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. Инсульт:
   
   • 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. Ход сжатия:
   
   • 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. Инсульт при разряде:
   
   • 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:

• Цилиндр:
  
  • The chamber where the piston reciprocates, forming the compression space.
  • Made of materials resistant to wear and corrosion.  
    
     
• Поршень:
  
  • Цилиндрический элемент, который перемещается вперед-назад внутри цилиндра, сжимая газ.  
    
     
  • Often made of materials like Teflon or other low-friction polymers.
• Поршневые кольца:
  
  • Уплотнение между поршнем и стенкой цилиндра, предотвращающее утечку газа и поддерживающее эффективность сжатия.
  • Made of materials that can operate without oil lubrication.
• Коленчатый вал:
  
  • Преобразует вращательное движение от двигателя в возвратно-поступательное движение поршня.
• Шатун:
  
  • Соединяет поршень с коленчатым валом, передавая ему возвратно-поступательное движение.
• Впускной клапан:
  
  • Allows air to enter the cylinder during the intake stroke.
  • Designed to open and close quickly and efficiently.
• Разгрузочный клапан:
  
  • Allows compressed air to exit the cylinder during the discharge stroke.
  • Also designed for rapid opening and closing.
• Система охлаждения:
  
  • Essential for dissipating heat generated during compression.
  • Can be air-cooled or water-cooled, depending on the compressor’s size and application.  
    
     
• Мотор:
  
  • 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.  
    
     
• Система управления:
  
  • Monitors and controls the compressor’s operation, including pressure, temperature, and other parameters.