Abstract: The invention relates to an operating and display device (11) for a domestic appliance, comprising operating means for setting at least one parameter of an operating process of the domestic appliance, a light conductor part (24, 34) for conducting light, a plurality of function symbols (13, 14, 15), which each symbolize a respective selectable value of the parameter, and a lighting device (47) for backlighting the function symbols (13, 14, 15), by means of which lighting device the function symbol (13, 14, 15) associated with the presently selected value of the parameter can be optically distinguished from the other function symbols (13, 14, 15), wherein the operating means are designed as touch-sensitive operating means and have a touch-sensitive actuation surface (16), which is arranged such as to overlap with the function symbols (13, 14, 15) and thus the value of the parameter associated with one of the function symbols (13, 14, 15) can be selected by touching the actuation surface (16) in an overlap area

Abstract: The invention relates to an operating and display device (11) for a domestic appliance, comprising operating means for setting at least one parameter of an operating process of the domestic appliance, a light conductor part (24, 34) for conducting light, a plurality of function symbols (13, 14, 15), which each symbolize a respective selectable value of the parameter, and a lighting device (47) for backlighting the function symbols (13, 14, 15), by means of which lighting device the function symbol (13, 14, 15) associated with the presently selected value of the parameter can be optically distinguished from the other function symbols (13, 14, 15), wherein the operating means are designed as touch-sensitive operating means and have a touch-sensitive actuation surface (16), which is arranged such as to overlap with the function symbols (13, 14, 15) and thus the value of the parameter associated with one of the function symbols (13, 14, 15) can be selected by touching the actuation surface (16) in an overlap area

Abstract: A circuit for operating a household appliance, wherein the circuit includes a switched-mode power supply for converting the power supply of a public power supply network into direct supply voltage. The circuit also includes a controller that is connected to the switched-mode power supply for being supplied with the direct supply voltage and for controlling processes of the household appliance. An EMC filter is provided to protect the public supply network from interference signals from the household appliance. The EMC filter includes a condenser that is connected between a phase conductor pole and a neutral conductor pole of the public power supply network; a bleeder resistor that is connected in parallel with the condenser; and a switch that can be activated by the controller to connect the condenser and the bleeder resistor to the neutral conductor pole.

Abstract: The invention relates to control unit for a domestic appliance, especially for a washing machine with a fascia panel (10) to which is assigned at least one control button (16), indicator (18) or similar arranged within a panel opening (12, 14), with a board 22 for mounting at least one electrical or electronic component (24, 26, 28) arranged at a distance behind the fascia panel (10), and with a sealing element (34) arranged between the fascia panel (10) and the board (22) by means of which the at least one electrical or electronic component (24, 26, 28) is to be protected against water or similar, whereby the sealing element (34) is attached to the fascia panel (10) of the control unit.

Abstract: A circuit for operating a household appliance, wherein the circuit includes a switched-mode power supply for converting the power supply of a public power supply network into direct supply voltage. The circuit also includes a controller that is connected to the switched-mode power supply for being supplied with the direct supply voltage and for controlling processes of the household appliance. An EMC filter is provided to protect the public supply network from interference signals from the household appliance. The EMC filter includes a condenser that is connected between a phase conductor pole and a neutral conductor pole of the public power supply network; a bleeder resistor that is connected in parallel with the condenser; and a switch that can be activated by the controller to connect the condenser and the bleeder resistor to the neutral conductor pole.

Abstract: A display window is particularly suited for LED and/or LC displays. The display window includes a lighting device and a microstructure for illuminating the display window. The microstructure is disposed on the side of the display window facing the display.

Abstract: The invention relates to control unit for a domestic appliance, especially for a washing machine with a fascia panel (10) to which is assigned at least one control button (16), indicator (18) or similar arranged within a panel opening (12, 14), with a board 22 for mounting at least one electrical or electronic component (24, 26, 28) arranged at a distance behind the fascia panel (10), and with a sealing element (34) arranged between the fascia panel (10) and the board (22) by means of which the at least one electrical or electronic component (24. 26, 28) is to be protected against water or similar, whereby the sealing element (34) is attached to the fascia panel (10) of the control unit.

Abstract: A display window is particularly suited for LED and/or LC displays. The display window includes a lighting device and a microstructure for illuminating the display window. The microstructure is disposed on the side of the display window facing the display.

Abstract: A circuit arrangement for a Peltier module for use in a Peltier heat pump for a tumble dryer with the circuit arrangement including a Peltier module having at least one series arrangement of Peltier elements actuable by a DC voltage. Also included is a rectifier operatively associated with a power supply and at least one series arrangement of Peltier elements for producing a rectified DC voltage for use by said Peltier elements. The number of Peltier elements and the manufacturer type of Peltier elements are selected in a manner wherein the Peltier elements of the series arrangement are operated by actuating the series arrangement with the rectified power supply at an operating voltage that is suitable for the use of the Peltier module in a Peltier heat pump.

Abstract: A circuit arrangement for a Peltier module for use in a Peltier heat pump for a tumble dryer with the circuit arrangement including a Peltier module having at least one series arrangement of Peltier elements, with each series arrangement of Peltier elements being configured to receive voltage; and a two-position transfer switch wherein at a first position voltage is applied to the Peltier module and at a second position voltage is not applied to the Peltier module and the Peltier module is connected to another electrical device.

Abstract: A method is provided for operating a converter circuit, in particular a pulse-width modulated frequency converter circuit having a DC voltage intermediate circuit, which controls two or more winding sections of a polyphase dynamo-electrical machine, in particular a three-phase asynchronous motor for a laundry appliance. The method determines one or more parameters of the dynamo-electrical machine, before a rotating field is produced in the dynamo-electrical machine by the converter circuit. The parameters can be used to deduce a variant of the dynamo-electrical machine, and to select open-loop and closed-loop control parameters which are associated with the variant. Likewise, the method allows possible machine faults to be determined by using the parameters.

Abstract: A device 15, 2 to 6 and 10 to 14 for controlling appliance functions and for communicating with a user need not stay switched on during the entire operating time. These mostly include optical indicating means 10 to 14 whose lifetime can be increased if a motion detector 19 is arranged on the household appliance and is operatively connected to the device 15 for controlling and/or the device 2 to 6, 10 to 14 for communicating and if the device 10 to 14 for communicating can only be switched to active on receiving a signal from the motion detector 19.

Abstract: A central power supply device for an electric supply of a domestic appliance and an electronic control unit of the appliance is connected to an output side of an interference suppression filter. The aim is to integrate recurrent, standardized devices in such a way that components are not allocated functions that do not belong to their task domain. To achieve this, an automatically controlled network disconnection device is integrated, together with the interference suppression filter, into the phase conductor, or in addition into the neutral conductor. A power supply device for an electronic control logic circuit of the network disconnection device is connected to the input side of the network disconnection device and the control output of the control logic circuit is connected to the control input of the network disconnection device.

Abstract: A device 15, 2 to 6 and 10 to 14 for controlling appliance functions and for communicating with a user need not stay switched on during the entire operating time. These mostly include optical indicating means 10 to 14 whose lifetime can be increased if a motion detector 19 is arranged on the household appliance and is operatively connected to the device 15 for controlling and/or the device 2 to 6, 10 to 14 for communicating and if the device 10 to 14 for communicating can only be switched to active on receiving a signal from the motion detector 19.

Abstract: A method is provided for operating a converter circuit, in particular a pulse-width modulated frequency converter circuit having a DC voltage intermediate circuit, which controls two or more winding sections of a polyphase dynamo-electrical machine, in particular a three-phase asynchronous motor for a laundry appliance. The method determines one or more parameters of the dynamo-electrical machine, before a rotating field is produced in the dynamo-electrical machine by the converter circuit. The parameters can be used to deduce a variant of the dynamo-electrical machine, and to select open-loop and closed-loop control parameters which are associated with the variant. Likewise, the method allows possible machine faults to be determined by using the parameters.

Abstract: A central power supply device for an electric supply of a domestic appliance and an electronic control unit of the appliance is connected to an output side of an interference suppression filter. The aim is to integrate recurrent, standardized devices in such a way that components are not allocated functions that do not belong to their task domain. To achieve this, an automatically controlled network disconnection device is integrated, together with the interference suppression filter, into the phase conductor, or in addition into the neutral conductor. A power supply device for an electronic control logic circuit of the network disconnection device is connected to the input side of the network disconnection device and the control output of the control logic circuit is connected to the control input of the network disconnection device.