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ISTRUZIONI ORIGINALI
Scroll pump creates vacuum using a simple dual
scroll mechanism in which one of the nested
scrolls orbits about the other, creating moving
zones of captured gas.
Gas enters the scroll set at the perimeter and is
displaced and compressed toward the center hub
where it is exhausted.
TPS-mobile versions equipped with RVPs are:
969-8413, 969-8411, 969-8403, 969-8400, 969-
8417, 969-8405, 969-8419, 969-8420, 969-8421,
969-8424, 969-8425, 969-8426, 969-8430 and
969-8431.
A metal rotor is located (eccentric) into a round
pumping chamber.
Two sliding vanes are placed in the rotor. The
vanes are pushed toward the stator wall either by
springs. To make high-pressure ratios achievable,
the principal requirement of these pumps is that
the inlet and discharge always remain separated.
This separation is achieved placing the rotor in
close proximity to the stator, the near contact line
being placed between the inlet and discharge, and
spring loading the blades so that they remain in
contact with the stator. In addition, oil is used to
seal the end surfaces of the vanes and along the
entire length of the two vanes, as well as across
the ends of the rotor.
As said, the rotor in such pumps are placed inside
the stator. Oil is used in these pumps for a variety
of purposes: to effect a seal between the inlet and
discharge areas, to lubricate, to fill the space un-
der the discharge valve, to serve as a heat transfer
medium and keep the rotor temperature within ac-
ceptable range, to flush particulate matter out of
the pump.
88/105
TECHNICAL INFORMATION
87-901-005-01(A)
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