US 7,536,807 B2
Method and device for safe operation of a program-controlled laundry drier
Carsten Baier, Berlin (Germany)
Assigned to BSH Bosch und Siemens Hausgeraete GmbH, Munich (Germany)
Filed on Nov. 15, 2005, as Appl. No. 11/274,552.
Claims priority of application No. 10 2004 055 940 (DE), filed on Nov. 19, 2004.
Prior Publication US 2006/0107547 A1, May 25, 2006
Int. Cl. F26B 11/02 (2006.01)
U.S. Cl. 34—601 19 Claims
OG exemplary drawing
 
1. A laundry drier equipped with a housing and a rotary drum defining a drying chamber in which a material to be dried is inserted and moved during a drying process, comprising a drive unit for the rotary drum, a heater for heating a drying air stream, a blower for guiding the drying air stream into the drying chamber, means for generating a heating current for heating the drying air stream as a function of a movement of the drum, means for sensing rotational speed of the rotary drum, using a selectively settable rotation sensor, and a trip component operable to interrupt power to the heater when the rotational speed of the rotary drum reaches a predetermined setpoint value.