Whether the air compressor is filled with oil

Whether the air compressor needs to be refueled depends on the type of air compressor.

When the reciprocating piston of the piston air compressor moves to the right in the cylinder, the pressure in the left cavity of the piston in the cylinder is lower than the atmospheric pressure, the suction valve opens, and outside air is sucked into the cylinder. This process is called the compression process. When the cylinder pressure is higher than the pressure in the output air pipe, the exhaust valve opens. The reciprocating motion of the piston is formed by a crank slider mechanism driven by an electric motor. The rotary motion of the crank is converted into a reciprocating linear motion of the sliding piston. This kind of air compressor needs to lubricate the piston and cylinder during the compression process to reduce friction and wear, so it needs to be refueled.

However, for oil-free air compressors, such as water-lubricated screw air compressors, dry screw air compressors and oil-free scroll air compressors produced by Granklin Group, they do not need to add lubricating oil during operation. These air compressors are designed so that they do not have direct metal-to-metal contact during compression, thereby reducing friction and wear, and eliminating the need for lubricating oil for lubrication.

Therefore, whether it is necessary to add oil to the air compressor, it is necessary to judge according to the specific type of air compressor. If it is an air compressor that needs lubrication, such as a piston air compressor, it needs to be refueled regularly to ensure its normal operation; if it is an oil-free air compressor, it does not need to be refueled.