EP4127296A1 - Verfahren zum betreiben eines waschautomaten und waschautomat - Google Patents
Verfahren zum betreiben eines waschautomaten und waschautomatInfo
- Publication number
- EP4127296A1 EP4127296A1 EP21715187.7A EP21715187A EP4127296A1 EP 4127296 A1 EP4127296 A1 EP 4127296A1 EP 21715187 A EP21715187 A EP 21715187A EP 4127296 A1 EP4127296 A1 EP 4127296A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drum
- laundry
- motor
- washing machine
- value
- 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
-
- 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
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
- D06F34/16—Imbalance
-
- 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
- D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
-
- 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
- D06F33/48—Preventing or reducing imbalance or noise
-
- 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
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/02—Rotary receptacles, e.g. drums
-
- 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
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
- D06F37/206—Mounting of motor
-
- 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
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/30—Driving arrangements
- D06F37/304—Arrangements or adaptations of electric motors
-
- 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
- D06F2103/02—Characteristics of laundry or load
-
- 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
- D06F2103/24—Spin speed; Drum movements
-
- 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
- D06F2103/26—Imbalance; Noise level
-
- 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
-
- 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
- D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
-
- 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
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
Definitions
- washing machine drums have ribs in their interior.
- a rib which is also referred to as a driver, is a part of the drum which, when the drum moves, also sets the laundry inside the drum in motion, i.e. takes it with it.
- the rib is usually a plate in the drum, to which the laundry in the drum hangs up to a certain height when the drum is rotated and then falls back down and is swirled and shifted in this way.
- ribs in the drum which are arranged at predetermined distances from one another. The ribs are essential so that the laundry is shifted while a washing program is being carried out. However, the ribs are additional components that incur costs. Therefore, a ribless drum would be desirable.
- the invention relates to a method for operating an automatic washing machine with a tub for receiving washing liquid, a ribless drum rotatably mounted in the tub for receiving laundry, a motor for driving the drum and a control device, having the following steps while the drum is rotating in one subcritical speed range
- the invention is based on the basic idea that rolling laundry in a washing drum differs from laundry lying next to it in that rolling laundry exerts impulses on the drum shell. They are caused by the surface of the rolling laundry, which in practice deviates from the perfect spherical shape. These pulses cause a deceleration of the drum's peripheral speed and thus a deviation or difference between the target and actual speed of the drum. This behavior can be evaluated mathematically by determining the mean value as well as the minimum and the maximum for each complete oscillation, ie one drum revolution.
- the mean value of all signal values is subtracted from all determined maxima and minima and the amount is calculated from the results. If one forms the standard deviation from these amounts as a measure for the fluctuation of the minima and maxima, it can be recognized whether there is rolling laundry in the drum, ie whether the drum is loaded with rolling laundry. According to the invention, it is recognized in the method as a function of the determined standard deviation whether laundry is rolling in the drum - or not. If it is determined in the method according to the invention that there is a loading situation with rolling laundry, a predetermined measure is preferably also carried out, which is stored in the washing machine, in order to prevent or at least reduce the rolling of the laundry.
- a ribless drum is a drum that does not have a rib or driver inside. However, it can have other elevations and / or depressions that do not have the shape of the plate-shaped rib or the driver.
- the drum preferably the drum shell, preferably has depressions and / or elevations other than ribs, for example in the form of embossings. It preferably has honeycombs, each of which is designed as an elevation or depression.
- the variable is scanned.
- the size is preferably sampled at a predetermined frequency.
- the predetermined frequency for sampling is preferably high and is, for example, 100 Hz.
- the physical variable relating to the drum or the motor is an actual speed of the drum or a variable that correlates with the actual speed.
- the physical quantity relating to the drum or the motor is a Torque of the motor or a quantity that correlates with the torque of the motor. More preferably, the size is the torque of the motor or the actual speed of the drum. More preferably, the size is the torque.
- the drum has a loading situation with rolling laundry when the ascertained standard deviation is greater than a predetermined limit value.
- the predetermined limit value is preferably stored in the washing machine.
- the method therefore preferably also has a comparison of the ascertained standard deviation with the predetermined limit value.
- limit values can also be stored in the washing machine, each of which depends, for example, on the speed of the drum at which the variable is scanned over the predetermined period and / or on the load quantity. The larger the load, the greater the problems with rolling laundry described above. Furthermore, several limit values can also be stored in the washing machine, each of which depends, for example, on the type of fabric to be subjected to the washing program, which is defined by the user setting the washing program when the washing program is started. Rolling is much more problematic for delicate laundry such as silk or wool than for less delicate laundry such as cotton laundry, because the risk of damage due to the friction between the textile and the drum shell is greater.
- a predetermined measure is furthermore preferably carried out.
- the predetermined measure is preferably carried out when the ascertained standard deviation is greater than the predetermined limit value.
- the predetermined measure is preferably stopping the rotation of the drum or continuing the rotation of the drum with a pendulum process.
- the rotation of the drum is continued in a pendulum process when it is recognized that the drum has a loading situation with rolling laundry. If the rotation of the drum is continued in a pendulum process, the drum is made to move right-left with the aid of the motor offset that a pendulum movement of the laundry is caused with a predetermined pendulum frequency. As a result, the drum does not make a complete rotation, but oscillates from left to right and vice versa.
- the washing program is preferably continued without performing the predetermined measure.
- the torque required to drive the drum also has a uniform sinusoidal curve.
- the torque of the motor is increased when an actual speed of the drum is less than a target speed of the drum, and decreased when the actual speed of the drum is greater than the target speed of the drum.
- a fixed imbalance that occurs in practice and is applied to the drum at speeds greater than the application speed causes a difference between the actual and target speed, which is determined by the regulation of the motor by increasing and reduction in torque is compensated for.
- the rolling, not perfectly round laundry exerts impulses of force on the drum shell, so that in addition to the deviation from the actual speed to the target speed caused by the fixed imbalance, another additional deviation occurs by chance. If these impulses occur, they also brake the drum if the fixed imbalance has to be increased. If the fixed unbalance has rotated further by 180 °, whereby the speed of the drum is increased, this increase in drum speed can be lower if an impulse caused by the rolling laundry occurs at this point in time.
- the minima and maxima below and above the mean value of the actual drum speed as well as the motor torque fluctuate more than in the case described above without rolling washing, in which only the fixed imbalance occurs.
- the predetermined period of time preferably has an integral multiple of a complete revolution of the drum.
- the integer multiple is preferably in the range from 2 to 20, more preferably 3 to 10. If the target speed of the drum is, for example, 120 min 1 , which corresponds to two complete revolutions of the drum per second, then the predetermined period of time can be, for example, 3 seconds that it comprises six complete revolutions of the drum.
- the method can also be carried out at any desired desired speed, the predetermined period of time being adapted accordingly and being stored accordingly in the washing machine. The longer an item of laundry rolls on the drum shell, the greater the risk that the textile will be damaged due to the friction between the textile and the drum shell.
- the predetermined period of time is therefore preferably in the period of a few seconds.
- the predetermined period of time is preferably in the range from 1 to 15 seconds. More preferably, the predetermined time is in the range of 2 to 10 seconds. More preferably, the predetermined time is in the range of 3 to 5 seconds.
- the invention also relates to an automatic washing machine with a tub for holding washing liquid, a ribless drum rotatably mounted in the tub for holding laundry, a motor for driving the drum and a control device which is designed and set up, a method according to one of the preceding claims perform. Embodiments and advantages described for the method apply accordingly to the washing machine and vice versa.
- the washing machine can be a front loader or a top loader.
- the term “washing machine” also includes a combination device such as a washer-dryer.
- the drum is preferably mounted in the tub so that it can rotate horizontally.
- the control device can be designed in one or more parts. In addition to regulating the speed of the motor for driving the drum, it has other regulations or controls that are required to carry out the washing program.
- Fig. 1 shows a partial curve of a torque in a time sequence.
- Fig. 1 shows the partial curve of the torque of a motor of a washing machine carrying out a washing program with a drum which has a loading situation with and without rolling laundry.
- Fig. 1 shows the time waveform of the torque at a target speed of the drum of 120 min -1 .
- the partial torque curve is shown for a predetermined period of 3 seconds, in which the drum executes six complete revolutions at two revolutions per second.
- a washing machine has a tub for holding washing liquid, a drum without ribs rotatably mounted in the tub for holding laundry, a motor for driving the drum and a control device with a motor control.
- the washing machine runs a washing program with laundry in the drum. In the course of the washing program, the drum is rotated at a target speed of 120 min -1.
- the control device determines, at least in part, a time profile of a torque of the motor while the washing program is being carried out. The determined course of the torque is shown in FIG. 1.
- Table 1 shows the respective minima and maxima of the signal curve of the engine torque for the case of the loading situation only with fixed imbalance without rolling washing, derived from FIG. 1, as well as the above-described process steps which lead to the formation of the standard deviation.
- the standard deviation is smaller than the predetermined limit value, so that it is recognized by means of the method that the drum has a loading situation without rolling laundry.
- the drum continues to rotate at the target speed of 120 min -1 .
- Table 2 shows the respective minima and maxima of the signal course of the engine torque for the case of the loading situation with fixed unbalance and with rolling washing, derived from FIG. 1, as well as the above-described process steps which lead to the formation of the standard deviation.
- Table 2 Representation of the minima and maxima per drum revolution, subtraction of the total mean value, amount formation and final result of the standard deviation for the case of the load situation with rolling laundry
- the standard deviation determined is now compared with the predetermined limit value which is stored in the washing machine and is 10, for example.
- the determined The standard deviation is greater than the predetermined limit value, so that it is recognized by means of the method that the drum is loaded with rolling laundry.
- a predetermined measure is also carried out, since it has been recognized that the laundry is rolling in the drum.
- the predetermined measure is to stop rotating the drum or to continue rotating the drum in a pendulum process.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020108714.4A DE102020108714A1 (de) | 2020-03-30 | 2020-03-30 | Verfahren zum Betreiben eines Waschautomaten und Waschautomat |
| PCT/EP2021/057257 WO2021197894A1 (de) | 2020-03-30 | 2021-03-22 | Verfahren zum betreiben eines waschautomaten und waschautomat |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP4127296A1 true EP4127296A1 (de) | 2023-02-08 |
| EP4127296B1 EP4127296B1 (de) | 2024-11-20 |
| EP4127296C0 EP4127296C0 (de) | 2024-11-20 |
Family
ID=75278000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21715187.7A Active EP4127296B1 (de) | 2020-03-30 | 2021-03-22 | Verfahren zum betreiben eines waschautomaten und waschautomat |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US12359360B2 (de) |
| EP (1) | EP4127296B1 (de) |
| KR (1) | KR20220151030A (de) |
| CN (1) | CN115516157B (de) |
| DE (1) | DE102020108714A1 (de) |
| ES (1) | ES2995465T3 (de) |
| PL (1) | PL4127296T3 (de) |
| WO (1) | WO2021197894A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LU103304B1 (de) * | 2024-05-21 | 2025-11-21 | Miele & Cie | Verfahren zum Betreiben eines Waschautomaten und Waschautomat |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5897672A (en) * | 1997-12-05 | 1999-04-27 | General Electric Company | Clothes fabric type blend detection method and apparatus |
| TR200401250T1 (tr) * | 2001-11-30 | 2005-10-21 | Ar�El�K Anon�M ��Rket� | Dengesiz yük tespit yöntemi |
| US7905122B2 (en) * | 2003-04-28 | 2011-03-15 | Nidec Motor Corporation | Method and system for determining a washing machine load unbalance |
| KR101287534B1 (ko) * | 2007-05-21 | 2013-07-18 | 삼성전자주식회사 | 세탁기 및 그 제어방법 |
| US8528229B2 (en) * | 2009-02-19 | 2013-09-10 | Whirlpool Corporation | Laundry treating appliance with imaging control |
| JP2010194216A (ja) * | 2009-02-27 | 2010-09-09 | Panasonic Corp | 洗濯機 |
| US8533882B2 (en) * | 2009-11-20 | 2013-09-17 | Whirlpool Corporation | Laundry treating appliance with controlled oscillating movement |
| US9157177B2 (en) | 2011-12-21 | 2015-10-13 | Whirlpool Corporation | Laundry treating appliance and method of control |
| US8875332B2 (en) * | 2012-07-10 | 2014-11-04 | Whirlpool Corporation | Laundry treating appliance and method of operation |
| CN104674532B (zh) * | 2013-11-26 | 2018-01-09 | 博西华电器(江苏)有限公司 | 衣物烘干设备和用于控制衣物烘干设备中冷凝器的方法 |
| EP2977497A1 (de) * | 2014-07-21 | 2016-01-27 | Electrolux Appliances Aktiebolag | Waschmaschine mit adaptivem Schleuderzyklus und Ansteuerungsverfahren dafür |
| KR102590137B1 (ko) * | 2016-07-18 | 2023-10-18 | 삼성전자주식회사 | 세탁기 |
-
2020
- 2020-03-30 DE DE102020108714.4A patent/DE102020108714A1/de not_active Withdrawn
-
2021
- 2021-03-22 US US17/915,586 patent/US12359360B2/en active Active
- 2021-03-22 KR KR1020227037861A patent/KR20220151030A/ko active Pending
- 2021-03-22 CN CN202180033439.2A patent/CN115516157B/zh active Active
- 2021-03-22 WO PCT/EP2021/057257 patent/WO2021197894A1/de not_active Ceased
- 2021-03-22 EP EP21715187.7A patent/EP4127296B1/de active Active
- 2021-03-22 ES ES21715187T patent/ES2995465T3/es active Active
- 2021-03-22 PL PL21715187.7T patent/PL4127296T3/pl unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE102020108714A1 (de) | 2021-09-30 |
| KR20220151030A (ko) | 2022-11-11 |
| US12359360B2 (en) | 2025-07-15 |
| ES2995465T3 (en) | 2025-02-10 |
| EP4127296B1 (de) | 2024-11-20 |
| CN115516157B (zh) | 2024-11-26 |
| US20230141282A1 (en) | 2023-05-11 |
| EP4127296C0 (de) | 2024-11-20 |
| PL4127296T3 (pl) | 2025-03-03 |
| WO2021197894A1 (de) | 2021-10-07 |
| CN115516157A (zh) | 2022-12-23 |
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