Method for eliminating foam in a drum washing machine and drum washing machine suitable therefor

US8510887B2 · kind B2 · utility

Assignee

• BSH Bosch und Siemens Hausgeräte GmbH · DE

Inventors

• Torsten Hasse · Nauen, DE
• Ingo Schulze · Panketal, DE

Key dates

• Filing date: Jul 9, 2008
• Grant date: Aug 20, 2013
• Expiry date: Nov 12, 2030

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06F2105/02
• WIPO field: Other consumer goods
• WIPO sector: Other fields

Abstract

A drum-type washing machine that includes a program controller, a drum rotatably mounted in a detergent solution tub, a detergent solution discharge system disposed at a base of the detergent solution tub having a detergent solution drain pump, a sensor for determining a foam level and/or a negative time gradient of a liquid/air mixture contained in the detergent solution tub, a drive motor for the drum that adjusts a rotation of the drum to eliminate foam in the drum-type washing machine, and a water supply system that adds a small volume of water continuously or discontinuously if foam is detected by the sensor during the run-up to spin speed of the drum with the detergent solution drain pump switched on continuously or discontinuously.