METHOD FOR CLEANING A FILTER OF A VACUUM CLEANING APPARATUS AND VACUUM CLEANING APPARATUS THEREFOR

摘要

The invention relates to a method for cleaning a filter of a vacuum cleaning apparatus, wherein in operation of the vacuum cleaning apparatus the filter has suction air flowing therethrough, said suction air being generated by a fan, the method including measuring a first pressure at an inflow section of the filter, measuring a second pressure at an outflow section of the filter, determining a pressure drop at the filter as a pressure difference between the first pressure and the second pressure, determining a quantity characterizing a volume flow of the suction air in the outflow section of the filter, determining, from the pressure difference and the quantity that characterizes the volume flow, a quantity characterizing a flow resistance of the filter, and initiating a filter cleaning operation in dependence upon the determined quantity that characterizes the flow resistance of the filter.

主权项

1. A method for cleaning a filter of a vacuum cleaning apparatus, wherein in operation of the vacuum cleaning apparatus the filter has suction air flowing therethrough, said suction air being generated by a fan, the method comprising:
measuring a first pressure at an inflow section of the filter; measuring a second pressure at an outflow section of the filter; determining a pressure drop at the filter as a pressure difference between the first pressure and the second pressure; determining a quantity characterizing a volume flow of the suction air in the outflow section of the filter; determining, from the pressure difference and the quantity that characterizes the volume flow, a quantity characterizing a flow resistance of the filter; and initiating a filter cleaning operation in dependence upon the determined quantity that characterizes the flow resistance of the filter.