oil free lubrication air compressor are screw type?

Oil-free lubrication air compressor is not all screw type, there are many types of oil-free lubrication air compressor on the market, each type has its own unique working principle, application scenarios and advantages and disadvantages. The following is a detailed answer:

types of 1. oil-free air compressors

1. oil-free piston air compressor
   • working principle: Use resin material or heat resistant piston for lubrication, instead of traditional lubricating oil.
   • Features: Low cost, simple structure, but high noise, frequent maintenance, suitable for micro and small enterprises or low-demand scenes.
   • Application: Private dental clinics, scientific research units, etc.
2. Scroll-type oil-free machine
   • working principle: The dynamic vortex rotates around the center of the static vortex to form a gas compression cavity.
   • Features: The mute effect is good, the price is cheap, but the exhaust volume is small, the energy consumption is large, and the host life is short.
   • Application: Hospital, printing, spraying industry.
3. Centrifugal oil-free machine
   • working principle: The high-speed single impeller does work on the gas and increases the gas pressure.
   • Features: Large flow and high power, but complicated operation, high noise and high maintenance cost.
   • Application: Biological fermentation, chemical, petroleum, natural gas, refrigeration industry.
4. Dry-type oil-free machine
   • working principle: Double impeller high-speed rotating compressed gas.
   • Features: Stable technology, high market share, but high procurement and maintenance costs.
   • Application: Pharmaceutical, food, chemical, electronic fields.
5. water-lubricated oil-free machine
   • working principle pure water is used as the compressed medium, and the screw and star wheel plate rotate the compressed air.
   • Features: High cost performance, low operating costs, but low market awareness.
   • Application: Pharmaceutical, food, chemical, electronic fields.
6. Oil-free screw air compressor
   • working principle: Twin-screw rotary motion completes the air compression cycle.
   • Features high efficiency and energy saving, easy maintenance, provide high cleanliness of compressed air.
   • Application: Food, pharmaceutical, electronics, semiconductor and other high-standard industries.

Core Technology of 2. Screw Oil-free Air Compressor

1. lubrication method
   • with special materials and precision machining, efficient lubrication (such as water lubrication or ceramic bearings) can be achieved without lubricating oil.
2. Sealing performance
   • prevent compressed air leakage through labyrinth seal, mechanical seal or dry gas seal technology.
3. energy saving design
   • variable frequency speed control technology automatically adjusts the motor speed and reduces energy consumption (energy saving is about 20%-30%).
4. Environmental advantages
   • oil-free design to avoid oil pollution, in line with environmental regulations, suitable for strict clean requirements of the scene.

3. why screw type oil free air compressor is more common?

1. Comprehensive performance advantage:
   • compared with the piston or scroll type, the screw type is better in stability, displacement and noise control.
2. Industry Adaptability:
   • it is suitable for industries with strict air quality requirements (such as medicine, electronics), and can run for a long time with high load.
3. Technology Maturity:
   • screw oil-free air compressor technology is mature, the market recognition is high, brand and model selection is rich.

4. other applicable scenarios of oil-free air compressor

• water-lubricated oil-free machine: Suitable for users with limited budget and high cost performance.
• Centrifugal oil-free machine: Suitable for large flow and low pressure requirements (such as gas supply to fermentation plants).
• Scroll-type oil-free machine: Suitable for scenes with small displacement and high mute requirements (such as laboratories).

5. selection recommendations

1. select type according to requirements:
   • high cleanliness requirements choose screw type or dry type.
   • Low budget choice of piston or scroll type.
   • Large flow selected centrifugal type.
2. Focus on core parameters:
   • exhaust volume, pressure, noise, maintenance costs.
3. Brand and after-sales:
   • priority should be given to qualified and well-known brands to ensure equipment stability and after-sales service.

By understanding the characteristics of different types of oil-free air compressors, users can choose the most suitable equipment according to actual needs to avoid blindly following the trend or over-investment.