The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 29, 2020
Filed:
Sep. 19, 2016
Alfred Kärcher Gmbh & Co. KG, Winnenden, DE;
Maic Hensel, Backnang, DE;
Markus Oesterle, Althuette, DE;
Alfred Kärcher SE & Co. KG, Winnenden, DE;
Abstract
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.