How to make an air compressor. How to build an electric air compressor yourself How to make a powerful compressor

The compressor is a universal unit, which has found a fairly wide application, both in large-scale production and in small workshops. It is also installed on various vehicles and special equipment. That is why the question of how to create a Zilovsky compressor is of great interest to many craftsmen who want to save on the purchase of this device.

household purpose

To begin with, it should be said that such products will not be very productive, and their manufacture may be costly. However, there are many application options that make you look for material on how to make a compressor with your own hands from a Zilovsky compressor.

• First of all, such a device is perfect for inflating car tires.
• Also, a similar unit can be used to work with some low-power pneumatic tools.
• Most often, these products are used in workshops for applying paint to the surface. The fact is that in the presence of a volumetric receiver, they can work for quite a long time and create the pressure necessary for this.
• Some experts use such units in blacksmithing and other industries. The main thing is that the technical characteristics correspond to the specified parameters.

Automobile compressor

Novice craftsmen often ask the question of why this particular part is worth purchasing in order to create a compressor with your own hands. they consider the car obsolete, and the units that are installed on it are worn out. However, it is immediately worth noting that in our country this particular part is the easiest to find, and its cost directly depends on the condition. At the same time, the simplicity of manufacturing this unit allows for elementary repairs and greatly simplifies maintenance.

It is also much easier to make a compressor with your own hands from a Zilovsky compressor than to use other products of this type for this. To perform elementary tasks, it will even practically not need to be redone. However, if long-term use or heavy loads are required, then some refinement will need to be done.

Necessary equipment

To create a compressor with your own hands from a Zilovsky compressor, it is necessary to resolve the issue of transmitting torque to the unit itself. You will also need an engine of a certain power and with a specific number of revolutions. Therefore, certain purchases are required.

In this case, special attention should be paid to the receiver. It is selected in accordance with the tasks assigned to the product. At the same time, a pressure gauge and a safety valve are installed on it, which will be responsible for the required pressure.

Torque transmission

When a compressor is made by hand from a Zilovsky compressor, a very important decision must be made about how power will be transferred from the engine to the unit itself. At the same time, some masters prefer to connect directly, believing that this way they will not lose the number of revolutions and power. However, it is worth remembering that for such methods of implementing connections, you need to have a fairly powerful engine. Therefore, most often used

When they make a compressor with their own hands, they usually try to connect the Zilovsky compressor to the engine through a gearbox. So you can get a pretty good effort during the initial start-up or if there is pressure in the receiver. However, the cost of a good gearbox is quite high, and option c can be considered the most optimal.

Engine

If we assemble it with our own hands, then it is very important to choose the right power unit, which will be as close as possible to the operating parameters of the device. In this case, they usually look at the rotation speed. It should be at least 2000 rpm, since it is this parameter that will create maximum pressure and enable the structure to work in a gentle mode.

The selection of power is suitable separately. The fact is that the cost very often directly depends on this parameter. It is generally accepted that for such compressors a power of 1 kW is sufficient. However, this justifies itself if the unit is planned to be used for a short time and without heavy loads. Therefore, more powerful products are most often used.

Receiver

They usually try to make a typical iron-based compressor from ZIL 130 compact and mobile. Therefore, it simply does not make sense to use large and voluminous receivers. Also, you should not purchase these elements of the unit separately, since you can always create them yourself. To do this, you can use almost any metal container. In this case, it is best to use gas cylinders or old fire extinguishers.

It should be noted right away that further refinement of the receiver will be required. It will need to install a pressure gauge and pressure regulator. Usually, a separate unit with a gearbox is purchased, which is installed at the inlet to the tank. It is also very important to install the back pressure valve. It is adjusted to the optimal mode of operation of the future product with a certain margin of 10-15%.

Refinement of the compressor

Even if it is planned to make an ordinary garage compressor from a ZIL compressor, then the unit itself will need to be slightly modified.

• First of all, it is necessary to create cooling. The fact is that such units overheat during their work and as a result of this, not only productivity, but also the service life decreases. Therefore, the connecting rods should be drilled, and an oblique tube is installed in the bottom cover.
• To control the oil level, it is necessary to install a transparent filter at the outlet of the crankcase. It also makes sense to put a moisture separator, which you can make yourself from a small fire extinguisher.
• Separately installed and a tank with oil. At the same time, it should immediately be noted that it will be used as an expansion tank and will help normalize the pressure in the system.

To date, there is simply a huge number of various improvements that are aimed at increasing productivity and service life. All of them usually refer to and transmission of torque. However, the final choice always depends directly on the purpose of the final product.

Assembly

First, it is worth making a bed, on which the compressor will be installed with your own hands. ZIL 130 has certain seats for this unit, which must be transferred to the frame. So you do not have to make additional holes in the compressor itself, and it will be possible to use an additional shock absorption system.

Next, the engine is mounted on the frame. In this case, the fixation is carried out in a rigid position, at a distance necessary for the implementation of the transmission of torque. The receiver and other elements that can be connected through hoses can be located separately. Sometimes it is easier to connect them at the place of work, so as not to weigh down the bed itself.

• If a compressor is made from Zilovsky, the tools will need to be selected very carefully. You will need to have a drill, a welding machine, a set of keys and much more. There may also be situations where some types of work are easier to do in the factory or with the help of special machines.
• To create shock absorbers when fixing all units to a frame or a supporting frame, it is best to use rubber gaskets or inserts. However, it is worth remembering that with intensive use they wear out quickly and you should always have spare ones.
• When buying a compressor, you must be very careful, because the appearance of the product does not indicate the state of its internal components and assemblies. It simply will not work to check the product on the spot, which means that such a purchase should be made only from trusted sellers.
• If you do not solve the problem with overheating of the compressor, then it must be operated in a gentle mode. So it will last much longer, although this may cause some inconvenience in work. That is why the unit is selected for specific needs.
• You can install a pressure gauge with special contacts on the product, which are connected to the electrical circuit for starting the engine. This automates the operation of the device, and will also reduce the likelihood of rapid overheating.
• The electrical circuit for connecting the compressor to the electrical circuit directly depends on the type of engine selected. At the same time, you should not come up with workarounds for starting the primary winding so as not to lose power. This will affect the operation of the product if there is residual pressure in the receiver, even if there is a check valve and a fairly powerful engine.

Conclusion

When assembling a Zilovsky compressor with your own hands, it should be remembered that this work will require the performer to be able to handle various tools and observe the technique of processing all kinds of details. It is also worth remembering that the purchase of certain units will lead to costs, which means that before starting work, you should carefully evaluate all costs and compare them with your capabilities. The fact is that with intensive use of such a compressor, it lasts only a couple of years.

The compressor can be called a fairly common equipment that is used to create pressure in various systems. There is simply a huge number of different versions of such devices, all of which are characterized by high efficiency in use. Industrial compressors cost quite a lot of money, which is why many are considering the possibility of creating a structure with their own hands. There are many different instructions on the Internet, the required power and performance are taken into account when choosing. Consider the features of creating a homemade compressor from a gas cylinder in more detail.

Power

There are several fundamental parameters that must be taken into account when creating a compressor from a gas cylinder. Power can be called the most important, since it reflects the functionality of the device, which consists in compressing gases. Among the features of the power indicator, the following can be noted:

1. To measure this indicator, bars, atmospheres or Pascals are used. To translate the values, various tables are used, which greatly simplify the task.
2. When creating a compressor, one should take into account the moment that the pressure decreases from the source to the direct executive body. In this case, the pressure drop occurs in the entire pipeline or on critical elements.
3. Power largely determines how much pressure can be created in the system. It depends on the installed electric motor and many other points.

Manufacturers of industrial equipment always carry out the indication of power in the specification. In the case of work on the creation of a home-made structure, it is necessary to perform calculations and select the appropriate elements.

The classification of compressors is carried out directly according to the power indicator, which is reflected in the pressure. It looks like this:

1. Vacuum.
2. Low to medium group.
3. High and super high.

Most homemade designs belong to the second group. This can be attributed to the fact that too high an indicator becomes the reason for the complication of the task.

Performance

Another important parameter is performance. This indicator determines how much substance can be transported per unit of time. Among the features of this moment we note the following:

1. Usually, l / min, m 3 / h and some others are used for measurement. Indicators can be converted into certain units of measurement to significantly simplify calculations.
2. Performance is determined under standard conditions, which are defined by a temperature of 20 degrees Celsius and normal atmospheric pressure. Recalculation of productivity can be carried out depending on what the ambient temperature is.
3. All compressors are divided into several main groups. Examples include small, medium and large productivity. This indicator largely depends on the design aspects.

Performance is also indicated in the instruction manual. This indicator is determined by conducting tests under certain conditions. As for a home-made design from gas cylinders, it is quite difficult to control and measure performance.

Air compressor from a fire extinguisher or gas cylinder

When considering how to make an air compressor with your own hands, the options should be borne in mind that such a design is represented by a combination of a motor and a container that acts as a receiver. In this case, it is possible to use a gas cylinder or a fire extinguisher. The created compressor from a gas cylinder with your own hands is characterized by the following features:

1. The engine can be taken from an old air conditioner or refrigerator. They are used for direct injection of air mass.
2. The gas cylinder acts as a reservoir for storing compressed air.
3. At the outlet, a reducer with a pressure gauge is installed to measure the pressure in the system.
4. If an airbrush is created, then there is a fitting at the outlet through which the blow gun is connected. This element can be replaced by any other, it all depends on the task. The connection is made using a special hose, which is designed for heavy wear and heavy use.

In general, we can say that such a design is quite simple in execution and is characterized by high performance. At the same time, it is quite simple to make it, which requires certain materials and tools.

How to make a complete compressor with your own hands

In order to create such a device with your own hands, certain materials and tools are required. The materials are as follows:

1. Gas cylinder, the volume of which is 25 liters.
2. A motor that is obtained after parsing a refrigerator or air conditioner.
3. Reducer with built-in pressure gauge.
4. Reinforced hose designed for high loads.
5. Blow gun and other executive body.
6. Armature and wheel.

Work is carried out only with certain tools. They are the following:

1. Bulgarian for cutting.
2. Welding machine for connecting various elements.
3. Drill for making holes.
4. Set of wrenches.
5. Screwdriver.

After finding everything you need, you can proceed to the direct work.

The procedure for creating a compressor for generating pressure with your own hands is quite simple, you can do it in your own garage. The step-by-step instruction looks like this:

1. To begin with, a gas cylinder is required, from which the valve is unscrewed and the remaining gas is drained.
2. After that, the motor is removed from the old air conditioner or other suitable device.
3. The valve is unscrewed.
4. The gas cylinder is filled with water.
5. The drill is used to make holes that are suitable for fixing the valve and reducer.
6. Protruding elements must be cut off. This greatly simplifies the use of the compressor.
7. A new shackle is welded on to simplify the connection of other equipment.
8. Experts recommend making a special element that is required to fix the wheels. They greatly simplify the transportation of the compressor from the gas cylinder across the territory.
9. The next step involves creating a shelf on which the engine will be installed. When creating a shelf, it is worth considering the moment that it must have increased rigidity. Otherwise, during operation, vibration will occur, due to which the performance of the installation will deteriorate.
10. You can make the device more attractive and extend its service life by coating the surface with a paintwork material.
11. Electricity and hoses are connected. Particular attention should be paid to this point, since improper wiring can cause a large number of various problems.

In most cases, this element is used to directly equalize the flow in the system. Due to this, the quality of the work being carried out is significantly improved, for example, when covering the surface with a paintwork material.

The gas cylinder is made in most cases from a material with a low corrosion resistance, which is why the surface is protected by paint.

How to choose the optimal parameters of the receiver

The choice of the most suitable receiver is carried out according to the main parameters. The most important can be called the volume, which depends on the following points:

1. Installation performance. In this case, a gas cylinder with a capacity of 25 liters is sufficient.
2. Compressed air consumption cycles. This indicator is characterized by how many times you have to turn the unit on and off.

Before using the gas cylinder directly, attention should be paid to its integrity. The presence of even minor defects determines that the device cannot be operated. The test is carried out by filling the container with water. In addition, water allows you to free it from gas residues that should not enter the system.

In the inventory of the car owner's garage, an air compressor will be useful. With it, you can paint a car, pump up tires, supply air to pneumatic tools. Consider how to make a compressor for painting with your own hands from available materials.

Compressed air - a true assistant to a true master

There is always a use for an air compressor in the garage: from the banal blowing off of dust from surfaces treated with abrasive to creating excess pressure in pneumatic tools. A considerable part of the working resource of the compressor falls on the performance of car painting. And this imposes certain requirements on the generated air flow.

It must flow strictly evenly and not have any impurities in the form of drops of water, oil or suspended solids. Such defects as granularity, shagreen and cavities on a freshly applied paintwork are just due to the ingress of foreign particles into the jet. Paint streaks and matte spots on the enamel occur when the mixture is unevenly supplied.

Branded air compressors from the manufacturer have all the features for a perfect airbrush, but cost a lot of money. You can save money and create a functional model that is not inferior to professional ones on your own by studying the theoretical information and watching the do-it-yourself compressor video as a guide. The principle of operation of all models, both homemade and professional, is quite simple and is as follows. An overpressure is built up in a device for storing compressed air, called a “reservoir”. Air can be pumped both manually and mechanically.

With manual filing, financial resources are saved, but a lot of effort and energy is spent on controlling the process. With automatic injection, all these shortcomings are eliminated, the only thing that remains is the routine oil change in the air pump. Further, compressed air through the outlet fitting is supplied in a uniform flow to the actuators. As you can see, there is nothing complicated, and you can create a workable model in a few minutes.

We make the simplest compressor with our own hands

One option would be to make a compressor for painting from a used car chamber. For manufacturing you will need:

• The receiver is a car camera. Available with or without a tire
• Supercharger - car pump with pressure gauge
• Nipple from a bad camera
• Repair kit for rubber
• tailor's awl

Having collected the necessary materials, we proceed directly to the manufacture of the device. We take an unnecessary car camera and check it for leaks by inflating it with a pump. If the balloon holds air, then everything is fine, and you can proceed to the next step. If there are leaks, localize the damage and seal them or vulcanize with raw rubber.

Further, a hole is made in the prepared receiver for an additional nipple, through which a uniform stream of compressed air will subsequently exit. We glue the additional fitting using a rubber repair kit and connect it to the spray gun. We unscrew the nipple in it - the air flow should come out freely. We leave the nipple in the native nipple of the car chamber - it will work like a valve, holding excess pressure.

Then, empirically, we determine the required level of air pressure in the receiver by spraying paint on any surface. The enamel should lay down evenly, without jerks. The value of excess pressure is determined using a pressure gauge and must be such that when the aerator button is pressed, its level does not change abruptly.

It will not be difficult to assemble such a compressor model, but you will immediately be convinced of the effectiveness of the repair with the help of a compressor, rather than spray cans of paint. The main thing is to follow the rule - moisture or dust should not get into the airbrush into the car chamber, and, therefore, even then, into the spray gun. Otherwise, they will mix with the car enamel, and all the painting work will need to be done again. The assembled model will work properly, but it is better to automate the air injection and make additional changes to the design.

Semi-professional compressor for do-it-yourself painting

According to experts, home-made compressors with receivers have a longer service life than models from domestic and foreign manufacturers. And this is understandable - everything is done by hand and, even if some part fails, it will be a matter of a couple of minutes to replace it. Consider how to make an air compressor that is not inferior to products of well-known companies from readily available materials that we need according to the list below:

• pressure gauge
• Reducer with oil filter
• Pressure control relay
• Gasoline fuel filter
• Water supply cross (quadruple) with a three-quarter female thread
• Thread adapters
• Automotive clamps
• Compressor motor
• Receiver
• Semi-synthetic engine oil with a viscosity of 10W40
• Toggle switch for 220 volts
• brass tubes
• Oil resistant hose
• Thick board for the base
• pharmacy syringe
• rust converter
• Studs, nuts, washers
• Sealant, fum tape
• Metal paint
• Needle file
• furniture wheels
• Diesel engine power system filter

Finding all the components is not difficult, it’s worth starting with the heart of the whole system - the air blower.

The engine is the actuator of the automatic compressor

As an engine, we will use a compressor from an old refrigerator. As a rule, they are equipped with a starting relay, which is very convenient for constantly maintaining a certain level of pressure in the receiver. It is preferable to use compressors from refrigerators of the old Soviet model, they allow you to pump a higher pressure than their imported counterparts.

After removing the execution unit from the dilapidated refrigerator, clean it of accumulated dirt and rust. Then treat with a rust converter to prevent further oxidation. This way you will prepare the engine housing for further painting.

Next, change the oil in the compressor. A rare refrigerator was regularly serviced and lubricated, which is quite justified - the system is completely isolated from the atmosphere. You can use semi-synthetic motor oil, it is in no way inferior to compressor oil and, in addition, has many useful additives.

There are three tubes on the compressor - 2 open and one sealed. The open ends are designed for air circulation, one of the tubes is the inlet, the other is the outlet. To determine which path the air is moving, momentarily energize the compressor. And remember which duct draws in air and which lets it out.

The sealed tube is designed for routine oil changes. The closed end must be carefully removed. To do this, we file the tube in a circle with a file, trying to prevent metal filings from getting inside the system. Then we break off the filed tip and drain the old oil into some vessel to determine the amount to be replaced. And fill in semi-synthetics in a slightly larger amount with a syringe.

Then the engine lubrication system must be shut off. For which, having picked up a screw of the appropriate size, we wrap it with fum tape for tightness, screw it into a tube. The supercharger from the refrigerator tends to sweat with grease - that is, there are droplets of oil in the output air stream. They will be held by an oil-moisture separator for the compressor. With our own hands, in the future, we fasten the engine with a starting relay on a wooden base to the position in which it was attached to the frame.

The compressor relay is sensitive to position in space and often its top cover is marked with an arrow. Only with the correct installation, the process of switching modes will proceed correctly.

Compressed air tank

Fire extinguisher cylinders are best for storing compressed air. They are designed for high pressure, have a large margin of safety and are ideal for mounting attachments. Let us consider the metal case of the OU-10 fire extinguisher with a working volume of 10 liters as a receiver. This cylinder is designed for a pressure of 15 MPa or 150 bar with a large margin of safety.

We turn off the lock-start device (LPU) from the future receiver and in its place we screw in the adapter, on the thread of which we wind the fum tape for sealing. If the fire extinguisher has traces of corrosion, then they must be removed with abrasives and a rust converter.

From the outside, everything is easy to do, but with the inner surface you have to tinker a little. To do this, pour the rust-cleaning agent into the cylinder according to the instructions and shake the contents thoroughly. Then we screw in the water cross, using sealant and fum tape for sealing. So, the two main parts of our compressor are ready, and you can proceed to the next step.

Installation of device parts

For ease of storage and movement, it is best to arrange all compressor parts compactly on one base. We will use a wooden board as a basis, on which we securely fix the engine - supercharger and fire extinguisher body.

We fix the compressor engine with threaded studs threaded into pre-drilled holes and nuts with washers. We place the receiver vertically, using three sheets of plywood for fixing, in one of which we cut a hole for the cylinder.

The other two, with the help of self-tapping screws, are attached to the carrier board and glued to the sheet holding the receiver. Under the bottom of the receiver, at the base, we hollow out a recess corresponding in size. For maneuverability, we fasten wheels from furniture fittings to our base. Next, we perform the following operations:

Now it remains only to paint the entire compressor and proceed to field tests.

Adjusting the pressure in the receiver chamber

Having assembled the structure, you should check its performance. We connect an airbrush or a tire inflation gun to the compressor outlet. After that, with the toggle switch off, turn on the plug in the network. We set the control switch to the minimum pressure and then apply power to the supercharger. The pressure created in the receiver is controlled by a pressure gauge. After making sure that when a certain level is reached, the relay turns off the engine, we check the tightness of the air ducts and connections. This is easy to do with soapy water.

After making sure that the compressed air does not leave the system, we bleed it from the receiver chamber. As soon as the pressure in the cylinder drops below the set mark, the relay should work and start the compressor. If everything is functioning properly, you can try to paint some unnecessary detail. Preliminary work on preparing the surface for applying enamel is not required here - it is important for us to develop skills and determine how much pressure is required to paint the product. Experimentally, we determine the value in atmospheres at which excess pressure is enough to paint the entire part with a uniform layer with a minimum amount of blower operation.

As you can see, creating a car compressor with your own hands does not cause any particular difficulties. The device made according to the second option requires more time to manufacture, but it will all pay off with further operation. The automatic pressure control and blower start-up system will allow you to work with great convenience, without being distracted by control over the receiver chamber. The compressor can be used not only for car care. With it, you can paint the fence, garage door.

In order for a self-made compressor to serve for a long time and properly, routine maintenance should be carried out. This is, first of all, regular oil changes and timely replacement of filter elements. Since we have securely fixed the engine to the base, there is no point in unscrewing it. To drain the oil, use a syringe. Having unscrewed the screw that closes the filler hole, we put the hose tightly on the tube and pump out the mining. We also pump fresh engine oil with a syringe. With filters, everything is simpler - we change them as they become dirty and the filling rate of the receiver chamber decreases.

Alternative choice - do it yourself or buy finished products?

Today, the market for air compressor offers is replete with diversity. Piston, vibration, screw and many other classes of these devices are produced for various purposes. Ready-made compressors can be bought in household appliances stores, auto parts stores, and on specialized sites. The variety of products offered is so great that it will take a lot of time to choose the required product. If you decide to purchase a finished device, carefully study the specifications, price range and customer reviews.

Of course, it is better not to save money and purchase expensive products from famous brands. But a big-budget purchase pays off only if you plan to do car repairs professionally. The choice of little-known products is fraught with unjustified risks. Cheap models sin with low-quality materials. It often happens that engine parts fly out instantly, and warranty repairs take several months.

From the position of reliability, hand-made assembly wins in many respects. Firstly, according to statistics, compressors in refrigerators work for decades. And the old refrigerator is thrown out not because of a broken engine, but because of a refrigerant leak or corrosion of the walls and bottom. And there is nothing to say about the fire extinguisher - they are made with a tenfold margin of safety, which is immediately checked at the factory. So maybe you shouldn't buy a pig in a poke, but make a device on your own? Moreover, after studying the material, you know how to make a compressor with your own hands at home. A well-made and properly functioning device will not only please the owner, but will also become the envy of familiar motorists.

In the garage of a car enthusiast, you can find many useful and not so useful tools. In addition to the usual set, an air compressor will also be useful. It is suitable for car painting, tire inflation, air supply for pneumatic tool operation. Let's see how to make a car with your own hands. We will also find out how it is arranged and on what principle it works.

Compressed air to help the car enthusiast

Air compressors are quite useful in workshops and garages. There is always a task for these devices. This can be banal cleaning, cleaning from dust that has formed after grinding, or creating air pressure for the operation of various air tools. Most compressors are used for painting. This imposes some requirements on the device.

Air flow and spray painting

For work with paint, the air flow must be as uniform as possible. Also, the compressed air stream must not contain water particles, oil impurities or other oil products. The presence of suspended and solid particles is unacceptable in the flow.

Sometimes when painting you can see defects. Often this is graininess on a freshly applied coat of paint. This happens due to the fact that there were foreign particles in the stream. If paint streaks or dull spots are observed, then this is a sign of uneven supply of paint, enamel or varnish.

Branded or homemade?

What is the difference between a proprietary compressor? Its characteristics are ideal for working with an airbrush or spray gun, but factory products cost serious money. If the device is needed infrequently, then you can save a little and make a unit that will not be inferior to factory models.

The principle of operation of the compressor

Both professional and self-made devices work on the same principle. In a container for storing compressed air, which is called a receiver, an excess pressure level is created. The air itself can be blown into the receiver both automatically and manually.

If you work in manual mode, then it is certainly very cheap in finance, but it will require serious energy costs. You also need to constantly monitor this process. After such work, it is unlikely that you will want to do anything else.

If you use the mechanisms for pumping air, then this will facilitate the process. There are no drawbacks here, you just need to change the oil in the air pump, depending on the regulations.

Further, the compressed air flow passes through the outlet valve of the compressor or in this case the receiver and is directly supplied either to the airbrush, or to the car chamber, or to the pneumatic tool. In general, the principle is very simple, and therefore the simplest working model can be built in a couple of minutes.

Homemade compressor

Let's look at how to make the simplest compressor for painting a car with your own hands. As one of the options, we will try to make a device for painting work from a car chamber. To create, we need a receiver, a supercharger, a spool from a damaged camera, a repair kit, an awl. When everything you need is assembled and prepared for work, you can start assembling.

At the assembly stage, you need to check the tightness of the chamber. To do this, you can use a car pump. Every motorist knows how to do it. If the rubber holds the air pumped into it, you can proceed to the next step.

If air leaks are found, then you can use a repair kit or vulcanize the hole with raw rubber.

At the next stage, in the so-called receiver, it is required to make holes for another spool. It will be the outlet valve. This fitting can be glued using the same pre-stocked repair kit. This valve is connected to the airbrush. The nipple must be unscrewed from the fitting. The compressor circuit provides for the free passage of air. We will not unscrew the nipple in the main spool. He will keep the pressure.

Then, by the method of scientific poke, we will try to determine the required pressure level in our receiver. For this, a spray gun is used. If the paint lays down evenly, without jerks, streaks or anything else, then everything is done correctly. It is desirable to control the amount of excess pressure in the receiver. When you press the airbrush button, the level should not jump.

As you can see, this is the most primitive compressor for painting a car with your own hands. Now you can create masterpieces or just repaint the body.

It is not difficult to assemble this unit, and its usefulness can be seen during various repairs. If you have used for painting before, then you will definitely be able to appreciate all the advantages.

Just remember that in no case should liquid, dust or anything else get into the spray gun and into the camera. In the event of a violation, dust or moisture will mix with the paint, and the work will have to be redone. Then no adjustment of the spray gun will help. It will be more convenient if our camera is fixed on something. This will prevent her from moving across the floor.

This model works great, and it is already quite usable. But even better, with small changes, make the injection system automatic. Next, we will learn how to make the compressor more serious.

Semi-professional equipment

Professionals say that such handicraft equipment has a huge resource and service life, unlike factory models of foreign brands and domestic manufacturers. But this is understandable, because, knowing the scheme of work, if any part fails, it can be easily replaced. Let's see how to make a compressor that can be used professionally.

What is needed for assembly?

So. Here you will need readily available spare parts for the compressor. This is a pressure gauge, as well as a gearbox with a filter. You also need a relay to control the pressure in the chamber, a fuel filter from a car, a water quad with a ¾ internal thread. In addition, you should pick up threaded adapters, car clamps, a motor, a receiver tank, 10w40 oil, a toggle switch for 220 V, brass tubes, and oil-resistant rubber hoses. These compressor parts can easily be found in the garage.

Thick wood will be used as the basis for the unit. You will also need a syringe from the nearest pharmacy, anti-corrosion liquid, fasteners, sealants and FUM tape, paint, a needle file, wheels from an office chair and a filter from the auto power system.

So, knowing the principle of operation of the compressor, it's time to start building. Let's start with the blower.

Engine as supercharger

We will use a compressor from old refrigerators as a motor. Often it already has a built-in starting relay, which in our case is very convenient. This will automatically maintain the desired pressure in the receiver chamber. It is better to use a motor from old Soviet cooling units. They have higher performance compared to imported products.

Preparatory procedures

Feel free to get the executive part out of your old refrigerator. Naturally, you need to clean the part, because over the years the block has managed to acquire centuries of dust, and also, possibly, to rust. After cleaning, you can treat the body with a rust converter to save the block from corrosion. So, the preparation for painting is done.

Change the lubricant in the actuating unit. It is rare that a refrigerator received service according to the regulations. This system is almost completely isolated from environmental influences. Semi-synthetic is suitable for changing the oil. It is no worse than specialized compressor fluids.

Inlet, outlet and oil change

Must have tubes. Two of them are open, one is soldered. Open tubes are used for air inlet and outlet. To find out which handset is the input and which is the output, you can briefly turn on the power. Next, remember which of the tubes releases air.

The refrigerator compressor circuit says that the lubricant needs to be changed through a sealed tube. You should very carefully cut off the end of the tube with a needle file. It is necessary to saw so that the chips do not get inside. Next, the tip must be broken off and drained into some jar of old grease. Then, using a pharmacy syringe, fill in more lubricant than poured out.

In order for the unit to work properly, the lubrication tube must be sealed. A screw of a suitable diameter will help us with this. It must be wrapped with a pre-prepared FUM tape and screwed into a long-suffering pipe.

Next, attach this device to the board using the prepared fasteners. The electronic part is very sensitive to position. Therefore, the top cover of the relay is marked with an arrow. The operating modes will only switch if the setting is correct.

Choosing a container for the receiver

As practice shows, it works best for painting if a used fire extinguisher is used as an air container. These cylinders are good because they contain the necessary margin of safety. In addition, the fire extinguisher is designed for. This choice is also good because various attachments can be placed on the cylinder body. Take, for example, a metal 10-liter cylinder from OU-10. It holds a pressure of 15 MPa and has high strength.

Fire extinguisher preparation

Immediately boldly twist the lock-starter, we will not need it. And you need to screw the adapter into place, having previously wound the FUM tape onto the thread. If the body is rusted, you need to treat the rust with either chemistry or sandpaper.

Outside, in the fight against corrosion, everything is very, very simple. What about corrosion inside? Pour the cleaner into the bottle, and then you need to mix the product very well. Next, screw the cross from the water supply. And don't forget to seal the threaded connections. Now everything is almost ready.

We mount attachments

We almost made a compressor for painting a car with our own hands. To make it convenient to move, the best option is to mount all the nodes and parts on one platform. We have a wooden board. The motor from the refrigerator is already fixed on it, and now you need to place a fire extinguisher-receiver there.

In the plate, it is necessary to make holes for fasteners in advance. The motor from the refrigerator is already fixed with studs and nuts. The fire extinguisher must be placed vertically. To do this, you can use plywood. This will require three sheets.

In the first sheet, cut a hole suitable for the diameter of the balloon. Fix the rest on the plate. Next, fix these plates to the plate along with the sheet with the hole using glue. To make the fire extinguisher conveniently located on the platform, you can make a recess under the bottom. To make our device maneuverable, take out the prepared furniture wheels and screw them onto the platform.

Protection against dust and small debris

Naturally, the equipment must be protected from dust as much as possible. To do this, we will use a car. The filter must be mounted in the air intake.

How to do it? We use a rubber hose. It should tightly compress the autofilter fitting and the compressor inlet pipe from the refrigerator. On the inlet tube, you can not clamp the hose with clamps. There is no high pressure.

Moisture protection

An oil separator must be installed at the outlet. It will not allow liquid or oil particles to get into the system. To do this, you can apply a filter from the diesel power system. The connection is made using the same hose. But here it is already necessary to strengthen the connections with a clamp, because there will be decent pressure at the outlet.

denouement

The diesel filter must be connected to the reducer input. It is necessary to untie the pressure at the inlet and outlet of the refrigeration compressor. To do this, the high pressure outlet of the supercharger must be screwed into the left and right side of the crosspiece.

We fix the pressure gauge

A manometer is fixed at the top entrance of the crosspiece. On it we will perform pressure control. You also need to tighten the adjusting relays. Do not forget that the threads must be sealed.

Relay importance

This device makes it possible to regulate pressure levels over a wide range. It can, if necessary, interrupt the power supply to the refrigeration motor. For these purposes, either PM5 or RDM5 is suitable. Both devices will start the motor if the pressure drops and turn off when it rises. The pressure level is adjusted using the springs on top. So, with the help of a large one we set the minimum levels, and a small one - the maximum limits.

Electricity

To make it all work, we connect the neutral power wire to the relay, and connect the second wire to the refrigeration engine.

Pass the phase wire through the toggle switch to the second contact of the compressor. This will allow you to turn off the power faster. Naturally, after connecting, you need to securely insulate all this.

So we made a compressor for painting a car with our own hands. It remains only to paint, adjust and test it.

Adjustment and first tests

After assembling all this together, you can safely proceed to the first tests. Connect an actuator to the output of the unit. Then plug the cord into the outlet, set the relay to the very minimum and turn on the toggle switch. Look at the pressure gauge. If you are convinced that the relay turns off the motor, you can check the tightness. To do this, use the old-fashioned way with soap.

If everything is fine, then bleed the air from the receiver. When the pressure drops, the relay should start the motor. If everything works, then painting with an airbrush will no longer cause difficulties.

First samples

To test the unit in operation, any unnecessary part will do. There is no need for any surface preparation. It is important to determine the working pressure by trial and error. With the help of experiments, determine the figure at which there is enough pressure for a complete painting without frequent switching on of the motor.

As you can see, it is quite easy to make for painting. This unit can already be fully used for professional activities. The costs will definitely pay off soon. The compressor is needed not only for painting work. It has a very wide range of applications. A semi-automatic system will allow you not to be distracted from work.

Spray guns

In addition to the compressor, airbrushes will also be needed for painting work. To do this, you need to purchase a pneumatic model. A properly selected airbrush will allow you to successfully carry out work. The tool should be selected based on the characteristics of the compressor.

An airbrush for a car should be correctly selected in accordance with the working pressure. If the choice is wrong, the pressure will drop too quickly, and the quality of work will be very low. There are several technologies that are used in this tool. They need to be selected based on the task. For example, modern LVLP technology makes it possible to use paint very economically with a small air consumption, and the surface will be of high quality.

How to set up the spray gun?

High-quality painting is possible only with properly configured equipment. The spray gun setting allows you to change the width of the torch, air pressure, as well as the paint supply.

With the width of the torch, everything is very clear. Maximum width - maximum speed, even overlap. For touch-ups, the flame is reduced, but the air supply is also reduced.

Adjusting the flow of paint is also easy. Many experts open it to the maximum. But the air supply can be problematic. For the correct setting, you will need a compressor, instructions for a specific spray gun. It is necessary to use a sheet of drawing paper and direct a jet from the spray gun at it. If the flame is in the shape of a figure eight, reduce the pressure. If the paint is dripping, add it. Find the best position.

It is possible to carry out high-quality painting of a car in garage conditions. To do this, you will need to arrange a convenient spray booth, as well as be equipped with the necessary tools. Buying expensive equipment for many car owners can not afford, so you have to make a compressor for painting a car with your own hands. This operation is much cheaper.

For the competent manufacture of this device, you will need to familiarize yourself with the theoretical part. Thanks to this preparation, in the process of subsequent work, it will be possible to avoid the appearance of graininess, shagreen or dust particles mixed with paint on the painted surface.

The operation of almost any compressor, factory-made or home-made, is based on the same principle. An increased pressure is formed in the sealed cavity, which is higher than atmospheric pressure, and then it is directed and dosed.

For injection, a mechanical or manual method is used. In the second case, energy savings are obtained, as well as independence from the presence of power supply points near the working area. In the case of automatic air supply to the working cylinder, it will be necessary to control the presence of oil for the air compressor.

Before you make a compressor for painting a car yourself, let's prepare the tools. There is a way in which the working element is a car camera. To do this, select the components according to the list:

• working chamber from a car or truck;
• a pump with a built-in pressure gauge for pressurizing;
• additional nipple for the camera;
• hard awl;
• camera repair kit.

We first check the tightness of the selected chamber. To do this, it is pumped up and lowered into the water. If leaks are found, be sure to get rid of them.

We mark in the free space the point where the installation of the second nipple is supposed. In this place we make a hole with an awl. The fitting must be glued using a repair kit. Through it, a uniform air supply will be ensured.

The initial nipple built into the chamber is necessary to maintain the working pressure at the required level. The performance of the installation is determined by the final result. When the paint is evenly distributed, this indicates correct assembly and sufficient pressure in the container. The pressure gauge built into the pump will help you choose the right parameter.

When such a home-made compressor for painting a car is working, you should try to prevent moisture and small debris from getting inside the cavity. This will ensure maximum cleanliness of the painted surface. It is also desirable to prevent condensation inside the chamber.

advanced compressor

With proper assembly and regular maintenance of the device, a home-made compressor can last much longer than the factory one. With all this, it is unlimited in repair parts, and can also be improved and refined from time to time.

The basis for a more progressive model are the elements of the old refrigerator:

• receiver for compressor;
• pressure gauge 10 atm;
• a relay that provides pressure control inside the compressor;
• adapters with pipe thread;
• gasoline cleaning filter;
• a reducer with the filter protected from moisture and oil;
• water cross with ¾ inch thread;
• electric motor for compressor operation;
• hydraulic hose clamps;
• semi-synthetic oil;
• oil resistant hose;
• copper pipes;
• medical syringe;
• wooden plate;
• rust remover;
• power system filter;
• hardware elements;
• furniture wheels;
• sealant, sealing tape;
• a small file or saw for metal;
• electric switch (220 V).

The advantage of earlier models of refrigerators is the presence of a starting relay. Also positive is the rather powerful pressure that the compressor develops. Using a rust converter, we clean the problem areas on the body and working elements of the unit being prepared.

It is advisable to carry out a small maintenance of the compressor, replacing the oil in it with a semi-synthetic one. Modern oils contain a sufficient amount of additives to ensure long compressor operation. Its design has three nozzles, one of which is hermetically sealed. In the other two, air circulation will be carried out. To determine the direction of flow, you will need to connect the device to the mains.

The sealed pipe hides half the oil. Having bitten off with wire cutters or sawed off its end with a needle file so that the chips do not get inside the cavity, carefully drain the liquid into the prepared container. This will determine the required amount of oil to replace. It must be infused with a syringe of the same volume that was removed through the tube.

After topping up, we plug the hole with a screw or self-tapping screw wrapped around the thread with sealing tape. Now the installation of the entire structure begins on a wooden base or a welded frame from a building profile. Compressors from refrigerators are quite sensitive to position in space. To determine it, there is a special arrow on the case. The correct operation of the entire node depends on this.

A regular foam or powder fire extinguisher is suitable as a container for air. It is advisable to select it so that the cavity is at least 10 ... 12 liters. Usually they are tested to withstand pressure up to 15 ... 20 MPa. To release the cavity, we unscrew the adapter with the locking and starting device.

If areas with corrosion are found on the surface, then it is necessary to eliminate them., preventing the spread of rust, which can lead to through damage. Such phenomena are unacceptable, as they contribute to the depressurization of the container.

A rust converter can be poured inside the cavity and shaken well, then poured and dried. Outside, we fix the water cross.

General installation of the structure

The most convenient option would be the location of all parts on a wooden base. For installation, drilling holes and fixing the elements with bolts and nuts are used. You can also use a sheet of plywood, to which everything is easily attached with self-tapping screws. 360 movable wheels are installed on the bottom plate or frame for greater mobility.

Gasoline coarse filters will help provide sufficient protection against the ingress of fine dirt or moisture. They are usually mounted on the side of the air intake. An inlet tube is placed on this side, which can be held even without clamps, since there is no high pressure in this place.

On the outlet side, you will also need to install a protective filter that will protect the air flow from moisture and oil particles from the compressor. Fuel filters are used as such a blocker. Without clamps, such a knot will not stand.

We will mount an adjusting relay, as well as a pressure gauge to control the pressure, into the output cross. We connect the free plug to the gearbox. Using the relay, it will be possible to adjust the pressure height range in the receiver.

PM5 (RDM5) is used as an actuator. It was originally used in plumbing systems, but since it is a two-pin switch, it will work in our case. One contact goes to the connection with the supercharger, and the second to the “zero” of the 220 V network.

Using the toggle switch, we connect the phase of the network. It will help you quickly, if necessary, turn off the power supply, so as not to run to the outlet for this.

Pressure monitoring

Having collected all the elements together, we need to check the performance of the mechanism. To do this, we connect the device to the mains, and set the relay to the minimum pressure supply. We monitor the pressure gauge readings during system operation.

After checking the relay, you will need to identify possible places of loss of tightness. For this operation, a prepared soap solution is used. It is made thick in the form of gruel. We coat problem areas with a solution on a running compressor. If air bubbles appear, then seal the leak.

During a possible drop in pressure to critical values, you can install additional air pumping with the compressor turned on. After receiving positive results during the test, you can.

Satisfactory pressure for the operation of the system is selected empirically. In this situation, it is necessary to choose the settings so that everything happens at the minimum values ​​​​of the blower drawdown. With this design, you can paint any surface.

Budget compressor option

Building a paint compressor can be quite economical. It can also be based on elements from an old refrigerator, and any airtight cavity is usually used for a container with air:

• Produced oxygen cylinder. It is able to withstand high pressure parameters, but has the disadvantage of a large mass.
• propane tank. It has the same positive qualities as oxygen.
• Fire extinguisher. Models with a volume of 10 liters or more are suitable, as they have a better ability to tolerate high pressure. However, at the exit they have a metric thread.
• Hydraulic accumulator. The cavity has a good volume with sufficient working pressure. Requires some modifications to get rid of the membrane and metric threads.

At the next stage, we combine the receiver with the compressor. It is necessary to provide for maximum compatibility of connectors for connecting a relay capable of turning off the compressor at the right time. You can also use RDM-5.

The pressure gauge is selected with maximum values ​​​​at the level of 10 atm. We select fittings, tees or corners with an inch thread. This will facilitate assembly and ensure maximum air passage through the channels. To accommodate the structure, the use of chipboard is allowed.

As a result, the list of necessary elements will be in the following configuration:

• Prepared compressor;
• Receiver for distribution of air flows;
• Pressure switch connected to the network;
• Pressure gauge up to 10 atm;
• Filter reducer;
• Emergency release valve;
• Transitional threaded elements;
• Sealing elements (tape, paste, etc.);
• Wiring, plugs and on/off elements;
• Hose protecting against moisture and oil;
• Particle board;
• Hardware elements, wheels, gaskets.

If you are afraid of the number of spare parts and the complexity of manufacturing, you can always purchase an inexpensive factory-made compressor.

Mounting the receiver in the form of a hydraulic accumulator will be the easiest, as it is already equipped with the necessary brackets. They can also be used to mount the compressor from above. Get a two-tier design.

As fasteners, it is desirable to use bolts with hooks, passed through pre-drilled holes. This will provide greater structural stability.

It will be possible to reduce the influence of vibrations with the presence of rubber / silicone gaskets used as damping.

With the help of prepared flexible tubes, we connect the compressor outlet and the inlet to the receiver. Be sure to put protective mechanisms in the form of filters. Power is supplied to the switch and relay. The structure must be grounded.