Vacuum cleaner
AssigneeKoninklijke Philips N.V.
InventorsJohannes Tseard Van Der Kooi, Fokke Roelof Voorhorst, Bastiaan Johannes De Wit
Life of this patent
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Abstract
A vacuum cleaner (1, 21, 41, 51) for dry dust comprises at least a dust chamber (3, 23, 43, 53) and a fan unit(13, 63), which dust chamber (3, 23, 43, 53) is provided with an air inlet opening (7, 27, 57) and an air outlet opening (8, 28) communicating with the fan unit (13, 63). The dust chamber (3, 23, 43, 53) comprises a movable body (9, 29, 59) for restricting air flow through the dust chamber (3, 23, 43, 53). In use the movable body (9, 29, 59) is located on dry dust collected in the dust chamber (3, 23, 43, 53) due to kinematic sorting between the movable body (9, 29, 59) and the dry dust.
Claims14
A vacuum cleaner for dry dust, said vacuum cleaner comprising:
- a dust chamber having an air inlet opening and an air outlet opening;
- a fan unit arranged for producing an air flow from the air inlet opening to the air outlet opening and carrying the dry dust for collection in the dust chamber;
- a movable body supported in the dust chamber and arranged such that, in operation, said movable body rests on dry dust collected in the dust chamber due to kinematic sorting between the movable body and the dry dust and moves in a direction that increasingly restricts said air flow as the amount of dry dust in said dust chamber increases, kinematic sorting referring to a process whereby a mixture of larger and smaller objects is vibrated to effect sorting of said objects such that the larger objects become located above the smaller objects;
- said vacuum cleaner being adapted to effect vibration of at least one of the movable body and the dry dust chamber to produce said kinematic sorting.
Dependencies are inferred from the claim text.