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Silent centrifugal fans not only for medicine

About 2 % of women and 4 % of men worldwide suffer with the respiratory dysfunction obstructive sleep apnea (OSA), the remedy is a ventilation aid. The lungs of the person asleep are regularly provided sufficient air and thereby oxygen with the use of a respiratory mask. In order to establish the required air pressure, ebm-papst has developed a new centrifugal fan which has been adapted to the requirements of medical technology.

The RV-45 fan (Image 1) is available in 12 V and 24 V versions, with 40 W power, a small assembly space of 64 x 64 x 55 mm, high dynamics during pressure increase and a low operating noise of just 43.5 dB(A). With this it operates very efficiently and delivers up to 540 l/min air or a pressure increase of up to 5000 Pa. All air-carrying plastic components are made up of biocompatible plastic and are physiologically safe. The fan supports the body’s own breathing reflex with targeted control of feed pressure and amount of air (Image 2). It even supports CPAP: Continuous Positive Airway Pressure, therefore constant positive pressure, as well as APAP, the automatic tuning pf pressure. The BIPAP and BiLevel versions, two different pressure levels for the inhalation and exhalation process, are equally possible due to the newly developed motor which enables control with higher dynamics. Due to these features, the smooth-operating fan also lends itself to further technical areas of application in industry with high requirements for reliability and dynamics, e.g. fuel cells, smoke detectors, packaging machines and much more.



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