Device for a turbidity sensor for a dishwasher or washing machine

US7392813B2 · kind B2 · utility

Assignee

• MIELE & CIE. KG · DE

Inventors

• Andre Bertram · Bielefeld, DE
• Erik Berends · Bielefeld, DE
• Michael Reilmann · Bielefeld, DE

Key dates

• Filing date: Apr 28, 2004
• Grant date: Jul 1, 2008
• Expiry date: Oct 14, 2025

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2021/054
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A device for preventing foam or air bubbles from accumulating in a measuring zone of a turbidity sensor connected in a wash-water circuit of a dishwasher or washing machine includes a main flow conduit and a bypass conduit connected to the main flow conduit. The bypass conduit includes a first conduit section branching off from the main flow conduit, a second conduit section leading back into the main flow conduit at a junction, and an enlarged region of reduced flow velocity connected upstream of the junction. The enlarged region provides the measuring zone for the turbidity sensor, and includes a curved baffle and a downward-facing bulbous protuberance opposite the baffle so as to form a backflow region. The measuring zone is located within the backflow region in the bulbous protuberance.