| Patent application number | Description | Published |
|---|
| 20090028214 | Method for monitoring a temperature-dependent resistor, particularly in a clothes dryer - A method for monitoring the proper functioning of a temperature-dependent resistor, particularly a NTC resistor, for measuring the temperature of a medium heated by a heat source. Said medium is preferably the air flow in a clothes dryer for drying clothes. In order to increase the safety of a device, in particular a clothes dryer, where the temperature-dependent resistor is used in combination with a heat source, it is checked, once the heat source is switched on, whether the temperature measured by the resistor after a first predetermined period of time following the switching on of the heat source falls below a predetermined temperature threshold value. If this is the case, monitoring of a resistor-temperature curve characteristic of the temperature-dependent resistor is carried out. | 01-29-2009 |
| 20090077828 | Electric switching circuit for a clothes dryer - 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. | 03-26-2009 |
| 20090113747 | Washing Household Device, in Particular a Clothes Dryer - The invention relates to a washing household device, in particular to a clothes dryer, that includes an air-supply device which is arranged on a rear side area thereof and is provided with a closed self-contained cross-section flow channel. | 05-07-2009 |
| 20090126220 | Method for detecting the standstill of a drum in a tumble dryer, and tumble dryer which is suitable for this purpose - A method for detecting the standstill of a drum in a tumble drier during the drying of damp laundry by means of process air which is heated by a heating device in an inflow channel in front of the drum and passes into an outflow channel after passage through the drum, wherein the conductivity of the laundry is measured in the drum and the change in the conductivity is evaluated with regard to the detection of the standstill of the drum. Here, the temperature of the process air is measured by means of a temperature sensor which is arranged in the outflow channel after the drum, and the change in the temperature of the process air is evaluated with regard to the detection of the standstill of the drum. The invention also relates to a tumble drier which is suitable for this purpose. | 05-21-2009 |
| 20090139107 | Exhaust air dryer with a heat pump and a first fan - The invention relates to an exhaust air dryer with a drying compartment for objects to be dried, a supply air duct upstream of the drying compartment, a first fan for the supply of process air from a supply air inlet to the drying compartment and to an exhaust air outlet, an exhaust air duct between the drying compartment and the exhaust air outlet and a heat pump, with a heat sink in the exhaust air duct and a heat source in the supply air duct, characterized in that the first fan in the supply air duct is arranged between the supply air inlet and the heat source and a second fan in the supply air duct is arranged between the heat source and the drying compartment. | 06-04-2009 |
| 20090269219 | Domestic appliance with a sound damper - A sound absorber for a flow of gas which is subjected to a noise, including a pipe section which is substantially straight along an axis, is bounded by two openings which are situated one behind the other with respect to the axis and which has a guide body which is fitted into the pipe section approximately on the axis and is held by at least one spoke. A projection of the guide body parallel to the axis on a surface which contains the openings covers this opening substantially completely, and gas can flow around the guide body and an inner surface which faces said guide body substantially without turbulence in the flow. | 10-29-2009 |
| 20100155039 | DOMESTIC APPLIANCE WITH AN OPEN AIR DUCT - A domestic appliance includes an open air duct and a flow cross-section adjuster in the air duct for adjusting a flow cross-section of the air duct. The flow cross-section adjuster includes rotatably mounted blades for noise dampening purpose. The air duct and the flow cross-section adjuster are in a cooling air inflow region relative to a heat exchanger or a compressor of the domestic appliance. | 06-24-2010 |
| 20100281707 | EXHAUST AIR DRYER HAVING FAN - An exhaust air dryer having a housing that encloses an inner space, wherein the following structures are arranged in the inner space: a drying chamber for items to be dried; a supply air duct between a first supply air inlet and the drying chamber to supply air; a heater to heat the supply air in the supply air duct; a fan to guide heated supply air through the drying chamber; and an exhaust air duct arranged between the drying chamber and an exhaust air outlet on the housing to exhaust air. The fan is a dual-flow fan having a first flow path and a second flow path, wherein the first flow path is arranged in the exhaust air duct and the second flow path is arranged in the supply air duct. | 11-11-2010 |
| 20100293804 | DRYER HAVING HEAT PUMP AND FAN - A dryer having a drying chamber for items to be dried; a process air guide; a fan to deliver an air stream in the process air guide; and a heat pump that has a heat sink and a heat source; wherein the heat sink and the heat source are arranged in the process air guide; and wherein the fan has double pipes. | 11-25-2010 |
| 20110030238 | VENTED DRYER HAVING REDUCED CONDENSATION FORMATION AND METHOD FOR OPERATING THE SAME - A vented dryer having a drum to dry damp laundry by warm process air; a first process air channel upstream of the drum; a heater to heat the process air in the first process air channel; a supply air channel opening into the first process air channel; a second process air channel downstream of the drum; an outlet air channel originating from the second process air channel; a first blower in the first process air channel; and an auxiliary air channel through which auxiliary air is supplied from the environment of the vented dryer. The auxiliary air channel opens into the outlet air channel. | 02-10-2011 |
| 20110119951 | DEVICE FOR DETERMINING THE CONDUCTANCE OF LAUNDRY, DRYERS AND METHOD FOR PREVENTING DEPOSITS ON ELECTRODES - A device for determining the conductance of laundry in a drier. The device comprises at least two electrodes and means for dissipating heat from at least one part of at least one of said electrodes. The invention further relates to a drier comprising at least one area for receiving laundry and at least two electrodes for measuring the conductance of the laundry, at least one of the electrodes at least partly bordering said receiving area. Means for cooling at least one part of at least one of the electrodes are also provided inside the drier. Also disclosed is a method for preventing the formation of layers on electrodes used for measuring conductance in a drier. | 05-26-2011 |
| 20110119952 | DRYING METHOD AND CONDENSATION DRYER COMPRISING A HEAT PUMP AND SYSTEM FOR RECOGNIZING AN UNALLOWABLE OPERATING STATE - A condensation dryer is provided that includes a drying chamber for items to be dried; a process-air circuit having a first fan; a heat pump in which a coolant circulates; an evaporator; a compressor; a condenser; a throttle; a temperature sensor to measure a temperature of the coolant; a cooler for the heat pump; and a controller. The condensation dryer further includes a comparator to compare the measured temperature of the coolant to a limit temperature that is stored in the controller and to switch on and operate the cooler during a period of time if the measured temperature of the coolant is equal to or greater than the limit temperature. The condensation dryer also includes an evaluator to evaluate a change in the measured temperature of the coolant during the period of time with regard to a non-permitted operating state of the condensation dryer. | 05-26-2011 |
