EP3777639B1 - Appareil électroménager à circulation d'eau et procédé de fonctionnement d'un appareil électroménager à circulation d'eau - Google Patents

Appareil électroménager à circulation d'eau et procédé de fonctionnement d'un appareil électroménager à circulation d'eau Download PDF

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Publication number
EP3777639B1
EP3777639B1 EP20185738.0A EP20185738A EP3777639B1 EP 3777639 B1 EP3777639 B1 EP 3777639B1 EP 20185738 A EP20185738 A EP 20185738A EP 3777639 B1 EP3777639 B1 EP 3777639B1
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EP
European Patent Office
Prior art keywords
nozzle
water
nozzle body
domestic appliance
dishes
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
EP20185738.0A
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German (de)
English (en)
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EP3777639A1 (fr
Inventor
Benedict Moch
Uwe Schaumann
Wolfgang Thimm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EGO Elektro Geratebau GmbH
Original Assignee
EGO Elektro Geratebau GmbH
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Publication of EP3777639A1 publication Critical patent/EP3777639A1/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
    • A47L15/42—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
    • A47L15/0086—In-sink dishwashers
    • 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
    • A47L2401/04—Crockery or tableware details, e.g. material, quantity, condition
    • 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
    • A47L2401/30—Variation of electrical, magnetical or optical quantities
    • 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 water-carrying domestic appliance with a washing chamber and with a nozzle body with a nozzle opening for dispensing fluid or water, ie advantageously with a nozzle. Furthermore, the invention relates to a method for operating such a water-bearing domestic appliance, in particular a dishwasher.
  • Dishwashers as water-bearing domestic appliances, usually have one or more rinsing arms or nozzle arms, which rotate about a vertical axis at different levels in the rinsing chamber, see FIG WO 2004/058038 A1 .
  • Water that is introduced under pressure exits through several nozzle openings on the arms and is sprayed into the washing chamber through the arms in varying ways. Because of the recoil at the jets, the arms are set in rotation.
  • the JP 2003304980A is a water-bearing household appliance known with a nozzle device in a side wall, for example as a dishwasher.
  • the nozzle device has a nozzle body which is movably arranged in a nozzle holder and is connected to a deformable nozzle disk with nozzle openings.
  • the nozzle body moves as a result of the inflowing water and thus changes the shape and/or alignment of the nozzle disk with the nozzle openings, so that the exiting water is sprayed in randomly varying directions.
  • a dishwasher for integration into a sink in which water can be injected upwards into the sink from below from an outlet by means of a nozzle device. This allows variable cleaning of dishes or objects.
  • a yet another dishwashing machine having nozzle openings along elongate rods or brackets which are rotatable about their longitudinal axis. These nozzle openings thus allow water to be sprayed into the dishwasher in a variable manner.
  • the invention is based on the object of creating a water-bearing household appliance as mentioned at the outset and a method mentioned at the outset with which problems of the prior art can be solved and in particular it is possible to construct a water-bearing household appliance in a practical manner and achieve a good and satisfactory result when cleaning objects such as laundry or dishes.
  • the water-bearing domestic appliance has a rinsing chamber or treatment chamber that has a floor and side walls.
  • the rinsing chamber also has a Uncover or cover. It is accessible from the outside for handling dishes, either from the front or preferably from above.
  • the water-bearing household appliance has a receptacle for dishes or objects that are to be cleaned in the washing chamber.
  • a holder or crockery holder can be designed in many different ways, for example in the form of conventional grids, baskets or containers of different heights.
  • the water-bearing household appliance has a device for pumping water in order to pump water out of the washing chamber and pump it back into the washing chamber in order to clean the dishes arranged therein or objects arranged therein.
  • this is a pump.
  • Water can also be understood here as fluid in general, or the term “water” is intended here to include fluids in general, ie also air, gas and steam. Their introduction by means of a nozzle and their promotion by means of a pump are basically similar.
  • the water can partially circulate, partially fresh water can be supplied and partially used or dirty water can be pumped out of the water-bearing household appliance.
  • the water-bearing domestic appliance has at least one nozzle body with at least one nozzle opening in order to spray water into the washing chamber in order to be able to clean dishes or objects placed therewith.
  • this is sometimes also referred to as a nozzle, the expression “nozzle” essentially referring to the nozzle opening together with its function.
  • a plurality of nozzle bodies are advantageously provided, particularly advantageously at least a few identical nozzle bodies. They can each have exactly one nozzle opening, alternatively also two to five nozzle openings.
  • air or an air flow can also be conveyed through the at least one nozzle, for example for drying laundry or for drying dishes.
  • the at least one nozzle body is arranged on the bottom and/or on a side wall of the washing chamber, advantageously not protruding from or overhanging it by a few cm, but at least partially embedded in its surface.
  • the nozzle body protrudes over the surface of the bottom or the side wall by only less than half or less than a third of its smallest diameter.
  • This nozzle body is movable in order to be able to change the direction of a water jet discharged or sprayed out from the nozzle opening.
  • water should not always be sprayed out of a nozzle opening in the same direction.
  • the nozzle body is movably arranged in a nozzle receptacle on the floor or on the side wall of the washing chamber, the major part of the nozzle receptacle advantageously not protruding beyond the surface of the base or side wall, in particular more than 90% or completely.
  • the nozzle body and its nozzle opening are of supplied with water at the rear, which means that a water supply also runs under or behind the floor or side wall.
  • a nozzle seat is formed to have a nozzle seat opening. This is open into the rinsing chamber or points towards the rinsing chamber, just through the nozzle receiving opening.
  • the nozzle receptacle has a bearing surface on which the nozzle body is mounted or its mobility is guided.
  • the bearing surface can be curved in accordance with the nozzle body, alternatively it can also be annular or strip-shaped and be relatively narrow. It can be provided with a sealing function, which will be explained in more detail below.
  • the nozzle body is preferably also spatially curved, in particular at least partially spherical or in a section with a spherical shape, in particular towards the washing chamber.
  • the bearing or the nozzle holder is closed except for the said nozzle holder opening into the washing chamber and the through opening at the rear of the nozzle holder, i.e. no movable or protruding parts are provided.
  • water is introduced into the nozzle holder from behind, so to speak, and not necessarily directly into the nozzle body, whereby it then enters the nozzle body from behind inside the nozzle holder and exits again at the front through the nozzle opening into the washing chamber or is sprayed out as water jet.
  • a movement of the nozzle body to change the direction of the water jet sprayed out takes place without contact or a force acts on the nozzle body without contact in order to move it and thus change the spraying direction of the nozzle.
  • a water-bearing household appliance or a dishwasher or washing machine with at least one, advantageously several, nozzle openings that can each eject a jet of water in a direction that can be set and varied in a targeted manner.
  • An angular range can be between 30° and 120°, preferred in all directions.
  • the force acting on the nozzle body is a magnetic force.
  • the nozzle body can have permanent magnets or ferritic parts that are advantageously arranged on or in it. You can be used in it, for example, be injected.
  • Permanent magnets are preferred, in particular made of a strongly magnetic material such as, for example, cobalt-samarium, since these enable a stronger force to be exerted on the nozzle body in order to move it.
  • Magnets are provided near the bearing surface or the nozzle receptacle and outside of it, advantageously in the area separated from the water, in order to generate a variable magnetic field which causes a corresponding movement of the nozzle body.
  • Either these permanent magnets can be moved themselves, for example by suitable actuators, in order to move the nozzle body accordingly.
  • they are switchable or controllable magnets, in particular switchable electromagnets, which do not require any mechanical moving parts.
  • the magnetic field can be correspondingly varied and thus moved by switching several distributed magnets or electromagnets on and off differently, with the result that it moves the nozzle body.
  • Such distributed and switchable electromagnets are considered to be particularly preferred. They can be distributed around the nozzle holder, for example three or more.
  • At least one electromagnet should be arranged in an area pointing approximately in the opposite direction from the nozzle opening, with a ferritic part or a permanent magnet also being provided in this area of the nozzle body in order to be able to pivot the nozzle body better and more diversely.
  • the nozzle body is preferably of spherical design, ie arched or rounded. It can be at least partially rotationally symmetrical with an axis of rotation along which the nozzle opening runs or along which the nozzle opening points. A diameter can range between 0.5 cm and 5 cm.
  • the nozzle body can advantageously be made at least largely from plastic. It is possible and advantageous to form it at least partially as a sphere, in particular in the area inside the nozzle receptacle or particularly advantageously in this area towards the washing chamber.
  • Bearing means are advantageously provided in the nozzle holder for the nozzle body, with which friction of the nozzle body in the nozzle holder or relative to the bearing surface is intended to be reduced. Finally, the nozzle body is pressed against it with force, since it is pressed against by the water entering the nozzle holder at the back. Said bearing means should be distributed at at least three points between the nozzle body and the bearing surface. They are advantageously closed in a linear or even ring-shaped manner for consistently good support.
  • the bearing means are designed without moving parts, which reduces complexity and susceptibility to errors.
  • the bearing means can be in the form of slide bearings made from friction-reducing material, advantageously plastic, particularly advantageously PTFE, nylon or special materials such as Delrin® . These can be in ring form.
  • sealing means are provided between the nozzle body and the nozzle receptacle, which have a sealing effect between the nozzle body and the nozzle receptacle in the washing chamber. It can thus be prevented that water which enters the nozzle receptacle from behind, enters the washing chamber by a route other than through the nozzle opening, which would mean loss of water and, above all, a reduction in pressure.
  • the nozzle body should therefore be tight up to its nozzle opening in relation to the rinsing chamber or floor or side wall.
  • the sealing means are preferably arranged around the nozzle receiving opening or should run around it in a ring. You can follow exactly the course of the outer contour of the nozzle receiving opening, but can also be simply circular as an alternative.
  • the aforementioned sealing means have a circumferential sealing ring that runs around the receiving opening and is arranged there.
  • the sealing means should be at a certain distance from the nozzle receiving opening, for example at least 1 mm.
  • it is mainly important that the distance between the sealing means or an aforementioned sealing ring and the nozzle receiving opening is not too large, so in particular it can be a maximum of 10 mm. In this way it can be ensured that the space behind the nozzle receiving opening, into which the dirty water including the water from the washing chamber can also flow Contamination can occur, remains relatively small for hygienic reasons.
  • the named sealing means prefferably have the aforementioned bearing means or for the sealing means to form the bearing means at the same time.
  • This can be made of two materials in one part, alternatively a single material can also be provided which, due to its material properties, on the one hand causes sufficiently low friction and on the other hand achieves a sufficiently good sealing effect, in particular having a shape that is precisely adapted to the nozzle body for the sealing effect.
  • this should preferably not be at too great a distance from the through-opening.
  • This should advantageously ensure that water that enters the nozzle holder through the through-opening cannot penetrate to any great extent into the nozzle holder or can get between the nozzle holder and the nozzle body, namely it should enter the nozzle body as directly as possible. Then you don't have to pay attention to the fact that too much water can enter the washing chamber directly at the nozzle receiving opening.
  • the seal there is still important so that no water from the washing chamber can enter the nozzle holder, as explained above.
  • the first-mentioned seal into the wash chamber is very important, otherwise there could be a hygiene problem, while the other seal concerns a functionality problem for the nozzle function.
  • the water-carrying household appliance has a detection device in order to identify dishes to be cleaned or objects to be cleaned in the washing chamber and advantageously also to localize them.
  • the detection device should be able to identify the areas of the washing chamber that need to be cleaned, ie where the nozzle should boost a water jet or primarily spray it.
  • This is basically known from DE 102016202267 A1 for a dishwasher. It is precisely this that makes an advantageous use of the controllable nozzle or the controllable water jet from this nozzle particularly advantageous or can be used particularly well. In this way, a significantly more efficient operation or a significantly more efficient cleaning of dishes or other objects is possible, since it is not even necessary to spray in areas without dishes.
  • this detection device or another, differently designed device can be used to determine whether crockery or other objects located in the washing chamber are still dirty or have already been sufficiently cleaned. This can be done, for example, either purely optically, for example by measuring a degree of reflection of surfaces that are to be cleaned.
  • markers according to the DE 102016202267 A1 are used, which attach themselves to all or only certain types of dirt and then make them visually easy and clearly recognizable. A jet of water can thus be sprayed from the at least one nozzle in an even more targeted manner to where particularly intensive cleaning is required.
  • the aforementioned devices for detection or recognition advantageously have an optical functional principle, and they particularly advantageously have a camera or a CCD chip for this purpose.
  • a camera or a CCD chip for this purpose.
  • the location of crockery or objects to be cleaned or soiling on them can be easily recognized and determined with an accuracy of a few centimeters, preferably less than 3 cm.
  • Water can then be sprayed particularly intensively into these areas with one or more nozzles, in particular depending on the determined point, best from those nozzles that can reach this point or an area encompassing this point as well as possible.
  • This information can be in a controller of the water-bearing household appliance.
  • an aforementioned detection device can also have at least one or more photo sensors, which are of considerably simpler design. With these, shadowing, in particular against light from above or against light from opposite the detection device or the device for detecting dishes, can be used to identify where something is located in the washing chamber that needs to be cleaned.
  • photo sensors together with the corresponding simple light sources do not represent a great effort, and it is preferably also possible to use the ambient light that enters when the water-bearing household appliance is open, for example when the front door or top lid is open. This also results in a well-defined and previously known irradiation of light, which can be used with appropriate photo sensors as described above.
  • the devices mentioned make it possible to first determine whether and at what point crockery to be cleaned or corresponding objects are present in the washing chamber. Then, in a subsequent cleaning process, water can be discharged predominantly, in particular exclusively, at least from movable nozzles of the water-bearing household appliance be sprayed in their direction for an advantageous and intensive cleaning process.
  • water-bearing domestic appliance it may also be possible to check whether all dirt has already been removed, as has been described above. Then further cleaning by spraying water can be concentrated on the areas where contamination is just present or those areas can be excluded where no more contamination has been detected.
  • a schematic interior view of a dishwasher 11 is shown, which is a water-bearing household appliance.
  • the dishwasher 11 has a housing 12, which can be a conventional appliance housing. Alternatively, the dishwasher 11 can also be integrated into a sink in a sink or worktop, so that it is essentially such a sink or can also be used as such.
  • the dishwasher 11 has a top cover 14 that can be opened upwards, either folded or simply removed. Without the lid, it can be used as a normal sink. Below the lid 14 is a washing chamber 16 of the dishwasher 11 which has surrounding side walls 17 and a floor 18 .
  • a sump 20 is provided approximately centrally in the bottom 18, as can also be seen from the top view of FIG 2 can be seen. This sump 20 is used in the usual way to collect and drain water during the rinsing process, advantageously also during the aforementioned use as a sink.
  • a fresh water connection 22 leads into the dishwasher 11 from the left. This can possibly also lead directly into the washing chamber 16, for example via a lateral upper overflow opening, as is usually provided on sinks.
  • a water supply line 23 connected to the fresh water connection 22 can then be omitted. This water supply line 23 leads here directly into the sump 20.
  • a drain 25 leads downwards from the sump 20 .
  • a drain 25 leads downwards from the sump 20 .
  • a pump 27 which is advantageously a pump with integrated heating, connects downwards to the outflow 25 .
  • the pump 27 can be optimized for pumping water, alternatively also for pumping air. Then a jet of air comes out of the nozzle instead of the described water jet.
  • nozzles 30d are shown in dashed lines in the right-hand side wall 17 of the washing chamber 16, which are therefore optional. Additional nozzles 30 can also be provided in the other side walls 17 . Advantageously, no nozzles are provided on the cover 14, so that no complex water supply line has to be created here either.
  • a controller 55 for the dishwasher 11 is shown at the bottom right, which can preferably control all functions. To illustrate, go from the pump 27, the valve 28 and the nozzles 30 small arrows, which should mean such a control or signaling.
  • a previously explained detection device 56 is provided at the top right in the washing chamber 16 .
  • This can be a camera that is directed into the washing chamber 16 in order to remove dirt from dishes or the like. to be able to recognize. It is also connected to the controller 55 for evaluation.
  • a photo sensor 57 is installed in the floor 18 to the left of the sump 20 . It registers incident light from above, for example through transparent areas of the cover 14 . It can also light sources such as LED or the like. radiate light onto opposite photo sensors 57 in a targeted manner.
  • the photo sensor 57 can be activated for a previously explained detection of dishes or objects to be cleaned in the washing chamber 16 for a short time when the lid 14 is open, since sufficient incidence of light from the ambient light is then ensured. The resulting shading can be detected by the photo sensor 57, of which several can also be provided. Through its connection to the controller 55, the controller can then locate where items to be cleaned are located in the wash chamber 16. In this regard, reference is made to the aforementioned prior art.
  • the nozzles 30 can also follow predetermined movement patterns, in particular oscillate or be moved back and forth. These can then, overall, also be sufficiently distributed to jet or inject the water jets 35 into the washing chamber 16 . It can also be provided that the surface of the bottom 18 is sprayed on or cleaned by means of these water jets by transporting dirt on it into the middle and into the sump 20 1 covering sieve or similar getting cleaned. In a similar way, due to the free mobility of the nozzles, targeted or controlled blasting with air or steam can also take place, for example for drying or further treating dishes, laundry or the like.
  • a special feature can be provided for a central water jet 35' from the nozzle 30c.
  • the crockery receptacle 58 has a through-opening in the manner of a slit, possibly only interrupted by narrow webs.
  • the water jet 35' sprays directly vertically upwards, advantageously with even greater pressure than the other water jets 35, whereby it travels from the back to the front and back again as a result of corresponding pivoting movements of the nozzle 30c.
  • a baffle plate 63 is arranged, which deflects the water jet 35' simultaneously or by means of a corrugated shape alternately to the left obliquely downwards and to the right obliquely downwards, as illustrated. Provision can thus be made for water jets or water to reach the objects 59 to 61 to be cleaned from above by means of nozzles 30 arranged at the bottom in the washing chamber 16 . Then, as explained above, the complex and possibly disadvantageous and error-prone arrangement of nozzles together with the water supply line at the top of the movable cover 14 can be dispensed with.
  • the nozzles 30d in the right-hand side wall 17 also spray jets of water 35 inwards, which can also be moved in a targeted manner by the controlled, targeted movement of the nozzles.
  • the water jet 35' of the nozzle 30c thus advantageously moves only along one plane, so it can, so to speak, always move forwards and backwards along the baffle plate 63 by pivoting the nozzle 30c.
  • This special movement can also be carried out with a nozzle 30c according to the invention; alternatively, this nozzle can only be provided with a rigid pivot axis if it is only intended to carry out this one pivot movement.
  • the advantageous cleaning of the objects by means of the movable and controllable water jets 35 is easy to imagine and does not require any further explanation in detail.
  • the 4 12 shows a possible embodiment of a nozzle body 31 of a nozzle 30.
  • the nozzle body 31 is designed here in the form of a part of a sphere; it is only flattened on the side into the washing chamber 16.
  • the nozzle opening 33 is provided there.
  • the main purpose of this flattening is that the nozzle 30 protrudes as little as possible into the washing chamber 16 .
  • the nozzle receptacle 38 has a corresponding part-spherical bearing surface 39 .
  • an exact fit can also be provided with at least one surface made of particularly low-friction material.
  • a flow of water through the nozzle body 31 is not shown here.
  • the movement arrows below the bearing surface 39 indicate that the nozzle body 31 and thus also its nozzle opening 33 together with the water jets 35 shown in dashed lines can be pivoted about a center point M in the plane of the drawing.
  • the nozzle body 31 can also be rotated about an axis of rotation running in the plane of the drawing. Mixing motions from these are also possible in each case, so that the water jet 35 can actually be sprayed out in any controlled manner within a specific area.
  • a nozzle 30 can be seen with a part-spherical nozzle body 31 in a nozzle receptacle 38.
  • a nozzle opening 33 is provided at the top center above a center point M of the nozzle body 31.
  • An inlet opening 45 leads to the nozzle 30 from the rear, so that a through the nozzle body 31 through opening is present as a waterway.
  • the nozzle magnets 47 are advantageously very strong permanent magnets, for example rare earth magnets. You can be injected into a nozzle body 31 made of plastic.
  • the nozzle body 31 can have 3 to 10 such nozzle magnets 47 distributed in a ring. Alternatively, they can generally also be arranged along a helical line be. By rotating the nozzle body, pivoting or tilting can take place at the same time.
  • the nozzle holder 38 is designed in two parts here.
  • an upper nozzle receptacle 38a is inserted or screwed in ring form with a thread 38c running on the outside and pointing radially outward.
  • the lower nozzle receptacle 38b largely covers the nozzle body 31 from below and forms a large part of the bearing surface 39b.
  • the bearing surface 39a of the upper nozzle receptacle 38a is just a circumferential ring or ring strip, which can be screwed in by means of the thread 38c.
  • the underside of the annular upper nozzle seat 38a passes right through the center of the nozzle body 31, so the nozzle body 31 can be easily installed and removed.
  • the nozzle mounts 38a and 38b thus form a form-fitting mount for the nozzle body 31, from which it cannot be moved out, so it sits very securely and in a precise position.
  • unscrewing the upper nozzle receptacle 38a for example through tool openings or blind holes on its upper side, both the nozzle receptacle 38 and the nozzle body 31 can be easily cleaned after it has been removed. This is also possible for an operator without great technical knowledge.
  • Sealants are here in the figure 5 not shown, even if they can be advantageously provided, this is below for 6 still explained. This is sufficient for the expert. A seal can possibly also be achieved here by an exact fit of the respective surfaces.
  • a nozzle line 24 leads from the rear through the nozzle receptacle 38b and to the aforementioned inlet opening 45.
  • a through-opening 43 is provided on the nozzle receptacle 38b for this purpose.
  • Water can enter the nozzle body 31 through this nozzle line 24 and through the inlet opening 45 and exit there through the nozzle opening 33 as a water jet shown in dashed lines.
  • the type, a pressure and also a water volume of the water jet 35 can be set by the respective design of the geometry of the passage cross sections, in particular also the geometry of the nozzle opening 33 .
  • the movement magnets 49 are designed as electromagnets, if they are fixed as shown here, and can then be controlled individually by the controller 55 as required, optionally also together to collaborate.
  • the right motion magnet 49 is activated, but the left motion magnet 49 is not. If the power or magnetic force of the right-hand moving magnet 49 is reduced somewhat and the left-hand moving magnet 49 is partially activated, the nozzle body 31 pivots somewhat counterclockwise, which is easy to understand.
  • the nozzle body 31 pivots counterclockwise until the associated nozzle magnet 47 is located exactly opposite it, as was the case for the two right magnets beforehand.
  • a further range of movement for the nozzle 30 or the nozzle body 31 can easily be achieved by means of several movement magnets 49 or easily imaginable different placement. By offsetting the nozzle magnets 47 and movement magnets 49 in the direction into the plane of the drawing or out of the plane of the drawing, a corresponding movement component can also be brought about here.
  • FIG. 6 An alternative configuration for a nozzle 130 is shown, in which the complex part-spherical bearing surface can be dispensed with.
  • a rather box-shaped nozzle receptacle 138 is attached to a bottom 118 of the washing chamber 116 from behind.
  • the part-spherical nozzle body 131 is pressed against this bearing seal 153 , ie into the rinsing chamber 116 .
  • a circumferential sealing ring 151 is provided in the rear area, which is relatively wide and is adapted to the outer shape of the nozzle body 131 from a sealing surface. Both seals are as low-friction as possible in relation to the nozzle body 131, in order not to limit freedom of movement or to limit it too much.
  • a nozzle line 124 leads to the nozzle receptacle 138 from behind, so that water that is pumped up can enter through a through-opening 143 in the nozzle receptacle 138 and through an inlet opening 145 in the nozzle body 131 .
  • the water can emerge from the nozzle opening 133 provided on the front side or at the top as a water jet 135 shown in dashed lines.
  • the upper bearing seal 153 seals the interior of the nozzle receptacle 138 against the rinsing chamber 116, so that no contaminated water can enter here, which could lead to hygiene problems, as explained above.
  • the lower sealing ring 151 seals the nozzle receptacle 138 from the through-opening 143 . It is thus possible for the inlet opening 145 to be movable together with the nozzle body 131 in relation to the through-opening 143 or the nozzle line 124, but at the same time the water only gets into the nozzle body.
  • a flexible or movable hose as Nozzle line 124 may be attached to the inlet opening 145 of the nozzle body 131 directly from behind. Then the nozzle body 131 could be pressed against the bearing seal 153 by means of a spring force or by means of a fit for the sealing effect there.
  • a plurality of nozzle magnets 147 are again provided as permanent magnets.
  • moving magnets 149 are provided on the nozzle receptacle 138, here again advantageously in the specific configuration as electromagnets, so that they can be easily controlled.
  • the moving magnets 149 could be used individually or at least partially together by actuators such as electric motors or the like. be moved.
  • Movement magnets 49 designed as permanent magnets, but they are movable.
  • a carrier 50 can be moved up and down in the plane of the drawing between them, for example by an actuator such as a linear drive, a piezo drive or an electric motor.
  • the movement magnets 49 arranged in the carrier 50 thus move past the nozzle bodies 31 . Even without a fixed axis of rotation for the nozzle bodies 31, a relatively precise rotary movement can take place.
  • the controller 55 can specify this direction in which they are to be blasted or sprayed on dishes according to fixed programs or according to detected objects that are to be cleaned and that may also have been recognized as dirty. Due to the fact that the nozzle body is moved, so to speak, by a force acting without contact, the nozzle body can be mounted in a simple, safe and sealed manner.
  • An advantageous combination provides a movable carrier 50 according to the Figures 7 and 8 before, in which electromagnets are arranged. Then a particularly good mobility is given.
  • the direction of the water jets 35 does not necessarily run through the center point M of the nozzle body 131 .
  • a rotation of the nozzle body 31 then causes the generated water jet to oscillate or spin for a distributed effect.

Landscapes

  • Washing And Drying Of Tableware (AREA)

Claims (14)

  1. Appareil ménager à eau (11) comprenant :
    - une chambre de lavage (16, 116) avec un fond (18, 118) et des parois latérales (17),
    - un logement (58) pour la vaisselle (60, 61) ou les objets (59) à nettoyer dans la chambre de lavage (16, 116),
    - un dispositif (27) pour pomper de l'eau hors de la chambre de lavage (16, 116) et à nouveau dans la chambre de lavage (16, 116) pour nettoyer la vaisselle (60, 61) ou les objets (59) qui y sont disposés,
    - au moins un corps de buse (31, 131) avec une ouverture de buse (33, 133) pour projeter de l'eau (35, 135) dans la chambre de lavage (16, 116) afin de nettoyer la vaisselle (60, 61) ou les objets (59) qui y sont disposés,
    où
    - le au moins un corps de buse (31, 131) est disposé sur le fond (18, 118) et/ou sur une paroi latérale (17) de la chambre de lavage (16, 116),
    - le corps de buse (31, 131) est mobile afin de pouvoir modifier la direction d'un jet d'eau (35, 135) éjecté par l'ouverture de buse (33, 133),
    - le corps de buse (31, 131) est disposé de manière mobile dans un logement de buse (38, 138) sur le fond (18, 118) ou sur la paroi latérale (17) de la chambre de lavage (16, 116) et est alimenté en eau derrière le fond (18, 118) ou derrière la paroi latérale (17) de la chambre de lavage (16, 116),
    - le logement de buse (38, 138) présente une ouverture de logement de buse (41, 141) dans la chambre de rinçage (16, 116) et une surface d'appui (39),
    - le corps de buse (31, 131) est au moins partiellement bombé dans l'espace,
    - l'eau est introduite dans le corps de buse (31, 131) par l'arrière à travers une ouverture de passage (43, 143) dans la surface de support (39) du logement de buse (38, 138) et à travers une ouverture d'entrée (45, 145) à l'arrière du corps de buse (31, 131) luimême,
    - la surface d'appui (39) du logement de buse (38, 138) est fermée à l'exception de l'ouverture de logement de buse (41, 141) et de l'ouverture de passage (43, 143) ou ne présente pas de parties saillantes mobiles,
    - un mouvement du corps de buse (31, 131) s'effectue sans contact ou par une force qui agit sans contact sur le corps de buse (31, 131),
    caractérisé en ce que la force agissant sans contact sur le corps de buse (31, 131) est une force magnétique, le corps de buse (31, 131) présentant des aimants permanents (47, 147) ou des pièces ferritiques qui sont disposés sur et/ou dans celui-ci, et des aimants mobiles (49, 149) et/ou des aimants commutables et/ou des électroaimants pour une production variable d'un champ magnétique étant prévus à proximité de la surface de palier (39) et derrière celle-ci.
  2. Appareil ménager à eau selon la revendication 1, caractérisé en ce que plusieurs aimants (49) ou électroaimants mobiles sont disposés sur un support (50) commun, le support (50) étant mobile.
  3. Appareil ménager à eau selon la revendication 1 ou 2, caractérisé en ce que le corps de buse (31, 131) est de forme sphérique, en particulier symétrique en rotation avec un axe de rotation le long duquel s'étend l'ouverture de buse (33, 133) ou le long duquel l'ouverture de buse (33, 133) est orientée.
  4. Appareil ménager à eau selon la revendication 3, caractérisé en ce que le corps de buse (31, 131) est réalisé en forme de sphère partielle, en particulier dans la zone située à l'intérieur du logement de buse (38, 138).
  5. Appareil ménager à eau selon l'une des revendications précédentes, caractérisé par des moyens de support (153) pour le corps de buse (131) dans le logement de buse (138) pour une réduction du frottement du corps de buse (131) dans le logement de buse (138) ou par rapport à la surface de support, les moyens de support (153) étant de préférence répartis en au moins trois endroits entre le corps de buse (131) et la surface de support, notamment fermés en forme de ligne ou d'anneau.
  6. Appareil ménager à eau selon la revendication 5, caractérisé en ce que les moyens de palier (153) sont réalisés sans pièces mobiles, en particulier avec une surface en matériau réduisant la friction, de préférence en PTFE.
  7. Appareil ménager à eau selon l'une des revendications précédentes, caractérisé en ce que des moyens d'étanchéité (153) sont prévus entre le corps de buse (131) et le logement de buse (138) avec un effet d'étanchéité entre le corps de buse (131) et le logement de buse (138) dans la chambre de rinçage (116), les moyens d'étanchéité (153) étant de préférence disposés ou s'étendant autour de l'ouverture de logement de buse (141).
  8. Appareil ménager à eau selon la revendication 7, caractérisé en ce que les moyens d'étanchéité comportent une bague d'étanchéité périphérique (153) qui s'étend autour de l'ouverture de réception de buse (141), la distance entre la bague d'étanchéité (153) et l'ouverture de réception de buse (141) étant de préférence de 10 mm au maximum.
  9. Appareil ménager à eau selon la revendication 7 ou 8 et selon la revendication 5, caractérisé en ce que les moyens d'étanchéité (153) comportent les moyens de support ou en ce que les moyens d'étanchéité (153) forment simultanément les moyens de support.
  10. Appareil ménager à eau selon l'une des revendications précédentes, caractérisé par un dispositif de détection (56) de vaisselle (60, 61) ou d'objets (59) à nettoyer dans la chambre de lavage (16, 116), le dispositif de détection (56) étant notamment configuré pour détecter l'endroit où la vaisselle ou les objets à nettoyer sont disposés dans la chambre de lavage (16, 116).
  11. Appareil ménager à eau selon l'une des revendications précédentes, caractérisé par un dispositif permettant de déterminer si la vaisselle (60, 61) ou les objets (59) se trouvant dans la chambre de lavage (16, 116) sont sales ou déjà suffisamment nettoyés.
  12. Appareil ménager à eau selon la revendication 10 ou 11, caractérisé en ce que le dispositif de détection ou le dispositif de détermination présente un principe de radiooptique, de préférence une caméra (56), pour reconnaître un emplacement de vaisselle (60, 61) ou d'objets (59) à nettoyer dans la chambre de lavage (16) ou pour reconnaître des salissures sur la vaisselle (60, 61) ou les objets (59) à nettoyer.
  13. Appareil ménager à eau selon la revendication 10 ou 11, caractérisé en ce que le dispositif de détection (56) comporte des photocapteurs pour détecter, à partir d'une exposition, notamment à la lumière du dessus ou à la lumière du côté opposé au dispositif de détection (56) ou au dispositif de détermination, un emplacement de vaisselle (60, 61) ou d'objets (59) à nettoyer dans la cuve (16).
  14. Procédé de fonctionnement d'un appareil ménager à eau (11) utilisant de l'eau selon l'une des revendications 10 à 13, caractérisé en ce que, dans une étape préalable, on détecte ou on détermine si de la vaisselle (60, 61) ou des objets (59) à nettoyer sont présents dans la chambre de lavage (16, 116), puis, au cours d'une étape suivante, de l'eau (35, 135) est injectée pour nettoyer la vaisselle ou les objets avec le au moins un corps de buse mobile (31, 131), principalement en direction de la vaisselle (60, 61) ou des objets (59) détectés. - - - - - - - - - - - - - - -
EP20185738.0A 2019-07-25 2020-07-14 Appareil électroménager à circulation d'eau et procédé de fonctionnement d'un appareil électroménager à circulation d'eau Active EP3777639B1 (fr)

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DE102020201179A1 (de) 2020-01-31 2021-08-05 E.G.O. Elektro-Gerätebau GmbH Verfahren zum Betrieb eines wasserführenden Haushaltsgeräts und wasserführendes Haushaltsgerät
DE102021207441B3 (de) 2021-07-13 2022-06-02 E.G.O. Elektro-Gerätebau GmbH Verfahren zum Betrieb einer Waschmaschine und Waschmaschine

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US1916806A (en) * 1931-04-20 1933-07-04 George H Myrick Washing machine
DE19963496A1 (de) * 1999-12-28 2001-07-05 Johannes Guggenberger Vorrichtung zum Reinigen mit einer rotierenden Düse
JP4244374B2 (ja) * 2002-02-15 2009-03-25 Ｔｏｔｏ株式会社 吐水装置
EP1596700B1 (fr) 2002-12-25 2007-05-23 Arcelik Anonim Sirketi Lave-vaisselle et procede de commande associe
DE102007017271A1 (de) 2007-04-12 2008-10-16 BSH Bosch und Siemens Hausgeräte GmbH Pumpe mit Heizeinrichtung
DE102008050895A1 (de) 2008-09-25 2010-04-01 E.G.O. Elektro-Gerätebau GmbH Pumpe für Fluide
KR20130033811A (ko) * 2011-09-27 2013-04-04 엘지전자 주식회사 식기세척기
DE102013211180A1 (de) 2013-06-14 2014-12-18 E.G.O. Elektro-Gerätebau GmbH Pumpe
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US10076224B2 (en) * 2014-01-20 2018-09-18 Whirlpool Corporation Dishwasher
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