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How to make an electric boiler from a pipe. Do-it-yourself electrode boiler: a step-by-step process for manufacturing and installing an electrode boiler for home heating. Installation and connection of equipment

For a private house it is very important to equip effective system heat supply. And for this you need a modern heating boiler. The unit can run on gas, solid fuel or electricity. But most often the owners suburban buildings opt for electric boilers. This is enough economical option. And besides, building an electric heating boiler with your own hands is not difficult. This article will tell you how to make an electric boiler for heating a house.

The boiler is essentially a metal tank with a thermal electric heating element. Making homemade is easy. The main thing is to have a certain level of knowledge, to have the right materials, tools and correctly draw up a diagram. The shape of a homemade boiler can be arbitrary. Most often use electric boilers 220 v. But sometimes more powerful units are installed. For example, an electric boiler heating 380 V will increase the heated area.

What are the advantages of a homemade electric boiler?

If there is a certain level of knowledge and necessary equipment and materials, a home-made electric heating boiler is a great option to save money. After all, the cost of such equipment cannot be called low. On average, a heating element electric boiler will cost at least $ 100. But if you do it yourself, the cost will be only $ 40.

The price of an electrode heater is at least $150. You can make it with your own hands for a penny. So that homemade unit either way it will be cheaper.

The functionality of a home-made electric boiler will not be inferior to devices made at production sites.

What do you need for a homemade electric boiler?

Before you make an electric heating boiler for your home with your own hands, you need to decide on the type of device (heating element or electrode), as well as prepare everything necessary tools and materials. But if there are doubts about the knowledge and capabilities, then it is better not to take the job. The slightest mistake can cause the device to be incapacitated or all the wiring in the house will be burned.

To create an electric boiler with your own hands, you will need the following tools and materials:

An algorithm for how to make an electric boiler for heating a home:

Boiler piping diagram

Before you connect the equipment, you need to heat the house. The main thing in this scheme is the presence of power supply. It is calculated depending on the proposed heat supply system (two or single-circuit) and the power of the boiler apparatus. I must say that the scheme for connecting an electric heating boiler is somewhat similar to the installation of gas appliances. But it has a number of differences.

It is important to remember some points that affect the quality and reliability of the heating equipment in order to avoid frequent breakdowns during operation.

I must say that the piping of an electric heating boiler is its connection to the heat supply system. For this, special elements are used. When piping, it is necessary to take into account the way the coolant circulates along the circuit. The electric boiler must be mounted at the lowest point of the structure. This is necessary in order to ensure maximum heating of all radiators. The discharge pipe must be located above the batteries at a minimum height.

To install the heating element, you just need to screw it on the thread. In order for the joint to be airtight, heat-resistant rubber gaskets should be used. The pressure gauge and thermometer are also quite easy to install. It is better to connect the heating element to the power network through a separate machine in the switchboard. Finally, the installation should be tested for faults. To do this, the heating circuit must be filled with water and the heater turned on.

Thus, having developed drawings for an electric heating boiler with your own hands, having prepared all the necessary tools and materials, you can easily make a reliable heating unit. As a result, effective heating of a private house will be obtained with minimal cost financial resources.

Build a heating boiler country houses, which are not connected to the central gas pipeline, it is quite possible even on their own. In this article, we will talk about how to make an electric heating boiler with your own hands. We will consider 3 available options for electric boilers - heating elements, electrode and induction.

What tools will be needed

To assemble homemade electric heating and to face it with a minimum of difficulties, you should have quality tools at your disposal.

For work you will need:

welding machine - it is most convenient to work with an inverter model;
cutter - if you do not know how to use a gas cutter, it is better to use a plasma cutter;
grinder - you will even need 2 models - a large one for a disk with a section of 230 mm and a small one for a disk with a section of 125 mm;
electric drill;
hammer;
core;
roulette and compasses.

Electric boiler on heating elements

The scheme of an electric boiler with a do-it-yourself shade is the simplest to execute and has been known for quite a long time.

The principle of operation of the heating element boiler

The device of all household appliances in which heating elements (heaters) are installed is the same. When the power is turned on, voltage is applied to the heating element, which gradually heats up and transfers thermal energy to the liquid located around it.

The advantages of such devices:

a wide range of heating elements of various shapes and capacities;
possibility of use in any heating system with liquid heat carriers;
insulation is installed on the boiler body, so that voltage is supplied exclusively to the heating element;
do not require complex maintenance;
the heating level is very easy to control, even with a minimal set of automatic controls.

Among the disadvantages of a home-made electric boiler of this type are:

"gluttony" in the consumption of electricity, since 1 kW of power is required to heat 10 m 2 of area;
impurities in the coolant accumulate on the heating element in the form of scale, so it needs to be cleaned about once a year;
The heating element can only function in the presence of liquid, it is recommended to install an idle speed sensor with it.

The order of assembly of the boiler with heating elements by their rivers

Before you make an electric boiler with your own hands, you should take care of having a reliable power line. Only equipment with a power of not more than 6 kW can be connected to ordinary networks with a voltage of 220 V and a frequency of 50 Hz. If a more powerful boiler is required, a three-phase wiring and a separate input must be made for it.

So, we begin assembling a home-made electric heating boiler from a pipe with a cross section of 159 mm with a wall thickness of 10 mm. This pipe will serve as the body of the boiler. For it, you will need either a factory-made hemisphere with a section of 159 mm and a thickness of 10 mm, or sheet metal with a thickness of 8 mm or more of a similar section.

The roof of the boiler, into which the heating elements will subsequently be embedded, can be made from a channel 8 mm thick.

We cut a coupling with a section of ¾ inch into the dome of the boiler. We will screw the drain valve into this coupling. In addition, you will need 2 pipes with a section of 1 inch for inflow and return. The thread on the nozzles can be done both internally and externally. It all depends on which one you prefer to work with.

To relieve excess pressure, it is necessary to prepare a branch pipe for the tie-in of the bypass channel. You will also need 3 adapters, into each of which a heating element for an electric boiler will be screwed. Another adapter will be needed for the temperature sensor. In addition, you will need holders for automation.

Please note that it is advisable to cut the threads on the pipes and adapters immediately.

Prepared threaded pipes, the same as on heating elements, must be immediately screwed into adapters. This is necessary so that the thread is not damaged during welding to the arch. To mark the places where the heating elements are inserted, the outer diameter of the pipe must be divided into 6 equal sectors according to the size of the radius. Then we draw three identical sectors strictly at an angle of 120 °.

The next step is to start cutting. Having finished with the markup, using a plasma cutter, we cut out holes for the nozzles for heating elements. They should be cut only along the outer contour. With all other nozzles, this does not matter in principle.

Let's start welding. We first intercept the pipes at several points so that they do not lead. Then we check the accuracy of the location, if necessary, lightly tap with a hammer, and then we perform a continuous seam. It is important that the adapters for heating elements in the electric boiler for heating with their own hands protrude 1 cm above the surface of the boiler roof.

We proceed to cutting the arch from the channel. In its center we make a hole for the air valve pipe, after which we weld the pipe itself. On the side we make a hole for the temperature sensor and also weld the pipe under it.

All protrusions, burrs and welding residues must be carefully cleaned with a grinder. The inner surface of the platform of the vault must be perfectly flat. The pipes for installing heating elements will only protrude from the outside by 1 cm.

We got a fairly powerful do-it-yourself electric boiler with 3 heating elements. If you need a simpler unit, according to the same principle, it can be assembled for 1 or 2 heating elements.

Assembling a heating boiler on electrodes

Devices of this type have been actively used only in the last 10-15 years. These are more technological devices, compared with heating elements.

Design

In electronic electric boilers, the liquid plays the role of a heating element. A self-assembled electric boiler of this type is a metal case, inside of which there is an insulated steel electrode.

0 is applied to the body, and phase is applied to the electrode. When the voltage is applied, the water ions begin to oscillate at a frequency of 50 hertz. In this case, the liquid gradually heats up. Due to this property, such boilers are also called ion boilers.

The dimensions of the electrode boilers are small. They can be made from a pipe with a cross section of up to 320 mm and a length of up to 60 cm. However, an electric boiler for heating a house with your own hands can be made much smaller.

Advantages:

small size, thanks to which the ion boiler can be placed even in a small apartment;
the absence of the so-called "dry run", which guarantees the boiler's serviceability, since it will not work without liquid inside;
resistance to voltage drops;
high heating and cooling rate, which means easy adjustment;
economy in electricity consumption in comparison with devices on heating elements.

Among the disadvantages of such boilers are the following points:

an important condition for the effective functioning of the electrode boiler is the level of thermal conductivity and the quality of the coolant;
the device must be properly grounded, as there is a high risk of injury electric shock;
it is important to exclude the possibility of air entering the system, otherwise the electrodes will become unusable due to corrosion.

Instructions for assembling a homemade electrode boiler

As a housing for an electric heating boiler with our own hands, we use a pipe with an internal section of about 50 mm and a length of 40 cm. In addition, you will need a solid rod with a diameter of 20 mm and a length of 30 cm, as well as two adapters with threaded internal threads. At the end of the rod, we drill a blind hole with a thread for a bolt Ø10 mm.

We prepare pipes. 1 we will weld at the end of the pipe, and the other at the side. In order for the side pipe to fit perfectly to the pipe, it is cut with a grinder, and then polished with a round file.

Cut holes for pipes. If there is no cutter, then many small holes can be drilled around the circumference. The work is brought to the ideal with a needle file and a round file. The hole for the side pipe must be located 10-15 mm from the edge of the pipe.

The next step is to weld the pipes to the pipe. So that they are not led, they first do spot welding in several places, and then - a continuous seam is applied.

We prepare the platform for the electric boiler. To do this, you can take a sheet of fiberglass 2 cm thick and cut a piece 120 × 120 mm with a hacksaw. Then in this platform it is necessary to drill one hole in the center, and four - around the perimeter. The cross section of the holes should be 10-12 mm.

Through the holes around the perimeter, the fasteners of the boiler body will be passed, and the central hole is designed to fix the steel electrode.

We proceed to fixing the body for the boiler on the platform. Four Ø12 mm nuts can be welded onto the housing on 4 sides to ensure a secure fit. Bolts Ø10 mm will easily pass through them.

Such nuts need to be welded with a slight indent from the platform. To ensure it, it is necessary to screw nuts of suitable size onto the bolts, thread them into wide nuts, and fix them again from below with smaller ones. Thus, it will be easier to perform welding work.

At the last stage, we perform final assembly boiler. To do this, cut rubber gasket section slightly larger than the outer diameter of the boiler. In its central part, we make a hole and pass the electrode through it. Then we install the case on the platform and fasten it.

Boilers of induction type

Among all the options for assembling heating with an electric boiler with your own hands, making an induction type model is the most innovative.

The principle of operation of an electric induction boiler

If you omit the details, then the work induction boiler is based on heating the coolant by means of a magnetic field.

Among the advantages of such units:

high efficiency;
safety;
the possibility of using any coolant;
lack of scale.

high cost of factory boilers;
the complexity of the structure of the automatic control unit. Without preparation, it will be difficult to assemble it.

Instructions for assembling a homemade induction boiler

It is worth noting that often the instruction on how to make an induction type electric boiler is so complicated and contains such laborious drawings that self assembly The hardware looks pretty dubious. However, we found a non-standard solution.

Before you make an electric boiler for heating yourself, you will need to purchase a 2.4 kW induction furnace and 3 meters of profiled pipes Ø25 × 50 mm with walls 2.5 mm thick.

If we consider how this design will work, then first we assemble a flat container from the profile - liquid will move along it. And then we fix the induction stove to the pipe and connect it to the network. Everything together will look something like a saucepan on the stove.

Pipe cutting must be done as accurately as possible. It will take several pieces of 400 mm each, carefully cleaned of burrs at the ends.

Since the liquid inside such a boiler will move like a snake, it is advisable to take an even number of pipe pieces so that the inlet and outlet are located on the same side - it is more convenient to connect them to the heating circuit.

Insofar as profile pipes not perfectly even, they must first be docked with blunt edges with sharp ones and numbered so as not to be confused later.

At the next stage, the joints between the pipes must be boiled. We lay the structure on a flat surface, tighten it with a clamp and weld it. First, we do spot welding so that the structure does not lead, and then we perform capital seams.

Now we need to close the end part of our container. For this we use a steel strip cut from profiled pipes. We perform welding in a similar way - first pointwise, and then capitally.

On the opposite side, we also weld the strip, not forgetting to install the inlet and return pipes on the outermost pipes. To ensure the maximum contact area of the container with the stove, all seams must be carefully cleaned.

So that our boiler can be hung on the wall, 2 corners must be welded on its back, into which the induction stove will be placed, as well as loops for hanging.

The last stage of work is painting. You can use heat resistant paint. On this assembly work completed. You can hang the boiler and connect it to heating and electricity.

At the time of buying induction furnace note that it is designed for continuous operation. Otherwise, you will need to restart the system every 2 hours.

Results

Each of the listed models is fully functional and reliable. Everyone will make their own choice in favor of any of them. The main thing is to carefully consider the work and, in case of difficulty, consult with knowledgeable people.

Heating in a private house should be efficient and, preferably, economical, right? To achieve such indicators, the home master needs a heating boiler. As you know, this device works either on solid fuel, or on gas, or on electricity. Usually happy owners of suburban real estate prefer the latter variety because of its cost-effectiveness. Experts say that it is not so difficult to assemble this unit on your own.

Do-it-yourself electric boiler

Electric boiler from A to Z
Step-by-step instruction

Electric boiler from A to Z

Before you figure out how to mount and put into operation an electric boiler for heating yourself, you should find out what this device is. In short, it is a metal container, inside of which an electric heating element is placed.

Note that the shape of the boiler can be any, at your discretion, and its power varies from 220 V to 380 V. The first type is more often used in residential premises, while a 380 V boiler can heat a large area - which means that it is advisable to put it as part of heating system in commercial real estate.

When it comes to a home-made boiler for heating, two types of such a unit are implied. An electric boiler can be a heating element or an electrode boiler. Please note that the functionality and quality of work of a home-made heater will not be inferior to factory counterparts.

You may have heard of induction electric boilers that heat the coolant using a magnetic field. It is not possible to make this type of heating device yourself.

Important: no matter what kind of electric boilers you decide to make at home, it is extremely important to take care of the availability of grounding. Otherwise, you and your household risk getting a serious electric shock. If you are not confident in your practical skills and level of training, it is better not to take on the manufacture of a heating boiler on your own. Any mistake during the assembly and installation of this unit is fraught with the fact that you will receive a faulty device and provoke a fire in the wiring.

Advantages and disadvantages of the device

There are no ideal devices. However, an electric boiler for a heating system still has a more impressive list of advantages than disadvantages.

Advantages of an electric heating boiler:

high efficiency (up to 97-98%). Such an electric boiler emits almost as much heat energy as it consumes electricity;
compactness. The size of the boiler allows it to be mounted even in rather small spaces, because the length of the water heating circuit is about 60 cm with a width of 30 cm - these are more than compact dimensions;
high rate of water heating;
immunity to voltage drops in the network. This factor is important given that the current supply in the power grid is often unstable. The device does not suffer from power surges, but only changes the intensity of work;
competitive cost. A store-bought electrode heater will cost you $ 150, no less, and you can make it yourself using scrap materials - such a device will cost much less.

Cons of an electric heater:

the need to remove hydrolysis gases that are formed during the operation of the device;
mandatory grounding;
selective compatibility with other components of the heating system. Electrode boilers do not work with cast iron batteries and metal-plastic pipes;
high cost of heating. Due to the impressive tariffs for electricity, the heating of a large two-story house with the help of an electric boiler, it may require decent financial injections from its owner.

I would like to draw your attention to one important nuance. The electric boiler is insensitive to voltage drops in the network, but this device needs high-quality, reliable wiring. If you live in a region where power outages occur quite often, then you need to take care of purchasing an uninterruptible power supply (uninterruptible power supply). Its task is to accumulate electricity in case of an unexpected shutdown of the system. Thanks to this small but necessary device, the electric boiler will be able to work for several more hours even without light.

Tools and Consumables

Let's assume that you have already decided on the type of device you want to manufacture, having opted for a heating element or electrode heating boiler. Now you need to prepare everything that you will need for work. Surely you will find some of the following in your workshop, some tools will have to be bought or borrowed.

Tools and parts for the manufacture of an electric boiler:

welding equipment (inventory type);
Bulgarian;
hammer;
tape measure, marker, chalk;
steel pipe (its thickness must be at least 3 mm and diameter - 219 mm);
electrode;
electrical wires (ideally copper);
metal pipes;
FUM tape.

Step-by-step instruction

The workplace is prepared, all the tools and parts are at hand, which means that you can start creating an electrode boiler for your home heating system.

Prepare a piece of steel pipe. To do this, it is necessary to cut a thread from its two ends. One end of the tube will need to be plugged, and the sleeve with the electrode must be screwed into the other.
To weld metal threaded pipes to the pipe, which will be used as fasteners with thermal communications of the entire system, round holes should be drilled in it.
Two bolts need to be welded to the body - one of them will be used for neutral wire and the other for grounding.
To mount the resulting device in the heating system, pipes must be connected to the prepared pipes.
The next step is to connect the positive wire terminal to the electrode.
Connect the neutral cable terminal and the ground wire to the welded bolts.
It is important to connect a pressure gauge and a fuse system to the heating circuit. Do not forget about the device responsible for the removal of hydrolysis gases.
The electric boiler, made by hand, is ready to start. The system must be filled with prepared coolant and run.

No wonder they say: they say, it is better to see once than hear a hundred times. Let's rephrase it popular expression and note that a video tutorial on assembling and installing an electric boiler with your own hands will help you better understand the intricacies of this process. We invite you to get acquainted with the video prepared by experienced electricians.

Safety Compliance

To begin with, before assembling and connecting an electric boiler, you will need to obtain permission from the electricity supplier. This is necessary so that you understand whether your boiler will have enough electricity and whether it will work to the detriment of other network subscribers.

In principle, it is better to entrust the installation of this unit to specialized craftsmen, but if you managed to assemble the electrode boiler yourself, then you should cope with its connection without any problems.

Connecting an electric boiler to a heat supply system is called the term "piping". In order to connect your home-made boiler, you need to familiarize yourself with the heating scheme of a house or apartment, paying attention to power access points. The connection diagram takes into account the type of heat supply system - single-circuit or double-circuit - as well as the power of the boiler itself.

We invite you to watch a video on the installation and launch of the electric boiler.

Experienced craftsmen advise paying attention to the following features of installing an electric boiler:

before installing it, the heating system must be thoroughly rinsed with water with the addition of special cleaning agents;
make sure that a safety valve and an air vent are provided in the heating system;
a piece of pipe connecting the electric boiler with the heating system must be metal;
air temperature during installation of the boiler can vary from +10 to +40 degrees, humidity - no more than 75%;
if you live in two-storey cottage, then one boiler will not be enough for you. It is necessary to connect two electric boilers - one for each group of radiators.

When choosing a place where your home-made boiler will be connected, it is important to consider the method of circulation along the coolant circuit. There are only two options here:

if natural circulation of the liquid is expected, then the device must be installed at the bottom of the system. This will ensure maximum heating efficiency of the radiators. In this case, the injection pipe should be placed above the batteries at the lowest height;
if you assume forced pumping of the coolant through the system, then the electric boiler can be mounted in any part of it.

Important: when manufacturing, installing and launching an electrode heating boiler, you must adhere to safety regulations. We are talking about electricity and liquid (coolant), which means that any oversight can lead to irreparable consequences.

Users of electric boilers claim that this type heating appliances usually does not cause complaints during operation, if you follow the safety rules.

Summing up, we note that it is quite possible for a non-specialist to assemble an electric boiler for a home heating system. In order for the process to go without unpleasant surprises, and for the result to please you, it is important to follow the instructions clearly, make sure that you have all the necessary equipment at hand. Of course, elementary skills in working with electrical engineering are also necessary.published

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Considering the fact that an electric boiler is mainly installed not as a main, but as an additional heater for heating, it would be quite reasonable to make an electric boiler for heating a house with your own hands. The design of such units is quite simple, but the functionality is in no way inferior to serial models of leading manufacturers. heating equipment. In this article we will tell you how to make an electric boiler yourself at home. Let's imagine a step-by-step algorithm, following which you can make a working and reliable electric boiler for heating your home with your own hands.

Why make a homemade electric boiler for heating

A homemade electric boiler can be of any shape.

Why not? If the hands are in place and there is an irresistible desire to use them in the right direction, then why not make a home-made electric boiler for heating with your own hands instead of buying it? As you know, the price, even the most affordable heating element heater is quite high. For example, a more or less normal heating element boiler costs from $100. If you make it yourself, then the price will be no more than $ 40, while there are no particular difficulties. And the electrode heater, which costs about $ 150, can be made by yourself for a penny, using what is at hand.

So, we can make two options for a self-made electric boiler for heating:

heating element;
electrode.

At the same time, their functionality will be in no way inferior to units manufactured on production areas. There is another type of boilers that heat the coolant with a magnetic field. This induction heaters. Making a full-fledged induction electric heating boiler with your own hands will not work, that's for sure, but you can still use the principle of induction to heat the coolant.

If you are not sure that you can make an electric heating boiler with your own hands, then it is better not to take it. Making mistakes is fraught not only with the fact that as a result you will get an incapacitated unit, but also risk burning all the wiring in the house.

Another crucial moment, which applies to absolutely all electric boilers - this is the presence of grounding without fail. Do not forget about this in any case if you have already decided to make the heating of a private house with an electric boiler with your own hands, otherwise you risk getting a current discharge of such strength that it will not seem enough.

Do-it-yourself tenovy electric boiler for home heating

A tenovy electric boiler for heating with your own hands can be made from a tank of any shape. In such a unit, heating elements heat the water. They will need to be bought in the quantity that is necessary in your particular situation. we have already told. Usually they put two or three heaters. The cost of one ten is 10 dollars. They are already equipped with a thermal head with an external thread, with which they will be screwed into the tank body.

Diagram of a self-made electric boiler.

Consider how to make a homemade electric heating boiler on heating elements from a pipe. This will require:

steel pipe with a diameter of 150 mm;
two round plates with a diameter of 150 mm;
three nozzles with a diameter not less than the section of the pipes of the circuit (from 25 mm);
heaters;
nuts;
automatic air vent;
ball valve.

To make an electric heating boiler for your home with your own hands, you need to choose the right size. The length of the pipe, which will be the body of our heater, must exceed the length of the heating elements with a good margin. The ends on both sides are welded with plugs. V side part branch pipes are welded in the amount of two pieces for supply and return of the coolant. Now you need to decide how the heaters will be located after. Naturally, they will be in a vertical position, the only question is which side they will be screwed into. There are two options:

bottom;
above.

If the heating elements are screwed in from below, then during operation, in order to replace the burned-out heating element, it will be necessary to drain the water from the boiler, and then, accordingly, . But such an arrangement ensures that the heating elements will be completely immersed in the coolant. Such home-made electric boilers for heating a private house are more reliable. As you know, if part of the heating element is not in the water, then the tungsten coil will burn out.

If you place the heating elements in a home-made electric boiler for heating the house in such a way that they are screwed in from above, then after replacing the burned-out heating element, you will not need to add water to the system. But this arrangement has its drawback, since air will accumulate in the upper part of the boiler.

Due to the formed air pockets, the heaters will overheat and burn out. Therefore, to remove air to the outside, an additional automatic air vent must be installed in the upper part. In this case, the air problem will be solved.

Choose for yourself how it is more convenient for you to make electric heating boilers with your own hands, both options are correct. So that the heating elements can be screwed into the body, you need to cut holes of the desired diameter and weld nuts on them. The inner thread of the nuts must match the outer thread of the heaters. Additionally, a pipe for draining the coolant is welded in the lower end. After that, threads are cut on all three pipes (supply, return, drain). A ball valve is screwed onto the drain pipe.

That's all, the manufacture of a homemade boiler is finished. It remains only to install it on the heating circuit and connect it to the network. Before you make heating with an electric boiler, you need to consider what voltage is in the network of your house (220 or 380 volts). The connection scheme of the heating elements depends on this. You also need to resolve the issue with the boiler control unit. The minimum that is required is thermostats that will take the temperature of the coolant. Based on the thermostat data, the control unit will turn the boiler on or off. If desired, you can add certain options, depending on the situation. How to make a heating electric heating boiler with your own hands, video:

Do-it-yourself electrode electric heating boiler

An electrode boiler heats water by moving ions between positively and negatively charged electrodes. Details about we wrote earlier.

In a homemade electrode boiler, the anode must be isolated from the cathode.

A homemade electric boiler will cost quite inexpensively, depending on what you have available. The issue price will be low, even if you have to buy absolutely everything. For work you will need:

pipe with a diameter of 50 mm;
metal bar with a section of 20 mm;
two couplings with internal thread;
flat flange;
any dielectric material;
rubber for sealing;
nuts, bolts.

So let's get started. How to make an electric heating boiler with your own hands? We take a tube and weld a coupling into one end. We place the second coupling in the side part closer to the opposite end, on which the flange is welded. Then we drill a hole in a metal twig and cut a thread in it. A bolt will be screwed into this hole, with which the buted electrode is attached to the dielectric. A dielectric is a material that does not conduct electricity. It is necessary to isolate the electrode from the body, otherwise a short circuit will occur.

As a dielectric, you can use a thick heat-resistant plastic, for example, such as textolite.

To keep everything neat, we cut out a circle from the textolite the size of the existing flange. Then holes are drilled in the dielectric for attaching to the flange and one hole in the middle for attaching the electrode. The bar is screwed on before the unit is assembled. Between the textolite and the flange, you need to put a rubber gasket to seal the joint and tighten everything with bolts and nuts.

For convenience, two bolts must be welded onto the body, to which zero will be applied and grounding will be attached. The earth must be. We connect the phase (plus) to the bolt that secures the electrode. All wires must be insulated. Before connecting the boiler, it is necessary to carry out salt preparation of the coolant. Also, you can not do without an elementary control unit with a temperature sensor. Do-it-yourself electrode electric boiler for heating, video:

Homemade induction heating boiler

It remains to consider induction heating with an electric boiler. How to make an induction boiler if you are not an electrical physicist? It will be difficult, because you need to assemble not only the design of the device itself, but also the electronic circuit, which is already much more difficult. Without deep knowledge in physics and skills in working with electrical diagrams not enough. And it's not worth it, because there are several more simple ways make an electric boiler with your own hands, which we discussed above.

The manufacture of an induction boiler can only be justified if you already have an induction heating element. In this capacity, an induction hob is ideal. The point is as simple as two and two. You need to make any tank that will act as a heat exchanger, and put it on an induction hob. Or, in some other way, ensure the contact of the plate with the heat exchanger in a vertical or horizontal position. Turn on the stove, it heats the tank, and that, in turn, gives off heat to the water. Install the temperature sensor on the coolant, which will turn the hob on and off.

In summer, when the heating is not working, the hob can be used for its intended purpose - to cook food on it. It is easy to carry from place to place, so it is convenient to use this method of heating the coolant in the country. If you have a car, then you can take the induction hob with you even during the heating season, because cases of theft in summer cottages are not uncommon. In addition, antifreeze can be safely used in such a circuit.

V last years among the population, the installation of electrical equipment for space heating is popular. This is due to saving money on natural energy resources. But the installation of such equipment requires significant material investments, so many home craftsmen are interested in how to make an electric boiler with their own hands.

Such an electric boiler can be made by yourself

Reasons for the popularity of electric boilers

Electric boilers do not have mechanical elements, making them much easier to use. In addition, the likelihood of a breakdown is reduced several times.

The electric boilers are equipped with an automatic temperature control system. This contributes to its shutdown at the slightest change in ambient temperature. If necessary, the boiler will either increase the temperature or decrease it.

The device operates safely without producing carbon monoxide and others harmful substances, so it can be installed to heat any premises, including children's and bedrooms. In addition, the installation of equipment does not need to obtain appropriate permits from regulatory authorities.

In this video you will learn how to make an electric boiler:

Such boilers can be used as additional equipment for space heating or made the main source of heat in the house. The device is powered by 220 V, and usually weighs about 20 kg. Even with such small dimensions, it can heat up to 400 cubic meters of air.

Many electric boilers are characterized by good efficiency. For example, to heat 30 cubic meters of air, it is necessary to spend 4 kW of electricity per day. The use of such devices allows you to heat a room much larger than it could be done with other types of heating equipment.

Design and principle of operation

Electric boilers have quite simple design. All devices are equipped with a heating element and a container for a heat conductor. According to the type of heating element, electric boilers are divided into:

devices with heating elements (tubular heaters);
induction boilers;
devices with electrode heaters.

Electric boilers are classified into 3 types

Any installation on electricity must necessarily have a thermostat for temperature control and two nozzles (for supplying and discharging coolant).

The coolant can move through the system forcibly by installing additional equipment (pumps). Also, elementary laws of physics and the force of earth's gravity can be used for this purpose. With automatic circulation, the pump is installed at the return inlet.

Device with thermal electric heater

Such devices are considered the most popular due to their simple design and low cost. The heating element (heating element) is installed in a container, where the heat conductor is heated to the desired temperature. When current passes through the heating element spiral, it heats up to a high temperature, due to which the liquid is heated.

The heating element is protected from overheating, as water constantly circulates and cools it. To maintain a constant temperature level of the heat conductor, a thermostat is installed that turns off the heating element in case the set temperature is exceeded. The device turns on again when the indicators are reduced to the minimum.

It is not difficult to make an electric boiler for heating with your own hands, if you compare its manufacture with other types of heating equipment. It will not have the advantages of purchased analogues, but nevertheless it will perform the function assigned to it.

For self-manufacturing the device will only need heating tubular elements and a container. But such a boiler should not be considered ideal, since its efficiency will be below 80%. Much also depends on the quality of the heating elements, on which scale is formed due to salts dissolved in water. Often it leads to equipment failure due to overheating. As practice shows, scale with a layer of 1 mm reduces the efficiency by 10-15%. But even with this in mind, electric designs for space heating are very popular.

The efficiency of such a device will be far from 100%

Induction devices

Such devices, unlike heating elements, have an efficiency close to 100%. In addition, they are durable. Their service life is about 25-35 years, while in addition they can perform the function of a boiler, heating water. Thanks to almost lossless energy conversion, induction type boilers have the highest energy efficiency.

Nevertheless, this type of equipment has not become popular with home craftsmen, since it is very difficult to make an induction home-made electric boiler for heating a house. This is due to the need to use electronic voltage converters.

The design of such a device consists of a coil(inductor), which is mounted on a metal core. The latter is a coil of pipes through which the coolant moves.

An induction boiler differs from heating elements in that the area of \u200b\u200bcontact of water or antifreeze with a heating element is several times higher. Therefore, the efficiency of induction units is 99-100%. Scale in them is formed several times less, since microvibrations are created that prevent such a process. Electric boilers also have protection against overheating of the electrical element, since the water is constantly circulating.

Electrode unit

The electrode-based design is somewhat reminiscent of an “army” boiler. It consists of two blades, between which there is a gap of 1-2 mm. Water with dissolved salt is used as a heat carrier.

The electrode boiler includes a segment metal pipe. Inside there is an electrode, which is closed with bushings. Must be good grounding with a pipe that is connected to the boiler body.

This boiler has a simple design.

When preparing a heat conductor, it is necessary to correctly calculate the amount of salt, since the current strength in the circuit, that is, the power of the device, will depend on this indicator. A thermostat is used to adjust the temperature. Also, the device is equipped with an automatic shutdown system.

Advantages and disadvantages

Though different types electric boilers differ in design and principle of operation, they have a number of common advantages and disadvantages. The advantages of electric boilers over fuel boilers are as follows:

simplicity of design;
high level of security;
do not need to install a chimney;
high efficiency;
electricity is one of the most affordable and environmentally friendly pure species energy;
a separate room for the boiler does not need to be provided, and the installation can be done in any room of the house;
much less materials will be required for production;
long service life;
electric boilers are silent and automated.

If we talk about the shortcomings of electric boilers, then today only one can be indicated. Not taking into account the fact that electricity is an affordable and ecological form of energy, it is not the most expensive source of heat. Although, on the other hand, if electric boilers are used as additional equipment, then this option will be economically feasible.

A practical guide to DIY

Before installing the equipment, it is necessary to carefully prepare: make or order drawings and diagrams, make the necessary calculations, choose a place for installation, stock up on materials and tools.

Although ready-made drawings can theoretically be used, in most cases they will have to be redone, since each home master will use the materials that he has.

Production of a boiler based on heating element

It is better to make an electric boiler for heating a house with your own hands based on the technology of a tubular electric heater. This is due to the simplicity of the design. Even a person without relevant experience can do it. Such a device is allowed to be used for heating both large and small rooms. It can be installed in a garage, bath or small room. In addition, it will require voltage from a conventional network for its operation.

You can make an electric heating boiler with your own hands for 220 V from steel pipes for the body and nozzles, metal sheets and several heating elements. If you plan to install one heating element, then a pipe with a diameter of 10 cm is enough, and if two or more, then 13-15 cm. The body should be at least half a meter longer than the heating element.

In a design consisting of several heating elements, each of them must be connected to a separate machine. If the house has not one, but three phases, then you need to install each element on a separate phase.

Necessary tools and materials

For a boiler with a power of 2.4 kW, you need a few materials. It will provide heat to the house as an additional equipment. For work it is necessary to prepare:

A steel pipe with a diameter of 120 mm and a length of 65 cm.
Sheets of steel 4 mm thick and 1.5 × 1.5 m in size.
Two heating elements of 1.2 kW.
Thermostat.
Safety valves.

All materials can be purchased in specialized stores. If you install a purchased boiler, then the components must be included with it. Some elements can be made independently from improvised means, but you need to buy a thermostat anyway. You also need to prepare a number of tools:

Grinding machine.
Welding machine.
Drill and a set of drills.
Ruler and marker.
A set of screwdrivers and keys.

In addition, an anti-corrosion agent, primer and paint will be required to give the boiler a beautiful look.

Step-by-step instruction

A boiler for a private house can be made independently using the production instructions. All actions must be performed in the following sequence:

Heat exchanger production. To do this, it is necessary to burn a hole of 1 inch in a pipe with a diameter of 120 mm. make it better gas burner, in extreme cases - an electrode.
The hole made is cleaned with a grinder. Next to the hole you need to weld stacks.
For the bottom of the boiler use metal plate 5 mm thick. It will close the device from below and serve as a flange for the heating element.
At the very bottom of the pipe, stacks are welded in, which drain excess water from the system.
A stud must be welded to the boiler body. It will be connected to earth.
The upper part is closed with a round plate with a diameter of 120 mm.
The tightness of the structure can be checked by lowering it into water. Previously, all pipes are closed with polypropylene.
Next, you need to install a thermostat and a tap, and then connect the device to the water supply system.
At the final stage, heating elements turn on and test the operation of the system.

This design has its drawbacks. The main one is the impossibility of replacing the heating element. To do this, cut off the top cover and dismantle the structure. To avoid such consequences, it is necessary to install removable heating elements like those installed in boilers.

To protect against corrosion, the boiler is treated with a special substance. After that, it must be primed and painted. But it is better to do these actions separately for each element before installing the boiler.

A self-assembled heating installation, although it has a number of disadvantages, is economical and easy to use, making it popular among users. However, one should not forget about extreme caution during installation and operation, since electricity requires special attention. After starting the equipment, it is necessary to control the process of its operation and carry out preventive maintenance in time.