EP4216789A1 - Lave-vaisselle ménager - Google Patents

Lave-vaisselle ménager

Info

Publication number
EP4216789A1
EP4216789A1 EP21777242.5A EP21777242A EP4216789A1 EP 4216789 A1 EP4216789 A1 EP 4216789A1 EP 21777242 A EP21777242 A EP 21777242A EP 4216789 A1 EP4216789 A1 EP 4216789A1
Authority
EP
European Patent Office
Prior art keywords
spray device
placement area
cleaner
dishwasher according
blocking
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.)
Granted
Application number
EP21777242.5A
Other languages
German (de)
English (en)
Other versions
EP4216789B1 (fr
Inventor
Peter Schlögl
Daniel Miller
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete 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 BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP4216789A1 publication Critical patent/EP4216789A1/fr
Application granted granted Critical
Publication of EP4216789B1 publication Critical patent/EP4216789B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • A47L15/14—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
    • A47L15/23—Rotary spraying devices moved by means of the sprays
    • 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
    • A47L15/44—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants
    • A47L15/4436—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants in the form of a detergent solution made by gradually dissolving a powder detergent cake or a solid detergent block
    • 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
    • A47L15/44—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants
    • A47L15/4409—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants by tipping containers or opening their lids, e.g. with the help of a programmer

Definitions

  • the present invention relates to a domestic dishwasher.
  • a dishwasher has a washing compartment for receiving items to be washed.
  • items to be washed such as an upper basket or a lower basket, are accommodated in the washing compartment.
  • Rotatable spray arms can be provided above and/or below the items to be washed.
  • a lower spray arm and an upper spray arm can be provided.
  • a detergent falls into what is known as a tab tray, which can be provided on the upper basket, for example.
  • This tab shell features a water-permeable geometry at the bottom. This geometry is designed in such a way that a spray nozzle on the spray arm dissolves the cleaning agent.
  • the cleaning agent is only rinsed out during the passage of the spray arm below the tab tray.
  • the passage covers a maximum angle of 35° of spray arm rotation.
  • the complete dissolution of the cleaner takes a comparatively long time. This needs to be improved.
  • a domestic dishwasher with a washing compartment, a spray device rotatably mounted in the washing compartment for spraying items to be washed in the washing compartment with washing liquor and/or fresh water, a placement area on or in which a cleaning agent can be placed, and a blocking device which is set up to block a rotary movement of the spray device in such a way that the spray device sprays the placement area with washing liquor and/or fresh water in a targeted manner while it is blocked, in order to dissolve the cleaning agent.
  • the washing compartment is in particular cube-shaped or cuboid-shaped.
  • the washing compartment comprises a base on which a pump sump can be provided, a cover arranged opposite the base, a rear wall and two side walls arranged opposite one another.
  • the rinsing compartment can be closed with the aid of a door pivotably mounted on the rinsing compartment.
  • the door is arranged opposite the rear wall in a closed state. An allowance can be provided on the door in which the cleaner can be accommodated.
  • the household dishwasher preferably includes a plurality of items to be washed, for example a lower basket, an upper basket and a cutlery drawer.
  • the washware receptacles are arranged one above the other in the washing compartment and can be moved out of and into this.
  • the items to be washed can be loaded with items to be washed, to which washing liquor and/or fresh water can be applied with the aid of the spray device.
  • the placement area can be arranged on one of the items to be washed.
  • a coordinate system with an x-direction or width direction, a y-direction or vertical direction and a z-direction or depth direction is assigned to the washing compartment or the domestic dishwasher.
  • the directions are oriented perpendicular to each other.
  • the vertical direction is oriented from the floor towards the ceiling of the washing tub.
  • the width direction is oriented from a first side wall toward a second side wall.
  • the depth direction is oriented from the rear wall towards the closed door.
  • the placement area can be box-shaped or trough-shaped.
  • the placement area can be attached to one of the items to be washed.
  • the placement area is, or may be referred to as, a tab shell.
  • the cleaner can be in powder form, liquid form or tablet form, for example.
  • the cleaner is preferably in tablet form.
  • the blocking device is suitable, the spray device mechanically, electronically or in any other way.
  • the placement area is provided on a washware receptacle accommodated in the washing compartment.
  • the placement area is preferably provided on an upper basket.
  • the placement area can be bowl-shaped or box-shaped, as previously mentioned.
  • the placement area is preferably attached to a front side of the respective wash items holder. However, the placement area can be provided at any point within the washing compartment.
  • the spray device is rotatably mounted on the washware receptacle.
  • a channel is preferably provided on the washware receptacle, via which the spray device can be supplied with washing liquor and/or fresh water.
  • the channel can be coupled to a hydraulic system or water-filling system of the domestic dishwasher.
  • the spray device is preferably rotatably mounted on the channel, it being possible for the channel in turn to be firmly connected to the washware receptacle.
  • the spray device is arranged below the placement area, viewed along a direction of gravity.
  • the spray device sprays the placement area against the direction of gravity with the washing liquor and/or the fresh water. That means the cleaner is sprayed from below.
  • the blocking device unblocks the spray device as soon as the residual weight of the cleaner falls below a predetermined limit value.
  • the blocking device does not unblock the spray device until the cleaning agent has been completely or at least approximately dissolved.
  • the device can already clear the blockage of the spray device when the cleaning agent is, for example, 80%, in particular 90%, preferably 95%, more preferably 99% dissolved.
  • the blockage can be removed mechanically or electronically, for example.
  • a weight detection device is provided for detecting the remaining weight of the cleaner.
  • the blockade can also be lifted after a predetermined period of time has elapsed. For example, it can be assumed that the cleaner is almost completely dissolved after spraying it with dishwashing liquid and/or fresh water for five minutes.
  • the placement area includes a geometry that is set up to fan out a spray jet of the spray device.
  • the geometry is wedge-shaped or frusto-conical.
  • the spray device is actively driven with the aid of a drive element, the blocking device for blocking the rotational movement of the spray device controlling the drive element in such a way that the spray device is blocked.
  • the blocking device works electrically or electronically.
  • the drive element is no longer supplied with current, so that the rotational movement of the spray device is blocked.
  • the blocking device can be part of a control unit of the domestic dishwasher, for example.
  • the blocking device can also be part of a flushing program that is stored in the control unit.
  • the spray device is driven with the aid of washing liquor and/or fresh water emerging from the spray device, the blocking device for blocking the rotary movement of the spray device mechanically blocking the spray device.
  • the spray device can have drive nozzles, from which the washing liquor and/or the fresh water exits in order to set the spray device in rotation.
  • a "mechanical" blockage is to be understood here as meaning that the spray device is directly prevented from rotating by a component, for example by the placement area, regardless of whether washing liquor and/or fresh water emerges from the drive nozzles of the spray device or not.
  • the blocking device comprises a rotatably mounted rocker which has the placement area on a first end section and a counterweight for the cleaner on a second end section remote from the first end section, the placement area being in contact with the spray device to block the rotary movement of the spray device .
  • the rocker is rotatably mounted on a dishwashing receptacle.
  • the rocker can be provided on the underside of the items to be washed.
  • the rocker tilts about a bearing point such that the placement area blocks the spray arm so that it cannot rotate.
  • the counterweight moves the placement area back out of a range of rotation of the sprayer so that rotation of the sprayer is no longer blocked.
  • the placement area comprises a stop which is in contact with a corresponding counter-stop of the spray device in order to block the rotational movement of the spray device.
  • the stop is a pin or the like that extends out of the placement area on the underside.
  • the counter-stop can be a corresponding pin, which extends out of the spray device at the top.
  • the rocker is mounted eccentrically.
  • off-centre means in particular that the bearing point of the rocker is provided closer to the counterweight than to the placement area with the cleaner, for example.
  • a first lever arm of the cleaner is larger than a second lever arm of the counterweight.
  • the cleaner is farther from the bearing point than the counterweight.
  • the counterweight can be changed and/or a bearing point of the rocker can be moved in order to adapt the blocking device to different types of cleaner.
  • the counterweight can be made of metal, concrete or plastic, for example.
  • the counterweight can also be formed by a certain amount of washing liquor and/or fresh water.
  • different "types" of the cleaning agent should be understood to mean that, for example, different cleaning agent tablets with different weights can be used. Depending on the weight of the respective cleaner, either the counterweight is changed or the bearing point is moved.
  • the placement area is mounted in the washing container such that it can rotate about an axis of rotation, with the cleaner displacing the placement area against the spring force of a spring element in such a way that the placement area mechanically blocks the spray device to block the rotary movement of the spray device.
  • the placement area is in particular in the form of a trough or box.
  • the placement area is mounted, for example, on one of the items to be cleaned so that it can rotate about the axis of rotation.
  • the spring element is provided on the underside of the placement area.
  • the spring element can also be provided on the washware receptacle. In the event that the placement area is empty, the spring element moves the placement area in such a way that it does not collide with the spray device and thus also does not block the rotary movement of the spray device.
  • the weight of the cleaner compresses the spring element, so that the placement area moves into the rotation area of the spray device and thus blocks it.
  • the placement area releases the spray device as soon as the weight of the cleaner is less than the spring force.
  • FIG. 1 shows a schematic perspective view of an embodiment of a domestic dishwasher
  • FIG. 2 shows a schematic sectional view of the domestic dishwasher according to FIG. 1 ;
  • FIG. 3 shows a schematic view of an embodiment of a blocking device for the domestic dishwasher according to FIG. 1 ;
  • Fig. 4 shows view IV according to Fig. 3;
  • FIG. 5 again shows the view IV according to FIG. 3;
  • FIG. 6 shows a schematic perspective view of a further embodiment of a blocking device for the domestic dishwasher according to FIG. 1 ; and
  • FIG. 7 shows a schematic diagram in which the dissolution of a cleaner is plotted against time.
  • the domestic dishwasher 1 comprises a washing compartment 2, which can be closed via a door 3, which is in particular watertight.
  • a sealing device can be provided between the door 3 and the washing container 2 .
  • the washing compartment 2 is preferably cuboid.
  • the washing compartment 2 can be arranged in a housing of the domestic dishwasher 1 .
  • the washing compartment 2 and the door 3 can form a washing chamber 4 for washing items to be washed.
  • the door 3 is shown in FIG. 1 in its open position.
  • the door 3 can be closed or opened by pivoting about a pivot axis 5 provided at a lower end of the door 3 .
  • a loading opening 6 of the washing compartment 2 can be closed or opened.
  • the washing compartment 2 has a base 7, a cover 8 arranged opposite the base 7, a rear wall 9 arranged opposite the closed door 3 and two side walls 10, 11 arranged opposite one another.
  • the bottom 7, the top 8, the rear wall 9 and the side walls 10, 11 can be made from a stainless steel sheet, for example.
  • the bottom 7 can alternatively be made of a plastic material, for example.
  • the household dishwasher 1 also has at least one washware holder 12 to 14 .
  • washware holders 12 to 14 can be provided, with the washware holder 12 being a lower washware holder or a lower rack, the washware holder 13 being an upper washware holder or an upper rack and the washware holder 14 being a cutlery drawer.
  • the wash items receptacles 12 to 14 are arranged one above the other in the wash tub 2 .
  • Each washware holder 12 to 14 can be moved either into or out of the washing compartment 2 .
  • each washware holder 12 to 14 is in a single push-in direction E into the washing compartment 2 or can be pushed in and counter to the push-in direction E in a pull-out direction A can be pulled out or moved out of the washing compartment 2 .
  • the domestic dishwasher is assigned a coordinate system with an x-direction or width direction x, a y-direction or vertical direction y and a z-direction or depth direction z.
  • the width direction x is oriented from the side wall 10 in the direction of the side wall 11 .
  • the vertical direction y is oriented from the floor 7 in the direction of the ceiling 8 .
  • the depth direction z is oriented from the rear wall 9 in the direction of the closed door 3 .
  • the directions x, y, z are positioned perpendicular to each other.
  • a direction of gravity g is oriented from the ceiling 8 in the direction of the floor 7 and thus in the opposite direction to the vertical direction y.
  • FIG. 2 only shows the items to be washed 12, 13 accommodated in the washing compartment 2.
  • the items to be washed 14 are not shown in FIG.
  • a pump sump or sump 15 is provided on the washing container 2 , in particular on the bottom 7 of the washing container 2 .
  • the pump sump 15 can be a plastic component, in particular a plastic injection molded component.
  • the pump well is suitable for circulating washing liquor and/or fresh water F in the washing compartment 2 with the aid of a circulating pump 16 and for applying washing liquor and/or fresh water F to items to be washed 17 accommodated in the washing compartment 2 .
  • the circulating pump 16 is in fluid communication with the pump well 15 by means of a line 18 , so that the circulating pump 16 can suck washing liquor and/or fresh water F out of the pump well 15 and feed it to a water diverter 19 .
  • the circulation pump 16 is in fluid communication with the water diverter 19 by means of a line 20 .
  • the water diverter 19 comprises a perforated disk or perforated disk or is designed as a perforated disk or perforated disk which is rotatably mounted about an axis of rotation 21 .
  • a drive element for example an electric motor, can be provided for controlling the water diverter 19 .
  • a lower spray device 22 is accommodated in the washing container 2 .
  • the lower spray device 22 is rotatably mounted about an axis of rotation 23 .
  • the lower spray device Device 22 is in particular a spray arm.
  • the lower spray device 22 can be arranged below the wash items receptacle 12 viewed along the vertical direction y or along the direction of gravity g.
  • the lower spray device 22 is in fluid communication with the water diverter 19 by means of a line 24 .
  • an upper spray device 25 is arranged in the washing container 2 and is mounted such that it can rotate about an axis of rotation 26 .
  • the upper spray device 25 is arranged above the lower spray device 22 viewed in the vertical direction y or along the direction of gravity g.
  • the upper spray device 25 can be arranged below the washware receptacle 13 and thus between the washware receptacles 12, 13, viewed along the vertical direction y or the direction of gravity g.
  • the upper spray device 25 is also a spray arm.
  • the upper spray device 25 can be attached to the washware holder 13 . With the aid of the spray devices 22, 25, the items to be washed 17 can be wetted or sprayed with washing liquor and/or fresh water F.
  • the household dishwasher 1 also includes a roof spray device 27 which is arranged inside the washing container 2 .
  • the roof spray device 27 is arranged on the ceiling 8 .
  • the roof spray device 27 can be a roof gyroscope or a spray nozzle.
  • the items to be washed 17 can also be wetted with washing liquor and/or fresh water F with the aid of the roof spray device 27 .
  • the roof spray device 27 Viewed along the vertical direction y or along the direction of gravity g, the roof spray device 27 is positioned above the upper spray device 25 and above the washware receptacle 13 .
  • a water-carrying system 28 for supplying dishwashing liquid and/or fresh water F to the upper spray device 25 and to the roof spray device 27 runs away from the water switch 19 and on the rear of the rear wall 9 along the vertical direction y or along the direction of gravity g.
  • the water-carrying system 28 can have a feed pipe or be designed as a feed pipe. That is, the term "water-carrying system” can be replaced by the term "supply pipe". However, the water-carrying system 28 is not limited to the feed pipe. Furthermore, the water-carrying system 28 can include any other water-carrying components in addition to the feed pipe.
  • the water-carrying system 28 can, for example, include any water-carrying lines, spray arms, intensive spray zones or, in general, a spray system or the like.
  • the water-carrying system 28 can have any combination of the aforementioned components. It is assumed below that the water-carrying system 28 is a feed pipe of the domestic dishwasher 1 .
  • the water-carrying system 28 branches off towards the upper spray device 25 and to the roof spray device 27.
  • a first channel 29 branches off from the water-carrying system 28 at the level of the upper spray device 25.
  • the upper spray device 25 is rotatably mounted about the axis of rotation 26 on the first channel 29 .
  • the first channel 29 can be attached to the washware receptacle 13 . Rinsing solution and/or fresh water F can be supplied to the upper spray device 25 with the aid of the first channel 29 .
  • a second duct 30 branches off from the water-carrying system 28 at the level of the roof spray device 27 , with the aid of which rinsing solution and/or fresh water F can be supplied to the roof spray device 27 .
  • the channels 29, 30 are part of the water-carrying system 28.
  • the water-carrying system 28 is a plastic component or includes several plastic components.
  • the pump top 15 is covered with the aid of a fine sieve 31 .
  • the fine screen 31 can be a plastic component or a metal component.
  • a coarse screen (not shown in FIG. 2) or a coarse dirt separator is also provided.
  • the fine sieve 31 and the coarse sieve form a filter system for filtering out dirt particles from the washing liquor and/or the fresh water F.
  • the upper spray device 25 is mounted in the washing container 2 such that it can rotate about the axis of rotation 26 .
  • the upper spray device 25 is rotatably mounted on the first channel 29 .
  • the first channel 29 can be connected to the washware receptacle 13 so that the upper spray device 25 is also connected to the washware receptacle 13 .
  • the first channel 29 can have a coupling which enables the first channel 29 to be uncoupled from the water-carrying system 28 when the upper wash-ware receptacle 13 together with the first channel 29 and the upper spray device 25 is moved out of the washing tub 2 in the pull-out direction A .
  • the upper spray device 25 can be driven with the aid of washing liquor and/or fresh water F emerging from the upper spray device 25 .
  • the washing liquor and/or the fresh water F emerges from specially provided drive nozzles from the upper spray device 25 so that it is rotated about the axis of rotation 26 .
  • the upper spray device 25 can be actively driven with the aid of a drive element 32 .
  • “active” means that the drive element 32 causes the upper spray device 25 to rotate. In other words, in this case it is not the washing liquor and/or the fresh water F that exits that causes the upper spray device 25 to rotate, but rather the drive element 32.
  • a "passive" drive of the upper spray device means that there is no separate drive element 32 is provided, but that the upper spray device 25 is set in rotation exclusively with the aid of the washing liquor and/or the fresh water F emerging from the upper spray device 25 .
  • An addition device or addition 33 can be provided on the inside of the door 3 .
  • the addition 33 is suitable for containing a cleaning agent R.
  • the cleaner R can, for example, be in liquid or powder form.
  • the cleaner R can also be in the form of a tab or a tablet. That is, the detergent R can be a detergent tablet.
  • the addition 33 includes a cover 34 which opens during a washing process of the household dishwasher 1 so that the cleaning agent R falls into or onto a placement area 35 provided on the washware holder 13 .
  • the placement area 35 can be box-shaped or trough-shaped, for example.
  • the cleaning agent R is dissolved with the aid of washing liquor and/or fresh water F emerging from the upper spray device 25 .
  • the placement area can do this 35 may be formed, for example, in the form of a sieve or grid.
  • the detergent R is only sprayed with washing liquor and/or fresh water F when the upper spray device 25 moves past the placement area 35 .
  • This passage in the top sprayer 25 past the placement area 35 may cover an angle of about 35° of rotation of the top sprayer 25 .
  • two end portions of the top sprayer 25 effectively flush the cleaner R with only about 20% of a top sprayer 25 rotation.
  • the dissolving of the cleaning agent R takes several minutes. During this time of the dissolving of the cleaning agent R the full cleaning performance is not yet available. This needs to be improved.
  • the household dishwasher 1 comprises a blocking device 36 which is set up to block the rotational movement of the upper spray device 25 in such a way that the upper spray device 25 while it is being blocked specifically targets the placement area 35 with washing liquor and/or fresh water F sprayed to dissolve the cleaner R.
  • the blocking device 36 can work mechanically, electronically or in any other way.
  • the blocking device 36 is suitable for blocking or stopping the upper spray device 25 at least temporarily during a wash program of the household dishwasher 1, so that the detergent R can be dissolved quickly at the beginning of the wash program. Because the upper spray device 25 specifically sprays or wets only the placement area 35, a significantly improved dissolving behavior of the cleaning agent R can be achieved compared to a domestic dishwasher without such a blocking device 36.
  • the blocking device 36 controls the drive element 32 in such a way that the upper spray device 25 is blocked and, for example, a spray nozzle of the upper spray device 25 is aimed directly at the placement area 35 , in order to dissolve the cleaning agent R as quickly as possible.
  • the blocking device 36 can be part of a control unit of the domestic dishwasher 1, for example.
  • the blocking device 36 can in this case also be part of a washing program of the domestic dishwasher 1 stored in the control unit.
  • the blocking device 36 removes the blockage of the upper spray device 25 as soon as the residual weight of the cleaner R falls below a predetermined limit value.
  • the limit value can be 1 g or less, for example. This means that the blocking device 36 only releases the blockage of the upper spray device 25 when the cleaning agent R is preferably completely or at least approximately dissolved.
  • the placement area 35 can include a geometry 37 that is set up to fan out a spray jet of the upper spray device 25 . As a result, the entire cleaner R is wetted, as a result of which it dissolves more quickly.
  • the geometry 37 can be frusto-conical or wedge-shaped, for example.
  • the geometry 37 is provided on the underside of the placement area 35 .
  • FIG. 3 shows a schematic view of an embodiment of a blocking device 36 suitable for blocking the upper spray device 25 mechanically.
  • 4 and 5 each show the view IV according to FIG. 3. In the following, reference is made to FIGS. 3 to 5 at the same time.
  • the blocking device 36 comprises a rocker 39 which is rotatably mounted on a bearing point 38.
  • the bearing point 38 is provided on the wash-ware receptacle 13, for example.
  • the placement area 35 is provided at the end of the rocker 39 and is box-shaped in this case.
  • the placing area 35 is suitable for accommodating the cleaner R.
  • the cleaner R has a weight FR.
  • the rocker 39 has a counterweight 40 with a weight F40.
  • the counterweight 40 can be accommodated, for example, in a shell-shaped accommodation area 41 . However, the counterweight 40 can also be connected directly to the rocker 39 .
  • the bearing point 38 is placed eccentrically on the rocker 39.
  • the cleaner R is placed at a distance from the bearing point 38 by a lever arm 11 .
  • the counterweight 40 on the other hand, is placed away from the bearing point 38 by a lever arm I2.
  • the lever arm 11 is larger than the lever arm I2.
  • a stop 42 is provided on the placement area 35 and extends downward in the direction of the upper spray device 25 .
  • the counterweight 40 can be made of metal, plastic, concrete or the like, for example.
  • the counterweight 40 can also be dishwashing liquid and/or fresh water F, for example.
  • the counterweight 40 can either be preassembled or its mass can be variably changed by a customer. Furthermore, the possibility can be provided to change the position of the counterweight 40 on the rocker 39 or the position of the bearing point 38 .
  • the counterweight 40 lifts the placement area 35 upwards against an upper stop 43, 44 (Fig. 5), so that the upper spray device 25 can rotate freely under the placement area 35, as in Fig. 5 represented by an arrow 45.
  • the stop 42 is disengaged from a counter-stop 46 provided on the upper spray device 25. That is, the stop 42 and the counter-stop 46 do not touch, so that the rotational movement of the upper Spraying device 25 is not obstructed.
  • the balance of the seesaw 39 is shifted.
  • the placement area 35 tilts down onto a lower stop 47, 48 (Fig. 4).
  • the upper spray device 25 can no longer rotate freely since the counter-stop 46 hits the stop 42 . This means that the upper spray device 25 can only rotate until the counter-stop 46 hits the stop 42 .
  • a spray nozzle 49 of the upper spray device 25 is now located directly below the cleaner R, with the geometry 37 provided on the placement area 35 fanning out a spray jet 50 emerging from the spray nozzle 49, so that the entire cleaner R is exposed to washing liquor and/or fresh water F and dissolves faster.
  • the geometry 37 fans out the spray jet 50 of the spray nozzle 49 in such a way that the cleaner R is wetted, regardless of where it is located on or in the placement area 35 .
  • the placement area 35 rises again with the help of the counterweight 40, so that the Counter stop 46 disengaged from the stop 42 device.
  • the upper spray device 25 can now rotate freely again and sprays the items to be washed 17.
  • FIG. 6 shows a schematic view of a further embodiment of a blocking device 36.
  • the placement area 35 is bowl-shaped or trough-shaped and is suitable for receiving the cleaning agent R.
  • the placement area 35 is mounted rotatably about an axis of rotation 51 on the washware receptacle 13 .
  • the placement area 35 can have two arm sections 52 , 53 which are mounted such that they can rotate about the axis of rotation 51 .
  • the blocking device 36 also includes spring elements 54, 55, which apply a spring force FK to the placement area 35, which acts against the weight of the cleaner R FR.
  • the spring elements 54, 55 can be mounted, for example, on the washware receptacle 13.
  • the cleaner R presses the spring elements 54, 55 together, since the weight force FR is greater than the spring force FK. As soon as the weight force FR is less than the spring force FK, the spring elements 54, 55 press the placement area 35 upwards so that the upper spray device 25 can rotate freely.
  • FIG. 7 shows the solution behavior of the detergent R of a domestic dishwasher 1 with a blocking device 36 as explained above in comparison to a domestic dishwasher without such a blocking device 36.
  • a curve 56 shows the solution behavior in a domestic dishwasher without such a blocking device Blocking device 36, and a curve 57 shows the solution behavior in the household dishwasher 1 explained above.
  • the dissolution of the cleaning agent R is plotted as a percentage on the ordinate.
  • the time t is plotted on the abscissa.

Landscapes

  • Washing And Drying Of Tableware (AREA)
  • Detergent Compositions (AREA)

Abstract

L'invention concerne un lave-vaisselle ménager (1) comprenant une cuve de rinçage (2), un moyen de pulvérisation (22, 25) monté rotatif dans la cuve de rinçage (2) afin de pulvériser du liquide de rinçage et/ou de l'eau douce (F) sur des articles à laver (17) reçus dans la cuve de rinçage (2), une zone de placement (35) sur ou dans laquelle peut être placé un agent de lavage (R), et un moyen de blocage (36) conçu pour bloquer le mouvement de rotation du moyen de pulvérisation (22, 25) de sorte que ce dernier (22, 25) pulvérise, tout en étant bloqué, du liquide de rinçage et/ou de l'eau douce (F) sur la zone de placement (35), de façon ciblée, afin de dissoudre l'agent de lavage (R).
EP21777242.5A 2020-09-24 2021-09-09 Lave-vaisselle ménager Active EP4216789B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020212055.2A DE102020212055A1 (de) 2020-09-24 2020-09-24 Haushalts-Geschirrspülmaschine
PCT/EP2021/074803 WO2022063592A1 (fr) 2020-09-24 2021-09-09 Lave-vaisselle ménager

Publications (2)

Publication Number Publication Date
EP4216789A1 true EP4216789A1 (fr) 2023-08-02
EP4216789B1 EP4216789B1 (fr) 2024-08-28

Family

ID=77910768

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21777242.5A Active EP4216789B1 (fr) 2020-09-24 2021-09-09 Lave-vaisselle ménager

Country Status (5)

Country Link
US (1) US20240252016A1 (fr)
EP (1) EP4216789B1 (fr)
CN (1) CN116194025A (fr)
DE (1) DE102020212055A1 (fr)
WO (1) WO2022063592A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7988791B2 (en) 2008-01-14 2011-08-02 Whirlpool Corporation Dishwasher with multiple wash zones
DE102010042579A1 (de) * 2010-10-18 2012-04-19 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine mit zumindest einem rotierbaren Sprüharm
US9220393B2 (en) * 2012-09-13 2015-12-29 Whirlpool Corporation Dishwasher with controlled rotation of lower spray arm
WO2015090461A1 (fr) * 2013-12-20 2015-06-25 Electrolux Appliances Aktiebolag Agencement pour un lave-vaisselle permettant de créer une zone de lavage dont la position peut être sélectionnée
KR102429096B1 (ko) * 2018-02-08 2022-08-03 엘지전자 주식회사 식기세척기와 그의 제어방법

Also Published As

Publication number Publication date
EP4216789B1 (fr) 2024-08-28
WO2022063592A1 (fr) 2022-03-31
US20240252016A1 (en) 2024-08-01
CN116194025A (zh) 2023-05-30
DE102020212055A1 (de) 2022-03-24

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