Vacuum cleaner impeller and motor assembly

摘要

An impeller (110) reduces peak noise in the frequency range of 8~10khz and is constructed, in disclosed embodiments, with a lower plate (111) in a shape of a disk, an upper plate (112) spaced apart from the lower plate by a predetermined distance and having a diameter corresponding with a diameter of the lower plate and a central air inlet (115), and a plurality of air guide members (113) disposed radially between the lower plate and the upper plate having their outside corners chamfered.