EP4486189A1 - Haushaltsgeschirrspülmaschine - Google Patents
HaushaltsgeschirrspülmaschineInfo
- Publication number
- EP4486189A1 EP4486189A1 EP23700970.9A EP23700970A EP4486189A1 EP 4486189 A1 EP4486189 A1 EP 4486189A1 EP 23700970 A EP23700970 A EP 23700970A EP 4486189 A1 EP4486189 A1 EP 4486189A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electric motor
- motor
- washware
- parameter
- domestic dishwasher
- 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
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
- A47L15/50—Racks ; Baskets
- A47L15/507—Arrangements for extracting racks, e.g. roller supports
-
- 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
- A47L2301/08—Other manual input
-
- 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
- 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
- A47L2401/34—Other automatic detections
-
- 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
- A47L2501/36—Other output
Definitions
- the present invention relates to a domestic dishwasher.
- washwashers The operation of domestic dishwashers (hereinafter also “dishwashers”) is to be increasingly simplified.
- a drive moves a washware holder, such as an upper or lower basket, out of and into the washing compartment of the dishwasher for loading and unloading.
- a washware holder such as an upper or lower basket
- the publication DE 102005 010616 A1 discloses a household dishwasher with a drive which is set up to automatically move a washware receptacle out of and into the washing compartment. A user can also move the washing compartment manually if a switching element decouples the drive from the washing compartment.
- the publications WO 2018/120924 A1 and WO 2020/124970 A1 disclose a household dishwasher with a driven washing item holder, which is attached to a drive via a magnetic device. A user can stop the powered washware holder and move it manually.
- a household dishwasher is provided with a washing compartment and a washware holder, which can be moved into and out of the washing compartment at least partially.
- the domestic dishwasher further includes an electric motor, which has at least one motor parameter, wherein the electric motor in a driving state moves the wash item holder into the washing tub or at least partially out of it and in a free-running state is decoupled from the wash item holder and/or switched to be powerless, and/or a control unit , Which regulates the electric motor at least in the driving state depending on at least one control parameter.
- the household dishwasher also includes a detection unit, which is set up to detect a blockage in the washware holder and/or a user's wish to stop, depending on the at least one control parameter and/or a motor parameter, and a switching unit, which is set up to switch the electric motor on as a function to switch to the free-running state after the detected blockage or the detected request to stop.
- a detection unit which is set up to detect a blockage in the washware holder and/or a user's wish to stop, depending on the at least one control parameter and/or a motor parameter
- a switching unit which is set up to switch the electric motor on as a function to switch to the free-running state after the detected blockage or the detected request to stop.
- One idea of the present invention is to use a control parameter and/or a motor parameter to detect a blockage in the washware holder. This increases the safety of the driven wash items holder, so that the risk of possible injuries to the user is reduced and items to be washed in the wash items holder are protected from damage.
- a "user request to stop” is to be understood as a user request to stop the washware receptacle.
- the desire is expressed in particular by the user exerting force on the washware holder, such as a force exerted by the user on the washware holder.
- the user can directly or indirectly cause the force to be applied to the washware holder.
- Direct action means that the user acts directly on the washware holder with his hand or another part of his body.
- An indirect effect means that one or more other components of the household dishwasher, such as a door, are connected between the force exerted by the user and the items being washed.
- a "user request to stop” is also to be understood in a broader sense as a request by the user for a changed movement of the items to be washed.
- the changed movement of the washware holder includes, in particular, the properties of movement speed and direction of movement of the washware holder.
- a changed speed of movement of the washware holder can mean an increase or a reduction in the speed of movement of the washware holder by the user.
- a changed direction of movement of the washware holder can mean a reversal of the direction of movement of the washware holder by the user.
- the user can also directly or indirectly cause the changed use to cause the items to be washed to be picked up.
- a blockage of the washware holder can be caused by items to be washed which have fallen over in the washware holder or by leftovers or washing residue which block a drive of the washware holder or parts of the drive, such as gear wheels or toothed racks.
- control parameters are to be understood as meaning parameters which are controlled by the control unit, for example in a control loop, such as a position or an extension path of the washware holder, or are included in the control.
- control unit is omitted.
- the electric motor is controlled by a control unit.
- the blockage and/or the request to stop are only recognized as a function of the motor parameters.
- motor parameters are to be understood as meaning parameters for motor control, such as a motor current, a motor voltage or a motor speed.
- a “wash item holder” is a holder, in particular a basket, for holding items to be washed, such as plates, cups, cutlery or bowls. In particular, it can be an upper or a lower dish rack, also known as an upper and lower dish rack, or a cutlery drawer.
- a “washing container” is a container in which one or more receptacles for items to be cleaned can be accommodated. The washing compartment has a washing chamber in which the items to be washed are cleaned and dried.
- the rinsing container is preferably cuboid.
- the detection unit detects the blockage and/or the desire to stop depending on a comparison of the motor parameter with a threshold value.
- the threshold value advantageously defines a switching condition from which the electric motor is switched to the freewheeling state. Exceeding or falling below the threshold value can be decisive.
- the threshold value has a value that is fixed or variable over time.
- variable value depends on the motor parameter, the control parameter, another parameter or a derivation of one or more of these parameters.
- the threshold value can be flexibly adapted to circumstances that change over time or otherwise.
- the derivation is in particular a time derivation.
- the control of the electric motor includes a comparison of a target value with an actual value, the control parameter being equal to the target value or the actual value and the detection unit detecting the blockage and/or the desire to stop depending on the comparison .
- the comparison By taking the comparison into account, a case can be detected in which the actual value no longer approaches the target value or even moves away from it. In this case, the regulation is obviously disturbed (which regularly pursues the regulation goal of bringing the actual value closer to the setpoint value), which indicates an external force effect, for example in the form of a blockage or a request to stop.
- the "comparison” has in particular a difference (formation) between the desired value and the actual value.
- the target value is a target position and the actual value is an actual position of the wash items receptacle.
- the position of the item to be washed is advantageously taken into account in the threshold value.
- the further parameter is determined as a function of an actual position of the washware holder with respect to a reference position of the same.
- the reference position has a value that is fixed or variable over time.
- the threshold value is increased in a start-up phase of the electric motor.
- variable value of the reference position corresponds to a respective approach position of the items to be washed.
- the approach position is taken into account over the entire extended length of the washware holder.
- one of the respective approach positions is half an extension length.
- a machine learning unit is provided which is set up to determine the threshold value as a function of learning data sets.
- the machine learning unit can have a neural network or a deep learning algorithm, for example.
- a mechanical coupling element decouples the washware receptacle from the electric motor, or the electric motor is de-energized.
- the wash items holder can be moved manually by the user, that is to say with practically no resistance.
- the wash item holder can be moved into or at least partially out of the washing compartment with the aid of a telescopic extension, the electric motor being set up to drive an element of the telescopic extension for moving the wash item holder.
- the electric motor is a permanent magnet synchronous motor.
- a method for operating a domestic dishwasher is proposed.
- a washware holder is moved using an electric motor, which has at least one motor parameter and/or is controlled as a function of at least one control parameter.
- a blockage in the washing item holder or a user's wish to stop is detected as a function of the motor parameter or the control parameter.
- the electric motor from the Items to be washed are decoupled or the electric motor is de-energized depending on the detected blockage or the detected request to stop.
- control unit or detection unit can be implemented by hardware and/or software.
- the units can be implemented on a microprocessor together with associated storage means.
- the microprocessor, together with storage means can be embodied, for example, on a central control unit of the domestic dishwasher.
- FIG. 1 shows a schematic perspective view of an embodiment of a domestic dishwasher
- FIG. 4 shows a time profile of a motor current when the threshold value is exceeded due to the force from FIG. 3;
- 5 shows a time profile of a motor current with a threshold value that changes over time
- 6 shows a schematic representation of a position control loop
- FIG. 8 shows a time profile of a motor current when the threshold value from FIG. 7 is exceeded.
- the household dishwasher 1 shows a schematic perspective view of an embodiment of a household dishwasher 1.
- the household dishwasher 1 comprises a washing container 2, which can be closed by 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 container 2 is preferably cuboid.
- the washing compartment 2 can be arranged in a housing of the domestic dishwasher 1 .
- the washing container 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 be made of a plastic material.
- the household dishwasher 1 also has at least one washware holder 12 to 14 .
- washware holder 12 being a lower washware holder or a lower rack
- washware holder 13 being an upper washware holder or an upper rack
- washware holder 14 being a cutlery drawer.
- the wash item 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 can be pushed or moved into the washing compartment 2 in an insertion direction E (arrow) and pulled out or moved out of the washing compartment 2 in an extension direction A (arrow) counter to the insertion direction E (arrow).
- the dishwasher 1 shows the domestic dishwasher 1 in a schematic side view.
- the dishwasher 1 has a telescopic extension 15 to which the washware receptacle 13 is attached.
- the dishwasher 1 also includes an electric motor 16 to drive an element 17, for example a rail, of the telescopic extension 15.
- the electric motor 16 is in a driving state, the wash items holder 13 is moved out of the washing compartment 2 and into it.
- the electric motor 16 is operatively connected to the washware holder 13.
- a combination of gear wheels (not shown) and toothed racks (not shown) is provided for the operative connection, for example.
- the gears and toothed racks mesh with one another and can be arranged, for example, on the washware holder 13 and/or on the telescopic extension 15 .
- the dishwasher 1 has a control unit 18 (optional) which controls the electric motor 16 as a function of at least one control parameter.
- the control parameter can be a position of the washware holder 13, for example.
- the dishwasher 1 also includes a detection unit 19 in order to detect a blockage in the washware receptacle 13 or a user's wish to stop. The recognition takes place depending on the control parameter or a motor parameter. The detection can also take place as a function of the control parameter and the motor parameter.
- the motor parameter is, for example, a motor current I, a motor voltage, a motor temperature or a motor torque.
- the control parameter can, in particular, be an extension path of the wash items holder 13 .
- the detection unit 19 may include a sensor (not shown) to detect the engine parameter.
- the dishwasher 1 has a switching unit 20 which switches the electric motor 16 to a freewheeling state when the detection unit 19 detects the blockage of the washware receptacle 13 or the user's desire to stop.
- the control unit 18, the detection unit 19 and the switching unit 20 are implemented, for example, as hardware and/or software on a central control unit (not shown) of the dishwasher 1. This can be the same control unit that is also responsible for the selection and execution of a respective washing program.
- the washing item receptacle 13 can be freely moved manually by the user in the retracting direction E (arrow) and the extending direction A (arrow).
- a coupling element (not shown), such as a switchable freewheel, can be arranged between the electric motor 16 and the washware receptacle 13 .
- the coupling element couples the electric motor 16 to the washware receptacle 13 in order to move it.
- the switching unit 20 decouples the coupling element from the electric motor 16 so that the wash items receptacle 13 can be moved freely.
- the freewheeling state of the electric motor 16 can also be achieved in that the electric motor 16 is switched off by the switching unit 20, for which purpose the electric motor 16 can advantageously be designed as a permanent magnet synchronous motor.
- the de-energized switching can be done for example via a relay (not shown).
- the user's wish to stop is expressed, for example, by a force 21 (arrow) which the user applies to the wash-ware receptacle 13 when it is moved in or out.
- the force 21 (arrow) can also act on the washware receptacle 13 as a result of a blockage.
- the electric motor 16 must provide an additional force 22 (arrow) in order to overcome the external force 21 (arrow). To provide the force 22 (arrow), the electric motor 16 must apply a higher torque, which is achieved by increasing a motor current I of the electric motor 16 .
- FIG. 3 shows a motor current I as a function of time before and during a sustained effect of the external force 21 (arrow; also “external force effect 21” below).
- the motor current I before the external action of force 21 is denoted by 11, while the motor current I after the external action of force 21 (arrow) is denoted by I2.
- the point in time at which the external force 21 (arrow) begins is denoted by t1.
- the motor current I increases linearly from I1 to I2, but can also increase exponentially, for example.
- the increase in motor current I3 takes place up to time t2, from which point motor current I reaches value I2, which is necessary to overcome external force 21 (arrow).
- the time difference between time t2 and the beginning of the application of force t1 is denoted by t3.
- the motor current I can also run dynamically within a current interval I4 and not along a fixed course of the motor current I1 and I2. This can be the case, for example, due to an undetermined or unknown load of the washware holder 13 or a dynamic behavior during the movement of the washware holder 13, such as during a start-up phase, as will be explained in more detail later.
- the lower limit of the motor current curve I within the current interval I4 is denoted by I5, while the upper limit of the motor current curve I within the current interval I4 is denoted by I6.
- FIG. 4 shows the motor current I as a function of time and an increase in the motor current I3 as a result of the action of force 21 (arrow).
- a fixed threshold value 23 is defined, for example stored in a memory (not shown) of the dishwasher 1 .
- the detection unit 19 (Fig. 2) compares the motor current I with the threshold value 23. If the motor current I the threshold value 23, the recognition unit 19 recognizes the blockage or the request to stop.
- the threshold value 23 can be adapted, for example, to a loading state of the wash items holder 13 . If the weight of the washware holder 13 is increased, a higher motor current I3' is required in order to move the washware holder 13. So that the detection unit 19 does not erroneously detect a blockage, the threshold value 23 is advantageously increased.
- the threshold value 23 can have a value which changes over time, as shown in FIG. 5 .
- the threshold value 23 can be reduced because the motor current I3" rises too quickly in the time difference t3. The reason for this is that a user request to stop or a blockage is associated with a very jerky and therefore rapid increase in the motor current I3.
- threshold value 23 is defined, for example, as a function of a time derivative of motor current I.
- control of the electric motor 16 includes a position control loop 24, which is illustrated in FIG.
- the control compares a target value SW with an actual value IW.
- the control parameter here the actual value DW—is controlled by the controller in such a way as to minimize a difference DW between the target value SW and the actual value IW.
- the target value SW can be a target position of the items to be washed receptacle 13, for example.
- the actual value IW can be, for example, an actual position s of the items to be washed receptacle 13 .
- the position control circuit from FIG. 6 includes the control unit 18 from FIG. 2, which controls the motor current I of the electric motor 16 from FIG.
- the washware receptacle 13 is then moved out of the washing compartment 2 and in the process covers an extension path s.
- a position of the washware receptacle 13 is determined, for example, via the extension path s.
- the position of the items to be washed 13 returns to the position control circuit 24 as the actual position IW or s, where it is compared to the setpoint value SW.
- the threshold value 23 can be defined, for example, as a function of the difference DW.
- FIG. 7 shows a motor current I as a function of time when the wash items holder 13 is started up.
- the approach phase s3 is described by an approach position s1 as the start and end approach position s2.
- the motor current I is increased.
- the threshold value 23 is both of the motor current I and of a reference position of the wash items holder 13 dependent.
- the reference position has a value that is fixed or variable over time.
- the reference position can be a position of the washware receptacle 13 over the entire extension length 25, for example the approach position s1, such as at half the extension length.
- motor current I is limited by threshold value 23 .
- the threshold value 23 is dependent on the motor current I and the position of the washware holder 13, the position being determined by the extension path s of the washware holder 13 and has a curve similar to the curve of the motor current I.
- the difference between the threshold value 23 and the motor current I remains constant. This difference corresponds to an additional motor current that is necessary to overcome the external force 21 (arrow).
- FIG. 8 shows the time profile of a motor current I from FIG. 7 when the threshold value 23 from FIG. 7 is exceeded in the start-up phase s3 of the wash items receptacle. This means that the blockage and the desire to start off can also be recognized during the starting phase s3.
- FIG. 9 shows steps of a method for operating a domestic dishwasher.
- a first step S1 the items to be washed 13 are moved with the aid of the electric motor 16 .
- the electric motor 16 has at least one motor parameter I and is controlled as a function of at least one control parameter s.
- the blocking of the washware holder 13 or the user's wish to stop is controlled as a function of the motor parameter I or the control parameter s.
- the electric motor 16 is decoupled from the washware receptacle 13 or switched to be powerless depending on the detected blockage or the detected request to stop.
- the dishwasher 1 has a machine learning unit (not shown) in order to determine the threshold value 23 as a function of learning data sets.
- the threshold value 23 can, for example, be defined once or continuously with new data sets.
Landscapes
- Washing And Drying Of Tableware (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022202168.1A DE102022202168A1 (de) | 2022-03-03 | 2022-03-03 | Haushaltsgeschirrspülmaschine |
| PCT/EP2023/050746 WO2023165752A1 (de) | 2022-03-03 | 2023-01-13 | Haushaltsgeschirrspülmaschine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4486189A1 true EP4486189A1 (de) | 2025-01-08 |
| EP4486189B1 EP4486189B1 (de) | 2025-12-31 |
Family
ID=85017618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23700970.9A Active EP4486189B1 (de) | 2022-03-03 | 2023-01-13 | Haushaltsgeschirrspülmaschine |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20250098934A1 (de) |
| EP (1) | EP4486189B1 (de) |
| CN (1) | CN118804705A (de) |
| DE (1) | DE102022202168A1 (de) |
| PL (1) | PL4486189T3 (de) |
| WO (1) | WO2023165752A1 (de) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005010616A1 (de) | 2005-03-08 | 2006-09-14 | BSH Bosch und Siemens Hausgeräte GmbH | Geschirrspülmaschine mit einem Lagerungsbehälter |
| JP4280783B2 (ja) | 2007-06-19 | 2009-06-17 | シャープ株式会社 | 引き出し式加熱調理器のドア開閉方法及び装置 |
| TW201249388A (en) * | 2011-06-09 | 2012-12-16 | Food Maid Co Ltd | Rotary type dishwasher |
| DE102013226910A1 (de) * | 2013-12-20 | 2015-06-25 | BSH Hausgeräte GmbH | Hebevorrichtung und wasserführendes Haushaltsgerät |
| DE102015226559B4 (de) | 2015-12-22 | 2025-03-20 | BSH Hausgeräte GmbH | Hebevorrichtung, Verfahren zum Betreiben einer Hebevorrichtung und Geschirrspülmaschine |
| DE102017114984A1 (de) * | 2016-07-12 | 2018-01-18 | Miele & Cie. Kg | Haushaltsgerät, insbesondere Geschirrspülmaschine |
| US10159398B2 (en) | 2016-12-27 | 2018-12-25 | Midea Group Co., Ltd. | Dishwasher rack system |
| DE102019106198A1 (de) | 2018-03-21 | 2019-09-26 | Miele & Cie. Kg | Geschirrspülmaschine, insbesondere Haushaltsgeschirrspülmaschine |
| DE102019211429A1 (de) | 2019-07-31 | 2021-02-04 | BSH Hausgeräte GmbH | Haushalts-Geschirrspülmaschine |
-
2022
- 2022-03-03 DE DE102022202168.1A patent/DE102022202168A1/de active Pending
-
2023
- 2023-01-13 PL PL23700970.9T patent/PL4486189T3/pl unknown
- 2023-01-13 EP EP23700970.9A patent/EP4486189B1/de active Active
- 2023-01-13 CN CN202380025094.5A patent/CN118804705A/zh active Pending
- 2023-01-13 WO PCT/EP2023/050746 patent/WO2023165752A1/de not_active Ceased
- 2023-01-13 US US18/836,378 patent/US20250098934A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN118804705A (zh) | 2024-10-18 |
| WO2023165752A1 (de) | 2023-09-07 |
| EP4486189B1 (de) | 2025-12-31 |
| US20250098934A1 (en) | 2025-03-27 |
| PL4486189T3 (pl) | 2026-03-23 |
| DE102022202168A1 (de) | 2023-09-07 |
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Legal Events
| Date | Code | Title | Description |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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