Patent · US Active

Electric switching circuit for a clothes dryer

US7858907B2 · kind B2 · utility

1Cited by

5References

14Claims

0Family size

Assignee

BSH Bosch und Siemens Hausgeräte GmbH · DE

Inventors

Thomas Nawrot · Berlin, DE
Bert Peters · Brieselang, DE
Guido Sattler · Falkensee, DE

Key dates

Filing date	Feb 14, 2006
Grant date	Dec 28, 2010
Priority date	—
Expiry date	Oct 8, 2027

Classification

Technology area (CPC H)Electricity
CPC primaryH02H5/048
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

An electric switching circuit with a first current path for operating an electric motor and with a second current path for operating a first heater. The electric motor drives a fan during which an air flow created by the fan is heated by the first heater. A switch for opening or closing the second current path in response to an actual operating state of the electric motor is, in the second current path, connected in series to the first heater. The switch is designed as a bimetallic switch and a second heater is assigned thereto that is arranged and designed for detecting the actual operating state of the electric motor and for controlling the bimetallic switch by changing its ambient temperature in response to the detected operating state.

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