The invention concerns a household appliance, the household appliance comprising: a washing chamber for washing of items to be cleaned; a water system configured to feed water to and from the washing chamber for cleaning and/or rinsing of the items therein; wherein the water system comprises a UV-treatment chamber for disinfection and/or sterilization of water to be fed to the washing chamber during operation of the household appliance, wherein the UV-treatment chamber is provided with at least a first UV-light source arranged to direct UV-light towards water present in the UV-treatment chamber. The UV-treatment chamber is further provided with at least a first UV-light reflector. The invention also concerns a method for operating a household appliance.

A method of operating a dishwashing machine including determining user satisfaction with a dishwashing cycle, adjusting at least one operational parameter of the dishwashing cycle based on the user satisfaction, and incorporating the adjusted operational parameter into a subsequent dishwashing cycle.

Method for operating a shortened dishwashing cycle of a dishwasher, dishwasher configured for running the shortened dishwashing cycle and computer program product for operating a shortened dishwashing cycle of a dishwasher. The dishwasher (10) includes a tub (12) configured to hold dishware during a dishwashing cycle, at least one circulation pump (50, 250), at least one heating element (230), and a controller (40, 240) configured to operate the dishwasher. The controller (40, 240) is configured to operate the dishwasher (10) according to at least one of a normal dishwashing cycle or the shortened dishwashing cycle. The method includes providing a first amount of warm water to the tub (12). The first amount of warm water is greater than a standard amount of water provided to the tub (12) for the normal dishwashing cycle. The method further includes, while the first amount of warm water is being provided into the tub (12), pulsing the circulation pump (50, 250) based on a predetermined timing sequence and activating the heating element (230) to heat the water within the tub (12).

The present invention provides a method of dispensing a plurality of treating compositions into a multistage automatic washing machine. The method comprises operating a device in the machine. The device comprises at least two chambers. Each chamber contains a treating composition. The chambers are activated in response to input from a sensor. The device has an associated reservoir for collection of wash liquor.

A dishwasher, in particular a domestic dishwasher, includes a washing compartment for accommodating items to be washed, a container delimiting the washing compartment, a pump for circulating washing liquid in the container, a wash program control apparatus for executing at least one wash program and for activating the pump, and at least one optical detector connected to the wash program control apparatus for optically detecting at least one compartment section or segment of the washing compartment. The wash program control device adjusts the wash program based on the state in the washing compartment detected by the optical detector. The optical detector is rotatably mounted inside the container so that different compartment sections or segments of the washing compartment are detected by the optical detector in dependence on or as a function of the position and/or the location of the optical detector.

A personalized cleaning composition dispensing device for use in an automatic dishwasher dispensing the right chemistry at the right time during a wash cycle to provide an improved cleaning performance compared to standard automatic dishwasher dispensers. The device includes wash cycle sensing system that controls the release of chemistry via temperature and water flow data measured during the current wash cycle and uses either a preprogrammed product release algorithm for new wash cycles or a modified product release algorithm based on wash cycle data previously stored in the data storage unit for repeated wash cycles.

The present invention provides a method of dispensing a plurality of treating compositions into a multistage automatic washing machine, as well as a dispensing device comprising an associated reservoir for collection of wash liquor and at least two chambers containing a treating composition. Said chambers are activated in response to an input from a sensor.

A nozzle assembly for spraying wash water at an inside a washing tub and a dishwasher having the same, the nozzle assembly including a nozzle configured to rotate on a rotating axis thereof, an inside rotor having a shape of a cylinder and configured to rotate according to a rotation of the nozzle while coupled to the rotating axis, and an outside rotor case having a larger radius than a radius of the inside rotor to accommodate the inside rotor therein, and having an opening hole through which the rotating axis passes, and the rotating axis of the nozzle revolves around a circumference of the opening hole.

The present invention provides a water quality sensor for household appliance which is installed inside of a washing appliance, including a housing and a detecting module contained therein. The detecting module includes a light emitting element for emitting a detecting beam passing through the transparent panel, and a light receiving element for receiving a backscattered beam generated from the detecting beam and backscattered by the cleaning medium. The light emitting element and the light receiving element are positioned on a same plane of a circuit board parallel to the transparent panel, and the detecting beam emitted from the light emitting element is blocked by a sensor holder from being directly received by the light receiving element, such that the water quality sensor determines the water quality of the cleaning medium contained in the household appliance based on the backscattered beam.

A dishwasher includes an independent presoak system which may be activated by a user of the dishwasher. The dishwasher presoak system utilizes a storage tank, supply tubes, and set of nozzles which are independent from components used in a washing cycle such that a presoak detergent is applied to items placed within a washing compartment of the dishwasher without being diluted by a standard wash cycle. As part of the presoak system, the dishwasher features a detection system which allows the user to select an automatic presoak operating state whereby the dishwasher utilizes a sensor to determine if items placed into the washing compartment are sufficiently dirty to need a presoak cycle prior to a washing cycle. The dishwasher further relies on a control system to analyze samples taken of the dirtiness levels of items placed within the washing compartment and determine whether a presoak option is necessary or suggested.