A home appliance chemically resistant to peroxide degradation. The home appliance includes a metal substrate disposed therein that includes a metal substrate having a bulk portion and a coating layer contacting a surface of the bulk portion. The coating layer includes a ternary metal oxide compound, a metal alloy, an intermetallic compound, or a combination thereof. The ternary metal oxide compound, the metal alloy or the intermetallic compound is (a) unreactive with hydrogen peroxide or (b)(1) reactive with hydrogen peroxide to form one or more metal oxides unreactive with hydrogen peroxide or reactive with hydrogen peroxide to form one or more metal oxides unreactive with hydrogen peroxide and/or (b)(2) reactive with hydrogen peroxide to form one or more elemental metals reactive with hydrogen peroxide to form one or more metal oxides unreactive with hydrogen peroxide.

A pump of a dishwasher has an integrated heating element, a pump chamber with an inlet and an outlet, a pump rotor inside the pump chamber and a drive motor, wherein the heating element and a temperature sensor are provided on a wall of the pump chamber. For measuring a calcification of the pump chamber it is filled with water and then the pump rotor rotates for mixing the water in the pump chamber without transporting water out of the pump chamber. The temperature of the water in the pump chamber is measured with the temperature sensor as a starting temperature, and then the heating element is activated to heat the water in the pump chamber while the temperature of the water in the pump chamber is measured. Then the heating element is deactivated and the maximum temperature of the water during the heating duration or directly afterwards is determined. A temperature relation between the maximum temperature and the starting temperature of the water is calculated. These steps are executed in the pump at the very beginning of an operation of the new dishwasher after its installation for determining an initial temperature relation. These steps are automatically executed again at a later stage for determining a later temperature relation to determine the heating efficiency of the pump by comparing the later temperature relation to the initial temperature relation.

The object of the present invention is to provide a composition suitable for cleaning cooked-, baked- and burnt-on soils, which has improved efficacy on proteinaceous soils. Detergent compositions having metal complexes with certain salicylidene ligands solve this problem.

A system for dosing substances such as cleaning and/or care agents is disclosed. The system includes a dosing device, at least one energy source, a control unit, a sensor unit, and at least two cartridges for respectively accommodating at least one of the cleaning and/or care agents. The at least two cartridges are capable of being coupled to the dosing device.

Dishwasher, in particular household dishwasher, with a washing compartment a control device for carrying out a washing program from a number of washing programs and with an automatic dosing device for automatically dosing a plurality of dosing quantities from a supply a cleaning agent present as a solid in the washing area, the control device for cleaning the automatic dosing device being set up to control the automatic dosing device to switch to a cleaning state and to control the automatic dosing device for cleaning the automatic Dosing device to carry out a specific wash program from the number of wash programs.

Disclosed is a dishwasher ejecting wash water containing microbubbles. The dishwasher according to an embodiment includes a tub accommodating dishes therein, a plurality of wash arms spraying wash water into the tub, a bubble nozzle ejecting wash water containing microbubbles to the bottom of the tub, a sump disposed below the bottom of the tub and collecting wash water therein, a wash pump pumping wash water collected in the sump, a channel-switching unit supplying wash water pumped by the wash pump to at least one of the plurality of wash arms, and a bubble module generating microbubbles in wash water pumped by the wash pump and supplying the wash water containing microbubbles to the bubble nozzle, and a controller operates the wash pump and controls the channel-switching unit and the bubble module to spray wash water through at least one of the plurality of wash arms and simultaneously to eject wash water through the bubble nozzle.

A wash arm (1) for a commercial dishwasher (50), with a wash arm housing (2) which extends in a longitudinal direction and in which at least one inlet for supplying washing liquid and at least one nozzle opening for spraying the supplied washing liquid are formed, wherein at least one cleaning opening (4) with an assigned opening/closing mechanism (5) is provided preferably at at least one end region of the wash arm housing (2), wherein the opening/closing mechanism (5) is designed to automatically open for thorough rinsing of at least one region of the wash arm housing (2) in particular as required and to automatically close for ending the thorough rinsing of the at least one region of the wash arm housing (2) in particular as required.

A household dishwasher includes a receiving compartment for receiving an item to be washed, a pump sump, and a heat pump assembly through which, during operation, a heat transfer medium flows. The heat pump assembly includes a plate condenser configured to enable a transfer of heat from the heat transfer medium to a washing liquor circulating in the household dishwasher. A spray assembly supplies washing liquor to the item to be washed. A first flow path extends from the pump sump to the spray assembly for conducting the washing liquor, and a second flow path extends from the pump sump to the plate condenser. Means are provided to prevent or hinder foreign matter that is swept along with the washing liquor from adhering to a washing-liquor-facing surface of the plate condenser, or to detach foreign matter adhering to the washing-liquor-facing surface from said surface.

A dishwasher and method utilize an imaging system to perform various diagnostic operations within the dishwasher, including one or more of level sensing, filter cleaning, wash tub rinse down, foam detection, imaging system cleaning, and remote viewing.

A dishwasher and method utilize an image-based position sensor that is positioned to sense the rotational position of a discretely directable tubular spray element driven by a tubular spray element drive.