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How to Select A Blower

When selecting a side channel blower, it is important to choose a model that can achieve air flow and compression/vacuum comfortably within its performance curve.
The below performance curve demonstrates vacuum and compression capabilities at 75m3/h airflow:
The 2.2kW model is suitable for this flow rate and can withstand a maximum 240mbar pressure.
The 1.6kW model would achieve the 75m3/h airflow, however, the maximum pressure is reduced to 195mbar compared to a compression set-up and will generate more heat working close to the design limit and therefore a 2.2kW options would offer a better solution for most applications.

Performance overview of stage variants

Side channel blowers can deliver greater pressure as the number of stages increases, however, this compromises the amount of airflow generated.

The charts below illustrate the relation between pressure and airflow for each stage option for both compression and vacuum applications:

Blower Options

Single Stage

Single stage blowers perform the compression of the gas in a single step with one impeller.

Maximum capacity: 2100 m3/h

Maximum compression: 475 mbar

Maximum vacuum: -350 mbar

Double Stage

Double stage blowers perform the compression of the gas in the first stage/impeller and then it is compressed again in the second stage/impeller.

Maximum capacity: 1150 m3/h

Maximum compression: 650 mbar

Maximum vacuum: -475 mbar

 

Triple Stage

Triple stage blowers perform the compression of the gas in the first stage/impeller and again in the second and third stage/impellers.

Maximum capacity: 160 m3/h

Maximum compression: 1000 mbar

Maximum vacuum: -700 mbar