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　　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.

　　通風管將長期生銹，此時將存在安全隱患。 很少有人注意到姑蘇通風管道的安全隱患。 消防部門通過本報紙特別提醒生產企業和餐飲業者，必須定期清除煙道中的油脂，以防止過多的油脂和因管道溫度過高而引起的火災。 但是，通過我們的查詢實踐，由于各種原因，許多公司和飯店現在都不愿意執行此“骯臟的工作”。

　　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".

　　至于餐廳老板的通風管道的清潔，只要排氣正常，誰就會去排氣管。 但是，如果是工廠的排氣管，酒店的排氣管，如果長時間不完工，則油會粘附在管的內壁上，尤其是火災。

　　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.

　　就酒店的油煙通風管道而言，這是因為中國食品制造業通常使用油炸，油炸，煮熟，油炸等方法，因此在掃除時煙霧會凝結，并保持煙霧的外觀 提取器和油煙。 管的內壁可在短時間內形成一層油脂。 油煙管的角落是油脂和隱蔽處的簡單堆積。 但是，在這個簡單的結垢位置，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.