Homemade induction boiler for heating a garage. How to make an induction boiler with your own hands? Induction heating boilers: reviews and complaints

With the topic of the efficiency and economy of induction boilers, the further we go, the more incomprehensible everything becomes. The discussion is active, including on many forums. But only those that prove that these savings are inventions of unscrupulous sellers remain open and accessible. Others become inaccessible.

The main argument of opponents of the use of induction boilers is the law of conservation of energy. Moreover, it is interpreted as follows: no matter what heater is supplied with 1 kW of electricity, it can only generate slightly less than 1 kW of thermal energy. A little less - due to losses and not one hundred percent efficiency. Because heating element, what induction heater will spend the same (or almost) amount of electricity to generate the same amount of heat. And since induction boilers are much more expensive, buying them is a waste of money.

Does an induction boiler save electricity or not? That is the question…

There were also opponents. There are few of them, but they exist. This theory does not belong to the category of simple ones, and we need deep knowledge. But the essence of the objection is this: when a heater consumes 1 kW of electricity, it produces 1 kW of energy, but not all of this energy is thermal. And in terms of the production of thermal energy, induction heaters turn out to be much more productive than traditional heating elements. AND direct to that confirmation - household induction cookers. They require less electricity to heat the same amount of water. This is easy to check: take two tiles of the same power - induction and with a spiral. Then put two identical pots of water, turn them on and note how much time each unit takes at the same power. The shorter the time before boiling, the less electricity is spent.

How to make your own induction boiler

Now about how to make an induction boiler with your own hands. If you do everything yourself, you need a lot of knowledge. For example, two electronics engineers tinkered for more than six months, transferred a lot of spare parts, and spent a lot of money on them. Working installation, in the end, they assembled it, they were very pleased with the result, but they only posted photos.

On the manufacturers' websites there is only general information with a demonstration of operating principles and no diagrams. It is, in general, understandable.

Those models that propose to make: fill a plastic pipe with pieces of wire and wind the wire on top, may work, but are clearly unfinished. Serious protection is needed: the coil turns are on top, and current runs through them. Moreover, from a 220 V network. In addition, there is no temperature control, which is fraught: the plastic melts. It is also necessary to calculate the speed of movement of the coolant and much more. In general, it is unsafe.

Below is a video that presents one of the options for such a homemade induction heating boiler. It is simple to perform:

Heating boiler made of induction stove or panel

But those who want to make an induction boiler do not necessarily have to assemble the heater themselves. All you need is to buy an induction household hob. It costs $50 and up. Next are the options:

This version of the boiler is made from induction cooker Really anyone can do it. Just pay attention once again - in order for a liquid or surface to heat up, the metal must be magnetic. Good stainless steel(non-magnetic) or aluminum are not suitable: Foucault currents do not propagate in them. In addition to the fact that you almost don’t need to do anything, this option is good because the tile has a control and safety system that will turn off the device in case of overheating.

Results

Of the three presented options for homemade induction heating boilers, two are not really boilers (or not boilers at all - depending on how you look at them). But at the same time, you can heat rooms with their help. Methods with an induction cooker are easy to test, especially easy for those who have such a cooker. To increase heat transfer in the tile + radiator option, you can arrange a fan (if necessary). But how well it works needs to be tested from your own experience.

Fundamentally, an induction boiler is an inductor (transformer) with two types of winding. The resulting eddy currents follow the short-circuited loop, which is the boiler body. The secondary winding receives energy, which is converted into heat, which heats the coolant.

Induction boilers for heating a private home have the following advantages:

• provide double heating of the coolant;
• quickly heat the house;
• they use AC and DC power for operation;
• do not require a special room for installation;
• can operate at low voltage;
• do not contain parts that fail;
• coolant leakage is impossible;
• do not form scale;
• fireproof;
• Efficiency is about 100%, does not depend on the service life;
• allow you to select the coolant (water, antifreeze, oil);
• have a manufacturer's warranty of up to 25 years;
• installed by the homeowner without the involvement of specialists.

Which induction boiler is better to choose?

Manufacturers offer two types of induction boilers - single-phase and three-phase. Many boiler models are available with control panels. The choice of an induction boiler is made based on a power of 60 watts per 1 sq. m of heated area. If the house is not intended for permanent residence, then the indicated power rate can be reduced to 50 watts. With a house area of ​​120 sq.m. in this case, an induction boiler with a power of 60 kW should be installed.

According to consumer reviews, the main disadvantage of induction boilers is their high price - such boilers are much more expensive than heating elements. But in in this case the high cost of such equipment is justified: induction boilers last longer than heating elements, which form scale and sharply lose heat transfer.

Comparative calculations of the operating efficiency of heating elements and induction boilers indicate that the difference in cost pays off in the first year of operation of the induction boiler. Moreover, the colder the heating season, the faster such a boiler will pay for itself.

The efficiency of an induction boiler and its energy consumption allow it to be considered energy-saving equipment. Along with the advantages of induction boilers, consumers note the need to insulate their homes - only in this case can they count on high efficiency equipment operation.

In the photo, my choice is an induction boiler EPO Evan 9.45 kW

How much does induction heating of a private house cost?

Let's calculate the monthly costs of heating a house with an area of ​​200 sq.m. using an induction boiler. To heat such an area, you will need to purchase a boiler with a capacity of: 200 x 60 = 12 kW.

Heating costs per month will be:

C = M x H x D x T, where:

• M - boiler power;
• B - operating time per day (10 hours) in cyclic mode;
• D - number of days in a month (30);
• T is the tariff cost of electricity, depending on the region (let’s assume roughly 3 rubles/kWh).

Substituting the values, we get costs - 10,800 rubles per month.

The efficiency of induction boilers does not change during the entire service life, i.e. Heating costs will remain constant throughout the life of the boiler. According to reviews from homeowners who use heating element boilers to heat their homes, after the first year of operation, operating efficiency due to scale formation drops by 10%, and subsequently it decreases even more.

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

You can make an induction boiler yourself. Let's consider two options for manufacturing such a unit.

Induction boiler made from a welding inverter and plastic pipes

To make a boiler you will need:

1. high frequency welding inverter With smooth adjustment current power 15 amperes;
2. stainless steel wire rod or pieces of steel wire with a length of 50 and a diameter of 7 mm for the heating element;
3. plastic pipe thick-walled, internal diameter slightly less than 50 mm;
4. copper wire for winding.

The cold coolant inlet and heated coolant outlet pipes are attached to the pipe body. Inner space filled with pieces of wire and closed on both sides with a metal mesh. The induction coil must be made by winding enameled copper wire (about 90 turns) around a plastic pipe. A homemade induction device is connected to the network in place of the cut section of the pipe.

Induction boiler from welding machine

To make a boiler you will need:

1. welding machine;
2. three-phase transformer.

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

• Manufactured devices must be installed on safe distance from walls and other devices (at least 30 cm), from the floor and ceiling (at least 80 cm);
• Security group (air safety valve, pressure gauge) is best placed at the outlet pipe;
• The induction boiler must be grounded.

conclusions

1. Induction boilers are more economical and reliable than electric boilers of other designs.
2. Their main drawback is high cost, can be avoided by making the unit yourself. According to the experience of the craftsmen, the boiler in this case will cost several times less. A properly manufactured induction boiler is not inferior in reliability to an industrial one.
3. It is important to install an induction boiler correctly, ensuring all safety measures. Reliability and efficiency of induction boilers are crucial when choosing.

In modern market conditions, the price of products and goods is growing quite quickly and regularly. Everything is becoming more expensive, including energy. Owners residential buildings and premises are forced to find profitable options without losing the quality of the coolant. One such method is a DIY induction boiler. The operating principle of such equipment is based on the simplest and most understandable principle. electromagnetic induction. To understand how this works, you can imagine a thick wire through which current passes. An electromagnetic field appears around this wire. If you direct the converted energy to metal plate, a heat-transferring surface can be obtained.

The main advantage of an induction boiler is that you can easily make it yourself, even without the appropriate physical and technical education. It is enough to understand the principle of its operation and collect all the necessary materials. Which ones are in our article.

Device

Principle of operation homemade boiler no different from industrial. This is a structure consisting of a heating circuit and a pipe placed inside with a winding and a steel core. The circuit must be made of a ferromagnetic material, that is, a material that does not attract or react to the steel core. The generated electromagnetic field heats the circuit and heat is released.

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

Today, induction boilers are called perhaps the most efficient and in an economical way heating large and small rooms. Whether this is so, a video report will help you figure it out, where the most famous theses about induction boilers are discussed.

Before you start assembling it yourself, you should understand in detail what elements are included in its composition and on what principle they work.

The operation of a coil with a winding is in many ways identical to the operation of a tubular electric heater (TEH), which also converts thermal energy electricity.

The simplest type of induction boilers implements the principle of an electric inductor, when incoming electrical energy is converted into an electromagnetic field.

For this, 2 types of winding are used: primary and secondary.

The primary winding (circuit) is necessary to generate eddy current from the incoming electricity. The magnetic field from the vortex flow is transmitted to the secondary winding, which acts as the main heating element of the boiler. It is from the secondary winding that heat is transferred to the ferromagnet and, accordingly, heats the coolant.

Scheme

The main element of the equipment is the housing, and it is by its shape that you can determine whether the boiler in front of you is homemade or industrial. The latter is always manufactured according to the principle of cylindrical winding, which is rational in a conveyor environment. A homemade winding is traditionally made in the shape of a torus (torroidal) - w-shaped turns mounted on a core. This method is more rational, as it allows you to reduce weight and dimensions finished design, but at the same time increase efficiency.

The IR housing includes the following required elements:

• core;
• outer contour;
• electrical insulating material;
• thermal insulation layer.

IN homemade boilers the volume of transferred thermal energy is close to 97%, which is truly one of the most effective ways heating.

The advantages of such boilers

1. The maximum simplicity of the design ensures its long-term operation - the minimum period is 15 years.
2. There is no mechanical wear of both the entire boiler and its constituent elements. There are no dynamic parts, so wear is basically impossible.
3. Winding made from copper wire, It has minimum stock durability of 25 years. And in induction boilers, where the turns do not touch each other, this potential is even greater.
4. The only potentially dangerous part is the core, which gradually deteriorates over time, but this process continues for several decades.
5. IN industrial types boilers guarantee period applies only to transistors that provide electrical power. The stated period is 10 years, although in reality, even after 30 years, the transistors worked flawlessly.

Induction boilers cannot be compared with any other electrical analogues, and even more so in comparison with heating elements.

If we evaluate the benefits in relation to ordinary boilers operating on solid, liquid or gaseous fuels, the following can be distinguished:

• the coolant is heated twice due to the heat coming from the primary and secondary circuits;
• due to double work circuits, the heating time is reduced by half;
• minimum inertial level;
• there is no scale on the walls due to the closed whirlpool;
• there is no need for regular technical and service maintenance.

How to make it yourself

Necessary materials:

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

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

For the boiler body you will need a plastic pipe with a wall thickness of 3-5 mm and a diameter of 50 mm.

In order to be able to determine all the necessary characteristics of an induction boiler, use the diagram:

Manufacturing process

Cut steel wire into a large number of pieces - they will be placed in the boiler body in order to increase the heat transfer area. To do this, the housing must be tightly closed on both sides.

Weld the adapter on the receiving pipe inverter welding, place the adapter on the supply pipe through which the coolant exits onto the threaded connection.

To make your own induction coil, you will need copper wire. Screw it onto a plastic pipe, making an equal distance between the strips. The number of turns varies from 90 to 100, and the more there are, the higher the efficiency of the boiler.

The induction coil must be connected to the inverter with high frequency. The manufactured structure can be installed at any point in the pipeline, and for this there is no need to install a separate system or make additional branching pipes

After you have assembled the entire structure, it is necessary to insulate the open areas of the coil so that its operation is absolutely safe for others.

In order to understand exactly how to assemble an induction boiler with your own hands and what follows what, watch the video:

The advantages of induction boilers are undeniable - silent operation, the highest possible efficiency of 97%, low energy consumption, long service life of tens of years and much more. average price domestic boiler industrial production is 20-25 thousand rubles, which pays off within the first 3-5 years of operation. Making an induction boiler with your own hands is not difficult, although it will take some time and certain materials. If you are still thinking about whether to make or buy, first contact specialists who will tell you whether it is possible to install such a boiler in your system.

Currently, there are many methods that allow you to minimal costs solve the heating problem. And among them, induction boilers should be called a rather attractive option. Today you can buy them, as well as make them yourself. Moreover, the second option is more preferable, since it allows the owner to save a lot.

The fact is that when operating such a device, the inductive energy of electricity is spent most efficiently. At the same time, this device has such advantages as safety and environmental friendliness, since during its use no substances are released into the atmosphere that can negatively affect health and the environment.

How it works?

In terms of its design, a self-made induction boiler has type of electric inductor, the design of which is represented by primary and secondary short-circuited windings. The purpose of the internal winding is to create eddy currents due to incoming electricity. This leads to the appearance in it electromagnetic field, which goes to the secondary short-circuited coil, which acts as a housing and at the same time a heating element. As for the secondary winding, it is necessary to transfer the received energy to the coolant. As the latter, it is permissible to use oil, antifreeze and purified water.

If we briefly describe how exactly an induction heating boiler works, then the latter must ensure the flow of water into the heating device.

After this, electricity goes to the inner winding. When voltage is created, the vortex flows move to the secondary winding, heating the core. Once the entire surface reaches the required temperature, the coolant begins heating by distributing heat.

Getting Started

Considering that the induction boiler used for heating does not contain complex elements, any person who has at least once had to work with cutters and a welding inverter.

Summary of the work completed:

Having completed all the above operations, we will have a device that only needs to be connected to heating system. To do the installation yourself, you will need to cut a piece of pipe and then insert an induction boiler there. After this, the coil is connected to the inverter, and finally water is released into the system. Please note that for the device to operate, the system must contain coolant.

If the boiler starts working in the absence of water or other coolant, this can end extremely disastrously. Due to lack of cooling plastic pipe will melt, as a result of which you will have to redo everything. In addition, you need to pay attention to grounding the heating device that you made yourself.

DIY vortex induction boiler

What is necessary?

To do this, you will need a three-phase transformer and a welding machine, which you must be able to use. An important advantage vortex induction boiler is that its design does not contain standard components that are unable to cope with intensive operation. Therefore, there is less chance that the boiler will fail.

A similar thing can be noted in relation to detachable connections, which are not used in this device. This completely eliminates the risk of leakage. Other advantages that a vortex induction boiler has include: absence loud noise while working. Therefore, there are no restrictions in terms of choosing a place for its installation.

How it works?

The design of a vortex induction boiler is represented by a pair of pipes. To combine them into a single product, a welding machine is used. The result should be a circle. Such a circle will be used as a core and at the same time a heating element. When creating a winding, it is placed on a plastic housing. Such a solution will help increase the efficiency and performance of the device. It is advisable to equip the device with a durable insulating cover that will protect against heat loss and current leakage. When using such a coolant, the latter interacts with the mentioned winding, which must be created according to the circuit used in simple induction installations.

How to install and install?

There is no need to rush into making a vortex induction boiler with your own hands. Before you begin to implement this plan, you should understand a number of important points:

Is it worth the risk?

Naturally, the process of making an induction heating boiler with your own hands associated with certain difficulties. Therefore, you should immediately prepare for the fact that this will take some time and require a lot of strength on your part. However, you can still achieve serious savings. The fact is that your costs for purchasing materials will be small. Everything you may need while working can be easily found at your nearest hardware store. The most important thing here is that if all the nuances of manufacturing this device are observed, it will be able to successfully cope with the functions assigned to it for 30 years.

To ensure that the final result does not disappoint you, perform all operations in a strictly defined sequence and do not rush. It’s enough to try once, and subsequently you will stop thinking that such work as making an induction boiler for heating with your own hands is beyond the capabilities of the average owner.

Conclusion

Despite the fact that today There are many methods available, which can effectively solve the problem of heating a private home, induction heating boilers can be one of these options. Moreover, there is no particular need to contact specialists, since anyone can do this heating device with your own hands. However, don't expect it to be easy. We'll have to stock up necessary materials and tools. Also, advice from other craftsmen who have experience in creating this kind of devices will not hurt here.

Particular attention should be paid proper installation induction heating boiler. Because otherwise you will create dangerous situation for yourself and people living in the house where this device is installed. In addition, mistakes when choosing a place for such a heating boiler will not allow you to demonstrate it maximum efficiency. Don’t be afraid that you won’t be able to make an induction heating boiler correctly the first time.

If you have any questions, do not be afraid to ask more experienced colleagues, because today the Internet is ready to help everyone. And there is no need to be afraid of this task, because the advantages inherent in this device will fully repay the time and money spent on its manufacture and installation. Moreover homemade induction boiler heating will help you save money during its operation.

Induction heating boilers appeared on sale recently and immediately competed with conventional electric boilers with heating elements. With similar sizes and power consumption, induction heaters are able to warm up the system much faster; in addition, they can work in systems with low quality coolant and require less maintenance. Using knowledge in electrical engineering and ingenuity, you can make an induction heating boiler with your own hands.

The operation of induction boilers and other heating devices of this type is based on the ability of conductive materials to heat up under the influence of eddy currents created as a result of electromagnetic induction.

The source of induction is high-frequency alternating current, passing through the primary winding of the heating device, made in the form of a coil. The heating element placed inside the coil plays the role of a secondary short-circuited winding. It undergoes transformation electromagnetic energy to thermal.

Eddy currents also occur when industrial frequency 50 Hz, but the efficiency of the heater will be low, and the operation of the device will be accompanied by strong hum and vibration. When the frequency increases to 10 kHz and above, the noise disappears, the vibration becomes imperceptible, and the heating increases.

Device

An industrial induction boiler consists of a core, the role of which is played by a heat exchanger, around which a toroidal winding is wound, connected to a high-frequency converter. When current passes through the winding, an alternating electromagnetic field is created, which results in eddy currents passing through the core.

The winding is connected to a high-frequency converter, in which a current of the required frequency is created by a signal from the control unit. Modern boilers have high level automation, allowing not only to create optimal mode heating the coolant, but also turn off the device in case of an emergency.

Inside the heat exchanger core there is a coolant. Under the influence of eddy currents it heats up to high temperatures. Due to the difference between the coolant temperature at the inlet and outlet, the coolant circulates through the system continuously from the boiler, even without connecting a pump. Therefore, induction boilers can be used in systems with forced and natural circulation.

The coolant can be either water or antifreeze, antifreeze, or oil. The quality of the liquid does not matter: the constant vibration of the system, imperceptible to humans, makes it impossible for scale and other impurities to settle on the walls of the thermal circuit.

Outer shell - metal case, equipped with a thermal and electrical insulation system.

Boiler shape it can be any, as well as the method of its installation: due to the absence of a tank inside the boiler, its dimensions are usually small and its weight does not exceed 50 kg.