A scroll pump is an oil-free, positive displacement vacuum pump that generates vacuum or low-pressure compressed air using two interleaved spiral elements. Known for clean operation, low noise, and high reliability, scroll pump technology is widely used in laboratory, semiconductor, pharmaceutical, and light industrial environments where contamination-free performance is critical.
The orbiting scroll moves in a circular path without rotating on its own axis. This motion creates sealed gas pockets between the scroll flanks.
Because suction, compression, and discharge occur simultaneously at different radial positions, scroll pumps produce smooth, low-pulsation flow.
Scroll pumps operate on the positive displacement principle:
Vacuum is produced by continuously removing gas molecules from a sealed system, lowering absolute pressure below atmospheric level.
Compression follows a polytropic process (PVⁿ = constant), where decreasing volume increases pressure and temperature. Proper thermal management ensures dimensional stability and efficiency.
In scroll compressors (air compression variant), the same geometry increases discharge pressure instead of exhausting to atmosphere
Typical performance specifications for a dry scroll vacuum pump include:
Scroll compressor variants can deliver oil-free compressed air up to 8–10 bar.
Scroll pumps are commonly used as backing pumps for turbomolecular systems or as standalone rough vacuum pumps.
Scroll vacuum pumps are widely used in:
Scroll pump technology delivers reliable, oil-free vacuum and low-pressure compressed air through precision orbital compression. By progressively reducing gas volume between interleaved spirals, scroll vacuum pumps achieve stable rough vacuum levels with minimal vibration and contamination risk.
For industries requiring clean vacuum systems, consistent performance, and reduced maintenance, scroll pumps remain a highly efficient and technically proven solution.
