EP2935675A1 - A method for controlling a washing machine for washing particular items - Google Patents

A method for controlling a washing machine for washing particular items

Info

Publication number
EP2935675A1
EP2935675A1 EP13831866.2A EP13831866A EP2935675A1 EP 2935675 A1 EP2935675 A1 EP 2935675A1 EP 13831866 A EP13831866 A EP 13831866A EP 2935675 A1 EP2935675 A1 EP 2935675A1
Authority
EP
European Patent Office
Prior art keywords
drum
speed
exceeding
rpm
washing
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
EP13831866.2A
Other languages
German (de)
French (fr)
Other versions
EP2935675B1 (en
EP2935675B8 (en
Inventor
Laura STANZIONE
Giuliana Latini
Danilo Cascia
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.)
Whirlpool EMEA SpA
Original Assignee
Indesit Co SpA
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 Indesit Co SpA filed Critical Indesit Co SpA
Priority to PL13831866T priority Critical patent/PL2935675T3/en
Publication of EP2935675A1 publication Critical patent/EP2935675A1/en
Publication of EP2935675B1 publication Critical patent/EP2935675B1/en
Application granted granted Critical
Publication of EP2935675B8 publication Critical patent/EP2935675B8/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • D06F35/00—Washing machines, apparatus, or methods not otherwise provided for
    • D06F35/005—Methods for washing, rinsing or spin-drying
    • D06F35/006—Methods for washing, rinsing or spin-drying for washing or rinsing only

Definitions

  • the object of the present invention is a method for controlling washing of particular garments in a Washing Machine.
  • some kind garments as for example jackets, some trousers, clothes and so on, are generally dry cleaned or at least washed in industrial washing machine. This because they are particularly delicate garments which can be irremediable damaged with a traditional washing program.
  • the aim of the present invention is to provide a control mode of a washing machine that allows the washing of delicate garments such as trousers, jackets, dresses etc.. without industrial washing machine.
  • the basic idea of the present invention is to provide a wash cycle whose temperatures are constantly kept at low heat and in which, the rotational movements of the garments inside the drum of the machine, are quite soft, and in the meantime a considerable amount of water is used.
  • object of the present invention is a method for controlling a washing machine comprising the execution of a wash cycle wherein:
  • an initial warming of the wash water is performed up to a reference temperature not exceeding 25° C;
  • a spin is then carried out with a speed not exceeding 100 rpm in order to obtain a satellization of the garments in the drum.
  • At least a rinse step is performed, and preferably two rinse steps are performed.
  • the rotational movements of said drum last for a time comprised between 2 and 5 seconds.
  • the rotational movements of said drum are alternated to steps wherein said drum is substantially motionless.
  • the steps in which said drum is substantially motionless last for a time comprised between 20 and 40 seconds.
  • the speed of rotation of said spin is below 90 rpm.
  • each rinse step is followed by a step wherein said drum rotates at a speed not exceeding 35 rpm.
  • the control method, object of the present invention comprises, first of all, the step of providing a quantity of water of at least 20 litres, loaded in the drum of the washing machine.
  • the amount of water can be equal to 23 litres.
  • the water is later heated until a not particularly hot temperature, for example less ore equal to 25°C.
  • a series of rotational movements of the machine drum are then performed at a speed not exceeding 35 rpm;
  • the rotation movements of said drum are advantageously alternated to steps wherein said drum is substantially motionless.
  • the steps wherein the drum is motionless go on, at least 7-8 times longer than the ones of the rotational movements.
  • the rotational movements of said drum last for a time comprised between 2 and 5 seconds and the steps in which said drum is substantially motionless last for a time comprised between 20 and 40 seconds.
  • the series of rotational movements of the drum for example, can have a duration of between 30 and 35 minutes, while the entire wash cycle can last up to 100 minutes about.
  • one or more rinsing steps are performed after said rotational movements of the drum.
  • two rinsing steps can be performed.
  • each rinse step is followed by a step where the drum is rotated at a speed not exceeding 35 rpm.
  • the speed of rotation of the spin is below 90 rpm, for example is equal to 88 rpm.
  • the spinning step is performed at a speed equal to, or very close, to the minimum speed, so that, the spin force used is able to balance the force of gravity acting on the garments in the drum. In this way the laundry can be driven in rotation without suffering too intense mechanical stress which could damage its quality.
  • This quantity may be, for example, less than 2 kg, and in particular not more than 1.5 Kg.
  • Figure 1 shows explicative charts representing the execution of the washing method according to the invention.
  • the horizontal axis represents time
  • the ordinate axis represents the water consumption of the machine (A)
  • the electrical power absorbed by the machine (B) the wash water temperature (C) and the speed of rotation of the drum (D).
  • Al is the water loaded at the start of washing
  • A2 and A3 identify the rinse steps performed at the end of the cycle.
  • Dl identifies the number of rotational movements at reduced speed
  • D2 identifies the movements associated with the rinse steps
  • D3 the final step of spin/satellization.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Abstract

Method for controlling a washing machine comprising the execution of a wash cycle wherein: an amount of water of at least 20 litres is loaded in the machine's drum; an initial warming of the wash water is performed up to a reference temperature not exceeding 25° C; a series of rotational movements of said drum are then performed at a speed not exceeding 35 rpm;a spin is then carried out with a speed not exceeding 100 rpm in order to obtain a satellization of the garments in the drum.

Description

A METHOD FOR CONTROLLING A WASHING MACHINE FOR WASHING PARTICULAR ITEMS
DESCRIPTION
(Field of the invention)
The object of the present invention is a method for controlling washing of particular garments in a Washing Machine.
(Background art)
As known, some kind garments, as for example jackets, some trousers, clothes and so on, are generally dry cleaned or at least washed in industrial washing machine. This because they are particularly delicate garments which can be irremediable damaged with a traditional washing program.
It clearly causes some problems for people who need to wash this delicate cloths: take them to the laundry and then go back to withdraw them after washing and ironing.
This is a drawback both under the point of view of comfortbecause to travel continuously to the laundry may not always be easy, and because it would be too much expensive to wash clothes in the laundry frequently.
(Object and summary of the invention)
The aim of the present invention is to provide a control mode of a washing machine that allows the washing of delicate garments such as trousers, jackets, dresses etc.. without industrial washing machine.
This and other objects are achieved by a method for controlling a washing machine comprising the execution of a wash cycle as described in the appended claims.
The basic idea of the present invention is to provide a wash cycle whose temperatures are constantly kept at low heat and in which, the rotational movements of the garments inside the drum of the machine, are quite soft, and in the meantime a considerable amount of water is used.
In this way the Applicant believes achievable very satisfying results with reference to particular garments as previously said.
In particular object of the present invention is a method for controlling a washing machine comprising the execution of a wash cycle wherein:
- an amount of water of at least 20 litres is loaded in the machine's drum;
- an initial warming of the wash water is performed up to a reference temperature not exceeding 25° C;
- a series of rotational movements of said drum are then performed at a speed not exceeding 35 rpm;
- a spin is then carried out with a speed not exceeding 100 rpm in order to obtain a satellization of the garments in the drum.
Preferably before said spin, and particularly after said series of rotational movements of said drum, at least a rinse step is performed, and preferably two rinse steps are performed.
Preferably the rotational movements of said drum last for a time comprised between 2 and 5 seconds.
Preferably the rotational movements of said drum are alternated to steps wherein said drum is substantially motionless.
Preferably the steps in which said drum is substantially motionless last for a time comprised between 20 and 40 seconds.
Preferably the speed of rotation of said spin is below 90 rpm.
Preferably each rinse step is followed by a step wherein said drum rotates at a speed not exceeding 35 rpm.
(Brief description of the drawings)
Some examples of preferred and advantageous embodiments are described for purely illustrative and not limiting purposes , with reference to the appended Figure 1 , which shows a representative diagram of some features of the mode according to the invention.
(Detailed description of the invention)
The control method, object of the present invention, comprises, first of all, the step of providing a quantity of water of at least 20 litres, loaded in the drum of the washing machine.
As an example, the amount of water can be equal to 23 litres.
The water is later heated until a not particularly hot temperature, for example less ore equal to 25°C.
A series of rotational movements of the machine drum are then performed at a speed not exceeding 35 rpm;
The rotation movements of said drum are advantageously alternated to steps wherein said drum is substantially motionless.
In the preferred embodiment, the steps wherein the drum is motionless, go on, at least 7-8 times longer than the ones of the rotational movements.
For example the rotational movements of said drum last for a time comprised between 2 and 5 seconds and the steps in which said drum is substantially motionless last for a time comprised between 20 and 40 seconds.
The features so far described allow to keep the garments in a condition of substantial floating inside the drum (thanks to the considerable amount of water loaded), and to practice a mechanical action on the same, due to the short rotational movements at reduced speed of the drum.
In this way it is possible to obtain for delicate garments, satisfactory washing without causing any kind of damage.
Note that even the washing time contributes to the result above described: the series of rotational movements of the drum, for example, can have a duration of between 30 and 35 minutes, while the entire wash cycle can last up to 100 minutes about.
Preferably, after said rotational movements of the drum, one or more rinsing steps are performed. In particular, two rinsing steps can be performed.
Preferably each rinse step is followed by a step where the drum is rotated at a speed not exceeding 35 rpm.
Finally, after the series of rotational movements of the drum, particularly after the rinse steps, a spin is carried out with a reduced speed not exceeding 100 rpm, in order to obtain a satellization of the garments in the drum.
According to this control method, the speed of rotation of the spin is below 90 rpm, for example is equal to 88 rpm.
In more detail, the spinning step is performed at a speed equal to, or very close, to the minimum speed, so that, the spin force used is able to balance the force of gravity acting on the garments in the drum. In this way the laundry can be driven in rotation without suffering too intense mechanical stress which could damage its quality.
In order to perform a wash cycle in an appropriate way, in the drum is placed a limited amount of clothes. This quantity may be, for example, less than 2 kg, and in particular not more than 1.5 Kg.
Figure 1 shows explicative charts representing the execution of the washing method according to the invention.
The horizontal axis represents time, the ordinate axis represents the water consumption of the machine (A), the electrical power absorbed by the machine (B), the wash water temperature (C) and the speed of rotation of the drum (D).
With reference to the water consumption, Al is the water loaded at the start of washing, A2 and A3 identify the rinse steps performed at the end of the cycle.
The electrical power absorption in an early phase (line B) is necessary for the heating of the washing water up to the set temperature.
With reference to the temperature (line C) it can be noted an initial increase, a period of substantially constant temperature (during the series of movement of the drum) and a progressive decrease at the end of the cycle.
With reference to the drum rotational speed, Dl identifies the number of rotational movements at reduced speed, D2 identifies the movements associated with the rinse steps, and D3 the final step of spin/satellization.

Claims

1. A method for controlling a washing machine comprising the execution of a wash cycle wherein:
an amount of water of at least 20 litres is prepared in the drum of the machine; an initial warming of the wash water is performed, up to a reference temperature not exceeding 25°C;
a series of rotational movements of said drum are then performed at a speed not exceeding 35 rpm;
a spin is then carried out with a speed not exceeding 100 rpm thus obtaining a satellization of the laundry in the drum.
2. A method according to claim 1 wherein before said spin, and preferably after said series of rotation movements of said drum, at least a rinse step is performed, and preferably two rinse steps are performed.
3. A method according to claim 1 or 2, wherein the rotation movements of said drum last for a time comprised between 2 and 5 seconds.
4. A method according to any one of the preceding claims wherein the rotation movements of said drum are alternated to steps wherein said drum is substantially motionless.
5. A method according to claim 4, wherein the steps in which said drum is substantially motionless last for a time comprised between 20 and 40 seconds.
6. Method according to any one of the preceding claims, wherein the speed of rotation of said spin is below 90 rpm.
7. A method according to claim 2 or any one of the claims 3 to 6 when dependent from claim 2 wherein each rinse step is followed by a step wherein said drum rotates at a speed not exceeding 35 rpm.
8. Laundry washing machine comprising:
a. operating means for executing at least one wash cycle;
b. a control unit active on said operating means to control operation of the same;
wherein said control unit is configured to execute, in cooperation with said operating means, the method according to any one of the preceding claims.
EP13831866.2A 2012-12-19 2013-12-18 A method for controlling a washing machine for washing particular items Active EP2935675B8 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL13831866T PL2935675T3 (en) 2012-12-19 2013-12-18 A method for controlling a washing machine for washing particular items

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT001108A ITTO20121108A1 (en) 2012-12-19 2012-12-19 METHOD OF CONTROL OF A WASHING MACHINE FOR THE WASHING OF SPECIAL ITEMS
PCT/IB2013/061077 WO2014097166A1 (en) 2012-12-19 2013-12-18 A method for controlling a washing machine for washing particular items

Publications (3)

Publication Number Publication Date
EP2935675A1 true EP2935675A1 (en) 2015-10-28
EP2935675B1 EP2935675B1 (en) 2017-02-01
EP2935675B8 EP2935675B8 (en) 2017-04-12

Family

ID=47633442

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13831866.2A Active EP2935675B8 (en) 2012-12-19 2013-12-18 A method for controlling a washing machine for washing particular items

Country Status (5)

Country Link
EP (1) EP2935675B8 (en)
IT (1) ITTO20121108A1 (en)
PL (1) PL2935675T3 (en)
RU (1) RU2641432C2 (en)
WO (1) WO2014097166A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3279384A1 (en) * 2016-08-04 2018-02-07 The Procter & Gamble Company Process for washing fabrics
EP3279385A1 (en) 2016-08-04 2018-02-07 The Procter & Gamble Company Process for washing fabrics

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB840518A (en) * 1956-10-26 1960-07-06 Jakob Rothenberger Washing process for textile fabrics
DE1760985B1 (en) * 1968-07-29 1970-10-01 Holzer Patent Ag Control device for automatic washing machines with biological washing programs
GB2074612B (en) * 1980-04-16 1985-11-20 Servis Domestic Appliances Ltd Washing textile articles
WO2009058121A1 (en) * 2006-11-06 2009-05-07 Su Heon Kim Improved washer method and apparatus
US8490440B2 (en) * 2007-05-07 2013-07-23 Whirlpool Corporation Timing control and timed wash cycle for an automatic washer

Also Published As

Publication number Publication date
ITTO20121108A1 (en) 2014-06-20
RU2641432C2 (en) 2018-01-17
RU2015125800A (en) 2017-01-24
EP2935675B1 (en) 2017-02-01
EP2935675B8 (en) 2017-04-12
WO2014097166A1 (en) 2014-06-26
PL2935675T3 (en) 2017-06-30

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