What is the reason why the room stinks when I turn on the range hood when cooking? How to fix it?

During the working process of the range hood, a negative pressure environment will be formed near the panel of the hood. To put it bluntly, it is to drive the air in the room to achieve the purpose of preventing the fumes from spreading and sucking them away.

At this point, the air pressure throughout the room decreases. But the kitchen is not a vacuum environment, the air pressure here is reduced, and the air at the high pressure will naturally fill it. What about the high air pressure?

If you open the doors and windows, then the outside of the kitchen is a high-pressure environment. The air there will rush into the kitchen, maintaining pressure inside the kitchen. But if the doors and windows are closed, the outside air can only enter the kitchen through pipes such as the sewer - the air in the sewer has a foul smell, which is why the room smells when the hood is turned on.

Of course, from another point of view. If there is a foul smell in the room after turning on the hood, it proves at least two things:

1.The quality of the range hood is not bad, and the suction power is large enough. Only in this way can a sufficient negative pressure be formed to affect the pressure of the entire room. With this range hood, at least you don't have to worry about the smell of oil smoke overflowing.

2.The sealing of the doors and windows is good enough, otherwise a little air from the gaps in the doors and windows can fill the pressure difference in the room.

The best solution is to change the habit of using the hood: every time you use the hood, open the window in the kitchen. This can not only prevent the sewer from smelling, but also ensure that enough air enters, so as to avoid the pressure in the room being too low, which affects the use of the range hood.

However, some people have complained, especially in winter and summer, that the outdoor environment is harsh and there are no conditions for opening windows. At this time, we can improve this problem by choosing the pressure of the range hood.

There is a parameter on the range hood, called "air volume", which refers to the speed at which the range hood smokes. If the air volume is too large, the smoke exhaust effect will indeed be good, but it will also bring some drawbacks. As we said above, it causes the pressure in the room to be too low; and when the pressure is too low, it may affect the combustion of the gas stove.

Because the smoke exhaust pipe is very dirty, it causes the phenomenon of smell. We need to ask a professional person to clean the range hood, which can effectively solve this problem.

It may be because the cooking smoke pipe at home is connected to the exhaust pipe of the toilet, so the smoke from the range hood may run into the bathroom, which will make the home very smelly, you can close the bathroom door or open the window when using the range hood.

Because the air in the room is sucked by the range hood, the smell in the toilet or sewer escapes and smells foul. The best thing to do is to open the window for ventilation, or close the door to the toilet.

It may be that the pipe of the range hood is blocked, resulting in smoke running into the kitchen, which should be checked in time.

Why does the hood smell at home? This time I finally got it!

1. The toilet sewer is not tightly sealed, which is mainly reflected in the two aspects of floor drain and washbasin are not odor-proof. 2. It may be that the smoke exhaust pipe of the range smoke and the exhaust fan of the bathroom use a flue, resulting in no separation. 3. Because the bathroom is not installed with an anti-odor floor drain, when the range hood is working, the smell of the sewer will be pumped out, so the smell will be smelled.

Suggested treatment: 1. The owner can replace the sewer pipe and floor drain with good anti-odor effect. Finally, open the kitchen door slightly when cooking, so that ventilation is smooth.

Because the hood will suck up some of the oxygen in the kitchen, thus forming relative air pressure, the smell of the toilet in the owner's home will also "gush" into the kitchen. 2. Replace the floor drains in the washbasin, shower and washing machine near the area with an anti-odor type under the conditions that can be used. 3. The owner can also buy a one-way check valve, and then ask a professional maintenance person to install the one-way check valve in front of the ordinary three-way connection.

1. The main reason why the range hood smells at home is that the new house built now has a better sealing effect, and every time the range hood is opened, the range hood must need to extract a lot of air, but where does this large amount of air come from? The house is closed, which will form a strong negative pressure, which can only be extracted from various gaps in the house, and eventually the floor drain and the sewer pipe and the ventilation pipe of the bathroom cannot escape the relationship.

2. Solution: If the weather is not particularly cold, you can open the bathroom window a little bit to avoid negative pressure in the house.

3. You can also start with the anti-theft entrance door, if the door has a ventilation window, try to open the ventilation window. If not, there will be bolt holes in the door frame of the security door. This bolt hole is directly the same as in the external corridor, and it will not generate negative pressure in the house.

When the range hood is turned on, the smell in the bathroom is because the smoke exhaust pipe of the range hood and the exhaust fan of the bathroom are a flue. It is possible to replace all the water leaks in the hand basin, shower area, washing machine, etc. with an odor-proof type.

Odor-proof floor drains generally have water seal type and spring self-closing type. The water seal type generally has a relatively low sealing capacity, and the suction force exceeding the height of the water seal can destroy the water seal, causing the odor to continue to rise. The spring self-closing type has a better ability to seal Xun Bu's hand, and generally there will be no more odors, but the ability to go into the water will be reduced.

Causes and solutions:

1. If the kitchen will stink when the range hood is turned on, it may be because the smoke exhaust pipe of the kitchen range hood and the flue used by the exhaust fan at home are the same flue, that is to say, the owner is installed in the home with an ordinary tee. If you want to solve the problem, then you need to ask a professional maintenance person to come to help with the repair. Users only need to buy a one-way check valve, and then ask a professional maintenance person to come to the door to replace the water leakage installed in the front area of the ordinary three-way check valve with an anti-odor water leak, which can effectively prevent the odor from rising up and avoid odor at home.

2. This situation is caused by the sealing of doors and windows at home too tightly in winter. Range hood smoke extraction is a forced process of exhausting air. In this process, new air needs to be replenished, and if there is no air supplement, then the air pressure in the room will gradually tend to be negative.

When the air pressure inside is lower than the air pressure outside, the air is replenished to the space with low air pressure. It is for this reason that the air at higher pressure outside flows through all the pores to the interior to achieve pressure equilibrium. The same goes for sewers, when the gap in the sewer is enough for air to pass through, the air in it will also flow into the room, and the odor inside will also enter, so pay attention to ventilation.