It is not necessary to buy a compressor for painting works or tire inflation - 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 look at a few possible options For self-design air compressor.
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 - cross; eleven - safety valve; 12 - tee; 13 - receiver from a fire extinguisher; 14 - pressure reducer with pressure gauge; 15 - moisture-oil trap; 16 - air inlet
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:
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.
To paint a car, as a rule, a paint spraying device is used. This is an air compressor and a spray gun connected to it. If you are planning such equipment for your garage, you can make a compressor yourself or purchase a factory model.
It's quite obvious what to buy ready product much simpler. This entails less labor costs. However, self-production is a significant financial saving. In addition, experts say that a homemade powerful electric compressor for a car with a relay and receiver can be much more efficient and durable than a serial product. Below we will tell you how to make a compressor for painting a car under 220V voltage yourself.
DIY compressor for painting cars
Obviously, for work we will need to collect certain materials. So, to assemble a homemade 220V air compressor for painting a car, we will need the following parts:
Materials for a homemade compressor Compiling this list is not difficult. After we have collected everything we need, we can get to work.
We start work from the very beginning important element- an engine that will create the required amount of air pressure. Here we can use a motor from an unnecessary refrigerator.
Its device includes a relay, which will be needed in order to maintain a given air pressure. Experts say that old Soviet models can achieve higher pressures than new imported engines.
We remove the motor from the refrigerator, carefully clean it and treat it with a product to avoid oxidation of the housing. After this it will be ready for painting.
Removing the refrigerator motor Now you need to change the oil in the engine. Semi-synthetic is quite suitable for this - it is no worse than motor oil and has a lot of useful additives.
The motor has 3 tubes: 1 closed and 2 open, through which air circulates. In order to determine the input and output channels, turn on the motor and remember where the air flows in and where it comes out from. The closed tube is used just for changing the oil. When working with a file, we make a cut in such a way as to avoid sawdust getting into the tube. We break the end, remove the oil and pour in a new one, using a syringe for this purpose.
To seal the channel after changing the oil, select a screw of a suitable cross-section, wrap sealing tape around it and screw it tightly into the tube.
We mount the motor together with the relay on a thick board, which will act as a foundation. We choose the position in which it was in the refrigerator. This is necessary because the start relay is extremely sensitive to how it is placed. As a rule, there are corresponding markings on it - adhere to correct location in order for the relay to work stably and correctly.
We mount the motor on the prepared board
An air tank is a necessary element that is necessarily included in the compressor device. It must be designed for a certain amount of pressure in order for the device to work correctly. We can use old containers from ten-liter fire extinguishers as a receiver - they are durable and airtight.
Instead of a start valve, we screw a threaded adapter onto the receiver - for tightness we use a special FUM tape. If the future receiver has pockets of rust, they must be removed by grinding and processing by special means. In order to eliminate pockets of corrosion inside, pour in the product and shake well. Then we install the water cross using sealant. We can assume that the homemade receiver is ready.
We use an old fire extinguisher as a reservoir for compressed air
We attach the receiver from the fire extinguisher together with the motor to a base made of a thick board. We use nuts, washers and studs as fixing means. The receiver must be positioned vertically. To attach it, we take three plywood sheets, in one of them we make a hole for the cylinder. We attach the remaining two sheets to a wooden base and a plywood sheet that holds the homemade receiver. To the bottom wooden base wind the wheels furniture fittings for better maneuverability of the mechanism.
We put a rubber hose on the compressor inlet tube, to which we connect a cleaning filter for gasoline engines. Additional clamps will not be needed since the inlet air pressure is relatively low. To avoid the presence of moisture and oil particles in the air flow, we install an oil-moisture separating filter for diesel engines at the outlet.
Here the pressure will already be quite high, so special clamps with screw fastenings should be used for additional fastening.
The diagram below shows how a homemade automobile compressor is assembled for painting a car. Compressor diagram for car painting Next, we connect a filter to remove oil and moisture to the input of the gearbox, which we will need to decouple the pressure in the engine and the cylinder. We make the connection using a plumbing cross on the left or right side. On the opposite side of the cross we install a pressure gauge to monitor the pressure level in the cylinder. We mount a relay for adjustment on the upper end of the cross.
After painting, our homemade car compressor will be ready for testing. Testing and setting up a homemade compressor for painting cars For testing, we connect a spray gun to the output. We put the toggle switch in the off position and turn on the plug electrical outlet . Set the relay regulator to the highest small value and turn on the toggle switch. For control we use a pressure gauge. We make sure that the relay regularly opens the network at the right moments. Using water with We check how tight all hoses and connections are.
Next, we empty the container of compressed air - after the pressure drops to a certain level, the relay should turn on the motor. If everything works fine, you can try to use the device to paint a suitable object. We look at the quality and make sure that the device works stably and can be used to work on cars.
Air compressor, operating from 220 V, is necessary in a home or garage for various purposes: it is easy for them to inflate tires, make repairs by driving pneumatic tools, blow off dust and chips from the surfaces being treated, and use them as a spray gun. In specialized retail outlets There is a wide range of pneumatic compressors, and such a unit costs quite a lot big money. But if you wish and have certain skills, you can make a compressor at home with your own hands.
Any compressor, or with your own hands, works according to simple principle – the motor forces air into the container, where it is under the required pressure, which is controlled by a pressure gauge. When the pressure drops to the lower limit, the engine begins to operate, and when the set value is reached, it turns off. Depending on the purpose that the compressor will serve, you can make either a simple or a semi-professional device.
The unit is mounted on a base or frame, for which you can use any available material, for example a sheet of chipboard or plywood the right size, where all parts are placed in such a way that they are provided with easy access in case of maintenance, or if necessary, make repairs. Old KamAZ brake tanks, which already have threads for fittings and a condensate drain valve, or an empty fire extinguisher cylinder, are perfect for the role of a receiver.
Sometimes several containers are used, and then the necessary bushings and tubes are welded into them to connect the rest of the system. The design must include a moisture separator and an air filter, which are sold ready-made. Metal or oxygen hoses used for gas welding are used as connecting tubes. From automatic equipment, a starting and pressure switch are purchased separately.
It can be purchased separately, but such devices are not powerful or reliable, and are also quite expensive. For this purpose, it is suitable, which is devoid of such shortcomings, and repairs to such a unit during normal operation are extremely rarely needed. Also you will need the following materials.
A garage compressor is a necessary piece of equipment for your garage. With its help, you can paint a car, inflate tires, and supply air for operating pneumatic tools.
To do this, they are subject to certain requirements in order to create the required air flow with the required pressure. This article explains how to make a compressor for a garage.
An air compressor is always needed in the garage. It can be used both to blow away dust from the surfaces of parts processed with abrasives, and to obtain excess pressure in pneumatic tools.
Often the working life of a compressor is necessary to paint a car, which imposes certain requirements on the air flow created:
The simplest compressor for the garage can be made from an old refrigerator.
To make it you will need to purchase:
Tip: The cylinder is an accumulator for storing air. As work progresses, the pressure will decrease, which is not very important when inflating tires, where no more than three atmospheres is sufficient. But for pneumatic tools this will be insufficient and critical.
Instructions for manufacturing the device are as follows:
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 this! In this article we will try to provide a comprehensive answer on how to make a compressor with your own hands, so that anyone can create this equipment at home.
After all, if you look at it, the essence of the issue is that an air compressor is needed in every garage. Using a compressor, you can pump up the wheels without visiting a service station or tire shop, supply air to the working pneumatic tool or simply blow off dust from the surface being treated. So, let's consider the installation option for painting.
There is a list of specific requirements for a painting station. The main condition is the need for a uniform supply of air, without any impurities. Standard defects that occur due to the presence of foreign particles include graininess, shagreen or cavities on enamel coating. If the paint flows unevenly, drips or matte heels 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 operation of the airbrush. The only drawback of such units is their cost.
To save money and create at the same time functional model, which will not yield professional equipment, you need to familiarize yourself with the theoretical information base or watch a video on the topic “do-it-yourself compressor for painting a car.”
The operating principle of any model, regardless of whether it is homemade or factory-made, is the same. Excessive pressure is created in the tank. The method of air injection is different (manual, mechanical). In the case of manual feeding, there is a significant saving in money, but a lot of energy is consumed. After all, the process requires constant monitoring.
Automatic inflation allows you to avoid these disadvantages, with the exception that the oil for the air compressor requires periodic replacement. Thus, there is a uniform supply of air to switchgear. In theory, this looks extremely simple, so it’s possible to create an efficient compressor station in a short time.
So, we choose to make a painting installation from a regular car camera. List of required materials:
Now you can start making compressor station. The chamber must be checked for leaks; to do this, it must be inflated. If there are air leaks, the problem must be corrected, either by sealing or by vulcanizing with raw rubber.
After which, using an awl, you need to make a hole in the manufactured receiver. A nipple will be placed here, through which a uniform stream of compressed air will come out.
The additional fitting is secured by gluing. A repair kit will help solve 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 original nipple remains, it will serve as a valve and hold excess pressure. Finally, you need to determine the pressure level by spraying paint onto the metal surface. If the enamel lays down evenly, then the installation is working well.
In addition, the pressure value can be checked using 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 be much more effective than it was with a spray can.
The last parting words include the fact that it is necessary to avoid getting water or dust into the car camera in every possible way. So that these particles do not subsequently get into the spray gun, otherwise you will have to re-paint.
As a result of proper operation, the created installation will work for a long time, but it is still better to automate the air pumping.
Experts have repeatedly commented that homemade compressor units have a longer service life. Moreover, comparisons were made with domestic and foreign models.
This is natural, because the installation is being manufactured with my own hands. Therefore, we will consider the option of how to make a compressor from a refrigerator that will not be inferior even to products from famous companies. So, for its manufacture you need the following list of materials:
To simplify the procedure, the engine can be a compressor from an old refrigeration unit Soviet model. There's one here positive point, namely the presence of a compressor start relay.
Soviet models are superior to their foreign competitors, producing more high pressure. After removing the executive unit, it is necessary to put it in order, freeing it from accumulated rust.
A rust converter will help treat the compressor to prevent further oxidation. In this way, the working motor housing will be prepared for subsequent painting.
After completing the introductory part, you can start changing the oil. After all, if you don’t cheat, there are very few refrigerators that have managed to undergo regular maintenance or oil changes. However, this course of events is also completely justified, because in this case the system is completely isolated from atmospheric influences.
So, semi-synthetic oil is quite suitable for this procedure. Moreover, it is no worse than compressor oil and has a sufficient number of useful additives.
We go further 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 air moves, you need to apply power to the compressor for a short time. Then remember or write down which air duct draws in air and which, on the contrary, releases.
The purpose of the sealed tube is for routine oil changes. Therefore the closed end should be removed. A needle file will help us with this; we need to make a notch around the circle of the tube. In this case, you should make sure that chips do not get inside 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 determine its volume for subsequent replacement. Then we take a syringe and fill in the semi-synthetic, but in a larger volume than was drained.
When the oil is filled, you need to turn off the engine lubrication system. This can be done by selecting the required screw, after which this screw is wrapped with fum tape and screwed into a tube. This is a good time to remind you that oil droplets will sometimes leak out of the supercharger air outlet tube.
Therefore, an oil and water separator for a compressor will come to the rescue.
When the indicated work is completed, it is time to begin assembling the installation. You need to start by strengthening the engine with a starting relay on 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 spatial position. To determine more precisely, an arrow should be drawn on the top cover. It is important to maintain accuracy here, because the correct switching of modes will depend on the installation of the compressor.
An excellent solution to the problem would be fire extinguisher cylinders. This depends on their ability to withstand high pressure; in addition, the cylinders have a significant margin of safety and are excellent as attachments.
So, let's take the OU-10 fire extinguisher as a basis. Its working volume is 10 liters. According to technical characteristics the cylinder can withstand pressure of 15 MPa. Now we 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 internal removal will require patience. Therefore, we pour the converter inside the cylinder and shake the contents.
After cleaning, you can screw in the plumbing cross. Thus, two working parts of our compressor installation were prepared.
To make it easier to store and move working parts, it is best to place them on one base. As mentioned earlier, you need a wooden board, which will serve as the basis for securely fastening the engine, as well as the fire extinguisher body.
Therefore, we will use threaded rods as engine mounts, which must be threaded through the drilled holes. Of course, in addition to everything you will need nuts (washers).
Then you need to position the receiver in a vertical position; 3 sheets of plywood will come in handy here. In this case, you need to make a hole in one sheet for the cylinder. The remaining sheets are attached with self-tapping screws to the main board and glued to the sheet that holds the receiver.
But, the day before, you still need to hollow out a recess in the wooden base for the bottom of the receiver. And finally, to make the structure maneuverable, you need to screw furniture wheels to its base.
After everything has been done, you need to protect the system from possible dust. A gasoline coarse fuel filter will come to the rescue. It will serve as an air intake.
This will involve the rubber hose and the supercharger inlet tube. It should be noted that there is low pressure at the inlet of the compressor station, which means that strengthening the contact using automotive clamps is not necessary.
Thus, we have created an input filter for the compressor unit. At the outlet of the station, you need to install an oil and water separator that will block the entry of water particles. The power system filter will be used here. Due to the fact that the pressure at the outlet of the compressor station is increased, automobile clamps will be used from this point.
So, the turn came to the oil-water separating filter. IN in this case it must be connected to the input of the gearbox, which is needed to decouple the reservoir and the pressure output of the supercharger. This means that we screw the outlet into the previously prepared cross on the left side, and screw in a pressure gauge on the right, thanks to which we can control the balloon pressure. You need to screw in the adjusting relay on top of the cross.
The presence of an adjustment relay will make it possible to set the height range of the receiver pressure, as well as interrupt the power supply circuit in the supercharger in a timely manner. 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 drops below the set level and turn off if the specified parameters are exceeded.
The required pressure is adjusted on the relay using two springs. The function of the large spring is to create a minimum pressure, while the small spring is responsible for regulating the upper limit, essentially setting the shutdown limit for the compressor unit.
PM5 (RDM5) were primarily 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 for the zero connection of the 220 V network, while the second contact goes to the connection with the supercharger.
We conduct the network phase through a toggle switch to connect to the second input of the compressor station. If there is a toggle switch in electrical diagram, we will be able to quickly disconnect the system from the network, which will save you from running around towards the outlet.
Naturally, all connections must be soldered and carefully insulated. After this, you can paint the finished installation and carry out test tests.
So, after assembling the structure, it is quite natural to check it. To do this, you need to connect a spray gun, or, alternatively, a pneumatic gun. Then, without turning on the toggle switch, we connect the plug to the network.
We set the control relay to minimum pressure and supply power to the supercharger. Don't forget about the pressure gauge, which allows you to control the pressure in the tank. After we managed 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 has passed the leak test, you can bleed any remaining air from the reservoir chamber. Please note that if the pressure drops below the established limits, the relay must start the compressor. If all systems are in working order, it is possible to begin painting any part.
At the same time, you should not burden yourself with pre-processing of the metal. 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 any product is painted in a uniform layer. In addition, it is very important that this entire process occurs with a minimum amount of blower activation.
Thus, we can summarize the results. Making a car compressor is a lifting activity for every car enthusiast.
Of course, it’s hard to argue with the fact that the second version is more complicated and will take longer to produce, but thanks to the system automatic control pressure, as well as the presence of a supercharger start-up, working with such equipment will be a complete pleasure.
In addition, you will no longer need to control the receiver's camera. Such a station will allow you to paint a car, a fence in a village or a garage door.
For long-term 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, unscrew the filler hole, put a hose on the tube and pump out the waste. Fresh oil can also be pumped in using a syringe. Filters are changed as needed, including if the rate of filling the tank chamber decreases.
Today the market is filled with a variety of compressor equipment. There are piston units, vibration units, screw stations and other devices that are manufactured for different purposes. Ready installations can be purchased at auto parts stores or on specialized websites.
A large selection 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 from well-known brands However, an expensive product will pay for itself in the case of professional car repair. Little-known products can let you down, so it’s better not to take risks.
Often budget options installed low quality materials. There are frequent cases of installations failing due to instantaneous 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 advantage is technical specifications. For example, according to statistics, refrigerator compressors last for decades. Regarding the fire extinguisher, we can say that this product has a tenfold safety margin.
Therefore, it is better not to buy something that you are not sure about. In addition, having studied the current material, you know that you can make a compressor with your own hands, even at home. A well-made device will be the envy of your garage neighbors.
Let's start with the design technical requirements to the fruit of his own engineering. Let's say it all started with the purchase of a new airbrush. double acting. Therefore, the issue of manufacturing a compressor unit with a receiver became extremely necessary.
A dual action airbrush has the ability to control the air flow as well as lock and open the air duct. In Europe, such a device is used with a separate compressed air cylinder. So, a compressor with a reservoir serves as a container for collecting air, and the airbrush uses this air.
Of course, the main component is the compressor. This is where it comes to the rescue old refrigerator, from which you can remove an excellent compressor. To do this, you can go through websites 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 and visit the website. So, in our case, the manufacturer is Danfoss. On the company website we download technical description compressor.
Next, we’ll consider an option like a DIY compressor receiver. Here, of course, you need a reservoir that was made to contain gases or can withstand high pressure. It is optimal if such a container meets the requirements of GOST. Therefore, we immediately exclude containers of the type plastic canister or bottles. Let's look at the tank options:
Once we have decided on the compressor and selected a suitable product for the receiver, the next step is to combine them. In addition, it is necessary to solve the problem of air supply to the airbrush.
You can start with a unit that is attached directly to the receiver and will ensure air distribution. It must be recalled 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 the relay would be RDM-5, which is used for plumbing systems. This model is widely available for sale, and the good thing is that its connecting element is designed for external inch threads.
Then we determine the pressure indication in the receiver. For this we need a 10 atmosphere pressure gauge; it also has a suitable connection size. And we will also need a static device.
Next we are working on the air preparation unit. Pressure must be applied to the hose that leads to the airbrush. Accordingly, there is a need for a gearbox with a pressure control limit of up to 10 atmospheres, and it is desirable that it be accompanied by a pressure gauge and an oil separator filter.
Using a pressure gauge, we will monitor the pressure, and the filter will ensure that particles of compressor oil do not enter 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, turns, and tees. We take inches as the base size. To determine the quantity, you need a diagram of the air distribution and preparation unit.
We will also need external and internal adapters. If you wish, you can make a plan diagram of how to make a compressor. The next stage is placement finished design. Chipboard boards may be an option.
Of course, in order not to swear 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. True, long bolts may be needed. So, let’s summarize the planning stage with a list of components:
The ideal would be to dismantle the fire extinguisher assembly and weld the adapter fitting. Alternative way, this is to unscrew part of the valve, leaving the internal mechanics and removing the control element, then screw an adapter with internal inch thread, to another adapter from 1 to 38.
Using an adjustable wrench, twist the adapters according to the diagram. Next, we install the reducer, pressure gauge, pressure switch and adapter for a flexible hose.
The next step is to screw the wheels to the chipboard sheet. Since the structure will be two-level, you need to drill holes for the studs. After that, we put the 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 fasteners 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. To do this, markings are made, holes are drilled, and the upper and lower floors are bolted together. After which a compressor is installed on the second floor. Silicone gaskets are suitable to reduce vibration.
When installing the compressor, we install washers. We screw the air distribution module to the tank. Using a hose and clamps, tightly connect the compressor outlet and the inlet of the air preparation unit.
Now it's time to work with the wiring diagram. It would be appropriate to install a jumper. Protective elements will also come in handy. The connection line must pass through the relay and 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. If there is no ground wire, connect the neutral wire to the relay ground terminal.
Already from the relay, the phase wire and the neutral wire go to the compressor station drive starting device and are connected according to the diagram to the required terminals. Next, install a jumper on the terminal block of the starter by soldering.
It will ensure the connection of the windings to the phase. Cables can be wrapped in plastic ties. We check and start the installation. Then we paint it.
