Vacuum pumps operating at speeds reaching tens of thousands of revolutions per minute are typically referred to as turbomolecular pumps; their core component is a rotor assembly that spins tens of thousands of times per minute. This design causes gas molecules to behave as if struck by a rapidly spinning tennis racket, driving them continuously toward the pump's outlet. Modern turbomolecular pumps can achieve rotational speeds of up to 90,000 RPM-equivalent to completing 1,500 rotations every second.
Unique Advantages of High-Vacuum Pumps
Ultra-High Vacuum Levels: Attainable ultimate vacuum levels can reach 10⁻⁸ Pascals-eight orders of magnitude higher than those achieved by standard mechanical pumps.
Clean and Contamination-Free: Requires no lubricating oil, thereby preventing oil vapor backstreaming and the subsequent contamination of the vacuum environment.
Rapid Pumping: Reaches operational vacuum levels within just three minutes of startup.
Multi-Stage Synergy: Achieves highly efficient pumping through the combined action of molecular drag and mechanical compression.
Typical Application Scenarios
In the semiconductor industry, these devices are utilized for wafer coating processes; in scientific research, they assist particle accelerators in maintaining ultra-high vacuum environments. Medical CT scanners also rely on them to preserve the vacuum integrity of X-ray tubes, while infrared detectors in astronomical observation instruments depend on them to eliminate thermal noise interference caused by air molecules.
