安装清洗人员先将管道上下段拆除，即空降式方法，主要用于清洗50厘米以上的垂直烟道。将安全绳固定在烟道上安全处，系好安全带，安装清洗人员自上而下清洗垂直烟道内的油污。这种方法危险性较大，但是却更专业，更坚韧，清洗效果更好。由于垂直烟道一般积油会较少，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.

这种方法劳动强度大，即人工进入法。对于厚度超过40厘米的烟道，可以手动钻入进行清理。注意通风和照明。

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.

当无法人工进入时，当排气管小于40cm时，采用此方法，即拆卸法。根据现场具体情况，安装保洁人员每隔一定距离安装、拆除一段排烟管，对两侧进行加宽保洁。该方法效果好，难度系数高，韧性好。

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.

安装清洗人员选用无焰专用工具在管道的一侧或多侧钻孔，即开孔方式。对于无法人工进入且难以拆除的排烟管，请选择此方法。根据现场情况确定钻孔的大小、间距和数量，清除油污后恢复管道密封。

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.

此方法用于清洗排气管，清洗周期短，即设备清洗方法，目的是减少油污。先向管道内喷洒清洗剂使油软化，然后用30米长的电动软轴刷将油清洗干净。 此方法应用于三十厘米的竖排烟道 ，人工无法进到且不易拆装的小排烟道 。这类不容易清洗并且容易积油要缩短清理周期时间。

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.