Camping stove from a profile pipe. Jet thrust on guard of cozy warmth: do-it-yourself rocket stove

Simple and cheap design rocket oven began its march around the world from North America, where it is still very popular in countryside. It is known on all continents, including distant Australia. The heating unit captivates amateur enthusiasts with its simplicity and energy efficiency, which, combined with low cost, makes it extremely attractive for home production. Of course, a large house cannot be heated with a jet stove, but in a country house or in a small garden house it will be more than appropriate. Surprisingly, but the fact is that only a few people know about this amazing design. And this is in a country where cold weather lasts longer than half a year! Today we will fill this gap and tell you everything we know about the warm and cozy "rocket", including the smallest details of its manufacture by hand and the subtleties of operation.

Reactive oven - what is it

Home heat that comes from a jet stove will not be given by any modern heater

A jet, or, as it is also called, a rocket furnace, in fact, nothing to do with modern technologies does not have. The only thing that makes this heating unit look like a space vehicle is the intense flow of flame and the buzz associated with the wrong mode of operation. Nevertheless, it cannot be said that the rocket oven is a completely technically backward device. Despite its simple design, it uses the most advanced combustion methods solid fuel:

pyrolytic combustion of gases released during the dry distillation of solid fuels;
the movement of gaseous products through the channels of the furnace, which does not require forced ejection due to draft.

This is what a simple jet-powered stove looks like

The simplest "rocket" is a curved piece of large diameter pipe. In short horizontal section lay firewood or other fuel and set it on fire. At first, the heater works like the most ordinary potbelly stove, but this is only until the temperature of the longer vertical part rises, which acts as a chimney. The red-hot metal contributes to the re-ignition of combustible substances and the appearance of a vacuum at the top of the chimney. By increasing the draft, the flow of air to the firewood increases, which significantly increases the intensity of combustion. In order to achieve even greater efficiency from this original device, the furnace opening is equipped with a door. When the cross section of the air channel decreases, the oxygen supply to the firewood stops and their pyrolytic decomposition into gaseous hydrocarbons begins. But they will not burn completely in such a simple installation - for this it will be necessary to equip a separate zone for afterburning the exhaust gases. By the way, this, as well as the thermal insulation of the chimney, allows more complex “rockets” to successfully compete with other solid fuel units. As for the simplest design we are considering, it is often used for cooking or heating food. All that is required for this is to equip a convenient platform for a pot or kettle on the vertical section of the furnace.

Geography of application of rocket heating units

Being a simple and convenient heating and cooking unit, the rocket stove is widely used both in mobile and stationary versions. Most often it is used:

for heating residential premises;
as fruit drying equipment;
for heating greenhouses;
to ensure normal working conditions in workshops or garages;
to maintain a positive temperature in warehouses, utility blocks, etc.

Due to its simplicity, unpretentiousness and reliability, the jet heater enjoys well-deserved respect among fishermen and hunters, rally enthusiasts and survivalists. There is even a special version, the purpose of which is indicated by the name - "Robinson".

Advantages and disadvantages of a rocket oven

Despite the simple design, the rocket oven has a lot of advantages:

coefficient useful action at the level of the best examples of modern solid fuel heating equipment;
efficiency - to achieve the required temperature, the jet unit will consume four times less firewood than a traditional oven;
heating temperature above 1000 °C;
the possibility of using any type of solid fuel, including dry vegetable waste, cones, needles and shavings;
completeness of combustion and environmental friendliness - during operation, the temperature of the flame rises so much that soot ignites. The smoke of a rocket stove consists mainly of water vapor and carbon dioxide;
the possibility of reloading fuel for continuous operation of the heater;
simplicity and reliability;
the presence of portable structures designed for mobile use.

The heating unit is not without drawbacks. The operation of the appliance is associated with the risk of penetration into the home carbon monoxide. The stove cannot be used to heat a large house, and attempts to install a water heat exchanger in the combustion zone lead to a decrease in heat output and disruption of normal operation. The disadvantages include the low aesthetic value of the design, which, however, is a very ambiguous statement, since for lovers of ethnic style, the design of the stove is a real find.

Types of jet heaters. The choice of design for self-production

Craftsmen have developed several designs of rocket stoves suitable for mobile or stationary use:

portable units made of metal pipes, cans or buckets;
jet heaters from a gas cylinder;
furnaces built of fireclay bricks and metal containers;
heating heat generators with a bench.

The most difficult to manufacture are structures, the construction of which requires the skills of a bricklayer. Nevertheless, if there are detailed schemes of serial layouts, even a novice home master will cope with this work.

Portable Rocket Oven

Portable rocket furnaces are mass-produced by the industry

Camping options are represented by the simplest designs, which are based on the same pipe bent or welded from separate segments. Improvements have only affected the installation of a partition for arranging an ash pan, in which a slot is made to suck in air. Often, the lower part of the loading chamber is equipped with a grate for supplying air directly to the combustion zone. The opening for laying firewood is equipped with a door, which subsequently regulates the air supply.

The requirements for a mobile design also apply to convenience during cooking, so the upper cut of the chimney must be equipped with a support for metal utensils.

Gas bottle unit

The use of a gas cylinder is the next step in the development of jet heaters. More complex structure allows you to significantly increase the thermal power and efficiency of the furnace. All that is required for the manufacture of the installation - household gas cylinder or a fuel barrel, pieces of thick-walled steel pipes and a metal sheet 3–5 mm thick.

A rocket stove from a gas cylinder can be used to heat small utility rooms

If there is a piece of steel pipe with thick walls and a diameter of more than 30 cm, a rocket furnace can be made from it. This option will allow you to avoid time-consuming operations associated with dismantling the factory gas tank.

How this design works can be seen in the diagram below. Firewood loaded into the firebox burns due to the air flow through the loading window. Afterburning of combustible gases occurs in a pipe installed inside the cylinder due to the supply of secondary air. To enhance the effect, the inner chamber is insulated, thanks to which it is possible to raise the temperature inside above 1000 ° C. Hot gases in the direction of travel hit the hood and enter the outer chamber, the walls of which act as a heat exchanger. Having given up their energy, the combustion products are discharged through a chimney cut into the lower part on the back of the cylinder.

To create the thrust necessary for the stable operation of the rocket furnace, the top of the chimney is raised by at least 4 m relative to the loading window.

Combined brick and metal barrel rocket stove

The use of fireclay bricks for arranging the firebox and the internal chambers of the jet heater translates the "rocket" into the category of stationary structures. The high heat capacity of the materials used allows you to accumulate heat and give it away for several hours, so such units are often installed in residential premises.

Construction of a furnace with a refractory lining of the working area

Jet stove with bench

Like other solid fuel stoves, the "rocket" has the disadvantage that most of the heat escapes through the chimney. Despite this, the individual advantages of its design make it easy to get rid of this minus. The thing is that the unit was called jet for a reason, but because of the high speed of excision of burning gases. It is precisely this feature of it that can be turned for good by significantly increasing the length of the smoke ducts.

Scheme of a jet furnace with a bench

This idea has found its implementation in massive stationary structures with a couch in the form of a sofa or bed. It is successfully made of brick or rubble stone, decorated with a plastic mass of clay and sawdust. Due to the high heat capacity of the materials used, the stove can retain heat all night, which, combined with high efficiency, makes the heating unit very attractive for installation in residential premises.

When choosing a design for manufacturing at home, it is necessary to take into account the features of its operation. As a hiking option, a mobile unit is chosen - it will be enough to keep warm, dry clothes and cook dinner. In order to heat small technical rooms from time to time, a portable gas cylinder design is used. If you want to heat a small country house or cottage, then the best option than a jet heating unit with a bench, simply does not exist.

We build a rocket stove with our own hands

Suggested for self-manufacturing the design is the elite of rocket heaters. After construction, it will delight the owner with comfort and cozy warmth even in the most severe frost for a long time. As you might have guessed, we are talking about a unit with a stove bench. Despite the fact that such a design is the most complex, the diagrams, instructions and descriptions presented by us will allow you to build a furnace in just 2-3 days.

Device and principle of operation

The rocket furnace consists of several chambers and channels. The bunker for loading firewood is made of fireclay bricks and is equipped with an opening for air supply in the lower part. It has a refractory lining and a channel that connects the firebox with a vertical flue (flame tube or riser). A metal barrel is used as the casing of the rocket furnace, inside which an afterburning chamber is laid out with magnesite or fireclay bricks. The heat exchanger of the heating unit is not only a steel tank, but also long horizontal channels of the bench, made of galvanized steel pipes or bricks.

The processes occurring inside a stationary jet furnace resemble the operation of pyrolysis heating units.

There is no need to use refractory materials for the arrangement of heat exchange channels. Enough well-burnt red brick.

The body of the stove and the trestle beds are formed from sandbags, stone or brick fragments and smeared with a clay composition. The good heat storage capacity of finishing materials allows the construction to give off heat for several hours after the firewood has completely burned out. To remove the products of combustion, a high chimney is used, which can pass both indoors and outdoors.

The high performance of the "rocket" is explained by the method of fuel combustion, which tends more not so much to direct-flow heating units, but to pyrolysis boilers. The operation of the furnace is accompanied by the active release of gas components, which are afterburned in the riser. The cap helps to reduce the flow rate of hot gases, otherwise they simply would not have time to oxidize. By the way, the heating of the upper part of the flame tube creates a rarefaction at its end, due to which the active combustion of the fuel occurs. The temperature in the riser is so high that even the soot ignites. Nevertheless, at the point of transition from the vertical channel to the horizontal heat exchanger, experts recommend installing an ash pan, equipping its chamber with a small door for periodic maintenance.

Calculation of basic parameters, drawing

There is no need to give the exact dimensions of a rocket stove with a stove bench - its dimensions and configuration completely depend on the characteristics of the room. The presented method for calculating the parameters, based on the use of the proportions of all parts of the rocket furnace, will be quite enough to design a high-performance, efficient unit.

To perform the calculation, it is sufficient to know the diameter D and the height H of the outer heat exchange shell (drum).

The height of the flame tube is at least 1.3H.
The gap between the riser and the cap is 0.1–0.15H.
External clay coating is carried out no higher than 1/3H.
The thickness of the heat storage layer should be no more than 1/3D.
The cross section of the flame tube is 0.25–0.3D.
The height of the ash pan is up to 10% of the vertical dimension of the casing.
The section of the blower should be 50% less than the area of the riser.
The thickness of the adobe cushion above the heat exchanger is at least 1/4D.
Chimney height - more than 4 m.
The length of the horizontal heat exchanger is calculated based on the volume of the drum. In the case of using a standard barrel for fuel and lubricants, it can reach 6–8 m.

As you can see, it is not difficult to determine the dimensions of all elements of the furnace, especially since its design allows some liberties in terms of dimensions and configuration.

For perfectionists and those who are afraid to experiment, here is a drawing of the heating unit, made to scale on a marked sheet of paper. If necessary, it will not be difficult to remove the exact dimensions from it.

Drawing of a stationary jet heating installation

Materials and tools

The construction of a jet furnace does not require any specific devices. Of the power tool in the process of work, you will only need welding machine and a grinder, and even then just for a few minutes - to separate the barrel lid and configure the heat exchanger pipes. Everything else can also be found in any owner:

trowel (trowel);
bushhammer;
building level and plumb;
roulette;
a container for preparing a solution;
bayonet shovel;
tamper;
buckets;
concrete trowel.

Although the design of the “rocket” is undemanding to materials, some of them will still have to be bought. Here is a list of what will be required during the construction process:

refractory bricks of any type;
metal barrel for the manufacture of the casing;
pipe Ø30–40 cm, which will hold the thermal insulation coating of the vertical channel. You can use a case from an old water heater, a suitable capacity of an industrial receiver or a hydraulic accumulator;
galvanized steel pipes with a diameter of more than 25 cm, which will be needed as a heat exchanger;
a steel pipe for arranging a chimney with a diameter of 150 mm and an elbow for its removal by 90 °;
ash hatch;
blower door;
a special heat-resistant mixture for preparing a solution (can be replaced with sand and clay);
perlite for riser thermal insulation;
Red brick;
rubble stone or brick waste;
sawdust or chaff.

Since the barrel will only be partially embedded in the oven, it will have to be painted to increase the aesthetic value of the unit. To do this, you will additionally need a metal brush, a solvent to degrease the metal surface, a primer and any heat-resistant paint.

Site selection and other preparations

When determining the construction site, one should take into account the requirements that apply to all designs of solid fuel open flame furnaces:

the area of \u200b\u200bthe room in which it is planned to install a jet heater with a sunbed should be at least 16 m 2;
the absence of logs (floor beams) under the furnace body will greatly simplify installation;
above the hearth there should not be wooden rafters and ceilings;
if part of the chimney passes through the ceiling, then the stove is installed closer to the central part of the house. In this case, the pipe can be fixed near the ridge;
you should not install a heating structure close to the outer contour of the building - precious heat will go outside. It is better to attach the unit to one of the internal walls;
it is not recommended to build a jet device near wooden walls and partitions. In this case, choose a separate location.

It is also important how convenient it will be to kindle a rocket stove and throw firewood into it. To do this, the firebox is placed towards the entrance, providing at least 1 m of free space in front of it.

One of the many options for installing the stove in the middle of the room

In a small room, it is convenient to place the rocket furnace in the corner, orienting the hopper in one direction, and the lounger in the other.

Having chosen a place, they begin to prepare it for future construction. If the room has a wooden floor, then that part of it that will be under the stove is removed. After that, a shallow pit is dug, the bottom of which is compacted with a rammer.

In addition, it is necessary to prepare a metal barrel for installation. To do this, cut off its cover along the contour. In this case, a part of the thickening in the form of a metal hoop is left to ensure the rigidity of the base of the casing. Most likely, the container from under the fuel and lubricants will be dirty and rusty, so it is better to clean it before installation.

The last thing to do before starting construction is to prepare the solution. It is best to use a special heat-resistant composition that can be bought at hardware stores, but you can get by with a simple mixture of sand and clay in a ratio of 1:1 or 1:2, depending on the fat content of the latter. Water will be needed up to ¼ of the volume of dry components - the output should be a composition resembling thick sour cream.

Instructions for the progress of work

As already mentioned, in order to make a rocket stove with a bench, it will take much more effort and time than in the manufacture of a metal unit. Facilitate the task and reduce time will help step-by-step instruction with illustrations of all stages of construction.

The place where the firebox will be formed is deepened by 10 cm and laid out with refractory bricks, after which a formwork is installed along the contour of the furnace. To strengthen the foundation, it is necessary to install reinforcement from construction mesh, reinforcement Ø10–20 mm or scraps of metal pipes and corners.
Formwork arrangement
The base of the working chamber is laid out according to the level.
The base of the loading chamber is laid out with refractory bricks
Fill the structure with concrete. Further work can be started immediately after setting the solution. As a rule, one day is enough for this.
Foundation pouring
From refractory bricks laid in a continuous order, form the base of the jet furnace and the combustion chamber.
Rocket oven base
Several rows of masonry raise the side walls of the structure.
The walls are formed using fireclay bricks installed on the edge
Equip the lower channel of the heat-generating rocket.
The combustion chamber is covered with a row of bricks laid across in such a way as to leave two openings open - the firebox and the riser (vertical channel).
Method of overlapping the horizontal part of the working chamber
Prepare for installation the old housing from the storage boiler. To do this, the device is cut on both sides to get a large diameter pipe.
Furnace parts prepared for installation
The lower part of the fuel tank is equipped with a flange, which will include a horizontal heat exchanger pipe. Welds must be continuous to ensure tightness and, accordingly, the safety of the structure.
Installation of the lower branch pipe is carried out by welding
After the outlet pipe is cut into the barrel, it is cleaned of rust, covered with a primer and several layers of heat-resistant paint.
A side outlet is welded to the horizontal chimney, which acts as an ash pan. To clean it, the channel is equipped with a sealed flange.
A fire tube is laid out of fireclay bricks. The shape of its internal channel is a square with a side of 18 cm. During operation, the vertical position of the structure must be controlled using a plumb line or building level.
The height of the vertical channel depends on the dimensions of the outer drum
A casing is installed on the flame tube, after which the gaps between the metal container and the walls of the vertical channel are filled with perlite. To avoid spillage of thermal insulation on the floor, the bottom of the riser is carefully sealed with a clay mixture.
Riser insulation method
The cap of the firebox is made. In its capacity, you can use the cut off part of the water heater, providing it with a convenient handle.
With the help of brick or stone masonry, the furnace body is formed. Sandbags placed at the base of the vertical channel can also be used for this purpose.
Furnace body can be lined with sandbags

Unpretentious spring appearance is hidden with the help of adobe coating. For its manufacture, up to 50% of large sawdust or chaff (chaff) is introduced into the clay solution.

Coating of the furnace body

Additives in the clay mix perform the same role as crushed stone in concrete. They are needed so that during drying and subsequent work with variable thermal loads, the surface of the furnace does not crack.
Perlite backfill on top also needs to be sealed with a coating.
Form the front of the furnace. To do this, in any suitable way (brick or masonry, sandbags, adobe), lay out the contour of the furnace. Inner part fill with crushed stone, and the top is given the desired shape using an adobe mixture.
On the prepared base, install the outer casing of metal barrel, orienting the container with the lower branch pipe towards the bench. The bottom of the container is sealed with clay.
Installation of a casing - a metal barrel
Using a corrugated pipe, a channel is led to the firebox, which connects the furnace with the external atmosphere. If it is not installed, then the stove will consume warm air from the room, which will be replaced by cold masses coming from outside. From the side of the firebox, the channel will need to be blocked as soon as the firewood is completely burned out. This will not allow air from the street to penetrate into the heat exchange channels.
Air supply duct outside the building
To check the operation of the rocket furnace, the first kindling is carried out, during which they make sure that the gases freely exit into the horizontal chimney.
Heat exchanger pipes are connected to the lower branch pipe, which are installed on a base formed of red brick.
Perform chimney installation. All joints of the parts of the horizontal and vertical channels are sealed with asbestos cord and refractory coating.
Using the same method as in the manufacture of the furnace body, give the required configuration to the bench.
Fully formed oven with bench
The barrel can be completely covered with adobe, leaving only a horizontal platform open, which is convenient to use for heating food.
The chimney brought out is equipped with a condensate and tar trap, and the upper cut is protected from precipitation with a cap.
The outer part of the chimney is supplied with a trap for liquid substances

Tests of the rocket furnace are carried out only after the adobe coating has completely dried. Otherwise, cracking of the decorative coating is possible.

View of the finished rocket stove with a stove bench

For the safe operation of the rocket furnace, the room must be equipped with carbon monoxide sensors.

Modernization of the rocket heat generator

To expand the scope of reactive heating furnaces, they are being finalized, increasing the convenience and versatility of the design. A platform intended for cooking is often replaced in mobile structures with a full-fledged stove. It is convenient to use such a hob in your own backyard for household purposes - for cooking food for pets or during the preservation of blanks for the winter. A feature of this type of rocket furnace is a wide and flat horizontal channel into which hot gases are directed from the nozzle. Passing under the surface of the stove, they heat it red-hot, after which they go into a vertical chimney. Comfortable legs give stability to the structure, and the original shape allows the unit to be used as a stand or table when it is not used for its intended purpose.

A jet stove with a stove is a necessary thing in a suburban area

A liquid heat exchanger cannot be installed in the flame tube of a jet furnace, but this does not mean that it cannot be used as a heat generator for a water heating system. To do this, the "rocket" is equipped with a kind of contour of radiator plates, which create a kind of labyrinth in the afterburning zone. Due to their heating, heat is removed from the afterburner to the water jacket. The efficiency of the unit depends on the area and heat capacity of the plates, so they are made in the form of massive metal strips with an area of up to ¾ of the cross section of the flame channel. It must be said that such a heat exchanger is best used to obtain hot water using the rocket oven itself in the traditional way.

Scheme of a rocket assembly equipped with a water circuit

The rocket stove with a convector has an original design. To increase heat transfer, vertical tubes are mounted on the surface of the outer casing, which perform the same role as the air channels of the buleryan. Cold air is trapped at the bottom of the tube heat exchangers and heated up as it moves up. This ensures forced convection, which further increases the thermal efficiency of the installation.

Shell of the rocket heat generator equipped with a convector

Features of using jet furnaces

Being a system long burning, rocket oven requires preheating before operation. As a rule, no one complies with this requirement in mobile installations - they consume little fuel, and the potbelly stove itself is most often used according to the principle "it works, and that's okay." In stationary structures, it is extremely important to warm up the furnace before starting up, since with a cold flame tube, there can be no question of any afterburning. Firewood will burn without giving off heat, and the chimney will very quickly become covered with soot, tar and creosote.

The furnace is heated using chips, paper or shavings, which are loaded into the firebox and set on fire. The output to the operating mode is judged by the buzz in the flame channel. A strong sound indicates inefficient operation of the unit. As soon as the rumble begins to subside, it is necessary to start laying the main fuel. The blower in the first 10-15 minutes should be completely open. Then the air supply is reduced, focusing on the sound of the furnace - it should “rustle” or “whisper”. After the firewood burns out, the air channel of the firebox is covered to prevent heat from escaping from the room. Once every 2-3 days, the ash is removed, for which they use a metal scoop and a poker.

Maintenance of the jet furnace is carried out no more than once a season. To do this, open the ash pan door, through which soot residues are removed. If necessary, clean the smoke channel using the hatch of its trap. I must say that the correct operation of the jet heater never leads to smoke in the room. All that is required for this from the owner is to follow the recommendations for using the "rocket" and not neglect the safety rules.

Do-it-yourself rocket stove: the subtleties and nuances of construction (video)

Unique technical characteristics, almost zero cost and availability of materials for construction cover all the shortcomings of the jet furnace. If you wish, you can build a full-fledged heater over the weekend, including arranging a comfortable bed. "Rocket" is also convenient in that it does not require a high qualification of a stove-maker, and in the external design it allows the implementation of even the most unusual design concept.

This rocket stove is a convenient compact portable unit, which is designed not for heating the room, but for cooking on a hike or on vacation. You can easily and quickly heat up food, boil water, fry meat or fish. It is not difficult to make this construction with your own hands. The design has many advantages over others.

Advantages of the Robinson Rocket Furnace

First of all, it is worth noting that such a stove is convenient to maintain and kindle (you can use a variety of fuels: grass, dry branches, firewood, paper, hay), it is easy to assemble and disassemble. The device is simple and reliable. This design does not emit smoke and soot, so you will not need to wash the dishes from dirt for a long time. If you decide to make the unit from a heat-resistant material, then the walls will withstand temperature up to 800°. The original "Robinson" was very carefully developed by physicists, so at the moment these designs are popular all over the world.

Device

Portable stove "Robinson" is made on the basis of the principle: the fuel burns in the bunker compartment, the fire enters the combustion zone and rises up the chimney. First, all the energy is used to heat the chimney, after it is warmed up, due to the high temperature, the gases are burned again.

"Robinson" do from a pipe 100x150 millimeters. It is important that the cross section of the chimney is the same size as that of the firebox, otherwise back draft may occur. Legs are usually threaded bar and screwed in place, however this option not the most comfortable. As a support, you can use either stationary legs or a steel sheet that is welded to the bottom. The original Robinson oven does not have a channel for air supply, a cover for combustion control too. no. However, there are many homemade options where this shortcoming has been corrected. We will consider the most standard of them.

How to make "Robinson" with your own hands

So, we have a glass (sometimes called the heart of the furnace). He has oblong shape. At the bottom there is a suction (air rises from it and enters the chamber). On the sides of the glass are two bunkers. One hopper is welded under 90° angle(it is used for ignition) and has one chamber, the second - at an angle of 45°, it has two chambers: a loading chamber and a chamber air suction. Next to the suction there is a box (we insert it tightly into a glass), into which the ashes are collected after burning the fuel.

The rocket is a real marvelous unit!

The rocket stove is a heating and cooking system that operates on wood, is famous for its high technical indicators and has a simple design. The principle of operation of such a long-burning unit is based on the fact that the gases formed during the combustion of fuel enter a special bell, in which they are completely burned. Due to this, the temperature indicators of the stove increase significantly, and the pressure value decreases. Moreover, soot in the jet heating system is not formed.

The cycles of combustion of heated gases are repeated constantly (while the furnace is being heated). This causes the system to go into maximum thrust mode. Its specific value is determined by the features of a home-made unit. If the heating device is assembled really correctly, the temperature in its hood can reach 1200 ° C. In this case, all the fuel used is burned without residue. It is also important that the heated cap is allowed to be used as a hob. On it you can dry fruits, heat water, cook food.

Initially, the stove we are interested in was designed for use in difficult (for example, camping) conditions. Because of this, her designs were put forward special requirements.The result is a unique unit that:

makes it possible to cook in areas where there is no gas and electricity;
qualitatively heats the room;
saves heat for 6-8 hours (minimum) after burning firewood;
has a high efficiency;
quite safe to use.

In addition, the rocket has a design that allows you to report a new portion of firewood into the furnace without stopping the combustion process. The operation of the unit with similar capabilities, of course, is to the liking of any person. This determines the high popularity of the described heating systems both among outdoor enthusiasts and among ordinary summer residents who need unpretentious and efficient stoves.

An important point. If you plan to create the simplest jet unit with your own hands, it can only be heated with dry wood. Wet wood can cause backdraft. However, it is not recommended to kindle more complex rockets with wet wood, since they will not be able to provide the high temperature required for burning heated gases.

The described heating devices must not be left unattended. Melted the stove, wait until the fuel burns out completely. Another drawback of rocket equipment is the impossibility of heating private baths with it (in particular, their steam rooms). This is due to the fact that the jet unit gives very little infrared heat, which is exactly what is required for taking bath procedures. Missiles, perhaps, have no other disadvantages.

Types of jet heating installations - what do you need?

The simplest rockets are made from almost any tin can. A portable stove can be made from a bucket, a can of paint, and so on. Such systems are ideal for a picnic in nature, they are often used on construction sites. Simple stoves are not suitable for space heating. They are used exclusively for cooking, heating water. A rocket made from a bucket can be fired with a small torch, dry cones and foliage, bunches of branches. In such a stove, combustion products do not have time to form combustible wood gas. They immediately go into the chimney.

More complex heating structures are created from an old gas cylinder or from a metal barrel and brick. These furnaces are necessarily equipped with a riser to increase traction and a horizontally located smoke path. There are also rockets made entirely of bricks. They can be equipped with several chimneys at once and are used for heating large rooms and floor heating. And if you wish, it’s really possible to build even a full-fledged stove-bed.

We will tell you how to independently make all these types of reactive devices for heating. And let's start our master class with the simplest - with the manufacture of an elementary garden-camping stove from two tin containers (buckets, cans). In addition to them, we need steel clamps with a section of 10 cm, metal corners, a grinder, a stainless steel chimney pipe, metal scissors, gravel. The scheme of work will be as follows:

1. We take two buckets. From a container of a smaller volume (diameter) we make a cover for our rocket. Cut a hole in the bucket. It is necessary for the organization of the chimney.
2. In a larger bucket, cut out another hole at the bottom. We will connect the firebox to it. We carry out all operations with scissors for metal, bending the resulting petals (pieces of tin) inward.
3. We construct a forward flow from the pipe and corners. We insert it into the bucket, and then, using a clamp, we connect it with curved petals.
4. We fill the space between the forward flow and the body of the heating device with gravel. This building material will play the role of a heat accumulator and at the same time a heat insulator.
5. We put the second bucket on the stove.
6. We bend a small burner from the wire, on which it will be possible to install dishes with water and food.

It is advisable to paint a portable rocket with any paint with high level heat resistance. After drying, we can use an elementary cooking stove. Note! The ignition of the rocket is carried out through a branch pipe extending from the forward flow.

A stove made of barrels and bricks - both cooks and heats!

The construction of a stationary rocket launcher requires significantly more money and time. We prepare the following materials and tools: a metal chimney pipe, a red (required heat-resistant) brick, a shovel, an old barbecue, a metal brush, a trowel, cement and sand (it is better to immediately buy a mixture of these materials ready for use), reinforcing bars, a little perlite, adobe and expanded clay, heat-resistant paint, a barrel of 200 liters. We proceed to the construction of a brick oven and a metal barrel:

1. We dig a hole in the floor with a depth of 0.3-0.5 m. We will hide a horizontal chimney in it, without which the rocket launcher will not work.
2. We burn a 200-liter barrel, thoroughly clean it. We mount a flange in the tank that will connect it to the chimney. After that, we apply several layers of heat-resistant paint to the container. We use the barrel prepared in this way as a cap for the heating unit.
3. We equip the foundation. We make a simple formwork from boards, deepen 2-3 bricks into the ground at the installation site of the furnace. We place reinforcing bars on top. Then we lay bricks in the lower part of the combustion chamber (around the entire perimeter). We fill the structure with a cement-sand mortar.

After the fill dries, we proceed to the masonry. It is done with . We bring the first tier of masonry up. We need to leave only a hole for the firebox. On the second line we form a channel (lower) of the heating structure. It should be blocked on the third tier, and in such a way that we have two holes left. One of them is intended for the vertical channel, the second - directly for the combustion chamber.

Next, we mount a tee in the barrel to clean the chimney. It is not necessary to install it, but it is desirable if you plan to use the stove for a long time. After that, we put a vertical channel. The rising section of the structure (we take its diameter of about 18 cm) is laid out using the "boot" technology. Then we put on the old water heater on the ascending part of the furnace. All voids that remain after this operation are filled with perlite.

Now we cover the base of the casing of the rocket unit with clay and surround the base of our structure with sandbags. All remaining free areas are filled with expanded clay. We connect the chimney pipe to the structure, turn the casing barrel over and pull it onto the rising part of the stove. The final work is lining the chimney with sand in bags and filling them with expanded clay. Then we give the structure the required shape with the help of clay (fireclay), mount a barbecue grill in the neck of a home-made rocket and cover it with a lid.

The last step is to seal the existing seams on the furnace. In principle, we can already do a trial run of our design. But experts advise additionally bringing a separate air duct from the street to the stove. It is important. A heating rocket needs a lot of air to function properly. In the room it will not be enough. A street duct is guaranteed to solve this problem.

Rocket heating from a cylinder - let's work with a welding machine

For the construction of the rocket, we choose a heat-resistant and non-explosive cylinder. An all-metal 50-liter tank in which propane is stored is optimal for these purposes. This balloon has standard sizes: height - 85 cm and cross section - 30 cm.

Such parameters are ideal for self-production of the furnace. The modest size and small weight of the cylinder do not make it difficult to work with it. At the same time, it is allowed to burn any wood fuel in the finished rocket. You can also take propane cylinders for 27 or 12 liters. They make compact portable stoves. But the power figures similar devices small. Use them to heat rooms country houses impractical.

For the construction of the furnace, in addition to the cylinder, you will need:

pipes made of steel with a cross section of 15, 7 and 10 cm (the first two will go to the organization of a vertical internal channel, the third - to the chimney);
profile tubular product 15x15 cm (we will make a loading compartment and a firebox from it);
3 mm thick sheet of metal;
dense (100 or more kg / cubic meter) basalt fiber (it will perform the function thermal insulation material).

On the Internet there are various drawings for creating a stove from a balloon. We propose to follow this scheme.

The algorithm for manufacturing a rocket balloon installation is simple. First, we bleed all the gas from the tank. Then we unscrew the valve, fill the tank with water (up to the top) and cut off its upper part along the seam. We cut out the windows on the two sides of the gas cylinder that are required to connect the chimney and install the fuel chamber.

After that, we insert the profile tubular product into the container, connect it to the channel (vertical). The latter is taken out through the bottom of the tank. Next, we perform all the necessary actions, focusing on the presented drawing, as well as on the video that we offer home craftsmen for review.

At the end of the work, we weld the cut off part of the container in its place, analyze all the resulting seams for permeability. Uncontrolled entry of air into the structure must not be allowed. If the seams are reliable, we connect a chimney to a home-made system. We weld the legs to the bottom of the rocket balloon. We install the stove on a steel sheet with parameters of 1.5x1 m. The unit is ready for use!

Stove-couch - for lovers of special comfort

The heating unit with a place to sleep and rest is equipped with a special heat exchanger. Its channels are interconnected. They are made from non-flammable materials. The heat exchanger is installed under the bed plane. The design of such a furnace is very thoughtful and relatively complex. The bed itself is a surface made of brick or stone and clay. When the stove burns, the heated gas moves through the heat exchange channels, gives up heat, and then is removed through the smoke duct outside the house. The height of the chimney is made within 3–3.5 m. The stove is mounted at the edge of the bench (on one side). In most cases, it is equipped with a cooking surface. A detailed drawing of this system is shown below.

Elements of the furnace in the diagram:

blower - 1a;
fuel bunker - 1b;
channel for secondary air - 1v;
flame tube - 1g;
riser (primary chimney) - 1d.

The fuel chamber is equipped with a blind cover, the blower is equipped with a special regulator for adjusting the amount of air supplied. The flame tube has a length of 15–20 cm. The secondary air channel is necessary for the complete combustion of gases. The cross section of the riser is 7–10 cm. A chimney with a diameter of 10 cm is recommended for cases where we want to get the most rocket power. A riser with a cross section of 7 cm provides an optimal indicator of the efficiency of the stove. The flame tube and the primary chimney need high-quality thermal insulation.

We will make the rocket body from a gas cylinder, although a metal barrel can also be used. Under the housing cover (2a), the primary chimney supplies heated air, and the heated gases leaving the riser heat the cooking device (2b). Other body elements:

lower part (2d);
heat exchange channels (2d);
shell - metal insulation of the chimney (2c);
exit to the cleaning chamber (2e).

The flue pipe must be completely sealed throughout. At a height of 1/3 from the upper end of the drum (body), the gases already have a low temperature. They get cold. Approximately from the specified height, the rocket bed is lined (to the floor). This process is understood as the thermal insulation of the furnace with special compounds. The second cleaning chamber in the scheme (3a) is needed to remove carbon deposits from the hog (4) - the heat exchanger. It must be equipped with a sealed door (3b). Now that we have dealt with the design of the couch, we can proceed to its construction.

Building a rocket with a place to sleep - the first steps are the most important!

Before starting work, we knead all the necessary compositions:

Kiln clay (designation 5b in the diagram), which is connected to crushed stone. This composition plays the role of the main heat insulator.
Saman (5a). It is a composition of straw and any clay at hand, diluted with water to a relatively thick consistency.
Seeded sand (5g).
Heat-resistant lining (5v). It is made from equal parts fireclay sand and clay.
Clay of medium fat content (5d). It is used for laying rockets.

We make a bed for our couch. In fact, we need to knock down high-strength shields under the stove bench and directly under the stove. We make the frame of the structures from wooden bars 10x10 cm. We make the cells of the frame with dimensions of 60x120 cm (for the bed) and 60x90 cm (for the heating installation). Then we sheathe the resulting 4-centimeter skeleton. And the facade of the couch can be finished later with sheets of drywall.

It is advisable to treat wood products with Biocide before installation, and then apply two layers of an aqueous emulsion on them.

We lay on the floor, where we will put a heating rocket, basalt cardboard 4 mm thick. In shape and geometric parameters, it must be similar to the characteristics of the bed. We install an iron roofing sheet on top of the basalt lining. In front of the firebox, it will come out from under the unit by about 25 cm. We mount the bed made earlier on the place prepared for it. On the wall at a height of 13 cm above the level of the bench (at one of its ends), we punch a hole. It is necessary for the device of the chimney.

The next stage is the installation of formwork along the perimeter of the bed and pouring the installed structure with adobe. The surface of the mixture is carefully leveled using the rule. We wait 14-20 days until the adobe hardens. During this time, it is possible to make the body of the heating structure from a gas cylinder according to the previously described scheme. The furnace parts of the rocket (blower, flame channel, chamber) are welded into a single structure with a gas container and coated with a heat-resistant lining. Important! We apply the composition in a continuous layer only below. We do not process the upper part and sides of the structure with a solution.

Next, we mount another formwork under the area where the rocket will stand. It will allow us to make a heat-resistant thermal protection of the stove. The height of the formwork structure is about 10 cm. We fill it with a mixture of crushed stone and oven clay. Then, one by one, we do:

1. Shell. We bend it from a sheet of steel or use a finished pipe with a section of 15–20 cm.
2. Furnace structure.
3. Cleaning chamber. This element is made of 1.5 mm galvanized steel. On the side, we cut an opening with a section of 16–18 cm. A chimney will subsequently enter it.

Completion of work - a warm couch will turn out well!

We put the drum from the gas cylinder on the primary chimney. At the bottom of the installed body, lay out the oven clay, forming an inclined surface (about 7 °) with a spatula, which is directed to the window of the cleaning compartment. Then we put a metal round timber on the chimney. It should be pressed into the clay composition. Then we stretch the shell on the riser and coat it with clay of medium fat content. The next steps are:

1. We line the chimney from the inside. We use sand. It should be covered in separate layers. Each of them is wetted and rammed. The total number of layers is 7. We put 5 cm of medium-fat clay on top of the sand.
2. We put a cleaning box, coating its bottom and side surfaces with clay. We mount the opening of the transition channel in the opening of the drum, press it as hard as possible. All remaining gaps are sealed with clay. It is necessary to achieve complete tightness of this stove assembly.
3. Along the contour (external) of the bed, we mount the next formwork. It should rise above the edge of the hole for the hog by about 9 cm. Fill the formwork with adobe mixture.
4. We stretch the corrugated pipe along the entire length of the rocket bed. We connect one end of the corrugated product to the cleaning department.
5. We lay the fixed corrugated pipe in a spiral and insert its second end into the chimney outlet opening, fixing the junction with a clay composition.
6. We process the burs along the entire length with a solution of adobe, compact this coating.
7. We fix the housing covers and the cleaning chamber with bolts, under which we install rubber gaskets.
8. We coat the drum with adobe (we do not touch only the upper part) with a layer of about 10 cm.

After about 17 days, the adobe will dry out. We will be able to remove the formwork, apply special enamel to the drum, which can withstand heating up to 750 °C. Then experts advise to treat the adobe surface with acrylic-based varnish (preferably in two layers). Such a coating will protect the structure from moisture and make the stove outwardly very attractive.

The heated bed is done. We test our facility before the start of its full operation. Verification is elementary. We put some paper in the firebox, set it on fire, and monitor the behavior of the rocket. If everything is fine - there are no frightening sounds, we put firewood. After a while, the unit will begin to hum. At this point, we close the blower of the furnace. We wait. When the buzz is replaced by a gentle whisper (the soft sound of a working stove), open the blower a little. Next, we use the heating installation for its intended purpose.

The jet stove or rocket stove came about as a result of a departure from the tradition of building space heating equipment. It is considered an economical heat generator, the design of which is elementary. Therefore, many are thinking about building a jet furnace with their own hands.

Description, advantages and disadvantages of the rocket oven

A heat generator for heating indoor air is called a rocket stove or a jet stove, because during operation it makes special sounds in case of excessive air intake. This noise can be mistaken for a roar jet engine. In normal mode, the equipment operates with a barely audible rustling sound.

The rocket stove serves as a home heating and cooking device. It takes about 6 hours to burn one batch of firewood in such equipment, more than in a standard metal stove. The reason for this is the creation of a heat generator based on a furnace with upper combustion.

The flame from the jet furnace can escape

The advantages of the rocket oven include:

independence from fuel energy;
simplicity of design, consisting of affordable parts, connected in a matter of minutes;
the ability to produce a lot of heat, despite the quality of the loaded fuel.

The jet furnace also has some disadvantages:

manual control, which implies constant monitoring of equipment operation;
danger of getting burned, because the walls of the equipment become extremely hot;
inexpediency of use in the bath, because it will not be possible to warm it up.

Kinds

A unit that emits a rocket hum during operation happens:

portable (unit of metal pipes, buckets or gas cylinder);
Portable rocket furnaces are mass-produced by the industry
stationary (created from fireclay bricks and metal containers);
Such a unit is more difficult to build than a metal furnace.
equipment for heating air with a bench.
The bed is equipped for back wall ovens

Portable structures are made in large batches, because they are used for hiking. The basis of these heat generators is a pipe made up of several segments. True, such structures, unlike units based on fireclay bricks, are not reliable. The walls of refractory blocks increase the heat transfer of the jet furnace. If desired, you can add a couch in the form of a sofa or bed, decorated with clay or sawdust.

Details and operation of a jet heat generator

An elementary rocket furnace is a device of two pipe fragments connected by a branch at an angle of 90 degrees. The combustion chamber in this heat generator is usually a zone in the horizontal part of the structure. But sometimes the fuel is placed in the vertical section of the apparatus, for which the rocket furnace is constructed from two pipes of different lengths, mounted vertically and connected by a common horizontal channel.

Primary and secondary air passes through the furnace

The functioning of the jet furnace is based on two actions: the unhindered passage of wood gases through the pipe and the afterburning of gases produced during the combustion of fuel. Wood chips and firewood are placed in the furnace of this heat generator after a highly flammable material like paper has ignited there. A container with water or other contents is placed on the open section of the pipe. At the same time, a small space is left between the structure and the installed tank, which is necessary to create traction.

The processes occurring inside a stationary jet furnace resemble the operation of pyrolysis heating units.

Calculation of parameters (tables)

The volume of the furnace should be determined with skill, because it is he who affects the power and amount of heat generated by heating equipment. When calculating the dimensions of reactive heating equipment, an indicator of the inner diameter of the drum D is used, the value of which can vary within 300–600 mm. You also need to know the cross-sectional area of the drum. To determine this indicator of a rocket furnace, use the formula: S = 3.14 * D ^ 2 / 4.

The main dimensions of the jet furnace are presented in the table:

Parameter	Meaning
Drum height H	1.5D to 2D
The height of the heat-insulating coating of the drum	2/3H
The thickness of the heat-insulating coating of the drum	1/3D
Cross-sectional area of the primary chimney	From 0.045S to 0.065S (optimally - from 0.05S to 0.06S). The higher the primary chimney, the better.
Minimum clearance between the top edge of the primary chimney and the drum cover	70 mm. With a smaller value, the aerodynamic resistance of the gap for the gases passing through it will be excessively large.
Flame tube length and area	Length and area of the primary chimney
Sectional area of the blower	Half of the cross-sectional area of the primary chimney
Cross-sectional area of the external chimney	1.5S to 2S
The thickness of the adobe pillow under the flue with a stove bench	50–70 mm (if there are wooden boards under the bed - from 25 to 35 mm)
The height of the coating above the flue with a stove bench	150 mm. It is not recommended to reduce, otherwise the oven will accumulate less heat.
Height of the external chimney	at least 4 m

Particular importance is attached to the length of the flue with a stove bench. The maximum allowable indicators are shown in the table:

The volume of the secondary ash chamber is also an important indicator, depending on the volume of the drum and the primary chimney.

D (diameter)	Volume
300 mm	0.1x (Vk - Vpd)	Where Vk is the volume of the drum, Vpd - the volume of the primary chimney.
600 mm	0.05x(Vk - Vpd)

Building materials for the construction of a non-standard furnace

The production of jet heating equipment will require the presence of:

barrels with a volume of 200 liters and a diameter of 0.6 meters, an empty liquefied gas cylinder or tin buckets to build a furnace drum;
square or round steel pipes 2-3 mm thick, which are needed to create a blower, a combustion chamber and a primary chimney;
fireclay crushed stone and furnace clay as heat-insulating materials;
adobe, which serves as an outer coating layer;
fireclay bricks;
sand from the bottom of the river;
pieces of sheets of zinc-coated steel or aluminum for the manufacture of covers and doors;
asbestos or basalt cardboard, which performs the tasks of a sealant.

Of the tools for the construction of a rocket furnace, you will need a welding machine. And if you plan to make heating equipment out of bricks, you will have to take:

Master OK;
mortar blade;
pick hammer;
stitching;
an acute-angled sledgehammer;
level;
plumb;
roulette.

Preparing for the assembly of heating equipment

When choosing a place for a rocket furnace, they are guided by some rules:

reactive heating equipment is placed only in a room with an area of at least 16 m²;
without floorboards under the oven, equipment installation will be easier;
above the structure that gives heat, it is forbidden to place wooden beams;
if it is understood that the chimney will go through the ceilings, then the heating equipment is placed in the middle of the house;
the heat generator cannot be installed near the outer contour of the house, otherwise the room will lose heated air;
the jet device must not be placed near the walls and partitions of their wooden materials.

To make it convenient to put fuel in jet heating equipment, it is more reasonable to put it with the front side opposite the entrance. It is important to leave at least a meter of unoccupied space around the rocket stove.

IN small house builders advise allocating a place in the corner for the stove. In this case, the firebox should be directed in one direction, and the stove bench (if it is made) in the other.

The stove stands on a special platform that protects the floor from high temperatures.

Having found a suitable site for a rocket furnace, they begin to prepare it for construction work. If boards are laid on the floor in the house, then in the place where the equipment will be installed, they will need to be removed. A hole is dug under the open floor, the bottom of which must be pressed.

Before construction work, a special mortar should be mixed. It consists of sand and clay combined in a ratio of 1:1. Water will be needed so much that the building materials acquire the consistency of sour cream, that is, ¼ of the amount of dry ingredients.

Do-it-yourself step-by-step instructions for making

If it is planned to make a rocket furnace from a gas cylinder, then you can not be afraid of difficulties. The steps to create equipment from such building materials are quite simple:

from a cylinder with a volume of 50 liters, the upper part is cut off in order to build a kind of cap;
The balloon is cut at the top and bottom
focusing on the instructions in the drawing, all parts of the product are welded to each other, that is, a gas cylinder, a pipe with a diameter of 10 cm (future chimney), a pipe with a diameter of 7 cm (internal channel) and another pipe with a diameter of 15 cm (firebox);
Dimensions are in mm
the space between the two pipes is filled with a material that retains heat, for example, sand, which has been carefully calcined, that is, cleaned of organic substances;
legs are welded to give stability to the structure.

To build a rocket stove with a stove bench, which involves the use of bricks, you need to act differently:

The area for arranging the firebox is deepened by removing 10 cm of soil. The combustion chamber is formed from fireclay bricks. A formwork is created along the contour of the manufactured structure. To make the base strong, it is recommended to lay a reinforcing mesh or metal bars in it;
The platform will harden in about two days
The structure is poured liquid concrete. Then they wait for the solution to harden, and finish the job. Bricks are laid in a continuous line, creating a platform for the furnace. After that, the walls of the structure are formed, exposing several rows of brick blocks;
They equip the lower channel of the structure, while one line of bricks is laid across to block the combustion chamber. The blocks are placed, leaving the vertical channel and the opening of the firebox open;
Two sectors of the furnace at this stage of construction must be open
They find a body from an old boiler and cut off the top and bottom covers on it. At the bottom of the resulting pipe, a flange is installed through which a horizontal heat exchanger will pass. Parts need to be connected to each other with a continuous weld;
Work requires diligence
An outlet pipe is inserted into the barrel, after which they take a brush for metal and scrape rust from the walls of the container. The cleaned barrel is treated with a primer, and a little later - with paint that is resistant to high temperatures;
The horizontal chimney is connected by welding to the side outlet - the future ash pan. To facilitate its cleaning, a sealed flange is mounted;
Spread the flame tube of refractory bricks. At the same time, a channel with a height and width of 18 cm is formed inside the structure. While doing this, they constantly use building level, which allows you to control the verticality of the product;
The height of the pipe is predetermined
The flame tube is covered protective cover, and the resulting gaps are clogged with perlite. The lower area of the vertical channel is sealed with wet clay, the function of which is to prevent the heat-insulating material from spilling onto the floor;
From the boiler, on which the top and bottom were cut off, a fuel tank is formed. A handle must be welded to it;
To improve the appearance, the structure is treated with adobe putty, consisting of sawdust and raw clay. The first component of the composition serves in the same way as crushed stone in concrete, that is, it prevents cracking of the furnace walls. It is recommended to apply adobe putty on top of perlite backfill;
They create the facade of the furnace, for which the furnace circuit is laid out of stone, bricks, adobe and sand. The wrong side of the structure is filled with crushed stone, and the front side is filled with adobe mixture, which makes the surface perfectly even;
A casing made of a metal barrel is placed on the previously created base. The lower branch pipe of the tank is directed towards the bench. The bottom of the structure is treated with raw clay, which will ensure its tightness;
A channel from a corrugated pipe is brought to the combustion chamber. It will serve as a link between the firebox and the atmosphere from the outside;
At this stage, the oven looks almost finished.
A test kindling of the furnace is carried out, looking at how the gases are removed from the horizontal chimney. After that, the heat exchanger pipes are connected to the lower branch pipe installed on the red brick platform;
The furnace is supplemented with a pipe for removing smoke. The junction of the chimney and the heat generator is sealed with refractory coating and asbestos cord;
Using clay and adobe, the couch is given the desired shape. Only the horizontal section of the structure is left unsealed, which will then be used during cooking.
The furnace functions as a whole system

Design improvement

A stove bench with a flue inside is not the only option for upgrading a rocket furnace. The design can be improved with a water jacket connected to a heating system in which water circulates. It is desirable to give this part of the structure the appearance of a coil, created from a copper pipe, twisting on the chimney.

This design provides even more warmth.

Another way to improve the jet furnace is associated with the organization of the flow of heated secondary air into the flame tube. This will increase the efficiency of the heat generator, but will lead to deposits in the primary chimney large amount of soot. Therefore, it is better to make sure that the drum cover can be dismantled if necessary.

The subtleties of operating an unconventional furnace

The rocket furnace is heated by analogy with the upper combustion heat generator. It turns out that the kindling of equipment called a rocket must be carried out according to certain rules:

the main raw material for the furnace of the unit must be laid only after the structure has warmed up well, for which, first, sawdust or paper is placed and set on fire in the blowing sector;
they necessarily react to the muffling of the hum coming from the furnace - they put a large batch of fuel into the combustion chamber, which will ignite on its own from the red-hot residues of sawdust;
the process is closely monitored, that is, after laying firewood, the damper is fully opened, and after a while, when the equipment makes a hum, it is covered to produce a sound similar to rustling;
as necessary, the damper is covered more and more, otherwise the furnace will become filled with an excess volume of air, which will disrupt the pyrolysis inside the flame tube and lead to the creation of a strong hum.

Since the jet oven was originally designed for field use, its design is extremely simple. This allows you to cope with the manufacture of the unit by an ordinary home master. But, despite the apparent lightness, the rocket stove is supposed to be assembled, taking into account the correct ratio of parameters. Otherwise, the equipment will be unproductive.

Liked the article? Share it

Print article