Buleryan stove reviews and video disadvantages

The Buleryan heating system is an all-welded steel structure, on the sides of which there are multiple pipes. Cold air comes from the floor, it penetrates through the lower pipe pipes and heats up. And then it moves through the pipes pressed against the firebox of the heating device.

Already heated air comes out of the upper pipes, which is evenly distributed throughout the room. Already 15 minutes after lighting the stove, the air reaches a temperature of 120 °C.

Reviews about the main benefits

User reviews about the Buleryan stove will allow you to understand what the described design is. It is quite compact, but can easily cope with heating a room up to 100 m2. If you purchase equipment of greater power, it will be able to heat a room up to 400 m2. The period between stacking firewood reaches 12 hours. According to users, during operation you will only have to add firewood to the firebox several times a day so that the stove maintains a constant temperature in the room.

If you want to purchase a Buleryan heating stove, you should definitely read the reviews about it. From them you can find out that firewood burns out at a certain speed, which is affected by the set power. The type of wood also influences this. In just 3 hours after the device starts operating, the room warms up and the air in it reaches an acceptable temperature.

If the area is large, it is recommended to install several furnaces or purchase one unit, the size of which will satisfy your requirements. Such a stove, according to users, is not only convenient, but also versatile. It does not create smoke or soot in the room, saves firewood, and also has a convenient door for storing firewood, which simplifies operation.

Consumer reviews about the Buleryan Classic (type 00) stove

The Buleryan Classic stove has good reviews. Many people liked this model because it is great for small cottages. The power of the furnace is 6 kW. According to the owners, it works well on briquettes, firewood, and wood waste. The efficiency is 75%.

Using one load of firewood, the stove can heat the dacha for 8 hours. If you use wood waste, you can increase this time to 12 hours. Overall, the body of the device is durable and has an interesting design. Also, these Buleryan stoves received good reviews from operators due to their ease of operation. Another advantage is the compact size of the model.

Main disadvantages

If you decide to install a Buleryan stove in the garage, experts recommend reading reviews about it. Among them, we should highlight the ability of the equipment to operate exclusively using firewood. It should also be mentioned that a large volume of generator gases does not burn, flying out into the chimney.

The firewood does not burn completely, the stove produces smoke, and the soot goes into the chimney pipe. This entails the need to extend the pipe 3 m from the height of the furnace. All these are additional costs, to which must be added the fact that the pipe needs thermal insulation. It does not matter whether the structure is made of metal or brick.

Reviews of the Buleryan long-burning stove also indicate that condensation from water, soot and tar accumulates in the chimney during operation. This happens because the fuel does not burn completely. The pipe cokes, and during kindling an unpleasant odor is formed, which is especially important after a long period of inactivity.

Consumers point out another disadvantage, which is that dust burns on the hot metal of the structure. This does not improve the atmosphere of the premises. The operating principle of the heating device leads to such consequences: the design is designed for heat transfer from the surface. It is not so easy to ensure long combustion and maximum heat transfer on one tab. To do this, you will have to master the skills of adjusting the damper. Reviews of the Buleryan dacha stove indicate that smoldering combustion causes many side effects.

Reviews from experts about the Buleryan Classic (type 00) stove

These Buleryan stoves have received good reviews from experts. Many of them, agreeing with the opinions of consumers, claim that the compactness of the device is an undoubted advantage of the model. Its height is 710 mm, width 490 mm, and depth only 680 mm, and all this with a weight of 65 kg. The chimney diameter, in turn, is standard - 120 mm. The oven body is made of very high quality. It is made of durable steel grade “08KP”. The pipes of the device have the correct shape and are produced using special equipment.

In this model their diameter is only 57 mm. Thanks to this, the generated heat is retained in the system for a long time. The welding on the furnace body is also done with high quality and its traces are almost invisible. This ensures a good seal. Also, the stove for the dacha (“Buleryan”) has positive reviews due to the presence of a convenient loading chamber. It has a large volume and allows you to quickly and comfortably fill it with fuel. At the same time, the door opens wide and closes easily.

Reviews about the analogue of "Buleryan"

When you have read the reviews about the Buleryan heating stove, it’s time to study Breneran. This equipment is an analogue of a convection device and was developed by Professor Butakov. The unit is identical to the Buleryan, but the latter is the fruit of German developments, while the Breneran was first released in Russia.

The design differs from the Buleryan in the large cross-section of air pipes and their impressive number. They are hidden in the housing, and the air intake occurs at a right angle. According to users, the case is made in the shape of a parallelepiped. The chimney is introduced into the upper plane.

For ash, the design has a built-in drawer, the system is complemented by a grate. It is the chimney entry point that makes using the stove not very convenient. When changing the position of the valve on a pipe, you can easily get burned on the top of the body or the base of the pipe. As consumers emphasize, the rotary damper does not have a lock, and when you try to set the blower yourself, it moves under the weight of the handle.

In the stove, the wood burns almost completely, leaving only a minimal amount of it. According to consumers, defects can be found in Russian-made convection ovens; they are expressed in the absence of elements, as well as poorly executed seams. If you read reviews about the Buleryan long-burning wood-burning stove, you will be able to understand that it does not have such shortcomings. The smallest models of units cost approximately 9,000 rubles.

Reviews about the features of using Buleryan in a residential building

For temporary residences and country houses, Buleryan is the ideal solution. However, many consumers, in their words, doubt whether it is worth installing such equipment in residential premises. Here the opinions of buyers differ, so it is worth taking a more serious approach to studying this issue.

After reading reviews about the Buleryan stove, you can understand that such an installation can have a negative impact on the healthy atmosphere at home. With a portion of air, ordinary dust is drawn into the structure, which first heats up and then begins to burn. Thermal decomposition does not require too high a temperature. Buyers emphasize that combustion products of dust particles are present in the air and can have a negative impact.

In order to get out of this situation, you need to purchase “Buleryan” and a regular stove. The first will heat the house, and the second will maintain a constant temperature. Experts emphasize that if the Buleryan is positioned correctly and the basic rules and frequency are observed, it is permissible to use such an installation in a residential building.

Reviews about use

You will be happy with your stove if you are careful when using it. Manufacturers claim that the described design is universal. Sometimes it is even compared to a solid fuel boiler. However, this belief is not entirely true.

The best fuel for a stove is wood. It is recommended to use non-resinous rocks. This should include:

Pallets and briquettes are excellent. According to consumers, kindling is best done with logs, but briquettes are perfect for the combustion process. Do not use flammable substances when igniting. Reviews about the Buleryan stove say that before laying firewood, it is recommended to dry it on the stove, then its combustion will be more efficient.

The above-mentioned period of operation on one load of fuel will be relevant only when the furnace is fully loaded. Do not make the chimney pipe shorter than recommended. In order to ensure successful combustion, good draft is necessary, which is only possible with a total chimney height of 5 m.

Consumers emphasize that the pipe should be assembled against, and not in the direction of, the movement of gases. This will prevent resin from getting on the floor, which flows out of the furnace openings. If the chimney is installed correctly, the resins will return and burn. Owners of private houses who successfully use Buleryan note that you should check the smoker twice a year. This will eliminate problems with heating equipment.

New model of the stove “Buleryan MAXI (type 00)”

The “Buleryan Classic” stove has good reviews. Many people liked this model because it is great for small cottages. The power of the furnace is 6 kW. According to the owners, it works well on briquettes, firewood, and wood waste. The efficiency is 75%.

Using one load of firewood, the stove can heat the dacha for 8 hours. If you use wood waste, you can increase this time to 12 hours. Overall, the body of the device is durable and has an interesting design. Also, these “Buleryan” stoves received good reviews from operators due to their ease of operation. Another advantage is the compact size of the model.

These “Buleryan” stoves have earned good reviews among experts. Many of them, agreeing with the opinions of consumers, claim that the compactness of the device is an undoubted advantage of the model. Its height is 710 mm, width 490 mm, and depth only 680 mm, and all this with a weight of 65 kg. The chimney diameter, in turn, is standard – 120 mm.

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The “Buleryan Country” stove has earned positive reviews. Buyers liked this model because of the loading chamber. So, it has great depth and allows you to store a lot of fuel. As a rule, in most cases coal or ordinary firewood is used. Additionally, the stove can operate on bark, peat or wood chips. The productivity factor in this case will be 75%. One bookmark provides warmth in the dacha for 8 hours.

Thus, you need to load fuel approximately twice a day. Power control is done manually. The regulator is located in a convenient location and is easy to adjust. Also, “Buleryan” (heating) stoves received reviews for their compactness. The height of the model is 710 mm, width – 490 mm, and depth – 680 mm.

These “Buleryan” stoves have different reviews among experts. Some of them praised this model for the build quality of the case. It is made from thick sheet of steel. The chimney outlet is also made of very high quality. Additionally, many noted pipe welding on the positive side. In general, all their bends have the correct shape.

Thus, there are no places on the stove where the pipe narrows (the diameter is the same along the entire length). Thanks to this, productivity increases significantly. Using a two-phase combustion system, the stove is capable of heating a 40-square-meter cottage. m. with a ceiling height of no more than 2.5 meters.

Reviews of the Buleryan MAXI stove are different. Many buyers praise this model for its performance and efficiency. Unlike previous models, this oven has a power of as much as 7 kW. This is quite enough to heat a 125 cubic meter cottage. m. At the same time, the efficiency is at the level of 75%.

At the same time, the depth of the firebox is significant, and up to 6 kg of wood waste can be placed at a time. As a result, the temperature will remain stable for 7 hours. Adjusting the power is very simple and even a beginner can handle it. The oven is also easy to install and will not cause any problems. According to the owners of these devices, given the low cost of this model, it is perfect for almost any garden.

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The Buleryan Country stove received good reviews from buyers. This model stands out among others for its power. This figure is at the level of 11 kW. Thanks to this, you can heat a room with a volume of 200 cubic meters. m. Thus, this model is only suitable for very large dachas. Its dimensions are also not small, as is its power. So, the height is 845 mm, the width is 560 mm, and the depth is 810 mm. At the same time, the model weighs 90 kg.

In turn, the size of the chimney is standard: its diameter is 120 mm. In general, productivity is also at the level of 75%. The stand for installing the stove is not included in the package, which upsets buyers a little. However, it can be ordered separately. In this case, you have the opportunity to choose a color to suit your taste.

Reviews about installation features

The Buleryan 100 stove, reviews of which you could read above, according to consumers, should be installed at some distance from flammable objects and materials. The distance should be 1 m. If the surfaces are covered with plaster, then this parameter can be reduced to 75 cm.

“Buleryan” is usually installed on a pedestal, which acts as decoration and serves as a functional element. Inside, consumers advise making a niche for firewood. Usually the base is made of piles.

Reviews about cleaning features

After reading the reviews and disadvantages of the Buleryan stove, you can decide whether you should purchase such equipment for your garden or home. But if you have already made your choice, then you need to learn more about how cleaning is carried out. No matter how high-quality heating equipment is, it requires preventive maintenance from time to time. "Buleryan" will begin to show signs of contamination over time. According to consumers, they are expressed as follows:

lack of traction;
deterioration of melting;
Difficulty closing the gate.

For cleaning, you can use one of several technologies. The main thing is that it is safe. Reviews and disadvantages of the Buleryan stove indicate that such equipment can become a source of increased danger. Consumers do not recommend using the so popular burning cleaning method. This method is dangerous, although effective. Some daredevils decide to take this extreme move.

Its essence is to heat the pipe to a temperature where the metal turns red. Under such conditions, the resin simply burns out, and the chimney is cleaned. Cleaning, according to stove buyers, can also be done mechanically. To do this, a special rod is used, with which you need to get into the pipe from the roof.

The length of the chimney above the surface should be approximately 3 m, so this approach is no less dangerous without the use of insurance. In winter, such manipulations should not be carried out. After reading the owner reviews about the Buleryan stove, you will choose another method for yourself - through a glass. If the smoker is thoroughly clogged, and it is impossible to clean it from above, then you can knock on the pipe. However, some of the resin will still remain in place.

The smoker is sometimes cleaned from the inside, although this option is quite complicated. From scrap materials you should make something like a folding meter with a ruff at the end. You can use an aluminum angle or pipe. The design should be quite light. The height of the pipe is decent, and if the device is heavy, then cleaning, according to the owners of Buleryan, will be quite difficult.

It is more economical and easier to use a rigid but flexible wire or cable. Its end must be rolled into a ring along the diameter of the pipe and the chimney must be cleaned through the condensate glass. According to homeowners where Buleryan is installed, this procedure has one drawback. It is expressed in the fact that a lot of dirt is formed in the process, but you have to spend no more than an hour on cleaning.

Reviews of "Buleryan" with a water jacket

Reviews from owners about the Buleryan stove make it clear that a design with a water circuit can be found on sale. Using such an installation, rooms are heated due to active circulation in heat exchangers. Such a stove, according to buyers, is an unusual and at the same time simple device. The body is cylindrical and consists of two levels. It resembles an ordinary barrel.

Reviews of the Buleryan stove make it clear that the lower level of the structure is the firebox, which is necessary for pre-ignition and raising the temperature to the level of the combustion chamber. The upper compartment is necessary for burning wood gas. The main task of the furnace is to heat large volumes of water. According to buyers, the device has elements that distribute energy for heating water and heating.

Expert opinion about the Buleryan Country stove (type 01)

This potbelly stove “Buleryan” has earned good reviews from experts. Many experts believe that a furnace power of 11 kW is enough to heat a room of 200 cubic meters. m. At the same time, they agree with buyers that the dimensions of this model are very large.

Among other things, many noted the quality of manufacturing of the heat exchange pipes. They all fit tightly, and there are practically no traces of welding visible. The bending of the metal itself is carried out in compliance with all requirements. In this case, no deformation was detected on the inner surface. Additionally, many appreciated the performance of the secondary camera. Her chimney outlet is properly shaped and works properly.

At the same time, the blower has a good diameter. Experts also highlighted the design of the rear panel, which consists of two plates. Considering all of the above, Buleryan heating receives only good reviews from experts.

Convection oven Buleryan

Buleryan is a solid fuel stove that heats the room using the convection principle. The roots of this stove, analogues of which are made everywhere today, go back to simple Canadian lumberjacks. But the license for the stoves for this project belongs to Germany . And in the Russian open spaces there is an analogue, manufactured under a German license - “Breneran” from JSC “Laotherm”.

Furnace design

Outwardly, one can note the similarity of Buleryan to a potbelly stove, but it has great potential for heating a room. It is a steel barrel that has a two-tier firebox, which is surrounded by 7 or more air pipes. Also, the design has everything that other stoves have - a stove door, an air supply regulator and a smoke damper, but there is no tray for cleaning ash.

High efficiency is due to three heat transfer methods:

Buleryan is a device that combines three functions at once - the furnace itself, the heater and the gas generator.

Principle of operation

The operation of the Buleryan stove is based on the principles of smoldering wood in the lower combustion chamber, followed by the release of gases. They are called generator gases because, when burned, they are capable of generating a lot of additional heat.

These furnaces cannot be called a unit that “squeezes out” all the potential energy from the generator gases. To do this, there must be a special catalyst and a pressurized air supply, and in addition, the temperature is much higher than that given by ordinary Buleryan.

Buleryan works in two modes:

Kindling, when a large supply of air to the burning wood allows one to reach a high temperature, quickly warming up the room. It takes half an hour or more;
Gasification, when the firebox is filled to the top with firewood, the door is closed and the damper is set for minimal air supply. With a small amount of oxygen, firewood does not burn, but smolders, which prolongs combustion to 10-12 hours on one stack.

Important! Buleryan delivers the promised efficiency only when using dry wood material, which emits a lot of generator gases when burned.

Positive and negative aspects of work

To fully evaluate the Buleryan stove, let’s pay attention to its positive and negative qualities.

Advantages of the Buleryan stove

From what was written earlier, some undeniable advantages of the operation of this furnace are already visible, but we will group all the characteristics that speak in favor of Buleryan:

High efficiency ≈ 70%;
Economical fuel consumption;
Easy to install and use;
Quick heating of the room;
Possibility of transporting hot air to other rooms (even on different floors) through air vents;
Uniform heating of the room due to convection;
The burning time of one load of fuel is ≈ 10-12 hours.

Disadvantages of the Buleryan stove

Now about those arguments that can be attributed to the negative aspects of the furnace operation:

The original Buleryan stove and its analogues are designed to operate only on wood;
Most of the generator gases, unfortunately, do not burn and fly out into the chimney;
Due to incomplete combustion of wood and gases, the stove produces smoke, and this soot exits into the chimney pipe. Therefore, it is recommended to extend the pipe 3 meters from the height of the stove. These are additional costs, and you need to take into account the fact that the pipe must be insulated, regardless of what it is made of - brick or metal;
Incomplete combustion of fuel also accumulates condensation of tar, soot and water in the chimney. This cokes the pipe and gives an unpleasant odor during kindling after a long period of inactivity;
The design of the furnace is designed for heat transfer from its surface, but for the same reason dust burns on the hot metal. This does not improve the atmosphere of the room;
It is not so easy to ensure maximum efficiency and long burning of one bookmark - you need to master the skills of adjusting the dampers.

Operating principle and scope

Buleryan with a water circuit uses the same conversion principle as with an air circuit. Only in this case, instead of hot air, hot water will rise up.

This property allows you to warm up a room of several tens of cubic meters of air in a short time. Water passing through the pipes surrounding the stove prevents the surface from overheating. Therefore, it does not burn out the air in the room.

Fuel consumption is reduced due to the use of a chamber in which wood gases obtained during the combustion stage in the primary combustion chamber are burned.

The heat exchanger is pipes located inside the casing surrounding the furnace. The minimum number of pipes is usually six. The heated water from the connection point at the top of the stove flows to the radiators installed in the room.

After passing around the circle, the cooled water returns to the lower connection. Such a heating boiler has high efficiency due to the use of three heating methods - heat transfer, heat exchange, and convection.

The stove can be used in various buildings. These could be residential buildings, warehouses or change houses.

When installing it, several conditions must be met:

A good chimney is necessary for the boiler to operate. Because when gases are burned in the second chamber, their complete combustion does not always occur. As a result, carbon monoxide may enter the room. It is odorless and when poisoned is often fatal.
For fire safety purposes , installation of buleryan is allowed at a distance of at least 0.5 meters from the wall.
for connecting the water circuit . They have good flexibility and are not subject to deformation from high temperatures.

Buleryan stove - user reviews

Soot, tar in the pipe and dust combustion are the main problems faced by the operators of these heating units. How users react to these problems and what solutions they find to minimize them can be read in the reviews.

User impressions of Buleryan

This is our third year with Buleryan and we are very pleased. Our 02-class furnace heats 300 cubic meters. In 4 hours it warms up the house to +18 at an outside temperature of -25. After the house is warmed up, we turn off the air, and it works on one load for about 10 hours and cools down for 1 hour. Our wood consumption is 1.5 times less than that of our neighbors who heat with stoves of other designs.

There are also several disadvantages:

A) We tried to heat the neighboring rooms through corrugated hoses, as the manufacturers write, but no normal air circulation worked. Some friends installed a duct fan for this purpose; they say that the efficiency has increased and heating is faster. True, the fan is noisy, and the air ducts throughout the house are a minus, although there is something to be patient about. Well, we just open all the doors in the house and the entire cubic capacity is heated quite well.

B) For me, a significant “bonus” from the work of the buleryanka is accumulation in the chimney and the release of tar onto the roof . Moreover, these deposits can periodically ignite in the pipe and therefore you need to monitor this matter. Despite the fact that I have a sandwich pipe, it gets very hot during such ignitions, so it needs to be regulated. But, as they say, we will survive this trouble.

Overall, we are satisfied and there is no better alternative to a gas boiler.

We have been stokers at Buleryan for five years now and everything is fine. And it turned out to be like this: a friend gave this miracle stove to my husband because he installed it incorrectly and couldn’t heat it. They made the chimney too low, and this cannot be done.

It is designed for 100 cubic meters. m., but we only have 50 cubic meters, so in an hour it heats up to +15 , despite the fact that the room was previously -7 (specially detected). At night we add thick logs and they burn until the morning. It stays on smoldering mode at night, and we sleep quite normally. We tried to heat it with dry wood chips and heated the rooms until it was completely Tashkent. We like that when leaving you can leave it like that - close the damper and it will go out on its own after a while.

Raw material really burns badly. Be sure to clean the pipe at least once a year.

By the way, a neighbor covered the buleryan with bricks and says that now it keeps the heat longer.

Condensation in pipes - what to do?

Most likely, many users of this stove are faced with the problem of condensation in the chimney. Some despair when faced with difficulties, but many still find the causes of the problems, eliminate them and share them with others:

I’ll tell you how we suffered with the rapid accumulation of condensate in the pipes - two weeks and the pipe was clogged to capacity. The pipes burned like matches...

The whole problem is that it reacts to even slight cooling of the pipe section. And we had a pipe leading through the wall into the kitchen and beyond. The horizontal pipe was clogged not with soot, but with coke . It turned out that the kitchen was unheated and was colder there than in the rest of the house, and significantly so. Therefore, condensation accumulated in places where there was a gap for cleaning, that is, just a gap and a brick inserted. We corrected this issue: the metal pipes were insulated, the cracks in the brick passages were sealed with asbestos. And it got pretty good!

And yet, the pipe was a little short, and there was a release of tar on the roof. Now we have built something like an attic there and the pipe has become as much as 8 meters - now I think nothing like that will happen.

Advice! Comprehensive advice from experts says that you need to use sandwich-type pipes or insulate the pipes with heat-insulating materials. However, this still does not negate the fact that the Buleryan will have to be cleaned from time to time.

Forum members also share tips for cleaning a chimney:

I clean the pipe with a sewer cleaning cable, but it needs to be “fluffed” at the end. I have a 10-meter cable, which consists of many wires. This device cleans just fine.

Chimney pipes burn out - what to do?

Some users share their experience in arranging the pipe , which will be useful to many who want to have a Buleryan:

I have a Buleryan type 01, with which I heat 70 m3. I’m quite satisfied, I’ve been heating it for three years now. True, the pipes had to be changed, since after 2 years the galvanized pipe was eaten through by sulfuric acid, which was in the condensate.

After that, I installed a special thermal pipe with internal AISI 304 stainless steel 0.5 mm thick (quite enough) - acid-resistant and heat-resistant , galvanized on the outside. The inside of this sandwich-type structure is filled with mineral wool. The result: the insulated pipe almost does not collect soot and condensation and the combustion has become much more stable!

As for long-term burning, dry acacia burns for me up to 10 hours maximum, but pine burns like a match - 2-3 hours.

Omnivorous Buleryan - myth or truth?

There are also many stories about the “omnivorousness” of the Buleryan, in which it is written that this unit takes everything that burns - from a log to a tire, but this is not entirely true. Perhaps this is applicable for garage heating - warm up and leave, but not for heating a house.

In the first year, I heated it with pine, since there was a lot of it, as well as all sorts of rubbish: old painted windows and trim, boxes, etc. But this was extreme, firstly, there were often flashes from the fact that gases collected in the chamber and suddenly ignited, while smoke entered the room. Another mistake was that I decided to save money and made the first one and a half meters of a 6-meter chimney without insulation, so that there would also be heat transfer from this section inside the room. Bad fuel plus this puncture - during this season the chimney was completely coked . Now I’ve given up pine and garbage fuel and use dry alder. One bookmark is enough for 12 hours - I have Buleryan 03.

No matter how much the manufacturer’s advertising praises the product, it still has some nuances, which some will call disadvantages, while others will call them operating features. Evaluate all the pros and cons of the Buleryan stove by reading the reviews and videos of this stove in operation. If you agree to deal with cleaning the chimney once a year, and also carefully work on the chimney pipe , then you can seriously think about purchasing Buleryan. Remember that to use it you need a constant supply of dry firewood.

Design and principle of operation of "Buleryan"

This heating unit was developed specifically for mobile teams of Canadian lumberjacks who roam from place to place during the season (winter). Therefore, from the very beginning, high demands were placed on safety and efficiency: the oven must heat the room in a matter of minutes. At the same time, there is no complicated setup or adjustment, the possibility of getting burned should be kept to a minimum, and carbon monoxide should not be allowed to enter the room. On top of that, it's light weight. Here is such a set. And it must be said that “Buler” (one of the names of this design) fully corresponds to them, for which Canadian heating engineers need to say a huge “thank you”.

The furnace body has the shape of a cylinder in less powerful models and teardrop-shaped (in cross section) in units for large heated areas. Sinusoidally curved pipes are built into the housing. They are mostly located inside the body, protruding only 1/3 from it. This is done for optimal heat transfer: cold air is sucked into the lower pipes, moving through the pipes it heats up and comes out hot. In the active combustion phase, the output temperature may be 120 o C or slightly higher. From 4 to 6 cubic meters are pumped per minute, so the room heats up really quickly.

The firebox is divided into 3 parts. The top and bottom are separated by ¼: at the bottom there are grates made of cast iron or a grate made of thick structural steel (at least 4 mm thick). The upper quarter of the firebox is separated by a steel sheet with holes that occupy about 7% of its area. This partition is installed horizontally and does not reach the door by about ¼ of the length. In this secondary chamber, partial combustion of the gases released during the combustion of wood occurs. The air for this process comes from the firebox through holes in the partition. Therefore, fuel combustion is incomplete (yet). But not the entire process takes place in the furnace; the remaining part of the gases burns out in the pipe.

The door is wide-format, the fit is sealed, there is a pipe on it with a built-in rotary throttle, which plays the role of a blower. By adjusting its position, the intensity of combustion is changed. Some manufacturers provide this throttle with a scale marked in degrees.

But that's not all the features. The main one is that part of the combustion products of wood occurs in the chimney. From the top of the firebox, unburned gases exit into a horizontal section of the chimney, up to 1 meter long. This section is mandatory for the Buleryans; the combustion of gases slows down a little and they cool down a little. The chimney then turns upward. And here the original Bulerjans have an economizer - a device that completes the process of afterburning pyrolysis gases. With it, the efficiency of the stove is around 80%, and without it - about 60%, which is also not bad, but... In a section of the chimney pipe 15-30 cm long, secondary burnout of gases occurs. The combustion is not constant, but periodic: it flares up and then dies out.

To achieve this effect, the pipe is carefully insulated. For this, heat insulators that can withstand high temperatures are used (basalt wool, mineral cardboard, etc., a layer of 3-5 cm, depending on the characteristics of the material). Gases that have not completely cooled down in the horizontal section of the pipe enter this section, where, due to good thermal insulation, a large amount of thermal energy accumulates. The temperature of the gases rises, they flare up again. The flared gas increases in volume, but due to the limited volume, it clogs the lumen of the pipe. A plug of gases forms. All gases burn out, cool and dissolve. Then the process is repeated. Its intensity and frequency depend on the quality of the wood and the throttle position. “Buleryan” itself adapts to these parameters without additional adjustments.

A slide valve is installed at the exit from the furnace to regulate the draft intensity. The diameter of the damper is approximately 10-20% smaller than the diameter of the chimney. A sector approximately a quarter of a circle in size is cut out of the damper disk. This plug is welded to a metal rod, with the help of which it is movably attached to the pipe. It is with this gate and throttle on the door that the combustion mode is set. How often the stove “puffs” depends on the fuel and their position.

It is worth agreeing that the Buleryanov device is original and expedient in everything. Very interesting and unusual solutions made these stoves very popular. Moreover, even without the last afterburning in the pipe, they use the device and do not complain: its efficiency is much higher than air heaters of other designs. Added to this is high safety: even leaving the door open, it is impossible to get caught. The same as getting burned on a hot body: in normal operating mode its temperature is only 50-60 o C, which is clearly not enough for a burn.