| 摘要 |
<p>A motor, fan and cyclonic separation apparatus arrangement for a vacuum cleaner (2,602,702,802) comprising: a motor coupled to a fan for generating air flow; and a cyclonic separation apparatus located in a path of the air flow generated by the fan. The cyclonic separation apparatus comprises: a plurality of cyclones (84,284) each with an air inlet port (88,288) and an air outlet port (56,256); and a cooling air flow path (61a,61b) . The motor comprises a permanent magnet brushless motor, a switched reluctance motor or a flux switching motor. The fan has an outer diameter the same or less than the diameter of the motor. The plurality of cyclones, the motor and the fan are arranged in a circular array about a central axis (21,321) of the cyclonic separation apparatus. The arrangement comprises a baffle for directing air flow from the fan out of the circular array. The motor is located in the cooling air flow path.</p> |
