A cover (1) for centrifugal pump comprising a heating element (8) which has a heating stretch (10) and two end stretches (12) connected to the heating stretch (10), in which the heating element (8) crosses the cover (1) so that the heating stretch (10) is below the cover (1) and the two end stretches (12) are above the cover (1), and wherein at least one first portion (14) of the heating stretch (10) is in contact with the cover (1), and wherein at least one second portion (16) of the heating stretch (10) is spaced apart from the inner face (4).

A dishwasher is proposed. The dishwasher includes a cabinet defining an appearance, and opened at a side thereof; a door configured to open or close an open front of the cabinet; a tub disposed in the cabinet, and defining a space in which dishes are washed; a dispenser disposed on a side of the door, and supplying detergent into the tub; and a spray arm having a plurality of spray nozzles in which spray holes opened in different directions are formed to spray wash water, a height of the spray arm being adjusted in at least two stages, wherein the plurality of spray nozzles comprises at least two dispenser spray nozzles to spray the wash water into the dispenser according to the adjusted height of the spray arm.

A water pretreatment system connected to a water supply pipe for supplying water that has been preheated to a home appliance, including: a mixing valve having an inlet connected to the water supply pipe, and a pair of outlets; a water filter having an inlet communicated with one of the pair of outlets of the mixing valve, and having an outlet communicated with the home appliance; a bypass line having an inlet end connected to the other of the pair of outlets of the mixing valve, and having an outlet end connected to the home appliance, the mixing valve being configured to at least one of direct water to the water filter or direct water to the bypass line; and a controller configured to control the mixing valve such that preheated water supplied to the home appliance is one of unfiltered, mixed, or fully filtered by the water filter.

Disclosed is a control method of a dishwasher (100) including a tub (2) for receiving objects to be washed, a plurality of spray arms (711, 713, 715) for spraying wash water to the objects, and a steam nozzle (42) for spraying steam to the objects, the control method including a main washing cycle of washing the objects, a rinsing cycle of rinsing the washed objects using wash water, and a drying cycle of drying the objects after the rinsing is completed, wherein the drying cycle includes spraying steam, received from a steam source, to the objects to increase a temperature of the objects (a steam spraying step) and resupplying water to the steam source in order to prevent the steam source from being heated after the steam spraying step (a cooling step).

Disclosed is a washing pump for spraying washing water or steam to wash dishes or cooking appliances, and a dishwasher including the same. The washing pump according to the present invention includes: a housing; a partition wall which is vertically divides an inner space of the housing; an impeller which is rotatably disposed over the partition wall in the housing to cause washing water to flow; a heater which is disposed under the partition wall to heat the washing water in the housing so as to generate steam; and a steam discharge pipe which is disposed over the partition wall to discharge the steam, generated by the heater, to an outside of the housing. Accordingly, steam may be generated by the heater and discharged.

A dishwashing appliance includes a first water storage tank, a second water storage tank, and a heat pipe heat exchanger comprising a condenser section and an evaporator section. The evaporator section is in operative communication with the first water storage tank and the condenser section is in operative communication with the second water storage tank.

A drying system includes a tub defining a wet chamber, a water storage chamber, an inlet defined in the tub and providing fluid communication into the wet chamber and a heat pipe heat exchanger. The heat pipe heat exchanger includes a condenser section and an evaporator section. The condenser section is in operative communication with the inlet upstream of the wet chamber and the evaporator section is in operative communication with the water storage chamber.

A dishwasher having a tub at least partially defining a treating chamber, a liquid spray system, a liquid recirculation system fluidly coupling the treating chamber to the spray system to recirculate wash liquid from the treating chamber to the spray system, and filters capable of removing particles from the wash liquid. The filters include a microfilter fluidly coupled to at least one of the recirculation system and the spray system and an ultrafilter fluidly coupled to an outlet side of the microfilter.

A conveyor dishwasher (1) for washing washware has at least one final rinse zone (30, 40) and at least one washing zone (10, 20) whichas seen in the conveying direction (T) of the washwareis arranged upstream of the at least one final rinse zone (30, 40). A sensor device (5) is provided for detecting at least one parameter which characterizes the quality of the liquid which is to be sprayed in the at least one washing zone (10, 20), wherein the conveyor dishwasher (1) has a liquid transfer system which is designed, for the purpose of regenerating the washing liquid which is to be sprayed in the at least one washing zone (10, 20), to preferably as required supply an in particular definable quantity of fresh water to the at least one washing zone (10, 20).

A diverter valve assembly, a dishwasher, and a household appliance are disclosed. The diverter valve assembly has a housing and a diverter valve. A water diversion chamber is formed in the housing. The housing is provided with a water inlet, a water return port, a first water outlet, and a second water outlet. The diverter valve partitions the water diversion chamber into a first chamber and a second chamber. The first chamber is communicated with the water inlet. The diverter valve is rotatable in the water diversion chamber to selectively communicate the first chamber with the water inlet and the first water outlet and communicate the second chamber with the second water outlet and the water return port, or block the water inlet from the first water outlet and communicate the first chamber with the water inlet and the second water outlet.