EP2403986A1 - Verfahren und schaltungsanordnung zum ermitteln der beladung und/oder der unwucht einer wäschetrommel einer waschmaschine - Google Patents
Verfahren und schaltungsanordnung zum ermitteln der beladung und/oder der unwucht einer wäschetrommel einer waschmaschineInfo
- Publication number
- EP2403986A1 EP2403986A1 EP10711608A EP10711608A EP2403986A1 EP 2403986 A1 EP2403986 A1 EP 2403986A1 EP 10711608 A EP10711608 A EP 10711608A EP 10711608 A EP10711608 A EP 10711608A EP 2403986 A1 EP2403986 A1 EP 2403986A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- laundry drum
- electric motor
- load
- current
- imbalance
- 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
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000005406 washing Methods 0.000 title claims abstract description 18
- 238000004804 winding Methods 0.000 claims abstract description 27
- 230000001360 synchronised effect Effects 0.000 claims description 15
- 230000007704 transition Effects 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 description 6
- 230000001419 dependent effect Effects 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007620 mathematical function Methods 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
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
- D06F34/18—Condition of the laundry, e.g. nature or weight
-
- 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
- D06F34/08—Control circuits or arrangements thereof
-
- 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
-
- 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
- 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
- D06F2103/04—Quantity, e.g. weight or variation of weight
-
- 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
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/38—Time, e.g. duration
-
- 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
- D06F2103/46—Current or voltage of the motor driving the drum
-
- 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
- D06F2105/54—Changing between normal operation mode and special operation modes, e.g. service mode, component cleaning mode or stand-by mode
Definitions
- the invention relates to a method for obtaining information about the loading and / or unbalance of a laundry drum of a washing machine, wherein the laundry drum is driven by means of an electric motor.
- the stator of the electric motor has at least one winding which is coupled to an inverter controlled by a control unit - also denoted as an inverter.
- the invention also relates to a circuit arrangement for determining the imbalance and / or the loading of a laundry drum.
- the invention relates to a washing machine with such a circuit arrangement.
- an electrical current flowing via the at least one winding of the stator and / or an electrical intermediate circuit voltage is measured. Furthermore, a profile of the electric power supplied by the electric motor in the generator mode is evaluated in each case for the duration of one revolution of the laundry drum. Depending on the measured values for the current and / or for the intermediate circuit voltage and depending on the power, the imbalance and / or the loading of the laundry drum is then deduced.
- the current flowing through the winding of the stator and / or the intermediate circuit voltage is used to determine the load and / or the imbalance of the laundry drum.
- the fact that the current flowing through the winding during generator operation and the intermediate circuit voltage represent a measure of the moment of inertia of the laundry drum and thus of its charge is used. This relationship is especially true immediately after the transition to generator operation - it is thus advantageous if the determination of the load and / or imbalance is initiated with this transition.
- the measurement of the current and / or the intermediate circuit voltage can also begin with this transition or immediately thereafter. However, the measurement of the current and / or the DC link voltage can also be done in addition to engine operation.
- the unbalance and the load can be determined individually for each
- a permanent-magnet synchronous motor is preferably used as an electric motor.
- Such synchronous motors are known to be characterized by high efficiencies over z. B. Asynchronous motors off.
- By a high efficiency of the electric motor can be made compact, so that advantages in terms of cost due to the material savings can be achieved.
- it is possible to use such a permanent-magnet synchronous motor whose stator has a three-phase design and thus has a total of three windings - so-called phase phases. Currents in all windings of the stator are preferably measured and evaluated with regard to the loading and / or the imbalance of the laundry drum. With a three-phase stator, measured values are available for a total of three currents for determining the load and / or the unbalance. The results of this determination can then be compared.
- a permanent-magnet synchronous motor is also advantageous that the currents flowing in the phase strands can be accurately detected by the inverter without much effort.
- the measured values for the current and / or for the intermediate circuit voltage are compared with values stored in a memory of the control unit. Depending on the outcome of this comparison then the
- Loading and / or imbalance can be determined.
- the values stored in the memory may be determined by experiments during a development phase of the washing machine.
- a relationship between the load and / or the imbalance to the measured values for the current and / or for the intermediate circuit voltage is modeled. It may, for example, be such that a plurality of value ranges are predetermined for the current and / or for the intermediate circuit voltage, which is assigned to a respective load of the laundry drum. Does that fall?
- an energy supplied by the electric motor during braking of the laundry drum ie during generator operation within a predefinable time interval, is calculated using the measured values for the current and / or the intermediate circuit voltage and the load and / or imbalance is / are determined from this energy.
- the energy supplied by the electric motor can be calculated either alone from the intermediate circuit voltage or from the measured current, a high accuracy and high
- resolution in the determination of the loading and / or the imbalance can be achieved, in particular, when the energy is calculated both from the intermediate circuit voltage and from the current. This calculation can be done for example by a simple multiplication.
- the energy delivered by the electric motor during generator operation within the predefinable time interval is available as the basis for determining the imbalance and / or the load.
- a relationship of the unbalance and / or the load to the calculated energy can be modeled.
- the modeling of this relationship can be done by a mathematical function.
- this relationship can be modeled by a characteristic curve.
- the moment of inertia of the laundry drum directly depends on its load.
- the moment of inertia can be determined using the measured values for the current and / or the intermediate circuit voltage and used as a measure of the loading of the laundry drum. For example, it may look like the moment of inertia of an unloaded one
- Laundry drum is stored in a memory of the control unit and the moment of inertia of the loaded laundry drum is determined in the generator mode. The moment of inertia caused by the loading of the laundry drum can then be calculated as a measure of the load by a simple subtraction.
- a profile of the power supplied by the electric motor in generator operation for the duration of one revolution of the laundry drum is evaluated, and depending on this course, the imbalance of the laundry drum is determined. It takes advantage of the fact that the imbalance of the laundry drum can be detected by means of a fluctuation in the course of the power for the duration of one drum revolution.
- Fluctuation of this course then represents a direct measure of the imbalance of the laundry drum.
- the invention provides a circuit arrangement for determining the imbalance and / or the loading of a laundry drum of a washing machine.
- the circuit arrangement comprises an electric motor which extends can be operated as a generator.
- the stator of the electric motor has at least one winding.
- the circuit arrangement further comprises an inverter for providing an electrical alternating voltage to the at least one winding of the stator.
- the circuit arrangement comprises a control unit for controlling the inverter.
- the control unit is designed to measure an electric current flowing in generator operation of the electric motor via the winding of the stator and / or an intermediate circuit voltage and, depending on measured values for the current and / or DC link voltage, the load and / or imbalance of the laundry drum to investigate.
- the invention finally includes a washing machine with a circuit arrangement according to the invention.
- Fig. 1 illustrates a circuit arrangement according to an embodiment of the invention
- Fig. 2 is a graph of a generator in the operation of a winding of a stator of a synchronous current flowing current.
- An illustrated in Fig. 1 circuit 1 is used to operate a washing machine.
- the circuit arrangement 1 comprises on the input side a bridge rectifier 2 with a total of four diodes, which is connected to terminals L, N.
- Parallel to the bridge rectifier 2 a DC / DC converter 3 is connected, by means of which supply voltages VCC and VDD are provided for the circuit arrangement 1.
- a voltage divider 5 is connected in parallel.
- the voltage divider 5 comprises three resistors 5a 5b, 5c and an impedance converter 5d.
- the impedance converter 5d is formed by an operational amplifier whose output is coupled to a first input 6 of a control unit 7.
- the control unit 7 is a microprocessor in the example.
- the control unit 7 can detect and evaluate the voltage applied to the intermediate circuit capacitor 4 via the first input 6. The intermediate circuit voltage is thus measured by means of the control unit 7 with the aid of the voltage divider 5.
- an inverter 8 is also connected as an inverter.
- the inverter 8 has the task to convert the rectified mains voltage into an AC voltage.
- the inverter 8 comprises six bipolar transistors T1 to T6 with insulated gate electrode (IGBT); to each bipolar transistor T1 to T6, a diode D1 to D6 is connected in parallel.
- the transistors T1 to T6 are controlled by the control unit 7 via a driver circuit 7a.
- the inverter 8 is used to drive a permanent-magnet synchronous motor or a brushless DC motor 9, the stator - as shown schematically in Fig. 1 - is designed three-phase and thus three windings W, V, U has.
- the rotor of the synchronous motor 9 is mechanically coupled via a belt with a washing drum of the washing machine.
- the inverter 8 is divided into three circuit branches 8a, 8b, 8c, each circuit branch 8a, 8b, 8c respectively comprising two bipolar transistors T1 and T2, T3 and T4, T5 and T6 connected in series with each other.
- the windings W, V, U of the stator are each coupled to a circuit branch 8a, 8b, 8c of the inverter 8.
- a Measuring device 10 For measuring in the generator mode of the synchronous motor 9 via the windings W, V, U flowing phase currents l w , l v , Iu is in the circuit 1 a Measuring device 10 is provided. By means of the measuring device 10 are in the windings W, V, U or the circuit branches 8a, 8b, 8c flowing currents l w , iv, Iu tapped separately and via in each case an impedance converter 10a, 10b, 10c to each input 1 1, 12, 13 of the control unit 7 transmitted.
- a sum current I WV u from currents l w , l v , Iu all windings W, V, U formed and delivered via an impedance converter 14 a to an input 15 of the control unit 7.
- the total current l W vu is due to the phase shift of the currents l w , Iv, Iu normally OA. If no phase symmetry between the currents l w , Iv, Iu more given, so this error case can be determined by the current strength of the sum current l W vu.
- a method makes use of the circuit arrangement 1, as shown in FIG.
- the loading and the imbalance of the laundry drum is determined by the control unit 7; in the generator operation of the synchronous motor 9.
- the method makes use of the fact that the current intensity of the currents l w , Iv, Iu flowing in the windings W, V, U and thus in the circuit branches 8a, 8b, 8c are each a measure of represent the loading and the imbalance of the laundry drum.
- the DC link voltage which is present in the generator operation on the DC link capacitor 4, or an increase in this voltage at a transition from the engine operation in the generator mode provides / represent a measure of the load and imbalance.
- the current l w , Iv, Iu is evaluated immediately after the transition from engine operation in the generator mode of the synchronous motor 9; then the current peaks of this current l w , Iv, Iu represent a decisive measure for the loading of the laundry drum.
- FIG. 2 an exemplary profile of the current I w , Iv, Iu flowing over one of the windings W, V, U is over the time t is shown immediately after the transition to generator operation. As can be seen from the graph of Fig.
- the current peaks of the current Iw, Iv, Iu can be compared with values stored in a memory; and depending on this comparison, the loading of the laundry drum can then be determined.
- two value ranges B1, B2, B3 are shown in FIG. 2 for each one different loading of the laundry drum shown; are the current peaks of the current l w , Iv, Iu in the first value range B1, so there is a small load of the laundry drum. Accordingly, the value ranges B2 and B3 are given for a medium or a large loading of the laundry drum. From the current peaks of the current l w , Iv. As shown in FIG. 2, a large load of the laundry drum emerges.
- both the intermediate circuit voltage applied to the intermediate circuit capacitor 4 in the generator mode and an increase in this intermediate circuit voltage, as well as the current I w , I v , Iu are used in the method.
- a power supplied by the synchronous motor 9 in generator operation within a predetermined time interval is calculated.
- From this energy information about the current moment of inertia of the laundry drum is then obtained, and it is inferred on the loading of the laundry drum depending on the moment of inertia.
- the relationship of the moment of inertia to the calculated energy can be modeled by a mathematical formula or it can be modeled by a characteristic curve.
- the determination of the imbalance of the laundry drum is dependent on a time course of the synchronous motor 9 supplied in the generator mode electrical power. This power is continuously calculated by means of the control unit 7 from the measured values for the current l w , Iv, Iu and for the intermediate circuit voltage, and the course of the power is evaluated in each case for the duration of one revolution of the laundry drum. Ripples of this course or occurring in the course fluctuations then represent a measure of the imbalance of the laundry drum. LIST OF REFERENCE NUMBERS
- VCC VDD supply voltage
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200910001271 DE102009001271A1 (de) | 2009-03-02 | 2009-03-02 | Verfahren zum Ermitteln der Beladung und/oder der Unwucht einer Wäschetrommel einer Waschmaschine und entsprechende Schaltungsanordnung |
PCT/EP2010/052015 WO2010100030A1 (de) | 2009-03-02 | 2010-02-18 | Verfahren und schaltungsanordnung zum ermitteln der beladung und/oder der unwucht einer wäschetrommel einer waschmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2403986A1 true EP2403986A1 (de) | 2012-01-11 |
EP2403986B1 EP2403986B1 (de) | 2012-11-21 |
Family
ID=42236403
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20100711608 Active EP2403986B1 (de) | 2009-03-02 | 2010-02-18 | Verfahren und schaltungsanordnung zum ermitteln der beladung und/oder der unwucht einer wäschetrommel einer waschmaschine |
Country Status (6)
Country | Link |
---|---|
US (1) | US9096964B2 (de) |
EP (1) | EP2403986B1 (de) |
CN (1) | CN102341538B (de) |
DE (1) | DE102009001271A1 (de) |
EA (1) | EA019472B1 (de) |
WO (1) | WO2010100030A1 (de) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009028810A1 (de) * | 2009-08-21 | 2011-02-24 | BSH Bosch und Siemens Hausgeräte GmbH | Verfahren zum Ermitteln einer Unwucht bei einer Wäschetrommel einer Waschmaschine im Schleuderbetrieb, Antriebsvorrichtung und Waschmaschine mit einer Antriebsvorrichtung |
DE102011106578A1 (de) * | 2011-06-16 | 2012-12-20 | Andreas Stihl Ag & Co. Kg | Akkubetriebener Elektromotor in einem Arbeitsgerät |
DE102012205816A1 (de) | 2012-04-10 | 2013-10-10 | BSH Bosch und Siemens Hausgeräte GmbH | Motoransteuerschaltung für einen bürstenlosen Waschmaschinenmotor |
US8875332B2 (en) | 2012-07-10 | 2014-11-04 | Whirlpool Corporation | Laundry treating appliance and method of operation |
DE102013215675A1 (de) | 2013-08-08 | 2015-02-12 | BSH Bosch und Siemens Hausgeräte GmbH | Betreiben eines Wäschetrocknungsgeräts mit horizontal drehbarer Wäschetrommel |
CN104155604B (zh) * | 2014-07-23 | 2017-02-01 | 惠而浦(中国)股份有限公司 | 一种基于实际负载的洗衣机电机测试装置 |
JP2016083317A (ja) * | 2014-10-29 | 2016-05-19 | 株式会社東芝 | 洗濯機 |
JP6605836B2 (ja) * | 2015-04-21 | 2019-11-13 | 東芝ライフスタイル株式会社 | 洗濯機のモータ駆動装置 |
US9988751B2 (en) | 2015-07-29 | 2018-06-05 | Whirlpool Corporation | Laundry treating appliance and methods of reducing tub contact therein |
US10273621B2 (en) | 2015-10-01 | 2019-04-30 | Whirlpool Corporation | Laundry treating appliance and methods of operation |
EP3162942B1 (de) | 2015-10-26 | 2021-06-30 | Electrolux Appliances Aktiebolag | Wäschebehandlungsmaschine und verfahren zur bestimmung der menge von wäsche, die in eine rotierende trommel einer wäschebehandlungsmaschine geladen wird |
US9873968B2 (en) | 2015-11-19 | 2018-01-23 | Whirlpool Corporation | Laundry treating appliance and methods of operation |
US10041202B2 (en) | 2015-11-19 | 2018-08-07 | Whirlpool Corporation | Laundry treating appliance and methods of operation |
US9885135B2 (en) | 2015-11-19 | 2018-02-06 | Whirlpool Corporation | Laundry treating appliance and methods of operation |
US9890490B2 (en) | 2015-11-19 | 2018-02-13 | Whirlpool Corporation | Laundry treating appliance and methods of operation |
US9988753B2 (en) | 2015-11-19 | 2018-06-05 | Whirlpool Corporation | Laundry treating appliance and methods of operation |
US9863080B2 (en) | 2015-11-19 | 2018-01-09 | Whirlpool Corporation | Laundry treating appliance and methods of operation |
DE102016223539A1 (de) * | 2016-11-28 | 2018-05-30 | Robert Bosch Gmbh | Schutzvorrichtung für ein elektrisches Antriebssystem, elektrisches Antriebssystem und Verfahren zum Betrieb eines elektrischen Antriebssystems |
CN110463028B (zh) * | 2017-01-30 | 2023-04-28 | 开利公司 | 对采用和不采用交织并联无源前端整流器进行控制的方法 |
CN110226286B (zh) | 2017-01-30 | 2024-02-02 | 开利公司 | 采用和不采用交织的并联无源前端整流器 |
US10619284B2 (en) | 2017-05-26 | 2020-04-14 | Whirlpool Corporation | Laundry treating appliance and method of operation |
DE102018211850A1 (de) * | 2018-07-17 | 2020-01-23 | Ziehl-Abegg Se | Verfahren zum Bewerten einer Betriebsbereitschaft eines Elektromotors sowie Elektromotor und Ventilator |
CN109358285B (zh) * | 2018-10-30 | 2021-11-05 | 铜仁职业技术学院 | 一种永磁无刷直流电机负载不平衡检测方法 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09253379A (ja) * | 1996-03-19 | 1997-09-30 | Toshiba Corp | 洗濯機 |
JPH11492A (ja) * | 1997-06-12 | 1999-01-06 | Yaskawa Electric Corp | 洗濯機 |
JP3879415B2 (ja) * | 2001-02-28 | 2007-02-14 | 株式会社日立製作所 | 洗濯機 |
JP4194312B2 (ja) | 2002-07-22 | 2008-12-10 | 株式会社東芝 | ドラム式洗濯機 |
DE10234053C1 (de) * | 2002-07-26 | 2003-11-20 | Diehl Ako Stiftung Gmbh & Co | Verfahren zum Bestimmen der Unwucht einer Wäschetrommel |
JP3962668B2 (ja) | 2002-09-24 | 2007-08-22 | 株式会社東芝 | ドラム式洗濯機 |
US7591038B2 (en) * | 2003-04-28 | 2009-09-22 | Emerson Electric Co., | Method and system for operating a clothes washing machine |
KR100550545B1 (ko) | 2003-09-04 | 2006-02-10 | 엘지전자 주식회사 | 세탁기의 포량 감지 방법 |
JP2006061357A (ja) | 2004-08-26 | 2006-03-09 | Matsushita Electric Ind Co Ltd | 洗濯機 |
US7739764B2 (en) * | 2005-04-27 | 2010-06-22 | Whirlpool Corporation | Method and apparatus for monitoring load size and load imbalance in washing machine |
JP4375447B2 (ja) * | 2007-06-26 | 2009-12-02 | パナソニック株式会社 | 洗濯機 |
-
2009
- 2009-03-02 DE DE200910001271 patent/DE102009001271A1/de not_active Withdrawn
-
2010
- 2010-02-18 US US13/254,004 patent/US9096964B2/en active Active
- 2010-02-18 EA EA201171093A patent/EA019472B1/ru not_active IP Right Cessation
- 2010-02-18 WO PCT/EP2010/052015 patent/WO2010100030A1/de active Application Filing
- 2010-02-18 EP EP20100711608 patent/EP2403986B1/de active Active
- 2010-02-18 CN CN201080010229.3A patent/CN102341538B/zh active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2010100030A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102009001271A1 (de) | 2010-09-09 |
US20110314875A1 (en) | 2011-12-29 |
EA201171093A1 (ru) | 2012-03-30 |
CN102341538A (zh) | 2012-02-01 |
US9096964B2 (en) | 2015-08-04 |
CN102341538B (zh) | 2014-06-25 |
EP2403986B1 (de) | 2012-11-21 |
EA019472B1 (ru) | 2014-03-31 |
WO2010100030A1 (de) | 2010-09-10 |
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