In the process of planning a device of the heating system in the country or in a country house, many are trying to solve the problem of excessive energy expenditures by installing an induction boiler heating. In addition to saving electricity, its device is such that allows you to do without harmful emissions into the environment and does not represent any danger in the process of use. An important argument in his favor is the possibility of its independent design. In this article, we will look at what induction boiler heating: everything is about the principle of operation + 2 options of the device with your own hands. In addition, we will be apparent by its advantages over ordinary electric boilers and gas units.

Device induction boilers

The inductor (transformer) is based on the internal device of such a boiler. Ordinary household induction boilers differ slightly from similar industrial with a cylindrical winding system. In compact household boilers, a copper winding of a toroidal type is used.

The external body of the unit is made of painted metal, then a thick layer of heat and electrical insulation is underway, inside which is a dual wall core. It is made of extreme ferromagnetic steel and has a wall thickness of at least 10 mm. A toroidal winding that is wound on the core is the primary winding. It is in it that the electric field energy is transformed into a magnetic, which creates vortex currents. Already their energy is transferred to the secondary winding. The role of the secondary winding is the case of the contour, which, under the action of this energy, highlights a large amount of heat transmitted by the coolant. Toroidal winding allows you to create units with low weight and dimensions.

Principle of induction boilers

A boiler itself is usually included in the standard package, a completely necessary semiconductor converter, called an inverter, circuit breakers, an electronic thermostat. The temperature sensor itself is inside the boiler housing.

The work of induction boilers is based on the principle of electromagnetic induction. Its essence is that electricity consumed from the network creates an electromagnetic field. The coolant is supplied inside the boiler boiler through the aqueous pipe, which is welded below. A variable current with a frequency of 20 kHz arrives at the boiler through the inverter. When this instrument is turned on, the current flows through the toroidal winding of the boiler. In this case, the steel core is heated in just 7 minutes to a temperature of 750 degrees.

The heat generated is transmitted to the coolant circulating inside the contour. Fast heating of the fluid creates convection streams. This means that the preheated coolant is greatly expanding and rushes up the design of the boiler and then in the heating system itself. Often this happens enough to take place the full work of a household boiler having a middle length of the heating circuit. This method allows you to quickly heat the entire system, but for better circulation you need to additionally install a conventional circulation pump.

Thanks to the use of the principle of magnetic induction, heating the heat carrier in such boilers is much faster than in aggregates with Tanni, and heat loss is minimal. Almost does not occur on the core, no matter how tough and limestrine was not water.

This is because the vortex flows force the core to vibrate, not allowing the scale to form. At the same time, bubbles boiling from his body, purify the surface of the core. Due to the tightness of the entire system, the coolant takes the maximum (98%) the number of thermal energy released. Thus, these parameters greatly increase the CPD of the boiler, which is positively affected by its economy and operations.

Pros and disadvantages of induction boilers

Induction boilers have a number of unconditional advantages over ordinary boilers on theta:

• Stable efficiency indicators of up to 99% almost all time.
• The absence of heating elements, which significantly extends the use of the device.
• The absence of moving elements, which completely eliminates the mechanical wear and the need to replace components.
• The lack of detachable internal connections does not allow the occurrence of leaks.
• Complete availability of work even at a constant current or low voltage on the network.
• Very quick heating to the desired coolant temperature (5 - 7 min).
• A sufficiently high degree of electro- and fire safety corresponding to Class II due to the use of a core that is not directly related to the inductor.
• The lack of the need to install the chimney and providing a separate room under the boiler. To install this system there is no need to attract highly qualified specialists.
• Regulatory life of the device up to 25 years and even more. It directly depends on the tightness of the sealed outer seam and from the large thickness of metal pipes for the core. He does not need any preventive work during the entire period of operation.
• The boiler can use all available liquid coolants: oil, water, antifreeze, ethylene glycol without any preliminary preparation.
• You can change the process of working on a coolant once every 10 years.
• Good protection against overheating and various accidents, pecklessness during work.
• Electronic automated control systems are installed on the boilers.
• Inside the contour there is no scale.
• The ability to connect the boiler to any heating systems of the closed type.
• The minimum improverage of the coolant is 35 ° C.

But induction boilers have shortcomings, both in front of other heating devices and according to individual specific parameters.

• Such boilers can only be connected to the closed heating contour, very often with forced coolant circulation
• A fairly large weight of the boiler with quite small sizes. The weight of a 2.5 kW boiler is at least 23 kg at a complete height of 45 cm and diameter 12 cm.
• Large than other boilers price, which is due to the presence of an expensive part - inverter.
• The distance generated to a distance of several meters from the boiler of the radio intercourse in the long-wave, medium-wave and even VHF range. They do not affect the human body, but their pets and electronic equipment feel good.

Installing an induction boiler and control system to it

The installation of such boilers is possible only in the closed heating system. This requires an expansion tank-explicit and pump for forced circulation of the coolant.

According to the instructions, the induction boiler is set strictly vertically. After that, the feed pipe of the heating circuit is connected to the lower input nozzle. The output nozzle is located at the top of the device (side or from above). The feed pipe is flimbated on it.

The weight of the mounted boiler is quite serious, so the attachments need to pay the most particular attention. They must be very reliable, given that when the boiler runs, its weight will increase significantly due to the inside of the coolant. The side distance from the boiler to the surrounding items and walls is 300 mm. The distance to the floor and the ceiling - 800 mm and no less. An important and prerequisite for the installation of such boilers is their grounding. It is possible to use it with both metal and metal-plastic pipes.

Next to the output nozzle, a security instrument group is embedded: a subversive valve, a pressure gauge, an air vent. The expansion tank is installed on a convenient section of the reverse tube of the system. Shut-off valves are mainly mounted after a security group.

Installation of the entire management system, as well as the boiler itself, it is necessary to produce in accordance with the existing rules and standards of PUE, the schemes and conditions contained in the technical passport existing.

Examples of homemade structures

If you are not going to use an induction boiler for the implementation of the main heating in a private house, and you want to equip them a cottage or a garage, then you can try to construct it yourself. There are two options how to do it.

First option

For its implementation, pieces of plastic pipes and a welding inverter will be needed. Having elementary knowledge in the field of physics and knowing how to use nippers, you can independently make an elementary induction model. To do this, you need to purchase an already created high-frequency welding inverter with a smooth adjustment of the current power up to 15 amps or even higher. For heating a large area, it is better to choose a much more powerful apparatus. You will also need a stainless steel rod or conventional steel wire segments. This is necessary to perform the role of the heated element. Their length is about 50 mm, with a diameter of 7 mm.

An important component is the copper wire, which can be easily purchased at any thematic store. Do not use winding with old coils. The body, which is the basis of the induction coil is at the same time part of the pipeline, so it can be made of plastic pipe with thick walls. Its inner diameter should be 50 mm. Two weekends are fixed to this body for the intake of cold and recoil hot heat carrier. All the inner space of the case must be fully filled with wire segments and close the metal grid so that they do not fall out.

The induction coil is made as follows: around the previously cooked plastic tube are gradually winding copper wire covered with enamel. It will take about 90 turns. The resulting self-made device is required to connect to the pipeline network. A small portion of the pipe is cut out of the pipeline, and the homemade induction boiler is installed instead. It is connected through the inverter and simply start the water.

Second option

This option provides for the use of a three-phase transformer with the possibility and fixation. In addition, the welding machine will also need. For the manufacture of the device, you need to cook two pipes in such a way that they look like a bagel in the context. This design is performed as conductive and heating function. Then they wind the winding, directly on the boiler body in order to more efficiently work, despite the low weight and sizes. It uses a standard heat heating scheme: it receives a large amount of thermal energy when contacting with winding.

The scheme of manufacturing such a design is somewhat more complicated than in the first version. The boiler is equipped with two nozzles, both for the input of the cold coolant, and for the output of heated. If you come up with and independently build a protective cover, you can minimize thermal losses.

Features of independent installation and operation of homemade boilers

As in the case of boilers produced at the factory, only the heating system of the closed type may be suitable for mounting the homemade induction unit. It should include a centrifugal pump that creates a constant circulation of the coolant inside the heating system. The plastic pipelines common today are better suited to install a homemade induction boiler. All regulations relating to the installation of shop boilers should be fully complied with the fully and in this case. If you install the controls and safety devices on the system, then your homemade installation will be little to yield to your factory fellows.

Although it is difficult to make such a device, and it is better not to take into this case without having "direct hands", to exploit its pleasure. After all, together with the convenience of operation, we also get serious energy savings.

Due to the constant increase in energy prices, owners of country houses and urban apartments in transition to alternative, more profitable types of heating, mainly choosing autonomous options. Some prefer to establish not to overpay for central heating, which in some regions is paid not only in the winter, but also in the summer. Other housing owners are interested in heating at home with electrical appliances.

Electricity is more convenient in the sense that it does not require coordination with permits, compiling and approving the project to install such a water heater. But many scare up high rates. So, it is necessary to stop your choice on electric boilers, characterized by increased efficiency and efficiency of work. This is definitely the aggregates of the induction principle of operation can be attributed. They rightly created a fairly high competition of gas heating devices.

But the induction boiler itself is very checked "pleasure." Therefore, many homemade craftsmen are interested in the question - it is possible to make an induction boiler of heating with their own hands. It turns out yes, this is done by the task, but requiring certain skills and knowledge, especially in the field of electrical engineering.

Immediately make a reservation about the following. The author of this period is not a supporter of "self-herders" in the field of electrical equipment working with stresses life-threatening. Therefore, this publication should be considered as an overview of possible options, but not as a step-by-step manual for action. It should be very soberly weighing your strength, knowledge and opportunities before you begin to fulfill such a task.

What is the induction boiler?

Induction heating systems began to be used in the 1980s last century at industrial enterprises. The household devices appeared only in the mid-nineties. Over the past decades, they were improved, and some updates were made to their design, however, the principle of their work remains unchanged.

The name of these heating systems and devices in itself is in itself saying that electromagnetic induction is based on their functioning. The essence of the principle of operation is that if through the wire is a sufficiently large diameter in the section, accepted in the form of a coil, skip the alternating current, then a powerful electromagnetic field is created around this primary winding. If the conductor will be in this field, then it will induce (induced) voltage. Well, if the power lines of the field crosses the core located in it from the alloy with magnetic properties, it turns out a kind of short-circuit contour. And due to the appearance of wandering currents of Foucault on it, very fast and strong heating of this material occurs.

This principle is widely used, for example, in the steel industry. We found it use for fast and high-temperature water heating. It is clear that the core in this case will be a pipe or another channel, which circulates the coolant.

And the most affordable example of an induction heater is a wire wounded on a pipe made of dielectric, which will isolate a magnetic core, placed in its internal space.

The wire coil is connected to the power supply and creates an electromagnetic field. As a result of the effects of an alternating electromagnetic field, the metal rod core will be heated, transmitting heat to the heat carrier, which then enters the pipes and radiators of the heating circuit. As a coolant in autonomous heating systems, oil, water or ethylene glycol can be used.

This, of course, is a very simplified explanation. In induction boilers of industrial production to the heat exchanged ferromagnetic core, there may be a whole labyrinth of pipes or channels, and often, for example, in vortex heaters, the instrument housing is also involved in this process.

In the heating systems of a small length, the coolant, heating, will to go up, and the created natural pressure is usually enough for its natural circulation. If the heating line pretty long And the branched, tied to collectors with a further distribution of the flow of the coolant in separate circuits, then one or more circulation is set to the system, since without them the desired movement of the coolant will not be achieved.

Is the induction method of heating the heat carrier are effective and reliable?

Before buying or proceeding with the manufacture of an induction boiler, it is worth understanding how effective this method of heating is. In specialized shopping centers from sales assistants, you can only hear the positive characteristics of systems working on this principle. However, not everything that will be said, all 100% corresponds to reality. And these heating aggregates have their own so called, "underwater rocks".

Sellers operate with a whole list of theses, trying to increase sales of boilers working on the induction principle:

• For example, the approval is common that the principle of operation of these instruments is an innovative development.

In reality, this is not true, since electromagnetic induction was opened back in 1831 english Physico-Experimentator Michael Faraday. In the second half of the twentieth century, induction systems were successfully used in the metallurgical industry.

From this we can conclude that these devices are unlikely to be attributed to innovative technologies. However, there is also its own "plus", since this system has already been tested by time and proved its effectiveness.

• The following important quality on which sellers is doing is the cost-effectiveness of the induction boiler. It is usually argued that this type of aggregates consume energy by 25 ÷ 30% less than other electrical heaters. Is it possible to agree with this?

Prices for induction boilers heating

induction boiler heating

Probably still not. Anyway consumes electricity, respectively, its power specified by the manufacturer in a technical passport. That is, to generate a single kilowatt heat, in the very ideal case (with 100 percent efficiency), the device needs to consume kilowatt electricity. MoreoverEven with the parameters named, the Aggregate efficiency may be less, since much depends on the specific operating conditions of the boiler.

From the power and efficiency of the heating element, the heating time of the coolant to the desired temperature depends. It must be said that a part of the energy spent, one way or another, is spent in good, since the materials from which the details of the device are manufactured are not zero resistance. However, the heat loss from the work of the induction boiler does not go "into the chimney pipe", and remain indoors where the device is installed, which is often the obvious advantage.

So, it suggests that it is unlikely to seriously save on electricity when using an induction boiler. But the effectiveness of them and the heating rate is really high.

• Despite the approximate service life specified in the technical service (not to be confused with the warranty!), Sellers assure that the induction heating boiler will serve at least 25 years. It is necessary to agree that this information is reliable if the electronic control unit is performed efficiently. The block includes semiconductor elements, which can still fail. As a rule, manufacturers give a ten-year warranty on component elements of the electronic unit. However, quite often they work perfectly for 25 ÷ 30, and even more years.

On and in the bolet itself, by and large, just nothing to break. Thus, the primary winding, usually manufactured from copper, has a large margin of safety and serves a long time if its proper cooling (and this is ensured by circulating the coolant).

The core rod or the material of the internal channels of course will eventually begin to collapse, since the aggressive medium of the coolant will constantly have an adverse effect on it, as well as the alternation of cooling-heating. However, in order for it completely become unsuitable for operation, must pass more than a dozen years.

Considering the design of the boiler operating in the induction scheme, it can be concluded that it is much more reliable and durable heating devices, in which as Heating elements are used by Ten.

Prices for heating boilers

boiler

• Another quality that is placed in a plus induction heating device is a silent job - allegedly it distinguishes it from other heating units. The question arises, is it so?

But here, just, with the accuracy "on the contrary." Yes, electrical heating units function silently, since during their operation, acoustic oscillations are not created and mechanical nodes are not used. However, it is in the functioning of an induction device that low-frequency oscillations can be clearly fastened, which can irritate people with aggravated hearing. This negative phenomenon is minimized in vortex-type boilers, in which the supply voltage to the primary coil is pre-converted to high-frequency.

In addition, if the system has a circulation pump of low quality, it can also be a source of light irritating noise. But it already applies to all heating systems, regardless of the type of boiler. But the modern range of pumps fully allows you to purchase a completely silent model.

• Copper compactness Buyer can evaluate visually. It can be said that this unit consists of a segment of a certain length pipe that does not take up a lot of space, unlike other heating devices. True, the mass of the induction boiler is usually very impressive, that is, reliable brackets will be required.

However, you should not forget that the place is required for the associated elements of the system, as well as layout of contours and the installation of collectors, if the scheme requires. If it is necessary to heat a fairly large area of \u200b\u200bthe house, several induction devices are often installed, and a lot of space will be required for the entire system.

• The statement that the boilers of this species are completely safe, moreover, this quality of boilers is more pronounced than their inner analogues, incorrectly. The safety of operation in these two types of heating devices is about the same, and depends on the proper connection and on the performance of the systems laid in them from extreme situations.

For example, if a coolant leakage occurs in the induction device, and the electromagnetic field will not turn off on time, and the heating of the internal core will continue, the body and fastenings can be mounted literally in minutes. Therefore, purchasing the device or designing it yourself, you need to pay attention to the automatic shutdown of the unit in case of an emergency.

As can be seen from the above information, in induction boilers, as well as other heating units, have their own shortcomings, and they are not unique devices that allow you to pay for heating of a decent penny. However, their effectiveness is not questioned. And more thanks to the compact size of the boiler, it can be placed in an apartment, for example, in niche, so that it will be virtually impaired.

How to independently make an induction boiler?

There are quite a few designs of induction boilers. Some of them are complex for independent execution, others are simpler. Next will be considered relatively available options that can be made at home. However, to embody these projects into life, specific materials and tools will be required.

First option - with using induction hob Panels

This version of the heating device can be called experimental. It is suitable for heating a small room at 20 ÷ 25 m². In the heating circuit heated from such a device, it is best to install or radiators that quickly warm and give heat into the room. In addition, the volume of such radiators is small, so a small amount of coolant will be required, which will quickly warm in the induction mini-boiler.

The source of the variable electromagnetic field in this project is the induction cooking panel, which may have been replaced with a more modern model, and so far it is lying in the storeroom.

For the manufacture of this model of the heating device operating on the induction principle, the following materials will be required:

• Steel profile pipe 50 × 25 mm, ten segments of 500 mm long and two in 300 mm - for the manufacture of a heat exchanger of the boiler.
• Steel profile tube 50 × 30 mm, two pieces of 500 mm long and one in 700 mm - for the manufacture of the bracket.
• Steel pipe with a diameter of 20 ÷ 25 mm - two segments of 120 ÷ 150 mm long.
• Steel sheet with a thickness of 3 ÷ 4 mm for the manufacture of an expansion tank with a size of 270 × 270 × 100 mm.
• . Their quantity will depend on the specific scheme, which is done for a specific placement of the boiler and its strapping. To connect pipes, the associated elements are required - couplings, corners, threaded fittings, and the like. - Here you can show your own vision of strapping and pipe wiring.
• Ball cranes that will overlap the movement of the coolant if necessary for preventive or repair work on heating equipment.

In addition to these materials, it is necessary to prepare some other devices and accessories necessary to complete the installation and for installation in the strapping of the boiler.

Prices for polypropylene tubes

polypropylene pipes

• Circulation pump.
• Induction electric two-component The stove is differently called the panel in a different way.

To perform work, you will need some tools and appliances, as well as, of course, work with them:

• Device for soldering polypropylene pipes.
• Gas key.
• Electric drill.
• Bulgarian (grinding).

Circulation Pump Prices

circulation pump

Work on the manufacture of such a heating induction boiler is carried out in the following order:

Illustration
	The first step, with the help of "Bulgarian", a profile steel pipe is cut into segments of the desired length. Of these, the housing of the heat exchanger will be manufactured, according to which the coolant will circulate. Segments fold close to the end side, it turns out a kind of battery. They must be fixed in pressed to each other. Next, the pipes are welded with a point welding. First, they are grabbed along the edges, and then throughout the line of the joints, every 100 mm. For the faster cooling and strengthening of welded points, as well as for cleaning from welded Gary, it is possible to shed a jet of cold water to clean the design.
	The next step is to fir the edges of the resulting "battery" - for this they are cut by grinding. Smooth edges are necessary, as they will be closed with a metal P-shaped profile (channel), which should be perfectly installed on the edges of the square pipes cooked together.
	The P-shaped profile can be purchased at a finished form or make it yourself, cutting out one wide band from the profile pipe. Such details need to prepare two pieces. Moreover, the carved bands will continue to be used to close the end edges of the P-shaped parts, as well as for the design of the brackets.
	Now, the resulting scope profile must be very gentle by a solid seam to the edges of the "batteries". The space that will be formed by this part will make it possible to circulate the coolant through pipes - two kind of collector are obtained. It should be noted here that it is quite possible to make a heat exchanger-battery in the form of a serpentine - it will simplify the circulation of the coolant, it will warm up faster, which will increase the heat transfer.
	Further, from one of the bands that remained after the manufacture of P-shaped profiles are cut down four plug inserts, in size, corresponding to the holes formed by the P-shaped profiles, welded to the ends of the battery. Then, they are welded to the place intended for them with a solid seam, as the design should turn out to be hermetic.
	Now, on the end sides of the battery you need to drill two holes in which the segments of pipes having a thread from the outside are breeding. One nozzle should be located at the bottom of one side of the battery - it is intended to enter the cooled water into the heating boiler (the so-called "return"). The second nozzle is welded into the hole located at the top of the opposite side of the structure. Through it, the heated water will enter the heating circuit (feed). In addition to them, in the center of the side, also with welding, segments of the profile pipe with a length of 100 mm are fixed.
	Welding points and seams on the finished heat exchanger are cleaned with a grinder and give the designs a neat appearance and smoothness. Especially carefully you need to process the rear side of the heat exchanger, since it should be pressed the heating surface of the induction plate.
	Next, the finished assembly needs to be primed and then covered with heat-resistant paint intended for metal elements of the heating system.
	The next step from metal panels is made expansion tank. Its parts are welded with each other with a solid seam, as it should be sealed. In the lower side of this detail of the system, the nozzle with an external thread is crashed to connect to the heating contour. It must be said that the expansion tank can be bought and in the finished form. Its capacity is chosen depending on how much coolant will be in the heating circuit - it is possible to proceed from the value of 10% of the volume.
	Next, you need to prepare a frame-bracket for installing an induction panel and fixing the heat exchanger. In this illustration, you can see that the bracket consists of two vertically arranged profile pipes and a lower shelf. The latter can also be made of a profile pipe with which one narrow and one wide side is cut. In the middle of the vertical profiles, the segments of the profile pipe are welded. Their location must be calculated so that they can docile with the cuts of the pipe fixed on the ends of the heat exchanger. Then all the parts are sealed with the welding, and the lower horizontal part of the design should form a shelf to which the induction panel will be installed. After that, the heat exchanger is fixed on the bracket with the segments of the pipes welded on its ends. However, there should be a gap between the bracket and the heat exchanger, in which the induction panel can be installed, so that it is tightly pressed against the heat exchanger with its heating elements.
	The induction panel for cooking works on the same principle as the boiler, since the coils induces the powerful variable electromagnetic field inside it. This field and will become the "initiator" of heating with steel profile pipes of the heat exchanger battery. The convenience of using it is that all electronic and electrical modules are inside the design, and the external panel coating makes the device safe. By installing the panel into the bracket behind the heat exchanger, it is pressed to its surface.
	Now it remains only to bring pipes to the boiler that will connect it with the heating circuit. To do this, polypropylene or metal-plastic pipes can be used, the main thing is that they are intended for hot water having a temperature of at least 95 degrees. As mentioned above, the outlet of the heated coolant from the installation is associated with the pipe delivering it to radiators, as well as with an expansion tank, which is fixed on the wall under the ceiling.
	The entire system will not effectively work without a circulating water pump, which can be installed in any convenient place of the heating circuit, but ideally - on the pipe "Frames" before the input of the boiler - there is a lesser extent being exposed to high-temperature effects. It is desirable that it is located not far from the power outlet.
	It remains to fill the system with water (coolant), check the tightness of all connecting nodes. If everything is normal, you can run the boiler. The illustration shows a trial start, using carrying. In real operating conditions, certainly it is necessary to bring a separate supply line with the corresponding cross section of the wire and the ground circuit.

Using the induction panel, you can make another option of the boiler, which will be more efficient than the above described above, albeit less compact.

The peculiarity of this option is horizontal arrangement induction panel with installed directly to heating pads located in it, heat exchange blocks. Here the design, in fact, works in the same way as the usual tile on which is installed with water with water and heated to high temperatures. The difference lies in the fact that the capacity ("pan") is made from ferromagnetic Alloy, all its walls are actively heated. These containers are made with hermetic, associated with each other, and the heated water does not evaporate, but goes into the heating circuit connected to such a boiler.

The second option - with a homemade induction coil and welding inverter

The second version of the inductor heater of the boiler is manufactured on the basis of a high-frequency welding inverter. It is desirable that the device is equipped with a smooth adjustment of the welding current. The power of the inverter must be directly proportional to the power that the heating boiler must have. The most suitable option for homemade design is an inverter in 15 amp, but if necessary, you can make it more powerful.

It should be properly understood that the connection of the water heater is made by no means to the terminals of the welding wires - nothing but the short circuit in this case will not work. The inverter will have to be somewhat modified - the primary winding of the generated heater should be connected after a high-frequency converter, instead of the induction coil of the inverter itself. If it is difficult to deal with this very much, then consult with a specialist in this area.

This principle of heating and is used for heating the coolant that It passes through the same pipe placed in the electromagnetic field. The option shown below can be called a very controversial, but the master who tried it in practice, convinces it in its performance and efficiency.

As will be seen, manufacturing costs are minimal, so if you wish, it is possible to carry out an experiment. Let even power not enough for full heating - it is possible that it will be an acceptable solution for heating water for domestic purposes.

Illustration	Brief description of the operation
	So, in addition to the welding inverter unit, a number of parts will be required to create a heater. As a hull, which will be part of the heating circuit, as well as the basis for the formation of an induction coil and heat exchanger, a segment of a polypropylene tube with thick walls (PN25) is 400 ÷ 500 mm long, designed to transport hot water. It is desirable that the inner diameter of the pipe is at least 50 mm, that is, a pipe with an external diameter of 75 mm is used. You can take and smaller, say, with an external 50 mm, internal - 33, but the performance of the heater is understandable, will decrease. A steel wire or a metal rod with a diameter of 6 ÷ 7 mm is reduced - a length of 40 ÷ 50 mm is cut from it. These elements will take on the role of the ferrimagnetic heat exchanger core. Other sources of heat exchangers are possible - it will be referred to below.
	Instead of sliced \u200b\u200bsegments of the rod inserted into the cavity of the pipe, one thick metal rod or a steel pipe of a smaller diameter, steel auger, or other products with magnetic properties and convenient indoor PVC can be used. So, practice filling the pipe with steel balls, a large chips, unnecessary nuts, etc. If small metal elements are used to fill the pipe, from which the coolant will be heated, then one edge of the pipe must be closed with a metal grid. Then fill the steel elements of the filler into it, and then close the second edge with the mesh.
	You can use a metal auger with frequent coils or several metal tubes with a diameter of 4 ÷ 5 mm, which will be tightly installed in the polypropylene body tube. They will provide a large area of \u200b\u200bdirect heat exchange with circulating water. Some wizards are used to fill the "boiler" steel wire or even ordinary kitchen rods from a stainless steel, tightly scoring with a polypropylene tube.
	By purchasing kitchen rods for such purposes, there will be necessary to check on whether they have magnetic qualities. To do this, departing for buying in the store, you can take a regular magnet with you and attach it to the product for cleaning the dishes. If such a urine is magazine, it means that it is suitable for filling the cavity of the induction heat exchanger. Since the chips are thin, it will warm up very quickly, giving thermal energy to the coolant, which will pass through it. An optional filling of the pipe with a metal chip can, perhaps, be called the most simple, affordable and efficient option.
	When the housing of the induction heat exchanger is filled with metal products, the adapter couplings are welded at its edges, leading its large diameter to the diameter of the heating circuit pipes. Then, if it is necessary to install the device in a particular place, the corners of the coolant in the desired direction are welded through the cutting of the pipe. It will be nice to breed the coupling with American nuts - So the heating device will be removable, for example, to perform any repair and recovery or preventive work. The specific scheme of the splitting of these corners-taps or, if necessary, direct pipes of the pipe is prepared in advance, based on the specific conditions for installing the heating device and wiring the contour.
	Next, you need to stick the textolite sticks or rods that will serve as the basis for winding an induction coil. Textolite is selected because it has excellent dielectric qualities and is not afraid of elevated temperatures.
	At the edges of the heat exchanger case, from the same textolite, you need to make counter-compensators for the wire ends, 12 ÷ 15 mm high. They will be required to locate terminal contacts through which the boiler will connect to the inverter unit.
	The coil is wound from an isolated wire with a cross section of 1.5 mm, which is used for winding in transformers. The coils are stacked on top of the textolite rods in a step of 3 mm. The ends of the cable are fixed on textolite retainers. Winding should consist of a whole segment of a well-insulated cable, since it is precisely the electric current that creates the electromagnetic field necessary to warm up the heat exchanger core will be held.
	To create a winding, you will need 10 ÷ 10.5 m insulated cable from which 90 turns should turn out. Its length and the size of the section was determined after the correspondence of the coil parameters located on the "native" inductor of the welding machine. To connect the coil to the welding machine to the ends of the winched wire, terminals are fixed. The connection is necessary to isolate well.

All this design, in order to safety, can be placed in the casing, which will serve as an external insulation for the device. It must be made of dielectric material that can serve as a pipe of large diameter from PPR, PVC or PE. In the protective cover, the holes are provided for the release of the ends of the power cable, the output of the cutting nozzles in the heating circuit or hot water supply. For example, ends can be sealed with plugs, putting on heat-resistant glue and making in them or side parts of the housing of the holes for nozzles. Here, in principle, a wide field for the fancy of the wizard.

The test of this device can be carried out only after installing it into the heating system and filling it with the coolant. Otherwise, when heated, the polypropylene tube of the hull can quickly melt.

This illustration shows an exemplary scheme of an autonomous heating circuit with an inductor boiler installed in it. The system consists of the following elements and nodes:

1 - Connecting to an electrical network through an energy converter. In the above construct, a high-frequency welding inverter converter is used as it.

2 - Induction water heater itself.

3 - elements of the "Security Group", which can relate to a pressure gauge, thermometer, safety valve and automatic air road.

4 - ball valves overlapping water supply on a specific section of the contour, as well as for feeding or draining water from the heating circuit.

5 is a circulation pump required to create the necessary flow of coolant.

6 - mechanical (mesh) for cleaning the coolant. The filtering of the coolant allows you to significantly increase the service life of the boiler equipment.

7 is a membrane expansion tank required to compensate for the temperature expansion of water or a different coolant.

8 - heating radiator. In a system running from an induction boiler, a bimetallic or aluminum radiator will work efficiently. They are distinguished by small volumes and very high heat transfer.

9 - line for fueling the water system or emptying for prophylactic or repair work.

In the conclusion of the publication, it is necessary to emphasize once again: if there is no experience with electrical products, the knowledge of the beginning of physics was forgotten, there is no confidence in their skills in plumbing and plumbing work, then it's not worth it for such a thing. It will be best to purchase an induction boiler in the finished form or in case of emergency, Order the device at the experienced master who not only makes it, but will check its performance and safety.

Video: Master is divided by secrets of independent manufacture of induction boiler

A fundamentally induction boiler is an inductor (transformer) with two types of winding. The emerging vortex currents follow the short-circuited turn, which is the boiler housing. The secondary winding at the same time receives energy that is converted to a heat heating coolant.

Induction boilers for the heating of a private house have the following advantages:

• provide double heating of the coolant;
• the house is quickly heated;
• a variable and direct current network is used to work;
• do not require special installation for installation;
• can operate at low voltage;
• do not contain details failing;
• the leakage of the coolant is impossible;
• do not form scale;
• fireproof;
• Efficiency is about 100%, does not depend on the service life;
• allow you to choose a coolant (water, antifreeze, oil);
• have a manufacturer's warranty up to 25 years;
• mounted homeowner without attracting specialists.

What induction boiler is better to choose

Manufacturers offer two types of induction boilers - single-phase 3-phase m. Many boilers are manufactured with control panels. The selection of the induction boiler is made at the calculation of the capacity of 60 watts per 1 square meter. M heated area. If the house is not intended for permanent residence, then the specified power rate can be reduced to 50 watts. With an area of \u200b\u200bhouse 120 sq. M. In this case, an induction boiler with a capacity of 60 kW should be installed.

According to consumers, the main disadvantage of induction boilers is their high price - such boilers are much more expensive than shadan. But in this case, the high cost of such equipment is justified: induction boilers serve as longer than those who form scale and dramatically lose in heat transfer.

Comparative calculations of the efficiency of the operation of thenex and induction boilers indicate that the difference in the cost pays off in the first year of exploitation boiler. At the same time, the colder season of heating, the faster such a boiler will pay off.

The efficiency of the induction boiler and electricity consumption make it possible to consider it energy-saving equipment. Together with the advantages of induction boilers, consumers note the need for housing insulation - only in this case one can count on the high efficiency of the equipment.

In the photo, my choice - an induction boiler Epo Evan 9.45 kW

How much is the induction heating of a private house

We calculate the monthly costs of heating with an induction boiler House of 200 sq.m. For heating such an area, it will be necessary to purchase a boiler with a capacity: 200 x 60 \u003d 12 kW.

The cost of heating per month will be:

C \u003d M x in x d x t, where:

• M - boiler power;
• In - work time per day (10 hours) in cyclical mode;
• D - the number of days in a month (30);
• T - the tariff value of electricity, depending on the region (we will take it conventionally 3 rubles / kWh).

Substitting the values, we obtain the cost - 10,800 rubles per month.

The efficiency of induction boilers does not change during the entire service life, i.e. The cost of heating will remain constant throughout the service life of the boiler. According to the reviews of the homeowner, which are used for the heating of the house by Tannema boilers, after the first year of operation, the effectiveness of work in connection with the formation of scale drops by 10%, and later it decreases even more.

How to make induction heating of a private house with your own hands

Induction boiler can be made independently. Consider two options for the manufacture of such an aggregate.

Induction boiler made of welding inverter and plastic pipes

For the production of the boiler will be needed:

1. high-frequency welding inverter with a so good adjustment of current with a capacity of 15 amps;
2. stainless steel rod or segment wire with steel 50 and diameter 7 mm for heating element;
3. plastic tube thick-walled, the inner diameter is slightly less than 50 mm;
4. copper wire for winding.

The pipes of the cold and output of the heated coolant are fastened to the housing of the pipe. The inner space is filled with wire segments and closes on both sides with a metal grid. The induction coil needs to be done, wound on the plastic pipe enameled copper wire (approximately 90 turns). A homemade induction device connects to the network into the location of the cutting pipe.

Induction boiler made of welding machine

For the manufacture of the boiler you will need:

1. welding machine;
2. three phase transformer.

For more information about the production and connection of the induction boiler, see the video at the end of the page.

• It is necessary to set the manufactured devices at a safe distance from walls and other devices (at least 30 cm), on the floor and ceiling (at least 80 cm);
• Safety group (air safety valve, pressure gauge) is better accommodated at the outlet;
• Induction boiler should be grounded.

conclusions

1. Induction boilers are more economical and more reliable than electric boilers of other structures.
2. Their main drawback - high cost, can be avoided by making the unit yourself. According to the experience of masters, the boiler in this case will cost several times cheaper. Alone correctly manufactured induction boiler for reliability is not inferior to industrial.
3. Induction boiler is important to establish correctly, providing all security measures. The reliability and efficiency of induction boilers are crucial when choosing.

So I bring the example and China, and the West ..
As long as I had a welder more than 40 kg, the counter was badly held and the traffic jams were flying out, could not carry it without a car, and the navel drew to the transfer, dreamed of small devices and cook aluminum by a conventional welder. And all smart e-handers did not shut their brains, and refer to smart formulas.
But I wandered the West, and behind him and China .. and miracles began !!! And now the LED lamp gives approximately the same light stream, but 10 times it takes less email, welding machines almost 20 times easier !!! I now have such an inverter 2.5 kg, works with electrodes from 1 mm2 to 4 mm2 by cross section, and eats three times less email. And I do not care about the laws of J. Nezza, or as they are still there .. I got more economical, practical, profitable goods and tools. And it means it works, contrary to our clever and cleverness from the 17th century !!! I personally need practical things that save my budget. And, by the way, on heating and power of these calorifications .. Invented monopolies from the government, those formulas, which, with the Slask-sales system and the USSR, was not. Then the power of paid thermal energy was calculated and paid for the output of each section of the heating battery, which were also measured in Gcal. I worked in the system of snacks, and dealt with the nomenclature of more than 10,000 products. And therefore, it is simply a fool of what is now considered not from the time of hot water flowing, and the difference in the loss of temperature at the outlet inlet, but they consider it to 1 m2 instead of 1 kW of one piece of iron or aluminum battery, and refer to convection heat walls, ceilings, and other bearing structures. It seems that these carriers also distinguish heat, which should also be taken into account during the cost of the coolant. But not by the sensor on the section, and not by the volume of the transmitted coolant per unit of time. Namely, these units should consider the cost of money for the production and returns of this heat. But who will be checked at the government level ?? He needs to collect more money from the population through the monopoly of Lukoil and other resourcemen. Therefore, these stately calculation standards have been introduced to accrual payment from the population to which the smart debaters are. And therefore, the clever who believe who is 1 m2, then on the induction of the walls .. I apologize better to silend.
This Ten on the cost of the host for heating when choosing a heater. It should be covered, and not to show the knowledge of the theory of 17-19 centuries ...
Look at the street and on the calendar. Now the 2nd tent of the 21st century. And the satellites from Venus are returned .. and you sit there, on thendes sit ... Well, sit. I choose induction heating and water. I make a pension so much.

In the context of modern market relations, the price of products and goods grows quite quickly and regularly. Everything is becoming more expensive, and energy strokes. The owners of residential buildings and premises are forced to seek favorable ways options without losing the quality of the coolant. One of these ways is the induction boiler with his own hands. The principle of operation of such equipment is based on the most simple and understandable principle of electromagnetic induction. In order to understand how it works, you can present a thick wire through which the current passes. There is an electromagnetic field around this wire. If you send the transformed energy to the metal plate, you can get a heat dissipation surface.

The main advantage of the induction boiler is that it can be easily made with their own hands, not even having an appropriate physico-technical education. It suffices to understand the principle of its work and collect all the necessary materials. What are our article.

Device

The principle of work of the self-made boiler is not different from industrial. This is a design consisting of a heating circuit and placed inside the pipe with a winding and a steel core. The contour must be made of ferromagnet, that is, such a material that does not attract and does not respond to the steel core. The generated electromagnetic field heats the contour and heat is released.

Considering that in this design, the generator is the coil, the effectiveness of its work can be changed by the number of turns of the winding and the type of material from which it is made.

To date, induction boilers call hardly the most efficient and economical way of heating large and small premises. Whether this will help to deal with video reportage, where the most famous abstracts about induction boilers are discussed.

Before proceeding with its own assembly, it is necessary to figure out in detail what elements are included in it and what principle they work.

The work of the coil with winding is largely identical to the work of the tubular electric heater (TEN), which also converts electricity into thermal energy.

The easiest type of induction boilers is implemented by the principle of an electric inducer when the incoming electricity is converted to an electromagnetic field.

To do this, use 2 types of winding primary and secondary.

The primary winding (contour) is necessary for the formation of a vortex current of incoming electricity. The magnetic field from the vortex stream is transmitted to the secondary winding, which appears as the main heating element of the boiler. It is from the secondary winding that the heat is transmitted to the ferromagnet and heats, respectively, the coolant.

Scheme

The main element of the equipment is the case, and it is according to its form that you can define a homemade boiler in front of you or industrial. The latter is always manufactured according to the principle of cylindrical winding, which is rational in the conveyor conditions. The homemade winding is traditionally made in the form of torus (torror) - W-shaped turns planted on the core. This method is more rational, as it allows to reduce the mass and dimensions of the finished design, but at the same time increase the efficiency.

The IR body includes the following mandatory elements:

• core;
• external contour;
• electrical insulating material;
• heat insulating layer.

In homemade boilers, the volume of thermal energy transmitted is approaching 97%, which is indeed one of the most effective heating methods.

The advantages of such boilers

1. The maximum simplicity of design provides its long-term operation - the minimum term is 15 years.
2. There is no mechanical wear as the entire boiler and the elements included in its composition. There are no dynamic parts here, so wear in principle is impossible.
3. The winding made of copper wire has a minimum reserve of strength of 25 years. And in induction boilers, where the coils do not come into contact with each other, such a potential is even more.
4. The only potentially dangerous detail is a core, which over time gradually collapsing, but this process continues for several decades.
5. In industrial types of boilers, the warranty period applies only to transistors that provide electricity supply. The announced period is 10 years, although in reality, even after 30 years, transistors worked correctly.

Induction boilers do not go to any comparison with any other electrical analogues, and even more won in comparison with the Tanes.

If you assess the advantages in relation to conventional boilers working on solid, liquid or gaseous fuel, then the following can be distinguished:

• the coolant heats up twice due to heat coming from the primary and secondary contour;
• due to the double work of the contours, the time for heating is reduced halfway;
• minimum inertial level;
• there is no scale on the walls due to closed water.
• no need for regular technical and maintenance.

How to make it yourself

Necessary materials:

• pieces of steel wire Ø 7mmmdlin 50-70mm;
• copper wire Ø 5-7mm;
• pipe wall thickness 3-5 mm;
• metal grid;
• adapters for the strapping of the boiler.

In addition, you will need tools (pliers, clamp, etc.) and inverter welding.

For the boiler housing, a plastic tube with a wall thickness is 3-5 mm and a diameter of 50 mm will be needed.

In order to determine all the necessary characteristics of the induction boiler, use the scheme:

Manufacturing process

Cut the steel wire into a large number of pieces - they will be placed in the boiler housing, in order to increase the area of \u200b\u200bheat pumping. For this, the housing must be tightly closed on both sides.

The adapter on the receiving pipe welded inverter welding, the adapter to the feed pipe along which the coolant comes out, sit on the threaded connection.

For the manufacture of an induction coil with your own hands you will need a copper wire. Screw it on a plastic pipe, making an equal distance between stripes. The number of turns varies from 90 to 100, with more than them, the higher the efficiency of the boiler.

The induction coil must be connected to the high-frequency inverter. The manufactured design can be installed at any point of the pipeline, and for this there is no need to mount a separate system or make additional pipe branching

After you have collected the entire design, it is necessary to insulate the open sections of the coil so that its work is absolutely safe for others.

In order to accurately figure out how to collect induction boiler with your own hands and what you should look at the video:

The advantages of induction boilers are indisputable - silent work, the maximum possible efficiency of 97%, low power consumption, long service life, calculated by dozens years and much more. The average price of the household boiler of industrial production is 20-25 thousand rubles, which pays for the first 3-5 years of operation. Make your own hands the induction boiler is easy, although it will be necessary for some time and certain materials. If you are so far thinking, do or buy, contact it initially to specialists who will tell if there is an opportunity to establish a similar boiler in your system.