A washing appliance is provided, including a tub configured to house items to be washed; an inlet valve configured to be operated in an open condition for causing washing fluid to be loaded into the tub and in a closed condition for preventing washing fluid to be fed to the appliance; a circulation pump configured to circulate the washing fluid in the tub during a washing cycle; a control unit configured to determine an operative state of the circulation pump between a saturation state indicative that sufficient washing fluid is present in the tub to prevent air from being drawn out by the circulation pump, and a starvation state indicative that insufficient washing fluid is present in the tub to prevent air from being drawn out by the circulation pump. The control unit is further configured to receive an indication of a target speed for the circulation pump based on a user-selected washing cycle and/or on a phase of the user-selected washing cycle; control the current speed of the circulation pump based on the target speed, the inlet valve condition, the operative state of the circulation pump; operate the inlet valve based on: the target speed, the current speed of the circulation pump, and the operative state of the circulation pump.

This disclosure proposes a cleaning device for cleaning items to be cleaned. The cleaning device has at least one fluid device for applying at least one cleaning fluid to the items to be cleaned. The cleaning device has at least one electrical load. The cleaning device further has at least one electrical connection for supplying electrical energy to the cleaning device. The cleaning device further has at least one energy store. The cleaning device is designed to receive electrical energy via the electrical connection and to temporarily store said electrical energy in the energy store. The cleaning device is further designed to supply electrical energy from the energy store to the at least one electrical load.

A method, system, and computer-program product for preventing overfilling in a dishwasher are disclosed herein. According to one embodiment, a method for preventing overfilling in a dishwasher is provided, wherein the dishwasher includes a water valve for providing water to the dishwasher and a drain pump for removing water from the dishwasher. The method comprises detecting an overfill condition in the dishwasher with at least one detection device, wherein the overfill condition corresponds to a water level in the dishwasher that is greater than a predetermined threshold. The method further includes controlling the drain pump and the water valve in response to detecting the overfill condition in order to facilitate removal of the overfill condition.

A warewash machine for washing wares includes a chamber for receiving wares, the chamber having at least one wash zone. A waste heat recovery unit is arranged to transfer heat from exhaust air of the machine to incoming water traveling along a water flow path through the waste heat recovery unit to a booster heater of the machine. A refrigerant medium circuit includes at least a first condenser arranged to deliver refrigerant medium heat to the incoming water. A control arrangement monitors subcooled refrigerant medium condition and responsively modifies operation of one or more of: (i) speed of a compressor of the refrigerant medium circuit, (ii) speed of an exhaust fan that causes air flow across the waste heat recovery unit or (iii) speed of a pump that controls incoming water flow along the water flow path.

A household appliance includes a circulation pump for circulating dishwashing liquid in a washing compartment of the household appliance. A drain pump empties the dishwashing liquid from the washing compartment. For the purposes of ventilating the drain pump, a control device is provided to activate the drain pump after the washing compartment has been filled with the dishwashing liquid and before or during operation of the circulation pump.

A dishwasher for treating dishes according to at least one cycle of operation and having a tub at least partially defining a treating chamber and defining an access opening, a sprayer providing a spray of liquid into the treating chamber, a liquid recirculation system defining a recirculation flow path for recirculating the sprayed liquid from the treating chamber to the sprayer, and an air supply system having a conduit configured to function as an overflow conduit.

A dishwashing appliance may include a cabinet, a tub, a pump, a spray assembly, a fluid recirculation duct, a cold water loop, a heat exchanger, and a tub fan. The fluid recirculation duct may extend from a path inlet to a path outlet to recirculate air within a wash chamber. The cold water loop may define a cold water nozzle disposed within the fluid recirculation duct to provide a condensing, cold-water flow into the fluid recirculation duct between the path inlet and the path outlet. The heat exchanger may be mounted to the cold water loop outside of the fluid recirculation duct to cool water within the cold water loop. The tub fan may be configured to selectively motivate an airflow from the path inlet to the path outlet.

A dishwasher appliance connected to a water supply circuit includes a tub defining a wash chamber; a pump in fluid communication with the wash chamber; a user interface comprising at least one input; and a controller operably coupled with the user interface and the pump, the controller being configured to perform a winterization operation. The winterization operation includes determining that a municipal water source has been disconnected from the water supply circuit; supplying a volume of water to the wash chamber after determining that the municipal water source has been disconnected; determining that the volume of water within the wash chamber is greater than a predetermined minimum volume of water; circulating, via the pump, the volume of water within the wash chamber for a predetermined length of time; and draining the volume of water from the wash chamber after circulating the volume of water for the predetermined length of time.

A dishwasher includes: a tub, a water storage chamber provided under the tub and configured to store water from inside the tub, a filter disposed in the water storage chamber and configured to filter water flowing into the water storage chamber, a drain pump configured to discharge the water accommodated in the water storage chamber to the outside, and a controller including at least one processor, comprising processing circuitry. The controller may be configured to control the drain pump to discharge the water accommodated in the water storage chamber to the outside based on the lapse of a specified soaking time after completion of a water supply operation or a jet operation.

A dishwasher includes a pump facility to selectively supply washing liquor to first and second spray apparatuses, an intensive spray apparatus assigned to the first or second spray apparatus and brought into an activated or deactivated state by a switch valve, and a control apparatus for carrying out a washing program and for detecting a first pump flow while the first spray apparatus is supplied with washing liquor and detecting a second pump flow while the second spray apparatus is supplied with washing liquor, so as to form a current differential value as a function of the first and second pump flows and to ascertain a current switch state of the intensive spray apparatus as a function of the current differential value, a number of stored earlier differential values and a predetermined class differential value. The control apparatus adapts the washing program as a function of the current switch state.