What to do about flue odor, kitchen flue odor?

Here's how to deal with it:

1. Pipeline sealing. The smoke exhaust pipe and the common flue are not properly sealed. Solution: Reseal the smoke exhaust pipe and the common flue.

2. The check valve is greasy. Due to the accumulation of greasy, the movement of the flap is limited, or even not opened, and the oil smoke cannot be discharged. Solution: Replace the check valve or clean the check valve.

3. Exhaust hose. The exhaust hose of the range hood is not tightly connected at both ends, falling off, and breaking will cause air leakage and odor. Solution: Change the exhaust hose or connect the exhaust hose.

4. Foreign bodies and length of flue pipes. During installation, foreign objects must not be dropped into the flue, so as not to affect the later use. Pay attention to the length of the pipe when installing.

1. Cause of failure: the smoke exhaust pipe and the public flue are not well sealed;

Solution: Reseal the smoke exhaust pipe and the common flue.

2. Cause of failure: 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 opened, and the fume cannot be discharged;

Solution: Replace the check valve or clean the check valve.

3. Cause of failure: The exhaust hose of the range hood is not tightly connected, falling off and breaking, which will cause air leakage and odor;

Solution: Change the exhaust hose or connect the exhaust hose.

First of all, let me tell you a secret: the lower smoke exhaust method of the integrated stove is contradictory to the flue structure on our current general buildings! The current flue is divided into two parts, one is the public flue, and the other is the residential flue, which is separated in the middle.

The opening of the residential flue is in the upper part, and then it goes up a section and is separated below the opening of the residential room on the upper floor, and then the opening is in the partition between the two flues to enter the common flue. That is to say, if you want to use an integrated stove, the opening of your house should be hit just above the flue downstairs of your house, or they will hit you on the public flue (which is slightly better), of course, as soon as they turn on the range hood, it will go directly to your home! The solution is to install a check (inverse) valve at the flue opening, but this does not guarantee that it is 100% odor-free, but it is much better than not installing it.

It seems to be more expensive to sell it in Yantai, so I bought it online. Although I didn't use an integrated stove, I installed one so that there was no smell at home. For more details, please see the article here.

There is no good way to do this, now most of the community is a flue, as long as there is a cooking will be smelly, if the smell is very strong can not bear it, it is recommended that you turn on the environmental protection stove when you eat, and my family is too, all turn on the range hood.

1. A return valve must be installed at the exit of the public flue in the kitchen at home.

2. There should also be a return valve on the range hood.

3. A tightly closed and open-place check valve can be installed at the air outlet of the range hood to eliminate the backfilling of oil smoke and poor smoke exhaust.

At that time, a few days after the installation, I asked the installer to come and re-do it, only to beat the styrofoam, it seems that there is no other way, but it is tasteless. Why is it smelling again now?

Our situation is the same, my colleague helped me analyze, saying that it was too close to the exhaust outlet downstairs, maybe the air from the cooking exhaust below came over to see if there was any good way to encourage it.

1. A better check valve can be installed.

A good check valve should be an upflow check valve that does not flow downwards after the flue gas passes through the check valve, but should flow straight up. In general, the check valve of the range hood.

The effect is not obvious, and installing a check valve in the flue can protect the range hood, so that the smoke in the flue will not go to the pipe and the range hood.

Inner infusion. 2. Another closed valve can be installed at the flue mouth, and the smoke backflow can be eliminated under the joint action of the smoke machine valve and this valve. Generally, the oil smoke in the home will first go to the auxiliary flue, and then enter the main flue through the hole in the partition, so as to ensure that the oil smoke of each household is isolated.

However, if the secondary flue is directly connected to the main flue, the pressure will be too low, resulting in back-up or cross-smoke.

3. If the exhaust hose of the range hood is not tightly connected, falls off, or breaks and causes air leakage and odor, you can change the exhaust hose or connect the exhaust hose.

4. If the smoke exhaust pipe and the public flue are not well sealed, if the smoke pipe is under the ceiling, you can consider wrapping it tightly with transparent tape or using glass glue.

Sealant sealing. If the smoke machine pipe is above the ceiling, there are two cases, if it is an integrated ceiling.

Remove a small piece, and then seal it with glass glue, if it is a gusset ceiling, then you have to remove a part of the ceiling before gluing.

Decoration Da Cui explained the details of kitchen decoration and the installation of flue check valve, hoping to help you in decoration.

Solution: This reason is more difficult to solve, and it is better to find a property.

1. Cause of failure: the smoke exhaust pipe and the public flue are not well sealed;

Solution: Reseal the smoke exhaust pipe and the common flue.

2. Cause of failure: 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 opened, and the fume cannot be discharged;

Solution: Replace the check valve or clean the check valve.

3. Cause of failure: The exhaust hose of the range hood is not tightly connected, falling off and breaking, which will cause air leakage and odor;

Solution: Change the exhaust hose or connect the exhaust hose.

With the improvement of everyone's living standards, the kitchen environment is also improving day by day, but there has always been a problem that has always plagued many users, that is, the aftertaste phenomenon of the kitchen, which is particularly unpleasant!

1. PrincipleBefore solving this problem, let's take a look at the common flue schematic diagram through the smoking function of the range hood, which sucks up the fumes from cooking at home and discharges them through the flue.

2. There is a reason for the return of the smellThere are 2 common causes:

When our range hood is not turned on, there is no airflow blowing out at this time, if the pressure outside is greater than that indoors, it is easy to cause the odor in the flue to be discharged.

Another situation is that the flue is blocked, and the flue can only be dealt with at this time.

2. SolutionGenerally, when the range hood is installed conventionally, a fume check valve will be installed in the flue, as shown in the figure, the check valve is a culvert that opens in one direction, and a small wind can blow it outward, but it cannot be opened inward, so as to stop the return of fumes and odors.

The smell of flue not only greatly destroys the warm atmosphere of our home, but also has a negative impact on our health.

The causes of flue odor need to be investigated: Possible causes: 1. Blocked flue pipeline; 2. There is a problem with the range hood; 3. The fan of the range hood is faulty; It is necessary to find the right cause and prescribe the right medicine to completely solve it;

So how to deal with the anti-odor of the kitchen flue, let's briefly introduce it below.

1: Because the smoke machine comes with a check valve and the closed valve installed at the flue mouth adopts the structure of relying on the wind power of the smoke machine to open, the self-weight of the valve plate or the installation of a closing spring. In order to ensure that the wind power of the smoke machine can blow open the valve, its weight or spring force can not be too large, so the valve closing force is small, and the valve is not in place after being adhered to the oil scale, and the consequence of not opening is that the exhaust is not smooth and the air volume is attenuated; The consequence of not being in place is that a large amount of oil smoke backfill occurs, which is a common phenomenon of oil smoke backflow.

Two: the smoke machine comes with a check valve in the valve plate and the valve body between the valve plate and leave an annular seam, when the neighbor opens the smoke machine (sewage), the local pressure in the common flue increases, the sewage gas is poured from this ring seam nearby, and the old flue is poured back for this reason.

Three: When the appropriate wind speed passes through the common flue, an appropriate amount of negative pressure will be generated at the interface of the smoke machine, and no oil smoke backflow will occur. However, when the wind speed is too large, the negative pressure generated will be too large to suck open the valve, and the valve after sucking open cannot be effectively closed if it is adhered by oil scale, and the oil smoke backflow occurs when the negative pressure disappears.

Because the flue design specification is determined by 10 cubic meters, and now the air volume of the flue is mostly more than this value or even 17 cubic meters, and the phenomenon of oil smoke backflow caused by high air volume is gradually increasing.

Four: when the smoke exhaust pressure and air volume of the upstairs hood are large, it will produce wind resistance in the flue, block the rise of the oil smoke downstairs, and increase the local pressure of the downstairs flue.

The above matters related to the anti-odor of the kitchen flue are introduced here, the oil smoke backfill always occurs when the hood is not used, and the air volume of the large and small air volume hood is zero in the shutdown state, so the air volume of the hood is not related to the oil smoke backfill.

The odor of the range hood may be that the smoke exhaust pipe and flue are not well sealed, if the smoke exhaust pipe is under the ceiling, it can be sealed with adhesive tape or sealant. If it is above the ceiling, the part that blocks the smoke pipe should be removed and glued with glass glue. It is also possible that the two sides of the exhaust hose are not tightly connected, resulting in detachment or breakage and making it smelly, so it is necessary to replace an exhaust pipe.

Directly punch holes and force drainage, and the old pipes are closed.

Use a flue check valve.

2. Flue check valve: The flue check valve is a safety guard in the family, which can effectively prevent the toxic exhaust gas and oil fumes discharged from other people's homes in the public flue from backing up into the home.

Causes and solutions of oil smoke backflow and poor smoke exhaust.

The range hood itself is equipped with a check valve, and the entry account of the common flue is generally equipped with a check valve, although there are two check valves, but the oil smoke backflow will occur after a period of use; And accompanied by poor smoke exhaust, what is the reason for this? The reason is very simple, the valve is not closed tightly and cannot be opened properly:

Reason 1: Most of the check valves on the range hood and the check valves installed in the account use the structure of the wind power opening of the range hood and the self-weight closing of the valve, and a small part of the spring is installed on the valve to help the valve close. In order to ensure that the wind power of the range hood can blow open the check valve, the weight of the valve plate or the spring force should not be too large, so the closing force of the valve is small and it is easy to be adhered to oil scale.

After the valve plate is adhered to the check valve, the opening and closing are not in place, and the consequence of not opening in place is that the exhaust is not smooth and the air volume is attenuated; The consequence of not being able to close it properly is that a large amount of oil smoke backfills will occur.

Reason 2: The check valve of most range hoods is equipped with an annular gap between the valve plate and the valve body, the purpose is to reduce the contact area between the valve plate and the valve body, reduce the adhesion force of the oil scale to the valve plate, and ensure that the wind force of the range hood can blow the valve plate. If the annular seam is too large, when the neighbor turns on the range hood (sewage discharge), the local pressure in the shared flue increases, and the sewage gas is poured from this annular seam nearby.

Reason 3: The new building adopts the main and auxiliary common flue, and when the pressure of the main air duct rises to a certain extent, the auxiliary flue connected to the range hood is in a negative pressure state, and the oil smoke backflow will not occur. However, if the negative pressure is too large, the valve plate of the check valve will be sucked open, and the valve plate after suction can not be effectively closed if it is adhered to the oil scale, and when the pressure of the main flue decreases, the negative pressure of the auxiliary flue disappears, and the oil smoke backflow occurs.

The reason for the poor smoke exhaust is: the oil scale accumulated on the check valve increases the weight of the valve plate, and the opening resistance of the check valve increases after the spring is installed on the valve plate, and the range hood consumes part of the air volume to overcome these resistances, causing the exhaust air volume to decay and the smoke exhaust is not smooth.

Solution: understand the reason for the smoke backflow and poor smoke exhaust, the solution is simple, as long as the exhaust end of the range hood is installed without the wind power of the range hood to open, close tightly, open in place check valve can eliminate the smoke backfill and smoke exhaust is not smooth. You can search for a variety of "electric fume check valves" on the Internet, which are opened by motors or electromagnets, which can effectively eliminate the backflow of fumes.

In particular, there is an "electric oil smoke check valve" that can be installed on the air outlet of the range hood that has been installed and used, without destroying or opening the ceiling, which is a good choice for families who are fed up with oil smoke backfilling.

There are two semicircular plastic plates at the top of the range hood and the smoke pipe connection, the reason for the smoke return should be that the blades are not closed tightly, there are gaps, when the range hood is used for a period of time, the leaves will naturally stick to the oil stains, and the blades can not be restored to their original position after opening, then the gaps inside are larger, so the phenomenon of smoke and smell will be more serious. That's when it's time to clean the hood! When reinstalling, pay attention to check whether the blade is open and closed tightly, and replace it in time if the blade is damaged.

The reason for the aftertaste of the flue is the installation of a check valve, and the second reason is also the most important reason for the sealing of the smoke pipe and flue.

The range hood itself comes with a check valve, and it is better to install one (the oil smoke can sometimes cause the check valve to be inflexible and can be cleaned); The most important thing is to seal the combination of the smoke pipe and the flue with structural adhesive (the same is true for the bathroom air duct interface). Try!

Check valves are generally sold in large hardware markets, about 5 fast to 8 yuan. However, if you install it, please ask the after-sales service to help install it, and if you think you are professional enough, you can also try it.