Ventilation ducts are also municipal infrastructure, used for ventilation and air conditioning of industrial and civil buildings, as well as metal or non-metal ducts, with the purpose of circulating air and reducing the concentration of harmful gases.

　　通风管将长期生锈，此时将存在安全隐患。 很少有人注意到姑苏通风管道的安全隐患。 消防部门通过本报纸特别提醒生产企业和餐饮业者，必须定期清除烟道中的油脂，以防止过多的油脂和因管道温度过高而引起的火灾。 但是，通过我们的查询实践，由于各种原因，许多公司和饭店现在都不愿意执行此“肮脏的工作”。

　　The ventilation pipe will rust for a long time, and there will be potential safety hazards. Few people pay attention to the safety risks of the ventilation pipes in Gusu. Through this newspaper, the fire department specially reminds the manufacturers and catering enterprises that they must regularly remove the grease in the flue to prevent the excessive grease and the fire caused by the high temperature of the pipeline. However, through our inquiry practice, due to various reasons, many companies and restaurants are not willing to carry out this "dirty work".

　　至于餐厅老板的通风管道的清洁，只要排气正常，谁就会去排气管。 但是，如果是工厂的排气管，酒店的排气管，如果长时间不完工，则油会粘附在管的内壁上，尤其是火灾。

　　As for the cleaning of the restaurant owner's ventilation pipe, as long as the exhaust is normal, who will go to the exhaust pipe. However, if it is the factory exhaust pipe, the hotel exhaust pipe, if it is not completed for a long time, the oil will adhere to the inner wall of the pipe, especially the fire.

　　就酒店的油烟通风管道而言，这是因为中国食品制造业通常使用油炸，油炸，煮熟，油炸等方法，因此在扫除时烟雾会凝结，并保持烟雾的外观 提取器和油烟。 管的内壁可在短时间内形成一层油脂。 油烟管的角落是油脂和隐蔽处的简单堆积。 但是，在这个简单的结垢位置，不容易清洗。

　　In terms of the hotel's fume ventilation pipes, this is because the Chinese food manufacturing industry usually uses the methods of frying, frying, boiling, frying, etc., so when cleaning, the smoke will condense and maintain the appearance of the smoke extractor and fume. The inner wall of the tube can form a layer of grease in a short time. The corner of the lampblack pipe is a simple accumulation of grease and concealment. However, in this simple scaling position, it is not easy to clean.