From induction hob

An induction boiler can also be made using an induction cooker. To do this, disassemble the heating element of the tile and use copper wire for winding on a core made in the above manner.

The tile control unit is used to power the resulting winding, setting the required power on the touch control panel.

However, this method has significant disadvantages:

• For successful work For such a homemade boiler, you need to calculate the inductance parameters of the newly assembled coil. They may not coincide with those for which the tile’s electronics are designed, as a result of which the control unit may fail. To make calculations, you need to have good knowledge in the field of electrical engineering and be able to understand the connection diagram;
• Most stove models are equipped with automatic shutdown 2-3 hours after the burner starts operating. This will lead to regular shutdown of the boiler;
• Induction-type stoves usually have a power of no more than 2.5 kW, so they are only suitable for conversion to a low-power boiler.

Device errors induction boiler from tiles are shown in the video:

An easier option for using an induction hob, eliminating device disassembly and installation new scheme- install on it sealed tank made of stainless steel of a suitable size with inlet and outlet fittings and connecting it as a boiler to the heating system. Almost everyone can handle this connection scheme.

In the presence of necessary knowledge and the ability to understand circuits, you can follow the example of the author of the video and assemble a functional induction boiler from tiles, modifying its circuit.

Dry type heater

The operating principle of an induction boiler involves the use of water or other liquid not only as a coolant, but also to cool the core. But heating of the secondary winding, the role of which in this device is played by a pipe with water, will also occur if it consists only of metal.
The degree of heating in this case depends on the ratio of the strength of the electromagnetic field created by the winding and the mass of the core metal. After making calculations, you can create a dry induction heater with your own hands from metal pipes and copper winding, as shown in the video.

Using an induction boiler is cheaper than a conventional electric boiler with heating elements, and homemade design will significantly reduce the cost of its installation. You can assemble a water heater in the same way. flow type for installation in a country house, selecting a device of the required power.

When planning a heating system in a country house, owners consider many technical solutions, including an option with an induction boiler. Its installation allows you to save electrical energy, it does not emit life-threatening substances, and therefore is environmentally friendly. It is possible to create an induction heating boiler with your own hands and see its advantages, for example, over units running on gas or solid fuel.

Internal structure and principle of operation of the boiler

The main purpose of the equipment is to create thermal energy from electrical energy using a special unit. Unlike heating elements, induction devices increase the temperature of the coolant faster due to a completely different design.

Induction boilers are effectively used in heating systems not only private houses

The coolant is traditionally water or antifreeze, but sometimes other liquids are used that have necessary property– current conductivity

The device is based on an inductor (transformer) with two types of windings. Eddy currents arise inside, following the coil (short-circuited), which is also the housing. As a result, the secondary winding is replenished with a supply of energy, which it immediately converts into heat, which is transferred to the coolant.

The device must be equipped with two pipes: through one of them cooled coolant will be supplied, and through the second, hot coolant will come out.

The system does not overheat due to the fact that hot water is constantly removed, and cold water comes in instead

The diagram of a factory-made boiler is similar to the diagram of home-made equipment

If we break down the operating principle of the boiler into stages, we get the following picture:

• Water (or other coolant) enters the boiler.
• Electricity is supplied to the internal winding.
• Under voltage, the core is heated, and then the surface.
• The coolant is heating up.

A self-made induction boiler, as a rule, has a simple design, so it rarely fails. Thanks to the vibration that accompanies the operation of the unit, the appearance of scale, which is also a common cause of breakdowns, is eliminated. The factory device works on the same principle:

Examples of homemade designs

Option #1 - Plastic pipes + welding inverter

Having some knowledge in the field of physics and owning wire cutters, you can assemble a basic induction model yourself.

To do this, you need to purchase a ready-made welding inverter, high-frequency, with continuously adjustable current and a power of 15 amperes, although for heating it is better to choose a more powerful device. Wire rod from of stainless steel or simply pieces of steel wire are suitable as a heated element. The length of the segments is about 50 mm, with a diameter of 7 mm.

Copper wire can be purchased at the store. It is better not to use winding from old coils

The housing (the base of the induction coil) will also be part of the pipeline, so a plastic pipe is suitable for its manufacture, always with thick walls, the internal diameter of which is slightly less than 50 mm. Two pipes are attached to the body for the flow of cold coolant and the return of heated coolant.

The internal space is completely filled with pieces of wire, closing both ends metal mesh so that they don't fall apart. The induction coil is made in the following way: an enameled copper wire is carefully wound around a ready-made plastic pipe - approximately 90 turns.

The homemade device must be connected to the network. A section of pipe is cut out from the installed pipeline, and a homemade induction boiler is installed in its place. It is connected to the inverter and the water is turned on.

The induction heating boiler is located together with the rest of the equipment - in the boiler room

It is important to note that induction heating boilers only work if there is coolant in the system; without it, the plastic casing will melt.

Option #2 - design with a transformer

To manufacture this unit, you will need a welding machine, as well as a transformer (three-phase) with the ability to be fixed.

It is necessary to weld two pipes so that they look like a donut in cross-section

This design performs both conductive and heating functions. Then the winding is wound directly onto the boiler body so that it works more efficiently, despite its low weight and size. The coolant heating circuit is standard: it receives thermal energy upon contact with the winding.

As well as the simpler option, complex model equipped with two pipes - for the entrance of the cold coolant and the exit of the heated one

The presence of a protective casing will help prevent loss of thermal energy. You can also make the casing yourself.

Features of installation and operation

The heating system is suitable for installing an induction system closed type, which includes a pump that creates forced circulation water in pipes. Common plastic pipelines are also suitable for installing a self-made boiler.

During installation, you should maintain safe distances to the nearest objects: to other devices and the wall - 300 mm or more, to the floor and ceiling - 800 mm or more. It is reasonable to place a safety group (pressure gauge, air release valve) near the outlet pipe.

Grounding is another prerequisite for installing an induction boiler.

Having made an induction boiler with your own hands, you can soon see the results of your labors: it will work properly for a long time, not inferior to the factory version. Difficult to manufacture, but economical to use, it does not require additional maintenance, the main thing is to comply with operating conditions.

Induction water heaters are good because they consume the least amount of electricity compared to other options for electric heating boilers. However, not everyone can afford such pleasure, especially for use on summer cottages which are rarely visited. This is due to the high price of the products, which can vary from 25 to 100 thousand rubles. In order to still please yourself with such an electric heater and at the same time save your own money, we recommend making an induction boiler with your own hands. Read on to learn how to assemble it at home!

Idea #1 – Simple Vortex Heater

First of all, familiarize yourself with how this heating option works and what are its advantages over alternative options boilers The video below will answer all your questions!

Description of the advantages and operating principle of induction water heaters

The materials you will need to make your homemade product are:

1. Plastic pipe with internal diameter no more than 50 mm.
2. Steel wire with a diameter of no more than 7 mm.
3. 2 adapters for connecting to the heating system (pipes).
4. Metal mesh with small cells.
5. Copper enameled wire.
6. High frequency inverter.
7. Insulating material.

Having prepared all the materials, you can proceed to assembling the induction boiler with your own hands. First of all, cut the steel wire into 5-centimeter pieces. After this, cover one side of the plastic pipe with a mesh and pour the cut wire inside. The amount of material should be such that the volume of the homemade product is completely “clogged” with wire. Next, the second end is covered with a metal mesh, which will prevent the wire from spreading throughout the heating system.

When the filling is prepared, you need to independently make the connection points for the homemade vortex boiler to the heating main. To do this, adapters are secured on both sides of the pipe by welding or threaded connections.

Next, you need to make the heating element of the device yourself - an induction coil. All you need to do is wind about 90-100 turns of copper wire over the pipe. Be sure to keep the pitch between turns so that your homemade induction boiler works evenly. Once completely wound, the ends of the copper wire are connected to the inverter and eventually the boiler body can be assembled and insulated with suitable thermal and electrical conductive material.

Starting a homemade heater must be done only after connecting it to the coolant - water. If you turn on the inverter without water in the housing, the pipe will instantly melt and all your efforts will be in vain.

That's all the instructions that allow you to make an induction boiler from improvised materials at home. Such a homemade product can be installed on any part of the heating system, but due to its not very attractive appearance We recommend hiding it out of sight.

You can clearly see the principle of operation of the device in this photo:

As you can see, the core inside is red-hot, which is due to the influence of the electromagnetic field. We recommend viewing the tests of the assembled device in a video example:

Effect of electromagnetic field

Idea No. 2 – A more powerful device

To make a powerful induction boiler with your own hands, you just need to know how to use welding. In fact, the assembly technology is not too complicated and any self-taught electrician can handle it, as you will see after reading.

So, the materials you will need are:

• two pieces metal pipe different diameters;
• enameled copper wire;
• two adapters for heating pipes (for supply and return);
• heat-insulating casing;
• three-phase inverter.

A drawing of a homemade heater looks like this:

As you can see, one pipe needs to be welded inside the other to create a hollow tank in the form of a cylinder. Also using welding machine you need to “cut” two pipes into the supply container cold water and hot output to the heating system.

Next, as shown in the diagram above, you need to wind the copper wire around the body of the induction boiler. The winding, as you understand, will serve as a heating element and, in contact with the coolant, will heat it. It is necessary to stretch a heat-insulating cover over the created structure, then open the water supply and test the system.

Induction heating boilers appeared on the market not so long ago, but have already become a serious competitor to classic equipment using heating elements. Devices of these types have the same dimensions and do not differ in power consumption. However, inverter equipment has a number of advantages, for example, they warm up the heating system faster. Using your existing knowledge, you can create an induction heating boiler with your own hands.

Principle of operation

The basis of all induction-type devices is the ability of materials that conduct electric current to heat up under the influence of eddy currents, which are created using electromagnetic induction. The induction source is a high-frequency alternating electric current passing through the first winding of the heating device.

The secondary short-circuited winding is represented by a heating element located inside the coil. Eddy currents can also appear at a standard power supply frequency of 50 Hz. However, in such a situation heating device will not be able to operate at maximum efficiency and will experience vibration and noise during operation. Thus, the frequency must be raised to at least 10 kHz.

Part 2. Do-it-yourself induction boiler - it's easy. Choosing an induction cooker. Finalization.

Unit design

The inverter heating boiler consists of a heat exchanger that acts as a core on which a toroidal winding is wound, connected to a frequency converter. When electric current flows through the winding, an alternating magnetic field appears, causing the appearance of eddy currents in the heat exchanger.

Necessary for work heating unit the frequency is set using signals from the control unit supplied to the frequency converter. All industrial boilers of this type are equipped modern systems automation, allowing to provide optimal temperature coolant, and also turn off the unit in case of emergency situations.

The coolant passes through the heat exchanger and is heated by eddy currents. Because temperature indicators The inlet and outlet fluids are different; continuous circulation of water in the heating circuit is possible even without the use of pumping equipment. Oil, antifreeze, antifreeze and water can be used as a carrier.

Particular attention should be paid to the fact that the quality of the liquid does not matter– the system is in a state of constant vibration, not felt by humans, and this prevents the formation of scale on the pipes. The outer shell of the boiler is metal structure, equipped with thermal and electrical insulation systems. Below is a do-it-yourself induction heating scheme that can be implemented quite easily.

Among the advantages of induction-type heating devices, it is worth noting the following:

However, the inverter unit also has several disadvantages. The most significant among them is cost. This is why many home craftsmen decide to make an induction boiler with their own hands. You can develop drawings of this device yourself, or you can use ready-made ones. At the same time, a home-made design will be practically not inferior to industrial models in terms of operating efficiency.

Part 4. Do-it-yourself induction boiler - it's easy. Testing in a water heating system.

There are several design options for units of this type. However, not all DIY induction heating boilers are easy to make. There are two designs worth paying attention to.

From inverter welding machine

When creating induction boilers with your own hands, the most difficult thing is to assemble the converter high frequency. To simplify the task, you can use a welding inverter that produces a signal with a frequency of at least 20 kHz. You will also need the following materials for this work::

• Copper conductor with an enamel insulating layer with a diameter of 1-1.5 mm.
• Insulated wire and terminals for connecting the coil to the inverter.
• Pieces of stainless steel wire about 5 cm long and 3-5 mm in diameter.
• Water supply polyethylene pipe 100 cm long and 50 mm in diameter.
• Fine mesh stainless steel mesh.
• Pipe adapters.
• Tee for connecting a safety valve.
• Two ball valves.
• Textolite strips and epoxy glue.

You can use plastic or metal as a housing distribution board. First, on a polypropylene pipe, departing 80-100 mm from its ends, it is necessary to strengthen 4 textolite strips 8-10 mm wide. Then 50 to 100 turns of wire coated with enamel are wound on them. protective layer. The distance between the turns should be 0.3-0.6 mm.

The exact number of turns is influenced by the diameter of the conductor, its resistivity index and the output parameters of the inverter used. If the unit will be installed in a residential area, it is better to make a toroidal winding to reduce the strength of the external electromagnetic field.

DIY induction boiler part 1

You need to insert a stainless steel mesh into one end of the pipe, and then tightly stuff it with pieces of stainless steel wire. After this, the second end of the pipe must also be covered with a mesh. Adapters are mounted on both sides polyethylene pipe, after which they are installed Ball Valves. Safety valve must be installed on the side of the top outlet adapter.

You will also have to coat the winding with epoxy. To make the composition, you need to take a little more hardener than recommended in the instructions - about 10-15%. After this, all that remains is to connect the winding to the inverter and install the heat exchanger in the housing. It is important to remember that induction heating units cannot be started without coolant. Before testing the system for functionality, it must be filled with water.

From induction cooker

There are two possible design options here. To implement the first solution, you will have to disassemble the stove and use the copper core of its heating element to make a coil. The tile control unit can be used to power the winding. However, this method has several significant disadvantages:

• It is necessary to recalculate the inductance of the homemade coil.
• Many stove models are equipped with an automatic shut-off system after a certain period of time from the moment of operation.
• Induction cookers most often have a power of no more than 2.5 kW, which makes them suitable only for the manufacture of a low-power heating unit.

Which heating boiler is better? An induction electric boiler of 2 kW versus a heating element of 2 kW.

A simpler and more efficient design does not require preliminary disassembly of the slab. It is enough to install a sealed tank made of stainless steel on this device. This container will act as a boiler for the heating system. To get started homemade unit All that remains is to connect the tank to the heating system.

If House master has good knowledge in the field of electronics, then after finalizing the stove circuit you can make a good induction boiler. However, most craftsmen choose simpler ways to solve the problem. Whatever design is used as a result, it will save on the purchase of factory equipment.

Any home should be warm, cozy and comfortable to live in. This can be achieved using many factors, including correct organized system heating. When choosing from a variety of home heating options, you should choose the one that will provide maximum efficiency, safety and savings. Here we're talking about about, the implementation of which does not require a global restructuring of the existing heating system.

If you decide to build an induction boiler with your own hands, you first need to understand all the intricacies of this process.

How does an induction type boiler work?

The body of such equipment consists of several layers:

• external;
• thermal and electrical insulating layer;
• 2-wall core.

In boilers intended for industrial use, a cylindrical winding is used, while in domestic and home-made boilers, a copper wire winding is used according to the toroidal principle. It is carried out between ferromagnetic pipes having different diameters. Required condition: The pipe wall thickness should be more than 1 cm. Inner pipe acts as a magnetic circuit and is called a core.

The circuit of any electrical inductor consists of a primary winding (helps convert electricity into eddy current and magnetic fields), as well as the secondary winding.

It includes the boiler body itself and the main heating element, designed to obtain heat for the liquid carrier circulating through the heating system.

In addition to the main components, this type of boiler includes circuit breakers and a heat sensor built into the housing.

The heating element is represented by an induction coil in which current (alternating or direct) is generated. The resulting vortex flows contribute to the heating of the steel core. After connecting the boiler to the network, the current accompanied high voltage, passes to the primary winding, resulting in an electromagnetic field. It is this that promotes the extrusion of currents into the steel core. Then all the heat goes directly to the heating devices.

The induction boiler design allows you to reduce the weight and size of the device, as well as obtain the highest possible efficiency. In this case, more than 95% of the heat goes into the coolant, which affects the performance of the device, as well as its efficiency. For example, heating the core to 75°C occurs in approximately 7 minutes.

Advantages of boilers

Induction boilers have a mass positive characteristics, which may ultimately influence the decision to purchase it or build a homemade structure:

1. Minimal likelihood of leakage due to the absence of detachable connections.
2. Protection against scale (explained by the influence of high-frequency vibrations from vortex flows).
3. Durability (due to the absence of elements that may be subject to wear).
4. Possibility of operating the boiler from the network with DC or low voltage.
5. Fastest heating possible.
6. Electrical and fire safety of the device (explained by the small temperature difference between the coolant and the core).
7. Possibility of saving energy due to low inertia.
8. Quietness (no need to install the boiler in a separate room of the house).

At the same time, the probability of failure is minimal, and the need preventative work almost zero.

Unique is the fact that the coolant circulating through the heating system should be changed only once every 10 years!

Disadvantages of a device with an induction principle of operation

There are no ideal devices, so before choosing the type of boiler you should consider some of its negative aspects:

• powerful induction boilers are capable of provoking the occurrence of UVK waves operating within a radius of several meters from the boiler (their effect on humans is almost absent, but some pets can pick up such waves, which affects their well-being);
• induction heating devices industrial production They are expensive, so not everyone can afford them.

Stages of creating an induction boiler with your own hands

According to experienced craftsmen, homemade production An induction heating device can be installed by anyone with at least a minimal understanding of heating circuits and systems. The event consists of the following stages:

Initially, for the base of the boiler you should purchase the necessary materials:

• welding inverter with the ability to regulate current;
• wire or rod rod about 7 mm thick, which must be crushed;
• a plastic pipe with walls at least 1 cm thick and about 5 cm in diameter.

The bottom should be covered with a metal mesh with cells minimum size and cover it with fine wire all the way to the top. Upper part the pipes are covered with a grid, and then the entire structure is fixed using a welding machine.

This is followed by the stage of preparing the primary winding circuit. Why is enameled copper wire wound, maintaining a distance between the turns, onto a plastic pipe.

Creating a protective casing, which involves attaching a steel or iron body with thermal and electrical insulation directly to the structure by welding. The winding wire, brought outside the casing, helps connect the coil to the electrical network.

Then to plastic pipe 2 pipes are connected (inlet and outlet), which help circulate the coolant throughout the device.

Installation features

Important! Induction devices are used exclusively in closed-type heating systems equipped with a pump.

Installation is carried out vertically.

Maximum safety when operating boilers of this type is ensured only by heating systems with plastic or polypropylene wiring.

It is advisable to maintain a distance between the boiler and nearby surfaces: from the wall - at least 30 cm, from the floor - more than 80 cm.

It is advisable to install a blast valve, which will help relieve air in the system in an emergency.

During the heating process, no harmful exhausts are released and there is no need to operate the chimney. Heating a residential building using an induction boiler is a modern, environmentally friendly and economical approach that has become widespread throughout the world.