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4 key benefits using a high-dynamic centrifugal blower in ventilation systems

4 key benefits using a high-dynamic centrifugal blower in ventilation systems


Ventilation systems need a pressure source, some systems still rely on pressurized gas, and many already use a centrifugal blower. Did you know there are large differences between blowers? Selecting the right one provides significant benefits for ventilation systems. Here we mention 4 key benefits when using a highly dynamic blower.

  1. >200% Lifetime

Typical of a highly dynamic blower is the immediate response to breathing demand so to create a fully synchronised pressure waveform, often with high pressure ramp, to the patient.  Design of such a blower requires as small as possible and extremely lightweight rotating parts and driving motor. As a result critical components responsible for blower lifetime are much less responsive to wear. This immediately results in longer lifetime. Typical a lifetime of >200% compared to average blowers is achieved.

  1. <40% power consumption

When using a high dynamic blower there is a direct relation between output pressure and the rotational speed of the blower therefore directly controlling the desired fluctuating pressure waveform. As opposed to blowers which provide a continuous flow, the power consumption characteristic of a high-dynamic blower has the same shape as the pressure waveform.
Combined with the reduced weight the resulting power consumption is <40% compared to blowers providing continuous pressure. How attractive is it to provide >2 times longer battery time?

  1. Simple design and control system

Most blower driven ICU ventilators use a so called pneumatic system to control flow, pressure and Oxygen concentration. It requires a blender which is a valve systems that mixes oxygen and air and buffers this in a volume at a preset and controlled pressure. It consists of one or several flow valves.
However, when making use of a high-dynamic blower such complex pneumatic system is not required, leaving a much less complicated design and control system.

  1. Reduced costs bill of material

As a direct result of the above mentioned, the costs of such a system, even apart from a strong reduction in development man-hours and maintenance, is much less. A minimum cost saving for the bill of material is expected of >80 USD.

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