| 摘要 |
A vacuum cleaner turbo-brush includes an axial-inflow impulse turbine. The turbine includes a turbine shaft non-rotatably combined with an impeller that includes aerodynamically shaped, stud-like projections uniformly distributed along a circumferential line of the impeller. The aerodynamic shape has a cross-sectional area that is parabolically bound on both sides. The turbine also includes a guide stage having guide surfaces, each of which has a cross section including, in a direction of incident flow, a circular arc followed by a straight section. A bearing housing surrounds the turbine shaft and forms at least one of a transition and the guide stage in a region of the impeller, and the bearing housing, in a region of the turbine shaft, forming a casing for the turbine shaft and including bearing elements that support the turbine shaft. |
