What makes the air compressor do it yourself. Compressors with their own hands from the refrigerator - algorithm of action and all about homemade compressors. Vacuum pump with hands from the refrigerator compressor

The car is a device for mechanical compression of gases, which forms air pressure at the outlet, greater atmospheric value. The bent air in the combustion chamber of the engine, the compressor increases the power of the engine by increasing the efficiency of the fuel combustion. The fuel mixture with a working discharger contains more air, due to the more easier it is ignited and emits more energy during combustion. In the course of the research it was found that the engine adds the last 46% of power and 30% torque - this is so important this device!

This device is used as pneumatic tools

The air compressor is installed not only in Municipal cars - this equipment is used as a nutrition of pneumatic tools, in industry and other industries. The main operational characteristics of the air compressor are operating pressure and performance in air liters per minute.

The following types of air compressors are distinguished:

Piston. Device with direct transmission effort. During the engine operation, the piston moves along the cylinder and compresses the air that enters the system. There are oil and oil-free piston blowers, the latter are widely used to power the spheres in painting. Air two-position compressors are used for industrial purposes due to high performance.
Rotor. Transfer of engine effort occurs with the belt. Screws with rotating blades compress air inside the device and create. Rotary equipment is characterized by high performance, good efficiency, low noise and vibrations during operation. Air type oil is used economically and does not go into compressible air. Special distribution in production received 380 V.

The supercharger can operate autonomously or using a receiver that provides a smooth supply of compressed air into the system. The air compressor without a receiver is less than the cost and sizes, but more susceptible to breakage.

Is it possible to do it yourself?

Make an air compressor to the engine yourself without everyone, besides, the introduction of modifications not provided for by the automotive manufacturer may unpredictably affect the work. However, you can collect for a garage or auto repair shop - using such a device you can quickly fill the tires with air, create an excessive pressure for the sprayer and other pneumatic tools, as well as find another use of equipment.

The compressor with the receiver will serve with their own hands, rather than purchased equipment, subject to the correct assembly from high-quality parts. This is explained by the fact that the master who set the goal to make the air compressor with the receiver makes it for himself, and for this reason cares about the quality. What details are needed and how to assemble?

We collect a compressor with your own hands

The main element of the homemade air pressure is a motor installation. It is recommended to use for the refrigerator. It is notable for the presence of a starting relay that provides the ability to install and retain a certain level of air pressure in the receiver. If there is no old and unnecessary refrigerator at hand, you can find an aggregate on the landfill of industrial waste or familiar. Preferences must be given to the refrigerator made in the USSR, as powerful and reliable compressors were used for the production of Soviet refrigeration equipment.

The refrigerator has three tubes in the design, one of which is posted from one end. The rest are air ducts - one implies the air, the other releases. With further assembly of the unit it is important to understand which way the air flows circulate. To determine, it is necessary to turn on the compressor to the network for a short time and to observe which way the circulation occurs. It is recommended to note "input" and "output" with different colors, so as not to confuse when assembling. Prevent an arbitrary replacement direction of air will help the air check valve for the compressor.

In addition to the heart of the old refrigerator, it will be necessary to assemble the automotive compressor:

Air receiver (a good option is a fire extinguisher).
Manometer.
Filter coarse fuel cleaning.
Welding filter.
Air pressure control relay.
Set of adapters, clamps, hoses.
Tumbler for voltage 220 volts.

At various stages of assembly, it will take: the basis for installing the finished unit, wheels (you can take from old furniture), paint, engine oil and an anti-corrosion agent.

Receiver assembly

The compressor receiver is a solid container containing air under pressure. The role that car air receiver performs is the elimination of pulsations during air supply to the compressor, which is carried out by aligning the pressure in the system. The secondary role of the receiver is the storage of inert gases or condensate.

The receiver capacity is absolutely sealed, and the required volume depends on the cyclicity of air consumption by consumer and air compressor performance. The use of the receiver prolongs the period is often used in various fields, including painting work, industrial production and other industries.

Car air receiver can be manufactured in three ways:

Carbon dioxide fire extinguisher. Well suited for long-term gas storage under pressure up to 10 atmospheres, has durable steel walls and is characterized by the safety of use. For the receiver, a 5-10 liter fire extinguisher is enough. To turn the fire extinguisher in the compressor receiver, you must remove the locking device and put on the hole prepared adapter for the hose. The cylinder must be empty and wash thoroughly. Next, plumbing is installed and sealed. After that, you can use the manufactured receiver for work.
Hydroaccumulator. A more specialized device with a sufficient range of tanks. Disadvantage - small nominal pressure. Plus - suitable carving at the exit. To use as a receiver, you need to remove the inner membrane for storing carbon dioxide, and then connect the hose as in the example with the fire extinguisher.
Oxygen balloon. Exceptional strength and air pressure in tens of atmospheres, but small capacity, inconvenience of transportation and severity. To use enough to connect the hose - the homemade receiver is ready for work!

The air receiver can be made from any cylinder for storing compressed gases, but before use you need to make sure that the selected container will withstand the working pressure of the future compressor.

Final assembly of compressor installation

The compressor with the receiver must be installed on one general basis for the convenience of storing and transporting self-made equipment. The compressor from the refrigerator found earlier should be cleaned of rust (if any). Next, the oil change is performed in the air compressor, as the old one probably has become unusable. Pouring oil in an air compressor can not be used - in the absence of a special compressor lubricant, you can use a motor, synthetic or semi-synthetic.

Install the compressor with the receiver on one general foundation for the convenience of storage and transportation

The compressor assembly is carried out in five consecutive stages indicated below:

Install the supercharger from the refrigerator on the prepared base and secure the threaded stiletto. The receiver is installed in a vertical position and is fixed through folded sheets of plywood in the amount of three pieces with a cylinder hole. To the bottom of the base, the wheels are screwed for the convenience of transportation.
Install the compressor and check valve for the air compressor into the air intake hole. For convenience, you can use a rubber hose.
On the outlet of the supercharger through the hose, put a moisture separator - it can be taken from the diesel engine. To prevent the breakdown of the hose under pressure, it is necessary to strengthen the combination of automotive clamps. The moisture separator must be installed at the inlet of the gearbox - devices for the pressure of pressure in the receiver and compressor. The output pressure of the output pressure is connected to one of the ends of the plumbing cross.
Set the relay to the upper part for the pressure adjustment, and in the free end of the pressure gauge for control. All joints should be firmly strengthened with fum-ribbon and delayed the homutics to prevent breakdown.
Using a 220 volts toggle, connect the network phase to the compressor output. Isolate the contacts with a tape or dielectric casing.

After connecting the equipment to the network, we can assume that the oil air compressor is assembled. You can enable the device to the network and check its performance.

What problems can wait for assembly?

Air cars Compressors are simple in terms of design and operation of the device, however, during self-assembly, you can face the following problems:

Oil supply in an unsuitable hole. Due to the presence of several tubes in the supercharger, you can get confused and pour the oil is not at the hole. To prevent problems, it is necessary to pour oil into any of the two inlet tubes - the final is excluded.
Small diameter of the receiver inlet. If the use of standard cylinder thread is impossible, an item with flux and attach. The final design is capable of withstanding the pressure of 5-6 atmospheres.
Incorrect connection of the supercharger tubes. So that the circulation in the system occurs without failures and in one direction, you must install the check valve on the compressor with your own hands. It will prevent possible problems and ensure the stable work of the supercharger.

Try to collect the oil supercharger with your own hands in full compliance with the instructions, recommendations and safety rules. In this case, no problems with the work of the equipment will arise.

Installation of necessary pressure

Air compressor or car supercharger must be properly prepared for first use. To start work, you need to adjust the pressure mode using the relay. The setting is carried out by two springs - large sets the minimum pressure, small - maximum. The first contact of the relay connects to zero, the second is attached to the supercharger.

View video design

When you first use the equipment, trace the testimony of the pressure gauge - the relay should include and disconnect the supercharger when the lower and upper boundaries of the pressed pressure are reached, respectively. After the final setting, you can paint the homemade supercharger and continue operation.

Buy or not buy? That is the question. But having an old faulty refrigerator with a working compressor this question disappears - of course make a compressor for painting using existing materials yourself!

The self-assembly of the compressor is not so complicated as it seems at first glance, especially if you know the principle of its action. To assemble the compressor, you will need the engine to drive the air into the container, where the same air will be under pressure. The mechanism is arranged in such a way that the surplus of air, due to which the pressure in the container may exceed the required, output through a special shore valve. It is necessary in order to in the process of painting a car (or what is still needed), the paint lasted evenly on the entire surface, and such an effect can be achieved only when constant pressure in the sprayer.

The compressor can be used in a wide variety of areas - to swing tires, airbrushing, painting parts and so on. Possessing the necessary tools and certain knowledge, it is quite possible to manufacture this unit based on a conventional refrigerator. The homemade compressor gives about 7 atmospheres, which is enough for the ordinary garage workshop. The compressor from the refrigerator will be quite quiet and, most importantly, cheap at cost.

What is better - homemade or purchased?

You can allocate several main differences between them:

In the design of the factory compressor, there is an electric motor that transmits torque to the working chamber through the belt transmission. As for the homemade compressor, it consists of a housing and the engine itself, without belts.
In the factory embodiment, automatic pressure reset, input and output filters, pressure indicators, etc. have already been installed. The compressor from the refrigerator will have to install the adjusting equipment independently, given all the features.
Despite the fact that most factory compressors are equipped with automatic systems, in some budget models, such a feature is not implemented. In other words, these aggregates will have to be turned off independently, checking the time by the clock. Homemade compressors, mainly equipped with a protective relay, turning off the engine when the risk of overheating occurs.
In some factory models, there may be no lubricant. Of course they have small, but there are no different exhausts. This circumstance is very important, especially if the paintopult behaves quite capriciously, without suffering different impurities. As for homemade compressors, there are plenty of oil.
The main feature of the homemade compressor is very quietly working, especially if you put all the tubes on it correctly, observing tightness. As for the factory compressors, they behave more noisy, so its use is possible only outside the house.
The cost of making a self-made compressor is very low, because the main components are taken from the old technology, and the adjusting equipment will cost a maximum of 1000 rubles.
In the factory compressor it is impossible to make any technical changes. In other words, if the unit is not powerful enough, it is possible to use it only as a pump for tire paging, no more. Homemade options are good because you can add some details, such as a large receiver, thanks to which you can significantly increase the power of the device.

As practice shows, the homemade compressor for painting the car breaks much less often than its overseas and domestic factory counterparts. On the Internet you can find a lot of instructions for the construction of compressors with your own hands. So let's discuss several options that can help in this matter.

Homemade Compressor Making Schemes

Here are some options for the device assembly schemes - choose which better suitable for your purposes:

Details for compressor assembly

pressure switch;
pressure gauge;
reducer with oil separator;
oil filter oil separator;
adapters;
cross;
fitting and nut;
coupling;
nipple;
a tube;
car clamps;
receiver;
nuts, hairpins, washers;
furniture wheels;
automotive oil;
toggle switch;
fork and cord;
fuel filter;
plywood panels (chipboard);
compressor from the refrigerator;
maslo-resistant hose, screws, "epoxylin", sealant, paint, tape FUM, Rust Remiring and Other Small Melochka.

In their own variants, checked several different control valves. After several attempts, the Ruck14iamsv check valve ordered, it does not buzz and can perfectly approach the construction of the compressor from refrigeration plants. Also need to buy a safety valve (MINI SVM14-12). Take from the powder fire extinguisher 16 kg. The pressure in the tank is 9.5 bar, the shelf life is 2 months.

IMPORTANT: Notice what kind of oil to fill - synthetics is very bad with usual, so you do not need to pour everything that fell.

An oil separator must be installed between the compressor and the tank.
Oil should be added through the third solder tube.
It is best to solder the connector and screw in screw or a metal plug.
Install the dehydrator, it also captures the oil.

In connection with the sudden failure of the refrigerator, became the owner of an effective unit for 110 W. Of course it can be converted to the compressor. There is a car aerography, which was previously used with a 12-hundred-made compressor, as well as with high power compressor. These devices are noisy and short-lived. So I had to do homemade.

Compressor assembly instructions

It is important to perform the correct dismantling of the compressor so as not to damage it. First, using pipes snack tubes, leaving the engine leading to the radiator grille. Next, the wires from the relay are cut, but their length should remain about 20 cm. Before unscrew the compressor, it is necessary to make a mark on the relay lid.

After the contour of the compressor supercharger from the refrigerator is broken, an atmosphere affects the spindle, which will lead to the loss of its properties. If the supercharger does not replace the factory oil, its pistons are rapidly wear out, as a result of which the engine fails. Therefore, it is recommended to be first replaced with a motor semi-synthetic. like car.

In addition to the output and inlet tube, the compressor from the ordinary refrigerator is equipped with a third tube with a sealed end. In order to use it in the future to paint a car, it is necessary to eliminate the clogged part. To do this, using the cutter for metal, you should make a neat incision in a circle, but it is not flowing to the end, after which it was broken off the inscribed piece. It is important that the metal chips do not get inside.

The remaining nozzle must be collapsed and drained the old oil, then pour semi-synthetic in it in the same quantity. After that, the nozzle is clogged with the screw of the wrapped fum-ribbon.

The fire extinguisher body will be excellent for the receiver. It is important that it is cast, seamless and possessed a volume of 10 liters. Before using it, it is required to examine the fire extinguisher from the inside for corrosion. Flashlight is used for inspection. If corrosion is still present, it is necessary to get rid of it using a special fluid.

Stages of assembly work

Make a compressor from the refrigerator - it means to perform a simple sequence of steps:

Take pliers, a cape key to 12, 2 screwdrivers - on plus and on minus. At the bottom of the rear panel, eat tube passage connecting the compressor with the cooling system. Unscrew the start relay, pre-posing on it the upper and lower sides. Disconnect the relay from the plug. All fasteners take with me.
Checking the performance: connect back relays, ensure air access to the compressor on the tubes, connect to the network. If everything is done correctly, the device works. The air will go to one tube, and from another exit. Mark these tubes.
Attach the compressor with self-drawing to a wooden board.
We take the old fire extinguisher, 1 600 mm long hose, 2 others - 100 mm, fuel filter, clamps, pressure gauge, sealant. Drill, twig, pliers we already have.
If there is no fire extinguisher, we will make a plastic container. To do this, we must take a container with a volume of more than 3 liters. Make 2 holes. Insert in 1 hole inlet tube at a distance of 2 cm from the bottom of the container. The output pipe is lowered deep into 10 cm. On the plastic tank, it is impossible to install a pressure gauge.
If there is an iron tank, then you can fix the tubes with welding. Install a pressure gauge on the iron receiver.
We fasten the receiver and compressor.
10 cm long hose Put the filter, attach the free end of the tube to the inlet of the designed apparatus. Another hose connect the receiver input with the output of the compressor. Docking places fix clamps. A diesel filter is fastened to the last hose, and its free end is inserted into the receiver outlet. The remaining end of the tube can be put on the need for the need for airbrushing, painting.

The second version of the step-by-step instruction:

Serve a special hole for the adapter to be consolidated. You can choose different ways, for example, the most affordable is cold welding (using epoxylin).
Carefully cleaned the bottom of the receiver from pollution - plaque and rust. This is necessary in order for "epoxylin" well concluded with the surface for durable gluing. Well, of course, that the paint does not contaminate and did not get into lumps with garbage. You can achieve this by reading the bottom of the fire extinguisher to the metal glitter with rotationally circular motions of sandpaper.
We fix the adapter, clamping it with the front side with a nut, and let the time to frozen "epoxylin" according to the instructions.
Go to the bottom of the compressor, for which you need to get three wooden boards or a piece of plywood of 30 for 30 cm. For the convenience of further moving our device to the base, you can fasten mobile wheels for furniture. We specifically do not describe the size of holes and other little things, since it will all be purely individually, as it depends on the selected material, such as the compressor and so on.
Drink holes for the compressor and spills and mount them. Studs are fixed with nuts and washers.
We wear a car filter with a special paper core on a breath of compressor. It will help to avoid falling inside the compressor of dust and other small contaminants.
Next, we will deal with the electrician. So that our homemade compressor for painting the car is convenient to use, equip it with pressure relay (for example, PM5 or RDM5), as well as shutdown togglers. The first device, pressure relay, we need to turn off the compressor in the process of pumping air into the receiver when the pressure reaches a permissible maximum, and vice versa, turn it on when the pressure drops below the allowable minimum. It is possible to adjust the value of the maximum and minimum pressure values \u200b\u200bdirectly on the relay using springs, and the large spring is responsible for the minimum pressure (and the corresponding inclusion of the compressor), and the small one is due to the difference between the maximum and minimal pressure value.
Consider carefully and see on the relay 2 of the contact, designed specifically for connecting it to the network. Since initially, such relays were used in the water supply system, we will slightly change its purpose and connectivity. Our task is to connect the first contact to the network, and the second to the compressor.
A complete shutdown toggle switch put on the gap between the pressure relay and the 220V network. It will help de-energize the entire installation, so as not to run constantly to turn on-off.
Prayer receiver and proceed to the final assembly.
Screw the nut with the fitting on the filter-oil separator.
We take the hose and put it with one end on the fitting, and then stretch on the compressor tube and clamp all this with clamps. For this, the hose take reinforced, oil resistant. Each threaded connection should be sealing a fum-ribbon.
We screw the filter to the bottom of the receiver and process the silicone sealant connection.
We screw the cast-iron cover, but pre-process its threaded connection with the same sealant. To improve sealing, you can put a rubber gasket under the cover.
It is necessary to screw the tube on the lid, the thread of which should be a quarter of an inches, and on it - to fasten the cross.

Installation of details of the device

For ease of storage and movement, it is best to position all the compressor details compact on the same base. As the basis, we will use a wooden board, on it we reliably fix the engine - the supercharger and the fire extinguisher body.

The compressor engine is fixed using threaded studs, which has been produced in advance drilled holes, and nuts with washers. The receiver is located vertically, using three sheets for fastening, in one of which cut the hole under the balloon.

Two others, with the help of self-tapping screws, attach to the bearing board and glue with the retaining receiver sheet. Under the bottom of the receiver, at the base, squeeze the recess corresponding to the size. For maneuverability, screw the wheels from furniture accessories to our base. Next, perform the following operations:

We provide protection for our system from dust and coarse particles, for which, as an air intake, use a coarse filter of the fuel of gasoline engines. We use a rubber hose for this purpose, a tightly crimping filter fitting and a supercharger inlet. At the entrance of the compressor, low pressure and amplification of contact with automotive homutics is not required. Thus, we made an input filter for the compressor with your own hands.

At the output of the compressor, the oil separator should be installed, it will not allow passage of liquid particles. As this element of protection, use diesel engine power systems filter. He is attached to the supercharger with the help of a oil-resistant hose. Since the pressure at the release of the compressor is increased, here and everywhere further, to strengthen the contact we use automotive clamps with fasteners tightening with the screw.

Oclohylar separation filter connect with gearbox input. We need a gearbox to unleash the receiver pressure and the output of the supercharger. Its high pressure yield we apply to the water pipe to the left or right.

From the opposite login of the quarter, we screw the pressure gauge, we will control the pressure of compressed air in the cylinder. Top view of the crosses retard the adjusting relay. All connections compact fume ribbon and sealant.

The relay will allow you to set a wide range of pressure levels in the receiver, in a timely manner of the supply chain of the supercharger. As an actuator, you can choose RM5 or RDM5. These devices will include a compressor if the compressed air pressure in the receiver falls below the marker, and turn off when the specified range is exceeded. Required pressure is configured on the relay using two springs. The large spring sets the minimum level of pressure, and the small adjustment of the upper limit by setting the border of the compressor shutdown. RDM5 and PM5 were initially produced for use in the water supply network and electrically passive, that is, they are conventional switches with two contacts. One contact we connect with zero network 220 V, and the second with a supercharger.

Phase network wire through a toggle switch to the second network entry of the compressor. Introduction to the electrical diagram of a toggler allows you to quickly disable the system from the power, without running each time to the outlet. All electrical connections are disappearing and carefully insulated.

Compressor Testing and Configuration

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

Collecting the design, it is necessary to check its performance. Connect to the output of the compressor the paint clock or gun to swing tires. After that, when the toggle is turned off, turn on the plug into the network. I exhibit the adjusting relay on minimal pressure and then apply power to the supercharger. The pressure generated in the receiver is controlled using a pressure gauge. Making sure that when the relay is reached, the engine turns off the engine, check the tightness of the air ducts and connections. It is easy to do with a soap solution.

Making sure that the compressed air does not go out of the system, wagate it from the receiver chamber. As soon as the pressure in the cylinder falls below the marker, the relay must work and run the compressor. If everything works properly, you can try to paint some unnecessary detail. Preliminary work on the preparation of the surface to apply enamel here is not required - it is important for us to work out skills and determine which pressure will need to paint the product. An experimental way determine the amount in the atmospheres, in which the excess pressure is enough for the color of the entire part of the uniform layer with a minimal number of opening the supercharger.

Adjustment and testing

The main check of the self-made compressor is to determine the possibility of effective pressure regulation, which is created in the collected system. The easiest way to do this with a test painting of any surface. At the same time, the following is sequentially:

Exhibit relays on 4 ... 5 atmospheres.
Connect the compressor to the network.
The manometer is monitored for the stability of the parameter. If the relay is operational, then when the pressure is exceeded, it will turn off the compressor, otherwise open the reset valve, and the unit is immediately turned off.
Check the system on the absence of spontaneous energy boom, for which a conventional soap solution can be used.
When the pressure is reduced to the level, below the minimum permissible, the relay must automatically turn on the compressor.
After staining any surface, it is necessary to check the quality of application of paint - with an external inspection, traces of moisture, extraneous particles and dirt should not be revealed. If such defects still have arisen, you should additionally check the operation of the output filter - the oil separator.

Video instruction on the compressor

The work of the assembled unit will be long and reliable, if it periodically holds the regulatory service. It comes down to replacing the input filters, the periodic purge of all air lines, as well as the oil change in the compressor.

To load the compressor by more than 75% of the power undesirable. But it is quite difficult to understand where the trait is located for which it is impossible to implicit, predict what pressure will show the compressor. It depends on when a refrigerator was released, what brand it is. In old models, this indicator will be better. Then, for comfortable quality, you will need only replacing consumable filters.

The author used the unit from the truck, it is driven by a three-phase engine in 3 horsepower. Interesting is the fact that the system is equipped with a forced lubricant of the pressure compressor, the automotive pump is responsible for the steering hydroperizer. If the project interest you, I propose to study it in more detail!

Materials and tools that used

List of materials:
- old compressor from the cargo car;
- three-phase engine for 3 hp or similar;
- pulleys, belts, wiring, switches, etc.;
- automotive gas cylinder or other similar capacity;
- sheet steel, profile pipes, corners;
- wheels for garden carts and axes;
- tubes, hoses, fittings, pressure gauge, filters and other;
- automotive pump hydroper wheel steering (by the author from Audi 80);
- screws, nuts, fum-tape and other;
- grid (to make a protective shield);
- Paint.

List of tools:
- Miter saw;
- Bulgarian;
- welding;
- screwdriver;
- drill;
- vice, wrenches, etc.

Compressor manufacturing process:

Step one. Install on the tank wheels
We install on the tank of the wheel so that this sweature car can be transported. To do this, we install reliable steel clamps onto the tank and we are tightened by their bolts with nuts. It is to these clamps, then we will fix all the necessary equipment.

When the clamps are installed, secure the axis with wheels. As an axis, we use a rectangular profile tube to which round axes are welded. Wheels choose stronger, with steel discs and on bearings, as the weight of the device is quite large.

We also need to fight the leg in the front of the car, it is made from a piece of pipe to which the Pyhat from Sheet Steel is welded.

Step second. Making frame for equipment
Compressor, as well as the engine will be installed on top of the receiver, they will be attached to the clamps. We make the frame from the corner, as well as sheet steel. Under the compressor drills holes and cut the thread, it will be static with the help of screws to the frame.

As for the engine, it should be able to ride along the frame so that the belt can be stretching. Drill holes, and then we combine them with a grinder to get a slot hole. As a tensioner, we weld the elongated nut and wrap the bolt. Now, spinning the bolt, the engine can be pulled out and pull the belt.

We weld the pieces of steel plates to the frame and then we install the frame from above the receiver. You can fight the frame and the handle to be, for which you take the compressor, the author welded it from the profile pipe.

Step Three. Adapter
In the cylinder there is a hole of a large diameter, you need to make an adapter, the author made it from sheet steel. We apply a piece of paper to the hole and pencil we are looking for where to drill holes. Well, then the case of the technology, cutting off the workpiece, drill holes and screw the pipe. It is very important that the weld seam is strong and hermetic.

Step fourth. Plum and incoming pipe
In the "belly" receiver drills a hole and weld the nut. As a "crane" will use the usual screw. This item is needed in order to merge from the receiver condensate, which over time will certainly be formed there.

Pitch fifth. Testing tightness
To check the tightness of the cylinder, the author poured water into it, and then created pressure in more than 20 bar. If, with such a pressure of leaks, it will not be found, it means that the balloon is assembled very reliable. It is important to inspect all the welds and drain screws, in these places should be dry.

Step six. Connecting equipment
Next, connect from the compressor the hose to the receiver, and also screw the splitter into the balloon to connect the selected hose, pressure gauge, valve, and so on. All threaded connections are carefully insulated with a fum ribbon.

Step seventh. Lubrication system
The compressor needs forced lubricant, for this we need a small pump. As a pump, the author decided to use the automotive pump from the water hydroperizer, we will also need hoses, pressure gauges and other spare parts. In the lubrication scheme, the valve for 3 bar is provided if the oil pressure becomes greater than this value, the oil is extended back into the tank with oil.

Step eighth. Protective flap
For belt drive, you need to make a protective flap so that there is not tightened clothes or something else. To do this, we will need a grille of steel or aluminum. We cut it, Genne and cook if necessary. Well, then fasten the grille with screws to the machine.

With the help of the submitted means and the standard set of household tools, any householder can collect a homemade air compressor from the refrigerator. The scope of such an apparatus is quite wide and justifies the costs of forces and means on its manufacture:

Air compressor for airbrushing and painting.
Electric pump for pumping automotive tires.
Energy source for pneumatic tools.
Air pump for blowing complex mechanisms during their repair.

Homemade air compressor from the refrigerator

The range of possibilities, power, durability and reliability of the self-made system of compressed air generation collected on the basis of the compressor from the old refrigerator depends on the correct design and installation of its elements.

Problem Selection of compressor

Compressor from the old refrigerator

The assembly of the functional and reliable apparatus begins with the choice of its main part - compressor. It is available in any household refrigerator, performs the function of the pump for pumping the refrigerant and is a single block in a hermetic metal shell, with the outside of which the relay is attached to run it. To solve the problem, any similar motor in good condition will suit. Further selection and configuration of all additional structural elements is determined by the form and characteristics of a particular device.

Search compressor

If there is no old and unnecessary refrigerator at hand, it is always possible to purchase a dismantled unit on the used tools and spare parts market. There you can buy a workable option for 100-150 rubles.

Dismantling of the compressor with your own hands from the refrigerator

Removing the device from the refrigerator can be made by conventional wrench and scuffers. Tubes feed and exit air is better to snack, and not to cut off, so as not to clog the mechanics of the device. The regular startup relay is also dismantled.

Features of refrigerators and their compressors

The possibilities and characteristics of the compressor selected as the basis for the future compressed air supply mechanism should be taken into account. There are the following options:

The simplest solution is engines operating in the linear scheme.
Engines operating in the inverter scheme.

Both options are suitable for work, but their features should be taken into account. Linear devices are designed for constant speed. Therefore, they are better suited to create a compressor apparatus. Converter variants are calculated on the variable speed, which should decrease depending on the signal from the temperature sensor.

Checking performance

Refrigerator compressor performance

In order to check the performance of the block, it should be turned it first using an electronic resistance meter, and then connect to the network:

It is checked every input contact. Usually there are 3 pieces on the block, configured under the standard relay connector.
Contact with maximum resistance refers to the mechanism of launching the electric motor (approximately 20-40 ohms)
Contact with a resistance of 10-15 ohms refers to the winding that provides the operating mode (wire on its winding thicker).
Third contact - phase.

To check the connection, the voltage is fed to a working and phase contact, after which a short-term closure of the working and start contact is made. The device must create a stable voice timbre when turned on, and airflow should go from the output tube.

Development of the compressor station scheme

Preparation of equipment for homemade compressor station

When developing a compressor station scheme and compiling the list of additional equipment to it, a planned scope should be taken into account. The greater the receiver and pressure in it, the wider there will be homemade. The standard scheme includes the following parts and mechanisms:

Electronic pressure sensor. It turns off the engine when the given pressure parameters are reached in the receiver.
Pressure gauge for measuring the degree of compression of air.
Safety valve.
Drainier air when leaving the receiver.
Air filter for installation on the inlet tube of the compressor unit.
Air jet cleaning filter under pressure from oil.
Switch button.
Wires, high pressure hoses and fittings with the necessary configuration.
High pressure cylinder for receiver.
Ball valve, overlapping air supply to the consumer at the outlet of the system.

Methods of acquiring equipment

An old compressor from the refrigerator can be cheap to buy on the used tool market

Most parts for the compressor station are easiest to buy in the plumbing store. There are specialized sites where all items without exception can be ordered in several clicks. Much cheaper needed equipment can be purchased on the market for used tools. It is permissible to use cheap fuel filters, but with the help of conventional fitting and a metal sponge for washing dishes, you can quickly make a more reliable filter for coarse air purification from the oil, which is installed on the outlet tube of the engine unit.

Receiver problem

Homemade welded receivers

Callers for homemade compressor equipment on sale not to find. For this purpose, cylinders of various purposes and tank are reworked for this purpose:

Propane and methane cylinders.
Fire extinguishers.
Cylinders for storing compressed air, carbon dioxide, oxygen and friend.
Homemade welded structures.

ATTENTION: When using self-made corps under the receiver, it is necessary to take into account the degree of risk and explosion of such a device.

The simplest option is the steel pipe of the middle diameter with hermetic plugs. In the receiver case must be at least 3 bandwidths:

The inlet for compressed air from the compressor.
Outlet.
Condensate plum assembly from a cylinder to be located at the bottom point.

When using steel cylinders, the input and output tubes are welded with welding. The housing must withstand more than 10 atmospheres.

Preparation and connection of the compressor from the refrigerator for use in the compressor installation

When connecting the compressor unit, you can leave the same scheme as it was provided initially through the start relay. You can attach the pressure sensor wires to this relay, which will interrupt the chain after reaching the calculated pressure parameters in the receiver. Additional amenities is the equipment of the entire system with a push-button switch and LED indicator of work. Before connecting in the block, it can be changed oil. Old oil is designed to work with Freon. Special compressor oil for operation in the air will protect the electric motor from overheating and premature failure.

Installing the air filter on the air intake

Installation of the fuel filter on the inlet tube of the compressor from the refrigerator for cleaning the air flow

For landing on the air filter inlet tube, the simplest option of which is a plastic fuel filter, you can use both a soft rubber hose and a metal corner fitting with a threaded connection. The connecting soft tube, stretched on the plastic tip of the filter and the copper inlet, is easiest to blame the metal protracted clamp.

Installation of oil cleaning device

The air jet coming from the block contains a significant amount of oil, which can be filtered using a homemade clipper. In its case, a drainage hole with a crane should be provided through which it can be cleaned. Between the oil cutter and the compressor unit, the cooling coil made of a metal tube is allowed.

Mainstroke with measuring and control equipment

Preparation for the assembly of a highway with control and measuring equipment for the compressor station

All control and measuring devices are easiest to post on one highway. This will require conventional metal tees from the plumbing store. On a single platform, a system shutdown sensor is placed when the operating pressure is reached, a pressure gauge, a device for cleaning air from condensate accumulating in the receiver and a safety valve, with which you can quickly reset the excess air from the cylinder. At the outlet of the highway, you can arrange a control ball valve. The main unit is connected to a cumulative cylinder or through its standard inlet, or with the help of improvised entrance on its body.

The problem of connecting control and measuring equipment

If the diameters of the installation instrumentation do not correspond to the size of the available fitting, then in this case all devices can be installed using the plugs in which the holes are drilled by the required value and the thread with the corresponding step is cut. Threaded compounds are compacted using FMU tape.

High Pressure Rubber Tubes Problem

Oxygen hoses with thick walls are one of the most affordable materials for connecting all parts of the compressor unit. But it should be borne in mind that the air jet at exit from the engine compartment will contain a large amount of oil that destroys the rubber. For this reason, it is preferable to use metal (copper, or steel) tubes.

Compressor maintenance from refrigerator made with your own hands

Maintenance of the homemade compressor station should be carried out taking into account the features of its configuration. It should periodically check the performance and tightness of all nodes. Violation of the tightness of the locking devices is easy to identify if the pressure measurement device is installed, which will immediately show it a quick loss. The performance of the pressure sensor is easy to control using a pressure gauge, the readings of which can be fixed at the time of the standard shutdown of the system after filling the air tank. It should also regularly drain condensate and oil from filters and cylinders.

What is the choice of compressors suitable for use at home, today may offer industry? Likewise, the range is small, and besides, the proposed samples have a weighing of flaws, ranging from dimensions and weight and ending with noise levels.

Ready homemade compressor

It turns out that the homemade compressor will be the best solution to the problem with the home workshop equipment.

Engine selection

In my opinion, the best choice for the engine of the home compressor can be called an aggregate from the household refrigerator of the Soviet era. Personally, I did myself two homemade compressors with such aggregates, one block was vertical (I do not know the brand), and the second from the refrigerator Yuryuzan (horizontally located).

One compressor was designed to power the airbrush, and the other worked with a bobbing gun. There were no problems with any other aggregates. Many may argue that they have a small performance, in my opinion, no longer need for home. But when working, such a device is practically not heard.

Equipment for compressor

In addition to the engine and directly the pump unit for normal operation, other components are needed to the compressor. To make a compressor with your own hands we will need:

Base for the whole design;
Air receiver;
Filters and moisture separator;
Connecting hoses or tubes;
Gearbox and pressure gauge;
Engine launcher;

Design homemade compressor

The basis, it is the same frame, can have any design and be made from any girlfriend.

For example, you can use a thick plywood leaf or chipboard sheet as the basis, and place all compressor nodes so that free access to all parts is provided.

In principle, the design of the base and its materials are limited only to the fantasy of the developer, I, for example, one of the compressors was generally without a frame (I will describe how to do).

As a receiver most often, the inventive people use old receivers from the KAMAZ brake system, a very convenient thing, there are all the necessary threads for fittings and a valve for condensate drain. Alternatively, you can apply an old foam or carbon dioxide fire extinguisher (better than somewhat sequentially included).

With this receiver, you will have to work a little - to boil tubes and bushings to attach the rest of the system.
Air filters and moisture separator are best used industrial production, for the price of course expensive (a good set is now from 3000), but the quality is worth this money.

Make an air compressor with your own hands without connecting hoses or tubes will not work. According to personal experience, I can say that the oxygen hoses (from welding) show very good results, a lack of one - a decent mass, and, therefore, the airbrush is inconvenient, it is better to use a standard spiral hose for it.

With the pads, everything is clear, the regular start-up engine switch is used, only the switch is added. It is more convenient to use a foot key, then when working your hands stay free.

Work on the compressor

I'll tell you how to make a compressor on my example. It began with the fact that I tried to use a small compressor to infamous wheels from those that are on sale. He remained dissatisfied with his indicators and took up work.

I took the oldest refrigerator from the mother's mother-in-law, pulled out the unit with wiring out of it, the rest threw out. The engine cleared the skin and re-painted paint from the can, then went to the construction market. There picked up a piece of oxygen hose, acquired a suitable clambeing and switch.

After that, went to the buddies to the part and became the owner of the new Kamaov receiver. Brought all this good home and began to create a non-hard design.

In order not to make a frame, I decided to use the receiver as the basis of the entire compressor. To do this, first cut out from Watman and slept at the place of attachment to the engine and support for the receiver. After everything was ready, cut out of steel 1.5 millimeter, the details bent them and welded to the receiver. Thus, it turned out an analogue of the factory compressor.

Further, everything is simple - on the pillows I installed a pumping unit and connected the entire electrician. Then it took up pneumatics, at the inlet pipe of the compressor through the hose segment attached a fuel filter from the Zhiguli (later replaced it with a wire frame, covered with thin foam).

The adapter for the feed hose was screwed into the threaded bushing of the receiver and joined it with an outlet tube of the pump, an indoor separator unit with a gearbox and a pressure gauge, to which a gas crane with a connector was screwed to connect the airbust hose. I tried - everything works wonderfully, there are no complaints.

A small advice to those who will gather to make a compressor from the refrigerator with their own hands - turn on between the compressor and the receiver check valve, the load on the engine will significantly decrease.