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安裝清洗人員先將管道上下段拆除，即空降式方法，主要用于清洗50厘米以上的垂直煙道。將安全繩固定在煙道上安全處，系好安全帶，安裝清洗人員自上而下清洗垂直煙道內的油污。這種方法危險性較大，但是卻更專業，更堅韌，清洗效果更好。由于垂直煙道一般積油會較少，所以每年清洗一次即可。

The installation and cleaning personnel first remove the upper and lower sections of the pipeline using the airborne method, which is mainly used to clean vertical flues over 50 centimeters. Fix the safety rope at a safe place on the flue, fasten the safety belt, and install cleaning personnel to clean the oil stains inside the vertical flue from top to bottom. This method is more dangerous, but it is more professional, resilient, and has a better cleaning effect. Due to the fact that vertical ducts generally accumulate less oil, cleaning them once a year is sufficient.

這種方法勞動強度大，即人工進入法。對于厚度超過40厘米的煙道，可以手動鉆入進行清理。注意通風和照明。

This method has a high labor intensity, which is the manual entry method. For ducts with a thickness exceeding 40 centimeters, they can be manually drilled in for cleaning. Pay attention to ventilation and lighting.

當無法人工進入時，當排氣管小于40cm時，采用此方法，即拆卸法。根據現場具體情況，安裝保潔人員每隔一定距離安裝、拆除一段排煙管，對兩側進行加寬保潔。該方法效果好，難度系數高，韌性好。

When it is not possible to manually enter and the exhaust pipe is less than 40cm, this method, namely the disassembly method, is adopted. According to the specific situation on site, installation and cleaning personnel should install and remove a section of smoke exhaust pipe at regular intervals, and widen and clean both sides. This method has good effectiveness, high difficulty coefficient, and good toughness.

安裝清洗人員選用無焰專用工具在管道的一側或多側鉆孔，即開孔方式。對于無法人工進入且難以拆除的排煙管，請選擇此方法。根據現場情況確定鉆孔的大小、間距和數量，清除油污后恢復管道密封。

The installation and cleaning personnel use flameless special tools to drill holes on one or more sides of the pipeline, that is, the drilling method. For smoke exhaust pipes that cannot be manually entered and are difficult to remove, please choose this method. Determine the size, spacing, and quantity of boreholes based on the on-site situation, and restore pipeline sealing after removing oil stains.

此方法用于清洗排氣管，清洗周期短，即設備清洗方法，目的是減少油污。先向管道內噴灑清洗劑使油軟化，然后用30米長的電動軟軸刷將油清洗干凈。 此方法應用于三十厘米的豎排煙道 ，人工無法進到且不易拆裝的小排煙道 。這類不容易清洗并且容易積油要縮短清理周期時間。

This method is used to clean exhaust pipes, with a short cleaning cycle, which is the equipment cleaning method aimed at reducing oil pollution. First, spray cleaning agent into the pipeline to soften the oil, and then use a 30 meter long electric soft shaft brush to clean the oil thoroughly. This method is applied to a 30cm vertical exhaust duct, which is difficult to disassemble and cannot be manually accessed. This type is not easy to clean and is prone to oil accumulation, so the cleaning cycle time should be shortened.