Abstract
In order to study the influence of water jet related parameters in the nursing bed cleaning system on the hip cleaning and comfort of bedridden personnel, combined with the knowledge of ergonomic pressure perception, FLUNET software is used to simulate flow field and analyse impact of nozzle distance to buttock, nozzle diameter, stand-off distance, and jet inclination angle on comfort and cleaning effectiveness of jet stream. When the jet inlet velocity is 3m/s, the stand-off distance is 150mm, the nozzle diameter is 4mm, and the jet tilt angle is 20°, the stand-off distance is 0.0904N, it is within the comfortable pressure range, ranging from 0.0851N∼0.0906N. In addition, the jet stream under above settings has a wider cleaning range and meets the cleaning requirement for people lying on nursing bed.
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