It is a common problem that dust enters the sewer of range hoods. Due to the long-term use of range hoods, grease and dust in the lampblack pipes will be continuously deposited, which leads to the dust entering the sewer of range hoods. This not only affects the effect of the range hood, but also easily leads to health problems and security risks. Therefore, we need to deal with this problem in time. Here are several effective methods:

1. Daily cleaning: After each use of the range hood, the filter screen of the range hood should be cleaned immediately to remove grease residue. In addition, cleaning the exhaust pipe of the range hood regularly can reduce the grease and dust deposited in the pipe and prevent it from entering the sewer.

2. Pipe dredging: If there is a dust problem in the sewer of the range hood, the pipe should be dredged in time. You can use dredging agent, pipeline trawl and other items to clean the pipeline, or you can use the services of professional cleaning companies to thoroughly clean the sediments.

3. replace the sewer filter: you can choose to install a sewer filter to prevent dust and sediment from entering the sewer. This method is simple to operate and relatively affordable, and it is a common solution.

4. install u-bend: stacking sand or fine stones at the u-bend of sewer pipes can help intercept dust and grease residues and reduce pipeline blockage.

In short, to solve the problem of dust entering the sewer of range hoods, we need to take active measures to clean the fume pipes and sewers in time to ensure the normal use of range hoods and the health and safety of the home environment.