| 摘要 |
A disc for a boundary layer separator (21) of the type having a plurality of closely spaced plates (11) mounted so as to be rotatable together about a common axis substantially perpendicular to the plane of the plates, with a flow path extending radially inwardly between adjacent pairs of plates (11) from the perimeter thereof towards a radially inner region (14, 15 and 16) defining a void forming part of an exit route of the flow path has a central disc portion (13) for connection to a drive shaft and openings (14, 15, 16) between the central portion (13) and a radially outer perimeter portion (12). The separator finds particular use in vacuum cleaners. |
