Will it really flare up and take off? Rocket stove: what is it, its features, drawings of the device

A rocket stove is one of the types of cooking stoves that run on wood fuel. Stationary stove models are also used for heating.

It got its name from the hum that is heard at the beginning of the heating. When the combustion mode is correct, it dies down. The shape of the structure also resembles a rocket – vertical cylinderThe furnace is also called a reactive furnace.

A similar principle was used in Korea and China to heat homes in winter. Travelers in the past noted that significantly less firewood was used than in a traditional Russian village.

Jet furnaces, product drawings

Rocket stoves are divided into: portable and stationary. The first devices are smaller in size and have a simpler design. It resembles an inverted letter "G". Fuel is placed in the lower crossbar. Due to the vertical shape of the main part, natural draft occurs.

Photo 1. Drawing and finished version of a metal rocket stove with dimensions indicated, left and top view.

As the temperature rises, the device becomes more efficient. It has enough power to quickly heat water for cooking. for several people. To prevent the firewood from burning out too quickly, you need to regulate the draft in the stove. To do this, close or completely close the fuel door.

Portable jet furnaces are produced in series. The most popular models "Robinson" and "Ognivo"Due to the simplicity of the design, you can make them yourself.

Stationary devices are designed somewhat more complex. In the hood, the air ducts are made in such a way that the heated air first rises upwards. Transferring heat to the internal walls, it gradually descends downwards. Then it passes into the chimney located at the bottom.

Photo 2. Drawing of a rocket stove made of brick and a metal barrel. The arrows show the parts of the device.

This oven is quite economical to use, since it burns not only wood, but also pyrolysis gases. The stove's flue is sometimes not taken out of the room immediately, but is carried out inside a stove bench made of brick and/or clay. Such a bench heats the room to a comfortable temperature. The structure itself is made from large diameter pipes, barrels or bricks.

Long burning rocket stove made of bricks

Since the brick accumulates heat, such devices are well suited for heating rooms. Considering the duration of combustion, one load of fuel is enough to maintain a comfortable temperature for 6-8 hours.

Sometimes the stove is made entirely of brick. Only the fittings (doors) will need to be made of steel or cast iron. In other cases, the outer part of the stove cap is made of a barrel or a wide pipe.

Device from a pipe with a water circuit, diagram

The furnace structure is welded from iron pipes of different diameters.

If you plan to heat a small room, the stove cap can be made from waste wood. gas cylinder.

In a house of more impressive dimensions, this would be suitable for these purposes. iron barrel.

If you install a water circuit on the stove chimney, you can get a long-burning boiler that will heat the room well.

The water circuit is usually made from gas cylinders.

"Robinson"

This is a simple and reliable camping stove. It is quite capable quickly (in 10 minutes) boil a liter water. There is no need to add firewood.

The design was developed in the last century, but thanks to its advantages it is still used today. "Robinson" is produced in series, but It is not difficult to assemble it yourself.

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"Flint"

This type of stove is similar to the previous version. But the firebox in it shorter and located at a more obtuse angle in relation to the chimney. Such a stove resembles an inverted letter "G" in shape.

How to Make a Rocket Stove with Your Own Hands

He has several stages — selection of a suitable design; selection of materials and tools; direct manufacturing.

Selecting a project

When choosing a suitable project, consider the following factors:

1. The purpose of the stove is whether it is only needed for cooking or also for heating the room.
2. Available materials.
3. Approximate power. It determines how many servings of food or how much space the device will be enough for.

Materials

For a brick structure you will need:

• fireclay (refractory) brick;
• refractory mixture for masonry;
• concrete mortar (for the base);
• mineral wool;
• asbestos;
• a whole barrel or empty gas cylinder for the cap (optional);
• stove doors - firebox and ash pan;
• if the cap is brick - a thick sheet of stainless steel according to the size of its cross-section.

The following materials are used for finishing the stove:

• fireproof paint;
• clay;
• stones;
• etc.

For metal, take:

1. A round metal pipe with a diameter about 150 mm and length no more than 90 mm (better about 60 mm).
2. Profiled (rectangular) pipe with a cross-section of 100-120 mm and length about a third round.
3. Instead of a rectangular pipe, you can take a sheet of steel with a thickness 3 mm.
4. 3 nuts.
5. Steel rods, plates or long bolts for legs.

Preparing the tools

For making you will need:

• trowel;
• level;
• welding machine;
• bayonet shovel;
• metal brush;
• level;
• Bulgarian.

Manufacturing, dimensions of devices

There are many variations on this theme. Let's consider the production two fundamentally different types of jet stove. This is a brick oven with a bench, which is used indoors, and a camping oven, assembled from metal. If necessary, changes are made, combinations of methods are possible (for example, a heating and cooking device, but made of pipes covered with clay or stones).

How to make a brick oven with a stove bench

First stage — foundation device. A rectangular hole is dug for it, which is then filled with concrete.

For strength, it is better to install reinforcement in advance. The base must be strictly horizontal.

After the concrete solution has hardened brick laying begins. The outer walls are located along the perimeter of the concrete platform. A combustion chamber is formed. On one side of it there is a firebox with an opening for loading firewood. On the other side there are air ducts.

In the combustion chamber also leave a hole for cleaning out ash, which is closed with a door. When this chamber is ready, a metal barrel is put on it. The gaps are filled with insulation, for example, mineral wool.

If the barrel is not used, it is installed on top cooking stoveAn asbestos insulation is placed underneath it.

The chimney is connected to the air duct and is discharged outside.

Then ready the device is decorated. For example, it is coated with clay and covered with paint. Another option is to leave the brickwork.

Jet Stove for Hiking

It consists of two compartments, connected to each other. To assemble it, first cut the pipes at an angle in 45°If you took a metal sheet instead of the second pipe, cut it into the following parts:

• two with sides 300 mm and 150 mm;
• two - 300mm and 100mm;
• and one 150 and 100 mm.

Photo 3. Ready-made jet stove for hiking. The device is made of metal pipes.

Then weld them together. You will also need another plate to separate the fuel compartment, its dimensions are 200 mm and 100 mm.

All fragments are welded together according to the diagram. The round pipe is fixed at the bottom of the rectangular one and in the middle relative to the sides.

The rebar scraps are welded together grateIt is convenient to make it retractable so that you can load firewood and then push it into the firebox.

They are sawed off from the pipe 4 rings. They are attached from above so that the dishes do not block the draught hole.

In a disassemblable version the legs are installed. Nuts are welded to the bottom, into which long bolts are then screwed. There is another way. Rods or scraps of steel sheet are welded to the bottom. This is less convenient for transportation, but there is no need for assembly.

When the structure is ready, it needs to be painted. Only fire-resistant paint is used. This will protect against corrosion and also cover up traces of soldering.

Possible complications

When laying bricks, it is not easy to accurately calculate the size of the openings for the firebox and ash doors. Therefore you can lay out a row with a door without mortar, "dry", and figure out how best to arrange it. And then lay out the bricks, fastening them with mortar.

When making a stove from pipes, it is difficult to calculate the place of their connection. Therefore, first a round fragment is sawed off and placed next to the rectangular one in the right place. Around a line is drawn with a marker, along which the cut is made. If the fuel part is assembled from separate plates, it will be more convenient to cut a hole before welding them among themselves.

Useful video

Watch the video, which demonstrates the process of lighting a camping rocket stove and talks about the characteristics of the device.

Benefits of Using a Rocket Stove

Reactive furnaces quite economical to use. But for super-efficient operation it is important that the fuel is dry, otherwise secondary combustion of gases does not occur.

Rocket stove Not suitable for installation in a bathhouse. The thing is that for the desired effect to occur, the walls of the room must first be heated. And in the mode created by this furnace, it is the air that is heated.

As a heating device in a house for permanent residence, such a device is not always convenient.

When firing, it is necessary to regulate the draft by opening and closing the fuel door. It is quite difficult to constantly monitor the stove in the house. But it is well suited for use in a tent, garage, separate workshop or shedThe rocket stove does not break down if a long time passes between firings.