Oil-free piston compressors are designed to deliver clean, contaminant-free compressed air, making them ideal for applications where air purity is paramount. Here’s a breakdown pressors operate on the principle of reciprocating motion to compress air without the need for oil lubrication within the compression chamber. This is achieved through the use of materials with low friction coefficients and specialized sealing techniques. The process involves the following stages:   

1. 섭취 스트로크:
   
   • As the piston moves downward within the cylinder, it creates a vacuum.
   • This vacuum draws in ambient air through the intake valve.
   • The intake valve opens, allowing air to enter the compression chamber.
2. 압축 스트로크:
   
   • The piston then moves upward, reducing the volume of the compression chamber.   
     
      
   • This action compresses the trapped air, increasing its pressure.   
     
      
   • Both the intake and discharge valves are closed during this stage.
3. 방전 스트로크:
   
   • When the compressed air reaches the desired pressure, the discharge valve opens.
   • The piston continues its upward motion, forcing the compressed air out of the cylinder and into the discharge line.
4. Expansion/Clearance Volume:
   
   • A small amount of air remains in the cylinder after the discharge stroke, known as the clearance volume.
   • This air expands during the initial part of the next intake stroke, preparing the cylinder for the next compression cycle.

Component Breakdown:

Oil-free piston compressors consist of several key components:

• 실린더:
  
  • The chamber where the piston reciprocates, forming the compression space.
  • Made of materials resistant to wear and corrosion.  
    
     
• 피스톤:
  
  • 실린더 내에서 앞뒤로 움직이며 가스를 압축하는 원통형 부품입니다.  
    
     
  • Often made of materials like Teflon or other low-friction polymers.
• 피스톤 링:
  
  • 피스톤과 실린더 벽 사이를 밀봉하여 가스 누출을 방지하고 압축 효율을 유지합니다.
  • Made of materials that can operate without oil lubrication.
• 크랭크샤프트:
  
  • 모터의 회전 동작을 피스톤의 왕복 동작으로 변환합니다.
• 커넥팅 로드:
  
  • 피스톤을 크랭크축에 연결하여 왕복 운동을 전달합니다.
• 흡기 밸브:
  
  • Allows air to enter the cylinder during the intake stroke.
  • Designed to open and close quickly and efficiently.
• 배출 밸브:
  
  • Allows compressed air to exit the cylinder during the discharge stroke.
  • Also designed for rapid opening and closing.
• 냉각 시스템:
  
  • Essential for dissipating heat generated during compression.
  • Can be air-cooled or water-cooled, depending on the compressor’s size and application.  
    
     
• 모터:
  
  • Provides the power to drive the crankshaft.
  • Electric motors are most commonly used.
• Air Filter:
  
  • Located on the intake side of the compressor, and cleans the incoming air.
• Crankcase:
  
  • The housing that contains the crankshaft, connecting rod, and other internal components.  
    
     
• 제어 시스템:
  
  • Monitors and controls the compressor’s operation, including pressure, temperature, and other parameters.