Surface cleaning machine having a wetting device

US10130230B2 · kind B2 · utility

Assignee

• ALFRED KÄRCHER SE & CO. KG · DE

Inventors

• Fabian Moser · Schorndorf, DE
• Manuel Schulze · Kornwestheim, DE
• Christoph Rufenach · Ditzingen, DE
• Johanna Buchmann · Stuttgart, DE
• Andreas Mueller · Zeitlarn, DE

Key dates

• Filing date: Apr 11, 2017
• Grant date: Nov 20, 2018
• Expiry date: Apr 11, 2037

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A47L11/4088
• WIPO field: Furniture, games
• WIPO sector: Other fields

Abstract

A surface cleaning machine including at least one cleaning roller, a drive device for rotary driving of the at least one cleaning roller, a wetting device for applying cleaning liquid to the at least one cleaning roller, and a suction unit arrangement for generating a suction stream is provided. The suction unit arrangement is fluidically connected to at least one suction duct and at least one suction nozzle that is associated with the at least one cleaning roller. The wetting device includes at least one pressure-controlled switch that opens a fluid path for cleaning liquid to the at least one cleaning roller and shuts off the fluid path, and the at least one pressure-controlled switch is coupled to the at least one suction duct, wherein a suction stream in the at least one suction duct moves the pressure-controlled switch into the open position and/or maintains the open position.