Why does the toilet smell when you turn on the hand hood

When the range hood is turned on in the kitchen, the air in the kitchen space is quickly sucked away, and the air in the kitchen will be replenished from the adjacent space after being extracted, and the bathroom has no windows. Therefore, if the floor drain does not have an anti-odor effect or the anti-odor effect is not good, it is easy to have a sewer odor.

The exhaust check valve of the range hood, the two semicircular movable baffles of the check valve, open when exhausting, and close when stopping, but due to the accumulation of greasy, the activity of the baffle is limited, or even not open, and the smoke cannot be discharged, so the user changes a check valve or cleans the check valve.

Answer: The first cause of the smell of the open range hood sewer may be because the reverse valve of the range hood is damaged. If there is a problem with the reverse valve of the range hood, such as the damage of the reverse valve, the oil smoke or the external odor will flow backwards, resulting in the problem of anti-odor in the sewer of the range hood.

The second reason for the smell of the open range hood sewer may be because the reverse valve of the range hood is not installed. Many people ignore the reverse valve during installation, in fact, the reverse valve plays a great role, the reverse valve of the range hood is used to prevent the backflow of odor fumes, if this problem occurs, it is recommended to install the reverse valve in time.

The third reason for the smell of the exhaust of the range hood may be caused by the lack of odor prevention devices installed in the house. The anti-odor device is that there is a trap in the drain pipe of the floor drain, so that the smell will not be discharged through the pipe, if there is no trap at home, there will be an odor spread along the pipe, resulting in the problem of anti-odor in the sewer of the range hood, it is recommended to find a professional to evaluate and repair.

Because when you turn on the range hood, it is exhausting air to the outside, and the range hood is equivalent to an exhaust fan. When there is no air inlet in the room, when you turn on the range hood, it is equivalent to vacuuming the room, and then the air in the sewer pipe in the toilet is sucked out (because the toilet sewer pipe is empty), so when the range hood is turned on, the toilet will smell back.

Check whether the check valve of the air outlet of the smoke machine cannot be closed normally, and if it is normal, consider whether the flue is blocked.

It would be nice to have a slight slit in the window.

My range hood is Haier European style, and my parents' home is Haier Chinese style, both of which are good.

Mr. Wheat and Black Soil:

Look at your historical answers, Haier is very rubbish, you use nearly ten models of Haier's range hoods in a year, if it's not Haier too garbage, or you have a lot of money. The range hood was replaced with a new one in less than a month.

Admire! Admire!

It is estimated that the problem of the landlord is caused by the decoration company stringing together the air duct and public flue of the range hood and the bathroom during the renovation. It is not excluded that the kind of problems mentioned by Li Zeguang are generally not very common.