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Do-it-yourself robinson oven drawings. Rocket stove: history, delusions, principle of operation, schemes, implementation, materials. Advantages and disadvantages of the rocket stove

For lovers of out-of-town trips, avid fishermen and summer residents, a compact mobile stove that fits easily into the trunk of a car will become indispensable. More recently, small collapsible stoves have appeared on the market, which have the very eloquent name "Robinson". It is quite possible to make a Robinson oven with your own hands, especially since in this case it will even cost much cheaper than ready-made version. The advantage of self-manufacturing this device is the possibility of upgrading, which will expand its capabilities.

It should be noted that on the basis of this simple design, stationary stoves for home and garden can also be made, so it can be called universal. If the goal is to independently manufacture a mobile oven of the Robinson type, then it is worth considering what configurations it can have, and only after that decide on the choice of model.

The design and principle of operation of the furnace

The Robinson oven has a so-called rocket design, and on the basis of which many models were created, which differ significantly from each other in size and even in functionality.

Conventional ones consist of a firebox connected to a chimney. The fuel tank can be arranged horizontally, vertically or at an angle, connected directly to the chimney, or have a horizontal section of pipe between these two elements, which extends the heated air path and creates an additional heated surface.

This diagram shows different options for the location of the rocket furnace firebox:

1 - The vertical firebox is connected to the chimney with a piece of pipe, which lengthens the path of hot air from the firebox to the outlet. The connecting section can be used as a hob.

2 - Vertical furnace, located next to the pipe, allows you to quickly heat up the entire structure.

3 - The firebox, fixed to the pipe at an angle, makes it more convenient to load fuel.

4 - Two vertical furnaces located on the sides of a pipe having larger size in section. This design will help to heat the container with the contents much faster, mounted on top of a special stand.

All rocket furnaces have approximately the same principle of operation. It lies in the fact that during the primary combustion of the fuel placed in the firebox, the gases formed, which have a significant energy potential, are afterburned in vertical section pipes. For this, a special channel of secondary air was made, which provides its supply, a kind of "suction", directly to the base of the vertical pipe. That is, the rocket furnace in this regard in a certain way resembles work. As a result, at the outlet of the oven, in its upper part, the maximum temperature is reached, which can be used to heat water or cook food.

On top of the pipe in the simplest configuration of the oven, a stationary or removable nozzle is mounted - for installing a container of water or other utensils.

The great advantage of the rocket furnace can be called its economy, since in order to achieve desired result You don't need a lot of fuel at all. In order for it to function well, a handful of dry wood chips or even dry grass is often enough.

Video: demonstration of the capabilities of the field rocket furnace "Robinson"

• The rocket stove installed for space heating works on the same principle. This design has been known since ancient times, and has been traditional in the homes of many eastern peoples.

With the help of these stoves, they not only heated the room - their warm stove bench was used as heated beds.

By the way, in our time, they are also in no hurry to abandon this design and use it for heating in private homes. In this model of the furnace, the section of the chimney pipe is significantly extended and passes under the entire stove bench, which transfers the heat of the combustion products. It turns out a kind of large "battery" of heating, capable of heating a fairly large area.

• Another option for a rocket oven could be a small brick construction, folded in a country house or on garden plot. Moreover, if it is laid out in the yard, as a temporary option, then the bricks do not even have to be fastened with mortar. The main thing is to observe the location of all its elements.

A similar model of oven is often offered in community survival presentations, which are quite common, for example, in North America. Such a furnace can be made in any created conditions. In extreme cases, ordinary stones found nearby are suitable for its arrangement, and large gaps between them can be sealed with ordinary earth.

• More complex, but functional design, based on the same principle of operation, is a rocket stove-stove, which will become an indispensable assistant in the country or in a private house in the summer. The large surface of the stove will allow you to cook several dishes at the same time or heat water, as well as save on electricity or other fuels, since even a large amount of firewood is not required to make the stove justify its purpose.

The hollow panel of the stove inside passes hot gases through its entire space, capable of heating it to very high temperatures. Then, the products of combustion are discharged into the chimney pipe located on the side opposite from the furnace bunker.

• And here is a portable version camp stove has quite small size, as it is made from an ordinary galvanized bucket, which is usually coated on top with heat-resistant paint.

Inside the bucket, a structure of two pipes is installed, welded together and performing the functions of a firebox and a chimney. Interior space bucket, between its walls and pipes, is filled with sand (in field conditions), or fine-grained expanded clay. Such a kind of "lining" will provide heating of the vertical pipe so that pyrolysis gases are actively burned in it. Thanks to this “layer”, significantly less fuel is required to cook food or warm water.

It is very important to calculate the correct gap, which should be formed between the stand for the container (in this case, made in the form of a lattice) and the pipe. Too large or small clearance will either reduce the heat transfer of the stove, or interfere with the normal process of combustion of gases.

• Similarly, you can do in the nth case, if you need a device for quickly heating a small amount of water, for example, for brewing tea in extreme or camping conditions. To do this, you can build a small stove from an ordinary metal can. In order to boil water with it or at least warm up a little, you need only a handful of wood chips or even dried grass.

The presented photo clearly shows that it is not difficult to make such a design. It is enough to have two large metal cans on hand, one of which will be used to make two tubes - vertical and horizontal, and the second will serve as an outer casing-shell.

Such a "baby" will quickly warm the water in extreme conditions.

A stand for a water container can easily be made from the bottom or lid of a jar by cutting out the middle of it, then making cuts with inside the resulting circle, and bending them down in the form of legs. This stand will fit perfectly on the edges of the jar. The stand can also be made from steel wire by carefully bending several pieces and fastening them together.

Camping stoves of the type "Robinson"

Today, various camping compact rocket-type stoves are on sale, having different names including Robinson. However, experienced master Having looked at the device of such a device, he will immediately understand its design and will be able to draw up a drawing according to which it will not be difficult to manufacture it.

It is clear that the manufacture of such furnaces will be available only to those home craftsmen who have the skills of plumbing and welding and have at their disposal advising equipment and tools.

Every good home owner should be familiar with welding technology!

In the daily life of a private house, there are very often situations when it is very difficult to do without welding. It is not enough to have a device - you need to have certain skills. We hope that a special article on our portal dedicated to the basics will be a good tutorial for beginners.

You need to know that all camping stoves operating according to the principle described above have common parameters that must be taken into account when drawing up a drawing diagram, otherwise failures may occur in the functioning of the structure. To such characteristic features include the following features:

• The vertical pipe must be at least twice as high as the length of the firebox.
• The height of the fuel bin, installed vertically, should be approximately equal to the length of the horizontal connecting section of the furnace and the width of the furnace opening.
• The best location for the furnace section will be to install it at an angle of 45 degrees, since the blower clearance is optimally located in it, and it is also convenient to put fuel in it.
• It is recommended that the cross section of the fuel hopper inlet be approximately equal to that of the vertical pipe.

The first version of the camp stove

Such a model of a camping stove is simple in design and manufacture and is very compact in size. It does not require a large amount of materials, and it can be done in just a few hours.

The oven has one important design feature- its lower part, which acts as the bottom of the fuel chamber (grate), is made movable, so it can be pulled out, laid on it right amount and push into the furnace bunker. If the chips are long, then the extended grate can be used as a stand for stacking them. In addition, the retractable grate greatly facilitates the periodic cleaning of the firebox.

For this model you will need:

Name of materials	Dimensions	Quantity
Square pipe	150×150×3, 450mm	1 PC.
	150×150×3, 300mm	1 PC.
steel strip	300×50×3mm	4 things.
	140×50×3mm	2 pcs.
Metal grate	300×140 mm	1 PC.
or steel bar for its manufacture	Ø 3÷5 mm	2.5 m

The work is carried out in stages and includes the following operations:

• Markings are made on blanks from square pipes, since one of their edges must be cut at an angle of 45 degrees. Then the "grinder" cuts are made.
• The next step of the pipe must be carefully welded together to make a kind of "boot".
• In the upper part of the vertical pipe, at its corners or in the middle of each side, cuts should be made 20 mm deep and 3.5 mm wide. They will install a stand for containers.
• Next, the stand itself is made. To do this, one of the strips 300 mm long is cut in half. On the second strip, you need to outline the middle and weld the prepared segments to it on both sides to get the shape of a cross.
• From the two remaining strips and short lengths of 140 mm, the frame of the retractable device is welded. Here it is necessary to make a fitting and take into account the fact that long strips should not be welded to the sides of short strips, but overlapped with them.
• On top of the finished frame spot welding the finished grate or steel rods cut along the length of the frame with a distance of 10 mm from each other are seized, they will act as a grate.
• Then, a stand for the container is installed on top of the pipe, and the grate is pushed into the furnace hopper. Now you can test the finished furnace.
• If the test measures were successful, then after the metal has cooled down, the furnace can be painted
• Although not provided for in this design, it is still recommended for the retractable frame to additionally weld the handle, which will help to more comfortably adjust its location.

The second version of the camp stove - "Antoshka"

This oven is a little more difficult to manufacture, as it has large quantity elements. However, the work is still quite doable if you prepare everything you need for this.

Rocket stove model "Antoshka"

The convenience of this design lies in the fact that it provides an additional heated plane. For example, on a stand located on a vertical pipe, you can install a container for cooking, and at the same time use an additional plane fixed above the furnace hopper to heat water.

For the manufacture of this model will require the following blanks:

Name of materials	Dimensions	Quantity
Square tube for the manufacture of a furnace bunker	150×150×3 mm, length 450 mm	1 PC.
Square tube for the manufacture of the lower blower chamber	150×150×3 mm, length 180 mm	1 PC.
Square tube for the vertical section of the furnace	100×100×3 mm, length 650 mm	1 PC.
Metal plate for the panel above the firebox	300×150×3 mm	1 PC.
Metal plate to cover the back of the firebox tube	150×150×3mm	1 PC.
Metal corner for stand	50×50×3, length 300 mm	1 PC.
	50×50×3, length 450 mm	1 PC.
Reinforcement or rod for stand-corners	Ø 8 mm, length 300 mm	4 things.
Fittings or rod for grate	Ø 8 mm, length 170 mm	8÷9 pcs.
Triangular metal gussets for installing the hob	Steel 3 mm. Dimensions are adjusted exactly after the stove is assembled.	2 pcs.

• A vertical pipe is marked, since its lower part must be cut at an angle of 30 degrees. A cut is made according to the markup.
• Then a pipe intended for a furnace bunker is taken, and a hole 120 × 100 mm in size is marked and cut in its rear upper plane. A hole is also cut out from the bottom side of the furnace pipe, but already 150 × 150 mm in size - to connect this part of the furnace with the blower chamber.
• In the next step, the back of the furnace bunker is welded with a plate prepared for this, and then segments of metal rods are welded to the bottom hole from the outside at a distance of 10 ÷ 12 mm from each other - this will be the grate of the furnace.
• Next, you need to make a blower chamber. To do this, a piece of a square pipe measuring 180 mm is taken, and a cut is marked on it at an angle of 30 degrees so that the size of the blower is 100 × 180 mm. The part must have a bottom and side walls, and its upper part will be welded under the grate of the furnace hopper on three sides.
• Now, for the comfortable carrying out of further work, the furnace must be placed on stands, which are made of metal corners, welded to the back of the combustion and blower chambers.
• The next step is to work on the top of the oven. A vertical furnace pipe is welded to the upper opening of the furnace. After that, the fitting of the top panel is done, and the corners of the triangles - stands are determined. Their configuration is drawn on paper, and then transferred to a metal sheet and cut out.
• The triangles are mounted on edge and welded to the vertical pipe and the "roof" of the brew bin. The triangular elements, together with the top plate, will create an airtight space above the firebox, which will make the metal panel more for a long time stay hot.
• Then, a plate measuring 300 × 150 × 3 mm is tried on and welded to the front upper edge of the furnace hole, the installed triangles-supports and the vertical pipe.
• Having finished with this part of the furnace, it remains only to weld the corners to the upper part of the vertical pipe, which act as a stand for containers. Prepared reinforcing bars 300 mm long must be bent at a right angle so that they have the same sides. The corners must be welded to the four sides of the pipe, raising them to the same height, so that their upper edge is located above the plane of the vertical pipe mouth at a height of approximately 30 ÷ 50 mm.
• After that, you can test the design, and then paint with heat-resistant paint.

Oven "Robinson"

The device purchased in the store does not have a door that allows you to adjust the intensity of the primary combustion in the firebox, and some home craftsmen repeat the Robinson factory model.

The Robinson oven can either be copied from the factory model, or some additions can be made

Other craftsmen who make the oven for themselves have tried to improve the design, making it more efficient, so you should pay special attention to such upgrades.

Variant copied from an industrial design

The main dimensional parameters of the Robinson stove

If a factory version of the furnace is chosen for self-manufacturing, then you can easily figure out its elements according to the drawing, especially since very few details are required:

- Metal box of the furnace hopper, made of steel sheet 3 mm. The total size of the hopper is 150 × 100 × 300 mm. It is assembled from five plates 2 pcs. 300×150 mm; 2 pcs. 100×300 mm and 1 pc. 100×150 mm.

— Metal plate 150×200×3 mm to separate the blower channel from the combustion chamber.

- A metal pipe with a diameter of 100 mm and a height of 600 mm.

- Pieces of reinforcement with a diameter of 7 ÷ 8 mm and a length of 120 mm - for the manufacture of a grate.

- Three rings 25÷30 mm high, cut from a pipe of the same diameter as the vertical riser -100 mm, and one ring with a diameter of 110 mm;

- three nuts d13, which are welded to the bottom of the furnace hopper and are designed for screwing the legs;

- three identical pieces of a steel bar with a thread cut into them, or finished studs (long bolts) with an M8 thread.

It should also be clarified here that the upper stand may have a different configuration, since it does not play a special role in the efficiency of the device. The main thing is that this element does not have a solid upper plane and is not located close to the pipe mouth, otherwise there will be no proper draft in the furnace, and the fuel will not burn with the required intensity.

To make a stand of just this shape, you need to cut three rings prepared from a pipe in half, and then weld them to a metal rod.

Work on the manufacture of such a furnace model is slightly complicated by the fact that two elements of different shapes are used - a rectangular box and a round pipe. Assembly is performed as follows:

• First you need to prepare a plate that separates the firebox from the blower. To do this, pieces of reinforcement are welded onto the plate, at a distance of about 10 mm from each other - this is how a grate will be obtained.
• Then the finished plate with the grate must be welded to the side and rear walls of the furnace. It is welded, departing from the lower edge of 30 ÷ 35 mm. The plate must be installed exactly horizontally.
• Next, the corner joints of the rear and side walls of the chamber are welded.
• The next step is to weld the bottom part to the box, and to it - three nuts for screwing the legs.
• Further, with the help of welding, the "roof" of the combustion chamber is fixed.
• Then, the pipe is marked, as it must be cut at an angle of 30 degrees. After the cut, instead of a circle in the section, an oval is obtained.
• The pipe must be attached with this oval to the middle of the surface of the “roof”, the welded box, in its lowest part and circled with a marker. A hole must be cut along this line in the plate, since a vertical pipe must be welded into it. You can also cut this shape using a high current welding machine, or a metal cutting machine.
• Next, a pipe is welded into the hole. A stand is put on it to install the container. The legs are screwed to the structure, and a test is carried out, and then, if desired, staining.

An improved version of the Robinson furnace

This version of the stove repeats the design of the previous model, but differs in that the master installed a door on the furnace hole. In this case, the door swings up. But, it must be said that this method of opening is also not entirely convenient, since with the help of such a valve it is impossible to precisely regulate the thrust - in principle, it has only two positions. The best option there will be a damper moving up and down or left - right, which is installed in corners welded to the walls, 10 × 10 or 15 × 15 mm in size.

Robinson model, supplemented with a fuel chamber cover

In addition to this difference from the previous version of the furnace, there are several others:

• For the manufacture of the furnace bunker, steel was used, 5 mm thick.
• A square pipe was used for the vertical section.
• Corners, decorative metal balls, as in this case, are used as a stand for containers, or you can come up with your own version of this element, which will be the easiest to manufacture.
• The stand for the oven itself is also different from the above options. It consists of a steel plate to which a leg made from a piece of reinforcement is welded.

To make this oven model you need to prepare:

- A pipe for the manufacture of a furnace bunker 400 mm long, with a section size of 160 × 160 mm.

- A pipe for a chimney 600 mm long and 120 × 120 mm in size;

- A panel separating the firebox and the blower gap. It is made of a steel sheet of 5 mm and a metal bar of 7÷8 mm. Its size is 155×300 mm.

- A plate with a size of 180 × 350 mm - for a stand under the oven;

— metal panel size 160×100 mm.

The presented photographs show the material that is suitable for, as well as its cutting process. The cut part from the part of the vertical pipe can be used instead of the legs on the stove stand.

Jumper in the fuel chamber - to create a lower air channel

• A dividing panel with a grate is fixed inside the firebox.
• Then, the back wall of the furnace bunker is closed and a vertical pipe is welded.
• Next, the entire structure must be installed and fixed by welding on a metal plate. As a support, a piece of metal rod or a triangular part cut from the chimney pipe is mounted in front.
• On the upper edge of the vertical pipe, segments of corners are fixed at the corners by spot welding, which will become a stand for the container. They should have a height above the pipe of 40÷50 mm.
• Further, a door is installed on the inlet furnace opening (on hinges, as in this case, or in the form of a sliding panel in a frame of corners).
• The design is being tested. After that, the welding seams are cleaned, and the furnace is covered with heat-resistant paint for metal, which will not only make the device more accurate, but also prevent the appearance and spread of corrosion centers.

For someone who has the skills to work with various locksmith tools and, it will not be difficult to make one of the variants of the Robinson type furnace. The whole process of preparing parts and the assembly itself does not take much time, but the furnace will last a long time and become an indispensable assistant in various situations.

Therefore, if it is not possible to lay down a stationary heating structure in a country house or purchase a finished cast-iron or steel stove, then Robinson is exactly what you need. Moreover, its manufacture does not require a large amount of materials, and a very small amount of any available natural fuel is consumed to obtain the desired effect.

Video: homemade rocket-type metal oven

You can make a rocket furnace yourself using ordinary steel The rocket stove is widely known throughout as a long-burning solid fuel heating structure. To achieve the maximum efficiency had to work hard. Oven on liquid fuel is able to give all its energy, but wood is more difficult to process. To unlock the full potential of the tree, a chamber for afterburning gases was equipped in jet furnaces.

• • The principle of operation of the rocket furnace long burning
  • Do-it-yourself rocket stove: advantages, drawings, disadvantages
  • Blueprints jet furnace from a gas cylinder and other types
  • Do-it-yourself drawings of the Ognivo stove and other models
  • Assembling a do-it-yourself jet furnace for heating
  • Advanced Water Loop Rocket Furnace
  • Do-it-yourself rocket furnace drawings (video)
  • Examples of a rocket stove (photo ideas)

The Shirokov-Khramtsov rocket or jet furnace got its name not because of its connection with space. The point is the shape of the device and the noise that is created during operation, reminiscent of the operation of a rocket. But this sound indicates improper use of the oven.

Types of long-burning rocket furnaces:

• Portable (mobile);
• Stationary (for heating).

The most popular rocket model is the Robinson. It is often used on hikes. Thanks to a small portable apparatus, you can understand the principle of operation of jet furnaces. The shape of the oven resembles the letter "L".

If the oven is too noisy and hums during operation, then this mode is inefficient and expensive. Normally, there should be a quiet sound, a little rustling.

The jet furnace has a receiving hopper. This is the horizontal part of the pipe. A thrust arises in the channel itself, it is it that affects the intensity of combustion, which warms up the body. That is why it is advised to limit the supply of oxygen. Otherwise, the firewood will quickly burn out and all the heat will evaporate.

A long-burning rocket stove is often used to heat garages and utility rooms.

The oven is working jet thrust due to the natural flow of hot air. The higher the temperature of the furnace walls, the better the wood burns. This allows you to quickly heat water in a large container, which is indispensable on a road trip. If you equip the pipe with thermal insulation, then after warming up, you can burn thick logs.

Do-it-yourself rocket stove: advantages, drawings, disadvantages

If desired, the conventional design of the furnace can be improved. So the potbelly stove loses a lot of heat, but by equipping the device with a water circuit or brickwork can solve these problems. For all these manipulations, drawings are made.

Advantages of jet ovens:

1. Simple and cost effective design. You can use improvised materials, without significant financial costs. All work can be done by hand, special knowledge and skills are not required.
2. You can independently control combustion by choosing the desired intensity.
3. High efficiency. In general, it all depends on the quality of the installation. The main thing is to take away the maximum energy from the flue gases.

But such a simple and convenient design has significant drawbacks. So you need to select a special fuel for the potbelly stove. Wet firewood must not be used, otherwise pyrolysis will not occur. The furnace may begin to smoke profusely, and all gases will go into the house. In addition, the rocket furnace requires increased safety requirements.

The most popular portable model is the Robinson rocket stove. It was modified and a grate was added.

Homemade jet stoves are not used for heating baths. They are ineffective in infrared light, which plays an important role in the steam room. Surface structures have a small heating area, so they cannot heat the bath.

Drawings of a jet furnace from a gas cylinder and other types

Long-burning furnaces are divided into stationary and mobile. Mobile stoves are used in hiking, picnics, outdoors for heating and cooking. Stationary ones are used to heat the house, outbuildings, greenhouses, garages. In this case, 4 types of structures are distinguished.

Types of jet furnaces:

• Homemade camp stove metal pipes, buckets, cans;
• Reactive design from a gas cylinder;
• Brick oven with a metal container;
• Stove with bed.

Drawings of a jet furnace from a gas cylinder can be downloaded on the Internet or made independently by hand

The portable structure is equipped with pipe sections. The only difference concerns the installed partition for the ash pan. For the lower part, a grate can be used.

A device from a gas cylinder is more difficult to build, but significantly increases efficiency. For installation of the structure, a barrel or gas bottle. Firewood in the firebox burns out due to the influx of oxygen by loading through a special window.

The gases burn out in the pipe, which is located inside the structure, due to the supply of secondary air. The effect is enhanced by warming the inner chamber. Hot air is placed in the hood, and then into the outer chamber. The products of combustion are removed through the chimney.

To create draft, the top of the chimney is placed 4 cm above the loading window.

The combined brick and metal model is a stationary structure. Due to the high heat capacity, the wood stove accumulates and releases heat for several hours. That is why this design is used to heat residential premises.

A rocket assembly with a bed is an advanced device that is able to retain heat longer. Since part of the heat exits through the chimney, we increased its length. Due to the rapid excision of hot gases and a larger chimney, this problem was solved.

This is how massive stoves with a stove bench are obtained, which are similar to a sofa or bed. These are stationary devices made of brick or stone. Thanks to its unique design, the stove is able to retain heat all night.

Do-it-yourself drawings of the Ognivo stove and other models

It is best to make small ones with your own hands. portable structures: rocket "Flint" and "Robinson". It is easy to perform the calculation, and the work will require cutting profile pipes and metal welding skills. Dimensions may differ from the drawing, it's not scary. It's important to keep the proportions.

To increase the intensity of combustion, it is advised to add improvised nozzles to the design. Secondary air for afterburning will flow there.

Stationary rocket stoves are made from a gas cylinder or a metal barrel. These elements act as a body. Inside, the stove is equipped with smaller pipes or fireclay bricks. From the cylinder, you can make both a stationary unit and a mobile one.

Scheme of a continuous combustion furnace:

• Chimney;
• Cap;
• insulation;
• loading bunker;
• Burning zone;
• Afterburning zone.

The Ognevo furnace can be bought in a specialized store at a fairly reasonable price.

It can be difficult to calculate a rocket furnace, because there is no exact methodology. You should pay attention to the checked finished drawings. It is necessary to determine the size of the heating equipment for a particular room.

Assembling a do-it-yourself jet furnace for heating

The construction of the furnace begins with preparatory work. First you need to decide on the place of construction. It is chosen based on the requirements that apply to solid fuel structures: wood or coal.

When you have decided on a place, you need to properly prepare it for construction. The wooden floor under the stove is dismantled. They dig a small pit and tamp the bottom.

In a small room, a jet furnace is placed in the corner. The loading bunker occupies one side, and the lounger the other.

The barrel or cylinder must also be prepared for installation. To do this, they cut off the lid and the tap. Then the structure is cleaned. Next, prepare the solution.

Stages of construction of a jet furnace with a bench:

1. The bottom of the dug pit is laid out with fireclay bricks. Formwork is made along the contour of the recess. Perform reinforcement.
2. Lay out the base and pour concrete. After a day, when the concrete hardens, further work begins.
3. The base of the stove is laid out from fireclay bricks. Raise the side walls, make the lower channel.
4. The combustion chamber is covered with brick. There are two holes on the sides. One is for the firebox, the second is for the vertical pipe (riser).
5. The metal case is equipped with a flange into which the horizontal channel of the stove will enter. All seams must be airtight, well sealed.
6. A side outlet is attached to the horizontal pipe, which serves as an ash pan.
7. A fire tube is made of brick. As a rule, it is square.
8. The flame tube is equipped with a casing. The gaps are filled with perlite.
9. Installation of the cap is made from the cut off part of the barrel or cylinder. It is equipped with a handle.
10. Equip the furnace body with brick or stone.
11. Equip the front of the furnace. Lay out the necessary contour.
12. A prepared barrel is placed on the base. The lower part must be sealed with clay.
13. With the help of a corrugated pipe, a channel is formed that connects the firebox with the street.
14. The pipes of the heat exchanger are connected to the lower pipe.
15. Install a chimney. All elements must be sealed using asbestos cord and refractory coating.

To properly assemble a jet furnace with your own hands, you should first watch the training video and study the recommendations of experts

Advanced Water Loop Rocket Furnace

A long-burning cauldron can be obtained by equipping the furnace with a water jacket. Water heating may not be efficient enough. The fact is that the bulk of the warm air enters the room and containers on the hobs. To create a rocket cauldron, it is necessary to give up the possibility of cooking on a stove.

Materials required for equipping a stove with a water circuit:

1. fireclay bricks and masonry mortar;
2. Steel pipe (diameter 7 cm);
3. Barrel or cylinder;
4. insulation;
5. Sheet steel and a barrel of a smaller diameter than for the hull to create a water jacket;
6. Chimney (diameter 10 cm);
7. Details for the heat accumulator (tank, pipes, connecting pipe).

A characteristic feature of rocket furnaces with a water circuit is that the insulation of the vertical part ensures the combustion of pyrolysis gases. Wherein warm air is sent to a coil with a water circuit and gives off heat to the stove. Even when all the fuel has burned out, warm air will still be supplied to the heating circuit.

Do-it-yourself rocket furnace drawings (video)

Jet oven stove benches are widely known among the people. They were used even by Korea, China, England and the population of Japan. The Chinese stove differed from the rest in the ability to heat the entire floor. But the Russian counterpart is in no way inferior. Thanks to useful innovations, the stove is able to keep heat for a long time.

Examples of a rocket stove (photo ideas)

Not so long ago, very compact portable Robinson stoves appeared on the market, designed for cooking in field conditions: hunting, fishing, in the country. No matter how much it costs, making it yourself is much cheaper: it will take several pieces of a square-section pipe, a small piece of sheet steel for the blower door, rods for making legs and a grate. Everything is so simple that with a little experience in welding, it can be welded in a couple of hours. In the article, we will publish the available drawings, show several options for finished furnaces indicating the dimensions and materials used, and post a video lesson on the principles of their construction. Based on these materials, you can make a Robinson oven with your own hands.

Rocket furnaces are attractive due to their simplicity of design and efficiency. But, behind the seeming simplicity, there is an exact calculation. It is very undesirable to deviate in size: everything will stop working at all or fuel combustion will be extremely inefficient.

General principles

The portable portable oven "Robinson" was made on the basis of a heating rocket stove. The same principle is applied: firewood burns in the bunker-fuel compartment, the fire, due to the air flow, enters the combustion zone - a horizontal section of the pipe and partially rises up the chimney. First, until the furnace is warmed up, all the energy is spent on heating the chimney. Then, when it warms up, gases from high temperatures ignite again, secondary combustion of gases occurs. The modernized ones are arranged according to the same principle.

In the Robinson oven, everything is a little simpler: we do not need to heat the room. Its main task is to heat water and cook food. But the principles remain the same: the fire should heat up the chimney, and its length should be enough to burn the gases. Therefore, for normal performance, adhere to the following proportions:

• The length of the chimney must be at least 2 lengths of the horizontal (inclined) section.
• The height of the fuel compartment is approximately equal to the length of the horizontal section. Therefore, in the Robinson furnace, the firebox is made at an angle of 45 °, although the fuel compartment can be located at an angle of 90 °, but it is not very convenient to lay fuel in this way.
• The cross section of the chimney must not be smaller sizes firebox.

Robinson oven device: drawings and dimensions

In the original, "Robinson" was welded from a profile pipe 150 * 100 mm. Homemade similar stoves are made from a pipe of close diameter. Sometimes the fuel compartment is made from a piece of a profile pipe, and the chimney is made from a round one. At the same time, it is important that the cross section of the chimney is not less than that of the firebox, otherwise reverse draft may occur.

Below we lay out the drawings of the Robinson rocket furnace indicating the most common sizes: a profile pipe 150 * 150 mm, a firebox 30 cm long, a chimney of at least 60 cm. In general, with this size of the firebox, it can be up to 90 cm, but keeping in mind that this is still a hiking option, we indicate the minimum possible length.

A drawing of a Robinson rocket furnace for making do-it-yourself drawings

The legs are made of threaded rod, installed in place and tightened with nuts. This option is the most compact, but unscrewing / screwing the legs to the smoked iron is not the best thing to do. Alternatives supports: welded to the bottom steel sheet or fixed legs. They do not need to be screwed, but they take up more space in the trunk.

In the case of the original Robinson oven, it does not have a combustion air duct and there is no combustion control cover. In home-made ones, there is improvement: in the lower part of the fuel compartment, a plate is welded, ending with a grate. Fuel is placed on this plate. The slot at the bottom allows oxygen to be supplied directly to the combustion zone. To regulate the intensity of combustion, a damper cover is welded to the fuel compartment. In size, it is slightly wider than the fuel compartment (156.4 mm in the drawing with a firebox width of 140 mm). It should not completely cover it - otherwise the fire will die out. They make it smaller in size than the firebox or build in a slide gate.

Do-it-yourself Robinson oven: two photos and three video options

Craftsmen make small camping rocket furnaces from different pieces of metal. In the photo below you see what happened - a finished Robinson oven, made by craftsmen from Penza with their own hands. Three small sections of a profile pipe 160 * 160 mm were used, from which the furnace compartment was welded. Its total length turned out to be 40 cm. A single piece of pipe 120 * 120 mm 60 cm long was used for the chimney. In the furnace, the ash pan is welded from 8 mm sheet metal and 12 mm steel bar. Instead of legs, a metal plate is welded: thickness 8 mm, dimensions 180*350 mm.

This is the finished Robinson oven and what the master welded it from (To increase the size of the picture, click on it with the left mouse button)

According to the author: a melted stove burns well, does not smoke or act up. Only before loading with "serious" fuel: branches and chips, it needs to be heated with paper, hay, dry grass or very thin branches. When the pipe warms up, you can lay more “thick firewood”.

Difficulties with kindling a cold furnace are generally characteristic of rocket furnaces. In this case, we also have a narrowed chimney, which makes kindling more problematic.

The second version of a home-made rocket-type camp stove is made of two profile pipes: 160 * 160 mm 30 cm long for the furnace and 120 * 120 mm 60 cm long for the chimney (it is better to take no smaller section - the draft will be better). 5 mm steel was used for the ash pan, door and stand. The ash pan is cut to half the length of the firebox, reinforcing bars of 12 mm in diameter are welded to the plate. The lid does not reach the ash pan plate by about 2 cm; a large diameter nut is used instead of a handle. Base plate dimensions 20*30 cm.

Do-it-yourself Robinson oven materials and manufacturing process (To increase the size of the picture, click on it with the left mouse button)

To make it convenient to put the dishes and so that the smoke has somewhere to go, balls from the CV joint are welded at the corners of the pipe. This option turned out to be more convenient than the one proposed in the original (three rings welded together) - you can put dishes with a round bottom on such a stove - a cauldron, for example. Hunters and fishermen most often have this utensil, and not pans with a flat bottom. The kettle also becomes excellent: three liters of water in it boils in 20 minutes. The heat is sufficient for frying meat and other cooking tasks.

Portable oven Robinson: testing in the garage and on a three-day hunt (To increase the size of the picture, click on it with the left mouse button)

This video is about two rocket ovens: the already familiar home-made Robinson and a mini-stove made from cans of different diameters. This mini-stove works on the same principle, but the dimensions are more than compact.

And this video story is for those who want to make a heating and cooking rocket stove. It was also made according to the type of Robinson furnace, but with a heat-insulated casing.

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 the air in a room is called a rocket stove or a jet stove, because during operation, in case of excessive air intake, it makes special sounds. This noise can be mistaken for the roar of a 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 bench is equipped behind the rear wall of the oven

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 cylinder from under liquefied gas or buckets of tin to build a furnace drum;
• square or round pipes from steel 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 welding machine. And if you plan to do heating equipment from bricks, you 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 intended that the chimney will go through 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 oven stands on a special platform that protects against high temperature floor

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 works a special solution 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:

1. 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

2. 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

3. 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;
4. 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:

1. 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

2. 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;
3. 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

4. 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

5. 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;
6. The horizontal chimney is connected by welding to the side outlet - the future ash pan. To facilitate its cleaning, a sealed flange is mounted;
7. Lay out the flame tube from 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 the building level, which allows you to control the verticality of the product;

   The height of the pipe is predetermined

8. The flame tube is covered with a protective casing, 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;
9. From the boiler, on which the top and bottom were cut off, a fuel tank is formed. A handle must be welded to it;
10. 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;
11. 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;
12. 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;
13. 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.

14. 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;
15. 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;
16. 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 heating system in which water circulates. It is desirable to give this part of the structure the appearance of a coil, created from copper pipe swirling 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

A rocket furnace is heated by analogy with a heat generator top burning. 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 should 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.

Among the variety of wood stoves special attention deserves such a heating device as a homemade rocket stove. It is distinguished by an original design that does not require expensive materials and components in the manufacture. Any person can make such a stove, at least a little bit versed in the drawings and able to work with his hands. Our article should come to the aid of such home craftsmen, where we will talk about the design and principle of operation of the rocket stove. Here, recommendations will be given on its manufacture from various materials.

The principle of operation of the rocket furnace

Although the rocket stove device is quite simple, it successfully uses two whole principles of operation borrowed from other types of solid fuel heaters:

• the principle of afterburning wood gases released during combustion (pyrolysis);
• the principle of free flow of gases through the channels (without prompting from the natural draft of the chimney).

Note. In protozoa rocket stoves for cooking, including the portable type, only the second principle applies, since favorable conditions are not created for the pyrolysis process to proceed in them.

First, we will analyze the design of direct-burning rocket stoves, designed only for cooking food. Here, a short horizontal section of the pipe serves as a firebox, which then turns upward. The design is simple to disgrace, as shown in the figure:

Fuel is put into the pipe and ignited, resulting in an upward flow of hot gases, which tends to rise along the vertical section and go outside. Here, at the cut of the pipe, a container for food or water is installed. Of course, a gap is provided between the pan and the pipe for the exit of combustion products. This is achieved through various metal supports.

For reference. The above rocket furnace device is one of the first. It is because of the nozzle turned up with a flame escaping from it that the device was called a rocket.

Since it is impossible to heat the premises with such a unit, the design of the heating rocket furnace was supplemented with a heat exchanger and channels for removing flue gases. To keep a high temperature on the vertical section of the pipe, it is insulated with any refractory material. Further, for intensive heat extraction, the nozzle is covered from above with a cap, for example, a conventional metal barrel. At the bottom of the firing horizontal pipe a separate channel for supplying secondary air is made.

Now the principle of operation of the rocket furnace looks a little different. Firstly, at the end of the horizontal fire channel, pyrolysis gases are afterburned due to the inflow of secondary air. Secondly, the products of combustion, which have a high temperature, accumulate under the top of the cap (barrel), creating some excess pressure. As heat is transferred to the outside through the metal walls, these gases cool down and rush down.

Since the cooling gases are supported from below by a new hot stream, they cannot descend in the same way, but pass through the space between the walls of the pipe and the barrel, safely exiting into the chimney channel. The flow of processes is well reflected in the scheme of the rocket furnace:

So, thanks to pyrolysis, the efficiency of wood combustion increases, and the use of free gas flow creates a self-regulating system that limits the flow of fresh air into the firebox. The air mixture is supplied as the combustion products under the hood cool down, making room for its new portion. The excess pressure of hot gases "pushes" the cooled part out, so the operation of the furnace depends little on the presence of draft in the chimney.

Efficient heat extraction

The gases entering the chimney are still at a high temperature. Just throwing them out is impractical, everyone will understand that the efficiency of such an installation will be too low. Taking advantage of the fact that the rocket stove literally pushes the products of combustion out, the craftsmen came up with 2 ways to extract heat:

• passing gases through the channels arranged under the bench;
• installing a water circuit on the furnace.

A rocket furnace with a water circuit is made without a hood, the force of the upward flow of combustion products is used in a multi-pass heat exchanger made of metal. It is not recommended to introduce a coil with water into the gas flow, it will not last long due to too high a temperature. It would be better to make water jacket with metal fins inside the flue, as shown in the diagram:

Another way is to lay out horizontal chimney channels from bricks directly on the floor surface and arrange a chic heated adobe couch on top by connecting a rocket-type stove to it. Here, the correct selection of the length of the channels is important so that there is enough excess pressure to overcome them, otherwise you still have to take care of the organization of natural draft.

Advantages and disadvantages

Homemade long-burning rocket stoves have many admirers, and here are the reasons:

• simplicity and low cost installation: to build such a thermal device, you do not need to incur high costs for the purchase of expensive materials, fixtures and fittings. Experience in the furnace business is also required minimal;
• self-regulation and undemanding to the natural draft of the chimney;
• The efficiency of the furnace - rocket is a variable value and largely depends on the design, the main thing is to select as much as possible thermal energy at flue gases;
• fuel can be added "on the go".

Despite the attractiveness and simplicity of the unit, heating with a rocket stove has its negative points. It is a mistake to think that you can shove firewood of any quality into the firebox. Wet wood will not required temperature in the chamber, the pyrolysis process will not proceed. In the worst case, the smoke from the stove can pour into the room. Also, the “rocket” needs constant supervision, especially in terms of fire safety.

Do-it-yourself rocket stoves are of little use for a bath, because they give off relatively little heat in the infrared range, which is very important for a steam room. The surfaces of the stove that radiate heat are too small and it will not be possible to heat the bath properly.

For reference. A factory-made Robinson metal rocket furnace is often used as a portable heat source. The craftsmen were not at a loss here either and quickly modernized this product, having done the same, only with a grate.

balloon stove

This is one of the most simple options, you can use the drawing below to implement it. A propane tank with a diameter of 300 mm will serve as an excellent cap, and the role of a firebox and a hopper will play a role steel pipe size 150 mm. The internal vertical channel is made of a pipe with a diameter of 70 mm, and a chimney - 100 mm.

The design is completely welded, the pipes are cut to the required length, and the upper part of the cylinder is cut off. Then the parts are welded according to the drawings, only the opening between the vertical pipes with a diameter of 70 and 150 mm is filled with loose heat-insulating material. Perlite or vermiculite can act as such, in extreme cases - ordinary sand.

If there is an opportunity and desire to make a more powerful rocket furnace, then a standard 200-liter barrel is used as a cap, then the dimensions of all parts also increase. The working inner pipe is accepted with a diameter of 129 mm (or profile 120 x 120 mm), and the outer one - with a size of 450 mm. It is difficult to pick up a pipe of this diameter, so they usually find another barrel of a smaller capacity and cut off its bottom.

The entire rocket furnace from a gas cylinder assembly is not very heavy, so it is not necessary to arrange a massive foundation for it. When the unit is placed on the floor, legs are welded to it, and if a stove bench is subsequently planned, then the structure will have to be coated with a refractory compound, and then the outer lining should be made. Then basalt cardboard and a sheet of roofing iron are laid on the floor from below.

brick oven

In terms of its design, a brick rocket furnace is not much different from a metal one, but it requires a lot of labor. The difference is that all fire channels of the unit are made of fireclay bricks, and the cap is made from the same barrel.

The entire structure, except for the protruding cap, is recommended to be lowered below the floor level, for which a shallow hole is dug. Its bottom is compacted, and then a small concrete foundation 100 mm thick. After it hardens, laying begins, using a solution of refractory clay. iron barrel without a bottom, the cavity between it and the brick is covered with insulation.

The end of the structure is coated with the same solution, and then the largest barrel is put on top - a cap. A chimney pipe is welded to its lower part; drawings of a rocket furnace are used to clarify all sizes.

Conclusion

For all its advantages, a do-it-yourself rocket stove cannot serve as a full-fledged source of heat for heating the whole house. It makes sense to start such a construction when it is necessary to organize heating small dacha or another similar building, especially since the "rocket" is not afraid of periodic work.