Suction-type cleaner with dedusting control for the filter or filters
US10470632B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 14, 2014 |
| Grant date | Nov 12, 2019 |
| Priority date | — |
| Expiry date | Jul 7, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L9/2857
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A method for operating a suction-type cleaner, in which, in a manner controlled in the filter dedusting position by an electromagnetically actuated switchover valve arrangement (19, 20, 21), at least one filter (9), through which the dirt-laden air flow passes, is dedusted in the opposite direction to said air flow, and the dirt-laden suction air from the dirt-collecting container (1) firstly passes through the at least one filter (9) which is adjoined, in the flow direction, by a suction chamber (12), which is adjoined downstream by an intermediate chamber (26) which is arranged on the suction side of the turbine (30), and a pressure chamber (34) is arranged downstream of the turbine (30), wherein, in order to reduce the actuating force of the switchover valve arrangement (19, 20, 21) in the dedusting position of the suction-type cleaner, the pressure between the pressure chamber (34) and the intermediate chamber (26) is equalized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.