Patent ID: 7867304
Filing Date: 2011-01-11
Classification: A47L,B01D,Y10S

Abstract:
1. Method for cleaning the filters of a vacuum cleaner, wherein the vacuum cleaner comprises: a dirt collecting container with a suction inlet, a suction tube connected to the suction inlet, at least one suction unit in connection with the dirt collecting container via at least one filter for creating a negative pressure in the suction tube, at least one suction line following the at least one filter, an external air inlet connecting the at least one suction line to an external air supply, and at least one closing valve for closing the external air inlet, the method, for cleaning the at least one filter, comprises: opening the at least one closing valve such that a side of the at least one filter that is oriented away from the dirt collecting container is impinged upon by external air, wherein: