Abstract: A dishwasher for treating dishes according to a cycle of operation, the dishwasher comprising a tub at least partially defining a treating chamber having an open face for receiving dishes a door assembly movable between opened and closed positions the door assembly comprising a door panel, a pocket handle defining a pocket width and proximate the top of the door panel for selectively opening and closing the open face of the tub, and a console coupled to the top of the door panel and comprising an isogrid structure at a location proximate the pocket handle.

Abstract: The present invention discloses a rotary cup washing device, comprising a flushing nozzle, a rotary impeller, a swirl outflow member, a fixed head and a water inlet pipe. The flushing nozzle, the rotary impeller, and the swirl outflow member are all provided in the fixed head. The flushing nozzle is connected to an upper part of the rotary impeller, and a lower part of the rotary impeller is correspondingly matched with the swirl outflow member, the flushing nozzle and the rotary impeller are capable for rotating relative to the fixed head under a water discharge action of the swirl outflow member. A lower part of the fixed head is connected to the water inlet pipe, and the water inlet pipe is connected to a pressure source. The present invention is capable of rotating the water to wash the cup in an omnibearing and uniform manner, and the cleaning effect is better.

Abstract: The present disclosure relates to a dishwasher. The dishwasher of the present disclosure includes a tub forming a washing chamber washing a washing target, a first circulation duct in which an air discharged from the tub flows, an outside air inflow duct in which an air from the outside flows, a fan assembly discharging the air thereto, passes through the first circulation duct and the outside air inflow duct, a second circulation duct heating and supplying a part of the air discharged from the fan assembly to the tub, an exhaust duct discharging a remaining part of the air discharged from the fan assembly to the outside.

Abstract: One embodiment provides a rinse basin and blower system configured to clean a pipette including: a rinse basin comprising: a hollow tube enclosed at one end; wherein the hollow tube comprises an upper port and a lower port; and the lower port being tapered toward the hollow tube; and wherein the rinse basin is connected to a blower system; the blower system comprising: a waste reservoir that receives, from the rinse basin, a waste product comprising: air and liquid, wherein the waste reservoir separates the liquid from the air; a dryer that receives the air from the waste reservoir and further separates any remaining liquid from the air; and a blower that receives the air from the dryer and exhausts the air.

Abstract: 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.

Abstract: An ultrasonic cleaner according to the present invention includes a vibrating part 222 for enlarging ultrasonic vibration of a bolt-clamped Langevin type transducer (BLT) 100 on a side surface side in a cleaning tank 211, generates cavitation by the ultrasonic vibration with respect to cleaning liquid supplied into the cleaning tank 211 by driving the BLT 100 on the periphery of a nozzle without unevenness, and is capable of performing effective nozzle cleaning.

Abstract: A system for cleaning agricultural bins including a conveyer belt assembly and a water jet assembly is disclosed herein. The conveyer belt includes bin rollers configured to automatically transport bins mounted thereon. The bin rollers roll bins along the conveyer assembly to the flat surface of the second end of the first section and then the bins are transferred to the cleaner section via the grapple mechanism and the pivot point to the cleaner section arranged below the bin rollers within the first section. The water jet sprays then thoroughly clean the interior and exterior of the bins. The system for cleaning agricultural bins allows a user to clean an agricultural bin in less than one minute. Furthermore, the amount of time using a water hose is reduced thereby saving money and conserving water for a user.

Abstract: A drain line cleaning system including a housing, a pump carried by the housing, a line cleaning agent carrying tube in communication with the pump, a controller in communication with the pump, and a power supply carried by the housing and connected to the pump and the controller. The line cleaning agent carrying tube includes an intake that is connectable to a reservoir that carries line cleaning agent and an output that is connectable to a drain line. The controller controls the pump to function to withdraw the line cleaning agent from the reservoir and causes the line cleaning agent to be expelled through the output.

Abstract: A method and device for wet processing and integrated circuit (IC) substrates using a fresh mixture of chemical steam vapors and chemical gases may include loading the substrates into an enclosed process chamber with a 90° rotatable middle section; closing the process chamber; conditioning the process chamber with preset temperature nitrogen gas; injecting a fresh mixture of chemical gas and chemical steam into the processing chamber sequentially to condense wet process fresh chemicals on site; circulating the mixture of chemical steam vapors or liquid chemicals and rotating at least one magnetic rod within the processing chamber to treat the substrates uniformly; performing a deionized water rinse of the substrates and turning on the adjustable multi-modulated megasonic energy when necessary; injecting solvent isopropyl alcohol steam vapor into the processing chamber for the Marangoni drying; completely drying the substrates and the processing chamber with hot nitrogen gas; and unloading the treated substrat

Abstract: A splashless sink assembly includes a bottom, an open top located above the bottom, a first side wall extending upwardly from the bottom to the open top at an angle oblique relative to the bottom, and a second side wall disposed opposite the first side wall. The second side wall extends upwardly from the bottom to the open top at an angle oblique relative to the bottom.

Abstract: Disclosed are a cleaning solution mixing system, a tool and a method of operation thereof, including an ultrapure water source for providing ultrapure water; an ammonia filter for filtering ammonia in gas form; a hydrogen peroxide filter for filtering hydrogen peroxide in gas form; an ammonia re-gas membrane for dissolving the ammonia in the ultrapure water and forming ultra-dilute ammoniated water; a hydrogen peroxide re-gas membrane for dissolving the hydrogen peroxide in the ultrapure water and forming ultra-dilute hydrogenated water; and a mixer for forming an ultra-dilute cleaning solution by mixing the ultra-dilute ammoniated water and the ultra-dilute hydrogenated water.

Abstract: Dishwashing machine including an outer casing with an inner washing cavity adapted to accommodating a dishwasher rack. A catchment sink assembly is located on the bottom of the inner washing cavity to collect and accumulate liquid trickling down from the dishwasher rack momentarily located above the catchment sink assembly. The catchment sink assembly includes a basin-shaped catchment tank. A cup-shaped drain sump extends downwards from the bottom of the catchment tank and directly communicates with the inside of the catchment tank to receive washing or rinsing liquid arriving on the bottom of the catchment tank. A tubular member communicates with the catchment tank and is detachably fitted into a corresponding tubular outlet portion in the drain sump to divide the inner volume of the drain sump into a first inner-volume portion directly connected to a water drain line, and a second inner-volume portion directly connected to the suction of the pump.

Abstract: Mobile apparatuses move within contaminated fluid to create fluid flows against structures that remove and prevent contaminant deposition on structure surfaces immersed in the fluid. Unsettling flows in water may exceed approximately 2 m/s for radionuclide particles and solutes found in nuclear power plants. Mobile apparatuses include pressurized liquid from a pump or pressurized source that can be chemically and thermally treated to maximize deposition removal. When spraying the pressurized liquid to create the deposition-removing flow, mobile apparatuses may be self-propelled within the fluid about an entire surface to be cleaned. Mobile apparatuses include filters keyed to remove the contaminants moved into the coolant by the flow, and by taking in ambient fluid, enable such filtering of the ambient fluid along with a larger flow volume and propulsion. Propulsion and the pressurized liquid in turn enhance intake of ambient fluid.

Abstract: One embodiment includes a method for monitoring a CIP process previously performed. The method includes accessing CIP process data stored in a CIP library. The CIP process data includes CIP phase data associated with a plurality of CIP phases in the CIP process previously performed, equipment data associated with objects used in the CIP process during one or more of the CIP phases, and consumable data associated with consumables consumed by corresponding equipment in the CIP process. In addition, the method includes displaying at least a portion of the CIP process data, and providing a graphical user interface. The graphical user interface is configured to: organize the CIP process data into at least one of (i) a plurality of CIP phases or (ii) consumable data, and sort equipment data according to one or more of the plurality of corresponding CIP phases or corresponding consumables.

Abstract: A concrete mixing apparatus includes: a rotatable mixing drum; an internal combustion engine including an exhaust system for discharging exhaust gas containing carbon dioxide; a diverter pipe connected in fluid communication with the exhaust system and the mixing drum; and means for cooling the exhaust gas upstream of the mixing drum.

Abstract: A mobile device for discharging a liquid-filled container is disclosed. The device has a closable compartment provided with a closable opening, and an unloading installation in the inner space of the device, coupleable with the container. The unloading installation is able to extract liquid from the container via top unloading and to move it outside of the device, and includes an absorption means for removing liquid vapors which is connectable with the container for the extraction of top liquid vapors. A method for discharging liquid containers, such as unloading benzyl chloride liquid with the mobile device, is described.

Abstract: A device system for military and/or humanitarian operations, in particular a mobile decontamination system, comprises a plurality of power-operated units, accessory parts and operating supplies, which together determine a functional scope of the device system. The power-operated units, accessory parts and operating supplies are mounted on a base plate by means of a retaining structure, said base plate having a defined placement surface and anchoring elements. The anchoring elements enable detachable anchoring of the base plate together with the retaining structure to a transport means, in particular to a transport vehicle. The retaining structure is formed from a plurality of self-supporting, structurally identical, cuboid-shaped frames, which are arranged next to each other and/or on top of each other and are fastened to the base plate. The frames each have eight corner pieces and twelve edge profile elements, which together enclose a defined storage volume.

Abstract: A humidity reducing vent for a washing appliance such as a dishwasher or washing machine employs a jet pumping action allowing a single electric blower to move and mix humid air exhausted from the washing appliance washing chamber and external dry air streams together prior to discharge so as to reduce condensation outside of the washing appliance.

Abstract: A method of drying dishes in a dishwasher having a condensation system for extracting liquid from air within a treating chamber of the dishwasher to control the dry cycle of the dishes in the treating chamber.

Abstract: A pump for a dishwasher is configured as an impeller pump having a central water inflow to a rotating impeller for conveying the water in the radial direction out of the impeller into a pump chamber which surrounds the impeller in a ring-like manner and has a heated pump chamber wall on its outer side. Here, the pump has an outlet in the end region of the pump chamber at an axial spacing from the impeller. Heating elements which have a decreasing power output with regard to the area power output in the axial direction of the pump toward the outlet are arranged on the pump chamber wall. An input of energy into the pump chamber can thus be varied and in the process adapted depending on a turbulent or laminar flow.

Abstract: A system and process for mixing and distributing building materials. This system and process can also include a way or a means for calibrating the mixing of these materials. This system and process can also include a system for tracking the materials that flow through the system, and for controlling the type of material used in the system.

Abstract: A valve control unit includes a data reading/selecting unit, which reads each of signals transmitted onto a serial bus, and selects a flow rate data signal from among the read signals. Therefore, the valve control unit can acquire the flow rate data signal from the serial bus without allowing the flow rate data signal to pass via the master IC. As a result, it is made possible to ensure real time properties of feedback control, which adjusts a needle valve based on a measurement result of a flowmeter, while reducing a load applied to a CPU that controls the master IC. Moreover, it is not necessary to provide an additional instrument for transferring analog signals between slave devices, and accordingly, a size increase and cost increase of an apparatus can be suppressed.

Abstract: A system and method for pipe cleaning are disclosed, which include arranging at least one pump to draw a flow of water from the body of water. An output of the at least one pump is fluidly connected to the pipe through a junction disposed between the one end of the pipe and the free end of the pipe, and the at least one pump is activated to draw the flow of water and provide the flow of water to the pipe through the junction such that a flow of water passes through the pipe to remove the debris. The debris is thus entrained in the flow of water and ejected from the pipe through the free end into the body of water until the pipe is clean.

Abstract: A dishwasher for treating dishes includes a tub at least partially defining a treating chamber, a spraying system having a distribution header and at least one aperture provided on the distribution header for spraying wash liquid into the treating chamber, and a recirculation system for recirculating liquid sprayed in the treating chamber to the spraying system. A light assembly is provided on the distribution header, and includes a light source that emits light to a light guide, which in turn distributes light to the treating chamber.

Abstract: A wind turbine blade (162) and a method of forming a wind turbine blade. The method includes: forming an inner segment (10) of an airfoil, leaving a portion (16) of an inner weave (12) extending from the inner segment; forming an outer segment (18) of the airfoil, leaving a portion (24) of an outer weave (20) extending from the outer segment; overlapping the extending portion of the inner weave with the extending portion of the outer weave; infusing the overlapped extending portions with additional resin; and curing the additional resin to form a monolithic airfoil (160).

Abstract: There is provided a sump of a dishwasher having a plurality of nozzles for spraying washing water. The sump includes a sump case for storing the washing water, a sump cover covering the sump case, a self-cleaning filter installed on the sump cover to filter foreign objects contained in the washing water stored in the sump case, a washing pump for pumping out the washing water stored in the sump case, a pump lower receiving the washing pump and providing a soil chamber in which the foreign objects contained in the washing water are accumulated, a washing motor installed on the sump case to drive the washing pump, a drain pump installed on the sump case to drain the washing water, and a drain motor for driving the drain pump.

Abstract: A dishwasher (2) is provided comprising a washing chamber (8) with a sump (14) and a circulation circuit (16). The circulation circuit (16) comprises the sump (14), a circulation pump (18) and a spraying device (20) for spraying washing liquid into the washing chamber (8). The dishwasher (2) further comprises a reservoir (24) adapted to be connected to water mains, wherein a liquid connection (30) is adapted to transfer liquid from the reservoir (24) to the washing chamber (8). A return system (32) is adapted to transfer liquid from the washing chamber (8) to the reservoir (24). The reservoir (24) is thermally insulated from the washing chamber (8).

Abstract: A dewaxing device and a method of recycling chemical solvent used by the dewaxing device are shown. The dewaxing device includes a dewaxing system and a recycling system. The dewaxing system includes a rinsing device and a storage device connected with the rinsing device via a circulation pipe. The recycling system includes a cooling equipment connected with the storage device for cooling mixed solution with wax from the storage device to precipitate wax out of the mixed solution, a filter equipment connected with the cooling equipment for filtering out the precipitated wax, and a recycling trough connected between the filter equipment and the storage device for containing the filtered solution passing through the filter equipment and further conveying the filtered solution back into the storage device to be reused.

Abstract: A dishwasher for treating dishes according to at least one cycle of operation including a tub at least partially defining a treating chamber for receiving the dishes, at least one sprayer, a liquid recirculation system, a liquid filtering system including a housing defining and a filter located within the interior and a heater configured to heat liquid that has passed through the inlet opening of the housing.

Abstract: A treatment liquid supply apparatus supplies a treatment liquid to a predetermined object for treatment of a substrate, and recovers the supplied treatment liquid for reuse. The apparatus includes: a first tank in which the treatment liquid to be supplied to the object is stored; a second tank in which the treatment liquid recovered from the object is stored; a transfer unit which transfers the treatment liquid from the second tank to the first tank; a first temperature regulating unit which regulates the temperature of the treatment liquid to be supplied from the first tank to the object; and a second temperature regulating unit which regulates the temperature of the treatment liquid to be transferred from the second tank to the first tank by the transfer unit.

Abstract: A system and method is shown for coating an article, including a chamber that can be at least partially open to surrounding air to allow free flow of air through the chamber and recovery of vapor produced during a coating operation within the chamber. The chamber can include a support surface that is adapted to support the article during a coating process, and a coating device within the chamber can be adapted to selectively apply a coating of a fluorocarbon in a fluorinated solvent to at least a portion of an article supported on the support surface.

Abstract: In the dishwasher and the control method therefor of the present invention, the turbidity of washing water is measured and, if it is decided that the level of dirtiness of the tableware is low, then the time over which a heater operates during the washing routine is reduced and, instead, the time over which the heater operates during the rinsing routine is increased. This is advantageous in that it can improve the performance of the drying which is carried out after the rinsing routine. Further, if it is decided that the level of dirtiness of the tableware is high, then the time over which the heater operates during the washing routine is increased and the time over which the heater operates during the rinsing routine is reduced. This is advantageous in that the washing performance can be improved while the overall heater operating time can be maintained.

Abstract: Disclosed is a portable and self-contained washing and sanitizing apparatus. The apparatus finds particular application in washing small baby items such as bottles, nipples, teething rings or toys. The apparatus includes a container with a lid, the container housing the items to be washed; an accessory holder connected to the lid for holding infant accessories during washing operations; a water reservoir for storing and collecting wash water; and a housing for interconnecting the container and reservoir.

Abstract: Disclosed are a substrate processing apparatus, a substrate processing method and a storage medium, capable of removing contaminant materials from a substrate by using SPM liquid (sulfuric acid and hydrogen peroxide mixture) while preventing degradation of the function of the SPM liquid for removing the contaminant materials. The SPM liquid is filled in a processing bath and the substrate is immersed in the SPM liquid. A heating unit is provided in the circulation path to heat the SPM liquid. A hydrogen peroxide supply line supplements hydrogen peroxide to the SPM liquid in the circulation path. A control unit adjusts the temperature of the SPM liquid to the predetermined temperature in the range of 135° C. to 170° C. based on a temperature detection value and outputs a control signal to supplement the sulfuric acid to compensate for the SPM liquid as the SPM liquid is evaporated by heating.

Abstract: A dishwashing appliance is provided that has a heating element shaped to allow a user to access a filter while avoiding contact with the heating element. The heating element is spaced apart from the filter and shaped or positioned relative to the filter such that a user may access the filter for cleaning or replacement while avoiding contact with the heating element. In one embodiment, the heating element extends in the wash chamber along the lateral direction but without crossing the centerline of the wash chamber in front of the filter.

Abstract: Provided is a cleaning system including an electrolysis unit that electrolyses a sulphuric acid solution, thereby generating persulphuric acid, an electrolytic solution storage unit that stores the electrolyzed sulphuric acid solution, a first circulation line that circulates the sulphuric acid solution between the electrolysis unit and the electrolytic solution storage unit, a cleaning device that cleans a material subject to cleaning by using the sulphuric acid solution containing the persulphuric acid, a heating unit that heats the sulphuric acid solution used for the cleaning device, a waste liquid storage unit that stores the sulphuric acid solution used by the cleaning device, a second circulation line that transports the sulphuric acid solution electrolyzed by the electrolysis unit via the heating unit to the cleaning device, and circulates the sulphuric acid solution used by the cleaning device for the cleaning via the waste liquid storage unit, and a third circulation line that transports the sulphur

Abstract: A support removal apparatus is disclosed for removing water-soluble support material from rapid prototype parts, substantially comprising a retention tank for holding an aqueous cleaning solution; a box manifold hydraulically coupled to the retention tank and equipped with nozzle heads in hydraulic communication with a pump's discharge; a heat chamber for housing a heating element to heat the aqueous cleaning solution to a predetermined temperature range; a drain box hydraulically coupled to the retention tank and a pump's intake to convey the aqueous cleaning solution into and through the box manifold; a thermocouple for maintaining the temperature within an optimal range; a level indicator for measuring the solution level in the retention tank for safe operability of the pump and heating element; a cabinet for housing select components of the support removal apparatus and having an integral work platform, accessible compartments, and a localized water supply; and a microprocessor having communicative capabi

Abstract: An assembly for recycling a solvent from a contaminated solvent solution includes a recycler module including a distillation assembly and an air handler assembly. The distillation assembly includes a distiller and a conduit that includes a condenser and a sight glass. The air handler assembly includes a duct having an intake port, an exhaust port and a source of air flow. The condenser is disposed within the duct and the sight glass is disposed external to the duct.

Abstract: Systems, apparatus and methods are provided for efficiently reclaiming solvents used to clean surfaces of semiconductor wafers, etc. More particularly, embodiments of the present invention provide a reclaim approach that prevents the evaporation of chemical solvents used to process wafers using proximity heads, by confining hot liquid solvents used to form fluid menisci on the wafer surface with cold liquid solvents of the same chemical composition.

Abstract: A vaporized material supply apparatus includes: a storage tank for storing a liquid material; a first temperature controller for controlling the storage tank to be at a first temperature; a carrier gas inlet line for introducing a carrier gas into the storage tank; a processing gas outlet line for discharging a processing gas out of the storage tank; a container having an inlet port connecting to the processing gas outlet line and an outlet port via which the processing gas is discharged; an interference member to interfere with flow of the processing gas in the container; and a second temperature controller for controlling the container to be at a second temperature lower than the first temperature.

Abstract: Provided is a substrate treating apparatus. The substrate treating apparatus according to embodiments of the present invention may include a cleaning chamber cleaning foreign objects on a substrate, and a recycling unit recycling by recovering a mixed solution including a first chemical and a second chemical used in cleaning of the substrate, wherein the recycling unit includes a separation unit separating the mixed solution recovered from the cleaning chamber, a recovery line connecting the separation unit and the cleaning chamber and allowing the mixed solution to flow into the separation unit, a decompression line having one end connected to the separation unit and exhausting the mixed solution evaporated from the separation unit, and a decompression unit installed in the decompression line and reducing pressure in the separation unit.

Abstract: Provided is a dish washer. The dish washer includes a tub configured to accommodate dishes, a sump configured to supply water to the tub, and a water supply device configured to supply water received from an outer source to the sump or the tub. The water supply device includes a body and a plurality of discharge parts. The body includes a water supply passage along which water supplied from an outer source flows and a water chamber in which water supplied through the water supply passage is stored. Water is discharged from the water supply passage to the water chamber through the discharge parts.

Abstract: Disclosed are a liquid processing apparatus and a liquid processing method. The liquid processing apparatus includes an ejection port ejecting a first liquid to a wafer, a first liquid supply mechanism supplying sulphuric acid to the ejection port, and a second liquid supply mechanism supplying hydrogen peroxide solution to the ejection port. The first liquid supply mechanism includes a first temperature adjustment mechanism maintaining the first liquid heated to a first temperature, a second temperature adjustment mechanism connected to the first temperature adjustment mechanism, and an ejection line connecting the second temperature adjustment mechanism with the ejection port. The second temperature adjustment mechanism includes a second circulation line and a second heater. The ejection line connects the second circulation line through a switching valve at a location further downstream than the second heater.

Abstract: Inventive methods and systems of cleaning patterned integrated circuit (“IC”) substrates are described. The cleaning methods of the present invention include: (1) providing the patterned integrated circuit substrate having thereon poly silicon lines adjacent to each other; (2) charging a solution, which contains at least a solute selected to promote cleaning of the patterned integrated circuit substrate, to produce a charged solution, wherein at least a portion of the solute is present as clusters in the charged solution; and (3) conveying the charged solution for cleaning the patterned integrated circuit substrate.

Abstract: A cleaning appliance is provided for cleaning washware, which cleaning appliance is designed to subject the washware to the action of at least one cleaning fluid in at least one cleaning chamber. The cleaning appliance has a suction-removal apparatus for removing damp air from the cleaning chamber by suction, and at least one heat recovery device. The heat recovery device is designed to draw heat from the damp air and to feed it back to the cleaning appliance by means of a first cooling fluid. The cleaning appliance has a cooling-fluid line with at least one recirculation path and at least one heat accumulator path with at least one latent heat accumulator. The cleaning appliance is designed to conduct the first cooling fluid to the cleaning chamber and/or into a fluid tank via the recirculation path in at least one operating state after said cooling fluid has flowed through the heat recovery device.

Abstract: The present invention relates to a dish washing machine, and more particularly to a dish washing machine having a structure in which a bottom surface of the dish washing machine is not wet with water. The dish washing machine includes a washing chamber (150) for washing dishes, a fan (90) for discharging air from the washing chamber (150), a housing for a space to install the fan (90), an exhaust duct (92) for guiding the air from the housing (94) to an outside of the dish washing machine, and a passage for draining water to an outside of the housing (94) whenever the water is present in the housing (94).

Abstract: A method for cleaning cavities in workpieces, a cleaning device for this purpose and a device for the supply of media to a cleaning device of this type. Supercritical carbon dioxide is introduced into the cavity and the cavity is rinsed. The supercritical carbon dioxide located in the cavity is relieved of pressure after rinsing of the cavity, so that carbon dioxide gas and carbon dioxide snow are formed in the cavity and subsequently driven out of the cavity.

Abstract: A pump, particularly for dishwashers, is provided and includes a housing made of a housing bottom, a housing cover, and a heating device disposed in between the bottom and cover for heating a washing fluid. The heating device forms a ring-shaped side wall of the housing. An impeller is arranged in the housing, an intake connection is arranged axially in the housing cover relative to the axis of rotation of the impeller, and a pressure connection is arranged in the housing cover.

Abstract: A heat recovery device is provided for recovering thermal energy from a fluid medium, in particular for use in a waste-water system of a dishwasher. The heat recovery device comprises at least one heat exchanger with at least one heat exchanger surface. The heat recovery device further comprises at least one heating device, which is thermally coupled to the heat exchanger surface, and also at least one controller. The controller is designed to carry out a self-cleaning process for the heat exchanger, with the heat exchanger surface being briefly heated by means of the heating device during the self-cleaning process.

Abstract: A dishwasher includes a reservoir for storing washing fluid, and a control device configured for calling up at least one dishwashing program for controlling a washing cycle for washing items to be washed in a washing chamber and at least one preheating program for controlling a preheating cycle for preheating washing fluid for a washing cycle separately from each other. The preheating cycle includes a heating phase during which washing fluid is circulated and the circulated washing fluid is heated. The preheating cycle has downstream of the heating phase a pumping phase during which previously circulated and heated washing fluid is pumped into the reservoir.