A dishwasher has a housing (10) with a wash chamber (20) and a top wall (204) with a non-planar surface (214;214) facing downwardly into the wash chamber, the surface having portions (216,218; 226,228) facing downwardly and facing in different horizontal directions (H1,H2; HX,HY,HP,HQ). Nozzles (402) mounted within the wash chamber spray a liquid upwardly within the wash chamber. The surface portions redistribute the upwardly-sprayed water in horizontal directions to provide a more uniform washing action. A portable dishwasher may have a fresh water reservoir (422) and a used water reservoir (430) mounted in the housing beneath the wash chamber. The used water reservoir may be removably mounted in the housing so that the user can remove used wash water by removing the used water reservoir. The portable dishwasher can be used at a location remote from a sink.

Methods of operating a dishwashing appliance are provided herein. A method may include measuring a temperature at a temperature sensor and identifying a runaway heat condition within a wash chamber based on the measured temperature. The method may also include directing a volume of water to the wash chamber in response to identifying the runaway heat condition and circulating the volume of water within the wash chamber for a recirculation period.

Disclosed is a dishwasher comprising: a tub for containing dishes; a nozzle assembly for ejecting washing water; a vane assembly for changing the path of the washing water, while moving from a first position to a second position inside the tub, such that the ejected washing water is directed towards the dishes; and a controller for stopping the vane assembly, changing the movement speed of the vane assembly, or changing the movement direction of the vane assembly while the vane assembly moves from the first position to the second position, wherein the washing water can also be ejected to corner portions of the tub.

A dishwasher utilizing one or more sprayer rings disposed proximate to one or more tines of a dishwasher rack, where the sprayer ring(s) are in fluid communication with a fluid supply that is configured to supply a fluid to the one or more sprayer rings to spray fluid onto utensils disposed within the wash tub.

A dishwasher includes a dishwashing container, a lower holder for items to be washed arranged in the dishwashing container, and an upper holder for items to be washed which is arranged in the dishwasher container above the lower holder. A control device executes a dishwashing program from a number of dishwashing programs for washing the items to be washed by actuating a hydraulic facility in such a manner that in a first segment of the dishwashing program a washing liquor having a first washing liquor temperature is only sprayed by a lower spray facility onto the lower holder and in a second segment of the dishwashing program following the first segment washing liquor having a second washing liquor temperature that is lower than the first washing liquor temperature is sprayed by an upper spray facility onto the lower holder and the upper holder.

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 spray arm provided inside the washing space to spray washing water; a circulation pump that pumps the washing water of the sump; a washing water guide that guides the washing water pumped by the circulation pump to the spray arm; a heat pump provided with a compressor, an evaporator, an expansion apparatus, and a condenser provided to exchange heat in contact with the washing water of the washing water guide; and a controller that controls the heat pump to increase the temperature of the washing water of the washing water guide. As a result, it may be possible to suppress heat loss from being generated while heating washing water.

A dishwasher includes a washing system configured as a recirculation loop and a dirt discharge system associated with the washing system. The dirt discharge system is associated with a separator apparatus configured so as to separate at least a portion of the washing liquid required to empty a dirt collection region of the dirt discharge system and discharged together with the dirt particles from the dirt collection region from the dirt particles discharged from the dirt collection region and to return the separated washing liquid back to the water circulation of the dishwasher.

A flood detection sensor for a dishwasher appliance is provided. The flood detection sensor includes features that allow for detection of flood events or tub overfills without sacrificing performance or efficiency of the dishwasher during normal operating conditions and for secure mounting to a tub lip of the dishwasher.

A method and a dishwasher utilize a dock detection system to determine when a connector of a spray device is docked to a docking port provided on a manifold of the dishwasher. A dock detector is coupled to the docking port and is electrically coupled to a controller of the dishwasher through electrical conductors that extend along the manifold, thereby enabling a dishwasher controller to detect when spray devices are coupled to the manifold, e.g., to optimize a wash cycle to use a particular spray device docked to the docking port.

A dishwasher with a tub at least partially defining a treating chamber, a spraying system for spraying liquid into the treating chamber, and a recirculation system for recirculating liquid sprayed in the treating chamber to the spraying system with a variable filtration system. Method of operating includes recirculating a liquid, supplying a first portion of the liquid through the spraying system, supplying a second portion of the liquid through the filter, and varying the amount of the second portion.