Generally, they are built in fine-grained pearlitic cast iron, but in order to avoid excessive thicknesses trying to eliminate leaks due to the porosity in the casting that is technically impossible to eliminate, there is a growing tendency to make the casing in welded steel, especially in compressors with power exceeding 100,000 frig / h. see all air compressor spares. In the case of small-capacity compressors, cylinder liners are made on the same casting as the housing, but in this case, an intrusive cast iron is used so that, after treatment, it has a high surface hardness and is resistant to friction. For medium and large powers, it is normal for the jacket to be treated steel and superimposed on the casing housing, be it cast iron or laminated steel.
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Using the crank-crank mechanical system, two variants are used; one, of eccentric-rod-piston and another of crankshaft-rod-piston.
How an air compressor works
The compressors are a type of machines whose main function is to increase the pressure of a gas. While the most common is that the element that is compressed is air, in the industry, there are other types of compressors that work with other types of gases according to the need of each case. Its applications are many, but how does an air compressor work?
The operation of an air compressor
This tool absorbs air at ambient pressure, through a filtering system and returns it with the desired pressure, either to a direct outlet or to a boiler, where it will accumulate at higher pressure. The operation of this system is mechanically simple.
Types of air compressors
There are two main types of compressors, depending on whether they carry lubrication or not.
Graphite pallet compressor
The first of these is the paddle air compressor in graphite, which does not require lubrication and works as follows.
The air is introduced by the vacuum generated inside the chamber that makes up the graphite vanes, also known as graphite vanes or graphite vanes.
This camera, by means of the movement of the rotor, shrinks its volume as the rotation of the rotor takes place, thus increasing the pressure of the air trapped between the two vanes or vanes. See the all air compressor spares.
Once this air is compressed, it is released through the ejection zone of the compressor jacket.
Fiber vane compressor
The other main type of air compressors is that of fibre pallets. Used in applications such as milking, it differs from the graphite compressor in that it does need lubrication. At the operating level, it is very similar. The air is introduced by the vacuum generated inside the chamber that makes up the palette, in this case, fibre, also known as fibre vanes or fibre vanes. This camera, by means of the movement of the rotor, shrinks its volume as the rotation of the rotor takes place, thus increasing the pressure of the air trapped between the two vanes or vanes. It is in this phase of the movement where a lubrication is produced, provided externally by oil, in a tank placed in the compressor itself. Watch out for all air compressor spares.
Case – It is also known as a compressor block or body. Each of the components of the compressor is found therein and is characterized by being completely sealed to the used refrigerant gas.
Head – Part of the compressor where the air is compressed
Cylinder Part – that is attached to the connecting rod through a pin, these can be of the simple type or of double effect depending on the type of compressor, that is, according to the way in which the gas is compressed, either by one or both sides of the piston.
Connecting rod and crank – Piece that creates the path of the piston thus generating the swinging motion
Pressure gauges – Parts that are responsible for measuring the air pressure
Crankshaft – It is an axle with counterweights and elbows that have some machines that manage to change the movement of the alternative rod has rotary and vice versa.
Tank – It is the tank where the compressed air is stored. It has a unidirectional valve called check valve, which makes it possible for the air to enter the tank and at the same time prevents it from escaping through the same intake path.
It has a security system that prevents the air from accumulating dangerously. Valves of aspiration and discharge Part of the compressor that makes alternative communication possible between the cylinders and the suction and discharge collector, avoid any loss of cooling power. This piece must offer excellent sealing regardless of the working condition, at the same time it must have a high mechanical resistance which will help it withstand any pressure difference that is believed in the cylinder. Get the all air compressor spares.
This part of the compressor can be designed based on gas or electricity. The most used are the first ones which can be used outdoors without the need of any source of electricity. The electric motors cause the pump to rotate compressing the air. These engines can be turbine or paint. The piston, also called positive displacement compressors, work with electricity or gas to rotate a crankshaft which is what allows the rotation of a piston so that it pumps air to the tank.
- Regulator Piece that is responsible for controlling the pressure and air output
- Greasing With this lubrication element, the compressor manages to achieve a perfect closure in its piston segments with the cylinder liner, as well as to reduce any mobile part reasoning.
- Retention valves they are in charge of creating the communication between the crankcase and the suction manifold, and between the crankcase and the valve plate. Its function is to enable the correct functioning of the gear pump.
- Thermal protectors Parts that are placed inside the compressor, which are responsible for stopping it when it generates overheating in the engine.
- Cable gland Part of an open compressor that is responsible for preventing any leakage of refrigerant through the shaft. Once this air is compressed, as in the case of the graphite vane compressor, it is released through the ejection zone of the compressor jacket.