EP2483463A1 - A washing machine with improved rinsing and spin-drying performances - Google Patents

A washing machine with improved rinsing and spin-drying performances

Info

Publication number
EP2483463A1
EP2483463A1 EP10757789A EP10757789A EP2483463A1 EP 2483463 A1 EP2483463 A1 EP 2483463A1 EP 10757789 A EP10757789 A EP 10757789A EP 10757789 A EP10757789 A EP 10757789A EP 2483463 A1 EP2483463 A1 EP 2483463A1
Authority
EP
European Patent Office
Prior art keywords
spin
water
washing machine
drying
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
EP10757789A
Other languages
German (de)
French (fr)
Other versions
EP2483463B1 (en
Inventor
Murat Cemal Dora
Aysegul Ayday Besikci
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.)
Arcelik AS
Original Assignee
Arcelik AS
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 Arcelik AS filed Critical Arcelik AS
Publication of EP2483463A1 publication Critical patent/EP2483463A1/en
Application granted granted Critical
Publication of EP2483463B1 publication Critical patent/EP2483463B1/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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30—Driving arrangements 
    • D06F37/36—Driving arrangements  for rotating the receptacle at more than one speed
    • D06F37/38—Driving arrangements  for rotating the receptacle at more than one speed in opposite directions
    • 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

Definitions

  • the present invention relates to a washing machine the rinsing and
  • the rinsing/spin-drying performance of the washing machine is adversely affected when the load capacity is exceeded or when loaded with the type of laundry absorbing plenty of water for example such as towels, bathrobes, 100 % cotton clothes or when more detergent than required is used, as a result the laundry contains detergent residue at the end of the washing program.
  • the aim of the present invention is the realization of a washing machine the rinsing and spin-drying performances of which are improved.
  • the washing machine realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof, comprises a control unit which provides to execute the water releasing step wherein water is discharged gradually, and wherein the drum is rotated in the washing speed at least once in clockwise and at least once in counterclockwise direction at certain intervals after the main washing step and the following water discharge process, before the spin-drying and rinsing step, and which executes a gradual spin-drying step wherein the drum is rotated successively, for a short time, at a speed significantly much lower than the spin-drying step of the drum but at a speed greater than the resonance speed.
  • the water releasing step lasts approximately for 5 minutes.
  • the discharge pump is
  • the water removed from the laundry at the end of the water releasing step is provided to be discharged by operating the discharge pump between the water releasing and the gradual spin-drying steps.
  • the spin speed in the gradual spin-drying step is executed at between 300 to 400 rpm.
  • the water releasing step is executed after clean water is taken. Consequently, foam reducing and discharge of detergent is improved.
  • the adverse effect on the rinsing and spin-drying performance of the washing machine is minimized when the load capacity is exceeded, when the laundry type that absorbs plenty of water is loaded or when more detergent than required is used.
  • Figure 1 - is the perspective view of a washing machine.
  • Figure 2 - is the speed - time graph of the washing program in the prior art.
  • Figure 3 - is the speed - time graph of the washing program in the
  • the washing machine (1 ) of the present invention comprises a drum (2) wherein the laundry to be washed is placed, and a control unit (3) which executes the washing program, consisting of main washing, rinsing and spin-drying steps, at the spin speed determined by the producer according to the washing program that is selected by the user ( Figure 1 ).
  • the control unit (3) provides the execution of a water releasing step (A) wherein water is discharged gradually, wherein the drum (2) is rotated in the washing speed at least once in clockwise and at least once in counterclockwise direction at certain intervals after the main washing step and the following water discharge process, before the spin-drying and rinsing steps, and afterwards provides the execution of a gradual spin-drying step (B) wherein the drum (2) is rotated successively, for a short time, at a speed significantly much lower than the spin-drying step of the drum (2) but at a speed greater than the resonance speed ( Figure 3). While the drum (2) is rotated at under 100 rpm in the water releasing step
  • the washing machine (1 ) furthermore comprises a discharge pump
  • the discharge pump is operated at intervals during the water releasing step (A). In water releasing step (A), this provides the water drained from the laundry to be discharged at intervals in between the low percentage mechanical movements
  • the detergent water is
  • the water releasing step (A) is executed by the control unit (3) for approximately 5 minutes.
  • the drum (2) performs low percentage mechanical movements and the discharge pump is operated intermittently during these movements. Water is provided to be effectively removed from the laundry retaining plenty of water by the water releasing step (A) and the discharge is provided to be facilitated in the situation when excessive foaming is formed.
  • the gradual spin-drying step (B) is executed. In this step, the drum (2) performs several, preferably 3 successive low speed and short duration
  • spin-dryings at a speed lower than the spin-drying speed.
  • the normal spin-drying and rinsing steps are executed.
  • a more uniform spin-drying profile is provided to be executed before the rinsing step since the water contained in the laundry is removed from the washing machine (1 ) significantly by means of the water releasing (A) and gradual spin-drying (B) steps. Accordingly, the rinsing performance is increased that much more since detergent is removed from the laundry before the rinsing step.
  • the discharge pump is also operated between the water releasing step (A) and the gradual spin-drying step (B).
  • some amount of clean water is taken after the main washing step is completed and before the water releasing step (A). Consequently, reducing of the foam and the discharge of detergent are improved.
  • an effective rinsing is provided by reducing the foam together with the low percentage mechanical movement rather than releasing of the water contained in the laundry.

Landscapes

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

Abstract

The washing machine (1 ) of the present invention comprises a drum (2) wherein the laundry to be washed is placed, and a control unit (3) which executes the washing program, consisting of main washing, rinsing and spin-drying steps, at the spin speed determined by the producer according to the washing program that is selected by the user.

Description

Description
A WASHING MACHINE WITH IMPROVED RINSING AND SPIN-DRYING
PERFORMANCES
[0001] The present invention relates to a washing machine the rinsing and
spin-drying performances of which are improved.
[0002] The rinsing/spin-drying performance of the washing machine is adversely affected when the load capacity is exceeded or when loaded with the type of laundry absorbing plenty of water for example such as towels, bathrobes, 100 % cotton clothes or when more detergent than required is used, as a result the laundry contains detergent residue at the end of the washing program.
[0003] The laundry that absorbs plenty of water such as towels retain the
detergent water and this water retained by the laundry cannot be easily removed from the laundry during the discharge and spin-drying steps. In this situation, the required spinning speed cannot be reached in the spin-drying step. Another reason why the discharge becomes difficult is that the intensive foam formed due to too much detergent during the washing step prevents the discharge pump from operating effectively. In either situation, the water discharge that becomes difficult disrupts the spin-drying profile, the motor is strained and the desired spin speed cannot be reached. During the rinsing step, detergent cannot be removed from the laundry and the rinsing performance deteriorates since the motor cannot reach the desired spin speed.
[0004] In the situation the load capacity of the washing machine is exceeded, detergent cannot be removed from the laundry effectively since the rinsing water received for each laundry load unit remains insufficient, the spin-drying and respectively the rinsing performance deteriorate.
[0005] In the state of the art German Patent Application no DE10234472, the
explanation is given for rotating the drum intermittently in order to prevent the foaming.
[0006] In the state of the art German Patent Application no DE4210577, during the rinsing step several spinning stages are performed and the water is removed from the laundry after the last spinning stage by operating the discharge pump.
[0007] In the state of the art German Patent Application no DE41 15776, after the ending of the main wash, and the drum speed is then lowered to 100 rpm from 1 ,000 rpm and after a specific amount of rinsing water is taken into the drum, the drum is subsequently brought to a speed of 800 rpm.
[0008] The aim of the present invention is the realization of a washing machine the rinsing and spin-drying performances of which are improved.
[0009] The washing machine realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof, comprises a control unit which provides to execute the water releasing step wherein water is discharged gradually, and wherein the drum is rotated in the washing speed at least once in clockwise and at least once in counterclockwise direction at certain intervals after the main washing step and the following water discharge process, before the spin-drying and rinsing step, and which executes a gradual spin-drying step wherein the drum is rotated successively, for a short time, at a speed significantly much lower than the spin-drying step of the drum but at a speed greater than the resonance speed.
[0010] Thus, the discharge is facilitated by removing water from the laundry
retaining plenty of water and by reducing the foam especially in the situation when excessive foam is formed.
[001 1] In an embodiment of the present invention, the water releasing step lasts approximately for 5 minutes.
[0012] In an embodiment of the present invention, the discharge pump is
operated intermittently in the water releasing step.
[0013] In another embodiment of the present invention, the water removed from the laundry at the end of the water releasing step is provided to be discharged by operating the discharge pump between the water releasing and the gradual spin-drying steps.
[0014] In another embodiment of the present invention, the spin speed in the gradual spin-drying step is executed at between 300 to 400 rpm.
[0015] In another embodiment of the present invention, the water releasing step is executed after clean water is taken. Consequently, foam reducing and discharge of detergent is improved.
[0016] By means of the present invention, the adverse effect on the rinsing and spin-drying performance of the washing machine is minimized when the load capacity is exceeded, when the laundry type that absorbs plenty of water is loaded or when more detergent than required is used.
[0017] A washing machine realized in order to attain the aim of the present
invention is illustrated in the attached figures, where:
[0018] Figure 1 - is the perspective view of a washing machine.
[0019] Figure 2 - is the speed - time graph of the washing program in the prior art.
[0020] Figure 3 - is the speed - time graph of the washing program in the
embodiment of the present invention.
[0021] The elements illustrated in the figures are numbered as follows:
1. Washing machine
2. Drum
3. Control unit
[0022] The washing machine (1 ) of the present invention comprises a drum (2) wherein the laundry to be washed is placed, and a control unit (3) which executes the washing program, consisting of main washing, rinsing and spin-drying steps, at the spin speed determined by the producer according to the washing program that is selected by the user (Figure 1 ).
[0023] The control unit (3) provides the execution of a water releasing step (A) wherein water is discharged gradually, wherein the drum (2) is rotated in the washing speed at least once in clockwise and at least once in counterclockwise direction at certain intervals after the main washing step and the following water discharge process, before the spin-drying and rinsing steps, and afterwards provides the execution of a gradual spin-drying step (B) wherein the drum (2) is rotated successively, for a short time, at a speed significantly much lower than the spin-drying step of the drum (2) but at a speed greater than the resonance speed (Figure 3). While the drum (2) is rotated at under 100 rpm in the water releasing step
(A) , it is rotated at around 300 to 400 rpm in the gradual spin-drying step
(B) . [0024] Consequently, removing water from the laundry absorbing plenty of water and reducing the foam particularly in the situation when excessive foam is formed are provided and the continuity of the discharge is maintained with the water draining from the laundry.
[0025] The washing machine (1 ) furthermore comprises a discharge pump
providing the water to be discharged. The discharge pump is operated at intervals during the water releasing step (A). In water releasing step (A), this provides the water drained from the laundry to be discharged at intervals in between the low percentage mechanical movements
performed by the drum (2).
[0026] In an embodiment of the present invention, the detergent water is
discharged at the end of the main washing. Right after, the water releasing step (A) is executed by the control unit (3) for approximately 5 minutes. In the water releasing step (A), the drum (2) performs low percentage mechanical movements and the discharge pump is operated intermittently during these movements. Water is provided to be effectively removed from the laundry retaining plenty of water by the water releasing step (A) and the discharge is provided to be facilitated in the situation when excessive foaming is formed. After the water releasing step (A), the gradual spin-drying step (B) is executed. In this step, the drum (2) performs several, preferably 3 successive low speed and short duration
spin-dryings, at a speed lower than the spin-drying speed. After the gradual spin-drying step (B) is completed, the normal spin-drying and rinsing steps are executed. A more uniform spin-drying profile is provided to be executed before the rinsing step since the water contained in the laundry is removed from the washing machine (1 ) significantly by means of the water releasing (A) and gradual spin-drying (B) steps. Accordingly, the rinsing performance is increased that much more since detergent is removed from the laundry before the rinsing step.
[0027] In another embodiment of the present invention, the discharge pump is also operated between the water releasing step (A) and the gradual spin-drying step (B).
[0028] In another embodiment of the present invention, some amount of clean water is taken after the main washing step is completed and before the water releasing step (A). Consequently, reducing of the foam and the discharge of detergent are improved. In this embodiment, by taking clean water, an effective rinsing is provided by reducing the foam together with the low percentage mechanical movement rather than releasing of the water contained in the laundry.
[0029] By means of the present invention, the rinsing and spin-drying
performance of the washing machine (1 ) being adversely affected is minimized in the situation when the load capacity is exceeded, when the laundry type that absorbs plenty of water is loaded or when more detergent than required is used.
[0030] It is to be understood that the present invention is not limited to the
embodiments disclosed above and a person skilled in the art can easily introduce different embodiments. These different embodiments should be considered within the scope of the claims of the present invention, too.

Claims

Claims
1. A washing machine (1 ) comprising a drum (2) wherein the laundry to be
washed is placed and a control unit (3) which executes the washing program, consisting of main washing, rinsing and spin-drying steps, at the spin speed determined by the producer according to the washing program that is selected by the user,
characterized by the control unit (3) which provides the realization of
- a water releasing step (A) after the main washing step and the following water discharging process, before the spin-drying and rinsing steps, wherein the drum (2) is rotated at certain intervals at washing speed, at least once in clockwise and at least once in counterclockwise direction and (A) wherein water is discharged gradually and afterwards
- a gradual spin-drying step (B) wherein the drum (2) is rotated successively, for a short time, at a speed significantly much lower than the spin-drying step of the drum (2) but at a speed greater than the resonance speed.
2. A washing machine (1 ) as in Claim 1 , comprising a discharge pump providing the water to be discharged and characterized by the discharge pump that is operated at intervals in the water releasing step (A).
3. A washing machine (1 ) as in Claim 2, characterized by the discharge pump that is operated between the water releasing step (A) and the gradual spin-drying step (B).
4. A washing machine (1 ) as in Claim 1 or 2, characterized by the gradual
spin-drying step (B) that is executed at the spin speed of between 300 to 400 rpm.
5. A washing machine (1 ) as in Claim 1 , characterized by the water releasing step (A) that lasts for approximately 5 minutes.
6. A washing machine (1 ) as in Claim 1 , characterized by the water releasing step (A) that is started after taking clean water.
EP10757789.2A 2009-10-01 2010-09-29 A washing machine with improved rinsing and spin-drying performances Active EP2483463B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200907475 2009-10-01
PCT/EP2010/064465 WO2011039260A1 (en) 2009-10-01 2010-09-29 A washing machine with improved rinsing and spin-drying performances

Publications (2)

Publication Number Publication Date
EP2483463A1 true EP2483463A1 (en) 2012-08-08
EP2483463B1 EP2483463B1 (en) 2017-09-06

Family

ID=42962724

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10757789.2A Active EP2483463B1 (en) 2009-10-01 2010-09-29 A washing machine with improved rinsing and spin-drying performances

Country Status (3)

Country Link
EP (1) EP2483463B1 (en)
AU (1) AU2010303010B9 (en)
WO (1) WO2011039260A1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4115776A1 (en) 1991-05-15 1992-11-19 Licentia Gmbh Rinsing and spinning in program-controlled washing machine - has several stages to cut water consumption without impairing rinsing effect
DE4210577C2 (en) 1992-03-31 1996-10-24 Aeg Hausgeraete Gmbh Process for spin-washing laundry in a program-controlled washing machine
TR200401250T1 (en) * 2001-11-30 2005-10-21 Ar�El�K Anon�M ��Rket� Unbalanced load detection method
DE10234472A1 (en) 2002-07-29 2004-02-12 BSH Bosch und Siemens Hausgeräte GmbH A method for preventing wash liquor foam inhibiting pump performance in a horizontal drum automatic washing machine has a foam detector controlling the drive motor for the drum
US7451510B2 (en) * 2003-07-25 2008-11-18 Lg Electronics, Inc. Washing machine and method of performing spinning operation
DE102006035014B4 (en) * 2005-08-01 2016-02-11 Lg Electronics Inc. Control method for a spin cycle in a washing machine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011039260A1 *

Also Published As

Publication number Publication date
WO2011039260A1 (en) 2011-04-07
EP2483463B1 (en) 2017-09-06
AU2010303010B2 (en) 2014-06-05
AU2010303010A1 (en) 2012-04-19
AU2010303010B9 (en) 2014-10-30

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