We make a compressor from a refrigerator with our own hands. Do-it-yourself compressor from a gas cylinder What can you make a compressor from?

An air compressor is a device that sprays paint. It is commonly used in workshops and garages to paint cars or inflate wheels. You can purchase such equipment in a specialized store or make it yourself. Unlike factory models, homemade equipment can be more efficient and last much longer. In addition, in terms of financial costs, independent 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 device - wheel inflation device. 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 automotive devices. But it will take about 10 minutes to pump up the wheels. Therefore, the work is done intermittently, otherwise cheap devices may overheat during this time. The reason is the low performance of automobile compressors.
Performance. In a unit of time, the device is capable of releasing air quickly and in large quantities. Thanks to high performance, the container fills faster, and the direct use of compressed air makes the flow from the nozzle stronger.

A high-speed engine and a device with a volumetric piston system will help combine power and performance. To ensure that the equipment does not stop during overheating, it is necessary to create additional cooling of the cylinders. Sometimes turbines are used for the working unit. In everyday life, simple devices are not often used because of their high cost. In order not to have to choose between power and performance, use a receiver.

The receiver is a storage tank. For industrial devices, a steel cylinder is used as a receiver. A fairly powerful, but not very efficient compressor slowly fills the cylinder. In a short period of time, a volumetric flow of air can be supplied from the receiver, but only when sufficient pressure appears. After the air is supplied, it should restore pressure. All devices operate on this principle. For a compressor with low power, an electric motor from a toy is suitable. This device is often used to supply air to an aquarium.

Functional homemade compressor

Unlike devices that are made from car accessories, the compressor from a refrigerator runs continuously. This is due to good power and performance. In addition, the quality is no worse than factory models. And if it is possible to get the components for free, then the production of such a device will cost a minimum. The device is designed for painting and blowing, tire fitting, and provides excellent performance for pneumatic tools. For the manufacture of a compressor for 220 V you will need the following parts:

Motor-compressor from an old refrigerator.
Tees, oil filling tube, hoses, fittings, air inlets.
A reducer that will monitor the pressure.
Two pressure gauges.
Receiver. A fire extinguisher or gas cylinder, which must be completely empty, is suitable for this. You can weld a homemade container from sheet iron and a thick pipe.
Filter for air purification.
Oil.
Emergency valve.
Start relay and pressure switch.
Paint for metal.
Fum tape, hacksaw and motor oil.
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 productivity. An internal combustion engine is used as a compressor, the crankshaft of which begins to work not from fuel combustion, but from the reverse process. At the same time, the piston group of the device has a large margin of safety. An electric motor with a power of 3 kW or more is used as a drive, which can be purchased at a low cost. Or use a working engine, removing the ignition and intake system, exhaust, starter group and gearbox.

This device 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 (cylinder) and a powerful auto compressor to inflate the wheels. When making the device yourself, you must follow the following rules:

Containers with mechanical damage and corrosive deposits cannot be used.
The structure must be well fixed.
A steel sheathing must be made. This is necessary if the receiver accidentally ruptures.
It is necessary to provide a pressure reserve. If you plan to increase the pressure to 5 atmospheres, then its strength should be from 10 atmospheres.
To ensure that the compressor automatically turns off when the pressure reaches its maximum, an emergency shutdown sensor is installed. Or you should install a mechanical valve, which, if necessary, will provide an emergency pressure release.
The high-pressure device should not be left 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 installing emergency sensors. An overinflated tire will simply burst, and if a steel cylinder explodes, you can get seriously injured.

It’s easy to make a compressor with your own hands. 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.

A compressor can be called a fairly common piece of equipment that is used to create pressure in various systems. There are simply a huge number of different versions of such devices, all of them are characterized by high efficiency in use. Industrial compressors cost quite a lot of money, which is why many are considering creating a design with their own hands. There are many different instructions on the Internet; when choosing, the required power and performance are taken into account. Let's take a closer look at the features of creating a homemade compressor from a gas cylinder.

Power

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

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

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

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

Vacuum.
Group with low and average indicators.
High and extra high.

Most homemade structures belong to the second group. This can be due to the fact that too high an indicator becomes the reason for complicating the task.

Performance

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

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

The performance is also indicated in the operating instructions. This indicator is determined by conducting tests under certain conditions. As for the homemade construction from gas cylinders, it is quite difficult to control and measure performance.

Air compressor from a fire extinguisher or gas cylinder

When considering how to make an air compressor with your own hands, you should take into account that such a design is represented by a combination of a motor and a container that acts as a receiver. In this case, it is possible to use a gas cylinder or fire extinguisher. A do-it-yourself compressor made from a gas cylinder is characterized by the following features:

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

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

How to make a full-fledged compressor with your own hands

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

Gas cylinder with a volume of 25 liters.
A motor obtained after disassembling a refrigerator or air conditioner.
Reducer with built-in pressure gauge.
Reinforced hose designed for high loads.
Blow gun and other executive body.
Armature and wheel.

Work is carried out only if certain tools are available. They are as follows:

Grinder for cutting.
Welding machine for connecting various elements.
Drill to make holes.
Set of wrenches.
Screwdriver.

After finding everything you need, you can begin the actual work.

The procedure for creating a compressor to generate pressure with your own hands is quite simple; you can do it in your own garage. The step-by-step instructions are as follows:

To begin with, find the required gas cylinder, from which the valve is unscrewed and the remaining gas is drained.
After this, the motor is removed from the old air conditioner or other suitable device.
The valve is unscrewed.
The gas cylinder is filled with water.
A drill is used to make holes that are suitable for fixing the valve and reducer.
Protruding elements must be cut off. This greatly simplifies the use of the compressor.
The new connection is welded on to simplify the connection of other equipment.
Experts recommend making a special element that is required to secure the wheels. They significantly simplify the transportation of a compressor from a gas cylinder around the territory.
The next step involves creating a shelf on which the engine will be mounted. When creating a shelf, it is worth considering the fact that it must have increased rigidity. Otherwise, vibration will occur during operation, which will degrade the performance of the installation.
You can make the device more attractive and extend its service life by covering the surface with paint and varnish material.
Electricity and hoses are being connected. Particular attention should be paid to this point, since incorrect electrical wiring can cause a large number of different problems.

In most cases, this element is used to directly equalize the flow in the system. Due to this, the quality of the work performed is significantly improved, for example, when covering the surface with paint and varnish material.

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

How to choose the optimal receiver parameters

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

Installation performance. In this case, a gas cylinder with a capacity of 25 liters is sufficient.
Cyclicity of compressed air consumption. This indicator is characterized by how many times the installation has to be turned on and off.

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

A compressor is an indispensable item in any garage. But buying a good compressor is not cheap. Craftsmen share their experience on how to assemble a compressor for a garage with your own hands from simple and affordable parts.

An air compressor is a reliable assistant. Using a directed jet of compressed air, it is easy to clean your car from dust and increase the pressure in pneumatic tools for the garage.

Using a stream of compressed air, you can always perform high-quality painting of individual parts or the entire car body.

The main requirement for good compressor operation is that the air must flow under uniform pressure and be free of dust and oil. If during painting there are such particles in the air supplied by the compressor, then the paint layer is applied unevenly.

A good factory-made compressor is not cheap, but can be used both for professional painting and for performing high-quality, effective airbrushing. Having studied the principles of operation of such a device, you can make a high-quality homemade one.

The principle is simple - compressed air under pressure is collected in a sealed container (receiver). The pressure in the container can be increased either mechanically (manually) or using automation. Constantly pumping up the pressure manually is inconvenient; automatic adjustment is easier to operate.

In compressors with automation, you only need to ensure that the oil in the pump is regularly changed to prevent rapid wear of rubbing parts.

A stream of compressed air flows through the fitting to the desired device (for painting, for cleaning or for blowing hoses).

How to make a simple compressor - detailed instructions

The simplest compressor can be easily made from a car inner tube. For simple repair work in the garage, such a simple compressor is quite suitable.

We will need the following parts:

We will use an old tube as a receiver; the tire does not need to be removed. The main thing is that it is airtight;
the air blower in such a compressor will be a car pump with a pressure gauge;
You will also need a nipple from the camera, a rubber repair kit and an awl.

The procedure for assembling a simple compressor in five minutes:

Be sure to vulcanize the chamber if there is an air leak;
now you need to install an additional nipple in the chamber, through which air will be supplied to the spray gun;
the second native nipple of the chamber will serve as a safety valve to regulate pressure;
We glue the nipple, seal it with gaskets and connect it to the spray gun.

Important. The nipple from the second nipple must be removed so that the air stream from the chamber is supplied to the spray gun freely.

All that remains is to adjust the required pressure in the receiver. This is done through trial and error. We paint the test surface and ensure that the paint applies evenly. We monitor the pressure gauge - during the process of applying paint, the pressure level should decrease smoothly, and not abruptly.

Using such a simple compressor, you can tint the body or individual parts, but for professional and convenient work you need a more advanced compressor - with automation.

Improved handy DIY compressor

How to make a compressor that will not be inferior to the best Russian and foreign analogues? You will need the following parts:

regular pressure gauge;
gearbox, be sure to choose a gearbox with a filter to prevent oil and moisture from getting inside the receiver;
any relay for adjusting pressure indicators;
fuel filter (for gasoline, not diesel);
water connection for four outlets (internal diameter 3/4);
Diameter adapters will be needed for sealed connections of parts;
large automotive clamps;
receiver;
motor oil - you need a viscosity of at least 10W40, metal paint and an anti-rust additive;
electric toggle switch;
oil hose;
a piece of thick board - this will be the base of the compressor;
syringe;
hardware for fastenings;
silicone sealant and fumlent;
wheels for furniture;
filter for diesel engine.

Half of the components can be found in any garage.

Selecting an engine for a compressor

A good motor for our compressor is spare parts from an old Soviet refrigerator; it already has a start relay, this is very convenient, as it regulates the number of atmospheres in the receiver. You need an engine from an old unit (Dnepr, Donbass, Oka), imported models give lower pressure in atmospheres.

What should be done:

The compressor needs to be cleaned, rust removed, internal parts oiled and the outside painted. There are three outlets on such a compressor - we find out where the supply is and where the outlet of the air stream is, mark it with a cross;
One tube in older models is sealed, it needs to be carefully opened, this will be a hole for adding oil to the compressor.

Important. So that when sawing off the tip, chips do not fall inside the compressor.

pour out the old used oil and fill in the same amount of semi-synthetic oil, it is convenient to pour oil into the compressor with a 2 ml syringe;
We install a plug from the screw and seal it with fume tape;
install an oil filter on the outlet pipe;
We attach the compressor, compressed air cylinder and start relay to the board.

For compressed air, it is convenient to use a 10-liter tank from an old fire extinguisher; no more is needed. This cylinder can withstand pressure up to 15 MPa.

It is not necessary to buy a compressor for painting work or inflating wheels - you can make it yourself from used parts and assemblies removed 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 be well prepared: study the diagram, find it on the farm or buy some additional parts. Let's consider several possible options for independently designing an air compressor.

Air compressor made from refrigerator and fire extinguisher parts

This unit operates almost silently. Let's look at the diagram of the future design and make a list of the necessary components and parts.

1 — 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 pressure gauge; 15 — moisture-oil trap; 16 — pneumatic socket

Necessary parts, materials and tools

The main elements taken are: a motor-compressor from a refrigerator (preferably made in the USSR) and a fire extinguisher cylinder, which will be used as a receiver. If they are not available, then you can look for a compressor from a non-working refrigerator at repair shops or at metal collection points. A fire extinguisher can be purchased on the secondary market or you can involve friends in the search, who at work may have written off fire extinguisher, fire extinguisher, fire extinguisher 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 pressure gauge;
reinforced hose;
water pipes, tees, adapters, fittings + clamps, hardware;
materials for creating a frame - metal or wood + furniture wheels;
safety valve (to relieve excess pressure);
self-closing air inlet (for connection, for example, to an airbrush).

Another viable receiver came from a tubeless car wheel. An extremely budget-friendly, although not very productive model.

Wheel receiver

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

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

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