Used engine oil stove: design options + DIY example

Types of homemade stoves in development

Engine oil contaminated with impurities does not itself ignite. Therefore, the principle of operation of any oil potbelly stove is based on the thermal decomposition of fuel - pyrolysis. Simply put, to obtain heat, mining must be heated, evaporated and burned in the furnace furnace, supplying excess air. There are 3 types of devices where this principle is implemented in various ways:

1. The simplest and most popular design of direct combustion with afterburning of oil vapors in an open-type perforated pipe (the so-called miracle stove).
2. Waste oil drip furnace with closed afterburner;
3. Babington burner. How it works and how to make it yourself is described in detail in our other publication.

The efficiency of heating stoves is low and amounts to a maximum of 70%. Note that the heating costs indicated at the beginning of the article are calculated based on factory heat generators with an efficiency of 85% (for a complete picture and comparison of oil with firewood, you can go here). Accordingly, fuel consumption in home-made heaters is much higher - from 0.8 to 1.5 liters per hour versus 0.7 liters for diesel boilers per 100 m² of area. Consider this fact, taking up the manufacture of the furnace for testing.

The device and disadvantages of an open-type potbelly stove

The pyrolysis stove shown in the photo is a cylindrical or square container, a quarter filled with used oil or diesel fuel and equipped with an air damper. A pipe with holes is welded on top, through which secondary air is sucked in due to the chimney draft. Even higher is the afterburning chamber with a baffle to remove the heat of combustion products.

The principle of operation is as follows: the fuel must be ignited using a flammable liquid, after which the evaporation of mining and its primary combustion will begin, causing pyrolysis. Combustible gases, getting into a perforated pipe, flare up from contact with an oxygen stream and are completely burned. The intensity of the flame in the firebox is regulated by an air damper.

This mining stove has only two advantages: simplicity with low cost and independence from electricity. The rest are solid cons:

• stable natural draft is required for operation, without it the unit begins to smoke into the room and fade;
• water or antifreeze that gets into the oil causes mini-explosions in the firebox, which causes fire drops from the afterburner to splash in all directions and the owner has to put out the fire;
• high fuel consumption - up to 2 l / h with poor heat transfer (the lion's share of energy flies into the pipe);
• one-piece housing is difficult to clean from soot.

Although outwardly the potbelly stoves differ, but they operate according to the same principle, in the right photo, fuel vapors burn out inside a wood-burning stove

Some of these shortcomings can be leveled with the help of successful technical solutions, which will be discussed below. During operation, fire safety rules should be followed and used oil should be prepared - defended and filtered.

Pros and cons of a dropper

The cardinal difference of this furnace is as follows:

• the perforated pipe is placed inside a steel case from a gas cylinder or pipe;
• fuel enters the combustion zone in the form of droplets falling to the bottom of the bowl located under the afterburner;
• To increase efficiency, the unit is equipped with forced air by means of a fan, as shown in the diagram.

Scheme of a dropper with a bottom supply of fuel from a fuel tank by gravity

The real disadvantage of a drip stove is the difficulty for a beginner. The fact is that you cannot rely entirely on other people's drawings and calculations, the heater must be manufactured and adjusted to suit your operating conditions and properly organize the fuel supply. That is, it will require repeated improvements.

The flame heats up the body of the heating unit in one zone around the burner

The second negative point is typical for supercharged stoves. In them, a jet of flame constantly hits one place of the body, which is why the latter will burn out pretty quickly if it is not made of thick metal or stainless steel. But the listed disadvantages are more than offset by the advantages:

1. The unit is safe in operation, since the combustion zone is completely covered with an iron case.
2. Acceptable waste oil consumption. In practice, a well-tuned potbelly stove with a water circuit burns up to 1.5 liters in 1 hour to heat 100 m² of area.
3. It is possible to wrap the body with a water jacket and remake the furnace for working out into a boiler.
4. The fuel supply and power of the unit can be adjusted.
5. Undemanding to the height of the chimney and ease of cleaning.

Pressurized air boiler burning used engine oil and diesel fuel

Types of homemade stoves in development

Engine oil contaminated with impurities does not itself ignite. Therefore, the principle of operation of any oil potbelly stove is based on the thermal decomposition of fuel - pyrolysis. Simply put, to obtain heat, mining must be heated, evaporated and burned in the furnace furnace, supplying excess air. There are 3 types of devices where this principle is implemented in various ways:

1. The simplest and most popular design of direct combustion with afterburning of oil vapors in an open-type perforated pipe (the so-called miracle stove).
2. Waste oil drip furnace with closed afterburner;
3. Babington burner. How it works and how to make it yourself is described in detail in our other publication.

The efficiency of heating stoves is low and amounts to a maximum of 70%.Note that the heating costs indicated at the beginning of the article are calculated based on factory heat generators with an efficiency of 85% (for a complete picture and comparison of oil with firewood, you can go here). Accordingly, fuel consumption in home-made heaters is much higher - from 0.8 to 1.5 liters per hour versus 0.7 liters for diesel boilers per 100 m² of area. Consider this fact, taking up the manufacture of the furnace for testing.

The device and disadvantages of an open-type potbelly stove

The pyrolysis stove shown in the photo is a cylindrical or square container, a quarter filled with used oil or diesel fuel and equipped with an air damper. A pipe with holes is welded on top, through which secondary air is sucked in due to the chimney draft. Even higher is the afterburning chamber with a baffle to remove the heat of combustion products.

The principle of operation is as follows: the fuel must be ignited using a flammable liquid, after which the evaporation of mining and its primary combustion will begin, causing pyrolysis. Combustible gases, getting into a perforated pipe, flare up from contact with an oxygen stream and are completely burned. The intensity of the flame in the firebox is regulated by an air damper.

This mining stove has only two advantages: simplicity with low cost and independence from electricity. The rest are solid cons:

• stable natural draft is required for operation, without it the unit begins to smoke into the room and fade;
• water or antifreeze that gets into the oil causes mini-explosions in the firebox, which causes fire drops from the afterburner to splash in all directions and the owner has to put out the fire;
• high fuel consumption - up to 2 l / h with poor heat transfer (the lion's share of energy flies into the pipe);
• one-piece housing is difficult to clean from soot.

Although outwardly the potbelly stoves differ, but they operate according to the same principle, in the right photo, fuel vapors burn out inside a wood-burning stove

Some of these shortcomings can be leveled with the help of successful technical solutions, which will be discussed below. During operation, fire safety rules should be followed and used oil should be prepared - defended and filtered.

Pros and cons of a dropper

The cardinal difference of this furnace is as follows:

• the perforated pipe is placed inside a steel case from a gas cylinder or pipe;
• fuel enters the combustion zone in the form of droplets falling to the bottom of the bowl located under the afterburner;
• To increase efficiency, the unit is equipped with forced air by means of a fan, as shown in the diagram.

Scheme of a dropper with a bottom supply of fuel from a fuel tank by gravity

The real disadvantage of a drip stove is the difficulty for a beginner. The fact is that you cannot rely entirely on other people's drawings and calculations, the heater must be manufactured and adjusted to suit your operating conditions and properly organize the fuel supply. That is, it will require repeated improvements.

The flame heats up the body of the heating unit in one zone around the burner

The second negative point is typical for supercharged stoves. In them, a jet of flame constantly hits one place of the body, which is why the latter will burn out pretty quickly if it is not made of thick metal or stainless steel.But the listed disadvantages are more than offset by the advantages:

1. The unit is safe in operation, since the combustion zone is completely covered with an iron case.
2. Acceptable waste oil consumption. In practice, a well-tuned potbelly stove with a water circuit burns up to 1.5 liters in 1 hour to heat 100 m² of area.
3. It is possible to wrap the body with a water jacket and remake the furnace for working out into a boiler.
4. The fuel supply and power of the unit can be adjusted.
5. Undemanding to the height of the chimney and ease of cleaning.

Pressurized air boiler burning used engine oil and diesel fuel

We make a pyrolysis furnace for testing

Now you know, how to assemble a stove from a gas cylinder with your own hands. Working on mining or on any oil, the unit will please you with a lot of heat. For example, the scheme of the working furnace presented above is designed for heating a room with an area of ​​​​70-80 square meters. m. Let's now consider the scheme for creating a pyrolysis unit - that is, a small potbelly stove.

Scheme of the assembly of a pyrolysis furnace operating on mining.

This oven will consist of three main parts:

• Oil container with lid and damper;
• Combustion/pyrolysis chamber;
• Afterburner.

All this is crowned with a chimney. Its recommended length is at least three meters, but chimneys 4-5 meters high work best.

The oil tank is made from a piece of pipe with a diameter of 344 mm, its height is 100 mm. From below we weld a cover from sheet iron. Our top cover is removable, it is made of a pipe with a diameter of 352 mm - sides 600 high are welded to it. In the cover we make a central hole for a combustion chamber with a diameter of 100 mm.Nearby we make a hole with a diameter of 60 mm - it will serve as a blower. This hole is closed with a simple rotating cap.

By adjusting the gap of the blower, we can regulate the intensity of combustion, which will affect the air temperature in the room. If you completely close the blower on a working stove, it may go out.

It remains to modify the combustion chamber. Everything is simple here - we take a drill and a 9 mm drill, drill 48 holes (6 rows of 8 holes in each). With a total height of the combustion chamber tube of 360 mm, the holes should be located at a distance of 20 mm from the bottom and 50 mm from the top.

After completing all work, check the tightness of all welds - this will allow you to count on the maximum efficiency of the stove.

Check the performance of the resulting unit on the street. This will protect you from possible fire and other accidents.

In order for the heating to be as efficient as possible, install the furnace on a working out in the corner, and cover the side walls with galvanized iron so that all the heat is reflected inside the room.

How to make a do-it-yourself oven for working out is the easiest way

In order to independently make a garage stove that will consume used car oil as fuel, you need to find an old gas cylinder. Before you start cutting it, you need to release all the residual gas and drain the condensate. After that, the cylinder is washed with water to exclude even the very possibility of ignition. To disassemble the cylinder, you need to lower it gas by pressing valve.

To make sure that the gas in the cylinder is completely absent, it is necessary to lubricate the valve with liquid soap.It is necessary to press the valve until the soapy solution stops bubbling.

An example of a homemade stove made from a gas cylinder

After the gas is completely released, the valve must be unscrewed. If this is not possible, then a small hole with a diameter of 10 mm will have to be drilled in the bottom of the cylinder. To do this, take a drill and drill in the center of the bottom, without pressing hard, so as not to get sparks. To be sure, the drilling site is constantly watered. As soon as the hole is ready, ordinary water is poured into the cylinder and washed. Then the water is drained and the places of cuts on the balloon are marked.

When making a do-it-yourself furnace from a gas cylinder for working out, the drawing of which was presented earlier, it is necessary to cut off the lower part. Its height is 20 cm. Legs are welded to it, which can be adjusted for ease of installation on any surface.

Do-it-yourself barrel oven dimensions

The primary combustion chamber is made from the lower part. Waste oil will be poured into it, which, in the process of controlled combustion, will heat up and decompose into volatile fractions. The upper part of this chamber is closed with a round cover made of steel 4 mm thick. It must be easily removed if necessary, since the inner surface of the chamber needs to be thoroughly cleaned from slags weekly.

A hole with a diameter of 10–15 cm is cut in the middle of the lid. A pipe 50 cm long is welded onto it, in which a set of 10 mm is drilled. holes. The pipe must be thick-walled, at least 4 mm. In the same cover, a smaller hole is made on the side, up to 5 cm in diameter. A small tube with a damper is inserted into it. She plays the role filler necks oil and a throttle to control the flow of air mixture into the furnace.

A mining furnace welded from sheet metal

Since a do-it-yourself furnace is being worked out, it needs to remove smoke without emitting fire, another chamber is made from the top of the cylinder, in which the exhaust gases cool before flying into the chimney. Inside this chamber there is a baffle that prevents direct fire from entering the exhaust pipe. Hot gases have time to burn out completely in this chamber while they go around this partition.

The height of the chimney should be 4 m. This is the optimal size to ensure proper draft. It must be strictly vertical, since any horizontal sections are capable of accumulating condensate in themselves.

Such an oven works as follows. Waste oil is poured through the hole in the combustion chamber two thirds of its volume. There it is set on fire. When the combustion intensifies, the damper is covered. This ensures more economical oil consumption and its complete burnout. When heated, the fractions that did not immediately burn out rise into a perforated pipe, where they come into contact with air, after which they ignite and burn, releasing heat in large quantities. The exhaust gases enter the upper chamber, where they are finally burned out and exhausted into the chimney.

So out of the ordinary gas bottle can make the oven on working off. A drawing with all the details and their dimensions can be seen in the photo.

In addition to the simplest method for manufacturing an oil furnace described above, more advanced options are also used. One of them is a capillary furnace in development. Doing it with your own hands is also within the power of anyone who knows how to handle metal and tools.

Oil in this design is not just poured into the combustion chamber, where it is in large quantities, but it is done gradually by a drip system. This method allows the oil to burn out with greater efficiency, and its consumption is reduced to a minimum. Separately from the furnace, an oil tank is installed in the upper part, which is connected by a pipe to the combustion chamber of the furnace. A control valve is installed in the branch pipe, with the help of which the flow of oil into the furnace is metered. Otherwise, the design is no different from the simplest working furnace. With your own hands, the drawings below will help you make such a unit without difficulty.

Scheme of drip fuel supply for a homemade stove

Advantages and disadvantages

A feature of such a furnace is the strong heating of the combustion chamber (central part), which is red-hot. Therefore, when the device is in operation, you should not leave it unattended, leave it for a long time or fall asleep. Some difficulty (in the absence of experience) is created by ignition, since it is required to start the mining evaporation mode.

The advantages of such ovens are:

• Safety: since it is not the fuel that burns, but its vapors, the process is easily regulated and adjusted to the optimal mode;
• simplicity of design;
• cost-effectiveness, lack of dependence on network resources;
• high efficiency.

At the same time, there are also disadvantages.

1. The specificity of the fuel used is such that it is often necessary to clean the chimney from combustion products, soot and other substances.
2. A high chimney is required - at least 4 meters.
3. The chimney configuration does not allow any bends - only a straight and strictly vertical pipe.
4. Mining for such furnaces must be cleaned, at least filtered. A particularly important point is the lack of water.

Given the specifics of using the stove, some refinement will be needed to place it in the bath.

Your actions
What to look out for
First of all, a brick box must be created around the furnace.
It will protect the surrounding area from fire.
Next: it is necessary to build a base around the furnace.
It is made of brick laid on edge and covered with a layer of sand at least 5 cm thick.
Access to the stove must be provided from a separate room that is not connected to the washroom or steam room.
Only a heater and a boiler for hot water go inside the bath.

We make a drip heater

Most often, craftsmen use old oxygen and propane cylinders with a diameter of 220 and 300 mm, respectively, to assemble droppers. The former are preferable because of the powerful thick walls that can serve for a long time and not burn out. A low-carbon steel pipe (St 3-10) with a wall thickness of 5 mm or more is also suitable.

Select rolled metal for the remaining parts according to the drawing of the furnace with the top feed of mining into the combustion zone. The blower fan is a “snail” from a VAZ 2108 cabin heater or its Chinese counterpart, the fuel line is a stainless steel tube with a diameter of 8-10 mm.

Manufacturing technology is as follows:

1. Make a flame bowl from a pipe cut or take a ready-made steel container. It must be taken out through the inspection hatch, so do not make the pallet too big.
2. Cut openings in the housing for the chimney pipe and the cleaning hatch. In the latter, make a frame and install the door (it can be bolted).
3. Craft an afterburner.Take your time to drill all the holes indicated in the drawing, do the bottom 2 rows first. The rest you will complete in the process of setting up the furnace.
4. Weld a cover and an air duct with a flange for fan mounting to the afterburner. Attach the fuel feeder as shown in the photo.
5. Assemble the heating unit and connect it to the chimney.

Afterburner in the close-up photo - side and end view

To regulate the heating power, it is necessary to provide a fan speed control and a device for dosing the fuel supply (as a rule, an automatic drinker with a jet break is used). According to the reviews of the masters on a popular forum where heating issues are discussed, the fuel consumption in the furnace can be controlled visually. The trend is as follows: if oil drops in a jet break, then less than 1 liter per hour burns out, and when a thin stream flows, more than 1 l / hour.

Different designs of dropper bowls

After the heater has been ignited and warmed up, it is necessary to set the optimal operating mode. The procedure is carried out according to the same scheme as with the miracle stove: you need to achieve the most transparent smoke from the pipe by drilling additional holes in the afterburner. The ideal flame color is blue, normal is yellow, and reddish is unsatisfactory. In the latter case, low heat transfer, high consumption and soot formation are observed. For details on the design and assembly of the furnace, see the video:

What furnaces can be built independently according to the drawings

A waste oil stove with a water circuit can have a different design:

The furnace is round in shape, welded from a steel sheet. The fuel tank is combined with the combustion chamber.The afterburner is a perforated pipe and an upper chamber equipped with a dividing wall that cuts through the flame. A hole is cut out in the cover of the lower chamber, where mining is poured, and air will also flow there. The principle is this: the wider the damper is open, the better the oil will burn.
Two barrel oven. In one (bottom) there is a fuel tank, there is an opening for its loading. The upper combustion chamber consists of a pipe that passes through the upper barrel filled with water. It has fittings for supplying water-coolant. Externally, the model is very similar to a samovar

Its body heats up quite strongly, so you need to handle the stove with care. Such a "samovar" is installed only in those rooms where accidental contact with the body of people or animals is excluded. This design has a big plus: a large tank acts as a heat accumulator.
Compact mini-oven from a square profiled pipe 18x18 cm and 10x10 cm

Simple in design, it is very easy and quick to assemble. You can cook food on it.
A practical model of a mining boiler with a water circuit from a gas cylinder with a cut-off top. Here you can provide an automated supply of mining. The oil line is located in the combustion chamber. The water circuit looks like a boiler through which a chimney channel is passed. Or it can be a copper coil-heat exchanger, which is wrapped around the furnace body.

This design has a big plus: a large tank acts as a heat accumulator.
A compact mini-oven made of a square profiled pipe 18x18 cm and 10x10 cm. Simple in design, it is very easy and quick to assemble. You can cook food on it.
A practical model of a mining boiler with a water circuit from a gas cylinder with a cut-off top. Here you can provide an automated supply of mining. The oil line is located in the combustion chamber. The water circuit looks like a boiler through which a chimney channel is passed. Or it can be a copper coil-heat exchanger, which is wrapped around the furnace body.

Sizes may vary. But the location of the main nodes is unchanged.

General principle of operation

If we want to get high-quality heating based on mining, the oil cannot simply be taken and set on fire, because it will smoke and stink. In order not to experience these unpleasant and dangerous side effects, you need to heat the fuel so that it begins to evaporate.

The volatiles obtained as a result of heating will burn. This is the basic principle of operation of the heating unit during mining.

Application of perforated tube

To implement this principle in the design of the stove, two chambers are provided, which are interconnected by a pipe with holes. Fuel enters the lower chamber through the filler hole, which is heated here. The resulting volatile substances rise up the pipe, being saturated with atmospheric oxygen through the perforation.

The schematic diagram of a two-chamber stove with a connecting perforated pipe allows you to understand exactly how a simple unit works at mining

The resulting combustible mixture ignites already in the pipe, and its complete combustion occurs in the upper afterburner chamber, separated from the chimney by a special partition. If the process technology is properly observed, soot and smoke are practically not formed during combustion.But the heat will be enough to heat the room.

Using the Plasma Bowl

In order to achieve maximum efficiency of the process, you can go a more complicated way. Recall that our goal is to release volatile components from the fuel by heating it. To do this, a metal bowl should be placed in the only chamber of the unit, which must not only be heated, but heated.

Through a special dispenser from the fuel tank, mining will come into the chamber in a thin stream or drops. Getting on the surface of the bowl, the liquid will instantly evaporate, and the resulting gas will burn.

The efficiency of such a model is higher, since the fuel supplied by the drip burns better, and the problem of topping it up during the operation of the furnace disappears by itself.

If everything is done correctly, the combustion of gases should be accompanied by a bluish-white flame. A similar flame can be observed when a plasma burns, so a red-hot bowl is often called a plasma bowl. And the technology itself is called drip supply: after all, fuel with it must be supplied in exceptionally small doses.

With all the variety of designs, the operation of all waste fuel heating units is based on the principle described above.

Safety rules for using the stove

Given the high openness of the flame and the high heating temperature, the mining stove is a source of increased danger. Therefore, a carbon dioxide fire extinguisher near her is not a whim of a fire inspector, but a vital necessity.

To light the stove, a little flammable liquid, such as thinner or gasoline, is poured over the oil.It is poured quite a bit - so that the initial flame is enough for the appearance of oil vapor.

It is very important to prevent water from entering the boiling oil. What this will lead to is easy to understand, remembering what happens if a drop of water accidentally falls into a frying pan with hot oil.

source water can become a saucepan or kettle on the stove that has accumulated frost or condensation on internal surfaces in cold weather. It is not recommended to pour other flammable liquids of unknown origin instead of oil.

Advantages and disadvantages of a miracle stove

A two-chamber waste oil furnace has one significant advantage - simplicity and low cost of manufacture. Making it is not a problem for any person with welding skills. The second plus is the ability to burn the most polluted oils, since they are poured directly into the chamber without any tubes that can become clogged.

Now for the disadvantages:

• low efficiency, as indicated by the high temperature of the exhaust gases (you can’t touch the chimney);
• average fuel consumption - 1.5 liters / hour, maximum - up to 2 liters, which is a lot;
• the stove smokes into the room during ignition and smokes a little after warming up;
• high fire hazard.

Scheme of a mini-oven

These shortcomings have been tested in practice and are confirmed by numerous reviews of real users. So that you have no doubts about this, we suggest that you familiarize yourself with the video, which shows the operation of the furnace in oil mixed with water:

Furnace for working out from steel sheets

Materials and tools

Waste oil stove designs made of steel sheets are very popular among craftsmen from the people.Such an oven has compact dimensions (70/50/35 cm without a chimney), weighs 27 kg, it can be connected to heating, it can be used in the cold, and the top of the oven can be used for cooking. To make such an oven, we need:

• steel sheet 4 mm thick
• steel sheet 6 mm thick
• Bulgarian
• file
• welding machine and electrodes
• a pipe with an inner diameter of 10 cm, a length of at least 4 m and a wall thickness of 4-5 mm for a chimney
• steel corners 20 cm high 4 pieces as legs for the oven
• drawing
• level and tape measure
• a hammer
• burner pipes made of steel, copper or painted sheet

Stages of manufacturing a furnace from steel sheets

To begin with, we print out a drawing of the future furnace with the details drawn on it.

Next, we make the details according to the drawing. Parts for the tank are made of steel sheet 4 mm thick, and for the bottom of the firebox and the cover of the tank from sheet 6 mm thick. The sheets are laid out on a flat surface, markings are made on them and details are cut out with the help of a grinder. All welding seams are checked for tightness and cleaned with a file.
A strip 115 mm wide is cut out of a sheet 4 mm thick, and we fold the strip into a ring with a diameter of 34–34.5 cm on a bending machine. We weld the strip by electric welding. We got an oil tank pipe.
From the same steel sheet we cut out a circle with a diameter of 34.5 cm. This will be the lid of the oil container. Weld the cap to the pipe for the oil container. We also weld corners to the lid from 4 sides. The oil container is ready!
We cut a strip 6 cm wide from a 6 mm thick steel sheet and roll a ring out of it to make a diameter of 35.2 cm.
From the same sheet in 6 mm we cut a circle with a diameter of 35.2 cm.We make a hole with a diameter of 10 cm exactly in the middle of the circle. A chimney pipe will be inserted into it. To the right of the hole, we retreat 4 cm and make another hole 5-6 cm, where the oil will pour. We weld a ring with a diameter of 35.2 cm with a circle with a diameter of 35.2 cm. The oil tank is ready!
We make the lower part of the tank. We cut a circle with a diameter of 35.2 cm from a 6 mm thick steel sheet. We step back a few centimeters from the edge of the circle and cut a hole with a diameter of 10 cm. From the center of the hole to the center of the circle itself, there should be about 11 cm. This will be a hole for the pipe into which the chimney is inserted pipe.
We cut off a part 13 cm high from a pipe with a diameter of 10 cm. This will be a branch pipe.
From a sheet 6 mm thick, cut out a rectangle 7 cm wide and 33 cm long. This will be the partition. It must be placed in a circle with a diameter of 35.2 cm closer to a hole with a diameter of 10 cm and welded. We insert an exhaust pipe 13 cm high into a 10 cm hole.
We prepare the pipe for the burner. On it from below, at a distance of 36 cm, we make evenly 48 holes of 9 mm, 6 circles of 8 holes 6 cm apart.
We insert a pipe with holes into the cover of the oil container, made of a sheet 4 mm thick. Using a level, make sure that the pipe is inserted evenly. If there are any deviations, then they are eliminated with a file and a grinder. Parts should fit snugly into each other, but not welded.
We insert an exhaust pipe 16 cm high into the opening of the oil filling tank.
We connect the bottom and top of the tank

ATTENTION! We don't weld! Parts must fit into each other. To strengthen, we make an o-ring with a diameter of 35.4 cm and put it on top of the tank structure

We check the accuracy of the fit of the parts with a level.
We weld the oil tank to the pipe with 48 holes by electric welding. On the other side of the pipe with holes, we weld a structure fastened with a sealing ring. Before welding, we carefully check the accuracy of the installation of parts with a level! We equip the oil filling hole with a round plate, which can be easily moved and moved away according to the principle of a peephole.
Now we mount a chimney from a pipe 4 m long. If it can be tilted indoors, then it is strictly vertical on the street so that the wind does not blow. ATTENTION! Under no circumstances should the chimney be laid horizontally! If the inclined pipes are long, then they can be strengthened with special bends made of steel bars.

Principle of operation

The operation of the furnace is based on the combustion of engine oil vapor in a closed container. The product is not just the cheapest, but junk. Most often, used oil and its disposal is a headache for service stations, garage owners. After all, it is absolutely impossible to pour mining into the ground, domestic sewage. And here "harmful" oil is poured into the stove, and serves for the benefit of man.

The design of the most common modification, made of metal, consists of cylindrical tanks, lower and upper, a short transitional compartment and a chimney. It's easier and harder to imagine. First, the fuel is heated in the first tank: the oil boils, begins to evaporate, the gaseous product passes into the next compartment (short pipe). Here, oil vapors mix with oxygen, ignite intensely and burn out completely in the last, upper tank. And from there, the exhaust gases are released into the atmosphere through the chimney.

Optionally, the heater is supplemented with a tray for adding oil. Little is required from the owner: fill the tank with mining, set it on fire and monitor the normal operation of the furnace.

Oil oven in the garage

The most economical system garage heating is considered a waste oil stove. Its design is not difficult, since the mechanism of operation of the furnace belongs to physics for the 8th grade. All the necessary materials for its creation are widely available.

There are four design options for waste oil furnaces:

• on testing from a gas cylinder or from metal without additional elements;
• on working out with supercharging - in them the air supply is enhanced by the use of a fan;
• on the development of the drip type - a dropper is used for metered supply of oil;
• in mining with a water circuit - for heating large rooms.