Lower pulsation: 6 cycles instead of 4 per shaft rotation
Lower efficiency losses: minimal sensitivity to back-pressure
In addition, BORA has managed to eliminate those negative characteristics of the three lobe construction exhibited by the blowers presently in the market, such as
smaller displacement
gas retention between rotors causing:
-
energy wastage (overheating and noise)
-
consequent remedies, like indentations in the rotor profile, that, in turn, reduce efficiency and increase re-flow losses
2 lobes
3 lobes
ADVANTAGES
DISADVANTAGES
Higher pressure
Higher frequency
Higher rigidity
Smaller displacement
Gas retention
BORA by adopting an innovative profile (STEM patent), achieves:
Optimal exploitation of the potential displacement.
Rotors meshing with total lack of gas retention in-between thus preventing gas re-circulation .
