Overview of the working principle of oil-free air compressor

Oil-free air compressor, as the name implies, is an air compressor that does not require the addition or generation of lubricating oil during the compression process. Its working principle is mainly based on the following aspects:

Structural features:

Oil-free air compressors usually adopt specific structural designs, such as piston, screw or scroll, to avoid the generation or use of lubricating oil during the compression process.

The key components inside these machines, such as pistons, screws or scroll plates, are specially treated and lubricated to reduce friction and wear.

Compression process:

In piston oil-free air compressors, the piston reciprocates in the cylinder to compress the gas by changing the volume in the cylinder.

Screw oil-free air compressors use two intermeshing screws to rotate in the casing, and compress the gas through the sealed chamber formed by the screw groove and the inner wall of the casing.

Scroll oil-free air compressors use the relative movement of two scroll plates to form multiple sealed chambers to gradually compress the gas.

Cooling and sealing:

Oil-free air compressors are usually equipped with a cooling system to reduce the heat generated during the compression process and ensure the normal operation of the machine.

The sealing system is also an important part of the oil-free air compressor, which ensures that the gas will not leak during the compression process and prevents external impurities from entering the machine.

Gas treatment:

The compressed gas may need to undergo further treatment, such as filtering, drying, etc., to meet specific usage requirements.

Oil-free air compressors are usually equipped with corresponding gas treatment devices to ensure the quality and stability of the output gas.

Energy conversion:

The oil-free air compressor is driven by a power source such as an electric motor or an internal combustion engine to convert mechanical energy into the pressure energy of the gas.

In this process, the oil-free air compressor needs to maintain a high energy conversion rate to reduce energy consumption and operating costs.

In summary, the working principle of the oil-free air compressor mainly depends on its specific structural design, compression process, cooling and sealing system, gas treatment and energy conversion. These characteristics make the oil-free air compressor have a wide range of application value in occasions where high-quality compressed gas is required.