Induction heating boiler: reviews. Induction heating boiler with own hands

The process of heating housing is one of the most important for any person. When building a house, overhauling, updating the pipeline, it is very important to determine exactly the source of heating. If the landlord lives in a gasified area, then there will not be too many questions with the choice of a heating boiler. A gas appliance is the optimal solution, available at a quality level and cost.

It will be more difficult for those people whose housing construction is located in places remote from gas supply lines, and the purchase of cylinders occurs with interruptions. In this situation it is logical to pay attention to the electric induction heating boiler. Feedback from users and the opinions of independent experts will provide us an invaluable service in the study and selection of the device.

The first acquaintance with the heat generator

Based on the name of the boiler, it becomes clear that the basis of his work laid the principle of electromagnetic induction. What is its essence? Let's try to pass current through a coil of thick wire. A strong electromagnetic field immediately forms around the device. If you place a ferromagnet (attracting metal) inside, it will heat up very quickly.

The simplest induction heating boiler is a wire coil with a dielectric tube, inside of which is a steel rod. Having fed the device from the mains, we will get the core heated. It remains only to connect the received coil to the heat main and get a primitive heating system.

In other words, the electric energy produces an electromagnetic field, the waves of which heat the metal base. And from it a high temperature is transferred to the heat carrier (water or antifreeze). Intensive heating of the liquid creates convection currents. Their capacity is sufficient for the productive work of a small heating circuit. In systems with a long pipeline length, it is recommended to install a circulation pump.

Internal device

Structurally induction electric heating boiler is a transformer, enclosed in a welded metal shell. Under the casing is a heat-insulating layer. The coil is located in a separate compartment, hermetically sealed from the working space. This arrangement is safe, because it completely eliminates contact with the coolant. The core consists of thin steel tubes with a toroidal winding.

Please note that the heating boiler made of induction tiles has no heating elements, which is fundamentally different from traditional heat generators equipped with electric heaters. Its design features ensure the uninterrupted high-efficiency operation of the heating system for a very long period of time.

Long-term operation of the heating system is provided by a structural feature, which differs induction heating boiler. Feedback from users suggests that these units work equally effectively at any current frequency. That is, the devices can be powered not only from the household electrical network, but also from high-frequency converters. Built-in sensors are able to react to voltage fluctuations and monitor heating performance.

Induction heating boilers: reviews and complaints

Insufficient information about the device and the principles of the action of heat generators creates a lot of questions. Applying for advice in a specialized store, you can sometimes hear only the positive characteristics that induction heating boilers award. Reviews of trade managers are often characterized by cunning, because in the world there are no ideal devices.

Deliberately forgetting about existing shortcomings, sellers can mislead potential buyers. To objectively understand the situation, let us consider the most frequently encountered statements.

Main theses

Innovation of development

In fact, electromagnetic induction as a physical phenomenon was discovered by the scientist Michael Faraday in the 19th century. A furnace based on induction cookers has long been used for steelmaking. That is, no new technologies were invented, and modern boilers are working on a long-known discovery.

Advantageous acquisition

We are assured that up to 30% of electric power can save an induction heating boiler. Comments of authoritative experts express incomplete agreement with this thesis.

First, any heating device converts all incoming electrical energy into thermal energy. In this case, the efficiency is not necessarily high, because the dispersion of heated air flows can occur unevenly.

Secondly, the heating water heating rate depends on the efficient operation of the heating device. However much we like, the facts confirm the large amount of electricity that the induction heating boiler consumes. The comments of any person who is a bit familiar with the laws of physics, agree with the obvious fact: to receive one kilowatt of heat you need to spend the same amount of electricity.

Thirdly, some of the heat produced is wasted. For the sake of justice, it should be noted that she still remains in the house, and not flies into the pipe.

Thus, the high efficiency of the device can be considered somewhat relative.

Durability

We are assured that induction boilers for heating the house are capable of uninterrupted work for thirty to forty years. And that the reliability of the devices is much higher than other types of electric boilers. Let us analyze this statement in more detail.

First, induction devices are not capable of mechanical wear. They do not have moving parts, so there's simply nothing to break.

Secondly, the copper coil winding can last for a long time. Even damage to the insulation will not harm its operation.

Thirdly, despite the sufficient thickness (about 7 mm) and the strength of the main material, the steel core, all the same, is gradually destroyed. The constant change of heating by cooling significantly affects the strength of the rod. But the negative process is too long in time, so it can take a year to completely break down the core.

Fourth, the duration and reliability of the heating device is affected by the quality of the transistors. It depends on them how long the induction boilers of heating will perform flawlessly. The testimonials of grateful owners confirm the fact of a ten-year guarantee. In practice, there are cases when heat generators have worked without failures for more than thirty years.

The listed arguments unanimously recognize the actual durability of induction boilers. This advantage is particularly convincing against the background of heating furnaces with electric heaters, in which the replacement of internal parts within several years of operation is required. It is not uncommon for heating elements to not even produce their own resources.

Constant working parameters

Furnaces that have heating elements in the base, gradually lose power due to the formation of scale on TENs. In this regard, the induction boilers of heating differ significantly: the technical characteristics here remain unchanged for many years. Let's try to figure out if this statement is true.

A great influence of scale on the reduction in power in boilers with TES is somewhat exaggerated. The fact is that the calcareous deposit does not have a high level of thermal insulation. In addition, the formation of a large layer of scale is impossible in a closed water heating ring.

In the induction devices, the formation of layers is completely eliminated. Even if the core is in contact with the liquid coolant, it will still not form a calcareous coating. Deposits simply physically can not be held on the surface of the rod because of its constant vibration under the influence of the electromagnetic field. In addition, on a hot core, water bubbles are constantly formed, which destructively affect any scale.

Thus, the statement about the unchanged technical characteristics in induction devices is quite true. As for TEN boilers, the thesis here is not entirely truthful.

Silent work

Trading agents rush to assure us that the induction devices do not make any sounds when turning on. Is this really so?

In any electric heating devices there are no sound vibrations. Insignificant noise level can create additional devices - circulation pumps. The modern market offers a large selection of enforcement devices, among which you can find absolutely noiseless. So, the assertions of sellers can be considered fair.

Compactness

A small piece of pipe with coiled wire - just like the induction heating boiler looks like. The feedback from the owners of the heater confirms the possibility of placing the device in any premises.

Security

To claim that the heat generator is absolutely safe is not worth it. In case of leakage of the coolant, the heating of the core will still continue. If you do not turn off the device, it will melt very quickly. In order to exclude such situations, it is necessary to take care of an additional device during installation, which automatically turns off the system in case of unforeseen circumstances. It is obvious that the safety of all electric boilers is at the same level.

Can I make an induction heating boiler by myself

The need to obtain inexpensive and efficient heating of the house with minimal expenses for the construction of the heating system, encourages many consumers to think about independently manufacturing equipment. Having familiarized yourself with the working and constructive principles of the device, it is possible to assemble a self-made induction heating boiler. The main assistant in the case will be a schematic image of the heating strap, which you need to constantly keep near you, checking and specifying the installation.

For home, you do not need a high-power device. So, for heating a room of 100 square meters, it is enough to make a boiler for 10 kW. He is able to provide a room temperature of 20 degrees. To the self-made boiler it is possible to purchase the electronic programmer of operating modes. With it, you can plan the work of the induction unit for a week ahead. It is also possible to control the temperature regime from a distance.

Where to begin

Getting to work, you need to prepare the necessary materials and suitable tools. For convenience of manufacture it is desirable to prepare the device for welding of inverter type. With its help, joints in the generator housing and connection of pipelines will occur. Also in the heating circuit device you need a high-frequency converter (inverter).

Materials may require:

• Pieces of stainless steel wire or rod with a length of 50 mm and a diameter of about 7 mm - material for heating in a magnetic field;
• A section of a plastic thick-walled pipe with an internal diameter of up to 50 mm is the basis for the boiler body;
• Copper enameled wire - the main element of heating;
• Adapters - connecting fasteners;
• Metal grid - the barrier between the coil and the walls of the shell.

Having prepared everything we need, we begin to make an induction heating boiler with our own hands.

Simple circuit installation

1. At the bottom of the plastic pipe lay a metal mesh.
2. All the space of the body is filled with steel pieces and covered with a piece of mesh from above.
3. On a plastic pipe to evenly coil the copper wire. A total of 90 to 100 turns should be obtained with the same distance between them.
4. The resulting inductor should be installed in the heating circuit using adapters. To do this, remove a part of the pipe from the common system and place the coil in the resulting incision. The first adapter is soldered to the case.
5. The end of the copper wire is connected to the high-frequency inverter.
6. Fill the system with water and start it.

To increase the safety of the homemade heat generator, it is desirable to insulate the open parts of the coil. Choosing the material to protect the copper wire, you need to take into account its electrical and thermal conductivity.

The considered scheme of an induction boiler, made by hand, costs the manufacturer inexpensively and is capable of significantly increasing the rate of heating of water in the heating system. The shortcomings include a small size of equipment and a nondescript appearance.

The second variant of boiler installation

You can try to make a heater of increased power. Its device will cost a little more than the first option, but afterwards all the expenses will be fully paid off by excellent quality and high efficiency.

The construction of the complicated model is a welded joint of two pipes, outwardly resembling a bagel. The resulting part will simultaneously serve as a core and a heating element. Copper winding directly on the boiler body provides a high level of performance while maintaining compactness and low weight of the device. Supply and discharge nozzles are welded directly to the inductor. Thus, the heating of the water will occur as a result of the contact of the coolant with the copper winding.

Features that need to be taken into account when installing the boiler.

• Such an induction device can only be integrated into a closed heating circuit operating on forced circulation of the coolant.
• Only plastic materials should be used in the pipeline system.
• The induction device should be placed indoors so that the distance from it to the nearest walls and objects is not less than 300 mm. From the floor and ceiling the boiler must be removed by 800-1000mm.

The laborious process of installing an induction circuit will eventually result in a qualitative warm-up of the house. Homemade heating device will last you at least two decades, without bringing any worries.

Induction boiler SAV - a well-known brand of industrial devices

One of the varieties of factory instruments can be considered induction heating boiler SAV. The furnace is a pipeline system with an integrated inductor. The manufacturer of heat generators is Volgograd research company Velebit.

SAV thermal generators are successfully used in several types of systems:

• Autonomous heating;
• Combined scheme;
• Backup heating;
• hot water supply;
• Maintenance of the given temperature mode of the technological processes involved in flow and chamber reactors.

It is noteworthy that the induction heating boiler SAV shows a high efficiency in automated heat supply systems controlled remotely. The industrial production of electric installations of three classes with power ranges: 2,5-10 kW, 15-60 kW, 100-150 kW is adjusted.

Heat generators of type VIN

Vortex induction heating boiler (VIN) is intended for heating and hot water supply of private houses, cottages and commercial and public facilities. Depending on the size of the output, heaters of two types are produced: single-phase and three-phase. More powerful models can be successfully used in the devices of the heating system of industrial enterprises.

Let's sum up the results

Induction heating boilers in Ukraine began to be used in industrial enterprises in the late eighties of the last century. The development of household options began around the middle of the nineties. Over the past decades, electric heaters have changed many times, modernizing and improving.

To date, induction devices are worthy of competition gas and TEN boilers. The trading network offers a variety of models that differ in technical parameters and cost. The price of household appliances starts from 25 thousand rubles. Industrial boilers are much more expensive - more than 100 thousand. Making a thermo-generating device with your own hands will allow you to significantly reduce the cost of arranging home heating.