Air volume flow and pushing force control device

US8776307B2 · kind B2 · utility

Assignee

• Gerhard Kurz · DE

Inventors

• Detlef Schulz · Hamburg, DE
• Thomas Strehler · Bad Neustadt an der Saale, DE
• Rudolf Hermann · Neuerburg, DE
• Roland Illig · Bad Neustadt an der Saale, DE
• Peter Lehmann · Oebisfelde, DE
• Silvio Hamm · Neuerburg, DE

Key dates

• Filing date: May 28, 2010
• Grant date: Jul 15, 2014
• Expiry date: Feb 25, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02B40/00
• WIPO field: Furniture, games
• WIPO sector: Other fields

Abstract

The invention relates to an air volume flow and pushing force control device for a vacuum cleaner that has at least a motor, a dust receptacle and a suction nozzle, comprising a controller for controlling the motor power, a first sensor for detecting the air volume flow, which in conjunction with the controller forms a first control loop in order to maintain the air volume flow at a prescribed air volume flow value on the basis of the signal of the first sensor. The control device further comprises a second sensor for detecting a pushing force that is required for pushing the suction nozzle, and in conjunction with the controller, forms a second control loop in order to maintain the pushing force below a prescribed value on the basis of the signal of the second sensor, and a control loop selection device that activates one of the two control loops as a function of the signals of the two sensors.