Backward draft in the chimney: what to do and how to improve the situation

How pleasant it is to get warm on a cold winter evening by a warm stove or fireplace! Cracking logs, coming from the furnace, has a very relaxing effect on the human body. It becomes warm and easy on the heart.

What is a smoke draft?

A person who recently became the owner of his own house with stove heating, is interested if there is a return draft in the chimney, what to do. This phenomenon is noticed immediately and occurs in the area of the chimney. It is formed as a result of the fact that the heating and the chimney channel are not working properly. As it turns out, there are a lot of very different factors that lead to this phenomenon. In order to choose a way to deal with this problem, it is necessary to thoroughly understand this issue.

Reverse thrust is a stream of flue gases, not striving upwards, as any hot air jet is supposed to do, but into the room where the stove stands. The main reason for this phenomenon can rightly be considered as an indicator of the difference between the pressure created in the furnace, and the street. As a result, the flow is directed along the path of least resistance.

The formation of reverse thrust occurs when the flue gases, which are actually formed when the fuel burns, do not go through the pipe to the street, but move downwards, that is, into the house. Also, in parallel with the concept of reverse traction, there is such a phenomenon as its overturning. In this case, smoke also flows into the room. So, let's try to answer the question about what is the return thrust in the chimney, what to do, how to restore the system's working capacity.

Thrust Standards

A man can not but grieve that there is a reverse pull. What can be done - can be solved only by carefully understanding the origins of the problem. It is very important that the chimney channel work in full-fledged mode. In the event that any failure occurs, the fuel does not burn completely. This, in turn, leads to the accumulation of smoke in the furnace. It reaches a certain volume and after that begins to stand out in the free space, which is the room. This does not fit into any fire regulations and adversely affects the state of human health.

There is nothing good in the fact that the draft is excessive, as this leads to excessive heat losses. In view of this, the furnace becomes very hot, which can cause its deformation and even fire. Therefore, you need to carefully monitor the condition of the entire heating system. The average pressure in the chimney area should be 10-20 Pa.

Backward draft in the chimney: what to do?

Reasons for the appearance:

• Low chimney. This leads to a small difference in pressure. As a consequence, a very bad smoke draft or its complete absence.
• Incorrect installation design. This is an incorrect relationship between such parts of the heating system as the combustion chamber, the height, and the diameter of the chimney.
• Wind power, formed as a result of the fact that there is a taller structure nearby.
• Poor ventilation, as well as insufficient supply air.
• Atmospheric indicators.
• If above the level of the external chimney there is a ridge of the roof, then in case of a strong wind, a rollover may occur.
• Clogging the pipe with a wide variety of rubbish.

Only when it is known what caused the return thrust in the chimney, what to do and how to improve the operation of the stove - will be immediately clear.

Reverse Link Detection

In order to answer the questions about how strong the return thrust is in the chimney, what to do, the methods of struggle which are appropriate, it is necessary to initially determine the fact of its presence. Determine that there is a return thrust in the area of the chimney channel, you can use a special device - anemometer. Such diagnostics is the most accessible. It should be noted that the determination of the presence of reverse thrust is possible only if at the time of verification there is a sufficient flow of wind, the index of which exceeds the mark of 1 m / s. If its value is lower, then the definition is impossible. It is very bad when, according to the testimony, it is established that there is a return draft in the chimney. What to do to eliminate?

Since it is not always possible to use special devices, in this case the proven folk methods will come to the rescue. First of all, the definition is possible with the help of simple visual perception. If it is noticed that there is no smoke in the room, this is a direct proof that there is direct traction. Special attention should be paid to the color of the fire burning. If the flame is more predominantly white, we can talk about high traction. In addition to color, this is indicated by the sound that comes from the furnace. It is more like a rumble. The orange color of the flame indicates that there is no thrust. For the correct level of thrust, the golden color of the fire is characteristic.

When determining the thrust, the most ordinary matches or a piece of paper will come to the rescue. If a flame deviation is observed at the time of burning a match or a sheet of paper, then this indicates that there is a draft.

In the event that you need to determine the absence of smoke draft, you just need to look into the middle of the furnace. If there is a lot of smoke in the cavity, it means that there is no traction. It is necessary to treat this phenomenon with a high degree of responsibility, as this can lead to the fact that the gases begin to leave the furnace and accumulate in the room. If it is found that there is a return thrust in the chimney, what to do should be resolved as quickly as possible.

Installation of the deflector

If we were able to understand the main reasons, and it turned out that as a result of airflow deviations, there is a reverse pull, what to do with this, the deflector decides. This is a special device, the work of which is based on the aerodynamic effect. It as soon as possible reduces the level of pressure in the event that in the way of airflows there are some or other obstacles. High performance of this device is noted in strong winds.

Installing the stabilizer

Installation of the stabilizer is carried out in the cavity of the smoke channel. At the bottom of the body is a special hole, through which there is a free circulation of air. In view of the fact that the stabilizer has a special form of construction, it has the ability to fully control the air pressure in the pipe. The operation of this device is carried out together with a special sensor that controls the temperature of the exhaust combustion products. If suddenly the traction deteriorates, and as a result the smoke accumulates in the pipe, which leads to the heating of its walls, the sensor immediately fires.

Use of a rotary turbine

The rotary turbine will help if there is a return draft in the chimney. What to do and how to fix, it will help to solve. The work is carried out due to the use of wind energy generated in the turbine. It is installed directly on the top of the chimney. Due to the fact that the turbine constantly rotates in a certain direction, it dilates the air in the area of the smoke channel. But this is not the only function that this device does. It prevents particles of debris from getting inside. Despite such significant positive features, the rotary tube has its own drawback. The thing is that it continues to work continuously even during the end of the heating season, that is, in the summer. This, in turn, leads to the fact that in the area of the chimney there is a strong increase in the level of thrust.

What is the danger of improper operation of the heating system

A good and safe operating mode of the heating system directly depends on the level of the smoke draft. In the case of the appearance of the very first signs of the problem, it is necessary to carry out a check, and in case of detection of any malfunctions, it is necessary to eliminate them as soon as possible. In some cases, a bad draft leads to a carbon monoxide entering the room. As you know, it is very dangerous for human health and in some cases can even lead to death. Most of the existing faults can be eliminated with your own hands. If there is no experience or skills, it is better to seek the help of specialists in this field who will perform all the necessary work in the shortest possible time.

Reverse traction of temporary nature

In some cases, the reverse thrust is not a permanent, but rather a temporary phenomenon. We answered the question: "If there is a return draft in the chimney, what should I do?" Restoring the normal process will take very little time. Often, the main reason is the cooling of the furnace and chimney. The fact is that during this period of time, cold air accumulates in the cavity of the furnace, which is heavier than heated, it prevents the normal draft. Typically, smoke in a short time can completely fill the room. In such cases, the stabilizer of the thrust installed in the chimney cavity will help to get out of the situation.