Air compressor - kronung.ro

Air compressors

At kronung.ro you will find the widest range of piston, coaxial or belt-driven compressors, with power ratings from 0.55 hp up to 20 hp for oil-lubricated compressors, and up to 2.2 hp for oil-free piston compressors.

An air compressor is a piece of equipment used to increase the pressure of air contained within a compressed air
tank by reducing its volume. This equipment compresses air from an initial inlet pressure – atmospheric pressure – to a higher discharge pressure.

Air compressor characteristics

The main technical and functional characteristics of a compressor are the discharge pressure and the flow rate.
The ratio between the final pressure and the initial pressure of the compressed gas is called the compression ratio. If this ratio is less than 3, the term ‘compressor’ is not used; instead, the term ‘blower’ is used.

To compress the gas, the compressor operates according to a reverse thermodynamic cycle (generator cycle), consuming mechanical work. Compressors are power-generating machines, driven by an electric motor, an internal combustion engine or a gas turbine, either by direct coupling or via a mechanical transmission, with the engine supplying the mechanical energy required for operation.

Types of air compressors

Let’s look at the main types of air compressors and their characteristics:

screw air compressors – a screw compressor consists of two rotors, a driving rotor with convex teeth and a driven rotor with concave teeth. During meshing, the two rotors intermesh, forming a continuous line of engagement from the suction side to the discharge side. The space between the rotors’ teeth becomes progressively smaller from suction to discharge, thereby compressing the gas.
SCROLL compressors – SCROLL compressors operate oil-free. They are also known
as spiral compressors. Two concentric spirals, one fixed and one moving which rotates inside
the first spiral, compress the air through a simple and silent process. Because they have few moving parts, these compressors are very reliable.
Piston air compressors – these are the most common type of compressor, used by both professionals and DIY enthusiasts for domestic tasks. The piston slides inside a cylinder, its movement being driven by a connecting rod and crankshaft mechanism. At the top of the cylinder there are two valves, an intake valve and an exhaust valve, which control the intake and exhaust into and out of the compressor’s working chamber respectively. The piston compressors on masif.ro are powered by motors ranging from 0.55 hp to 20 hp for oil-lubricated units, and up to 2.2 hp for oil-free units.
Medical compressors – these compressors are designed for dental practices and medical laboratories and are characterised by their compact size, quiet operation and oil-free compressed air.

Piston air compressors

Fini SCROLL air compressors

Screw air compressors

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