Acclon Technologies

Scroll vacuum pump

With the help of a dual spiral mechanism, scroll pumps create a vacuum by forming areas of trapped gas as one spiral rotates within another. A scroll vacuum pump requires minimal maintenance, keeping costs low, making it a great option for anyone looking for an oil-free vacuum pump.

  • Superior performance

  • Compact and lightweight

  • Flexible solutions

  • Oil-free

  • Easy to use

What are scroll vacuum pumps?

A scroll pump is a type of vacuum pump that operates through a spiral rotor design. Scroll vacuum pumps consist of two spiral scroll rotors: one fixed scroll (rotor) and one eccentrically moving rotor. One rotor is fixed, while the other rotates eccentrically around the fixed rotor.

The rotation of the eccentric rotor creates a spiral motion in the cavity between the two rotors, drawing in gas or air. The rotation of the rotors pushes the gas or air to the outer edge of the pump, where it is expelled through the discharge opening.

Scroll vacuum pumps are specifically designed as solutions for applications where medium vacuum levels are desired, such as in research & development, the semiconductor industry, and for medical and analytical equipment. They can also be used in combination with high vacuum pumps. They have low noise and vibration levels and feature dry compression.

Advantages of dry scroll vacuum pumps

There are several benefits to using scroll pumps in vacuum applications. Due to their high compression, these pumps achieve a low ultimate vacuum, comparable to an oil-sealed vacuum pump. They can be used for applications requiring extremely clean and pure conditions.

Another advantage of scroll pumps is that they are completely oil-free. Traditional vacuum pumps require oil to lubricate, seal, and cool internal components, but a scroll pump does not need oil. This means no contamination enters the vacuum chamber, and there is no need for oil replacement or disposal. Oil vapor contamination in the work environment is also no longer an issue.

Additionally, scroll pumps are energy-efficient and very easy to maintain. With longer intervals between maintenance and minimal power consumption, these vacuum pumps are a cost-effective option. Edwards’ nXDS scroll vacuum pumps are particularly user-friendly due to their low noise level and intuitive operation.

Applications of scroll vacuum pumps

The quiet, compact, and low-maintenance scroll vacuum pumps can be used for various applications. For example, they are used in chemical and analytical applications and are frequently employed in research & development, chemical labs, analytical equipment, and the semiconductor industry.

Their versatility is demonstrated by the fact that they can also be used as backing pumps for turbopumps or cryopumps. In material and surface research, the nXDS is used in experimental setups for evacuating the main chamber, lock chamber, or intermediate vacuum. They can also be used for vacuuming gas lines or for the insulation vacuum of cryogenic lines. A hermetically sealed variant without a gas ballast is available for helium applications.

NXDS scroll vacuum pumps from Edwards

Edwards’ nXDS pumps stand out from other scroll pumps due to their increased pumping speeds, lower ultimate pressures, reduced power consumption, and lower noise levels. Additionally, the nXDS scroll vacuum pumps are designed for full on-site maintenance.

They combine low service intervals (up to 5 years) with high ease of use, featuring intelligent control functions. The manual control buttons include a standby button for speed control, ensuring the most efficient process adjustment, and a dedicated remote control interface for greater convenience.

Scroll vacuumpomp - Acclon Technologies

Range of scroll pumps

Edwards’ nXDS scroll pumps come with capacities ranging from 3 to 46 m³/h. The ultimate vacuum of these pumps is around 2×10^-2 mbar, with some models achieving an ultimate vacuum of 7×10^-3 mbar. The latest versions require up to 20% less peak power during the initial pump-down, meaning they can evacuate large volumes without performance loss.

The nXDS-C pumps are modified to be more suitable for vapor handling processes and can be used in certain applications involving corrosive substances. This chemically resistant version is equipped with Chemraz® internal valve pads and stainless steel fittings.

The nXDS-R scroll vacuum pumps are supplied without a gas ballast to prevent accidental opening during operation. The hermetically sealed pumps are ideal for applications such as noble gas recirculation or gas recovery.