Scrollvac

In 1905 the principle of the scroll compressor was developed by the Frenchman Leon Creux. The scroll pump is now being used as an oil-free vacuum pump. Every scroll pump consists of two Archimedes spirals engaging each other with an offset of 180°. Thus several crescent-shaped pockets of differing sizes are created. By means of an eccentric drive, a second spiral is made to orbit about a fixed spiral, thus reducing the volume of the pockets and compressing gases from the outside towards the inside thereby pumping the gases.

Important to the quality of a scroll pump is that precise manufacturing tolerances are maintained and that suitable materials are selected.

Advantages to the User

• Maintenance-poor, free of oil and bearing lubrication, free of hydrocarbons
• Absolutely oil-free
• High effective pumping speed
• Low ultimate pressure
• Low noise level
• Low vibration operation
• Atmospheric inlet pressure allowable
• Low weight
• Air cooling
• Low power consumption

Typical Applications

• Electron beam welding
• Lasers
• Leak detection systems
• Accelerators / synchrontrons
• Surface analysis instruments
• Scanning electron microscopes
• Load lock
• Spectroscopy
• Lamp manufacturing
• As a backing pump for turbomolecular pump systems