Method for cleaning a filter of a vacuum cleaning apparatus and vacuum cleaning apparatus therefor
US10874969B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2016 |
| Grant date | Dec 29, 2020 |
| Priority date | — |
| Expiry date | May 12, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2279/55
- WIPO fieldChemical engineering
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.