Patent ID: 9034067
Filing Date: 2015-05-19
Classification: A47L

Abstract:
1. A multi-cyclone separating apparatus of a vacuum cleaner, comprising: an upstream cyclone having an upstream air outlet and an upstream separating chamber inside, an upper portion of the upstream separating chamber being connected with an air inlet passage; at least one downstream cyclone, inside of which is formed a downstream separating chamber, each downstream cyclone having an air passage formed between and connected with the upstream air outlet and the downstream air inlet; an outer barrel, inside of which the upstream cyclone is located, an entrance of the air inlet passage being located at the outer barrel or extends outside of the outer barrel; a shielding cover disposed within the outer barrel, inside of which is formed a secondary dust chamber; a downstream dust hole set in a bottom of the at least one downstream cyclone, which is inside the shielding cover and connected with the secondary dust chamber; a primary dust chamber formed between an outer wall of the shielding cover and an inner wall of the outer barrel; and a curved dust rejecting mouth, set in a bottom of the upstream cyclone, which is outside of the shielding cover entirely; wherein the primary dust chamber is situated below and connected with the dust rejecting mouth, and each downstream cyclone has an inclined undersurface which inclines downward from near to distant to a longitudinal axis of shielding cover, which makes the downstream dust hole opened on said inclined undersurface incline towards the longitudinal axis of the secondary dust chamber, and wherein the shielding cover has an upper end which is connected to an undersurface of the upstream cyclone and an outer wall of the at least one downstream cyclone, and an inner space within which a lower part of the at least one downstream cyclone is located.