How to assemble a powerful compressor yourself. How to make an air compressor with your own hands: design options. Compressors using any unnecessary things as receivers

An additional advantage is that such a device can be used at home, because it makes little noise. In fact, this is the same refrigerator, only without unnecessary body parts.
Compressors recommended for order are presented below:

Description and characteristics

CALIBER KMK-800/9

Compressor type - piston oil

Engine type - electric

Power - 800 W

Max. compressor capacity - 110 l / min

Min. pressure - 0.2 bar

Max. pressure - 8 bar

Receiver volume - 9 l

Drive (type) - direct

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

Compressed air is the true assistant of a true master

There is always a use for an air compressor in a garage: from the banal blowing off of dust from abrasive surfaces to creating excessive pressure in pneumatic tools. A large part of the compressor's working life is spent on painting a car. And this imposes certain requirements on the generated air flow.

It should flow strictly evenly and not have any impurities in the form of water droplets, oil or solid suspended particles. Defects such as graininess, shagreen leather and cavities on a freshly applied paintwork are precisely due to the ingress of foreign particles into the jet. Leaks of paint and matte stains on the enamel occur when the mixture flows unevenly.

Brand-name air compressors from the manufacturer have all the features for perfect airbrush performance, but they cost a lot of money. You can save money and create a functional model that is not inferior to professional ones on your own, having studied theoretical information and watching the video material "do-it-yourself compressor" as a guide. The principle of operation of all models, both homemade and professional, is quite simple and is as follows. A device for storing compressed air called a “receiver” is pressurized. Air can be injected both manually and mechanically.

With manual feeding, financial resources are saved, but a lot of effort and energy is spent on controlling the process. With automatic injection, all these drawbacks 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 with 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 of the options would be to make a compressor for painting from a used car camera. For manufacturing you will need:

• The receiver is a car camera. It is possible with a tire, it is possible without it
• Supercharger - car pump with pressure gauge
• Nipple from a defective 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 pumping it up with a pump. If the balloon holds air, then everything is fine, and you can proceed to the next stage. If there are leaks, localize the damage and seal it or vulcanize it 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 come out. We glue the additional fitting with 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 as a valve, keeping the excess pressure.

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

It is not difficult to assemble such a compressor model, but you will immediately be convinced of the effectiveness of repairs using a compressor, rather than spray paint cans. The main thing is to follow the rule - moisture or dust should not get into the car camera, and, therefore, and then into the spray gun. Otherwise, they will mix with the car enamel, and all 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 DIY painting

According to experts, homemade 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. Let's consider how to make an air compressor that is not inferior to the products of well-known companies from readily available materials that we need according to the list below:

• Pressure gauge
• Gearbox with oil-moisture separating filter
• Pressure control relay
• Petrol fuel filter
• Water supply cross (four-piece) with three-quarter internal thread
• Threaded adapters
• Car clamps
• Compressor motor
• Receiver
• Semi-synthetic motor oil viscosity 10W40
• Toggle switch for 220 volts
• Brass tubes
• Oil resistant hose
• Thick base board
• Pharmacy syringe
• Rust converter
• Studs, nuts, washers
• Sealant, fum tape
• Metal paint
• File
• Furniture wheels
• Diesel Engine Power Filter

Finding all the components is easy, starting with the heart of the entire system - the air blower.

Engine - automatic compressor actuator

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

After pulling the executive unit out of the dilapidated refrigerator, clean it from accumulated dirt and rust. Then treat with a rust converter to prevent further oxidation. This will prepare the engine body for further painting.

The next step is to 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. Semi-synthetic motor oil can be used, it is in no way inferior to compressor oil and, in addition, it has many useful additives.

The compressor has three tubes - 2 open and one sealed. The open ends are for air circulation, one of the tubes is inlet, the other is outlet. To determine which way the air is moving, briefly apply power to the compressor. And remember which duct is drawing in air and which is releasing.

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 for replacement. And we fill in semisynthetics in a little more with a syringe.

Then the engine lubrication system must be shut off. Why, picking up a screw of the appropriate size, wrap the fum with tape for tightness, screw it into the tube. The supercharger from the refrigerator tends to sweat with grease - that is, there are oil droplets in the outlet air stream. They will be delayed by the oil / water separator for the compressor. With our own hands, in the future, we fasten the engine with a starting relay on a wooden base in 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 when correct installation the mode switching process will be correct.

Compressed air tank

Fire extinguisher cylinders are best suited for storing compressed air. They are designed for high pressure, have a large margin of safety and are ideal for installation attachments... Let us consider the metal body 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 locking and starting device (ZPU) from the future receiver and in its place we screw in the adapter, onto 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 you will have to tinker a little with the inner surface. To do this, fill the inside of the container with a rust-cleaning agent according to the instructions and thoroughly shake the contents. Then we screw in the plumbing 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 stage.

Installation of device parts

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

We fix the compressor motor using threaded rods threaded in advance drilled holes, and nuts with washers. We place the receiver vertically, using three sheets of plywood to fix it, in one of which we cut a hole for the cylinder.

The other two, using 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 gouge a recess corresponding to the size. For maneuverability, we screw furniture fittings wheels to our base. Then we perform the following operations:

Now all that remains is to paint the entire compressor and proceed to field testing.

We regulate the pressure in the receiver chamber

Having assembled the structure, you should check its performance. We connect a spray gun or a tire inflation gun to the compressor outlet. After that, with the toggle switch off, turn on the plug into the network. We set the control relay to minimum pressure and then supply power to the blower. The pressure created in the receiver is controlled using a pressure gauge. 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 easily done with a soapy solution.

After making sure that the compressed air does not leave the system, we bleed it out of the receiver chamber. As soon as the pressure in the cylinder drops below the set mark, the relay should trip and start the compressor. If everything is working properly, you can try to paint some unnecessary part. 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 will be required to paint the product. Experimentally, we determine the value in atmospheres at which the excess pressure is enough to paint the entire part in an even 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 all of it will pay off during further operation. The system of automatic pressure control and start-up of the blower 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 doors.

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 change and timely replacement of filter elements. Since we securely fixed the engine on the base, there is no point in unscrewing it. We will use a syringe to drain the oil. Having unscrewed the screw closing the filler hole, we put the hose tightly on the tube and pump out the mining. We also pump fresh engine oil using a syringe. With filters, everything is easier - we change them as they become dirty and the speed of filling the receiver chamber decreases.

An alternative choice - do it yourself or buy finished products?

Today, the market for air compressor offerings abounds in variety. Reciprocating, vibrating, screw and many other classes of these devices are produced for various purposes. Ready-made compressors can be bought in stores household appliances, auto parts, on specialized sites. The variety of products offered is so great that it will take a long time to select the required product. If you decide to purchase a ready-made device, carefully study 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 only pays off if you plan to do car repair professionally. Choosing a little-known product is fraught with unnecessary risks. Cheap models sin with low-quality materials. It often happens that engine parts fly out instantly, and repairs under warranty take several months.

From the standpoint of reliability, hand-made assembly wins in many respects. First, according to statistics, compressors in refrigerators have been operating for decades. And the old refrigerator is thrown away not because of a broken engine, but because of refrigerant leakage or corrosion of the walls and bottom. And there is nothing to say about a fire extinguisher - they are made with a tenfold safety factor, 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 in a domestic environment. A well-made and well-functioning device will not only delight the owner, but will also become the envy of familiar motorists.

Air compressor is a device that sprays paint. It is commonly used in workshops and garages to paint cars or inflate wheels. You can purchase such equipment in a specialized store or make it yourself. Unlike factory models, DIY equipment can be more efficient and last much longer. In addition, in terms of financial costs, self-production will be cheaper.

Using an accessory from a car, you can make a compressor of a simple design. This is a finished electrical appliance - wheel inflator... The compressor has two positive properties:

• Power. The device is capable of creating high pressure up to 5-6 atmospheres, without unnecessary load on the engine. This is the main advantage of car devices. But it will take about 10 minutes to pump up the wheels. Therefore, work is done intermittently, otherwise cheap devices may overheat during this time. The reason is the low performance of automobile compressors.
• Performance. For a unit of time, the device is capable of delivering air quickly and in large quantities. Due to its high performance, the container fills up faster, and the direct use of compressed air increases the flow from the nozzle.

A high-speed engine and a device with a volumetric piston system will help to combine power and performance. To prevent the equipment from stopping during overheating, it is necessary to create additional cooling of the cylinders. Sometimes turbines are used for the working unit. In everyday life to frequent use simple apparatus do not resort because of their high cost. In order not to choose between power and performance, use a receiver.

The receiver is a storage capacity... For industrial devices, a steel cylinder is used as a receiver. A rather powerful, but not very efficient compressor slowly fills the cylinder. In a short period of time, it is possible to supply a volumetric air flow from the receiver, but only when sufficient pressure appears. After supplying air, it must restore pressure. All devices work according to this principle. For a compressor with low power, an electric motor from a toy is suitable. This device is often used to supply air to an aquarium.

Functional homemade compressor

Unlike devices that are made of car accessories, the compressor from the refrigerator runs continuously. This is due to its good power and performance. In addition, it is not worse in quality than the factory models. And if there is an opportunity to get the components for free, then the money for the manufacture of such a device will take a minimum. The device is designed for painting and blowing, tire fitting, perfectly ensures the operation of pneumatic tools. For the manufacture of a compressor under a voltage of 220 V you need the following details:

1. Motor-compressor from an old refrigerator.
2. Tees, oil filling pipe, hoses, fittings, wall inlets.
3. A reducer that will monitor the pressure.
4. Two pressure gauges.
5. Receiver. A fire extinguisher or gas bottlewhich should be completely empty. You can weld a homemade container from sheet iron and a thick pipe.
6. Air filter.
7. Butter.
8. Emergency valve.
9. Start relay and pressure switch.
10. Metal paint.
11. Fum tape, hacksaw and engine oil.
12. Key and syringe.

Compressor assembly consists of several stages:

High power compressor

If the previous version of the compressor is not powerful enough for you, then there are devices with more high pressure and great performance... An internal combustion engine is used here as a compressor, the crankshaft of which begins to work not from the combustion of fuel, but from the reverse process. In this case, the piston group of the device has a large margin of safety. An electric motor with a power of 3 kW or more is used as a drive, which can be purchased at a low cost. Or use a working motor by removing the ignition and intake system, exhaust, starter group and gearbox.

This apparatus is capable of creating a pressure of 10 atmospheres. Very noisy.

Medium Power Air Compressor

From a gas cylinder or fire extinguisher a medium power air compressor is created. To do this, connect an old fire extinguisher (balloon) and a powerful autocompressor for pumping the wheels. When self-production apparatus, the following rules must be observed:

• A container with mechanical damage and corrosive deposits must not be used.
• The structure must be well fixed.
• Steel lathing is required. This is necessary if the receiver accidentally bursts.
• It is necessary to provide for a pressure reserve. If you plan to increase the pressure to 5 atmospheres, then its strength should be from 10 atmospheres.
• In order for the compressor to automatically shut off when the pressure reaches a maximum, an emergency shutdown sensor is installed. Alternatively, a mechanical valve should be installed, which, if necessary, will make an emergency release of pressure.
• Do not leave the device with high pressure for a long time if it is used in rare cases. To maintain tightness, 0.5 atmospheres is enough.

Do not neglect safety precautions: do not forget about the installation of emergency sensors. An over-pumped wheel will simply burst, and if a steel cylinder explodes, you can get severe injuries.

Making a compressor with your own hands is easy... Its design can be simple or complex, the main thing is what it is intended for and how much money you are willing to spend on its manufacture. But do not forget that the device must meet technical safety requirements.