When the exhaust pipe of the range hood does not smoke, it is likely to cause poor air quality in the kitchen, and even make the oil fume accumulate in the air, which will affect family health. The following are some methods that may cause the exhaust pipe of the range hood not to smoke and how to solve it:

1. The fan of the range hood does not vibrate. This may be because some dust and oil fume accumulate in the fan, which leads to its speed reduction. You can turn off the fan before cleaning it and wipe it with a vacuum cleaner or a clean cloth.

2. The exhaust duct is blocked. If the exhaust pipe is blocked, it will not be able to discharge the smoke from the kitchen. You can use a needle, hook or pipe cleaner with a smaller diameter to clean the inside of the pipe.

3. The air outlet is blocked. The kitchen vent may be covered with some sundries, such as paper towels or other small objects. Just cleaning the exhaust port can solve the problem.

4. The speed of the ventilator fan is too low or too high. If the fan speed is too low, it will not be able to exhaust enough air. If the fan speed is too high, it will suddenly stop working. You can turn on the range hood and change its speed setting.

5. The range hood is improperly installed. When you install a range hood, make sure it is installed near the kitchen exhaust port to minimize the length of the exhaust duct.

In short, cleaning the range hood regularly, paying attention to pipeline maintenance and ensuring correct installation are helpful to solve the problem that the exhaust pipe of the range hood does not smoke.