In the process of use, the range hood is often affected by oil smoke. In case of heavy rain, the range hood may drip. Usually this is caused by the internal structure of the range hood pipeline.

When installing a range hood, the exhaust pipe is generally installed on the roof, and the kitchen fume is discharged to the outside through the extension pipe. However, in heavy rain, the smoke exhaust pipeline will be attacked by rain, which will lead to a sudden drop in its internal temperature, thus causing the oil smoke to condense into water droplets in the smoke exhaust pipeline. When the moisture in the fume hood pipe discharged to the roof reaches a certain level, it will drip into the kitchen through the small holes in the smoke exhaust pipe.

Another reason is that the exhaust pipe of the range hood is improperly installed. If the smoke exhaust pipe is improperly tilted and the pipeline interface is improperly sealed, especially at the bend above the passage, water may be formed due to gravity, and finally it cannot be completely discharged, resulting in dripping of the range hood.

Therefore, when using the range hood, in case of heavy rain, it is suggested to check the backflow prevention device of the range hood in time before cooking to confirm that there is no water accumulation or water leakage in the smoke exhaust pipe to avoid dripping and keep the kitchen environment clean and hygienic.