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.

A household dishwasher includes: a washing water spray nozzle module disposed on an area of inner surfaces of a washing chamber and spraying washing water, which is supplied from a water supply tube, into the washing chamber; a steam generation module disposed in the washing chamber and supplying steam into the washing chamber using the washing water supplied from the washing water spray nozzle module; an induction module disposed on an outer surface of the washing chamber and heating the washing water supplied in the washing chamber; an ultrasonic vibration module disposed on an outer surface of the washing chamber and applying ultrasonic vibration to the washing water in the washing chamber to perform ultrasonic washing; and a controller disposed in a body and controlling operational relationships of internal components in response to washing order signals from a user.

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 present disclosure relates to a dishwasher for washing the dishes and the cooking utensils by spraying washing water and steam. The dishwasher according to an embodiment of the present invention includes a tub which accommodates a washing object, a sump which is disposed in a bottom of the tub and stores washing water, a spray arm which sprays the washing water into the tub, a washing pump which sends the washing water stored in the sump to the spray arm, and a check valve which is disposed between the sump and the washing pump and opened in a direction of the washing pump from the sump.

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.

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.

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 dishwashing appliance includes a tub defining a wash chamber therein for receipt of articles for washing, a heating element, a sump positioned at a bottom of the wash chamber for receiving fluid from the wash chamber, a drain pump in communication with the sump, and a temperature sensor. Methods of operating the dishwashing appliance may include filling the sump with a liquid and heating the liquid by activating the heating element. Such methods also may include measuring a temperature of a liquid in the sump with the temperature sensor and comparing the measured temperature of the liquid to a minimum drain temperature threshold. Such methods may include draining the liquid from the sump after the measured temperature is equal to or greater than the minimum drain temperature threshold, such as immediately after heating the liquid.

The present disclosure relates to a dishwasher for washing the dishes and the cooking utensils by spraying washing water and steam. The dishwasher according to an embodiment of the present invention includes a tub which accommodates a washing object, a sump which is disposed in a bottom of the tub and stores washing water, a spray arm which sprays the washing water into the tub, a washing pump which sends the washing water stored in the sump to the spray arm, and a check valve which is disposed between the sump and the washing pump and opened in a direction of the washing pump from the sump.

A dishwashing appliance and methods for operating the same may provide a cabinet, a tub, a door, a spray assembly, a heating element, and a controller. The door may be rotatably mounted to the cabinet to move between a fully-open position, a preset open-vent position, and a closed position. The preset open-vent position may be between the fully-open and closed positions. The spray assembly may be positioned within the wash chamber. The heating element may be mounted within the cabinet in thermal communication with the wash chamber. The controller may be configured to initiate a dry cycle. The dry cycle may include moving the door from the closed position, determining the door is in the preset open-vent position following moving the door from the closed position, and activating the heating element to generate heat within the wash chamber following moving the door from the closed position.