DBSt side channel blower Atlas Copco are two stage and single impeller devices.
The twin impellers working in parallel allow for large quantities of suction air up to 1980 m3/h with discrete vacuum levels up to -300 mbar. The twin impeller variant increases the flow capacity of the blower.
Principle of operation:
Atlas Copco DB series side channel blowers operate by transferring kinetic energy through a rotating impeller. The rotor is directly attached to the motor shaft. The rotor is available in a single variant (DBD and DBS models) or double variant (DBDt and DBSt models). This allows (direct drive gearbox) to suck in the pumped medium. It is then compressed in the side channel. DB series blowers can be used to produce both vacuum and compressed air at the capacity and differential pressure necessary for a given process. Available in single-stage (DBS and DBSt) and two-stage (DBD and DBDt) versions.