EP3624663B1 - Appareil ménager à circulation d'eau et procédé pour faire fonctionner un appareil ménager à circulation d'eau - Google Patents

Appareil ménager à circulation d'eau et procédé pour faire fonctionner un appareil ménager à circulation d'eau Download PDF

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Publication number
EP3624663B1
EP3624663B1 EP18722535.4A EP18722535A EP3624663B1 EP 3624663 B1 EP3624663 B1 EP 3624663B1 EP 18722535 A EP18722535 A EP 18722535A EP 3624663 B1 EP3624663 B1 EP 3624663B1
Authority
EP
European Patent Office
Prior art keywords
water
electric motor
household appliance
resistance
moving component
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
EP18722535.4A
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German (de)
English (en)
Other versions
EP3624663A1 (fr
Inventor
Bernd Eisenbart
Michael Lugert
Georg Hausmann
Andreas Heidel
Anton Oblinger
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
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Publication date
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Publication of EP3624663A1 publication Critical patent/EP3624663A1/fr
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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/14—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber
    • A47L15/18—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber with movably-mounted spraying devices
    • A47L15/22—Rotary spraying devices
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • 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
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4219—Water recirculation
    • A47L15/4221—Arrangements for redirection of washing water, e.g. water diverters to selectively supply the spray arms
    • 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
    • A47L2401/07—Status of hydraulic components, e.g. open/close status of water inlet/outlet valves, operating position of water diverters
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/24—Spray arms status, e.g. detection of spray arm rotation
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • 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
    • A47L2501/03—Water recirculation, e.g. control of distributing valves for redirection of water flow
    • 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
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/44—Current or voltage
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers

Definitions

  • the present invention relates to a water-bearing household appliance and a method for operating a water-bearing household appliance.
  • Water-carrying household appliances often have movable components, such as a water diverter, which are moved and/or brought into predetermined positions during operation of a respective appliance.
  • movable components such as a water diverter
  • a switching cam is used which, when the movable component is moved over a certain position, sends a signal to a control device so that the position is determined.
  • the switching cam must be coupled to the control device. This is done, for example, via a signal cable, which increases the complexity of the device due to the additional wiring effort.
  • Corresponding inputs are also to be provided on the control device.
  • Such a solution is, for example, from WO 2016/096019 A1 known.
  • DE 10 2007 041 299 A1 discloses a method for operating a dishwasher which has a washing compartment, at least two spray devices arranged inside the washing compartment, such as two spray arms or a spray arm and a roof spray, a reversing device and a drive which is operatively connected to the reversing device, in order to move the reversing device into different positions to bring includes. Furthermore, a circulating pump is provided which, depending on the set position of the reversing device, conveys liquid to one of the two and/or to both spray devices. The reversing device can be brought into a predetermined starting position. Starting from the predetermined initial position, the reversing device can be brought into a specific position. Other conventional devices are off DE 10 2010 000 351 A1 and WO 2008/125482 A2 known.
  • an object of the present invention is to provide an improved water-conducting household appliance.
  • a water-bearing household appliance in particular a dishwasher, with a movable component, an electric motor for moving the component at a predetermined speed, a control device for controlling the electric motor and a load device for providing a position of the movable component dependent and the Proposed movement of opposing resistance.
  • the control device is set up to detect the drive current consumed by the electric motor during the movement of the component at the specified speed and dependent on the resistance provided, and to determine the position of the movable component as a function of the detected drive current.
  • Such a water-carrying household appliance has the advantage that the position of the movable component can be determined, with additional cabling being required a position sensor and the position sensor itself can be dispensed with. In this way, in particular, the complexity of the water-conducting household appliance is reduced and costs can be saved. It is thus advantageously possible to detect the position of the movable component of the water-carrying household appliance without any additional cabling effort.
  • the electric motor is designed in particular as a brushless direct current motor (BLDC motor).
  • BLDC motor is driven, for example, with a predetermined DC voltage.
  • a direction of rotation and a speed of the BLDC motor can be controlled via a drive voltage.
  • the direction of rotation depends in particular on a polarity of the drive voltage and the speed on an amplitude or a magnitude of the drive voltage.
  • a BLDC motor of this type takes up a drive current that is dependent on a load. The higher the load, the greater the power of the BLDC motor. Therefore, the BLDC motor draws a higher drive current when the load is high than when it is light.
  • the control device is set up to control the electric motor.
  • the control device has, for example, a cable connection to the electric motor and can apply a predetermined drive voltage to it.
  • the control device has a voltage source for this purpose, in particular a voltage source with a controllable output voltage, such as a power supply unit or a transformer.
  • the voltage source is set up in particular to provide the specified drive voltage.
  • the electric motor takes up a drive current that is dependent on the load and is provided by the voltage source.
  • the control device can be implemented in terms of hardware and/or software.
  • the control device can be designed as a computer or as a microprocessor.
  • the control device can be embodied as a computer program product, as a function, as a routine, as part of a program code or as an executable object.
  • the control device can in particular be a central control device for operating the water-bearing household appliance.
  • the load device comprises a mechanical unit coupled to the movable component.
  • the loading device provides a resistance to the movement of the movable component. This resistance can be generated by friction, for example.
  • the movement of the movable component exhibits a natural resistance that depends in particular on the mounting of the movable component.
  • This resistance is referred to below as the basic resistance.
  • the basic resistance itself can already have a position-dependent value, for example.
  • the load device is set up to change this basic resistance in a targeted manner as a function of the position. This can include both a local reduction in resistance and a local increase in resistance.
  • the movable component is a spray arm of a dishwasher.
  • the spray arm is rotatably mounted, rotating the spray arm without a load device consumes a power loss of 1.2 W, for example.
  • the electric motor provides this power when operated with a drive voltage of 12 V by consuming a drive current of 0.1 A. If the load device is set up to provide increased resistance in a range of rotary movement, for example between 0° - 10°, so that the power loss in this range is doubled to 2.4 W, then the electric motor to provide this power increases 0.2A drive current to keep the spray arm rotating smoothly over this range.
  • the control device is set up to detect the drive current consumed by the electric motor and to use this to determine the position of the movable component.
  • the control device has, for example, an ammeter.
  • the recording can also include storing a recorded value.
  • the control device is set up in particular to compare a detected value with a reference value, to make assignments and/or to carry out different calculations. These calculations include, for example, determining function values and/or performing pattern recognition, in particular a spectral frequency analysis. In In the above example, by doubling the drive current, it can be concluded that the position of the spray arm is in the range between 0° -10°.
  • the movable component is designed as a water-carrying component, in particular as a spray arm of a dishwasher or as a water diverter.
  • These components are set up, for example, to perform a rotary movement.
  • they are mounted, for example, on an axis of rotation, such as a shaft or drive axle, which is rotatably mounted.
  • the movable component is set up to carry out a movement rotating about an axis.
  • Such a rotary movement is in particular periodic, which means that the movement is repeated after a complete rotation of the movable component.
  • the loading device is configured to provide increased resistance for every 5° at 90° intervals.
  • the drive current consumed by the electric motor is accordingly increased four times.
  • increased refers in particular to the drive current consumed at positions in which the resistance is not provided by the load device or is not increased, but only the basic resistance acts.
  • the load device is set up to provide a resistance that is dependent on a degree of rotation of the movable component.
  • the degree of rotation can be specified as an angle with respect to a starting angle. Since such a rotary movement is periodic, the starting angle can be chosen freely.
  • the load device includes a gear for coupling the electric motor to the movable component.
  • the load device thus fulfills a dual function: on the one hand, it already provides the position-dependent resistance, and on the other hand, it couples the electric motor to the moving component.
  • the transmission is set up to reduce a speed of the electric motor by a predetermined factor when the electric motor is coupled to the movable component.
  • the predetermined factor is also referred to as reduction, for example.
  • a drive torque for the movable component can in particular be changed by such a gear reduction.
  • a gear reduction is also advantageous in order to reduce a high speed of the electric motor and to increase the smoothness of the movement.
  • the transmission is set up to convert a rotary movement provided by the electric motor into a linear movement.
  • the load device is set up to provide the resistance according to a predetermined load function depending on the degree of rotation of the movable component.
  • the resistance thus has a resistance value depending on the degree of rotation.
  • the resistance value can increase linearly in proportion to the degree of rotation and return to the initial value after a full revolution.
  • the position of the movable component which is represented here by the degree of rotation, can be clearly mapped to the resistance value and thus also to the drive current consumed by the electric motor.
  • the load device is set up to measure the resistance as an increase in resistance and/or to provide a resistance reduction with respect to a base resistance corresponding to the resistance when moving the movable component without the loading device.
  • the position detection can be robust in particular with respect to disruptive influences, such as hydrodynamic disruptive variables that occur chaotically, or also mechanical disruptive variables, for example due to dirt particles that counteract the movement.
  • disruptive influences or also disruptive variables lead in particular to a locally increased resistance, for example because a dirt particle impedes the movement. If such a dirt particle adheres to a specific position, the electric motor takes up an increased drive current each time the movable component passes over this position. This could lead to erroneous position detection.
  • Such an erroneous position detection is ruled out by providing in particular a local reduction in resistance which cannot originate from one of the disturbance variables mentioned.
  • Such a reduction in resistance in relation to the basic resistance can be achieved, for example, by a load device which at the same time couples the electric motor to the movable component as a transmission.
  • a load device which at the same time couples the electric motor to the movable component as a transmission.
  • a power transmission from the electric motor to the movable component is suspended in places.
  • the movable component is therefore not driven at these points, which is why the basic resistance drops to zero in particular due to the movable component. Therefore, the drive current consumed by the electric motor is also zero or at least almost zero. A deviation from zero can occur in particular due to losses that are attributable to the electric motor itself.
  • control device is set up to control the electric motor depending on the determined position of the movable component in such a way that the movable component is moved into a predetermined position.
  • a predetermined position can be determined, for example, by a specific degree of rotation.
  • a spray arm of a dishwasher is brought into a predetermined position, a targeted cleaning of predefined or dynamically specific areas in the dishwasher can also be achieved.
  • a cutlery basket can be approached in a targeted and selective manner.
  • control device for determining a current load function of the movable component is set up to control the electric motor to carry out a full movement amplitude and to record the drive current consumed by the electric motor.
  • the movable component is arranged, for example, in an environment that is subject to greatly changing conditions, such as a washing chamber of a dishwasher. It can happen that the mechanical properties of the movement of the movable component, for example due to dirt, change with increasing service life of the water-bearing household appliance. Since such a calibration is carried out, for example, before each use of the water-bearing household appliance, the drive current consumed by the electric motor when the movement is carried out regularly can be recorded and stored as a reference. In particular, the control device is then also set up to determine the position of the movable component as a function of this reference.
  • a full amplitude of movement is understood to mean that the movable component reaches every position that the movable component can have exactly once.
  • a respective position can also be differentiated on the basis of different directions of movement.
  • the complete movement amplitude includes, for example, the movement from the left stop to the right stop and back again.
  • the movable component is controlled to carry out a full amplitude of movement, it can also be determined whether, for example, an object, such as items to be washed in a dishwasher, is blocking the movement sequence. In that case, it can also be provided that a corresponding error message or a warning is issued to a user of the dishwasher.
  • control device is set up to detect a blockage of the movable component as a function of the drive current consumed by the electric motor.
  • the water-bearing household appliance is in the form of a dishwasher, a washing machine or a tumble dryer.
  • a method for operating a water-bearing domestic appliance, in particular a dishwasher, with a movable component, an electric motor for moving the component and a control device for actuating the electric motor is proposed.
  • the electric motor is activated.
  • the control device applies a constant DC voltage to the electric motor.
  • a resistance that is dependent on a position of the movable component and opposes the movement is provided by a load device.
  • a drive current consumed by the electric motor and dependent on the resistance provided is detected. Recording is understood to mean, for example, recording, scanning or measuring.
  • the position of the movable component is determined as a function of the detected drive current.
  • the sensed drive current is a unique function of position.
  • the position can then be derived or calculated directly from the detected drive current by inverting the function.
  • a table can be provided in which values for the detected drive current are assigned to a position. This can also be referred to as a look-up table.
  • a computer program product such as a computer program means
  • a server in a network, for example, as a storage medium such as a memory card, USB stick, CD-ROM, DVD, or in the form of a downloadable file. This can be done, for example, in a wireless communication network by transferring a corresponding file with the computer program product or the computer program means.
  • the domestic dishwasher 1 includes a washing compartment 2, which can be closed by a door 3, which is in particular watertight.
  • a sealing device (not shown) 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 container 2 and the door 3 can form a washing chamber 4 for washing items to be washed.
  • Door 3 is in the 1 shown in their 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 domestic dishwasher 1 also has at least one washware receptacle 12, 13, 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 washing items receptacles 12, 13, 14 are arranged one above the other in the washing compartment 2.
  • Each washware holder 12 to 14 can be moved either into or out of the washing compartment 2 .
  • each washware receptacle 12, 13, 14 can be pushed into the washing compartment 2 in an insertion direction E and pulled out of the washing compartment 2 in a pull-out direction A counter to the insertion direction E.
  • An electric motor 20, a load device 30 and a movable component 40 are also arranged on the base 7 of the domestic dishwasher 1.
  • the electric motor 20 is designed to move the movable component 40, which is designed here as a spray arm of the domestic dishwasher 1, in particular at a predetermined speed.
  • the electric motor 20 is mechanically coupled to the spray arm 40 for this purpose.
  • the spray arm 40 is rotatably mounted on an axle (not shown). A movement of the spray arm 40 therefore corresponds to a rotation or rotational movement and the predetermined speed corresponds to a predetermined angular velocity.
  • the loading device 30 is coupled to the rotational movement of the spray arm 40 and is configured to oppose the rotation with a resistance that is dependent on a position of the spray arm 40 .
  • the position of the spray arm 40 is in particular clearly defined by a degree of rotation between 0-360°.
  • the resistance to rotation causes the spray arm 40 to be decelerated, which reduces an angular velocity or rotational frequency of the spray arm 40 .
  • a higher drive power is required for a short time.
  • the electric motor 20 briefly increases the drive current I 0 , I 1 , I 2 (see FIG Figures 2a, 2b ) on.
  • the duration of the time interval in which the drive current is increased depends in particular on the specified angular velocity and on the angular range in which the resistance is increased.
  • a control device 50 is arranged on the door 3 of the domestic dishwasher 1 .
  • the control device 50 is set up to control the electric motor 20 to move the spray arm 40 .
  • the control device 50 applies a predetermined drive voltage to the electric motor 20 for this purpose and makes the drive current I 0 , I 1 , I 2 consumed by the electric motor 20 available.
  • the control device 50 is also set up to detect the drive current I 0 , I 1 , I 2 consumed by the electric motor 20 . Based on the detected drive current I 0 , I 1 , I 2 , the control device 50 is also set up to determine the position of the spray arm 40 . For this purpose it can be provided that the control device 50 compares values, carries out calculations, determines function values, carries out a pattern recognition, in particular a spectral frequency analysis, and/or makes assignments.
  • Figure 2a shows a diagram of a drive current I 0 , I 1 consumed by an electric motor 20 as a function of a degree of rotation ⁇ of a movable component 40.
  • an electric motor 20 in the 1 illustrated domestic dishwasher 1, which is set up to move the spray arm 40.
  • a certain basic power is required to move the spray arm 40, which depends, for example, on the type of mounting of the spray arm 40.
  • the electric motor 20 achieves this basic performance by absorbing a drive current of the amplitude I 0 .
  • a load device 30 is also provided, which offers an increased resistance to the movement in a range of the degree of rotation ⁇ of the spray arm 40 from 135° to 180°. In this area, a higher power is required to carry out the rotary movement, in particular with a predetermined angular velocity.
  • the electric motor 20 therefore takes up a higher drive current I 1 in this area in order to provide this increased power.
  • the control device 50 is set up to detect the input drive current I 0 , I 1 , for example as a function of the degree of rotation ⁇ of the spray arm 40, and to determine the position of the spray arm 40 as a function of this.
  • the control device 50 compares the detected drive current I 0 , I 1 with a value stored in a memory (not shown), which corresponds to the drive current at basic power. If the detected drive current I 0 , I 1 is higher than the stored value, then the position of the spray arm 40 is in a range of 135° - 180° degrees of rotation.
  • the control device 50 is set up, for example, to determine a change in the detected drive current I 0 , I 1 and to determine the position of the spray arm 40 therefrom. As soon as the spray arm 40 exceeds 135°, the drive current I 0 , I 1 suddenly increases, resulting in a large positive change signal. Accordingly, when the spray arm 40 exceeds 180°, there is a large negative change signal. In this example, therefore, the position of the spray arm 40 can be accurately determined at two points.
  • Figure 2b shows another diagram of a drive current I 0 , I 1 , I 2 consumed by an electric motor 20 as a function of a degree of rotation ⁇ of a movable component 40.
  • the electric motor 20 in FIG 1 illustrated domestic dishwasher 1, which is set up to move the spray arm 40.
  • a load device 30 (see e.g 1 ) is provided, which provides a resistance to the rotational movement of the spray arm 40 depending on the position.
  • three load levels can be identified, which are characterized by a respective drive current I 0 , I 1 , I 2 .
  • the base load corresponds to a drive current I 0
  • an increased load corresponds to a drive current I 1
  • a reduced load corresponds to a drive current I 2 .
  • three areas with increased load are provided in the first 90°, each at 30° intervals, each spanning 5°-10°. After a further 90°, three areas follow, also at 30° intervals, in which the load is reduced for 5° -10° each. Accordingly, the drive current I 0 , I 1 , I 2 consumed by the electric motor 20 is increased or decreased in the respective areas.
  • control device 50 is therefore able to determine the position of the spray arm 40 very precisely.
  • the Figures 3a - 3c show an embodiment of a loading device 30, for example the loading device 30 of FIG 1 , in one position each.
  • the load device 30 comprises two gear wheels 31, 32 which mesh.
  • the first gear 31 is mounted on a shaft or drive axle 21 driven by the electric motor 20 (see Fig 1 ), possibly via a gearbox (not shown), is driven.
  • the teeth of the first gear 31 mesh with the teeth of the second gear 32, whereby a force is transmitted to the second gear 32.
  • the second gear 32 is mounted on a shaft or drive axle 41 which is used to drive or move a movable component 40 (see FIG 1 ) is set up.
  • the first gear wheel 31 has the special feature that there are no teeth in a small angular range.
  • Figure 3a shows a moment in which the second gear 32 is just driven by the first gear 31. However, the first gear 31 rotates according to the shown direction of rotation further, whereby the angular range of the first gear 31, in which no teeth are present, is rotated towards the second gear 32.
  • FIG. 14 shows a moment in which the angular range of the first gear 31 in which there are no teeth faces the second gear 32.
  • FIG. Therefore, the second gear wheel 32 is also not driven in this position and a load for the electric motor 20 and thus also a drive current I 0 , I 1 , I 2 consumed by it are reduced.
  • the moving member 40 may continue to move even at this moment due to inertia of the movement. However, the movement is preferably braked, so that the movable component 40 is in a defined position.
  • FIGs 4a and 4b show a further embodiment of a loading device 30, for example the loading device 30 of FIG 1 , in one position each.
  • the load device 30 has a concentric structure with cylindrical elements 33, 34, 35 arranged one inside the other.
  • a friction means 33 is arranged on an internal shaft or drive axle 21 and is firmly connected to the drive axle 21 .
  • the friction means 33 includes, in particular, polymeric components.
  • a friction layer 34 At a distance from the friction means 33, which forms a gap, follows a friction layer 34, which in turn is arranged on the inside of a bushing 35 and is firmly connected to it.
  • the socket 35 is, for example, firmly connected to an external housing (not shown) and is therefore immovable.
  • the friction means 33 has a projection 36 that is so large that it bridges the gap between the friction means and the friction layer 34 . That is, the projection 36 contacts the friction layer 34 and rubs on it. This is for example in the Figure 4a shown. This friction opposes increased resistance to rotation of the drive axle 21 .
  • the projection 36 can be made of the same material such as the friction means 33, but it can also be provided that they are made of a different, in particular more robust, material or that a coating of a more robust material is applied to them.
  • the friction layer 34 has a recess 37 .
  • This recess 37 is dimensioned in such a way that the projection 36 no longer rubs on the friction layer 34 when it is aligned in the direction of the recess 37 . This is for example in the Figure 4b shown. Thus, in this orientation, that is, when the projection 36 is oriented toward the recess 37, the additional load created by friction is eliminated.
  • an increased basic load is therefore generated, which is specifically reduced at one position.
  • figure 5 shows a schematic block diagram of an embodiment of a method for operating a water-bearing household appliance 1, for example the domestic dishwasher 1 .
  • an electric motor 20 is controlled by a control device 50.
  • the control device 50 applies a predetermined drive voltage to the electric motor 20 and a current I 0 , I 1 , I 2 drawn by the electric motor 20 (see Figures 2a, 2b ) provides.
  • a load device 30 (see 1 , 3a - 3c , 4a, 4b ) a resistance dependent on a position of a movable component 40 driven by the electric motor 20 is provided.
  • a third method step S3 the drive current I 0 , I 1 , I 2 consumed by the electric motor 20 and dependent on the resistance provided is detected.
  • the control device 50 has an ammeter for this purpose.
  • the detection of the drive current I 0 , I 1 , I 2 can also include storing the detected value.
  • a fourth method step S4 the position of the movable component 40 is determined as a function of the detected drive current I 0 , I 1 , I 2 .
  • the determination is made in particular by the control device 50, for example by comparing the detected drive current I 0 , I 1 , I 2 with values stored in a table.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Washing And Drying Of Tableware (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Claims (14)

  1. Appareil électroménager à circulation d'eau (1), en particulier lave-vaisselle comprenant un composant mobile (40), un moteur électrique (20) mettant en mouvement le composant (40) à une vitesse prédéfinie, un dispositif de commande (50) pour l'amorce du moteur électrique (20) et un dispositif de charge (30) pour fournir une résistance dépendant de la position du composant mobile (40) et allant dans le sens contraire du mouvement, dans lequel le dispositif de commande (50) sert à détecter le courant d'excitation (I0, I1, I2) dépendant de la résistance fournie et absorbé par le moteur électrique (20) pendant le mouvement du composant (40) à la vitesse prédéfinie et à déterminer la position du composant mobile (40) en fonction du courant d'excitation (I0, I1, I2) détecté.
  2. Appareil électroménager à circulation d'eau selon la revendication 1, caractérisé en ce que le composant mobile (40) est réalisé en tant que composant à circulation d'eau, en particulier en tant que bras aspergeur d'un lave-vaisselle ou en tant que dispositif d'aiguillage d'eau.
  3. Appareil électroménager à circulation d'eau selon la revendication 1 ou 2, caractérisé en ce que le composant mobile (40) sert à réaliser un mouvement de rotation autour d'un axe.
  4. Appareil électroménager à circulation d'eau selon l'une des revendications 1-3, caractérisé en ce que le dispositif de charge (30) sert à fournir une résistance dépendant du degré de rotation (ϕ) du composant mobile (40).
  5. Appareil électroménager à circulation d'eau selon la revendication 3 ou 4, caractérisé en ce que le dispositif de charge (30) comprend des engrenages qui couplent le moteur électrique (20) au composant mobile (40).
  6. Appareil électroménager à circulation d'eau selon la revendication 5, caractérisé en ce que les engrenages, lors du couplage du moteur électrique (20) au composant mobile (40) servent à réduire le régime du moteur électrique (20) d'un facteur prédéfini.
  7. Appareil électroménager à circulation d'eau selon l'une des revendications 4-6, caractérisé en ce que le dispositif de charge (30) sert à fournir la résistance conformément à une fonction de charge prédéterminée répondant au régime (ϕ) du composant mobile (40).
  8. Appareil électroménager à circulation d'eau selon l'une des revendications 1-7, caractérisé en ce que le dispositif de charge (30) sert à offrir la résistance sous la forme d'une augmentation de la résistance et/ou d'une diminution de la résistance en référence à une résistance de base, laquelle correspond à la résistance en cas de mouvement du composant mobile (40) sans dispositif de charge (30).
  9. Appareil électroménager à circulation d'eau selon l'une des revendications 1-8, caractérisé en ce que le dispositif de commande (50) sert à amorcer le moteur électrique (20) en fonction de la position déterminée du composant mobile (40) de telle sorte que le composant mobile (40) se déplace dans une position prédéterminée.
  10. Appareil électroménager à circulation d'eau selon l'une des revendications 1-9, caractérisé en ce que le dispositif de commande (50), pour déterminer une fonction de charge instantanée du composant mobile (40) amorce le moteur électrique (20) pour réaliser une amplitude de mouvement complète et détecte le courant d'entraînement (I0, I1, I2) absorbé par le moteur électrique (20).
  11. Appareil électroménager à circulation d'eau selon l'une des revendications 1-10, caractérisé en ce que le dispositif de commande (50) sert à reconnaître le blocage du composant mobile (40) en fonction du courant d'entraînement absorbé (I0, I1, I2) du moteur électrique (20).
  12. Appareil électroménager à circulation d'eau selon l'une des revendications 1-11, caractérisé en ce que l'appareil électroménager à circulation d'eau (1) est réalisé en tant que lave-vaisselle, machine à laver ou séchoir à linge.
  13. Procédé de fonctionnement d'un appareil électroménager à circulation d'eau (1), en particulier d'un lave-vaisselle comprenant un composant mobile (40), un moteur électrique (20) mettant en mouvement le composant (40) à une vitesse prédéfinie, et un dispositif de commande (50) amorçant le moteur électrique (20), comprenant :
    l'amorce (S1) du moteur électrique (20),
    la fourniture (S2) d'une résistance dépendant de la position du composant mobile (40) et allant dans le sens contraire du mouvement, au moyen d'un dispositif de charge (30),
    détection (S3) d'un courant d'excitation (I0, I1, I2) dépendant de la résistance fournie et absorbé par le moteur électrique (20) pendant le mouvement du composant (40) à la vitesse prédéfinie et
    détermination (S4) de la position du composant mobile (40) en fonction du courant d'excitation (I0, I1, I2) détecté.
  14. Produit de programmation informatique, lequel permet, sur un appareil où tourne un programme, l'exécution du procédé selon la revendication 13.
EP18722535.4A 2017-05-19 2018-05-07 Appareil ménager à circulation d'eau et procédé pour faire fonctionner un appareil ménager à circulation d'eau Active EP3624663B1 (fr)

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DE102017208527.4A DE102017208527A1 (de) 2017-05-19 2017-05-19 Wasserführendes Haushaltsgerät und Verfahren zum Betreiben eines wasserführenden Haushaltsgeräts
PCT/EP2018/061648 WO2018210594A1 (fr) 2017-05-19 2018-05-07 Appareil ménager à circulation d'eau et procédé pour faire fonctionner un appareil ménager à circulation d'eau

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DE102020214200A1 (de) 2020-11-11 2022-05-12 BSH Hausgeräte GmbH Geschirrspülmaschine, Verfahren und Computerprogrammprodukt
CN112773291B (zh) * 2021-01-07 2022-04-26 佛山市顺德区美的洗涤电器制造有限公司 用于洗碗机的控制方法、处理器、控制装置和洗碗机
DE102024209684A1 (de) * 2024-10-02 2026-04-02 BSH Hausgeräte GmbH Umwälzpumpe, insbesondere Heizpumpe, und wasserführendes Haushaltsgerät, insbesondere Haushalts-Geschirrspülmaschine

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GB482089A (en) * 1936-06-20 1938-03-23 British Thomson Houston Co Ltd Improvements in and relating to washing apparatus
EP1737332B2 (fr) * 2004-03-16 2020-06-10 Arçelik Anonim Sirketi Lave-vaisselle et son procede de commande
DE102007017274A1 (de) * 2007-04-12 2008-10-30 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zur Lageerkennung eines Verschlusselements in einer Wasserweiche
DE102007041299A1 (de) * 2007-08-31 2009-03-05 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Betreiben einer Geschirrspülmaschine
DE102007041313A1 (de) * 2007-08-31 2009-03-05 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Betreiben einer Geschirrspülmaschine
DE102008029910C5 (de) * 2008-06-24 2020-03-05 BSH Hausgeräte GmbH Verfahren zur Lastzustandserkennung einer Pumpe
JP5146331B2 (ja) * 2009-01-19 2013-02-20 パナソニック株式会社 食器洗い機
US8192551B2 (en) * 2009-02-20 2012-06-05 Whirlpool Corporation Obstacle sensing spray arm for a dishwashing machine
PL2916707T3 (pl) * 2012-11-08 2020-02-28 Electrolux Home Products Corporation N.V. Wykrywanie stanu roboczego zmywarki
KR101667589B1 (ko) * 2014-06-12 2016-10-28 엘지전자 주식회사 식기세척기 및 식기세척기의 제어방법
CN107072461B (zh) 2014-12-18 2019-12-31 伊莱克斯电器股份公司 包括喷射臂安排的洗碗机

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WO2018210594A1 (fr) 2018-11-22
CN110913740A (zh) 2020-03-24
US20200113407A1 (en) 2020-04-16
EP3624663A1 (fr) 2020-03-25
US11330956B2 (en) 2022-05-17
PL3624663T3 (pl) 2023-02-27
DE102017208527A1 (de) 2018-11-22

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