How to make a do-it-yourself rocket oven - drawings and design features

Most summer houses are not connected to central heating, and as a rule, autonomous ones are not installed there. In the cold season, people live there so rarely that large investments are simply not justified. An excellent option in all respects is a rocket stove for a summer cottage or garden. The structure is distinguished by its original design, while requiring minimal financial investment and craftsmanship.

The principle of operation and features of the jet furnace

The rocket furnace from the pipe operates on the principle of direct combustion of fuel, followed by the afterburning of pyrolysis gases released when the wood is strongly heated. In this case, the free movement of hot smoke through the channels is activated without the use of natural or forced draft due to the temperature difference in the combustion chambers.

Installing a rocket-type hearth in a house gives the following advantages:

• high productivity and efficiency (efficiency up to 0.9);
• the possibility of refueling during operation;
• no need for a chimney;
• do-it-yourself installation availability;
• versatility of indoor and outdoor use.

The turbo boiler also has disadvantages:

• high quality fuel;
• fire hazard;
• low heat dissipation of the case.

The popularity of the device is steadily increasing, despite certain nuances in its functionality.

Variety of rocket stoves

Jet furnaces are subdivided into many modifications. The rocket stove can be of different sizes from the compact, suitcase type, to the huge one that captures the entire wall of the room.

There are these types of boilers:

• Stationary. Installed in residential and utility rooms - garages, workshops, animal sheds.
• Portable (tourist). They can be used outdoors or as a mobile heater for a cottage, when leaving the product is dangerous in terms of theft.
• Heating and cooking. Used for heating and cooking food.
• Fireplaces. Combine entertainment and heating function.
• Bathrooms. Designed to create heat in the steam room.

Distinguish between simplified and extended models that have beds for one or more people in the cold season.

Portable rocket furnaces

Camping options are compact in size, safety and quite decent performance. When folded, they easily fit in a backpack, suitcase, small cardboard box. They are used at a break during travel, at picnics and as a backup hearth in case of interruptions in gas and electricity. A rocket oven is made from a square shaped tube, the divider installed on the cut is used as a stand for kitchen utensils.

Gas cylinder design

The most popular product among home craftsmen. The balloon has an ideal shape for the project, made of high-quality metal of the required thickness. For the loading compartment, steel with a thickness of at least 5 mm is used, and a door is installed to adjust the intensity of the flame.If the boiler is planned to be used for cooking, the upper part of the container is cut off and an even sheet is welded there.

Combined oven device

Combined structures are stationary, assembled from bricks and iron, clay is used. The product has a high heat capacity with low fuel consumption. It is used as a heater with the possibility of connecting a water circuit. The device takes up a lot of space, which imposes certain restrictions on its installation.

Design with a bench

The facility consists of a firebox, primary and secondary combustion chambers, ash pan, blower and long horizontal pipes. A lounger up to 300 cm long is fitted over the canal. The bed can be equipped as a sofa or bed. To supply heat to the surface, iron radiators or perforations are made to release warm air.

Making a rocket stove with a stove bench

Since the work is dirty, you should remove as many items and furniture from the room as possible, prepare a protective film and container for garbage.

You need to make a detailed and competent scheme. Based on the calculations made, an estimate is made and everything you need is purchased.

Materials and tools

To make a jet boiler, you will need materials:

• brick;
• clay;
• sand;
• expanded clay;
• trumpet;
• gas cylinder or metal barrel;
• grates;
• damper;
• door;
• straw.

You need to take with a margin of 10-15%, adjusted for marriage, damage and errors.

Instruments:

• mallet;
• Master OK;
• putty knife;
• a hammer;
• Bulgarian;
• drill;
• shovel;
• container for solution;
• level.

In order not to harm your health, you must use protective goggles, gloves and a respirator.

Furnace manufacturing

For a stove-type boiler, the firebox is equipped at floor level. A deepening of up to 10 cm is preliminarily made, which is covered with refractory bricks or fireclay stone. Then, in accordance with the project, the combustion chamber is laid out. The laying is done on a mixture of clay, cement and sand. The structure must stand for at least two days until it solidifies and shrinks completely.

Primary chimney

This part is made from a thick water pipe or laid out from stones. The first option is preferable, as it provides complete tightness. A circular cross section is better for free air flow, less carbon deposits form in the pipes and there are no eddies. The primary channel is inserted into the container and welded to the bottom of the hole.

Chimney installation

The stove will work efficiently and safely if there is sufficient draft in it. Even if the boiler works on the principle of pyrolysis, it still emits a certain amount of carbon dioxide. For its effective removal, a chimney with a height of at least 400 cm is being made. This height provides excellent draft even in the absence of wind. To compensate for the excessive intake of air into the furnace and the rapid burnout of the fuel, a damper is installed. A cap is attached to the top of the chimney to prevent debris and precipitation from entering the chimney.

Furnace lining

When building a stationary rocket furnace, special attention should be paid to the quality of the lining of the vertical section of the flame tube (riser). For these purposes, light fireclay bricks, washed and sifted river sand are used. To protect the lining from smoke, a metal lining is applied to it - tin or old buckets.

Primary chimney lining

It is advisable to wrap the primary chimney with an asbestos cord and coat it with clay mixed with sand on top. After erection, the body of the lounger is covered with heat-insulating material - adobe, expanded clay or analogs.

The effectiveness of the rocket hearth is achieved by the correct placement of the combustion chambers, internal and external tanks. The distance between the cameras should be the same, but not less than 10 cm.The external tank should be coated with thermal insulation as much as possible in order to achieve the best reactive effect.