Patent ID: 9585533
Date: 2017-03-07
CPC Classifications: A47L,B01D,B08B,F16K

Claim:
1. A vacuum cleaner, comprising: a suction inlet; a dirt collection container; a filter device; a suction conduit; a suction unit; wherein the dirt collection container is in flow communication with the suction unit via the filter device and the suction conduit; and wherein the filter device has a negative pressure applied to it by the suction unit; an external air valve device; wherein the filter device is capable of having external air applied thereto on a clean side thereof via the external air valve device; and wherein for cleaning the filter device the external air valve device is capable of being brought from a closed valve position to an open valve position and back again from the open valve position to a closed valve position; and a battery device for supplying energy to the external air valve device; wherein a control device is provided which controls the cleaning of the filter device by the external air valve device, wherein the filter cleaning is initiated manually or automatically; wherein the control device controls an electric motor device of the suction unit, and wherein the control device comprises a motor control subunit which is signally and operatively connected to an external air valve control subunit.