Patent · US Active

Method for pumping a fluid out of an aquiferous household device

US9609996B2 · kind B2 · utility

0Cited by

5References

44Claims

0Family size

Assignee

BSH Hausgeräte GmbH · DE

Inventors

Michael Fauth · Pleinfeld, DE
Erwin Oberstaller · Buttenwiesen, DE
Andreas Reiter · Feldkirchen-Westerham, DE
Roland Rieger · Waiblingen, DE

Key dates

Filing date	Dec 4, 2009
Grant date	Apr 4, 2017
Priority date	—
Expiry date	Oct 15, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/0324
WIPO fieldFurniture, games
WIPO sectorOther fields

Abstract

In a method for pumping a fluid out of an aquiferous household device such as a dishwashing machine, a drain pump and a circulation pump are operated at least partially simultaneously to ensure that, in the event of an abrupt stop of the circulation pump, reverse flow that may cause filter cake formed by separating soiling and particles to loosen resulting in their re-soiling of the items to be cleaned. The speed of the circulation pump is lowered from a maximum speed to at least a minimum speed substantially without pressure surges before startup of the drain pump.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.