A dish washing machine including a housing having an interior wash space for washing dishes. The housing has a liquid inlet for adding a liquid to the dish washing machine. At least one spray nozzle sprays the liquid onto dishes positioned within the interior wash space. The machine further includes a heating tank for heating the liquid which is supplied to the at least one spray nozzle for spraying onto the dishes in the interior wash space. At least one heat exchange system is within the housing. The at least one heat exchange system transfers heat from the liquid heated by the heating tank to the liquid added to the dish washing machine from the liquid inlet.

The present disclosure relates to a dishwasher having a heat pump, including a dishwasher body provided with a tub configured with a washing space therein and a sump provided at a bottom of the tub to temporarily accommodate washing water; a heat pump having a compressor, an evaporator, an expansion apparatus, and a condenser provided on an inner bottom surface of the tub to exchange heat with washing water inside the tub; and a controller that controls the heat pump to be driven to increase the temperature of the washing water inside the tub. As a result, the heating time of washing water may be shortened.

The invention relates to a low cost sensor array suitable for use in a ware washing machine, preferably a dish washing machine. The invention also relates to a standalone detergent dispensing device comprising the low cost sensor array. The sensor systems are intended to allow monitoring of wash cycles such that controlled sequential dosing of reagents in wash cycles can be optimized. A device comprising such a sensor system may then be able to sense the conditions of the wash and dose reagents in their optimal sequence in the wash.

A dishwasher appliance includes a cabinet defining a wash chamber, a sensor disposed in the wash chamber, and a controller in signal communication with the sensor. The controller is configured to adjust to one of a plurality of transfer functions in response to an output of the sensor. Each of the plurality of transfer functions is associated with a respective one of a plurality of sensor types.

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.

A method for cleaning items to be cleaned is disclosed. A cleaning device is used that has at least one cleaning chamber and at least one applicator for applying at least one cleaning fluid to the items to be cleaned in the cleaning chamber. A desired hygiene value is prespecified. The method further includes time-resolved recording of at least two influencing variables which influence hygienization of the items to be cleaned. Hygiene share values are determined from the influencing variables using a prespecified relationship between each influencing variable and the respective hygiene value share of said influencing variable. An expected actual hygiene value at the end of the cleaning from the hygiene value shares is ascertained and compared with the desired hygiene value. At least one of the influencing variables is changed based on the comparison. An inventive cleaning device is also disclosed.

A washing machine such as a dishwashing machine, preferably of the drawer-style or table-top style, or a laundry washing machine, the washing machine having at least one low-height wash liquid conduit connecting the outlet of a sump region of a washing tub to a wash pump. A cover plate is provided for covering a section of the washing tub base and the at least one low-height conduit is formed between the base of the washing tub and the cover plate by a combination thereof. The surface of a heating unit forms a surface of the low-height conduit and the sump is provided with multiple outlets.

This invention relates in general to an industrial cleaning apparatus. The cleaning apparatus has a cleaning tank which has a generally rectangular configuration having two opposing major sides, two opposing minor sides and an opening. A lid is pivotally connected to one of the major sides and adapted to allow access to the cleaning tank when opened and to close the opening of the cleaning tank in use. A horizontally disposed support frame supports the kitchen articles within the cleaning tank. A heating system is disposed within the cleaning tank and heats the fluid therein. A lift assembly raises and lowers the support frame by a remotely operated control system. In use, when the lift assembly is remotely controlled to raise and lower the support frame a corresponding vertical motion of the support frame opens and closes the lid.

A dishwasher thermometer captures temperature data of temperature sensed within a dishwasher during a wash cycle. The dishwasher thermometer includes a wireless communication interface that transmits the captured temperature data to one or more of a server and a monitor device. When the captured temperature data indicates that the wash cycle did not achieve defined temperature threshold(s), an alert is generated at the server and/or the monitor device indicating that the wash cycle did not meet appropriate washing conditions. In embodiments, the temperature data may be accessible to a third party for certification of the dishwasher wash cycle.

A dishwasher appliance includes a sump that collects wash fluid and defines a mounting port for receiving a sensor assembly. The sensor assembly includes an adapter that defines a plurality of sensor ports for receiving different sensors, such as a pressure sensor, a temperature sensor, and a turbidity sensor. The adapter is translucent to facilitate turbidity sensing without introducing leak points. In addition, the adapter defines an internal chamber for receiving the wash fluid and an air chamber defined above the internal chamber to prevent direct contact between the wash fluid and the pressure sensor.