Abstract: A device and a method for detecting deposits on surfaces includes a body having a surface on which deposits occur and influence reflection properties of the surface to electromagnetic radiation. A transmitter transmits electromagnetic radiation to the body and a detector detects the presence of the deposits at the surface. The detector measures electromagnetic radiation received from the transmitter after reflection at the surface. Preferably, the device and method are used in a liquid-conveying machine, particularly, a washing machine and/or a dishwasher. Particularly, light is introduced into the light-guiding body to detect the presence of the deposits. The light is internally reflected by the surface and is guided to a sensor. If deposits occur on the surface, the deposits affect the light-reflecting properties of the surface, and the affect is detected by the sensor.

Abstract: The invention relates to a method and device for carrying out said method in order to fully dissolve impurities in the cleaning fluid and thereby avoid turbidity in said cleaning fluid. According to the invention, the degree of impurity in said cleaning fluid is determined in at least one partial program step by means of wet combustion and the degree of combustion is established and the above-mentioned method is carried out in a water-guiding device.

Abstract: A simple and cost-effective method is provided, according to which a positive temperature component (PTC) element directly controls the element made of a shape memory alloy. A simple and cost effective device for performing the method has a PTC element series-connected upstream from the element made of a shape memory alloy, in the electric circuit for the element made of a shape memory alloy.

Abstract: A method for the open-loop and closed-loop control and documentation of a cleaning operation with a cleaning medium includes the steps of adding at least one indicator to the cleaning medium, setting parameters for at least one partial step in the cleaning operation by comparative measurements of the concentration of the at least one indicator in the mixture including cleaning medium, possibly with detergent and at least one indicator, and documenting at least the parameter settings. The method makes possible an exact result and exact setting of parameters for at least one partial step in the cleaning operation.

Abstract: The invention relates to a method for cleaning objects (3), particularly kitchenware (3), whereby the objects to be cleaned (3) are brought in contact with a washing liquid (5). According to the invention, at least one electric field is generated in at least some parts of the surface of the objects to be cleaned (3).

Abstract: An apparatus allows monitoring the formation of scale. The apparatus makes it possible to determine the degree of water hardness or a tendency of the degree of water hardness to change over time and to take measures for adjusting the desired degree of water hardness accordingly. A translucent or transparent element has two end surfaces, at least one element emitting an optical signal, and at least one element receiving an optical signal. The element emitting the optical signal and the element receiving the optical signal are directly adjacent to the end surfaces of the transparent element, and the end surfaces are disposed such that they remain free of scale build-up at all times.

Abstract: A dishwasher includes a washing receptacle for items to be cleaned, a pump for liquid, a flow heater for liquid, a device for spraying items to be cleaned, a control device for wash cycles of the spraying device, and a device for providing steam having a separate steam dispenser and unit for producing a jet of steam supplied by the steam dispenser. The steam dispenser and the steam jet unit are disposed in the dishwasher in such a way that the steam jet unit always supplies steam to the same predetermined location in the washing receptacle specifically identified and configured for receiving particular items to be cleaned, e.g. particularly dirty items. An uncontrolled escape of steam from any section of the entire washing receptacle is prevented, thus improving the cleaning result with maximum usage of the steam and without also being dependent on activation of a separate steam washing cycle.

Abstract: A dishwashing machine containing spraying devices and at least one dish rack. The dishwashing machine has at least one dish rack having stationary spraying devices to optimally clean material stacked in the at least one rack and increase and optimize storage room in the dishwashing machine.

Abstract: The invention relates to a method and device for determining the deposits of components from a liquid on surfaces, in particular in liquid pumping machines, comprising at least one body upon the surface of which said deposits occur, which affect the properties of an electromagnetic radiation, at least one transmitter and at least one receiver which measures the electromagnetic radiation emitted by the transmitter for the determination of the deposits. According to the invention, a calibration and a descaling of the sensor body may be avoided in a simple manner and whilst guaranteeing the secure function of the method and device, whereby any deposits of components from the liquid are removed from the surface of the body, without moving the body, at the beginning of a new measuring period.

Abstract: A method for the open-loop and closed-loop control and documentation of a cleaning operation with a cleaning medium includes the steps of adding at least one indicator to the cleaning medium, setting parameters for at least one partial step in the cleaning operation by comparative measurements of the concentration of the at least one indicator in the mixture including cleaning medium, possibly with detergent and at least one indicator, and documenting at least the parameter settings. The method makes possible an exact result and exact setting of parameters for at least one partial step in the cleaning operation.

Abstract: A method of operating a dishwasher in which items that are to be cleaned includes subjecting the items to the action of a cleaning liquid by delivering the liquid with a pressurized, gaseous delivery medium. In the method, energy and water can be saved and it is not necessary to comply with any specific inflow requirements to use the method.

Abstract: A device and a method for detecting deposits on surfaces includes a body having a surface on which deposits occur and influence reflection properties of the surface to electromagnetic radiation. A transmitter transmits electromagnetic radiation to the body and a detector detects the presence of the deposits at the surface. The detector measures electromagnetic radiation received from the transmitter after reflection at the surface. Preferably, the device and method are used in a liquid-conveying machine, particularly, a washing machine and/or a dishwasher. Particularly, light is introduced into the light-guiding body to detect the presence of the deposits. The light is internally reflected by the surface and is guided to a sensor. If deposits occur on the surface, the deposits affect the light-reflecting properties of the surface, and the affect is detected by the sensor.

Abstract: A water-conducting household appliance includes a liquid container having a static content level, a fill control device, a cycle control unit, an inflow valve to be opened by the cycle control unit and closed by at least one of the fill control device and the cycle control unit, an evacuation pump, a switch having a switching position in which the switch turns on the evacuation pump and selectably closes the inflow valve, and a chamber hydraulically communicating with the liquid container and having an opening for the entry of water. A safety device for the appliance includes a safety level switch device having a float disposed in the chamber, the float having a switching position in which the float acts upon the switch, and the float having a position of repose in which the float is kept at a distance above the static content level and in which the float acts upon the switch to switch off the evacuation pump.