AU2013385216B2 - Improved efficiency wash cycle for washing machine - Google Patents
Improved efficiency wash cycle for washing machine Download PDFInfo
- Publication number
- AU2013385216B2 AU2013385216B2 AU2013385216A AU2013385216A AU2013385216B2 AU 2013385216 B2 AU2013385216 B2 AU 2013385216B2 AU 2013385216 A AU2013385216 A AU 2013385216A AU 2013385216 A AU2013385216 A AU 2013385216A AU 2013385216 B2 AU2013385216 B2 AU 2013385216B2
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- AU
- Australia
- Prior art keywords
- rotary drum
- water
- rpm
- washing machine
- tub
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- 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.)
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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
- 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
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Abstract
The present invention pertains to a washing machine (1) comprising a rotary drum (3) in which cloth items are placeable, a water tub (2) in which the rotary drum (3) is rotatable, a motor (7) providing the rotary drum (3) to be driven by means of a pulley mechanism (10), the latter disposed outside the tub (2), a circulation pump (4) in a circulation pipe (5) drawing wash water stored in the water tub (2) and delivering pressured water to a spray nozzle (8) via a nozzle water conduit (9), the spray nozzle (8) jetting the wash water from a front door (6) side above the rotary drum (3) toward the inner part of the same.
Description
The present invention pertains to a washing machine (1) comprising a rotary drum (3) in which cloth items are placeable, a water tub (2) in which the rotary drum (3) is rotatable, a motor (7) providing the rotary drum (3) to be driven by means of a pulley mechanism (10), the latter disposed outside the tub (2), a circulation pump (4) in a circulation pipe (5) drawing wash water stored in the water tub (2) and delivering pressured water to a spray nozzle (8) via a nozzle water conduit (9), the spray nozzle (8) jetting the wash water from a front door (6) side above the rotary drum (3) toward the inner part of the same.
wo 2014/161579 Al lllllllllllllllllllllllllllllllllllll^
TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Published:
— with international search report (Art. 21(3))
2013385216 20 Dec 2017
IMPROVED EFFICIENCY WASH CYCLE FOR WASHING MACHINE [0001] The present invention relates to a method for operating a washing machine having an improved washing performance.
[0002] Washing machines are generally classified as a top loading type washing machine or a front loading type washing machine. It is well-known that a front loading type washing machine contains a tub in a cabinet for receiving washing water and a drum rotatably mounted in the tub. Typically, wash water is received in the tub, and cloth items to be washed are placed in the drum. Cloth items are then lifted and dropped by lifters while the drum is rotated so that washing and rinsing process is carried out.
[0003] The washing machine of the above type further incorporates a pump unit for circulating washing water in the lower part of the tub, said pump unit conveying washing water to an upper part of the tub such that a more efficient washing angle can be obtained by means of a nozzle whereby water jets from the upper part of the tub are delivered.
[0004] It is to be noted that 20 % of total household water consumption originate from washing machines. To address this phenomenon, manufacturers design and implement various arrangements in need of improving water consumption profile of such machines. As modem washing programs more and more utilize less wash water, a more efficient wash cycle is considered as a decisive factor in this regard.
[0005] Among others, a prior art publication in the technical field of the invention may be referred to as US2008189875, which attempts at improving washing performance by configuration of individual phases of the wetting process so as to adjust the same in respect of the quantity and specific absorbency of the laundry.
[0006] The present disclosure relates to a method for operating a washing machine to obtain an improved washing or rinsing efficiency.
[0007] There is a need for a method of operating a washing machine with improved washing or rinsing efficiency.
[0008] It is an object of the present invention to at least substantially satisfy the above need.
AH26(14022650_2):JBL
2013385216 20 Dec 2017 [0008a] According to one aspect, the present invention provides a method for operating a washing machine, said washing machine comprising a rotary drum in which cloth items are placeable, a water tub in which the rotary drum is rotatable, a motor for driving the rotary drum, a circulation pump in a circulation pipe drawing wash water stored in the water tub and delivering pressured water to a spray nozzle via a nozzle water conduit, the spray nozzle jetting the wash water toward an inner central region of the rotary drum, wherein the method comprises:
a first step of water retention and impregnating cloth items with wash water in which the rotary drum is rotated at a first peak speed of about 100 rpm followed by a lower second peak speed of about 50-55 rpm such that the rotary drum speed is changed immediately after the peak values are reached and each pair of said first and second peaks is continuously repeated in alternating directions while the circulation pump is operated provided that the rotary drum is rotated;
a second step of water releasing in which the circulation pump is stopped and the motor is rotated at about 50-55 rpm in opposite directions in an alternating manner; and a final step in which a continuous motor speed rate of 40-45 rpm in opposite directions in an alternating manner is adopted with periodical peaks of about 100 rpm at infrequent intervals such that a frequency of the periodical peaks is substantially lower than that of the 4045 rpm rate.
[0009] There is also disclosed herein a front loading washing machine with a drum in which cloth items are placeable and a water tub in which the rotary drum is rotatable. A motor conventionally provides that the drum is driven by means of a pulley mechanism disposed outside the tub.
[0010] A circulation pump is provided in a circulation pipe, which draws wash water stored in the water tub. Pressured water is supplied to a spray nozzle through a nozzle water conduit. In this way, the spray nozzle produce water jets targeting cloth items in the drum.
[0011] The spray nozzle jets wash water from a front door side above the rotary drum toward the inner region of the same. A method according to an embodiment of the invention is performed such that the rotary drum is rotated at a first peak speed followed by a lower peak speed. Peak speeds are not maintained and as such they are temporary values. Each pair of the
AH26(14022650_2):JBL
2a
2013385216 20 Dec 2017 first and second peaks is repeated in alternating directions and the circulation pump is operated alongside.
[0012] A second step of water releasing is then performed in which the circulation pump is not operated and the motor is rotated at a speed of about 50-55 rpm in opposite directions in an alternating manner. The final step features a continuous speed rate of about 40-45 rpm in opposite direction in an alternating manner with infrequent peaks of 100 rpm in between.
[0012a] The method of the present invention, at least in its preferred embodiments, may thus provide homogenous mixing and adequate impregnation of every part of cloth items with discontinuous peaks. The wash water extracted from the laundry during a first rotational profile of the drum may be recirculated toward the inner central region of the drum for impregnating the laundry amassed in the inner central region during a second rotational profile. Further, an enhanced mechanical effect can be obtained by increasing contacting potentiality of each cloth item with other ones due to a continuous speed rate regime. Speed rate may be determined such that the laundry is kept centrally while at the same time causing relative movement of cloth items in contact with each other. Further, instantaneous scattering of the laundry can also be ensured on an occasional basis.
[0013] Accompanying drawings are given solely for the purpose of exemplifying a
AH26(14022650_2):JBL
WO 2014/161579
PCT/EP2013/057100 method for operating a washing machine with improved washing or rinsing efficiency whose advantages over prior art were outlined above and will be explained in brief hereinafter.
[0014] The drawings are not meant to delimit the scope of protection as identified in the claims nor should they be referred to alone in an effort to interpret the scope identified in the claims without recourse to the technical disclosure in the description of the present invention.
[0015] Fig. 1 demonstrates a side cut-away view of a washing machine according to the present invention.
[0016] Fig. 2 demonstrates the drum’s rotation curve performed according to the first step of the wash cycle of the present invention.
[0017] Fig. 3 demonstrates the drum’s rotation curve performed according to the third step of the wash cycle of the present invention.
[0018] The following numerals are used in the detailed description:
[0019] Washing machine (1) [0020] Water tub (2) [0021] Rotary drum (3) [0022] Circulation pump (4) [0023] Circulation pipe (5) [0024] Front door (6) [0025] Motor (7) [0026] Spray nozzle (8) [0027] Nozzle water conduit (9) [0028] Pulley mechanism (10) [0029] The present invention proposes a washing machine designated generally by the numeral 1.
[0030] The present invention relates to a washing machine (1) comprising a rotary drum (3) rotated around the horizontal axis and wherein the laundry is placed. A water tub (2) in which said rotary drum (3) rotates is provided such that a motor (7) drives a rotary drum (3) by means of a pulley mechanism (10) disposed outside said water tub (2). The latter transmits rotational movement of the motor (7) to the rotary drum (3). The washing machine (1) conventionally comprises a discharge pump that discharges
WO 2014/161579 PCT/EP2013/057100 the wash water as stipulated by the washing process; a discharge conduit conveys the wash water accordingly.
[0031] According to the present invention, a circulation pump (4) placed in a circulation pipe (5) draws wash water stored in the water tub (2) and pressurizes the wash water flowing in a nozzle water conduit (9) for conveying it into the rotary drum (3). This mechanism allows the wash water stored in the water tub (2) to run through the nozzle water conduit (9) and to circulate to the rotary drum (3).
[0032] A motor is drivingly coupled to the circulation pump (4) which delivers pressured water to a spray nozzle (8) via the nozzle water conduit (9). A conventional drum-type washing machine jets the wash water from a front door (6) side toward the inner part of the rotary drum (3) through the spray nozzle (8) placed above the rotary drum (3) at the front door (6) side.
[0033] The wash cycle of the present invention comprises the steps of water retention and impregnating laundry with wash water, water release and main wash cycles. In the first step of water retention, wash water is received in the rotary drum (3), this phase typically taking about five minutes. Thereupon, the rotary drum (3) is rotated at a speed of about 100 rpm followed by lower peaks of about 50-55 rpm. The speed characteristic of the motor (7) in this water retention and impregnation step requires that a first peak of about 100 rpm is followed by a second lower peak of about 50-55 rpm. The motor (7) is operated such that its speed is changed and decreased immediately after the peak values are reached. In other words, it is not operated continuously at peak speeds.
[0034] The first peaks in this regime serves to the purpose of fixating the laundry to the rotary drum’s (3) lateral walls. On the other hand, the second lower peaks will help homogenous mixing of the laundry as cloth items will disengage from the rotary drum’s (3) wall surfaces at these speeds. Homogenous mixing is important as it enables impregnation of every part of cloth items with the wash water.
[0035] The wash water discharged by the discharge pump is recirculated into the rotary drum (3) by the circulation pump (4) through the spray nozzle (8). This provides that the wash water containing detergents extracted from the
WO 2014/161579 PCT/EP2013/057100 laundry during operation of the motor (7) around the first peaks is recirculated toward the inner central region of the rotary drum (3), hence impregnating the laundry that is made disengaged from the rotary drum (3) walls during speeds around the second lower peaks. During the water retention and impregnation step, the motor of the circulation pump (4) is continuously operated as long as the motor’s (7) shaft rotates the rotary drum (3).
[0036] Further, in the first step, the motor (7) is operated such that each pair of the first and second peaks is repeated in alternating directions. Overall, the first step is very effective in ensuring that a homogenous mixing as well as an improved water consumption performance is obtained.
[0037] According to the wash cycle of the present invention, following the water retention and impregnation step, water releasing step is performed such that the circulation pump (4) is stopped and the motor (7) is rotated at around 50-55 rpm in opposite directions in an alternating manner. In this step, a certain amount of the wash water is taken out of the rotary drum (3) by the discharge pump.
[0038] The final step of the wash cycle according to the present invention is the main wash cycle. The main purpose of this step is to enhance mechanical effect by increasing contacting potentiality of each cloth item with other cloth items as much as possible. This is accomplished by a motor (7) speed of 40-45 rpm, which is slightly lower than the lower peak value of the first step. Since the laundry is already homogenously mixed and adequately wet at this final stage, a regime with continuous speed rate, i.e. having no discrete peak values is adopted. Continuous speed rate regime is advantageous in that the laundry is more and more amassed in the inner central region of the rotary drum (3) rather than being adhered to lateral walls, accordingly enhancing mechanical contact among cloth items. The speed is even lower than the second lower peak value in the first step of the wash cycle because it is considered as an optimal speed value for keeping the laundry centrally while at the same time causing relative movement of cloth items in contact with each other. There still exist periodical peaks of around 100 rpm for instantaneous scattering of
WO 2014/161579
PCT/EP2013/057100 the laundry. Those are provided at infrequent intervals such that their frequency is substantially lower than that of the main 40-45 rpm curve, the curve having a speed profile alternating in opposite directions.
[0039] In a nutshell, the present invention proposes a washing machine (1) comprising a rotary drum (3) in which cloth items are placeable, a water tub (2) in which the rotary drum (3) is rotatable, a motor (7) providing the rotary drum (3) to be driven by means of a pulley mechanism (10), the latter disposed outside the tub (2). A circulation pump (4) in a circulation pipe (5) draws wash water stored in the water tub (2) and delivers pressured water to a spray nozzle (8) via a nozzle water conduit (9), the spray nozzle (8) jetting the wash water from a front door (6) side above the rotary drum (3) toward the inner part of the same.
[0040] The present invention provides that the laundry is first adhered to the rotary drum’s (3) lateral walls and then amassed in the inner central region thereof. This movement provides homogenous mixing and adequate impregnation of every part of cloth items with the wash water. The first step comprises a first and a second motor speed values in the form of discontinuous peaks. The wash water containing detergents extracted from the laundry during the first peaks is recirculated toward the inner central region of the rotary drum (3) for impregnating the laundry amassed in the inner central region during the second lower peaks. Further, in the third step which is the main wash cycle, an enhanced mechanical effect is obtained by increasing contacting potentiality of each cloth item with other ones due to a continuous speed rate regime. Speed rate is determined such that the laundry is kept centrally while at the same time causing relative movement of cloth items in contact with each other. Further, instantaneous scattering of the laundry is also ensured on an occasional basis.
2013385216 20 Dec 2017
Claims (1)
1. A method for operating a washing machine, said washing machine comprising a rotary drum in which cloth items are placeable, a water tub in which the rotary drum is rotatable, a motor for driving the rotary drum, a circulation pump in a circulation pipe drawing wash water stored in the water tub and delivering pressured water to a spray nozzle via a nozzle water conduit, the spray nozzle jetting the wash water toward an inner central region of the rotary drum, wherein the method comprises:
a first step of water retention and impregnating cloth items with wash water in which the rotary drum is rotated at a first peak speed of about 100 rpm followed by a lower second peak speed of about 50-55 rpm such that the rotary drum speed is changed immediately after the peak values are reached and each pair of said first and second peaks is continuously repeated in alternating directions while the circulation pump is operated provided that the rotary drum is rotated;
a second step of water releasing in which the circulation pump is stopped and the motor is rotated at about 50-55 rpm in opposite directions in an alternating manner; and a final step in which a continuous motor speed rate of 40-45 rpm in opposite directions in an alternating manner is adopted with periodical peaks of about 100 rpm at infrequent intervals such that a frequency of the periodical peaks is substantially lower than that of the 40-45 rpm rate.
Arcelik Anonim Sirketi
Patent Attorneys for the Applicant/Nominated Person SPRUSON & FERGUSON
AH26(14022650_2):JBL
WO 2014/161579
PCT/EP2013/057100
1/2
Fig.1
PCT/EP2013/057100 \\ 0 2014/161579
Fig. 2
Fig. 3
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2013/057100 WO2014161579A1 (en) | 2013-04-04 | 2013-04-04 | Improved efficiency wash cycle for washing machine |
Publications (2)
Publication Number | Publication Date |
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AU2013385216A1 AU2013385216A1 (en) | 2015-10-08 |
AU2013385216B2 true AU2013385216B2 (en) | 2018-01-25 |
Family
ID=48128278
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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AU2013385216A Ceased AU2013385216B2 (en) | 2013-04-04 | 2013-04-04 | Improved efficiency wash cycle for washing machine |
Country Status (3)
Country | Link |
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EP (1) | EP2981643B1 (en) |
AU (1) | AU2013385216B2 (en) |
WO (1) | WO2014161579A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109820462B (en) * | 2019-03-28 | 2021-06-11 | 佛山市百斯特电器科技有限公司 | Method for controlling motor and dish-washing machine |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2110474A2 (en) * | 2008-04-14 | 2009-10-21 | LG Electronics Inc. | Controlling method of washing machine |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100689338B1 (en) * | 2001-01-16 | 2007-03-08 | 주식회사 엘지이아이 | The rinse method for a washing machine |
DE10234473A1 (en) * | 2002-07-29 | 2004-02-12 | BSH Bosch und Siemens Hausgeräte GmbH | A method for acceleration of the absorption of water in the dry wash load of an automatic washing machine, using a controlled sequence of alternate direction tumbles at different speeds |
DE102005012426A1 (en) | 2005-03-17 | 2006-09-21 | BSH Bosch und Siemens Hausgeräte GmbH | Wetting process for the laundry in a program-controlled washing machine |
JP2012205625A (en) * | 2011-03-29 | 2012-10-25 | Panasonic Corp | Drum-type washing machine |
-
2013
- 2013-04-04 AU AU2013385216A patent/AU2013385216B2/en not_active Ceased
- 2013-04-04 EP EP13716755.7A patent/EP2981643B1/en active Active
- 2013-04-04 WO PCT/EP2013/057100 patent/WO2014161579A1/en active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2110474A2 (en) * | 2008-04-14 | 2009-10-21 | LG Electronics Inc. | Controlling method of washing machine |
Also Published As
Publication number | Publication date |
---|---|
EP2981643A1 (en) | 2016-02-10 |
AU2013385216A1 (en) | 2015-10-08 |
EP2981643B1 (en) | 2017-06-21 |
WO2014161579A1 (en) | 2014-10-09 |
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