What is the reason why the wind of the range hood blows to the stove fire?

1. The joint between pipeline and flue is not tightly sealed. When the range hood works, the pumped air returns to the ceiling from the gap and then blows down along the gap, because the wind pressure needs to be balanced. 2. It may be that after the range hood is turned on, due to the change of internal and external pressure difference, a strong wind blows from the window or door next to it and blows to the stove fire. There is turbulence in the wind direction of the exhaust system, which is originally suction. In the exhaust duct, the wind direction is changed inward by the external strong wind, and after the external strong wind is removed, the wind wheel in the range hood still cannot correct the wind direction in time, and is still in a turbulent state and still blows outward. Suggested solution: 1. If the pipeline leaks on the stove, find the place where the pipeline leaks, and seal it tightly with tape and other items. 2. If the air leaked from the window or door blows on the stove, the long window or Nagato should also be sealed with tape and other items. If the weather is hot, you can open the doors and windows a little wider to avoid small gaps and increase the wind. 3, check whether there is turbulence in the exhaust system, adjust the impeller steering.