A discrete zone energy transmission system is provided. The system includes an object treatment area, an array of energy transmission elements configured to direct energy toward predetermined zones in the treatment area, a sensor configured to detect a presence and a location of an object in the treatment area, and a controller in communication with the array of energy transmission elements and the sensor. The controller is configured to receive presence and location data from the sensor, assign the data to the predetermined zones, and control an operation of the array of energy transmission elements to selectively radiate energy from the array of energy transmission elements only toward a select number of zones in the object treatment area based on the presence and location data, thereby selectively radiating the energy from the array of energy transmission elements only toward the object in the treatment area.

A dishwasher includes a tub defining a wash chamber, a wash rack provided within the wash chamber, an air inlet in fluid communication with the wash chamber at a first position, an air exhaust outlet in fluid communication with the wash chamber at a second position different from the first position, a first gas sensor provided in the dishwasher, and a controller configured to initiate an operation sequence. The operation sequence includes initiating a drying cycle, receiving an air-quality signal from the first gas sensor, measuring, during the drying cycle, an air-quality characteristic within the wash chamber of the dishwasher, determining the measured air-quality characteristic is below a predetermined air-quality threshold, calculating a drying time in response to determining the measured air-quality characteristic is below the predetermined air-quality threshold, and halting the drying cycle in response to an expiration of the drying time.

A dishwasher includes: a cabinet defining an external appearance of the dishwasher; a tub disposed in the cabinet to form a space where to wash dishes, and having an exhaust hole formed on an upper surface of the tub; and an external air flow unit forming a flow path, along which external air is introduced and discharged, and having an inflow hole formed above the exhaust hole to communicate with the tub, wherein the external air flow unit takes a shape in which a cross-sectional area of the flow path decreases in an upstream side of the inflow hole in a flow direction of the external air and increases in a downstream side of the inflow hole.

A dishwasher includes: a cabinet defining an external appearance of the dishwasher; a tub disposed in the cabinet to form a space where to wash dishes; a heat exchange module disposed between the tub and the cabinet to form a space in which external air flows, and configured to supply the external air to the tub; and a condensing module disposed between the heat exchange module and the cabinet and configured to perform heat exchange of air discharged from the tub with the external air flowing in the heat exchange module and discharge heat-exchanged air to an outside of the cabinet.

A dishwasher includes a tub defining a wash chamber, a wash rack provided within the wash chamber, an air inlet in fluid communication with the wash chamber at a first position, an air exhaust outlet in fluid communication with the wash chamber at a second position different from the first position, a first gas sensor provided in the dishwasher, and a controller configured to initiate an operation sequence. The operation sequence includes initiating a drying cycle, receiving an air-quality signal from the first gas sensor, measuring, during the drying cycle, an air-quality characteristic within the wash chamber of the dishwasher, determining the measured air-quality characteristic is below a predetermined air-quality threshold, calculating a drying time in response to determining the measured air-quality characteristic is below the predetermined air-quality threshold, and halting the drying cycle in response to an expiration of the drying time.

A dishwasher includes: a cabinet defining an external appearance of the dishwasher; a tub disposed in the cabinet to form a space where to wash dishes; a heat exchanger disposed between the tub and the cabinet to form a space in which external air flows; and a condensing module disposed between the heat exchanger and the cabinet and configured to exchange heat of air discharged from the tub with the external air flowing in the heat exchanger such that the heat-exchanged air flows into the tub.

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.

A system for monitoring the operation of a commercial dishwasher (2), which is embodied as a box-type dishwasher or as a conveyor dishwasher, includes at least one temperature sensor (60) designed to record a temperature profile with respect to time which corresponds to the temperature profile with respect to time to which an item of washware is subjected when it is treated in the dishwasher (2). The system further includes an evaluation device (62) designed to receive and to evaluate the temperature profile recorded by the at least one temperature sensor (60), wherein the evaluation device (62) is further designed to ascertain a value of a notional unit of quantity of heat from the temperature profile recorded by the temperature sensor (60). A dishwasher (2) including a corresponding monitoring system and a method for monitoring the operation of a dishwasher (2) are also provided.

A dishwasher is disclosed. The dishwasher according to an embodiment of the present disclosure comprises a tub and a temperature control device disposed at one side of the tub. The temperature control device comprises: a housing which forms a flow path; a heater which is coupled to one side of the housing; a switch which turns off the heater in response to the temperature of the fluid around the heater ; which has reached a predetermined point, and includes a switch coupling coupled to the housing and a sensor protruding toward inside of the housing and configured to measure the temperature of the fluid; and a holder which is coupled to the housing and configured to fix the switch to the housing and cover the coupling part, wherein the sensor protrudes further toward the inside of the housing than the holder to measure the temperature of the fluid in the housing.

Disclosed a dishwasher, wherein dishes placed on a conveyor are washed, rinsed, and dried while being sequentially conveyed to a washing chamber, a rinsing chamber, and a drying chamber, the dishwasher including: a heat exchanger allowing hot air to be supplied to the drying chamber by heat exchange; a wash water tank in which water supplied to the washing chamber or the rinsing chamber is stored; and a spray device spraying water supplied from the wash water tank onto the dishes placed on the conveyor, whereby it is possible to save energy by providing a single heat exchanger to preheat wash water and rinse water and supply hot air to the drying chamber, and to improve circulation of wash water by a filtering device applied to a structure for reusing wash water, thereby improving sanitation of dishwashing.