3Description
3.1Design and function
The SCROLLVAC plus 3-phase and 1‑phase pumps are shown in
.
The pump is a dry vacuum pump as all the bearings, with their hydrocarbon
lubricant, are isolated from the vacuum space. The pump is suitable for
use on vapour handling processes and may be used for some pumping
applications involving corrosive substances. For information on pumping
ammable gases, contact us.
The body of the pump includes a xed scroll and an orbiting scroll. The
orbiting scroll is controlled by an electric motor through an eccentric cam
on the motor drive shaft. The movement of the orbiting scroll, meshed with
the xed scroll, forms successive crescent shaped volumes in the pump.
Gas that enters the pump through the inlet is compressed by the movement
of the orbiting scroll and swept towards the centre of the xed scroll. The
compressed gas enters the exhaust port near the centre of the xed scroll
and is exhausted from the pump through the outlet.
Figure 1. SCROLLVAC plus 3-phase and 1-phase
3.21-phase pump
Pump contr
oller
The 1-phase integral pump controller manages the supply of current to an
embedded 3-phase electric motor in accordance with operating conditions.
The 1-phase pump controller nominally supplies the motor with a 60 Hz
excitation frequency. The controller monitors power and temperature, and
300668736_002_C7 - © Leybold 15
Description
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