When carrying out construction, installation and finishing work, pneumatic tools are widely used. Compressed air is used to operate pneumatic tools. Its production is carried out using compressor units. One of the main components of the unit is the compressor receiver.

Why do you need a receiver in a compressor?

A receiver is a container for storing liquids or gases during compressor operation. The device performs the following tasks:

Accumulates the working mixture during compressor operation.
Delivers compressed air to one or several consumers.
Regulates the pressure of the working mixture at the outlet of the compressor.
Accumulates and removes condensate that forms.
Helps reduce vibration, noise and load during compressor operation.

The compressor receiver is made of high strength material. To store liquid and gaseous substances under a load of up to 2.0 atmospheres, containers made of high-strength plastic and rubber are used.

To store substances under a load of over 2.0 atmospheres, metal containers are used. The material used for them is steel with the addition of special additives. These additives increase the strength, anti-corrosion and thermal resistance of steel.

The basis for the future receiver

To make a receiver for a compressor with your own hands, use a fire extinguisher or a gas cylinder. Gas containers are considered the best option for making a receiver. The advantages of gas cylinders are:

spacious volume (up to 100 l);
light weight (from 30 to 70 kilograms);
ability to work under high pressure.

Gas containers are tested under loads of up to 25 atmospheres. They are used for storing and transporting various gases and liquids. To prevent leakage of the gas-air mixture, a valve with reliable gaskets is used in the neck of the cylinder.

The disadvantage of a gas cylinder is the lack of a tap for draining condensate. Some experts consider this a significant disadvantage.

Advice: Condensate draining must be carried out at least twice a year - in spring and autumn.

Other experts do not see any difficulties in this circumstance. To remove condensate, open the shut-off valve, invert the container and drain the condensate.

Required tools and materials

To manufacture a receiver for a compressor, the following equipment is used:

cutting tool;
vice or welding machine;
adjustable wrench;
sledgehammer or hammer.

Attention! When cutting a container with a grinder, first make a longitudinal cut along the length of the container. Then transverse cuts are made. After this, cut off the upper or lower part. Changing the order of operations can lead to sudden depressurization.

A grinder is used as a cutting tool. As a last resort, use a hacksaw.

The vice is designed to fix the cylinder and prevent it from turning when removing the valve.

An adjustable wrench is used to unscrew the valve lock nut.

A sledgehammer or hammer is intended for beating off the cut parts of the vessel and tapping the valve when unscrewing.

The valve screws are cone-shaped. This form of thread ensures maximum tightness of the cylinder. Unscrewing a valve with such a thread requires a lot of force. To increase torque, the wrench handle is increased using metal profile rectangular or round shape.

Advice: Instead of a factory valve, you can use a regular ball valve of the appropriate size.

Materials used:

two crosspieces with M15 thread;
gearbox with pressure gauge;
safety valve;
ball valve – 3 pcs;
rubber hose.

When making a receiver for a compressor with your own hands, the parts used are connected in series to each other.

How to make a receiver with your own hands

The receiver is assembled in the following order:

Clamp the bottom of the vessel in a vice.
Using an adjustable wrench, remove the valve.
Remove any remaining gas in the container.
Remove the cover with the hole from the locking mechanism.
Clean the container outside and inside from rust and dirt.
Screw on the cap with the hole from the locking mechanism.
The surface of the cylinder is cleaned of rust and dirt, primed and painted.
Insert the adapter and attach the first cross.
A safety valve is attached to the upper pipe of the first cross.
A ball valve with a fitting for connecting an additional receiver is screwed to the lower end.
A second cross is attached to the left pipe.
A pressure gauge is attached to the upper end of the second cross.
A ball valve is inserted into the lower pipe to supply air from the compressor.
An oxygen reducer is connected to the left pipe through a ball valve.
A hose is connected to the reducer to connect the consumer.

Do not use the cutting tool until complete removal remaining gas from the container. Flame sparks are generated when the cutting tool is in use. A spark entering a vessel may cause an explosion.

Advice: To remove residual gas, the cylinder is filled with water and kept filled for several days. After a long soak, the water is drained. The filling and emptying procedure is repeated several times.

Anti-corrosion detergents are used to remove rust and dirt.

Single-chamber and dual-chamber receiver device

The compressor receiver consists of two main elements:

container (cylinder);
gearbox

The reducer is designed to regulate the pressure when the working mixture leaves the vessel.

There are two types of gearboxes:

single-chamber;
two-chamber.

Single chamber gearboxes

Such gearboxes have one low-pressure chamber. The gas from the cylinder first enters the high pressure chamber. There is a shut-off valve between the chambers. Under high load the valve is in the closed position. The valve is opened using a special screw on the gearbox.

Gas from the high-load compartment enters the low-pressure chamber. The working mixture is supplied to consumers.

To control the pressure in both chambers there are pressure gauges. A safety valve is used to regulate the load. When the load increases above the set norm, the valve automatically opens and gas flows out.

The simplicity of the device allows the use of single-chamber gearboxes for the production of standard compressors.

Double chamber gearboxes

Receivers with such reducers have two low-pressure chambers. They are located sequentially, one after another. The workload reduction process is smoother and more precise.

Double-chamber gearboxes are capable of operating at low temperatures. They differ in the complexity of their design. Used in industrial installations with high compressor power.

Two-chamber gearbox design

Device with pressure sensor

Pressure sensors are used to continuously monitor the operation of the compressor unit. They perform the following functions:

monitoring the level of gas or liquid in the receiver;
measuring the flow rate of the working mixture.

There are two types of pressure sensors:

sensor for measuring absolute value;
sensor for measuring excess value.

The main measuring element of the sensor is a ceramic membrane. It consists of a ceramic cell. The ceramic cell is a capacitor. The capacitor consists of a ceramic substrate and a conductive membrane coating.

Under the influence of the working mixture, the membrane is deformed and the value of the electrical capacitance changes. The absolute pressure cell is a closed system. It is used to measure pressure relative to vacuum.

There is a hole in the ceramic substrate of the gauge pressure sensor for air access. The measurement is carried out relative to the ambient pressure force.

Ease of manufacture and a wide selection of available materials allow you to use a homemade receiver in the household. When operating the compressor unit, it is necessary to comply with the rules for operating pressure vessels. Compliance with these rules will ensure safe operation of the installation for many years.

The compressor is a rather complex engineering structure, which includes many components and assemblies, including such as a receiver. This is the name of the vessel in which the compressed gas produced during the operation of the compressor is stored.

Why do you need a receiver in a compressor?

The receiver included in the supercharger provides a solution to several complex problems, in particular:

Guarantees stable pressure of the working medium transported to consumers.
Provides gas transportation at a time when the compressor begins to operate intermittently, or an additional consumer is connected to the air supply system.
Cleaning the compressed air mixture from accumulated moisture.
The accumulation of gas in this container leads to a decrease in vibrations in the compressor. This in turn reduces the level of force loads affecting the foundation.
To perform work that involves production large quantity gas is standard, the installed vessel may not be enough, then instead of purchasing and installing a stronger compressor, an additional capacity is installed on the old compressor.
The receiver ensures that the compressor is turned on at a certain frequency, and this leads to a decrease in electrical energy consumption.

In essence, a compressor receiver is a container of a certain size. For mobile compressors, containers with a volume of 50 to 100 liters are used. For stationary units, receivers with a volume of up to 1000 liters are used.

Filters are installed on them, which purify the gas from moisture; in addition, the design of the receiver includes condensate drains and shut-off valves. It is used to connect the compressor to consumers.

For the manufacture of receivers, corrosion-resistant steels 10HSND or 16GA2F are used, meanwhile, in rare cases, polymers or high-strength elastomers are used for low-power units.

Manufacturers produce two types of containers - horizontal and vertical. The first version is used for mobile type compressors, the second version is used for stationary compressors.

Each of the versions has its own advantages and disadvantages. For example, in a vertical design it is easier to drain water, while horizontal ones are more compact in size and require shorter pipelines.

How to choose the optimal receiver parameters

Like any technical product, the receiver has a number of technical parameters. Among them are:

Volume, l.
Humidity.
Operating parameters, that is, limit values of humidity and temperature.
Characteristics of the installation location of the compressor unit. It must be installed away from sources of heat, fire and explosive substances. The presence of foreign particles in the air is undesirable, for example, in procurement areas.

Safety rules state that it is unacceptable to use receivers that have not passed the appropriate test, on the surface of which there are mechanical damage in the form of cracks and traces of corrosion.

The selection of a receiver is carried out on the basis of a fairly simple calculation:

The required flow rate of the air mixture, the duration of the flow rate, and the maximum operating pressure are determined.
Using special calculation tables, they exist both in paper form and as Internet applications. For example, with a productivity of 0.1 cubic meters per minute, a maximum load duration of 5 minutes and within a pressure range of 3/4 (min/max), the volume of the receiver will be about 500 liters.

This method of calculation is focused on the time required to completely empty the container.

There is another technique based on the ratio of the volume of the vessel and the power of the air compressor. In practice, the following ratios are used:

Power 5 kW, volume max – 100 l.
Power 10 kW, volume max – 300 l.
Power 20 kW, volume max - 550 l.

There are also experimental dependencies, for example, the volume of the receiver cannot be less than the amount of air that the compressor can produce for 8 seconds of operation. For example, the flow rate is 400 liters per minute, respectively, the volume of the poppy must be at least 53 liters.

Do-it-yourself additional receiver for a compressor

Some work performed in a home workshop or garage requires compressed air. And a situation may arise when a household compressor cannot cope with the task. In this case, the situation can be resolved by installing an auxiliary receiver on the existing unit. This device can either be purchased at a specialized store, for example, car spare parts. There you can buy a receiver for the KAMAZ pneumatic system, or make it yourself.

Most of the receivers offered are made for a specific model and are distinguished by a high price. Depending on the planned size of the DIY container, you can use either a propane cylinder or a fire extinguisher body.

The procedure for making a homemade receiver

The sequence of manufacturing an additional vessel looks approximately as follows.

Cleaning an old vessel from gas residues. To do this, you will need to clean it of gas residues. The inlet valve is removed, while using an electric tool, for example, an angle grinder, gas residues may remain in the housing.
The vessel is filled with water and allowed to stand for 24 hours. Then it is drained and the internal cavity is cleaned of dirt.
After this, splitters under the sleeves are welded into the cylinder, but it is also permissible to install threaded fittings; to increase the tightness when installing plugs, it is necessary to install sealing gaskets.
A homemade receiver must be painted with weather-resistant paint.
A condensate drain is installed in the assembled and painted maneuver - its place is at the lowest point of the tank, and a pressure gauge is installed in the upper part. The brand of condensate drain must be consistent with the compressor capacity and thread sizes. The cost of such a device ranges from 2500 to 3000 rubles.

When operating a condensate trap, we must not forget that its installation on an auxiliary gas storage tank is mandatory. Before switching on the operating load, it is necessary to check the condition of the electric drive to ensure that it can be operated with an auxiliary gas container.

To do this check, you need to turn on the compressor and use a flow meter to check the pressure surge during long-term operation (about 20 minutes).

If the minimum pressure corresponds to the declared characteristics of the supercharger, then operation of the assembled structure is quite acceptable. If the pressure drop is below the permissible level, then the use of this equipment is in question and it is undesirable to use it.

The use of an air receiver serves several key purposes

Using a compressed air storage vessel allows the compressed air to be stored in the air supply system. Improve the quality of the supplied air mixture; when passing through this container, the air flow is dried, foreign particles settle down and do not enter the pneumatic line. In general, the use of a receiver leads to an extension of the operating life of the compressor.

Advantages of horizontal receivers

The obvious advantages of horizontal containers include stability. This type of construction provides high resistance to vibration and other external influences. On the other hand, a horizontal layout requires more space to accommodate the compressor.

Advantages of vertical receivers

The use of vertical containers for storing compressed air makes it easier to install the device in a specific location and saves space. This is especially true in the case of constructing a series or parallel connection of containers.

Manufacturers present to consumers a wide range of the lineup vertical air storage devices

Capable of operating only from receivers. These devices are responsible for the pressure inside the system. Many modifications are made with relays that differ in clamping force. It should also be noted that receivers can be equipped with sensors. Filters are most often used with clamps. If necessary, you can make a receiver for the compressor yourself. However, it is important to consider the type and capacity of the compressor unit.

40 liter devices

Making a receiver for 40 liters is quite simple. First of all, a camera for the device is prepared. Typically, stainless steel sheet is used. Experts say that the lid should be welded last. It should also be noted that there are two-chamber modifications. The easiest way is to use a low conductivity relay. Homemade modifications, as a rule, are not equipped with sensors. Gearboxes for devices are selected of the chain type. In this case, valves with a tee are used to purge air.

60 liter modifications

An additional receiver for a 60-liter compressor can be made with two chambers. Experts say that the sheet of metal should be at least 1.3 mm thick. Tees are most often installed next to the relay. Receivers of this type must be equipped with two filters. In this case, the gearbox should be installed with an adapter. 60 liter modifications are great for low power compressors. The maximum pressure indicator for systems is 6 bar. It is also important to note that only the duct valve should be used during assembly.

80 liter device

Air receivers for an 80-liter compressor can be made with two relays. Experts say that filters are selected with a large diameter. The outlet pipe of the receiver should be in the upper part. Intermediate filters are mounted via an adapter. It should also be noted that modifications with stops located inside the chamber are considered common. The pressure parameter for receivers of this type is approximately 10 bar. They use wired relays. The maximum compression force is 3 N. Tees for modifications are selected with a diameter of 2.2 cm. It should also be noted that sensors are often installed in devices to monitor pressure levels.

Single Valve Models

How to make a receiver for a compressor with one valve? Housing in in this case used for 30 liters. You can also consider more compact modifications. To assemble the receiver, the camera is first prepared. The hole for the gearbox is welded to a small diameter. Experts recommend using only wired relays with a tee. The diameter of the outlet pipe for a 30-liter modification should not exceed 2 cm. The check valve is mounted at the base of the filter. It should also be noted that modifications with two outputs are considered common. They are great for 10 kW compressors. In this case, the pressure in the system can be maintained at 5 bar.

Two valve device

The receiver for a compressor with two valves is assembled with a capacity of 40 liters or more. On average, the pressure for models of this type is 4 bar. The devices differ primarily in relay conductivity. Their maximum clamping force is 7 N. Many modifications are made with a contact gearbox with two outputs. If you are assembling a simple modification, then it is more advisable to use a tee without a sensor. It is also important to note that a check valve should always be installed behind the filter. Experts say that the outlet pipe is welded last.

Single chamber devices

The single-chamber modification is suitable for compressor units of different capacities. Devices of this type are actively used in large factories. Modern models are distinguished by a high pressure parameter. They use a safety valve and have a protected gearbox. To assemble a single-chamber receiver yourself, it is recommended to make a container for it. The relay is used with conductivity from 1.2 microns. In this case, the downforce must be a maximum of 12 N.

Check valves are installed behind the filter. The gearbox should be located in the rear part of the tank. The optimal diameter of the outlet pipe is 2.2 cm. However, it is important to consider the volume of the chamber. If you assemble a 40-liter device, then the intermediate filter is installed behind the relay. It should also be noted that before using the equipment, the chamber must be checked for sealing.

Two-chamber modifications

A two-chamber homemade compressor receiver is made with a 60-liter tank. Some devices are made with a sensor. To assemble the model yourself, you will need to make a camera and also make a hole for the pipe. The relay is usually used as a wired type. It is more advisable to use adapters with wraps. Experts say that the receiver must withstand high pressure. The optimal diameter of the outlet pipe is 2.2 cm. Valves for devices are selected from steel or aluminum alloy.

Using gearboxes with interlocks

It is difficult to assemble a receiver for a compressor with blockers. First of all, it is important to note that the models must have a high permissible pressure parameter. Device filters only fit on pads. It should also be noted that the relay must be installed in front of the gearbox. Experts say that receivers of this type are produced with small tees. Some modifications are assembled with carriers. Sensors are used to normalize the pressure inside the chamber. Check valves are installed with baffles. They are able to pass air only in one direction.

Devices with pressure sensors

The compressor receiver is produced with cylinders of different capacities. Some devices are suitable for powerful compressor installations. However, in this case, much depends on the diameter of the pipe. If we consider models with one outlet, then their permissible pressure indicator is on average 5 bar. In this case, the downforce can reach a maximum of 12 N.

Check valves can be installed with or without pads. Gearboxes can be found in different conductivities. Tees on receivers are installed with a diameter of 2.4 cm. If we consider simple modifications, then they use only one filter. The permissible pressure indicator for receivers of this type is about 2 bar. They are suitable for compressors with a total power of 8 kW and above.

The benefits of a compressor when performing various tasks in a workshop or garage are undeniable. This unit has long ceased to be the property of construction crews and departmental vehicle fleets. Here is a superficial list of what can be done with a compressor:

Painting work
Sandblasting of any materials
Blowing debris out of hard-to-reach cavities of units
Cleaning the area
Tire service
Working with pneumatic tools.

An air compressor can be purchased at a store. Moreover, kits of any power and performance are offered.

However, such equipment is not cheap: if you do not plan to make a profit from it, purchasing it simply to facilitate manual labor may seem impractical. Therefore, many home craftsmen try to make a compressor with their own hands.

Important! High pressure air is a source of increased danger. Careless assembly or use of homemade equipment can result in serious injury.

The simplest (and relatively safe) homemade compressor can be built from a regular car accessory. We will talk about a ready-made electrical device - a compressor for inflating wheels.

It would seem, where should it be used other than for its intended purpose? Design features do not allow large volumes of air to be supplied per unit of time.

This parameter deserves a separate explanation:

The compressor has two important characteristics:

The ability to create high pressure without additional load on the engine.

Automotive units are in complete order with this. You can safely build up pressure up to 5-6 atmospheres. True, pumping up a wheel to the typical 2.5-3 units takes a good ten minutes (at zero initial pressure). During this time, inexpensive devices may simply overheat, so breaks are required.

This occurs due to the low performance of automobile compressors.

Performance

The ability to produce a certain volume of air “over the mountain” per unit of time. The higher it is, the faster the container is filled, and the more intense the flow from the nozzle when using compressed air directly.

To combine these qualities, a large volume of the piston group of the unit and a powerful engine with high speeds are required. Plus, it is necessary to ensure cooling of the cylinders, otherwise the compressor will overheat and jam. Such devices exist; even turbines can be used as a working unit.

But the cost of the equipment does not allow it to be used en masse, especially in everyday life.

Simply put- either power or performance. How to get out of a vicious circle? Use storage capacity– receiver. In industrial designs, this is a steel cylinder, which is slowly filled by a powerful, but not very efficient compressor.

Homemade low-power compressor from an electric motor from a toy. A simple solution to a pressing problem. Such a compressor is quite suitable for supplying air to an aquarium. How to make it with your own hands in detail step by step in this video.

Once sufficient pressure has been created, a sufficiently large volume of air can be supplied from the receiver in a short time. Then you need to wait until the compressor restores pressure.
This is how all units work. including those installed on vehicles with air brakes.

Our “Kulibins” have long learned to create a semblance of industrial installations using an auto-compressor. We take a spare tire, use our favorite “Berkut” to fill it with 3-4 atmospheres (the main thing is that the tire does not burst), and the high-pressure paint sprayer is ready.

The same device is used for purging when servicing the engine or suspension. Only instead of a spray gun a blow gun is used.

Automation is not required; it is enough to control the pressure manually using the built-in pressure gauge. Of course, you can’t start a pneumatic tool with such a unit, and you can’t make a sandblasting machine out of a wheel.

Air compressor from a fire extinguisher or gas cylinder

If you have a powerful auto compressor for inflating wheels(for such a case you can buy it), you can easily make a full-fledged air unit of medium power. It is enough to purchase an old carbon dioxide fire extinguisher or a gas cylinder and connect it to a ready-made “rocker”.

There are nuances that must be observed:

The donor container should not have any corrosive or mechanical damage
The pressure margin should be 100% of the planned one. That is, if you expect to “stuff” it up to 5 atmospheres, then the guaranteed rated strength must withstand at least 10 atmospheres
It is necessary to install a sensor with an emergency switch. When the pressure reaches the nominal value, the compressor will turn off.

Important! Don't rely on your own attentiveness. If you overinflate the wheel, it will simply burst, causing a lot of noise and dust. If a steel cylinder bursts, scattered fragments can lead to severe injuries, even death. Your container is unlikely to be new, so the safety margin is even lower.

As a last resort, install a mechanical emergency pressure relief valve. And of course, the system must have an autonomous pressure gauge (in addition to the one installed on the compressor)

The structure must be stable; it is useful to make a steel sheathing in case the receiver ruptures

If you rarely use the unit you have built, do not leave the pressure high for long periods of time. 0.5 atmospheres is enough to maintain tightness.

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

The auto accessories option is good for its accessibility. However, power, performance, and most importantly, the duration of continuous operation, leave much to be desired. There is a proven option - a compressor from the refrigerator. The cost part depends on your ability to find shareware components.

And I must say, the unit turns out no worse than the factory one.

And so, what is required for production. An exhaustive list that takes into account all the nuances. It can be shortened, with the exception of security elements:

Compressor from a household refrigerator (conditionally free)
Receiver container: this can be a fire extinguisher, a gas cylinder, or a homemade one welded from a thick-walled pipe and sheet iron. The latter option is convenient from the point of view of fittings placement, but the issue of welding reliability is very important. The cost also tends to zero
Air fittings: tubes, hoses, fittings, tees, air inlets

Working pressure regulator (reducer)

Pressure gauge (if there is a gearbox = 2 pcs.)

Inlet air purification filters (to preserve the compressor piston group)

Oil or water separator at the outlet (relevant for compressors with “wet” lubrication)

Pressure switch (controls the operation of the compressor)

Emergency valve (required for any configuration!)

The block diagram is shown in the illustration:

In principle, this “constructor” is not difficult to assemble. There are nuances when connecting a compressor from a refrigerator.

The so-called ones are quite rare. “dry” piston groups - with graphite seals without the use of lubricants. If you get your hands on such a copy, consider yourself lucky. In other cases, the compressor is literally flooded with oil.

This is not a problem for freon, but in clean air for work, a drop of lubricant is useless. Therefore, the receiver first acts as an oil separator. which is equipped with a drain plug and a specialized filter. There is no need to remind you about the tightness of all connections, and everything is clear.
Full-fledged silent compressor from a refrigerator with your own hands, video instructions.

Such a unit will cope well with tire fitting, painting, blowing, and even ensuring the operation of pneumatic tools. True, with intense air consumption, you will have to stop often to restore pressure. If higher power is required, there are more productive developments.

DIY high pressure compressor

If the crankshaft of an internal combustion engine is driven by pressure from the combustion of the fuel mixture, why not start the process in reverse?

Using an internal combustion engine as a compressor is not just possible. You get a productive and powerful unit, and the piston group has a good margin of safety. The main question is which drive to use. Considering the total energy intensity, an electric motor with a power of at least 3 kW is suitable.

DIY high pressure compressor from a car engine

If you wish, you can find such a unit in decent condition at a reasonable price. Well, purchasing a live motor from a Zhiguli is not a problem at all. A gearbox is not needed, nor is a starter group. The ignition, intake and exhaust systems are also removed.

For a homemade compressor to work, a lubrication system, cooling system, and a sealed piston group are sufficient. The timing belt is not involved in the process; the camshaft can be removed along with the belt. We don’t touch the exhaust valves, we’ll just check the tightness. But at the inlet you need to install weaker springs.

The valves must freely supply air to the pistons.

Pressure is pumped through spark plug wells. Fittings with ball valves that operate for release are screwed into them. Four pipes are combined into a ramp, and a common pipeline supplies compressed air to the receiver. Of course, the capacity must be appropriate. Such a compressor can produce pressure of tens of atmospheres.

If you are serious and you have an old car engine, for example, from a VAZ 2108 like in this video, then after watching the detailed assembly instructions you can assemble your own homemade compressor from an internal combustion engine.

Result:
Depending on your needs and financial capabilities, you can assemble a unit of any level of complexity and performance. Space technologies are not used, but design safety issues come first.

How to make a receiver for a compressor with your own hands

Compressor units can only operate from receivers. These devices are responsible for the pressure inside the system. Many modifications are made with relays that differ in clamping force. It should also be noted that receivers can be equipped with sensors. Filters are most often used with clamps. If necessary, you can make a receiver for the compressor yourself. However, it is important to consider the type and capacity of the compressor unit.

40 liter devices

Making a receiver for a 40-liter compressor with your own hands is quite simple. First of all, a camera for the device is prepared. Typically, stainless steel sheet is used. Experts say that the lid should be welded last. It should also be noted that there are two-chamber modifications. The easiest way is to use a low conductivity relay. Homemade modifications, as a rule, are not equipped with sensors. Gearboxes for devices are selected of the chain type. In this case, valves with a tee are used to purge air.

60 liter modifications

An additional receiver for a 60-liter compressor can be made with two chambers. Experts say that the sheet of metal should be at least 1.3 mm thick. Tees are most often installed next to the relay. Receivers of this type must be equipped with two filters. In this case, the gearbox should be installed with an adapter. 60 liter modifications are great for low power compressors. The maximum pressure indicator for the systems is 6 bar. It is also important to note that only the duct valve should be used during assembly.

80 liter device

Single Valve Models

How to make a receiver for a compressor with one valve? In this case, the housings are used for 30 liters. You can also consider more compact modifications. To assemble the receiver, the camera is first prepared. The hole for the gearbox is welded to a small diameter. Experts recommend using only wired relays with a tee. The diameter of the outlet pipe for a 30-liter modification should not exceed 2 cm. The check valve is mounted at the base of the filter. It should also be noted that modifications with two outputs are considered common. They are great for 10 kW compressors. In this case, the pressure in the system can be maintained at 5 bar.

Two valve device

Single chamber devices

The single-chamber modification is suitable for compressor units of different capacities. Devices of this type are actively used in large factories. Modern models are distinguished by their high pressure parameters. They use a safety valve and have a protected gearbox. To assemble a single-chamber receiver yourself, it is recommended to make a container for it. The relay is used with conductivity from 1.2 microns. In this case, the downforce must be a maximum of 12 N.

Two-chamber modifications

Using gearboxes with interlocks

Devices with pressure sensors

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Do you know how to assemble an air compressor from scrap materials?

An air compressor is installed not only in cars with internal combustion engines - this equipment is used to power pneumatic tools in industry and other industries. The main operational characteristics of an air compressor are operating pressure and capacity in liters of air per minute.

The following types of air compressors are distinguished:

Piston. Device with direct force transmission. During 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 of which are widely used to power spray guns in the painting industry. Double piston air compressors are used for industrial purposes due to their high performance.
Rotary. Power is transmitted from the engine using a belt. Propellers with rotating blades compress the air inside the device and create increased pressure. Rotary equipment is characterized by high performance, good efficiency, low noise and vibration during operation. Piston type air compressor oil is used sparingly and does not enter the compressed air. The 380 V electric air compressor is especially widespread in production.

The blower can operate independently or using a receiver, which ensures an even supply of compressed air to the system. An air compressor without a receiver is less expensive and smaller, but is more susceptible to breakdown.

Can I do it myself?

Not everyone can make an air compressor for an engine on their own, and making modifications not provided by the car manufacturer can have an unpredictable effect on the operation of the vehicle. However, you can assemble a homemade compressor for a garage or auto repair shop - with the help of such a device you can quickly fill tires with air, create excess pressure for a spray gun and other pneumatic tools, and also find other uses for the equipment.

A do-it-yourself compressor with a receiver will last much longer than purchased equipment, provided it is properly assembled from high-quality parts. This is explained by the fact that the master, who set out to make an air compressor with a receiver, makes it for himself, and for this reason he cares about quality. What parts are needed and how to assemble?

Assembling the compressor with your own hands

The main element of a homemade air supercharger is the propulsion system. It is recommended to use a refrigerator compressor for assembly. It is notable for the presence of a start relay, which provides the ability to set and maintain a certain level of air pressure in the receiver. If you don’t have an old and unnecessary refrigerator at hand, you can find the unit at an industrial waste dump or from friends. Preference should be given to a refrigerator made in the USSR, since powerful and reliable compressors were used to produce Soviet refrigeration equipment.

The refrigeration blower has three tubes, one of which is sealed at one end. The rest are air ducts - one lets air in, the other exhausts. When further assembling the unit, it is important to understand in which direction the air flows circulate. To determine, you need to turn on the compressor for a short time and observe in which direction the circulation occurs. It is recommended to mark the “input” and “output” in different colors so as not to confuse them during assembly. An air check valve for the compressor will help prevent arbitrary changes in air direction.

In addition to the heart of the old refrigerator, to assemble a car compressor you will need:

Air receiver ( good option is a fire extinguisher).
Pressure gauge.
Coarse fuel filter.
Moisture separating filter.
Air pressure control relay.
Set of adapters, clamps, hoses.
Toggle switch for 220 Volt voltage.

At various stages of assembly you will need: a base for installing the finished unit, wheels (can be taken from old furniture), paint, engine oil and anti-corrosion agent.

Receiver assembly

The compressor receiver is a durable container that contains air under pressure. The role played by the car air receiver is to eliminate pulsations during air supply by the compressor, which is carried out by equalizing 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 the consumer and the performance of the air compressor. Using a receiver extends the life of the compressor and is often used in a variety of applications including painting, industrial manufacturing and other industries.

An automobile air receiver can be manufactured in three ways:

Carbon dioxide fire extinguisher. Good for long-term storage gases under pressure up to 10 atmospheres, has durable steel walls and is safe to use. A fire extinguisher with a volume of 5-10 liters is sufficient for the receiver. To convert the fire extinguisher into a compressor receiver, you need to remove the shut-off and starting device and put the prepared hose adapter on the hole. The container must be emptied and washed thoroughly. Next, the plumbing cross is installed and sealed. After this, you can use the manufactured receiver for work.
Hydraulic accumulator. A more specialized device with a sufficient range of capacities. Disadvantage: low nominal pressure. Plus - suitable outlet thread. To use it as a receiver, you need to remove the internal membrane for storing carbon dioxide, and then connect the hose as in the example with a fire extinguisher.
Oxygen balloon. Exceptional strength and air pressure of tens of atmospheres, but small capacity, inconvenient transportation and heaviness. To use, just connect the hose - the homemade receiver is ready for use!

A do-it-yourself air receiver can be made from any cylinder for storing compressed gases, but before use you need to make sure that the selected container can withstand the operating pressure of the future compressor.

Final assembly of the compressor unit

The compressor and receiver should be installed on one common base for ease of storage and transportation of homemade equipment. The compressor from the refrigerator, found earlier, must be cleaned of rust (if any). Next, the oil in the air compressor is changed, since the old one has probably become unusable. You can’t pour any oil into an air compressor; if you don’t have a special compressor lubricant, you can use motor oil, synthetic oil, or semi-synthetic oil.

Install the compressor and receiver on one common base for easy storage and transportation

The compressor is assembled in five successive steps, as follows:

Place the refrigerator blower on the prepared base and secure with threaded rods. The receiver is installed in a vertical position and secured by folded sheets of plywood in the amount of three pieces with a hole for the cylinder. Wheels are screwed to the bottom of the base for easy transportation.
Install the fuel filter on the compressor and the check valve for the air compressor in the air intake hole. For convenience, you can use a rubber hose.
At the outlet pipe of the supercharger, install a water separator through a hose - it can be taken from a diesel engine. To prevent the hose from breaking under pressure, it is necessary to strengthen the connection with automotive clamps. A moisture separator must also be installed at the inlet of the gearbox - a device for decoupling the pressure in the receiver and the compressor. The outlet pressure pipe is connected to one of the ends of the water cross.
Set to top part a relay crosspiece for adjusting pressure, and a pressure gauge at the free end for control. All joints must be firmly reinforced with fum tape and tightened with clamps to prevent failure.
Using a 220 Volt toggle switch, connect the mains phase to the compressor output. Insulate the contacts with electrical tape or dielectric casing.

After connecting the equipment to the network, the oil-fired air compressor can be considered assembled. You can plug the device into the network and check its functionality.

What problems can await during assembly?

Auto air compressors are simple devices in terms of design and operation, but during self-assembly you may encounter the following problems:

Oil supply to the wrong hole. Due to the presence of several tubes in the supercharger, it is possible to get confused and pour oil into the wrong hole. To prevent the problem, oil must be poured into either of the two inlet tubes - the outlet tube is excluded.
Small diameter of the receiver inlet. If using a standard cylinder thread is not possible, you need to solder the two elements using flux and attach a collet clamp. The final design can withstand pressure of 5-6 atmospheres.
Incorrect connection of blower tubes. In order for circulation in the system to occur smoothly and in one direction, you need to install a check valve on the compressor yourself. It will prevent possible problems and will ensure stable operation of the supercharger.

Try to assemble the oil supercharger with your own hands in full accordance with the instructions, recommendations and safety rules. In this case, there will be no problems with the operation of the equipment.

Setting the required pressure

A motorcycle air compressor or car supercharger must be properly prepared for first use. To get started, you need to set the pressure mode using a relay. The adjustment is carried out using two springs - the large one sets the minimum pressure, the small one sets the maximum. The first contact of the relay is connected to zero, the second is attached to the supercharger.

When using the equipment for the first time, monitor the pressure gauge readings - the relay should turn the supercharger on and off when the lower and upper limits of the set pressure are reached, respectively. After final adjustments, you can paint the homemade supercharger and continue operation.

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neon6030 › Blog › Receiver for a compressor from a gas cylinder. Part 1.

After the last attempt to paint with the cheapest Chinese gun ( Hood painting) a thought came to mind like “let it float” and a more expensive Chinese pistol was bought)))

type XRP, nozzle 1.4

Well, as always - “The woman has a lot of trouble - she bought a pig”))) The new gun consumes many times more air, the compressor is catastrophically unable to cope. This is so Slavic - create a problem for yourself and then proudly solve it)) Buying another 220v compressor means blushing with shame every time you pass by three-phase sockets in the garage. And since there is a plan to build a 3-phase compressor, and there is even a ready-made electric motor with pulleys, I decided for now to extract everything that it can give from the old single-cylinder baby - to embed it in the receiver ball valve to take air into the entire hole:

The welding work was carried out by a friend and part-time neighbor, the guy professionally welds heating and plumbing, so if anyone needs it, I’ll get in touch.

A 100-liter propane cylinder from HBO was purchased as heavy artillery. I got it for $18 and was still half full of gas))) During descent into the atmosphere, the cylinder froze and stopped descending; you could see how much gas was left by the frost waterline)))

The container was ventilated for a couple of days, then they filled it with water and began to cook. I made legs from 4.5 mm steel to hang vertically on the wall...

... condensate drain from below, air intake from above...

The air inlet is made at the place where the float is installed so that the flow hits the inner wall of the receiver and loses as much moisture as possible:

Compressor receiver. Accurate calculation and selection

To increase the efficiency of work using compressed air, the vast majority of compressor units use receivers - tanks for storing air under the required pressure. Depending on the intensity of work, receivers of 50, 100 liters or even more can be used.

Why do you need a receiver in a compressor?

The compressor receiver performs several important functions:

Stabilizes the air pressure supplied to the work area(differences in pressure values are inevitable, since a single cycle of operation of any compressor involves a suction phase and an air injection phase).
They provide the supply of compressed air for some time in the event of interruptions in the operation of the compressor, or when an additional consumer is connected to it.
Cleaning the air from accumulating condensate, since high air humidity, which increases with increasing air pressure, leads to intense corrosion of the steel parts of the compressor.
The accumulation of compressed air in the receiver for the compressor leads to a subsequent reduction in the total vibrations in the system, which, in turn, reduces the overall noise level and reduces the level of loads on the base of stationary units.

When performing work related to the production of compressed air in special large quantities, a standard receiver may not be enough. For example, when sandblasting surfaces with a large area, in order not to purchase a more powerful compressor, an additional receiver is often used.

The presence of a receiver, in addition, allows you to use the compressor periodically, i.e., reduce its consumption of electrical energy.

Structurally, the compressor receiver is a sealed tank with a certain capacity. For mobile compressors, receivers up to 50...100 l are used, for stationary ones - up to 500...1000 l. It is equipped with air-cleaning filters, condensate drains and shut-off valves for connection to the main unit and to the working device that consumes compressed air - nozzle, spray gun, etc.

The container is made of steel, from corrosion-resistant steels of type 10ХСНД or 16ГА2Ф. In exceptional cases, for particularly low-power compressors, receivers can be made of plastic or even high-strength rubber.

The layout of receivers can be horizontal or vertical. The first is used in mobile units, the second – in stationary ones. Each variety has its own advantages and disadvantages. In particular, it is easier to drain condensate in vertical receivers, but horizontal receivers are more compact and require shorter pipelines.

How to choose the optimal receiver parameters?

In addition to capacity, the compressor receiver is also characterized by:

Limit values of air humidity.
Operating conditions (allowed difference in external ambient temperatures -15...+40ºС and relative humidity no more than 75...80%).
Requirements for the installation location (away from heat sources, flammable and explosive materials, as well as in an atmosphere contaminated with mechanical particles - for example, near circular saws).

The requirements of PB 03-576-03 (rules for the design and safe operation of pressure vessels) also prohibit the operation of receivers that have not passed the performance check of the tank walls, as well as those that have external surface defects - cracks, dents, traces of atmospheric corrosion.

The selection of receiver characteristics for a compressor is done as follows. Set the required compressed air consumption, duration of its consumption, minimum and maximum value pressure. Next, using standard online calculation tables (for example, http://www.kaeser.ru/Online_Services/Toolbox/Air_receiver_sizes/default.asp) determine the required parameter. For example, with initial air flow data of 0.1 m 3 /min, peak load duration during operation of 5 minutes, permissible pressure difference minimum/maximum of 3/4 atm, the optimal volume of the receiver tank will be 500 liters.

This method is focused on the time it takes to completely empty the receiver. There is also a simplified tabular method that correlates the volume of the receiver with the power consumption of the compressor. The ratios used in practice are:

For a compressor with a power of up to 5 kW – up to 100 l;
For a compressor with a power of up to 10 kW – up to 300 l;
For a compressor with a power of up to 20 kW – up to 550 hp.

It is recommended to obtain intermediate values by interpolation. There are also experimental dependencies. For example, the capacity of the receiver tank cannot be less than the performance of the compressor for 8 seconds of its continuous operation. In particular, with a compressor air flow rate of 400 l/min, the tank volume will be no less than:

V = (400×8)/60 = 53.33 (l)

Do-it-yourself additional receiver for a compressor

A number of jobs in the household or in a small workshop require increased consumption of compressed air, which a conventional household compressor cannot cope with. One solution is to install an additional receiver for the compressor. Such a device can be purchased (the price, depending on the volume, is 12,000...15,000 rubles), or you can make it yourself. Moreover, most of the proposed receiver models are focused on standard compressors, which explains their high price.

Depending on the calculated volume (it is easier to connect an additional receiver in series to the main one), a liquefied gas cylinder or a fire extinguisher body can be adapted for production.

The cylinder for a homemade receiver is first cleaned of gas residues. To do this, the inlet valve must be removed (the use of a power tool is unacceptable, since gas residues may remain in the cylinder). Next, the container is filled with water and left for 24 hours. After this, tubular splitters under the hoses can be welded into the cylinder, although threaded plugs with reliable gaskets can also be provided. The tank is painted with weather-resistant paint.

You can install a pressure gauge in the finished receiver, and a condensate drain in the bottom of the cylinder. The size of the condensate drain must be consistent with the performance of the compressor, its operating pressure and the dimensions of the connecting thread. Prices for condensate traps range from 2500...3000 rubles.

The finished additional receiver, mounted for stability on a tripod welded from a steel bar, has the appearance shown in the photo.

When using this device, the following must be considered:

Installation of a condensate drain on an additional receiver is mandatory;
Before loading, it is necessary to check the compressor electric motor to see if it can work with an additional receiver. To do this, turn on the compressor drive at idle speed, and use a flow meter to check the actual difference in the parameter during long-term (more than 20 minutes) operation. If the pressure does not fall below the minimum set value, then an additional receiver can be used;
If the pressure drops, you will have to reduce the desired value of the on-time duration from the standard 75...80% to 50...60% (with lower values, it is not advisable to use a homemade receiver).

Most compressor stations, in addition to a machine that compresses gas to the required pressure, also include a metal container called a receiver. Often its size significantly exceeds the accompanying equipment. In this article you will find an explanation of why you need a receiver for a compressor, and by what parameters it is selected for specific installation.

The purpose of the air container is directly related to physical properties compressed gases. The faster they lose pressure in the event of a flow, the smaller the volume they occupy. A receiver is needed in the compressor to perform the following functions:

creating the necessary supply of air to supply the consumer without turning on the engine or in case of its unexpected stop;
smoothing out pressure fluctuations, especially characteristic of piston machines;
ensuring the convenience of regulating the output parameters of the gas coming from the compressor unit;
reducing vibration, noise, peak load levels;
collecting moisture and small mechanical inclusions contained in the gas.

Important! Often, the use of large air collectors saves energy consumption due to the rational operation of the electric motor.

The compressor tank is traditionally made made of corrosion-resistant steel. It is also possible to use certain types of plastic and high-strength rubber for small volumes and pressures. Receivers for mobile installations can reach 100 liters. The dimensions of stationary equipment are not limited by anything and are often measured in several cubic meters.

To fill the cylinder and flow air from it, one fitting is enough, but models with a separate gas inlet and outlet work better. In order to control pressure, some manufacturers additionally provide installation of a pressure gauge. For large containers this requirement is mandatory. For their inspection and cleaning, hatches are welded in.

The spatial arrangement of the receiver is selected depending on the convenience of the equipment layout horizontal or vertical. The first option gives greater stability to mobile units. The second provides better condensate separation and requires less installation space.

Receiver selection

The technical requirements for compressor receivers are quite stringent. As high-pressure equipment, they may pose a potential hazard. The most important characteristics that determine the permitted parameters for using the tank are:

operating pressure;
temperature range;
indicators of relative air humidity.

The rules for the design and safe operation of pressure vessels regulate the volume, frequency and method of their control tests for density and strength. They must be sealed, without visible defects and traces of external or internal corrosion.

From a technological point of view, an air compressor with a receiver is needed to ensure the operation of certain pneumatic equipment. What is important here is the required gas flow with the required pressure. This takes into account the operating mode with probable peak loads. All these indicators determine minimum receiver volume, capable of providing a stable air supply.

How to choose a receiver for a compressor that you already have? Take advantage special tables or calculation calculators.

On a note! Simplified methods are based on averaged experimental data. It is believed that the cylinder for a compressor cannot be less than the volume of gas produced by it in 8 seconds of operation at normal loads.

Alternative choice capacitive equipment based on compressor power. It gives the simplest dependency:

5 kW – up to 100 l;
10 kW – up to 300 l;
20 kW – up to 550 l.

All other values are obtained by interpolation.

Making and connecting an additional receiver with your own hands

It is not uncommon for a small workshop to need to accommodate new pneumatic equipment that the old air blower can no longer handle. You can try to solve this problem yourself if connect an additional receiver to the compressor. At the same time, it is not at all necessary to incur unjustified expenses when purchasing a standard container. Experienced craftsmen try to make do with improvised means.

In almost any household, old equipment designed to work under pressure often lies idle. You can make a receiver for a compressor with your own hands from a gas cylinder, a fire extinguisher or a piece of large-diameter seamless thick-walled pipe.

The most reliable is a homemade receiver made from a liquefied petroleum gas cylinder. To do this, the inlet valve is dismantled, after which the internal space is intensively washed or steamed. It is advisable to fill the container with water and allow the bottom sediments to dissolve in it for 24 hours. Only after this can gas cutting and welding be carried out on the body if necessary.

Fittings for connecting a pressure gauge, air inlet and outlet, and a drain valve for condensate removal are welded into the cylinder.

Advice! It is convenient to adapt handles and wheels for mobile installations or a stable support in case of stationary applications.

The connection to the compressor is made using metal pipes or hoses designed for high pressure. Assembled installation is required tested at maximum load, after which the optimal mode for various situations.