Oil-fired ovens are the most suitable option for heating garages, storage and workrooms. The result of the operation of such equipment combines the low cost of fuel used and good heating. Waste oil (it is also called waste oil) is attributed to those types of waste that are present at any service station in large quantities. Oil can also be found in garage facilities. It is difficult to recycle and almost impossible to dispose of.
As for waste oil furnaces, they are used to reuse this product. Any oil that has served its life, engine, transmission or industrial, it can be used as fuel. Homemade heating systems are capable of working on it.
Operational Features
Oil furnaces have a special design, due to which the manufacture of devices is quite realistic to produce on their own. Among the advantages of this type of heating can be identified mobility, efficiency. Similar designs can even be used as cooking surfaces (this applies to their upper part).
Waste oil furnaces are economical not only in maintenance but also in manufacturing. This may include fuel consumption and fuel selection. Owners of small garages and storage rooms prefer just such devices for the reason that they have small dimensions. That is why the furnace body can be easily dismantled and moved to another location.
Oil furnaces are non-volatile. The use of such equipment is not connected either with gas pipelines or with electric networks. The device does not involve the use of additional power sources, such as batteries or rechargeable batteries. However, you should be prepared for the fact that there are some difficulties associated with the use of heating furnaces that operate on waste oil. These include the need to install a fairly high chimney, its size should be 4 meters. Among the minuses is the weekly systematic cleaning of the structure from soot and dirt.
Preparation of materials
Oil furnaces are made quite simply, with no need to purchase any products. You can use scrap metal, which can be found in any garage. The prototype for the manufacture of the furnace will be the compressor housing from an old refrigerator or a cylinder. Thin-walled pipes that are 4 meters long will be needed. As for the diameter, it can vary from 8 to 10 centimeters. These elements will perform the function of additional and main radiators. Another pipe will be needed for the hood.
The method of manufacturing a furnace with a single chamber
Cast iron stoves for mining can be purchased at the store, but if you decide to make a metal version of this design, then you should consider that during operation it should be in a vertical position. To do this, you will need to prepare the legs, the corners or pipe sections are perfect. Having prepared pieces of metal, the length of each of which will be equal to 20 centimeters, you need to weld them to the body of the future design. Then a homemade heater is installed.
At the top of the device you need to cut a hole for the hood. Its dimensions should correspond to the radius of the prepared pipe. You can try to drill a small cutout using an angle grinder, as for the large diameter hole, it is best to do such work with a welding machine.
Production of pipes for hoods
According to users, cast-iron stoves are not very durable, as they tend to burn through. It will be much more practical to make a similar installation yourself.
In the next step, you will need to weld the pipe for the hood. Holes should be made in it; to perform these manipulations, it is recommended to use an angle grinder with a cutting wheel. The holes must be located at a distance of ten centimeters from the body. Their height should be 0.5 meters or less.
Having retreated one meter, in the same pipe you need to make an insert of the second pipe, which is useful for an additional radiator. To perform these works, it is best to use a welding machine. The additional radiator must be parallel to the floor.
In the upper part of the home-made design, you need to make a hole for the fuel supply. Such an iron stove is the easiest option, which you can improve after. To do this, put a sheet of iron on a horizontal radiator, then the stove can be used not only for heating, but also for cooking, as well as for heating water.
Production of a furnace with two chambers
An iron furnace can have two chambers. They will be connected to each other by a pipe segment of impressive diameter with holes drilled in it. The lower half of the structure will be a tank for waste oil, which will be used as fuel. At the same time, it will serve as a combustion chamber and an evaporator.
Work on the bottom
If you decide to make such a furnace at working out, then consider that it should be equipped with legs. The air gap between the bottom of the structure and the floor will be an additional factor that will improve the heating of the room. In the lower case, you should make a hole that is covered by a shutter. This will be needed to adjust the operating modes and oil supply to the chamber.
Body manufacture
If you decide to make an effective furnace for working out, then you will need to weld a pipe that is pre-supplied with holes in the upper cover from the bottom of the housing. This will become a afterburner, boiling vapors of fuel will burn out in it. If you make a design according to this scheme, then you can ensure almost complete combustion of the oil. A cylindrical heated housing is welded to the top of this heater. Inside should be a partition that is needed to delay the warm combustion products.
Chimney Making
The device of the furnace assumes the presence of not only two chambers, but also a chimney. The pipe must be welded to the top of the module for heating. The diameter of this component should be equal to one hundred millimeters. As for the length, the permissible limit is from 3 to 4 meters. The chimney can be placed not only vertically, but also, if necessary, at a certain angle. The oil furnace for the garage will only work continuously if it is possible to ensure uninterrupted supply in the fuel casing. To do this, you can strengthen the additional tank, which is located above the evaporator. The container must be connected to the last component by a separate metal pipe.
Increase in efficiency
If the oil furnace for the garage is not working efficiently, then you can try to achieve an increase in efficiency. For this, experts advise directing the air flow forcibly to the upper part of the structure, for which it will be necessary to slightly change the scheme. An air heating chamber is installed on the upper compartment of the devices. In the immediate vicinity, but at a safe distance, a fan must be fixed. With it, air will be pumped into the exchanger, heated and supplied to a heated room. If you make an oil furnace with your own hands, then it can be improved by adding a water circuit. This will allow heating several rooms at once in one building.
Design device for waste oil
If you will do an oil furnace with your own hands, it is important to familiarize yourself with its device initially. You can distinguish between these designs by the method of oil supply and the absence / presence of boost. If you apply the latter, then you will be able to increase the temperature of combustion, and hence the efficiency. However, in this case, you will certainly encounter rapid wear of the case, which will lead to the need for repairs.
The device of the furnace is quite simple, which is why you can build it yourself. The design involves the presence of only a few elements, namely two chambers, a connecting pipe, as well as a chimney.
As for the lower chamber, it should have a shutter and a hole. The damper is located in the lower tank, which is called the firebox. There should be a partition in the upper tank. This compartment is called an afterburner. Experts do not recommend supplementing the design with regulating nozzles, droppers and other details that can complicate the operation of the furnace. Adjustment should be carried out without automation, you will have to move the damper manually. The last element should be placed above the hole into which the used oil is poured. If you wish, you can only heat the oven a little or heat it up to 900 degrees.
Production of a gas cylinder furnace
Before you make an oil furnace, you should consider that the process technology may be different. For example, to organize the operation of the unit, you can use a conventional gas cylinder. Above was described a technique where sheet metal is used. It is easy for professionals to cut the material, and then weld it, having formed two combustion chambers. In the absence of experience, seek the help of specialists.
At the last stage, it will be necessary to strengthen the legs, and then connect everything with a pipe. However, these operations involve fairly lengthy work with the welding machine. In order to reduce technology, craftsmen use traditional gas cylinders. Such metal furnaces turn out to be quite durable, since the tanks have thick walls. This allows the design to provide fire safety and a long service life.
Regardless of whether it is used for the manufacture of sheet metal or a cylinder, creating a design, you must adhere to certain rules. The air supply to the first chamber must necessarily be made with the possibility of regulation. For this, an ordinary damper is perfect, which can be slightly opened when there is a gap of arbitrary sizes. The compartment into which the combustion oil is supplied must always be collapsible, this will allow for easy cleaning. Before carrying out the work, you should carefully study the instructions. Furnaces of this type should be provided with good traction. For this, the length of the chimney must be made exactly as recommended above.
Manufacturing technique
Before using the container, it must be carefully prepared. To do this, all gas is discharged, and the inner surface must be washed. Water is poured into the cylinder. In no case do you need to start cutting the product unless you have taken all the steps to eliminate gas.
The upper and lower parts are cut off from the cylinder. The resulting halves will go to the manufacture of a collapsible combustion chamber for testing. Metal legs should be welded to the bottom. In the upper part of the first chamber, you need to make a hole in which a piece of pipe is installed. The last element should be equipped with an adjustment plate. Air will flow through the openings and oil.
If you are making an oil furnace, drawings of this design should be studied before starting work. In the center, you need to make the same hole to which the pipe is welded. It will connect both combustion chambers. It makes several holes for air flow. Sheet metal and the middle of the cylinder will be used to make the secondary combustion chamber. It must be welded to the connecting pipe. At the final stage, a chimney should be made and installed.
In order to prevent the furnace from losing stability on an uneven surface, legs that are freely adjustable in height must be welded in the lower part.
Safety operation
The furnace must be installed on a surface that will ensure fire safety. It can be a metal sheet or any other similar material. It is important to ensure that the oil does not spill out of the combustion chamber, for this it is not recommended to fill the tank more than 2/3. If the oil boils after ignition, then it is necessary to reduce the air supply by adjusting the damper. The draft will be sufficient if you clean the oil tank and chimney from dirt every week. In order to eliminate soot in the upper part of the structure, it is necessary to tap the surface.
The furnace should be installed in a place where the construction will not interfere with the movement of people. It is important to rule out the possibility of flammable objects being nearby. Before the firebox, it is necessary to place material that does not ignite and does not burn even with direct exposure to fire.
Conclusion
As for car repair enterprises, they do not experience a lack of development, but if you are a regular car enthusiast, it is recommended to acquire a suitable capacity. It will be possible to collect oil in it, which can be obtained in the summer. In winter, it will be possible to efficiently use this fuel.
If you do not have a car, but decided to make or purchase a similar furnace, then you need to ask about the presence of unnecessary mining at service stations. Employees of enterprises of this orientation are almost always ready to share the resource for free or at a low cost. This is very beneficial, since you do not have to spend money on fuel at all. That is why the designs described are so popular today.