EP1988206A1 - Waschmaschine mit verbessertem Sensor für das Beladungsgewicht - Google Patents

Waschmaschine mit verbessertem Sensor für das Beladungsgewicht Download PDF

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Publication number
EP1988206A1
EP1988206A1 EP07107413A EP07107413A EP1988206A1 EP 1988206 A1 EP1988206 A1 EP 1988206A1 EP 07107413 A EP07107413 A EP 07107413A EP 07107413 A EP07107413 A EP 07107413A EP 1988206 A1 EP1988206 A1 EP 1988206A1
Authority
EP
European Patent Office
Prior art keywords
casing
springs
washing machine
excursion
elastic means
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
Application number
EP07107413A
Other languages
English (en)
French (fr)
Other versions
EP1988206B1 (de
Inventor
Stefano Casagrande
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.)
Electrolux Home Products Corp NV
Original Assignee
Electrolux Home Products Corp NV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Electrolux Home Products Corp NV filed Critical Electrolux Home Products Corp NV
Priority to AT07107413T priority Critical patent/ATE500374T1/de
Priority to EP07107413A priority patent/EP1988206B1/de
Priority to DE602007012838T priority patent/DE602007012838D1/de
Priority to ES07107413T priority patent/ES2358541T3/es
Priority to PL07107413T priority patent/PL1988206T3/pl
Priority to RU2008117471/12A priority patent/RU2453642C2/ru
Publication of EP1988206A1 publication Critical patent/EP1988206A1/de
Application granted granted Critical
Publication of EP1988206B1 publication Critical patent/EP1988206B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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    • 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
    • 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

Definitions

  • the present invention refers to a washing machine, such as a clothes washing machine or a combined clothes washing and drying machine, provided with means adapted to measure the weight of the clothes loaded in a washing assembly that is suspended elastically to the framework of the machine with the aid of spring means such as vibration dampers or the like.
  • the patent GB 2087438 divulgates a conventional solution, in which the washing machine is provided with a washing tub mounted with sensor and transducer means providing an information on the tub weight, and, by subtraction, on the washing load weight.
  • EP 1264925 divulgates a washing machine with a cabinet, provided with supporting feet, and lodging a washing assembly elastically suspended to the machine structure through at least a damper, and comprising at least a displacement sensor of said washing assembly, wherein said sensor is interposed between said dumper and the machine structure, upstream of said supporting feet, in such a way to detect the weight variations of the washing assembly independently of the damper braking force and of the machine weight.
  • the load weight is normally only a small fraction of the tub overall weight, drum included, and so the obvious variations in the actual tub weight, due to a natural variations of the various constructive factors which are unavoidably involved, and whose overall amount is really unknown, prevents a precise exact load measurement, whose actual value is being as "masked" by said variations.
  • the washing machine is comprising an outer casing 1 that houses an oscillating tub 2 which is elastically suspended to the framework of the washing machine by means of springs 3 and 4, which elastically support said tub with respect to said casing in a known way, and a damping strut 5 placed between an outer portion 6 of said tub and an anchoring point 5A whose exact position is here explained:
  • said casing 1 is provided on its lower portion with a couple of springs 7, 8 which are preferably spiralled shaped, are independent, in the meaning that they are distinct, aligned, vertically oriented, and connected to each other by the two respectively facing sides 7B, 8B.
  • An horizontally extending position arm 11 is connected to said two opposite sides 7B, 8B of said two springs 7, 8 which then coincide in the same physical point ,even if its position is variable.
  • Said anchoring point 5A of said damping strut 5 is identified on said position arm 11.
  • a means 12 to measure the excursion is being mounted between said position arm 11 and a different specific point 13 of said cabinet; said means 12 is vertically placed below or above said arm 11; said measurement means may be any type among a number of types which are available in the prior art and, being not a part of the instant invention, is not further explained.
  • the information generated by said measurement means 12, and which detects the vertical position of said two facing sides 7B and 8B is sent to a command and control unit, not shown, able of processing the signals received according to the following logic:
  • the tub/drum assembly net weight is supported by the overall action of said springs 3 and 4 and by said springs 7 and 8; however said springs 7 and 8 reciprocally settle in an equilibrium position, spontaneously reacting to the force therein driven.
  • the invention ultimate purpose is achieved, consisting in using a position sensor which is reliable, and still very cheap.
  • the relevant tub position is duly detected and taken as a reference position by the sensor 12.
  • the second improvement consists in the fact (see fig. 3 ), that the braking action on the tub 1 is using not one damping strut 5 only, but two separate dampers 5 and 50,which are placed in respective positions which are basically symmetrical with respect to a vertical plane passing through the same tub centre; of course in such a case the second damper 50 is provided with a respective couple of springs 70 and 80, and with a relevant position arm 110, and of with associated devices, in a substantially symmetrical way to what applicable to the first damper 5, with exception that no related position sensor is associated to said second damper 50.
  • Such an improvement allows to balance the tub behaviour during the operation, and mainly during the initial steps for tub alignment, with the tub empty, and for the successive wash-load weighting.
  • the third improvement consists in providing said springs 7, 8 with an initial total force which is smaller, but only a little smaller, of the initial friction force of the damper; with ref. to fig. 4 , it is desirable that the friction force "fa" be stronger than the reaction force "fr" of said springs so that the excursion, from which the was-load weight is measured, be the widest possible, even if it has to be limited by the existing costs constraints.
  • a fourth improvement consists in providing the washing machine with suitable command and control means able of automatically carrying out said rotation step of the drum, as soon as the machine is being switched on; moreover at this time the drum is being automatically blocked in closing position.
  • the fifth improvement consists in making said couples of springs 7, 8 and 70, 80, as if a sole spring showing the same features and working properties of the respective two springs it is intended to substitute.
  • the relevant position arm may be therefore connected in a solid manner to a proper intermediate portion of said sole spring, using connecting means well known in the art.
  • a further improvement is represented in fig. 6 ; there is shown that the springs, which are used in the invention, are two separate, independent and vertically aligned springs 77, 88 with a respective facing sides 77B and 88B; said facing sides are connected to a support base 79, which is solidly linked to said casing 1.
  • the two opposite sides 77A and 88A of said springs are inter-connected by a rod 83, sliding inside said support base 79, without interfering with them, so as, if the end side 77A or 88A is being pressed, or axially pulled, said force is automatically transferred to the other spring, which is forced by a kind of stress which is exactly the contrary, as one can easily imagine.
  • the position arm 11 is placed in the common position of the anchoring point 5A of the dumping strut 5 with the corresponding outer side 77A of the spring 77; of course even in this case the position sensor 12 is applied between said arm 11 and a point 130 firm to the casing 1.
  • a base element 50 is provided, which is shaped as a flat plate and formed with an empty , i.e. deprived of material, inner zone 51; a flat portion 52 protrudes out from an internal edge 53 of said base element and extends inside said inner zone 51.
  • said portion 52 projects into said inner empty zone 51, however basically laying on the same plane.
  • the damper 5 is connected with its higher portion with the outer portion 6 of said tub 2, as in the previously described case, while its lower portion 54 is connected to a point 55 of the outer edge of said flat portion 52.
  • the excursion sensor 12 is connected to the ring-shaped portion of said base element 50, and is normally provided with a touching finger 18; according to the present embodiment, the central body of said sensor 12 is firmly connected to a point 14 placed in the outer ring-shaped zone of said base element 50, while the lower end of said touching finger 18 is applied against a position 16 of said flat portion which comprises the position arm 11 as previously defined; as a matter of facts, in the present case said flat portion is working both as said arm 11, and as said two springs.
  • said position 16 is placed close to the edge which is the farthest from said internal edge 53 on which said flat portion 52 is fixed.
  • Said base element is finally firmly connected to the machine frame, and particularly to its pedestal.
  • said portion 52 is made of a flexible material, whose said edge 16 can be elastically bended both upwards and downwards.
  • said portion 52 can assume a defined resting position, when it is being forced vertically, up or down, it tends to elastically return to said resting position, which is here assumed as a reference position with the drum empty.
  • said elastic flat portion 52 and as a consequence said excursion sensor 12, will provide an information which is a true function of the actual wash-load weight.
EP07107413A 2007-05-03 2007-05-03 Waschmaschine mit verbessertem Sensor für das Beladungsgewicht Not-in-force EP1988206B1 (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
AT07107413T ATE500374T1 (de) 2007-05-03 2007-05-03 Waschmaschine mit verbessertem sensor für das beladungsgewicht
EP07107413A EP1988206B1 (de) 2007-05-03 2007-05-03 Waschmaschine mit verbessertem Sensor für das Beladungsgewicht
DE602007012838T DE602007012838D1 (de) 2007-05-03 2007-05-03 Waschmaschine mit verbessertem Sensor für das Beladungsgewicht
ES07107413T ES2358541T3 (es) 2007-05-03 2007-05-03 Máquina lavadora con perceptor mejorado del peso de la carga.
PL07107413T PL1988206T3 (pl) 2007-05-03 2007-05-03 Pralka z ulepszonym czujnikiem wagi załadunku
RU2008117471/12A RU2453642C2 (ru) 2007-05-03 2008-04-30 Стиральная машина с датчиком веса загрузки

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07107413A EP1988206B1 (de) 2007-05-03 2007-05-03 Waschmaschine mit verbessertem Sensor für das Beladungsgewicht

Publications (2)

Publication Number Publication Date
EP1988206A1 true EP1988206A1 (de) 2008-11-05
EP1988206B1 EP1988206B1 (de) 2011-03-02

Family

ID=38543883

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07107413A Not-in-force EP1988206B1 (de) 2007-05-03 2007-05-03 Waschmaschine mit verbessertem Sensor für das Beladungsgewicht

Country Status (6)

Country Link
EP (1) EP1988206B1 (de)
AT (1) ATE500374T1 (de)
DE (1) DE602007012838D1 (de)
ES (1) ES2358541T3 (de)
PL (1) PL1988206T3 (de)
RU (1) RU2453642C2 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2322705A1 (de) * 2009-11-16 2011-05-18 Samsung Electronics Co., Ltd. Waschmaschine und Vorrichtung zur Erkennung der Wäschemenge
CN102191656A (zh) * 2010-03-05 2011-09-21 三星电子株式会社 洗衣机
JP2014068792A (ja) * 2012-09-28 2014-04-21 Toshiba Corp ドラム式洗濯機
RU2523994C1 (ru) * 2013-07-23 2014-07-27 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Южно-Российский государственный университет экономики и сервиса" (ФГБОУ ВПО "ЮРГУЭС") Стиральная машина барабанного типа
CN104746283B (zh) * 2013-12-25 2017-01-04 海尔集团技术研发中心 一种家用干洗机及控制方法
CN107503742A (zh) * 2017-07-21 2017-12-22 四川达灿石油设备有限公司 适用于石油勘探钻井的定位装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101658226B1 (ko) * 2009-11-16 2016-09-21 삼성전자주식회사 세탁기 및 그 제어방법

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29812393U1 (de) * 1998-07-11 1999-11-18 Aeg Hausgeraete Gmbh Programmgesteuerte Waschmaschine
EP1258556A1 (de) * 2001-05-10 2002-11-20 Miele & Cie. GmbH & Co. Waschmaschine mit einer Einrichtung und Verfahren zur Bestimmung des Wäschegewichts
EP1264925A2 (de) * 2001-06-08 2002-12-11 Electrolux Home Products Corporation N.V. Waschmaschine mit einem Gewichtserfassungsmittel

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04500474A (ja) * 1989-05-03 1992-01-30 ベーエスゲー―シャルトテヒニク　ゲゼルシャフト　ミット　ベシュレンクテル　ハフツング　ウント　コンパニー　コマンディト　ゲゼルシャフト 洗濯機
DE4336350A1 (de) * 1993-10-25 1995-04-27 Bosch Siemens Hausgeraete Verfahren zum Bestimmen der Wäschemenge in einer Wäschebehandlungsmaschine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29812393U1 (de) * 1998-07-11 1999-11-18 Aeg Hausgeraete Gmbh Programmgesteuerte Waschmaschine
EP1258556A1 (de) * 2001-05-10 2002-11-20 Miele & Cie. GmbH & Co. Waschmaschine mit einer Einrichtung und Verfahren zur Bestimmung des Wäschegewichts
EP1264925A2 (de) * 2001-06-08 2002-12-11 Electrolux Home Products Corporation N.V. Waschmaschine mit einem Gewichtserfassungsmittel

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2322705A1 (de) * 2009-11-16 2011-05-18 Samsung Electronics Co., Ltd. Waschmaschine und Vorrichtung zur Erkennung der Wäschemenge
RU2466226C2 (ru) * 2009-11-16 2012-11-10 Самсунг Электроникс Ко., Лтд. Стиральная машина и ее устройство для определения количества белья
US8776552B2 (en) 2009-11-16 2014-07-15 Samsung Electronics Co., Ltd. Washing machine and laundry amount detection device thereof
CN102191656A (zh) * 2010-03-05 2011-09-21 三星电子株式会社 洗衣机
EP2363525A3 (de) * 2010-03-05 2013-06-05 Samsung Electronics Co., Ltd. Waschmaschine und Vorrichtung zur Erkennung der Wäschemenge dafür
JP2014068792A (ja) * 2012-09-28 2014-04-21 Toshiba Corp ドラム式洗濯機
RU2523994C1 (ru) * 2013-07-23 2014-07-27 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Южно-Российский государственный университет экономики и сервиса" (ФГБОУ ВПО "ЮРГУЭС") Стиральная машина барабанного типа
CN104746283B (zh) * 2013-12-25 2017-01-04 海尔集团技术研发中心 一种家用干洗机及控制方法
CN107503742A (zh) * 2017-07-21 2017-12-22 四川达灿石油设备有限公司 适用于石油勘探钻井的定位装置

Also Published As

Publication number Publication date
ATE500374T1 (de) 2011-03-15
RU2453642C2 (ru) 2012-06-20
EP1988206B1 (de) 2011-03-02
ES2358541T3 (es) 2011-05-11
RU2008117471A (ru) 2009-11-10
PL1988206T3 (pl) 2011-08-31
DE602007012838D1 (de) 2011-04-14

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