EP0704568B1 - Improvement in a washing machine with automatic determination of the weight of the wash load - Google Patents
Improvement in a washing machine with automatic determination of the weight of the wash load Download PDFInfo
- Publication number
- EP0704568B1 EP0704568B1 EP95112646A EP95112646A EP0704568B1 EP 0704568 B1 EP0704568 B1 EP 0704568B1 EP 95112646 A EP95112646 A EP 95112646A EP 95112646 A EP95112646 A EP 95112646A EP 0704568 B1 EP0704568 B1 EP 0704568B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drum
- washload
- speed
- motor
- machine
- 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.)
- Expired - Lifetime
Links
- 238000005406 washing Methods 0.000 title claims description 27
- 238000004364 calculation method Methods 0.000 claims description 2
- 238000009987 spinning Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000001133 acceleration Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 101150114468 TUB1 gene Proteins 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000008237 rinsing water Substances 0.000 description 1
Images
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
- 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
- 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
- D06F2105/48—Drum speed
Definitions
- the present invention refers to a clothes washing machine, particularly of the household type, provided with improved means for automatically determining the weight of the load of items to be washed.
- the present invention refers specially to clothes washing machines of the front-loading type, and for the sake of convenient exemplification the following description is actually referred to such a front-loading type of clothes washing machine, it will be appreciated that it may advantageously apply to other types of clothes washing machines as well, particularly to top-loading machines or machines having their drum rotating about an oblique axis.
- Clothes washing machines provided with means adapted to automatically identify the load of items to be washed are known in the art, wherein the term load, or washload, is used here and in the following description to solely mean the overall mass of the items to be washed, and not their nature or characteristics.
- the ability of the washing machine to recognize in an automatic manner each washload that is introduced in its drum for processing is a pre-requisite in view of the self-programming ability of the same machine, which will then be able to automatically define all of the parameters to be used in the washing process, such as the amount of detergent, the amount of water to be filled in, the number and the type of washing and rinsing phases to be performed, etc., so as to each time optimize the operation of the machine, while sparing the user the trouble of having to select each time the most suitable programme and in this way avoiding his or her quite frequently introducing in the process programming errors that prevent the machine from operating in optimum conditions.
- the measurement of the dry washload is performed by successively driving the drum holding the washload at two distinct, pre-determined speeds of rotation, while measuring both the time and the torque needed to reach the first one of said two speeds of rotation, as well as both the time and the torque needed to increase the speed of rotation of the drum from said first speed to a second pre-determined speed with a different motor torque.
- water is used to equally mean washing liquor or rinsing water.
- Such a simplification should not, however, affect the clearness and intelligibility of what is set forth in said description, owing to the context in which such terms are used, as anyone skilled in the art will readily appreciate.
- the described clothes washing machine comprises a washing tub 1, a drum 2 rotatably arranged within said washing tub and adapted to accomodate the washload 3, an electric motor 4 associated with said drum and adapted to drive it at variable, pre-selectable speeds of rotation.
- the washing machine is provided with a variable-speed motor and an arrangement adapted to deliver the information relating to the instantaneous speed of rotation of the drum (typically this is a tachometer, but any other device capable of delivering such an information would do for the job).
- appropriate devices capable of acquiring and delivering an information equivalent or corresponding to the output torque of the motor shall be provided accordingly.
- Such devices are generally known in the art and may be appropriately selected by those skilled in the art among the variety of existing solutions, such as for instance a peak-voltage detector and a phase-delay type motor control, or a circuit capable of integrating a current equivalent to the motor current, etc.
- a processing element (not shown) is further provided, in which following data are stored:
- the inertia of the washing machine without washload is determined automatically by the machine by performing the procedure under no load conditions, ie. without any washload introduced in the drum.
- a kind of self-calibration of each machine can in this way be performed so as to eliminate any manufacturing variable from the calculation of the weight of the washload.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITPN940058 | 1994-09-28 | ||
IT94PN000058A IT1267587B1 (it) | 1994-09-28 | 1994-09-28 | Lavabiancheria perfezionata con determinazione automatica del peso |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0704568A1 EP0704568A1 (en) | 1996-04-03 |
EP0704568B1 true EP0704568B1 (en) | 1998-12-30 |
Family
ID=11394950
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95112646A Expired - Lifetime EP0704568B1 (en) | 1994-09-28 | 1995-08-11 | Improvement in a washing machine with automatic determination of the weight of the wash load |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0704568B1 (es) |
JP (1) | JP3737170B2 (es) |
DE (1) | DE69506981T2 (es) |
ES (1) | ES2129162T3 (es) |
IT (1) | IT1267587B1 (es) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9863080B2 (en) | 2015-11-19 | 2018-01-09 | Whirlpool Corporation | Laundry treating appliance and methods of operation |
US9873968B2 (en) | 2015-11-19 | 2018-01-23 | 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 |
US9988751B2 (en) | 2015-07-29 | 2018-06-05 | Whirlpool Corporation | Laundry treating appliance and methods of reducing tub contact therein |
US9988753B2 (en) | 2015-11-19 | 2018-06-05 | 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 |
US10273621B2 (en) | 2015-10-01 | 2019-04-30 | Whirlpool Corporation | Laundry treating appliance and methods of operation |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2181879C (en) * | 1995-07-24 | 2002-04-23 | Jonathan David Harwood | Water level determination for laundry washing machine |
KR100504486B1 (ko) * | 2002-12-10 | 2005-08-03 | 엘지전자 주식회사 | 드럼세탁기의 포량 감지방법 |
BR0300737A (pt) * | 2003-03-13 | 2004-11-16 | Multibras Eletrodomesticos Sa | Sistema e processo para detecção de carga de roupa em máquina lavadora automática |
ATE541076T1 (de) * | 2004-03-01 | 2012-01-15 | Arcelik As | Verfahren zur bestimmung der ladung |
EP2094893B1 (en) * | 2006-10-31 | 2011-09-14 | Arçelik Anonim Sirketi | Method for determining weight of the load in a washer dryer using the natural frequency response of the loaded drum |
US7958584B2 (en) * | 2008-02-15 | 2011-06-14 | General Electric Company | Load size measuring apparatus and method |
CN101526388B (zh) * | 2008-03-03 | 2012-03-07 | 海尔集团公司 | 一种滚筒洗衣机自动称重的方法 |
IT1393158B1 (it) * | 2008-10-08 | 2012-04-11 | Appliances Components Companies Spa | Motore elettrico controllato e integrato |
US8166590B2 (en) | 2009-04-16 | 2012-05-01 | Whirlpool Corporation | Method and apparatus for determining laundry load size |
US8631527B2 (en) | 2009-08-10 | 2014-01-21 | Whirlpool Corporation | Laundry treating appliance with tumble pattern control |
US8914930B2 (en) | 2010-04-13 | 2014-12-23 | Whirlpool Corporation | Laundry treating appliance with load amount detection |
JP6437188B2 (ja) * | 2013-11-06 | 2018-12-12 | 三星電子株式会社Samsung Electronics Co.,Ltd. | 洗濯機 |
WO2017144085A1 (en) * | 2016-02-23 | 2017-08-31 | Electrolux Appliances Aktiebolag | Method for the determination of a laundry weight in a laundry treatment appliance |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2553881B1 (fr) * | 1983-10-25 | 1987-11-20 | Esswein Sa | Procede de determination d'une charge de linge dans un tambour tournant, et machine a laver et/ou a secher mettant en oeuvre ce procede |
FR2650844B1 (fr) * | 1989-07-28 | 1991-10-11 | Ciapem | Lave-linge ou seche-linge dans lequel la charge de linge est determinee de facon automatique |
NZ248097A (en) * | 1989-08-30 | 1996-10-28 | Fisher & Paykel | Measuring liquid level in laundry machine by monitoring resistance of wash bowl to rotation |
US5161393A (en) | 1991-06-28 | 1992-11-10 | General Electric Company | Electronic washer control including automatic load size determination, fabric blend determination and adjustable washer means |
IT1256270B (it) * | 1991-10-11 | 1995-11-29 | Zanussi Elettrodomestici | Procedimento di misurazione del peso della biancheria per macchina lavatrice di biancheria. |
-
1994
- 1994-09-28 IT IT94PN000058A patent/IT1267587B1/it active IP Right Grant
-
1995
- 1995-08-11 EP EP95112646A patent/EP0704568B1/en not_active Expired - Lifetime
- 1995-08-11 ES ES95112646T patent/ES2129162T3/es not_active Expired - Lifetime
- 1995-08-11 DE DE69506981T patent/DE69506981T2/de not_active Expired - Lifetime
- 1995-09-28 JP JP25152395A patent/JP3737170B2/ja not_active Expired - Fee Related
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
US11739466B2 (en) | 2015-10-01 | 2023-08-29 | Whirlpool Corporation | Laundry treating appliance and methods of operation |
US11486074B2 (en) | 2015-10-01 | 2022-11-01 | Whirlpool Corporation | Laundry treating appliance and methods of operation |
US10669663B2 (en) | 2015-10-01 | 2020-06-02 | 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 |
US9863080B2 (en) | 2015-11-19 | 2018-01-09 | Whirlpool Corporation | Laundry treating appliance and methods of operation |
US10087565B2 (en) | 2015-11-19 | 2018-10-02 | 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 |
US10301762B2 (en) | 2015-11-19 | 2019-05-28 | 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 |
US9885135B2 (en) | 2015-11-19 | 2018-02-06 | Whirlpool Corporation | Laundry treating appliance and methods of operation |
US9873968B2 (en) | 2015-11-19 | 2018-01-23 | Whirlpool Corporation | Laundry treating appliance and methods of operation |
Also Published As
Publication number | Publication date |
---|---|
ES2129162T3 (es) | 1999-06-01 |
ITPN940058A0 (it) | 1994-09-28 |
JPH08107990A (ja) | 1996-04-30 |
EP0704568A1 (en) | 1996-04-03 |
JP3737170B2 (ja) | 2006-01-18 |
DE69506981D1 (de) | 1999-02-11 |
IT1267587B1 (it) | 1997-02-07 |
DE69506981T2 (de) | 1999-08-05 |
ITPN940058A1 (it) | 1996-03-28 |
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