The difference between air compressor oil injection and micro oil

The core difference between air compressor oil injection and micro-oil lubrication is that amount of lubricating oil and quality of compressed air, the following is the comparison between the two and the applicable scenario analysis:

1. oil injection lubrication method

1. working principle
   during the compression process, lubricating oil is directly injected into the compression chamber to form an oil film to reduce rotor friction, while cooling the compression chamber and enhancing sealing.

2. Compressed air quality
   the compressed air may contain a small amount of lubricating oil, which requires subsequent treatment through oil separators and filters.

3. Application Scenarios
   it is suitable for scenarios where the quality of compressed air is not high or can be met through subsequent processing, such as industrial manufacturing, mining, construction, etc.

4. Advantages and disadvantages

   • advantages: Small running vibration, low noise, high efficiency and simple maintenance.
   • Disadvantages: An oil separator and filter are required, and traces of lubricating oil may remain in the compressed air.

2. micro-oil lubrication method

1. working principle
   during the compression process, only a small amount of lubricating oil vapor is injected to reduce the wear of mechanical parts and cool the compression cavity.

2. Compressed air quality
   the oil content is very small, but it may still contain trace amounts of lubricating oil, which is suitable for scenarios where there are certain requirements for compressed air quality but do not need to meet oil-free standards.

3. Application Scenarios
   such as automobile maintenance, electronic manufacturing, food processing, medical equipment, etc.

4. Advantages and disadvantages

   • advantages: Compared with oil-free air compressors, it has advantages in efficiency and cost; compared with oil-injected air compressors, the compressed air provided is cleaner.
   • Disadvantages: It may still be restricted in some environments with extremely high air quality requirements.

Summary of 3. core differences

4. selection recommendations

• oil injection lubrication is preferred: If the compressed air quality requirements are not high, or can be through follow-up processing (such as the installation of high-efficiency filters) to meet the demand, fuel injection lubrication method in terms of cost, efficiency and maintenance advantages.
• Micro-oil lubrication is preferred if there are certain requirements for the quality of compressed air (such as food processing, medical equipment), but there is no need to meet the completely oil-free standard, the micro-oil lubrication method can strike a balance between efficiency and cleanliness.
• Oil-free lubrication method if the compressed air quality requirements are extremely high (such as pharmaceutical, electronic chip manufacturing), you need to choose an oil-free air compressor to ensure that the compression process is completely free of contact with lubricating oil.