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 |
20090044422 | Method for detecting volatile, flammable substances in a dryer and a dryer suitable for this purpose - A method for detecting a volatile, flammable substance during drying of moist textiles in a dryer with a drum for receiving includes irradiating the textiles or their environment with infrared radiation, receiving infrared radiation from the textiles or their environment in a wavelength range of 600 to 4000 cm-1, and evaluating the received infrared radiation. | 02-19-2009 |
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 |
20090211108 | Method for Drying Sensitive Articles - A method for drying sensitive articles, essentially textiles made of wool, which are to be dried in the washing drum of a clothes dryer using a computer program. According to known methods for protecting sensitive articles to be dried during a drying program, the articles to be dried are introduced into a protective device which, filled with the articles to be dried, is then inserted into the washing drum before the start of the drying program. In order to prevent damage to the sensitive articles to be dried whenever the protective device is not used, a warning signal is generated prior to the start of the drying program when the protective device containing the sensitive articles to be dried is not properly fixed to the clothes dryer. | 08-27-2009 |
20090293301 | Device and Method for Drying Laundry - A device and a method for drying laundry includes an essentially closed channel system for conveying a stream of air that acts on the laundry are a treatment chamber for loading the laundry, a blower to drive the airflow, a heater to heat the airstream before it strikes the laundry, and a cooler to cool the airstream after it strikes the laundry. The airstream flows through a heat pump in the channel system, encompassing a pump unit, a cold branch, and a warm branch, that are joined to each other in parallel and through which the appropriate parts of the airstream can flow in parallel. | 12-03-2009 |
20090313848 | METHOD AND HOUSEHOLD APPLIANCE FOR DRYING WET LAUDRY - A household appliance for drying damp laundry that includes a heating device that generates warm air, a laundry drum for accommodating laundry, a motor for driving the laundry drum, a measuring device that measures a dampness value or a measured value of the laundry, a temperature measuring device that determines a temperature variable in response to a predetermined dampness value or a measured value of the laundry being reached, and a controller for controlling the heating device and the motor, for analyzing the dampness value or the measured value of the laundry, and for terminating drying based upon the temperature variable corresponding to a respective laundry type or a respective state of loading of the laundry drum. | 12-24-2009 |
20100218396 | METHOD FOR DETERMINING THE SWITCH-OFF MOMENT OF A CARE PROCESS - A household appliance includes a sensor that senses an electrical resistance of items of laundry, and a controller that defines a course of a total heat energy for the care of the items of laundry, determines an electrical voltage drop based upon the sensed electrical resistance, and determines a switch-off moment of a care process for treating the items of laundry as a function of the course of the total heat energy during the care process, a total of the predefined total heat energy, and the actual value of the electrical voltage of the items of laundry. | 09-02-2010 |
20110056523 | METHOD FOR CLEANING THE HEAT EXCHANGER OF A DRYER - A method for cleaning a component of a domestic appliance for laundry items. During a cleaning process, a rinsing fluid is at least once conducted through the component. Further, foreign bodies are cleansed from the component. The cleaning process is automatically started and a rinse cycle is performed in which the rinsing fluid is at least once introduced into the component. The rinse cycle is performed after a care process and during a process that prevents creases in the dry laundry items. The dry laundry items are still in the domestic appliance. | 03-10-2011 |
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 |
20110173838 | CONDENSATION DRYER WITH A HEAT PUMP AND RECOGNITION OF AN IMPERMISSIBLE OPERATING STATE AND METHOD FOR THE OPERATION THEREOF - A condensation dryer is provided which has a heat pump in which a coolant circulates; a compressor; a temperature sensor to measure a temperature of the coolant; and a controller. The controller has a first comparator to compare the temperature of the coolant with an upper limiting temperature of the coolant; a switch to switch the compressor off if the temperature of the coolant is greater than or equal to the upper limiting temperature and to switch the compressor on after each compressor disconnection. A counter ascertains the number of occurrences at which the compressor is switched off. The counter is incremented by 1 each time the compressor is switched off. A second comparator compares the number of occurrences with a prespecified limiting number and evaluates the difference between the number of occurrences and the prespecified limiting number with respect to the presence of an impermissible operating state. | 07-21-2011 |
20110178653 | CONDENSATION DRYER WITH A HEAT PUMP AND RECOGNITION OF AN IMPERMISSIBLE OPERATING STATE AND METHOD FOR THE OPERATION THEREOF - A condensation dryer having a temperature sensor to measure a temperature of a coolant; a first comparator to determine a temperature difference between a first temperature of the coolant and a second temperature of the coolant that is measured after a period of time and to compare the temperature difference with a limiting temperature difference stored in a controller; a counter to ascertain a number of occurrences in which the temperature difference is greater than or equal to the limiting temperature difference; and a second comparator to compare the number of occurrences with a limiting number stored in the controller and to evaluate a number difference between the number of occurrences and the limiting number with respect to the presence of an impermissible operating state. A first impermissible operating state is indicated if the number difference is greater than or equal to a value stored in the controller. | 07-21-2011 |