Do-it-yourself chimney for a stove: we make chimneys for stoves using different options. How to make the right chimney for a stove, sauna, fireplace, boiler. Coaxial chimneys How the chimney works in the furnace

For an item such as a stove, a chimney is an indispensable thing. The choice of one or another chimney for a fireplace or bath depends primarily on the material from which it is made. In our online store we offer ceramic options and from of stainless steel.

Ceramic models are recognized as one of the most reliable. Them smoke channel made of parts round shape from ceramics, and the outer skin - from expanded clay or concrete blocks. They have proven themselves in working with firewood, gas, coal, as well as liquid fuel. The use of these products for fireplaces allows you to get a durable and reliable element of the thermal mechanism.

The main advantages of ceramic structures:

Long service life;
Possibility of application different kind fuel;
Corrosion resistance;
High fire resistance;
Sufficiently fast heating and heat retention for a long time;
Good fire safety;
Excellent traction.

Of the minuses can be noted:

The complexity of the installation;
Great weight;
Higher cost than other varieties.

Recently, stainless steel smoke exhaust systems have become very popular. Inner pipe here is made of heat-resistant steel.

The main advantages of stainless steel:

Light weight, so there is no need for a foundation;
Suitable for any heating equipment on any fuel;
Attractive appearance;
It can be represented by separate equipment or be part of a brick smoke exhaust system;
Corrosion resistance;
Easy installation;
Ability to withstand elevated flue gas temperatures.

Buy a chimney inexpensively

In the Stoves Tut store, we offer chimneys with installation in a fairly wide range. We offer chimneys from various materials, as well as working on different heating devices. All products in our catalog are different high quality manufacturing and reliability. We sell products from trusted manufacturers, so we can guarantee long term operation. All prices for chimneys in Moscow, indicated on our website, are profitable and affordable for everyone.

To make a purchase, it is enough to decide on the product, add it to the cart and proceed to payment. You can do it online by bank transfer using a card. Delivery is made by our employees in Moscow, the Moscow region, as well as in any corner of Russia. If necessary, we can perform the installation of the structure. If you have any difficulties with the selection of the perfect product, as well as additional questions, order a callback online directly on the site, and we will call you back at the specified number at the same minute. Our managers will listen to all your wishes and help you choose suitable option and provide full advice on each issue. The goal of our activity is to sell a quality product and provide a convenient service that will satisfy every customer.

A chimney is an essential element of any heating system that emits combustion products during operation. A draft is created in the pipe, on the one hand, ensuring the flow of oxygen into the furnace, which is necessary to maintain the combustion process, and on the other, contributing to the removal of smoke and gases to the outside. In furnaces long burning installation and operation of the chimney is carried out according to standard rules, although it has some peculiarities.

Of the variety of metal furnaces, installations with a long-term combustion function (convection furnaces) are in great demand and popularity. These ovens are easy to operate and very economical. They are equally good for little ones. country houses, multi-storey private houses, workshops, storage facilities etc.

The main features of these ovens include:

Increased volume of the furnace, containing a large number of firewood.
Separation of the furnace into two chambers that perform different functions. Gas is burned in one, firewood smolders in the other.
The presence of a special chipper inside the firebox that prevents the open flame from flooding into the chimney.

The combustion process itself is fundamentally different from the work of an ordinary metal furnace. Firewood is ignited in the upper part of the furnace, air is also supplied here. The feed volume is regulated by a damper. The fire spreads down, and the intensity of the flame cannot be called strong, the process is more like smoldering.

As the firewood smolders, pyrolysis gas is also released, which moves into a separate chamber of the firebox, mixes with air and also burns out, further increasing the efficiency of the installation.

During the operation of the long-burning stove, less heat is generated, allowing you to maintain the temperature in the room at the same level. Firewood is consumed much less, and the combustion products entering the chimney have a low concentration of harmful substances.

Buleryan oven: advantages and disadvantages

Bullerjan is one of the types of long-burning stoves that works on the principle of convection.

The design was developed by Canadian inventor Eric Darnell in 1975, after which the rights to the patent were bought by German businessmen who launched the serial production of stoves under this brand.

The stove combines the functionality of a standard wood-burning firebox, a heater and a gas generator. Buleryan is able to work in two modes:

Kindling. More air is supplied to the burning wood, which contributes to their rapid combustion and accelerated heating of the room.
Gasification. The supply of oxygen is reduced to a minimum. Firewood gradually smolders, and the room warms up more slowly. In this mode of operation, one bookmark of firewood will be enough for 10-12 hours of continuous operation.

Chimneys for stoves - main detail in any heated building. If the structure is not installed correctly, a fire or carbon monoxide poisoning can occur, so it is assembled in accordance with fire safety standards and requirements.

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Designed to remove harmful combustion products from the room, so no heating system can do without it. In addition, it supplies the furnace with oxygen. There are several types of chimneys, which are classified according to the location of the system design and material:

Brick. Structures made from ceramic brick, are highly resistant to mechanical influences and high heat capacity. A heated chimney stays warm for a long time, keeping the heat in the room.
Steel. The design of this material consists of several modules, it includes pipe sections, tees and glasses for collecting condensate. The single-circuit product is made of heat-resistant stainless steel and has a long service life.
Sandwich chimneys. The design consists of two pipes: a larger and a smaller diameter. A product of small diameter is installed in a large one, and a heater is laid between them. Such sandwich systems have low thermal conductivity, which allows them to be installed outside the house.
Corrugated. This is a flexible type of chimney that is used in brick structures to line curved ducts. It is made on the basis steel tape, easy to install and has an unlimited service life.
Polymer. It is a flexible chimney made of polymer material. It is used for brick and concrete structures where flue gases are not too hot.

Chimney Requirements

The chimney must meet all requirements and be fully suitable for technical specifications heater. When designing them, you should follow the basic installation rules, then the system will work efficiently and smoothly:

The design of the pipe is designed in such a way that dust and combustion waste often accumulate in its corners. Therefore, during installation, it is worth choosing round-shaped models, this will allow less frequent cleaning. Rectangular and square models require more frequent maintenance.
The diameter of the pipe section must be greater than the diameter of the nozzle heating device. For a quality level of thrust per 1 kW of power, a product with a cross section of 8 cm² is required. What exact size of the chimney is required for the heating device can be found in the instructions attached to it.
If the heater works without a chimney, then the device and the pipe are placed on different height. The width between the connecting points must be 1 m or more. In this case, the size of the pipe section must correspond to the total power of the heat generator.
The traction force will decrease several times if the total length exceeds 1 m.
On the flat roof the erection of the pipe is done 0.5 m above the surface level, on the standard - 0.5-1.5 m above the level of the ridge.

Chimney device

The design of any chimney consists of a vertical pipe. The arrangement of chimneys in a furnace with a standard brick box according to design features completely different from the factory modular products. The design of the chimney depending on the material:

Standard brick consist of: neck, slope, riser, valve, otter, headband and steel cap.
Metal and asbestos-cement ones consist of: a pipe, a cap, a heater and an adapter with which it is connected to the furnace.

Also, the furnace system has complex nodes. These are places where the chimney passes through the roof, attic and interfloor ceilings. When arranging it, the main thing is to properly arrange these areas.

Which chimney is better: brick or metal

The design of the chimney is chosen depending on the parameters of the heater, the level of readiness of the house and the heated area. The most suitable design— one that can operate efficiently, safely and economically. The difference between metal chimneys for stoves and brick:

Bricks - heavy material, therefore, a foundation is laid under the structure. It is difficult to make a brick structure on your own, and the help of highly qualified masons is required. Installation of wall structures is done on initial stage building a house.
Steel structures are cheaper than bricks and have increased thermal conductivity compared to brick structures. Therefore, metal chimneys need additional insulation. Steel has good resistance to corrosion and condensation. Installing this type of chimney is easy, and you can do all the work yourself.

Installation rules

When building a chimney for a stove with your own hands, you must follow all building codes and requirements. Failure to comply with the rules threatens with serious consequences: costly redesign or fire. Installation rules:

The chimney channels are located in outer walls structures that are made of non-combustible material. If there are no walls, then chimney nozzles are used. A separate pipe or channel is made for each furnace. If there are 2 furnaces on the same floor at once, then they are connected to one pipe. To properly connect 2 channels, you need to make cuts: 0.12 m thick, more than 1 m high from the bottom of the pipe connection.
The pipe project is done vertically without ledges. A slight deviation of 30 ° is allowed, a slope of up to 1 m. All inclined places must be smooth.
If the roof of the house is made of combustible material, then the chimney is equipped with a spark arrester made of metal mesh.
A structure made of combustible material and adjacent to the furnace walls, ventilation duct and chimney protected by non-combustible materials. If voids have formed between the walls and partitions, they are filled with refractory material.
There must be a distance of 130 mm or more between concrete and brick chimneys and combustible elements of the roof. From a ceramic structure that has no insulation - 250 mm.

Tools and materials

In addition to the standard set of accessories, the following tools and materials will be required for installation:

fasteners;
wall brackets;
asbestos sheets;
couplings;
clamps;
sealant;
marker.

Installation steps

Before installing the stove, chimney and other elements, they prepare a diagram and determine how many pipe segments will be needed. The assembly of the structure takes place in stages:

To protect from heat sections of the wall behind the chimney and the floor behind the stove, asbestos sheets are laid.
The first pipe fragment is connected to the furnace branch pipe. Installing an adapter or seal will help eliminate the gaps that form at the joints. Joints are sealed with a metal clamp and fire-resistant sealant.
To make the passage of smoke free, each piece of pipe is put on the bottom. If sandwich pipes are being installed, then parts of the inner circuit are inserted into the module located below, and the outer circuit is inserted vice versa.
The overlap between the pipes should be a quarter of the radius. Connecting joints should not be allowed to be located between floor and roof slabs. Otherwise, it will be difficult to pull them together with clamps and seal them.
If you connect the modules with a swivel elbow, then the pipe can be turned to the desired position. The swivel elbow is set at an angle of 45-90°.
The installed pipe is closed with a sealant that will protect it from water.

Then the structure is erected to the required height, a protective umbrella is mounted on top. The pipe outlet section is decorated with a decorative apron to match the roof.

Although manufacturers today offer private housing owners a wide variety of heating boilers, however, many of them prefer to install stoves or fireplaces in the house, because thanks to them, space heating requires minimum costs. Any heating equipment needs reliable removal of combustion products. That is why during its construction it is necessary to pay special attention to both aesthetic characteristics and operational characteristics.

The required level of traction that provides the most comfortable and safe conditions to stay in a particular room creates a chimney for the stove. It is an air channel through which the products of combustion come out. It can be an ordinary brick pipe or modular metal types, it is only important that it functions properly.

Basic structures

Outlet channels through which the utilization of air saturated with combustion products passes are necessary not only for stoves, but also for fireplaces or heating boilers or gas water heaters.

We list the main types of chimneys for furnaces.

Direct current. This is one of the first systems through which combustion products were removed. They have a significant drawback - due to the non-stop removal of gases to the outside, the main part of the generated heat is also carried away.
Direct-current structures equipped with transverse jumpers. These small additions allow some of the heat to be retained. When heated, the jumpers transfer heat to the walls of the heating unit. The same design is typical for a stove without a chimney in baths: the stones in them are heated by hot combustion products.

With labyrinth. There are many varieties of such structures, but they all have one thing in common. common features. In particular, this applies to the rate of removal of gases. It is quite low, since the exhaust gases are passed through a tortuous channel. In the process, the device itself warms up in parallel and ensures maximum heat transfer.

Became a classic, Russian stove. The scheme of the chimney is bell-shaped. The incandescent gas rises up, cools down a little on the sloping arch of the hearth and descends to the channel. The disadvantage of such a system is that it warms up unevenly. For example, in the lower part of the hearth, it does not warm up at all, since the heat mainly goes to the roof.
Modular. Unlike the classic brick version smoke removal, they are made of metal. They are used in gas heating systems. The fact is that the products of methane combustion are acidic compounds that destroy bricks with their aggressive effect.

Device Features

The efficiency of brick, metal, flexible chimneys for stoves and others depends on several factors, for example, material and dimensions, section, height.

It is preferable that the chimney pipes, say, for a bath, represent a regular circle in cross section, that is, they have cylindrical shape. Outgoing smoke with this configuration, in contrast to the angular one, does not encounter obstacles in its path and is discharged with the least resistance. In addition, a minimum of soot accumulates on the walls of the outlet pipe.
The outlet of the heating device must match in cross section with the chimney channel. If the width of the latter in the connection area turns out to be greater, which occurs quite often, then a special reducing adapter is installed, which must be carefully sealed at the junction. The extensions of the pipes during docking should be directed upwards in order to prevent condensate and resins from flowing along their outer wall.

The horizontal part of the channel design requires special attention. Warm smoke, as you know, moves vertically upwards, therefore, in these areas, moisture is especially actively condensed and deposited. thick layer soot. To compensate for such undesirable consequences and improve traction, it is necessary, firstly, to strictly limit the length of these segments: they must be less than 1 m in length, and, secondly, to provide condensate collectors and inspection doors there.

The correct chimney for sauna stoves is exclusively vertical. However, it is permissible to lay the pipe at a slight slope, provided that the length slope no more than 2 m.

Main stages of calculation

The calculation of the chimney is carried out taking into account such parameters as the power of the connected heating device, shape and others. Optimal Height and the cross-sectional diameter is calculated based on the SNiP of the furnace and chimneys.

Height above roof

To determine the height of the outlet channel of boilers industrial production use a special formula that describes its relationship with the static draft, the average temperature (K) in the pipe and the average value of the outside air temperature in summer period. If necessary, the value obtained from the calculation results is adjusted upwards, taking into account the following rule:

When calculating the height, the height of neighboring buildings is also taken into account: in the case of higher ones, the channel is taken out above their roofs.

Pipe area

In practice, they usually do without special calculations, based, depending on the power of the unit, on the following cross-sectional values:

less than 3500 W - 14 × 14 cm;
3500–5200 W - 14 × 20 cm;
5200–7200 W - 14×27 cm.

The cross-sectional area of the cylindrical channel is assumed to be the same.

If the cross section is significantly larger than the calculated value, then the thrust will deteriorate, and as a result, the system will work unstably. A smaller cross section leads to poor removal of combustion products up to the complete cessation of this process.

Material

The choice of material for the construction of the flue system is based on the type of fuel used for heating. For example, for gas equipment MDS ceramic pipes are best suited, while brick pipes can quickly collapse.

The classic version of the device of the discharge system is considered brick chimney for a metal furnace. brick construction assembled exactly according to the project, where the laying of each layer of the channel is prescribed separately. In this case, it is necessary to obtain a minimally rough surface from the inside and ensure complete tightness.

Today, stainless steel is most often used. In construction steel pipes can be: isolated and non-isolated:

uninsulated are used exclusively for internal installation furnaces and chimneys: they are installed in a special shaft;
when installing a pipe outside it in without fail insulated to prevent moisture condensation inside the pipe.

Security

For safety reasons, the chimney must be properly insulated, especially if the duct passes through ceilings in the immediate vicinity of combustible materials. are based on the type of floor material and on the temperature of the pipe. It is great if the walls and ceiling near the place where the structure passes are finished with fireproof material. If this is not the case, then the heated parts are isolated from hazardous materials using metal sheets and a layer of non-combustible materials.

The part of the pipe that goes out must be securely fixed and protected from the wind. From above they are covered with deflectors to protect them from precipitation. gas boilers in this matter are an exception: the protective cap on the chimney pipe in this case is a violation.

Some information from SNiP used when installing the chimney of the stove and fireplace

Smoke exhaust ducts can also be located on external walls in the case when they are made of non-combustible material, and the heating device is located near the internal ones. At the same time, external thermal insulation is required, which will not allow condensation of moisture inside the pipe.
Brick channels complement the pockets needed for cleaning. They are closed with a brick (laid on the edge) or a door is installed.
For roofs made of combustible materials, it is necessary to provide a mesh spark arrester, which is installed along the upper part of the channel. If the latter is made of brick, then between it and combustible materials it is necessary to provide a gap of 13 cm, in the case of non-insulated ceramic - 25 cm, and for insulated - 13 cm.

Installation of stoves and fireplaces gas fuel has its own characteristics. The connection is made using flexible metal pipes included in the equipment kit. A prerequisite is the presence of a vertical section in the system, and the distance between the axis of the horizontal and the line of the lower level of the nozzle must be at least 50 cm. This distance can be reduced, for example, if the ceiling height is less than 270 cm
twice if the heating unit is equipped with a draft stabilizer;
up to 15 cm if there is no stabilizer.

In a new building maximum length of all horizontal sections is more than 3 m, in the old building - up to 6 m. The pipe is installed with a slight slope in the direction heating unit. If two units work in the house, then they can be connected to a common outlet channel. They should be separated from each other at a distance of less than 75 cm.
The outlet channel can have a maximum of three turns, the radius of curvature of which must exactly match the diameter of the pipe section.

To do correct device chimney, you must have detailed diagram of this building. Improper laying can provoke the accumulation of harmful toxic substances indoors. Such work should be carried out by a highly qualified specialist who knows everything about such a structure.

The correct level of flue draft ensures that carbon monoxide is quickly removed from the living space. Such a structure is a kind of pencil case that removes caustic combustion products.

Several models of chimneys are presented in specialized departments. They differ in their structure and the material from which they are made. Our guide provides detailed instructions how to make a chimney for a stove with your own hands. Recommendations from experienced professionals greatly facilitate the task.

Types of chimneys

Drain shafts through which harmful gases saturated with combustion products are removed are required not only for standard stoves, but also for fireplaces and gas boilers. To date, several types of chimneys are known. These include:

Direct streaming. This variety is considered a popular building, which is most often used for arranging living space. The only drawback of such a chimney is the rapid heat loss. In addition to toxic substances, most of the thermal energy escapes here.

Straight flow pipes with lintels. They retain most of the heat in the combustion process of materials. This design is quite often used in baths. Such a long-burning chimney for a stove requires constant cleaning. Ash quickly settles on the surface of the jumpers, thereby preventing the rapid removal of toxic substances.

Straight flow chimney with labyrinth. This variety has a high heat dissipation. carbon monoxide pass through numerous passages. They quickly heat the walls of the chimney, thereby contributing to the maximum heating of the room.

Kolpakovy. It is used for the Russian stove. Hot smoke quickly rises up, where it gradually begins to cool. After that, it descends along the arch of the chimney masonry. The only drawback of such a structure is its uneven heating.

Modular. They are made from metal alloy. They are intended for heating systems working on gas. Metal chimneys for furnaces are able to cope with the acidic compounds of methane combustion products. Brickwork in this case, quickly collapse.

Chimney device

The effective operation of the chimney shaft directly depends on several criteria. For example, sections, heights and the material from which it is made.

What should be considered in the process of a device of this design:

The size of the outlet of the heating device should be slightly smaller than the cross section of the chimney channel. If the diameter is slightly larger, then you will need an additional adapter that will regulate the process of smoke removal.

Particular attention must be paid to the horizontal part of the structure. Warm air moves up quickly. Soot and combustion products quickly begin to settle here.

Thrust control will help shorten this process by reducing the length of these segments. They must be less than one meter. In addition, it is necessary to provide a condensate collector and doors for cleaning the chimney.

For sauna stove, it is best to use vertical chimney. In some cases, it is possible to lay metal pipe. During the fixing process, it is recommended to observe correct angle tilt. It should be no more than 2 meters.

Stages of creating a vertical chimney

To create a chimney shaft, you need to prepare the following tools and materials. For this you will need:

brick of the first grade;
building composition;
level;
rope for guide;
stairs;
construction diagram.

Creating a chimney includes the following steps:

The first layer is laid out of five bricks. The laying should be neat and even. The subsequent rows are made in the same way.

When the required height is obtained, you can proceed to the construction of the edge. Each subsequent row lays down 35 ml more. The result is a stepped structure in the area of \u200b\u200bthe ceiling.