Search International and National Patent Collections

1. (WO2017036754) SUCTION DEVICE AND METHOD FOR OPERATING A SUCTION DEVICE

Pub. No.:    WO/2017/036754    International Application No.:    PCT/EP2016/069028
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Thu Aug 11 01:59:59 CEST 2016
IPC: A47L 9/28
Applicants: ALFRED KÄRCHER GMBH & CO. KG
Inventors: SCHECHTERLE, Michael
HAYN, Henning
DÜNNE, Markus
BENSING, Felix
ROSSKOPF, Christian
FEUCHTER, Bernhard
Title: SUCTION DEVICE AND METHOD FOR OPERATING A SUCTION DEVICE
Abstract:
The invention relates to a suction device comprising a fan device 40 with a drive motor 44 for generating a suction current, and a filter device 46, wherein an acceleration sensor device 64 and/or a microphone device 64' is associated with said fan device 40, and an evaluation device 88 is provided which determines a rotational speed of an impeller wheel of said fan device 40 from measurement data of the acceleration sensor device 64 and/or the microphone device 64'.