Is the air compressor using electricity or oil?

The power source and lubrication mode of the air compressor are two different concepts, which need to be explained separately:

1. Power source: main electricity, a small number of oil (diesel)

• electric air compressor:
  most air compressors use electricity as the power source, and the compression mechanism (such as screw and piston) is driven by a motor. This kind of equipment is suitable for scenarios with stable grid supply, such as factories and workshops, with the characteristics of quiet operation, simple maintenance and low cost.

• Diesel driven air compressor:
  some air compressors for mobile or field operations use diesel engines as power and are suitable for occasions without power grid coverage (such as construction sites and mines). This type of equipment has high flexibility, but it is noisy to operate, has high fuel costs, and requires regular engine maintenance.

2. Lubrication method: oil and no oil (water lubrication)

• oil-lubricated air compressor:
  traditional air compressors reduce internal friction by injecting special lubricating oil, while cooling the compression chamber. However, the oil will be discharged with the compressed air and needs to be filtered through the oil and gas separator, which may leave trace oil mist, which is not suitable for scenes with high requirements on air cleanliness (such as food and pharmaceutical industries).

• Air compressor without oil and water lubrication:
  this type of equipment uses water as a lubricating and cooling medium instead of traditional lubricating oil. The water forms a liquid film during the compression process, reducing the direct contact of metal parts, while absorbing heat to reduce the temperature. Its core strengths are:

  • compressed air completely oil-free: The discharged air does not contain oil, no additional oil removal equipment is required, and it can be directly used in processes that require high cleanliness.
  • Environmental protection and energy saving: Water can be recycled, no waste oil is required, and the temperature of the compression process is low, reducing energy loss.
  • Simple structure: Eliminate the oil and gas separation system and make maintenance more convenient.

3. The combination of power and lubrication

• electric without oil and water lubrication:
  commonly used in fixed oil-free water-lubricated air compressors, the compression mechanism is driven by a motor, and the water lubrication system operates independently, which is suitable for indoor clean air demand scenarios.

• Diesel drive without oil and water lubrication:
  part of the mobile non-oil and water lubrication air compressor adopts diesel engine, which is suitable for the field environment without power grid, but it is necessary to maintain the engine and water lubrication system at the same time.

Summary

• power selection: Choose electric (stable power supply) or diesel drive (mobile/no grid) according to the use scenario.
• Lubrication selection: When air cleanliness is required, no oil and water lubrication is selected, and oil lubrication can be used in common scenes.
• Air compressor without oil and water lubrication: Replace oil with water to achieve oil-free compression, but the circulating water needs to be replenished and purified regularly to ensure the lubrication effect.