TURBINE WHEEL OR BLOWER WITH REDUCED NOISE

摘要

The invention refers to a turbine wheel or blower of a centrifugal suction unit which in suction machines, especially in dust vacuum cleaners, generate negative suction pressure and suck off air. The structure according to the invention reduces noisiness with its multilevel wheel. The turbine wheel wears two or several levels separated by walls with blades in between. The blades of the upper and lower level of the two-level wheel according to the embodiment are displaced one from another. The effectiveness of the wheel is additionally increased by an intake distributor which assures the same quantity of air to all the levels of the multilevel wheel.