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Anonymous users2024-01-23Hehe, there may be a way in your house.
I think there are two reasons for this, one is that you don't have a return elbow installed in the sewer to connect the indoor air with the sewer, and the other is that your home is tightly closed, so that the indoor and outdoor air can not be convection, when the range hood is turned on, the air that is discharged is supplemented by the gas in the sewer, as if the sewer is smoking.
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Anonymous users2024-01-22Is your home on the first floor? Isn't the sewer sealed with water? The lower end of your flue is connected to the sewer.
Only make a water seal, or reopen the lower end of the flue.
Under normal circumstances, the air outlet is not blocked, and the wind pressure is far from enough to enter the room from the sewer.
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Anonymous users2024-01-21It is estimated that there is a leak in the flue.
The bathroom vent is not equipped with a check valve, and the kitchen and bathroom share a ventilation shaft, causing the gas in the ventilation shaft to pour back into the bathroom, and it is much better to install a check valve.
The picture is a large stove used in rural areas, and the effect of using a ventilation fan is not good, so it is recommended to install a range hood. But it is not the kind of ordinary household, it should be installed similar to that used in the kitchen of a hotel, and the smoke hood is relatively large, which can completely cover the stove.
When the range hood is in use, if the doors and windows are wide open, the outdoor wind blows the smoke directly, and the smoke escapes everywhere and the range hood cannot be sucked in; If the doors and windows are tightly closed and the kitchen is airtight, the kitchen will cause a vacuum, the suction power of the range hood will be smaller, and the noise will be larger. Lianbao reminds that the normal use environment of the range hood should be that the indoor airflow is relatively stable, and the oil smoke is not disturbed by the wind, and the effect is best in the inhalation machine smoothly. I asked the people who benefited from it, and said that the general practice is that the doors and windows should be opened with a crack, and it is better to blow directly into the oil smoke without wind.
When you turn on the smoke extractor, you can open the window of the balcony to form air convection, which can eliminate or alleviate the situation you said.
If there is a check valve in the fume passage to prevent the fume from backfilling, there should be no need to open the window. If you didn't install a check valve when you renovated it, it was best to find a professional company to install it, otherwise there would be a greasy layer in the kitchen. Because, similar to you living in the fume tunnel of your building, it is not good for the furniture, and it is not good for the human body, because the greasy oil in the fume pipe has a lot of carcinogens!