Method for operating a suction device and suction device

US11889972B2 · kind B2 · utility

Assignee

• ALFRED KÄRCHER SE & CO. KG · DE

Inventors

• Thorsten Langen · Stuttgart, DE
• Michael Kaiser · Leutenbach, DE
• Gábor Peflof · Winnenden, DE
• Juergen Steinbach · Morbach, DE
• Heiko Stoecker · Eßlingen, DE

Key dates

• Filing date: Jan 31, 2020
• Grant date: Feb 6, 2024
• Expiry date: Mar 18, 2041

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2279/55
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A method is provided for operating a suction device that includes a suction unit and a removable filtering device. The suction unit generates a suction flow that flows through the filtering device when arranged on the suction device, in which, after the suction unit is started up, a check is performed of whether the filtering device is present, and if detected as not present, the suction unit is switched off. An evaluation unit uses check data to determine whether a switch-off signal is to be generated for the suction unit. The evaluation unit uses an algorithm or a table to arrive at a decision on switching off the suction unit based on the check data. The table contains at least one threshold value or the algorithm defines at least one threshold value, wherein the at least one threshold value is a threshold value for switching off the suction unit.