Types of air compressors .

News Nov 18, 2020

Translational air compressor

An air compressor uses a small piston

The reciprocating air compressors use a crank control piston . Can be fixed or moved, can be used separately or in combination. They can be controlled by either an electric motor or an internal combustion engine .

Air compressors using small translational pistons with a capacity of 5-30 horsepower are often used in automatic assembly and also in non-continuous motion.

Large air compressors that can produce up to 1000 horsepower are used in large industrial assemblies, but they are often underused as they can be replaced with motion compressors. round gear and screw at a cheaper price. Outlet pressure ranges from low to very high (> 5000 psi or 35 Pa ). For the food industry, oil-free air compressors are used relatively efficiently. However, because this is a machine with a special design, the price is relatively high.

Convection air compressor

Convection compressors use a system of rotors in the rotor to compress the flow of air. The fixed stator propeller located at the bottom of each rotor pushes the air stream directly into the system of the next rotor blades. The space area of ​​the air passage gradually decreases through the air compressor to increase the compression. Convection compressors are often used when high flow rates are required such as in large turbine engines . Almost they are used multiple machines in a line. In the case of a pressure ratio below 4: 1, to increase the efficiency of the operation, it is often used to make adjustments to the geometry.

Centrifugal air compressor

Centrifugal air compressors use a rotating impeller or propeller disc to squeeze air into the edge of the impeller to increase the speed of the gas. The machine’s diffuser converts the energy of the speed into pressure. Centrifugal air compressors are commonly used in heavy industry and in continuous working environments. They are usually permanently installed. Their capacity can range from hundreds to thousands of horsepower. With a working system of centrifugal air compressors, they can increase the output pressure by more than 10000 lbf / in² (69 MPa).

Many artificial snow making systems use this type of compressor. They can use an internal combustion engine, a feeder, or a turbine engine. Centrifugal compressors are used in a small gas turbine engine or as the final compression stage of a medium-sized gas turbine engine.

Mixed stream compressors

Mixed flow compressors are similar to centrifugal compressors, but with symmetrical velocity at the rotor entrance. Diffusers are often used to convert the mixed gas stream into convection gas. Mixed flow compressors have a smaller diameter diffuser of the equivalent centrifugal air compressor.

Screw air compressors

Pictures of air compressors.

The screw air compressor, similar to a rotary device using a screw wheel, is composed of 2 coils of spiral foil to compress the air. It can be used just like an automatic loader, and in the system.

Membrane air compressor

Membrane air compressors are used to compress hydrogen gas and compress natural gas . Conventional air compressors are placed above storage tanks to hold compressed air. Typically compressors with oil or free oil are used a lot because oil will enter the air stream. But in the case of a diver’s compressor, even the smallest amount of oil is unacceptable.

Note: From Wikipedia Open Encyclopedia

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