The furnace is self-contained: drawings, instructions, types, scheme and order

The bell furnace is a fairly common variant of the construction of heating equipment, which almost reaches the channel product. This development can be called modern, it differs from the older analogues by a new way of using hot gas.

Principle of operation

This design is not only equipment that heats the room, but also contributes to the effective containment of heat in it. The device is created in such a way that you can relax on it in cold weather, prepare food if necessary. The principle of functioning is associated with the creator Kuznetsov, which is why this furnace is also called the furnace of Kuznetsov. The essence of the work is quite simple, it consists in the fact that the hot gas circulates under the influence of the gravity of the gases, rather than the exhaust pipe. In other words, gases that have less weight are collected under the roof of the hood, while the cold ones remain below, since they have a more impressive weight. Interacting, these gases form a zone of turbulence, due to this the walls are more efficiently saturated with thermal energy. Gas is the main heat carrier in this case.

Key Features

The bell hood has certain distinctive features, which are expressed in a high level of efficiency, ease of operation, polyfunctionality, and also a very pleasant appearance. You can count on durability, as well as high performance indicators. A number of furnace owners, like many experienced professionals, believe that the described designs are one of the efficient and quality heaters that have ever been created.

Preparation of tools and materials

If you are building a bell-shaped oven, you will need to prepare a shovel, a bayonet shovel, a cement-sand mortar, which is prepared in a ratio of 1 to 3, timber formwork, and polyethylene film. In order to implement reinforcement, you should stock up a medium-sized rod.

Foundation construction

In order to build a base for the furnace, it is necessary to prepare the foundation pit first, the dimensions of which should be 150 x 100 centimeters. The dimensions can be changed, but the proportions should be kept. At the bottom is covered with a sand cushion, the thickness of which should be 15 centimeters. Such preparation should be left for 2 days, so that the sand has settled. This will create a design with higher strength characteristics. When creating a formwork it is advisable to use plywood, but if it is not, then an iron door or boards may come up. Influence on the quality of construction is not.

Advice of a specialist

If you are going to erect a stove hood, that it is important to pay attention to one important point, which is that the foundation must be completed in two bricks from the surface of the flooring. Pour the substrate in such a way that the surface is smooth in type. Forming the design, you need to use a medium-sized rod, but you can use a smaller rod, because the oven will weigh a little.

Filling procedure

When Kuznetsov's hood stoves are built, the foundation is poured slowly, periodically the solution needs to be stirred with a shovel, which will get rid of air bubbles. This will increase the strength characteristics of the structure. After completion of the priming, the base is left to harden, often it takes about 7 days. In some cases, it takes two weeks. Experts do not advise to hurry, because the longer the foundation will stand, the stronger it will turn out.

Poryadovka

A bell-shaped furnace, the order of which is presented in the article, must be laid out in the light of a certain technology. At first the foil is laid, only after that it is possible to begin laying brick. This will reduce heat loss, since hot air will be redirected back. The dimensions of such a lining should be slightly larger than the dimensions of the foundation, so that you could trim the edges. Bricks should be polished, they need to be laid, following the scheme. Products are placed evenly around the perimeter, and the side walls are laid out with a spoon, while moving from right to left. This will allow the master to see three bricks, one behind and two on the right. When you are laying out the second row, you need to install cleaning doors and an ash-pit. The internal part of the structure will have a view through which it will be possible to install at any place, but it is important to take into account the condition that is expressed in the fact that the cleaning doors must be located directly under the furnace. The third row is laid out in the same way, when laying the next row, it is necessary to reduce the hole so that the remains of burnt fuel fall off. In the far corner is a partition, which is designed to connect the lower and upper levels by the type of pipe. The next series is done using the same technology, however, a flame-resistant brick should be used for the rim. A grate is formed from above. The sixth row will simultaneously be the first row of the furnace. From it, you must bring the chimney to another compartment. When the bell-shaped heating furnaces are built, the seventh row is laid out almost in the same manner. The eighth row: you need to lay the furnace with a simple brick, from inside it has to be overlaid with halves of fire-resistant products.

Methodology for the performance of masonry work

For the inside of the combustion chamber, in the tenth redoubt, whole bricks should be used, and on the eleventh, a grid of fire-resistant products should be installed. When forming the next two rows, the grid must be removed, but two chimneys will appear. On the fourteenth row, the chimney must be closed in the air compartment. To do this, it is recommended to use a metal plate, and the bottom compilation for smoke should be formed with a brick. Only one channel will go up, which is left on the fourth row.

Formation of the second level

If you build a heating hood with your own hands, then on the fifteenth row will need to add a plate-fence. This element is strengthened on three sides with cement mortar. A brick is placed in the center of the smoke box, which will act as a column for the cover. Behind the plate must be formed a sinus, which is necessary to move the gas into the chimney. In the interval from 17 to 22 rows, access to the pipe should be blocked. The metal plate must be on the front wall of the oven, it will support the brick. It is better for her to use forged rims. The next series is laid out in a similar way. When the bell hobs are made, another step should be formed in the 23rd row. The pipe and chimney are connected together in a closed way. After 24 rows, which repeats the previous one, you can lay a pipe, its diameter should be equal to one brick. A plate-collection is placed on it. The entire structure after the completion of the work is covered with a roof, and then the brick pipe will go on. On this we can assume that the oven is ready.

The Nuances of Masonry Work

When laying the hood stoves with your own hands, you should take into account that there are some tricks of the masonry. If you follow the order, you will be able to get an even heating of the levels of construction and excellent traction. Instead of the roofing material, it is necessary to use foil, which will improve heat savings due to reflective characteristics. If you want to increase heat output, then you should make the levels in a larger amount. When the masters lay out cooking hoods, observing all the rules and technology, they manage to get a design that is as warm as possible.

Before the beginning of the masonry, it is recommended to polish each product independently, this will increase not only the aesthetic properties, but its functionality of the brick. The bell-furnace is called so for the reason that the gas appears to be under the hood. It cools down in the same place, and then it is forced out by hot smoke downwards. In this part of the construction, the smoke leaves the product leaving the special pipe. If you competently perform the order, the period of the smoke circulation will be minimized. The main feature of such a furnace is that it can be stacked, as you please. The main thing is to properly observe the order, everything else will depend on the specific circumstances.

Do not assume that with a reduction in the oven, you can achieve efficiency and compactness at the same time. This can affect the efficiency, which will drop sharply due to the law of the square-cube. Similar designs are not made of metal, despite the fact that this could solve the problem of cleaning. It's about cast iron, which weighs a lot, but still has a fragility.