With the launch of this new scroll pump, Leybold Vacuum has added to its product line another vacuum pump - one that ensures a completely dry vacuum. The advantages of the scroll pump include high pumping speeds, low ultimate pressure, low noise level, low levels of vibration, maximum inlet pressure, low weight and low power consumption.
With some 80 percent of the market for dry-compression pumps having speeds of up to 50m3/h, scroll pumps today are playing an increasingly important role. With its SC 5 D, SC 15 D and SC 30 D versions, Leybold offers three compact powerful pumps covering the range from atmospheric pressure down to a fine vacuum.
Typical applications for the pumps will include lasers, leak detection, accelerators/synchrotrons, surface analysis, manufacture of storage media, load lock, spectroscopy, lamp manufacture, nanotechnology, display technology, and use as backing pumps for turbomolecular pump systems.
The operating principle of the scroll pump is based on two spiral cylinders, one offset and orbiting against the other. This creates several crescent-shaped pockets of different sizes within the suction chamber. The orbiting motion alternately increases and decreases the volume of the pockets, and this drives the gases from the outside to the inside. The attainable vacuum is better than 10-2 mbar.
