WO2018228679A1 - Lave-vaisselle et procédé de fonctionnement d'un lave-vaisselle - Google Patents

Lave-vaisselle et procédé de fonctionnement d'un lave-vaisselle Download PDF

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Publication number
WO2018228679A1
WO2018228679A1 PCT/EP2017/064490 EP2017064490W WO2018228679A1 WO 2018228679 A1 WO2018228679 A1 WO 2018228679A1 EP 2017064490 W EP2017064490 W EP 2017064490W WO 2018228679 A1 WO2018228679 A1 WO 2018228679A1
Authority
WO
WIPO (PCT)
Prior art keywords
spray
dishwasher
rinse water
zones
different
Prior art date
Application number
PCT/EP2017/064490
Other languages
German (de)
English (en)
Inventor
Hansjörg Lampe
Original Assignee
Haier Deutschland GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Haier Deutschland GmbH filed Critical Haier Deutschland GmbH
Priority to PCT/EP2017/064490 priority Critical patent/WO2018228679A1/fr
Publication of WO2018228679A1 publication Critical patent/WO2018228679A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/14—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber
    • A47L15/18—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber with movably-mounted spraying devices
    • A47L15/22—Rotary spraying devices
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4278—Nozzles
    • A47L15/428—Rotary nozzles
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4278—Nozzles
    • A47L15/4282—Arrangements to change or modify spray pattern or direction
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4289—Spray-pressure measuring or regulating arrangements
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2301/00—Manual input in controlling methods of washing or rinsing machines for crockery or tableware, i.e. information entered by a user
    • A47L2301/04—Operation mode, e.g. delicate washing, economy washing, reduced time, sterilizing, water softener regenerating, odor eliminating or service
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/10—Water cloudiness or dirtiness, e.g. turbidity, foaming or level of bacteria
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/12—Water temperature
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/14—Water pressure or flow rate
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/24—Spray arms status, e.g. detection of spray arm rotation
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/04—Water pressure or flow rate
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/06—Water heaters
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/20—Spray nozzles or spray arms

Definitions

  • the invention relates to a dishwasher. Furthermore, the invention relates to a method for operating a dishwasher.
  • Dishwashers are used in particular for cleaning items to be washed, which can be subdivided in particular into dishes (plates usually made of porcelain, cups, etc.), cutlery (knives, forks, spoons etc.) and cookware (pots, pans and the like).
  • dishwashers usually comprise a substantially rectangular dishwashing chamber, which can be closed by a door.
  • the washing chamber usually designated as crockery or cutlery baskets, formed of wire mesh support for the items to be washed, which can be pulled out of the rinsing chamber for loading and unloading the thrust.
  • Dishwashing machines usually have spray devices with one or more spray units in order to apply dishwashing water to the dishwasher during (dishwasher) operation of the dishwasher, which is treated with a detergent (dishwashing detergent) at at least one cycle and is also referred to as "wash liquor" usually carry a plurality of nozzle openings through which rinsing water passed inside the respective spray unit exits outwardly and in the direction of the items to be washed frequently serve several obliquely set nozzle openings (hereinafter referred to as drive nozzles) for (hydraulic) drive the respective spray unit Operation of the dishwasher thus rotate these spray units and bring flushing water from above or below on the dishes to be cleaned.
  • a dishwasher with a motor-driven spray unit is known for example from WO 2013/132458 AI.
  • Dishwashers of this type frequently do not achieve sufficiently intensive treatment of the items to be washed - in particular if the dishwasher is used
  • Wash items are large items such as pots or large plates. Thus, in such dishwashers - especially in highly contaminated items - come to an unsatisfactory cleaning result.
  • the invention has for its object to provide an improved dishwasher.
  • the dishwasher according to the invention (hereinafter referred to briefly as a dishwasher) comprises a preferably substantially (ie approximately) cuboid rinsing chamber for receiving items to be washed, a spray device for distributing rinse water in the rinsing chamber and preferably via the in particular the dishwasher in the rinsing chamber arranged items to be washed , and a control device for controlling the spray device.
  • the spraying device furthermore has a spray holder rotatably mounted about an axis of rotation. on.
  • the dishwasher comprises an electric motor drive for rotational driving of the spray unit about the axis of rotation.
  • the control device is designed to distinguish or set at least two spray zones in which the spray unit discharges the rinse water.
  • the spray unit has at least one spray arm.
  • the spray unit is preferably arranged at the bottom of the washing chamber and thus in particular below a suitably for receiving large and often relatively heavily contaminated Spülgut matter -.
  • the electromotive drive makes it possible for each nozzle opening arranged on the spray arm to be designed for flushing the wash ware in a targeted manner and, in particular, over a large area, since nozzle openings for the hydraulic drive of the spray unit can be dispensed with.
  • the at least two spray zones are formed differently. This applies in particular within a washing program.
  • the at least two spray zones preferably remain unchanged during a wash program.
  • the control device can be designed to distinguish or set two, three, four, five, six or more spray zones.
  • the controller may be in signal communication therewith for controlling the spray device.
  • the individual control of the spray device within the respective spray zone allows individual cleaning of the wash ware for each spray zone.
  • the use of rinse water can be done by the individual cleaning in the spray zones to simple Be reduced.
  • the at least two spray zones differ by at least one flushing parameter for the treatment of the items to be washed.
  • the purging parameters may be rinse water temperatures, rinse water pressures, speeds and / or directions of rotation of the
  • the spray unit has a spray arm with nozzle openings.
  • the spray arm is arranged in particular on one side or asymmetrically to the axis of rotation.
  • the "spray unit” is preferably “one-armed.” By a “one-armed” spray unit, it is understood here and below that the spray unit is asymmetrical and, in particular, only (ie, exactly) has a spray arm projecting from the axis of rotation.
  • the spray arm is essentially radial (radial or spoke-like) to the axis of rotation.
  • substantially radial here and below means that the spray arm can also deviate slightly from a (linear) radial jet, for example by the spray arm along a radial plane
  • the spray arm preferably has the nozzle openings on a side directed toward the items to be washed during normal operation of the dishwasher to discharge the rinsing water onto the items to be washed Spray arm when rotating around the axis of rotation is used.
  • the advantage of the one-armed spray unit is that the dispensing of rinse water takes place at any time during the rinsing process in a partial area of the rinsing chamber which is unilateral with respect to the axis of rotation.
  • This subarea of the rinsing chamber can be smaller in a one-armed spray unit than in a multi-armed spray unit.
  • the spray unit can also have more than one spray arm, which are arranged in particular asymmetrically to the axis of rotation.
  • the spray unit may also have at least one support arm.
  • the support arm is understood to mean an arm protruding from the axis of rotation, which has a guide channel for guiding the flushing water from an inflow opening to an outflow opening, but does not comprise any nozzle openings for discharging the flushing water.
  • the dispensing of the rinse water can be done by means of a attached to the drain opening spray extension.
  • at least two spray zones are each defined by an angle range swept by the spray unit.
  • the spray zones can be designed in the form of a circular sector or a circular ring sector.
  • the control device can be subdivided into four, approximately quarter-circle spray zones.
  • spray level The subdivision of the plane swept by the spray unit during a full revolution about the axis of rotation (hereafter "spray level") to form the spray zones is effective and economical. Additional spray units or valves for switching the spray units can thus be avoided to form the spray zones.
  • the control device is designed to associate the at least two spray zones with one function type each (also: operating mode).
  • the function type can be used to set a number of different rinsing parameters for the treatment of the items to be washed be.
  • the purging parameters may include rinse water temperatures, rinse water pressures, speeds and / or directions of rotation of the spray unit at different times in the purging process.
  • the type of function can thus be determined, for example, for intensive or gentle cleaning of the items to be washed. At least two, in particular more than three different types of function can be preset in the control device.
  • type of operation or "operating mode” is here and below preferably a setting within a wash program, in particular understood within a program section for which certain purging parameters are set or fixed.
  • the respective mode of operation can determine the amount of flushing water to be dispensed in the respective spray zone and / or the metered addition of flushing agent to the flushing water. This setting depends expediently on the type of items to be washed and / or the degree of contamination (many and optionally dried-on food particles and the like).
  • a type of function referred to as "intensive” can serve in particular for the cleaning of highly contaminated items to be washed.
  • the application of a larger amount of flushing water is expediently deposited on the items to be washed arranged in the corresponding spraying zone than for a (second) type of function designated as "normal” , which is stored for an average contamination level of the items to be washed.
  • the third type of function is a type of function which is designated as "soft", “care” or “sensitive”, which is provided in particular for sensitive items to be washed, for example tableware made of particularly thin-walled porcelain, high-quality glass or the like
  • the controller is configured to the rinse water so deploy in the appropriate spray zone, that the dishes arranged there are not moved by the rinse water, so that they do not hit each other.
  • the spray unit is moved at a particularly high speed through this spray zone, so that there is only a small contact time between a rinse water jet and a crockery.
  • the respective rinsing program can be processed by the control device during the rinsing process.
  • a rinsing program includes a chronological sequence (preferably the duration) of different program sections (aisles or "phases") - eg a main cleaning cycle, one or more (intermediate) rinsing cycles and a drying cycle - and different ones assigned to the respective program sections
  • Operating settings such as, for example, different rotational speeds for the spray unit, are stored in the control device.
  • the user of the dishwasher can position the items to be washed in accordance with the degree of impurity in the washing chamber, in particular in the dish rack.
  • the respective spraying zones can be marked in color for easy distinction.
  • the electromotive drive is set up to drive the spray unit at a variable speed (ie at a variable rotational speed) and / or with an alternating direction of rotation.
  • variable speed is understood here and below that the respective speed of the spray unit preferably over the duration of a rinsing process, preferably in response to a Rinse program, in particular of a program section of such a wash program is specified differently.
  • the electromotive drive can drive the spray unit in each spray zone with a rotational speed assigned to the type of operation of the respective spray zone.
  • control device is set up, in particular by means of a user interface, in particular a switch panel or a touch panel, to set the number and extent of the spray zones in a user-specific manner.
  • a user interface in particular a switch panel or a touch panel.
  • the area within a rinsing chamber, which is assigned to the respective spray zone can thus be determined individually by the user.
  • the spraying zones can each be assigned a function type or a rinsing program to an input of the user.
  • This user-specific assignment can be carried out via the user interface as an alternative or in addition to a preset assignment of the functional types to the respective spray zones.
  • a basic setting with regard to the assignment of the types of function is predetermined, which the user can change before the start of the wash program, in particular as a function of the individual loading of the wash basket on the user interface.
  • a color or other type of marking the spray zones is arranged on the corresponding dish rack, so that the user expediently recognize the limits of the individual spray zones and can pay attention to when loading with items to be washed.
  • the control device is designed to control the drive for rotating the spray unit with different rotational speed and / or alternating rotational direction during operation of the dishwasher in at least one of the spray zones depending on the type of operation assigned to this spray zone.
  • the direction of rotation is changed several times, so that it is often swept by the spray unit in comparison to the other spray zones and thus
  • the spray unit oscillates back and forth several times in the intensive zone, whereas other spray zones (eg a "normal zone” or a "care zone”) are swept over less frequently or only once. This also leads to an improvement of the cleaning effect and to the saving of rinse water in spray zones with lower water requirements.
  • the dishwasher comprises a pumping device, which is expediently adapted to the rinse water with to apply a controllable rinse water pressure of varying pressure over the nozzle orifices located in the spray arm. Due to the possibility of controlling the rinsing water pressure, the amount of rinsing water discharged can advantageously be controlled, if appropriate in addition to the variation of the rotational speed and / or the direction of rotation of the spray unit, and thus saved in spray zones with low rinsing water requirement.
  • the dishwasher comprises a heating device for heating the rinsing water to a rinsing water temperature, the temperature value of which is preferably controllable over the course of a rinsing program.
  • a heating device for heating the rinsing water to a rinsing water temperature, the temperature value of which is preferably controllable over the course of a rinsing program.
  • the rinse water pressure and / or the rinse water temperature may be controlled depending on the particular spray zone in which the spray arm of the spray unit is located.
  • the pressure value for the respective type of function can be predefined on the control side (ie preferably in the control device described above).
  • a comparatively low pressure value in the control device of the dishwasher is specified (deposited) for the type of function "care", so that the dishes arranged in the corresponding spray zone ("Carezone”) are advantageously exposed to only slight mechanical forces.
  • a comparatively high (in particular the highest) pressure value is stored, so that the best possible cleaning result is achieved a rinsing program, in particular a program section, depending on a control side (ie preferably in the above-described control device) predetermined (temperature) curve for different spray zones to be determined individually.
  • a control side ie preferably in the above-described control device
  • predetermined (temperature) curve for different spray zones to be determined individually.
  • control device is set up, in particular within a program section, from a predetermined or user-specifically adjustable threshold value for the rinsing water temperature and / or the rinsing water pressure, to dispense the rinsing water by means of the spray unit only in a part of the spraying zones which is reduced compared to the total number of spray zones.
  • this threshold value-ie preferably when the rinse water has a comparatively high temperature value and / or pressure value-the rinse water is only applied in the "intensive zone.”
  • the spray unit is only operated within this "intensive zone” (or the optionally multiple as “intensive zone” selected spray zones) pivoted with constantly changing direction of rotation or the pumping device outputs the rinse water only cyclically when the (continuing circular rotating) spray unit is within the "intensive zone”.
  • the rinse water is heated continuously and - optionally distributed at varying speed of Sprüharms - on the dishes. If the threshold for the rinse water temperature and / or the rinse water pressure is exceeded, the rinse water is then applied only within the intensive zone.
  • the spray device in an advantageous embodiment has a spray extension on a free end of the spray unit (in particular its spray arm) remote from the rotation axis, which has extension nozzle openings is.
  • the spray extension may be pivotally mounted on the at least one spray arm of the spray unit.
  • the spray extension is in particular so hinged to the free end of the spray arm of the spray that the spray extension swings as an extension of the spray when the latter is in the corner of the wash chamber, and (angular) pivots back to the spray when this moved along the side walls of the washing chamber.
  • the rinsing chamber here (in particular on its side walls on the inside) on a (rail-like) guide bar for guiding the spray extension during pivoting and pivoting relative to the spray unit.
  • the spray extension of the spray unit is guided in particular during the passage of the spray unit through the corner regions by means of the guide bar so that the spray extension can swing out as a kind of extension to the spray arm.
  • the spray extension has an attachment for sliding guide on the guide bar or a rolling body -.
  • the dishwasher has, in an expedient embodiment, a sensor device with a rotation angle sensor for determining the position.
  • This rotation angle sensor is preferably arranged on a wall (side wall or bottom) of the rinsing chamber, so that the rotational position of the spray unit relative to the rinsing chamber can be determined.
  • a Hall sensor an optical sensor (eg a light barrier), an ultrasonic sensor or the like can be used as the rotation angle sensor.
  • the arrangement of the angle of rotation sensor in the rinsing chamber advantageously allows a simplified mounting of the spraying device, since in particular the electromotive drive does not have to be aligned in terms of rotational position with respect to the rinsing chamber during assembly.
  • the sensor device of the spraying device has a flushing requirement sensor system for detecting the flushing requirement.
  • the flushing need sensor system may be designed to a Spülgutart, in particular a material of a ware, a Spülgutposition, a
  • the flushing requirement sensor system can be arranged on the washware carrier and / or on the spray unit and / or on the wash chamber and / or on a wash water filter and / or on a pump sump.
  • the flushing program can have a separate program section. Determining the flushing requirement can be carried out the application of the rinse water. The detection of the flushing requirement can also be done after an initial application of the rinse water.
  • the flushing requirement sensor system comprises at least one sensor which can be designed as a temperature sensor, pressure sensor, conductivity sensor, optical sensor, in particular turbidity sensor and / or color sensor and / or image sensor, vibration sensor, acoustic sensor, in particular microphone and / or biosensor. Since the amount of heat emitted to the items to be washed correlates with the amount of items to be washed, a temperature sensor can be used, for example, for detecting the quantity of items to be washed. This can be arranged for example in the pump sump.
  • the rinse water is applied in sequence in the different spray zones. Between the application of the rinsing water in two successively sprayed spray zones the flushing requirement is detected.
  • the flushing requirement of a respective spray zone can be determined by attaching a sensor, the flushing sensor sensor, to the flushing water filter or in the pump sump.
  • this sensor is designed as a pressure sensor.
  • the height of the water column in the pump sump varies. The height of the water column in the pump sump can be detected by means of the pressure sensor.
  • a turbidity sensor may be used in the sump.
  • the dirt particles conveyed by the rinse water to the tracer water filter can be detected by means of an optical sensor.
  • the information acquired by means of the flushing sensor system can, for example, be forwarded to the user via the user interface become.
  • the user can then make the setting of the spray zones and the assignment of the respective type of function taking into account this information via the user interface.
  • the at least two spray zones can be automatically set by the control device according to the flushing demand detected by the flushing demand sensor.
  • the washing program may have a program section for determining the spraying zones on the basis of the determined washing requirement.
  • the classification of the spray zones can be made on the basis of the washware position and / or the position-dependent washware contamination and / or the washware type and / or further of the above-mentioned information that can be detected by the washware sensor.
  • the control device is designed to determine the at least two types of function on the basis of the detected flushing requirement.
  • the automatic definition of the functional types can also be carried out by means of the flushing demand sensor system.
  • the items to be washed can be treated according to quantity, type, and soiling.
  • the type of function can be selected from a number of stored in the control device types of function or be determined individually based on the information of Spül contact sensor. The definition of the type of function can thus be done individually without additional effort for the user and for each rinse.
  • the rinsing process becomes efficient as well as water and energy saving.
  • the erfmdungsdorfe method according to claim 18 is used to operate the dishwasher described above. According to the method while the spray unit is rotated to dispense the rinse water and the rinse water is discharged controlled in the at least two spray zones.
  • the rinsing chamber is subdivided into the different spraying zones in the direction of rotation of the spraying unit (that is to say in the spraying level), the subdivision being specified in particular by the user or by the factory (that is to say in particular by the program).
  • each of the spray zones is assigned one of the above-described types of functions (again user-specific or program-related).
  • the one-armed spray unit in each spray zone is driven by the speed of rotation associated with the type of operation of the respective spray zone and / or by varying the direction of rotation.
  • the rinse water is applied in different spray zones with different rinse water temperatures and / or rinse water pressures.
  • the rinsing water is in particular, within a program section, continuously heated and / or discharged with continuously increasing pressure. From a predetermined threshold value for the rinsing water temperature and / or the rinsing water pressure, the rinsing water is only applied in one number of spray zones reduced portion of spray zones.
  • the flushing water is expediently heated to a target temperature value during the corresponding program section and / or conveyed with a target pressure value.
  • the target temperature value and / or the target pressure value are predetermined in particular depending on the degree of contamination and / or the type of contamination. In the context of the invention, it is also conceivable that the target temperature value significantly - d. H. for example, 10 to 30 degrees Celsius - is above the threshold. In other words, in the latter case, the rinse water is heated even after exceeding the threshold value. The same applies to the target pressure value.
  • Fig. 1 in a schematic representation of a dishwasher with
  • FIG. 2 in a schematic sectional view II-II of FIG. 1 a
  • Washing chamber of the dishwasher with a subdivision into spray zones Fig. 3 in a detail view in detail an embodiment of a spray unit of the dishwasher with a single spray arm
  • 4 shows a detail of an embodiment for a spray unit of the dishwasher with a single spray arm and a one-armed spray extension
  • Fig. 5 in a detail view in detail an embodiment of a spray unit of the dishwasher with a single spray arm and a two-armed spray extension.
  • a dishwasher in short: dishwasher 1 is shown.
  • the dishwasher 1 comprises a housing 2, which encloses a rinsing chamber 3.
  • the dishwasher 1 comprises a plurality (here two concrete) crockery baskets 4, d. H. of crockery, cutlery, etc. - serve and the guide elements 5 drawer-like (reversible) from the washing chamber 3 for loading and unloading of
  • the dishwasher 1 also comprises a dishwashing machine door (not shown).
  • the dishwasher 1 comprises a spraying device 6, which has two, each below one of the two crockery baskets 4 arranged and about a rotation axis 7 rotatably mounted spray units 8.
  • the dishwasher 1 further comprises a control device 9.
  • the control device 9 is in signal communication with a user device.
  • Interface 10 To output information, the user interface 10 has a TFT display. To make entries by the user, the user interface 10 has a touch display. In addition, the user interface 10 has a knob and push buttons.
  • the dishwasher 1 or the spray device 6 comprises guide channels not shown in greater detail.
  • the lower spray unit 8 is designed with one arm and thus has only one spray arm 11, which is essentially radial -d. H. exactly or with slight deviation, for example. Slightly curved as shown in Fig. 3 - protrudes from the axis of rotation 7.
  • the upper spray unit 8 is designed to be rotationally symmetrical with respect to the axis of rotation 7 and has two similar spray arms 11, which likewise protrude essentially radially from the axis of rotation 7.
  • a plurality of nozzle openings are arranged on the spraying arms 11, through which the rinsing water flowing within the respective spraying arms 1 1 to the Nozzle openings 12 is passed, exiting in the direction of the dishes.
  • the arranged on the lower spray arm 1 1 nozzle openings 12 are all formed with a pointing to the (in operation in the lower rack 4) Spülgut pointing spray direction.
  • the spraying direction of these drive nozzles in this case does not point to the items to be washed but is aligned counter to a predetermined direction of rotation of the upper spraying unit 8, so that it is set in rotation upon exit of washing water by these drive nozzles.
  • the lower spray Hinge 8 on the other hand, is assigned an electromotive drive 14 (cf., FIGS. 3 to 5), by means of which the lower spray arm 11 of the spray unit 8 is set in rotation about the axis of rotation 7 during operation of the dishwasher 1.
  • the control device 9 is set up to control the electromotive drive 14 in such a way that, during operation of the dishwasher 1, the lower spray unit 8 can be operated at different rotational speeds and in an alternating direction of rotation.
  • the dishwasher 1 comprises a pumping device, not shown, which is adapted to - on a corresponding control by the control device 9 back - the rinse water with varying pressure, d. H. with varying pressure values to pump into the spray unit 8.
  • the dishwasher 1 comprises a heating device not shown in detail, which likewise heats the rinsing water to different temperature values in response to a corresponding activation by the control device 9.
  • Each of the spray zones 16-19 may be individually set by the user via the user interface as an alternative to the use of pre-set spray zones 16-19.
  • the control device 9 is set up, each of the spray zones 16 to 19 - to an input of a user of the dishwasher 1 at the user Interface 10 of the controller 9 out - assign a type of function.
  • the user can choose from three types of function, each of which specify settings for the spray device 6 (specifically the electric motor drive 14), the pump device and the heater. These settings are stored in the control device 9.
  • the spray zones 18 and 19 disposed in the backwash chamber 3 are loaded with pots and heavily soiled dishes while the spray zone 16 is loaded with delicate china and the spray zone 17 is cut in. Accordingly, the spray zones 18 and 19 (by the user ) the function type "intensive", the spray zone 16, the function type "care” and the spray zone 17, the function type "normal” assigned.
  • the control device 9 is set up to perform a method during operation of the dishwasher 1, which is stored in a stored washing program having a plurality of program sections. In a program section designated as a main cleaning operation, the control device 9 controls the electric motor drive 14 (above example).
  • the lower spray arm 1 1 is moved at a low rotational speed, that is to say slowly through the spray zones 18 and 19, to which the "intensive" type of function is assigned, wherein the pumping device applies a relatively high pressure value to the flushing water.
  • the lower spray arm 1 1 is moved at a respective higher rotational speed and the flushing water is in each case subjected to a correspondingly lower pressure value
  • the lower spray arm 1 1 can also be used in the spray zones 18 and 19 with alternating direction of rotation (ie. oscillating ", indicated by the double arrow 21) are moved to deploy more rinse water compared to the spray zones 16 and 17.
  • the purge water temperature i.e.
  • Temperature value continuously increased. From a predetermined threshold value of the rinsing water temperature, the lower spray arm 11 is moved only in the spray zone, which is assigned the "intensive" type of function - in the present example, in the spray zones 18 and 19. This can be used to prevent temperature-sensitive Washware is sprayed directly with too hot rinse water.
  • the spray device 6 comprises a sensor device 20 with a rotation angle sensor 20a for detecting the rotation angle of the lower spray arm 1 1.
  • the rotation angle sensor 20 a is in signal communication with the control device 9.
  • the sensor device 20 also has a flushing requirement sensor 20b.
  • the flushing demand sensor system 20b is in signal communication with the control device 9.
  • the flushing demand sensor system 20b is designed in the form of two optical sensors, which are arranged on a wall of the flushing chamber 3.
  • the flushing requirement is determined according to an alternative exemplary embodiment in an initial flushing program section.
  • the spray zones 16 to 19 are based on the local
  • the flushing requirement is also determined individually for each of the spray zones 16 to 19.
  • Each of the spray zones 16 to 19 is assigned one function type on the basis of the determined flushing requirement.
  • the respective type of function is selected from a list of pre-stored and stored in the control device 1 1 functional types. Both the definition of the spray zones 16 to 19 and the determination and assignment of the respective associated types of functions without an input by the user.
  • the lower spray unit 8 is formed with a single arm, a flexible assignment of the types of operation to the individual spray zones 16 to 19 is possible without rinsing water is also applied in a diametrically opposite spray zone with the same settings.
  • the spray unit 8 has a spray extension 24 with extension nozzle openings 24a at an end remote from the rotation axis 7 (referred to as a free end 22).
  • This spray extension 24 is pivotally hinged to the free end 22.
  • the spray extension 24 is spring-loaded relative to the lower spray arm 1 1, so that the spray extension 24 strives to swing out into a position aligned with the lower spray arm 1 1.
  • the spray extension 24 is guided on a guide web 26, which is arranged on the inside of the washing chamber 3. This ensures that the spray extension 24 in corner areas 28 of the washing chamber 3 (see Fig. 2), which are not swept by the lower spray arm 1 1 pivots from the latter and after the passage of the respective corner region 28 due to the system the guide web 26 pivots again.
  • the arranged in the corner regions 28 items is sprayed sufficiently with rinse water.
  • FIG. 5 in turn, another embodiment of the lower spray unit 8 is shown.
  • the spray unit 8 in this case has a two-armed spray extension 24, which also carries extension nozzle openings 24a.
  • This two-armed spray extension 30 is set in operation by appropriate alignment of part of its extension nozzle openings 24a and the outlet of rinse water (hydraulic) on the free end 22 of the lower spray arm 1 1 in rotation.
  • the two-armed spray extension 30 serves on the one hand a further increase in the amount of flushing water in the end region of the lower spray arm 1 1 and for better rinsing water distribution in the corner regions 28th

Landscapes

  • Washing And Drying Of Tableware (AREA)

Abstract

L'invention concerne un lave-vaisselle (1) comprenant une chambre de rinçage cuboïde (3) destinée à recevoir des articles à laver, ainsi qu'un dispositif de pulvérisation (6) destiné à distribuer de l'eau de rinçage dans la chambre de rinçage (3). Le dispositif de pulvérisation comprend une unité de pulvérisation (8) montée à rotation sur un axe de rotation (7). En outre, le lave-vaisselle comprend un entraînement électromoteur (14) destiné à faire tourner l'unité de pulvérisation (8) sur l'axe de rotation (7). En outre, le lave-vaisselle comprend un appareil de commande (9) destiné à commander le dispositif de pulvérisation (6), conçu pour différencier au moins deux zones de pulvérisation, dans lesquelles l'unité de pulvérisation (8) distribue l'eau de rinçage.
PCT/EP2017/064490 2017-06-14 2017-06-14 Lave-vaisselle et procédé de fonctionnement d'un lave-vaisselle WO2018228679A1 (fr)

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US11026559B2 (en) 2019-09-30 2021-06-08 Midea Group Co., Ltd. Dishwasher with image-based fluid condition sensing
US11185209B2 (en) 2019-11-20 2021-11-30 Midea Group Co., Ltd. Dishwasher steam generator
US11191416B2 (en) 2019-09-30 2021-12-07 Midea Group Co., Ltd. Dishwasher with image-based position sensor
US11202550B2 (en) 2019-11-20 2021-12-21 Midea Group Co., Ltd. Dishwasher thermal imaging system
DE102020207536A1 (de) 2020-06-18 2021-12-23 BSH Hausgeräte GmbH System mit einer Geschirrspülmaschine und Verfahren zum Betreiben einer Geschirrspülmaschine
US11259681B2 (en) 2019-09-30 2022-03-01 Midea Group Co., Ltd Dishwasher with image-based diagnostics
EP3970593A1 (fr) * 2020-09-21 2022-03-23 Vestel Elektronik Sanayi ve Ticaret A.S. Ensemble bras gicleur pour lave-vaisselle
WO2022157063A1 (fr) * 2021-01-25 2022-07-28 BSH Hausgeräte GmbH Lave-vaisselle domestique
US11399690B2 (en) 2019-09-30 2022-08-02 Midea Group Co., Ltd. Dishwasher with cam-based position sensor
US11464389B2 (en) 2019-09-30 2022-10-11 Midea Group Co., Ltd. Dishwasher with image-based detergent sensing
US11484183B2 (en) 2019-09-30 2022-11-01 Midea Group Co., Ltd. Dishwasher with image-based object sensing
WO2022258337A1 (fr) * 2021-06-11 2022-12-15 BSH Hausgeräte GmbH Lave-vaisselle ménager et procédé

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US11399690B2 (en) 2019-09-30 2022-08-02 Midea Group Co., Ltd. Dishwasher with cam-based position sensor
US11191416B2 (en) 2019-09-30 2021-12-07 Midea Group Co., Ltd. Dishwasher with image-based position sensor
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US11259681B2 (en) 2019-09-30 2022-03-01 Midea Group Co., Ltd Dishwasher with image-based diagnostics
US11889966B2 (en) 2019-09-30 2024-02-06 Midea Group Co., Ltd. Dishwasher with image-based object sensing
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US11484183B2 (en) 2019-09-30 2022-11-01 Midea Group Co., Ltd. Dishwasher with image-based object sensing
US11185209B2 (en) 2019-11-20 2021-11-30 Midea Group Co., Ltd. Dishwasher steam generator
US11202550B2 (en) 2019-11-20 2021-12-21 Midea Group Co., Ltd. Dishwasher thermal imaging system
US11864705B2 (en) 2019-11-20 2024-01-09 Midea Group Co., Ltd. Dishwasher thermal imaging system
DE102020207536A1 (de) 2020-06-18 2021-12-23 BSH Hausgeräte GmbH System mit einer Geschirrspülmaschine und Verfahren zum Betreiben einer Geschirrspülmaschine
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EP3970593A1 (fr) * 2020-09-21 2022-03-23 Vestel Elektronik Sanayi ve Ticaret A.S. Ensemble bras gicleur pour lave-vaisselle
WO2022157063A1 (fr) * 2021-01-25 2022-07-28 BSH Hausgeräte GmbH Lave-vaisselle domestique
WO2022258337A1 (fr) * 2021-06-11 2022-12-15 BSH Hausgeräte GmbH Lave-vaisselle ménager et procédé

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