Optical sensor for contamination in a circulating cleaning fluid

US5818063A · kind A · utility

Assignee

• BSH Bosch und Siemens Hausgeräte GmbH · DE

Inventors

• Johann Wilhelmstatter · Giengen an der Brenz, DE
• Helmut Jerg · Giengen an der Brenz, DE
• Bernd Schessl · Dillingen/Saar, DE
• Gerhard Fetzer · Süßen, DE
• Michael Hartmann · Wien, AT
• Markus Höpfl · Lauingen, DE
• Karl-Heinz Rehm · Dischingen, DE
• Rudolf Schmidt · Giengen an der Brenz, DE

Key dates

• Filing date: Mar 20, 1997
• Grant date: Oct 6, 1998
• Expiry date: Mar 20, 2017

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06F2103/20
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

In order to provide in a simple way a household appliance, operated with water with a sensor (10) for contaminations of a circulated cleaning fluid, said sensor being composed of an element (11) transmitting optical signals and of an element (12) receiving optical signals, in which appliance erroneous measurements of the sensor (10) for contaminations of a circulated cleaning fluid are avoided, according to the invention the sensor (10) is arranged in a flow heater (1).