Silent Series Scroll Vacuum Pumps

Silent Series Scroll Vacuum Pump Technology Overview

The namesake of traditional scroll-type designs are the two primary components, an orbiting scroll, and a fixed scroll. The orbiting scroll is coupled to a crankshaft that orbits the scroll eccentrically, following a fixed path with respect to the mating (fixed) scroll, creating a series of crescent-shaped pockets between the two scrolls. In the case of a scroll vacuum pump, the working fluid moves from the periphery (inlet) towards the center (discharge) through increasingly smaller pockets, generating vacuum.

The operating principles of oil-free scroll vacuum pumps are similar to those of lubricated scroll compressors commonly used throughout the refrigeration industry. The primary difference is oil-free scroll vacuum pumps use three idler shafts to maintain a close running clearance between the fixed and orbiting scroll instead of an Oldham ring.

Oil-free scroll vacuum pumps operate without lubrication, so tight machining tolerances are required to mitigate leakage. Using a proprietary scroll coating, Silent Series scroll vacuum pumps from Air Squared further reduce the running clearance between the fixed scroll and orbiting scroll, allowing small-scale oil-free scroll designs to operate at volumetric efficiencies previously unachievable.

Silent Series Scroll Vaccum Pump Advantages

• Silent Series scroll vacuum pumps are 100% oil-free.
• Silent Series scroll vacuum pumps are considerably more quiet and smooth-running than competing technology, such as reciprocating. The geometry of the scroll delivers continuous flow and eliminates the need for valves, resulting in significantly less port pulsation and associated noise. The unique orbital motion is dynamically balanced, minimizing vibration and reducing rubbing velocity far below piston rings or vanes. Combined with the absence of several moving parts, Silent Series scroll vaccum pumps offer a vast improvement over traditional technology, with quiet, smooth, pulsation-free operation.
• Silent Series scroll vacuum pumps eliminate re-expansion losses – a problem found in reciprocating machines with every piston stroke – improving volumetric efficiency. Additionally, throttling losses are nonexistent with the valveless design.
• Silent Series scroll vacuum pumps offer a durable and robust solution, with 70% fewer moving parts than reciprocating technology and only two primary moving parts.