Air compressor: do it yourself from the refrigerator. A complete compressor from the refrigerator Homemade compressor with a receiver

It is not necessary to buy a compressor for painting or pumping up wheels - you can make it yourself from used parts and assemblies taken from old equipment.

We will tell you about structures that are assembled from scrap materials.

In order to make a compressor from used parts and assemblies, you need to prepare well: study the diagram, find on the farm or buy some parts. Let's consider several possible options for self-construction of an air compressor.

Air compressor from refrigerator parts and fire extinguisher

This unit works almost silently. Consider a diagram of the future design and make a list of the necessary units and parts.

1 - a tube for filling oil; 2 - starting relay; 3 - compressor; 4 - copper tubes; 5 - hoses; 6 - diesel filter; 7 - gasoline filter; 8 - air inlet; 9 - pressure switch; 10 - crosspiece; 11 - safety valve; 12 - tee; 13 - receiver from a fire extinguisher; 14 - pressure reducer with a manometer; 15 - moisture oil trap; 16 - wall inlet

Required parts, materials and tools

The main elements are: a motor-compressor from a refrigerator (better than made in the USSR) and a fire extinguisher cylinder, which will be used as a receiver. If they are not available, then a compressor from an inoperative refrigerator can be looked for in repair shops or at metal collection points. A fire extinguisher can be purchased on the secondary market or attracted to the search for acquaintances at work who may have decommissioned OHP, ORP, OU for 10 liters. The fire extinguisher cylinder must be emptied safely.

In addition, you will need:

• pressure gauge (as for a pump, water heater);
• diesel filter;
• filter for a gasoline engine;
• pressure switch;
• electric toggle switch;
• pressure regulator (reducer) with a pressure gauge;
• reinforced hose;
• water taps, tees, adapters, fittings + clamps, hardware;
• materials for creating a frame - metal or wood + furniture wheels;
• safety valve (to relieve excess pressure);
• self-locking pneumatic inlet (for connecting, for example, to an airbrush).

Another viable receiver came from a tubeless car wheel. Extremely budgetary, although not very powerful model.

Receiver from wheel

We invite you to watch a video about this experience from the author of the design.

Many craftsmen know that you can make a compressor from a refrigerator with your own hands! Can . But, few people know exactly how to do it! In this article, we will try to provide a comprehensive answer on how to make a compressor with your own hands, so that everyone can create this equipment at home.

After all, if you look at it, then in essence the air compressor is needed in every garage. With the help of a compressor, you can pump up the wheels without visiting a service station or tire fitting, supply air to a working pneumatic tool, or simply blow off dust from the treated surface. So, consider the installation option for painting.

Factory or homemade compressor

There is a list of specific requirements for a painting station. The main condition is the need for a uniform flow of air, without any impurities. The standard defects that are due to the presence of foreign particles include grit, shagreen or cavities in the enamel coating. In the case of an uneven flow of paint, drips or a matte heel may form.

Of course, if you pay attention to branded air compressors, then such installations are equipped with all the necessary functions for high-quality airbrush operation. The only drawback of such units is their cost.

To save money and at the same time create a functional model that will not be inferior to professional equipment, you need to familiarize yourself with the theoretical information base or watch a video on the topic "a compressor for painting a car with your own hands."

The principle of operation of any model, regardless of whether it is home-made or factory-made, is the same. Excessive pressure builds up in the reservoir. The method of air injection is different (manual, mechanical). In the case of manual feeding, there are significant savings in money, but a lot of energy is consumed. After all, the process requires constant monitoring.

Automatic pumping avoids these disadvantages, except that the oil for the air compressor requires periodic replacement. Thus, there is a uniform supply of air to the switchgear. In theory, this looks extremely simple, so it is possible to create a workable compressor station in a short time.

Do it yourself

So, we choose the manufacture of a painting unit from a conventional car camera. List of required material:

1. Car camera that acts as a receiver;
2. A pump with a pressure gauge that acts as a blower;
3. Chamber nipple;
4. Repair kit;
5. The usual awl.

Now you can start making the compressor station. The chamber must be checked for leaks, for this it must be pumped up. If there are air leaks, it is necessary to solve this problem, either by gluing or by vulcanizing with wet rubber.

After that, in the manufactured receiver using an awl, you need to make a hole. A nipple will be placed here, through which a uniform jet of compressed air will come out.

An additional fitting is attached by gluing. A repair kit will help in solving this problem. Then the fitting is connected to the spray gun. To check how the air flow comes out, you need to unscrew the nipple.

In this case, the native nipple remains, it will serve as a valve and hold excess pressure. Finally, you need to determine the level of pressure by spraying paint on a metal surface. If the enamel lays down evenly, then the installation is working well.

In addition, the pressure value can be checked with a pressure gauge. But, its level even after pressing the aerator key should not be abrupt.

It is not difficult to design a compressor, but after its manufacture, anyone can make sure that repairing or painting a car will become much more effective than it was with a spray can.

Among the last parting words should be attributed to the fact that it is necessary in every possible way to avoid getting into the car camera of water or dust. To prevent these particles from entering the spray gun later, otherwise you will have to paint again.

As a result of correct operation, the created installation will work for a long time, but it is still better to automate the pumping of air.

Semi-professional air blower

Experts have repeatedly made reviews that homemade compressor units have a longer service life. Moreover, the comparison was made with domestic and foreign models.

This, of course, because the installation is made with your own hands. Therefore, we will consider the option of how to make a compressor from a refrigerator, which will not be inferior even to the products of famous companies. So, for its manufacture, the following list of materials is required:

• Compressor receiver;
• Pressure gauge;
• Relay for monitoring the pressure in the compressor;
• Threaded adapters;
• Fuel filter (gasoline);
• Reducer with oil-moisture separating filter;
• Water supply cross with ¾ inch thread;
• Compressor unit motor;
• Clamps are automobile;
• Motor oil (10W40);
• Switch (220 V);
• Oil resistant hose;
• Brass tubes;
• Regular syringe;
• Thick board;
• Compressor rust converter;
• Power system filter (diesel);
• Metal paint;
• Nuts, washers, studs;
• Wheels for furniture;
• Sealant, tape fum;
• File.

Working mechanism

To simplify the procedure, a compressor from an old Soviet-style refrigeration unit can serve as the engine. There is one positive point here, namely the presence of a compressor start relay.

Soviet models outperform their foreign competitors by generating higher pressures. After removing the executive unit, it is necessary to put it in order, freeing it from the build-up of rust.

A rust converter will assist in the treatment of the compressor to avoid further oxidation. Thus, the body of the working motor will be prepared for subsequent painting.

Installation diagram

After completing the introductory part, you can start changing the oil. After all, if you do not bend your heart, then it is not enough which refrigerator managed to undergo regular maintenance or oil changes. However, such a course of events is also quite justified, because in this case the system is completely isolated from atmospheric influences.

So, semi-synthetic oil is fine for this procedure. Moreover, it is no worse than compressor oil, and has a sufficient amount of useful additives.

Go ahead and find 3 tubes on the compressor, 2 of which are open, one is sealed. In our case, open tubes will be used for air circulation (inlet and outlet). To understand how the air moves, you need to energize the compressor for a short time. Then remember or write down which duct draws in air, and which, on the contrary, releases it.

The purpose of the sealed tube is for routine oil changes. Therefore, the closed end should be removed. The file will help us with this, which needs to be cut around the tube. In doing so, care should be taken to prevent swarf from entering the inside of the compressor.

After that, it is necessary to break off the end of the tube and drain the oil into any container in order to establish its volume for subsequent replacement. Then we take the syringe and fill in the semisynthetics, but in a larger volume than was drained.

When the oil is filled, the engine lubrication system must be shut off. This can be done by selecting a screw, after which this screw is wrapped with fum tape and twisted into a tube. It's time to remind you that oil droplets will sometimes seep from the blower outlet air tube.

Therefore, the compressor oil separator comes to the rescue.

When the indicated work is completed, it's time to start assembling the installation. You need to start by strengthening the engine with a starting relay on a wooden base, so that it is in the same position as it was on the frame.

This is necessary due to the sensitivity of the compressor relay to the spatial position. To be more precise, an arrow should be drawn on the top cover. It is important to observe accuracy here, because the correct switching of modes will depend on the installation of the compressor.

Air container

An excellent solution to the problem would be fire extinguisher cylinders. It depends on their ability to withstand high pressure, in addition, the cylinders have a significant margin of safety, perfectly suited as attachments.

So, let's take the OU-10 fire extinguisher as a basis. Its working volume is 10 liters. According to the technical characteristics, the cylinder can withstand a pressure of 15 MPa. Now you need to unscrew the locking and starting device from our workpiece, and then screw in the adapter.

In this case, if traces of corrosion are detected, they must be removed with a rust converter. Of course, external removal is not difficult, but internally it will require patience. Therefore, we pour the transducer inside the container, and shake the contents.

After cleaning, you can screw in the plumbing spider. Thus, two working parts of our compressor unit were prepared.

Assembly of parts

To make it easier to store and move work parts, it is best to place them on the same base. As mentioned earlier, a wooden board is needed, which will serve as the basis for reliable fastening of the engine, as well as the body of the fire extinguisher.

Therefore, we will use threaded rods as an engine mount, which must be threaded into the pre-drilled holes. Of course, in addition to everything, you will need nuts (washers).

Then you need to place the receiver in an upright position, 3 sheets of plywood will come in handy here. In this case, in one sheet you need to make a hole for the balloon. The rest of the sheets are attached with self-tapping screws to the main board and glued to the sheet that holds the receiver.

But, on the eve, you still need to hollow out a recess in the wooden base under the bottom of the receiver. And finally, in order for the structure to be maneuverable, you need to screw the furniture wheels to its base.

After all that has been done, you need to protect the system from possible dust ingress. A gasoline coarse fuel filter will come to the rescue. It will act as an air intake.

The rubber hose and blower inlet tube will be used here. It should be noted that there is low pressure at the inlet of the compressor station, which means that there is no need to strengthen the contact with the help of automobile clamps.

Thus, we have created an inlet filter for the compressor unit. At the outlet of the station, an oil-moisture separator must be installed, which will block the ingress of water particles. The power supply filter will be used here. Due to the increased pressure at the outlet of the compressor station, automobile clamps will be used from this place.

So, the turn came to the oil-moisture separating filter. In this case, it must be connected to the inlet of the reducer, which is needed to decouple the reservoir and the outlet of the blower by pressure. This means that we screw the outlet into the previously prepared crosspiece on the left side, and on the right we screw in a pressure gauge, thanks to which we will be able to control the balloon pressure. On top of the cross, you need to screw in the control relay.

The presence of the control relay will make it possible to set the range of the receiver pressure height, as well as to interrupt the supply circuit in the supercharger in time. When it comes to the actuator, it is recommended to use PM5 (RDM5).

With the help of these devices, the compressor will turn on if the air pressure in the tank falls below the set mark and turn off if the set parameters are exceeded.

The required pressure is set at the relay using two springs. The function of the large spring is to create minimum pressure, while the small spring is responsible for adjusting the upper limit, effectively setting the shutdown limit for the compressor unit.

РМ5 (РДМ5) were originally produced for the purpose of use in the water supply network, in fact, these are ordinary two-contact switches. In our case, one contact is used to connect the 220 V network with zero, while the second contact goes to connect to the supercharger.

We carry out the network phase through a toggle switch to connect to the second input of the compressor station. If there is a toggle switch in the electrical circuit, we will be able to quickly disconnect the system from the network, which will save you from running to the outlet.

Naturally, all connections must be soldered and carefully insulated. After that, you can paint the finished installation and carry out test tests.

Adjusting the pressure

So, after assembling the structure, it is quite natural to check it. To do this, you need to connect a spray gun, or, as an option, a pneumatic gun. Then, without turning on the toggle switch, we connect the plug to the network.

We set the control relay at the minimum pressure, and we supply power to the blower. Do not forget about the pressure gauge, which allows you to control the pressure in the tank. After we were able to make sure that the relay turns off the engine, we need to check the tightness of the connections.

A classic soap solution can help here. If the system passes the tightness test, residual air can be vented from the reservoir chamber. It should be noted that in the event of a pressure drop below the set limits, the relay must start the compressor. In case of serviceability of all systems, it is possible to start painting any part.

At the same time, you should not load yourself with preliminary metal processing. It is important for us to set the pressure required for painting the product.

Such experimentation will give us the opportunity to determine the atmospheric value so that the coloring of any product occurs in an even layer. In addition, it is very important that this entire process takes place with a minimum amount of blower activation.

Thus, you can summarize the results. Car compressor manufacturing, lifting occupation for every car enthusiast.

Of course, it is difficult to argue with the fact that the second version is more complicated and will take more time to manufacture, but thanks to the automatic pressure control system, as well as the presence of a supercharger start-up, working with such equipment will become one continuous pleasure.

Plus, you no longer need to control the receiver's camera. Such a station will allow painting a car, a fence in a village or a garage door.

For the continuous operation of the created compressor, it will be necessary to carry out periodic routine maintenance. . You can use a syringe to drain the oil. In this case, we unscrew the filler hole, put a hose on the tube and pump out the mining. Also, fresh oil can be pumped in with a syringe. Filters are changed as needed, including in the event of a decrease in the speed of filling the tank chamber.

Make or buy

Today the market is filled with a variety of compressor equipment. There are piston installations, vibration units, screw stations and other devices that are produced for different purposes. Ready-made installations can be purchased at auto parts stores or on specialized sites.

A large assortment can make it difficult to choose the right product. But be that as it may, if you decide to buy a ready-made station, focus on studying the technical parameters, cost and reviews.

To obtain a quality guarantee, it is better to purchase equipment of well-known brands, however, an expensive product will justify itself in the case of a professional car repair business. Little-known products can let you down, so it's best not to risk it.

Often, low-quality materials are installed in budget options. There are frequent cases of failure of installations due to instant breakdowns of individual parts, while warranty repairs will take a lot of time.

As already mentioned, hand-made assembly is often more reliable than factory assembly. A separate plus is the technical parameters. For example, according to statistics, compressors from refrigerators serve for decades. Regarding the fire extinguisher, we can say that this product has a tenfold safety margin.

Therefore, it is better not to buy what you are unsure of. In addition, having studied the current material, you know what to make a compressor with your own hands, you can even in a domestic environment. A well-made device will be the envy of your garage neighbors.

Another story

Let's start by formalizing the technical requirements for the fruit of hand-written engineering. Let's say it all started with the purchase of a new double-action airbrush. Therefore, the issue of manufacturing a compressor unit with a receiver has become extremely necessary.

A double-action airbrush has the ability to control the flow of air as well as to close it and open the air duct. In Europe, this device is used with a separate compressed air cylinder. So, a compressor with a reservoir serves as a container to collect air, and an airbrush uses this air.

Of course, the main component is the compressor. Here an old refrigerator comes to the rescue, from which you can remove an excellent compressor. To do this, you can go through the sites that sell refrigeration equipment.

We decide on the price and order delivery, but before that we also need to write down the name of the manufacturer's company and visit the website. So, in our case, the manufacturer is Danfoss. On the company's website, we download the technical description of the compressor.

Next, consider such an option as a receiver for a compressor with your own hands. Here, of course, you need a tank that was made to contain gases or can withstand high pressure. Optimally, if such a container meets the requirements of GOST. Therefore, we immediately exclude containers, such as a plastic canister or bottle. Consider the options for tanks:

1. Carbon dioxide fire extinguisher. Withstands pressure - 10 atmospheres. Capacity - 3 l / 5 l / 10 l. Cons - metric thread at the entrance.
2. Hydroaccumulator. Good container volume, with low operating pressure. Convenient thread at the entrance. Cons - needs fine-tuning, since, from the inside, it is divided into a membrane that contains carbon dioxide. The membrane must be removed.
3. Oxygen balloon. Withstands high pressure. Cons - only extremely heavy models are available.
4. Propane bottle. In general, it is similar to a fire extinguisher, but the manufacturer does not recommend their use for compressed air.

Connecting links

After we have decided on the compressor and have chosen a suitable product for the receiver, the next step is to combine them. In addition, you need to solve the problem of air flow to the airbrush.

You can start with a unit that is attached directly to the receiver and will provide air distribution. It should be remembered that the key factor is its compatibility with the receiver connector. Next, we pay attention to the pressure switch, which will ensure that the compressor is turned off and on.

The best option for a relay would be RDM-5, which is used for plumbing systems. This model is widely available commercially, and the good thing is that its connector is designed for an external inch thread.

Then we determine the pressure indication in the receiver. For this we need a 10 atmospheres pressure gauge, it also has a suitable connection size. And we also need a static device.

Next, we are dealing with the air preparation unit. The hose that leads to the airbrush must be pressurized. Accordingly, there is a need for a reducer with a pressure control limit of up to 10 atmospheres, and it is desirable that a pressure gauge and an oil separator filter be attached to it.

With the help of a pressure gauge, we will control the pressure, and the filter will ensure that particles of compressor oil do not enter from the receiver. But, it should not be confused with a lubricator filter, which performs a diametrically opposite function.

Let's continue collecting materials, and it's time to prepare fittings, bends, tees. We take an inch as our base size. To determine the quantity, you need a diagram of the air distribution and preparation unit.

We also need external and internal adapters. If you wish, you can make a schematic diagram of how to make a compressor. The next stage is the placement of the finished structure. As an option, chipboard slabs may be suitable.

Of course, in order not to use foul language while moving the station around the workshop, it is advisable to immediately resolve the issue with the roller legs. Any furniture store will gladly sell them to you. To save space, you can make a two-story structure. However, long bolts may be needed. So, we summarize the planning stage with a list of components:

• Compressor;
• Receiver;
• Pressure switch;
• Pressure gauge;
• Filter reducer;
• Emergency valve;
• Fittings, adapters;
• Plumbing gaskets, fum tape, sealant;
• Cables, switch, plug;
• Flexible oil resistant hose;
• Chipboard sheet
• Roller feet, bolts, nuts, washers and tools.

We start assembling

Dismantling the extinguisher assembly and welding on the adapter fitting is ideal. An alternative way is to unscrew part of the valve, leaving the internal mechanics and removing the control element, then screw an adapter with an inch female thread to one outlet, and an adapter from 1 to 38 to the other.

Using an adjustable wrench, we twist the adapters according to the diagram. Next, we mount a reducer, a pressure gauge, a pressure switch and an adapter for a flexible hose.

The next step is to screw the wheels to the chipboard sheet. Since the structure will be two-tier, you need to drill holes for the studs. After that, we put a fire extinguisher in its place.

In the case of using a hydraulic accumulator, the assembly diagram is even simpler, since it has brackets at the top and bottom. Therefore, the lower mounts are screwed to the base, and the upper ones are used to install the compressor.

In our case, the second floor needs to be built. For this, markings are made, holes are drilled, and the upper and lower floors are bolted together. After that, a compressor is installed on the second floor. Silicone pads are suitable to reduce vibration.

When installing the compressor, we put washers. We fasten the air distribution module to the tank. Using a hose and clamps, we tightly connect the compressor outlet and the inlet of the air preparation unit.

Now it's time to work with the wiring diagram. Jumper setting would be appropriate. Also, protective elements will not interfere. The connection line must go through the relay and the switch. The connection itself will proceed as follows.

From the plug, the phase wire goes to the switch. Then it is connected to the desired relay terminal. In the absence of a grounding wire, we start a neutral wire to the grounding terminal of the relay.

Already from the relay, the phase wire and the neutral wire go to the starting device of the compressor station drive and are connected according to the diagram to the required terminals. Next, on the terminal block of the starting device, we install a jumper by soldering.

It will connect the windings to the phase. Cables can be wrapped in plastic ties. We check and run the installation. Then we paint it.

Do you want to know everything about car painting? Read more useful articles:

• ... All to the point.
• ... These tips are important.
• ... Useful if you want to buy a car.

A private house or garage requires compressed air. But the main problem is that equipment capable of providing the required amount has a rather high cost. At the same time, if the master is not professionally engaged in such work, it makes no sense to spend a lot of money, which means that you need to look for cheaper options for resolving the issue. One of these is making an air compressor with your own hands from scrap materials. This is exactly what will be discussed in today's article.

PHOTO: drive2.ru

The main unit of such equipment is a blower, which consists of an electric motor and pistons. However, it should be noted right away that compressors can be designed for different purposes. For example, an automobile tire inflation device is also called a compressor, but it cannot be used to supply air to a spray gun. The thing is that with such a device, air is supplied unevenly, which is unacceptable when painting surfaces. For uniform supply to the spray gun, the device is equipped with a special reservoir - a receiver.

PHOTO: drive2.ru

Do-it-yourself preparation for making an air compressor

Work on the manufacture of a homemade compressor with your own hands begins with the main unit - a blower. Therefore, first of all, you should decide what will serve as its base. The supercharger can be dismantled not only from various household appliances that have served their time, but also from the engines of some cars.

PHOTO: drive2.ru

Many craftsmen who are professionally engaged in airbrushing or other work that require compressed air in small rooms, give preference to do-it-yourself 220 V electric air compressors. This is due to their quieter (in comparison with the factory versions) operation.

PHOTO: drive2.ru

Receiver for a compressor with your own hands: what to make it from

The simplest option here would be to use a tubeless wheel from a car, but it is worth remembering that the drive after the upgrade will be unsuitable for travel. But such a homemade receiver for a compressor is as simple as possible to manufacture, and therefore more acceptable for small amounts of work, such as airbrushing.

PHOTO: krsk.au.ru

If a larger volume of air is required, it is best to use a fire extinguisher or an old gas cylinder as a receiver when making a compressor with your own hands.

Blower, pressure gauge and other parts

If you plan to use a powerful blower dismantled from old equipment, you must purchase a pressure gauge and an emergency valve that will not allow the pressure in the receiver to rise above the allowable value. As for the simplest compressor from the old wheel, then an automobile device powered by a cigarette lighter and used to inflate tires is quite suitable here. However, even such a supercharger can create excessive pressure, which will lead to tire rupture. This situation is very dangerous and fraught with injuries, sometimes incompatible with life. Therefore, the emergency valve must never be forgotten.

PHOTO: drive2.ru

Consider an example of a simple compressor based on a car electric pump and a tubeless wheel as a receiver.

How to make a simple DIY compressor

For work, you will need to purchase an emergency valve and a pumping union (nipple, spool, "nipple"). An additional hole must be drilled in the rim for it, as for the emergency valve. Further, the pumping union and the valve are installed in their place, the wheel is assembled. It remains to connect an automobile electric pump to one of the pumping fittings, and to the second a hose outlet to a spray gun or airbrush. Now, after filling the wheel with air, a handmade mini-compressor can be used for its intended purpose.

PHOTO: eckonom.ru

Making compressors with your own hands based on various devices

Homemade compressors can be made using parts from a refrigerator or vacuum cleaner as a base. Such devices, in their manufacture, will not require large expenditures of labor, and also will not consume a lot of electricity. If the master needs a more powerful device, then for the manufacture of a compressor with his own hands, you can use equipment, for example, from a ZIL 130 car, KamAZ or another machine in whose systems compressed air is used.

PHOTO: krsk.au.ru

It is worth in general terms to understand the manufacture of such devices.

How to make a compressor from an old refrigerator

The process of making an air compressor from a refrigerator with your own hands is extremely simple. This will require:

• receiver;
• filter and moisture-oil separator;
• reducer with pressure gauge;
• the compressor itself from the refrigerator, which is dismantled along with the relay;
• safety (emergency valve).

PHOTO: aredi.ru

Air compressor device diagram

For a better understanding of how such a device is assembled, you can take a look at the schematic drawing below. However, the author of this figure made one of the main mistakes of a beginner. It was in order to show it that the Homius editors cited this image as an example.

PHOTO: tehnika.expert

As you can see, the author suggests installing a filter between the receiver and the compressor, which is not recommended. The fact is that when the pressure rises, the plastic case can simply break. An oil-moisture separator should be located in this place. The filter itself is mounted on the compressor tube, through which air is sucked in.

PHOTO: drive2.ru

Also, the diagram does not indicate the emergency valve, which should relieve excess pressure. It is best to install it on the receiver itself.

PHOTO: drive2.ru

How to make a compressor from a vacuum cleaner: is it possible

Many novice craftsmen, when they first hear about the possibility of making a compressor from an old vacuum cleaner, begin to ask questions about how the receiver is connected to it. However, this is all from the series "I heard the ringing, but does not know where it is." The fact is that the name "compressor" is difficult to attribute to such a device. Rather, it is a spray bottle from which you should not expect much. Although, if we talk about the possibility of whitewashing the walls in the cellar or other similar works, this device can greatly facilitate the work. Such attachments, which were put on an ordinary glass jar, came with Soviet vacuum cleaners, and now it is much easier to order them on Chinese resources or purchase them from hand than to make them yourself.

PHOTO: film.ua

PHOTO: starina.ru

Making a compressor for an aquarium with your own hands

Such devices are quite popular among consumers. But you should immediately make a reservation - there is practically no sense in such work. The cost of such equipment on the Russian market is minimal, but it can take a lot of time. In addition, some parts still have to be purchased. Therefore, you should first think about whether it is necessary to start such a job?

PHOTO: seaforum.aqualogo.ru

Advice! Before you start making any device with your own hands, you need to calculate whether there will be a benefit from such work, "is the game worth the candle."

Compressor for painting a car: how to make it yourself

The most popular of all hand-made compressors are equipment for painting a car or any other parts and mechanisms. In addition to a durable receiver, another blower is required here, which will fill the container with air much faster than refrigeration equipment. Such a device is best made from a ready-made automobile compressor by connecting a 220 or 380 V electric motor to it as a drive.

PHOTO: compressortyt.ru

Scheme and order of assembly of a reciprocating compressor

If we consider a schematic representation of such a compressor, it becomes clear that there is nothing super complicated in it. The main thing is not to forget to include in it a filter with a rigid body that can withstand the pressurized pressure. It is installed at the outlet of the receiver in front of the air supply hose to the spray gun.

PHOTO: samodelkindrug.ru

Many do not understand the purpose of this element, considering it completely unnecessary, but this opinion is erroneous. The fact is that the air in the receiver is in a compressed state, and a change in the density of any substance, as you know, also changes its temperature. As a result of the compression and subsequent release of air and the resulting temperature change, condensation occurs, which can get into the paint together, which will certainly affect the quality of the final result. The filter excludes this possibility.

PHOTO: master-hauze.ru

The nuances of assembling a homemade compressor for painting a car

The main concern here is the strength of the hoses and the tightness of the connections. Therefore, it is recommended to use copper pipes to transfer air from the blower to the receiver and then to the filter. From the filter to the spray gun itself, an oxygen hose is optimal. It is reinforced with fiberglass, and therefore has not only the necessary flexibility, but also increased strength.

PHOTO: sharx.org

Quite interesting for making a compressor with your own hands is the option of using equipment from the Ikarus bus and a gas cylinder, which can be found in the picture below.

PHOTO: drive2.ru

Routine work before starting the compressor

Having assembled a compressor for a spray gun or other work with your own hands, it should be tested. However, before this, as well as afterwards, before each launch, certain actions should be performed, namely:

• check the tightness and reliability of all connections;
• visually inspect hoses and pipes for cracks or breaks.

PHOTO: sharx.org

After the compressor motor has started, it is necessary to check the setting of the reducer on the pressure gauge. The answer to the question of how to adjust the compressor to the desired pressure is not difficult. It is set using a regulator installed on the pressure gauge by turning the handle to the right and left. And the maximum air pressure in the compressor receiver from the engine is regulated by the emergency valve, which is triggered when the permissible threshold is exceeded.

Compressors have recently gained popularity among DIY enthusiasts. They are made on the basis of almost any engine, calculating the power of the base unit depending on the number of consumers. For home workshops, home-made compressor units, made by hand, are in demand.
Refrigerator compressors often remain operational after a breakdown or obsolescence of the refrigerator itself. They are weak, but unpretentious in work. And many of them make quite decent homemade installations. Let's and we'll see how you can do it yourself.

Parts and materials

Required details:

• 11 kg propane cylinder;
• 1/2 ”female threaded coupling with plug;
• Metal plates, width - 3-4 cm, thickness - 2-4 mm;
• Two wheels with a mounting platform;
• Refrigeration compressor from the refrigerator;
• 1/4 inch adapter;
• Brass check valve connector;
• Copper pipe connector ¼ "- 2 pcs;
• Compressor pressure control equipment;
• Bolts, screws, nuts, fumlenta.

Instruments:

• Welding inverter;
• Screwdriver or drill;
• Titanium coated metal cutters;
• Turbine or drill with abrasive nozzles;
• Metal brush;
• Roller for copper pipes;
• Adjustable wrenches, pliers.

  We collect the compressor

  Step one - preparing the receiver

  Rinse the empty LPG bottle thoroughly with water. It is very important to remove all residues of an explosive gas mixture in this way.
  

  

  
  

  

  
  In the end hole of the cylinder we overlap the adapter by 1/4 inch. We weld it on all sides with welding, and plug it with a screw.
  

  

  
  

  

  
  

  

  
  We put the receiver on wheels and support. To do this, we take pieces of metal plates, bend them at an angle and weld them onto the body from the bottom side. We weld wheels with a mounting platform to the corners. In the front part of the receiver we mount a support bracket.
  

  

  
  

  

  
  

  

  Step two - mount the compressor

  On top of the receiver, we expose the mounting frames for the compressor made of metal plates. We check their position with a bubble level, and scald. We put the compressor on the hold-down bolts through rubber shock-absorbing gaskets. For this type of compressor, only one branch will be involved, through which air is pumped into the receiver. The other two, sucking in air, will remain intact.
  

  

  
  

  

  
  

  

  Step three - fix the check valve and adapter to the equipment

  We choose a cutter for metal that is suitable in diameter, and we make a hole in the body for the coupling with a screwdriver or drill. If there are protruding shapes on the body of the coupling, we grind them with a drill (you can use a regular electric grinder or a grinder with a grinding disc for this).
  

  

  
  

  

  
  We put the sleeve in the hole and scald it around the circumference. Its internal thread must match the pitch and diameter of the seating thread on the check valve.
  

  

  
  

  

  
  We use brass check valve for small compressors. We plug the outlet for the release of pressure with a suitable bolt, since a drain valve is already provided on the control assembly.
  

  

  
  

  

  
  

  

  
  To install a pressure switch or a pressure switch with all control equipment, we mount another 1/4 inch adapter. We make a hole for it in the center of the receiver, not far from the compressor.
  

  

  
  

  

  
  

  

  
  We twist the check valve with an adapter 1/2 inch.
  

  

  
  

  

  
  

  

  
  We connect the outlet of the compressor cylinder and the check valve with a copper pipe. To do this, we flare the ends of the copper pipes with a special tool, and connect them with brass threaded adapters. We tighten the connection with adjustable wrenches.
  

  

  
  

  

  
  

  

  
  

  

  Step four - install the control equipment

  The assembly of the control equipment consists of a pressure switch (pressure switch) with a control sensor, a safety valve or pressure relief valve, an adapter-coupling with an external thread and several taps and pressure gauges.
  

  

  
  First of all, we mount the pressure switch. It must be raised slightly to the level of the compressor. We use an extension sleeve with an external thread, and screw the relay through a sealing fumule.
  

  

  
  

  

  
  We install a pressure regulation sensor with manometers through the adapter. We complete the assembly with a pressure relief valve and two taps for the hose outlets.
  

  

  
  

  

  
  

  

  
  

  

  
  

  

  Step five - connect the electrics

  Using a screwdriver, disassemble the pressure switch housing, opening access to the contacts. We bring a 3-core cable to the contact group, and distribute each of the wires according to the connection diagram (including grounding).
  

  

  
  

  

  
  

  

  
  

  

  
  

  

  
  In the same way, we make the supply cable connection, equipped with a plug for a power outlet. We screw the relay cover back to its place.
  

  

  
  

  

  Step six - revision and test run

  To carry the compressor unit, we attach a special handle to the compressor frames. We make it from scraps of a profile square and round pipe. We attach it to the hold-down bolts and paint it in the color of the compressor.
  

  

  
  

  

  
  We connect the unit to a 220 V network and check its performance. According to the author, to obtain a pressure of 90 psi or 6 atm, this compressor needs 10 minutes. With the help of a control sensor, the activation of the compressor after a drop in pressure is also controlled from a certain value displayed on the pressure gauge. In his case, the author set up the installation so that the compressor would turn on again from 60 psi or 4 atm.
  

  

  
  

  

  
  

  

  
  The last operation remains - an oil change. This is an important part of the maintenance of such installations, because they do not provide an inspection window. And without oil, such machines can work for a very short time.
  We unscrew the drain bolt at the bottom of the compressor, and pour the mining into the bottle. Turning the compressor on its side, fill in some clean oil, and screw the cap back on. Now everything is in order, you can use our compressor unit!
  

  

An air compressor is a device that sprays paint. It is commonly used in workshops and garages for painting cars or inflating 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 ready-made 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 car 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, the frequent use of simple devices is not resorted to due to 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. Quite powerful, but not too efficient compressor slowly fills the bottle. 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. Such a device is often used to supply air to an aquarium.

Functional homemade compressor

Unlike machines that are made of car accessories, the compressor from the refrigerator runs continuously. This is due to its good power and performance. In addition, in terms of quality, it is not worse 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 will 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. For this, a fire extinguisher or gas cylinder is suitable, which must 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 high performance... As a compressor, an internal combustion engine is used here, 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 apply 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 making the device yourself, 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 is accidentally bursting.
• 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 you are willing to spend on its manufacture. But do not forget that the device must meet technical safety requirements.