22
1 BLOWER CHARACTERISTICS
1.2 Operating principle
RBS series blowers are positive displacement blowers
comprising two conjugate shaped rotors 2 which rotate
inside a figure 8 shaped body 1.
The gas enters the blower at pressure P1 and temperature
T1, it is trapped in the volume V and finally discharged
from the outlet at pressure P2 and temperature T2.
The capacity is proportional to the speed of rotation and is
almost constant when the operating pressure varies.
P1 inlet absolute pressure
T1 inlet temperature
P2 outlet absolute pressure
T2 outlet temperature
Fig. 1
1.2 Construction
The body 1 is closed at both ends by covers 5A and 5B in
which the seals 45 and bearings 31, 32 and 33 are located.
The rotors 2 are synchronized by means of a gear with
involute toothed wheels 11A and 11B.
The shafts have labyrinth seals, gas leaks are collected
into special air spaces in the covers and are discharged
into the atmosphere.
Two sumps 12A and 12B are mounted on the covers
which act as oil tanks for the bath lubrication of the
bearings and of the synchronized gear.
Fig. 2
1.3 Nameplate
-Blower type
1) Size from 55 to 225
2) Version F Flanged
V Vertical
H Horizontal
SP Without feet
RV Cooled vertical
3) Execution 0001
-S/N Serial number
-m
3
/h Capacity
-kW Power
-dp mbar Differential pressure
-n RPM Rotation speed
Note : For a detailed description of the blower materials and all its components see also the catalogue
or consult our technical service.
CE
Parma
Italy
Type RBS 65 / F
S/N 0105116 exec. 0001
m3/h 1000 kW 37
dp 500 n 1450
mbar RPM
(3)
(1)
(2)
1
2
V
2
11B
32
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