen will deteriorate, resulting in poor kitchen exhaust. The fumes trapped in the room will flow into the restaurant or the room near the kitchen. It seriously affects the dining environment of diners in the restaurant and directly affects the economic benefits of the restaurant. 2. What are the cleaning methods for the fume ducts in the unit canteen? 1. Disassembly method: This method is the most thorough and effective cleaning method, but the construction is difficult, the number of workers is large, and the cost is relatively high. The fume duct cleaning plan is: according to the actual situation of fume duct cleaning, the technicians calculate that a section of the fume duct is disassembled at a certain distance and extended in two directions for cleaning to ensure thorough cleaning and ensure the quality of cleaning. 2. Opening method: This method is relatively easy and relatively low in cost compared to the disassembly method, but the cleaning effect is also relatively different. The specific method is: the technicians calculate the interval distance, opening position, size and number of holes to be opened, and clean the fume duct in the fume duct through these holes. Finally, seal each hole. 3. Mechanical equipment method: This method is the easiest to operate, the least difficult, the least labor-intensive, and the cheapest way to clean the fume duct, but the cleaning effect is also the worst. However, for the cleaning of vertical fume ducts with a cleaning cycle of less than half a year, this cleaning method is undoubtedly the best choice. The specific method is: after spraying the oil dispersant into the fume duct, use an electric soft-shaft brush and a pneumatic soft-shaft brush that can be inserted into the fume duct for up to 30 meters to clean the inner wall of the fume duct. 4. Horizontal fume duct cleaning: It is recommended to clean it every six months. 3. Cleaning standards for oil fume ducts in unit canteens 1. After cleaning the hood and flue, more than 90% of the original iron color of the inner wall of the flue can be seen, and no stubborn oil residue remains; 2. The surface of the stove is free of charge, so that the surface is free of oil and bright and clean; 3. The fan impeller reaches more than 90% of the surface to see the primer, and there is no precipitated oil at the bottom of the motor; 4. Different cleaning methods for external flues will achieve different effects: a. The opening method can make more than 90% of the inner wall of the flue reveal the original metal color; b. The mechanical equipment method can only remove about 85% of the surface oil. Note: Do not clean the oil fume duct by yourself. It is recommended to ask a professional cleaning company to clean it; avoid damage to the pipe and unclean cleaning when cleaning it yourself, while the cleaning company will clean it intact and the price is not expensive. The internal humidity of the oil fume duct in the unit canteen is high, and the oil fume itself is easy to breed bacteria, so the inside of the oil fume duct in the canteen is easy to form a breeding ground for bacteria. Regular cleaning of the oil fume duct is not only to prevent fires before they happen, but also a must for food hygiene. This article is about the cleaning method of the canteen fume duct introduced by SHINELONG editor. If you have any questions about the kitchen, please follow and consult SHINELONG online customer service.