US20040134240A1 - Drum-type washing machine and lift unit thereof - Google Patents

Drum-type washing machine and lift unit thereof Download PDF

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Publication number
US20040134240A1
US20040134240A1 US10/743,041 US74304103A US2004134240A1 US 20040134240 A1 US20040134240 A1 US 20040134240A1 US 74304103 A US74304103 A US 74304103A US 2004134240 A1 US2004134240 A1 US 2004134240A1
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US
United States
Prior art keywords
drum
lifts
lift unit
water storage
washing 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.)
Abandoned
Application number
US10/743,041
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English (en)
Inventor
Jin Kim
Kyung Woo
Soo Oh
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.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
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 LG Electronics Inc filed Critical LG Electronics Inc
Assigned to LG ELECTRONICS INC. reassignment LG ELECTRONICS INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KIM, JIN WOONG, OH, SOO YOUNG, WOO, KYUNG CHUL
Publication of US20040134240A1 publication Critical patent/US20040134240A1/en
Abandoned legal-status Critical Current

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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
    • D06F37/02—Rotary receptacles, e.g. drums
    • D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
    • D06F37/06—Ribs, lifters, or rubbing means forming part of the receptacle
    • D06F37/065—Ribs, lifters, or rubbing means forming part of the receptacle ribs or lifters having means for circulating the washing liquid
    • 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
    • D06F37/02—Rotary receptacles, e.g. drums
    • D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
    • D06F37/06—Ribs, lifters, or rubbing means forming part of the receptacle

Definitions

  • the present invention relates to a drum-type washing machine, and more particularly to a lift unit, for a drum-type washing machine, for lifting and dropping laundry together with wash water when a drum is rotated.
  • a drum-type washing machine has a structure, in which a tub and a drum are arranged in a horizontal direction and the drum containing laundry is rotated under the condition that wash water and a detergent are introduced into the drum, thereby washing the laundry.
  • FIG. 1 is a longitudinal-sectional view of a conventional drum-type washing machine
  • FIG. 2 is a perspective view of a lift of the conventional drum-type washing machine.
  • the conventional drum-type washing machine comprises a cabinet 2 provided with an opening formed through a front surface thereof, a door 2 a installed at the cabinet 2 for opening and closing the opening of the cabinet 2 , a tub 4 horizontally arranged in the cabinet 2 for containing wash water therein, a drum 6 rotatably arranged in the tub 4 for containing the laundry and rotated to wash the laundry, a motor 8 installed at a rear surface of the tub 4 for generating a rotary power, a spider 10 interposed between the motor 8 and the drum 6 and fixed to a rear surface of the drum 6 for transmitting the rotary power, and a rotary shaft 12 connected to the spider 10 and the motor 8 .
  • the tub 4 and the drum 6 have a cylindrical shape, and front ends thereof are opened for putting the laundry into the tub 4 and the drum 6 therethrough.
  • a plurality of dehydration holes 6 a are formed through a circumference of the drum 6 .
  • a plurality of lifts 20 are protruded from the inner wall of the drum 6 so that the lifts 20 are spaced from each other by a designated interval, thereby lifting and then dropping the wash water in accordance with the rotation of the drum 6 .
  • the lifts 20 are located on the inner wall of the drum 6 and spaced from each other in a circumferential direction by the designated interval so that the lifts 20 are parallel with a rotary axis (C) of the drum 6 .
  • each of the lifts 20 includes left and right upward sloping sides 22 and 24 so that top ends of the left and right sloping sides 22 and 24 are connected, and front and rear sides 26 and 28 contacting front and rear ends of the left and right sloping sides 22 and 24 .
  • a bottom surface of each of the lifts 20 is opened so that the wash water circulates in the lifts 20 , and holes 20 a are formed through a top surface of each of the lifts 20 so that the wash water passes through the holes 20 a of the lifts 20 .
  • the lifts 20 are rotated together with the rotation of the drum 6 . Thereby, the lifts 20 lift the laundry located on the bottom of the drum 6 along the circumference of the drum 6 to a designated height, and then drop the laundry to the bottom of the drum 6 .
  • the drum-type washing machine provided with the lifts 20 is operated in wash and rinse modes due to friction generated between the laundry and the wash water when the laundry is rotated together with the rotation of the drum 6 , and impact generated by a head caused by lifting and dropping the laundry by means of the lifts 20 .
  • the conventional drum-type washing machine provided with the lifts 20 is operated in the wash and rinse modes by a current in the wash water having a designated pattern created by the centrifugal force generated by the rotation of the drum 6 , and particularly, the lifts 20 lift and transfer the laundry contained in the drum 6 . Accordingly, the conventional drum-type washing machine is disadvantageous in that it does not form a complicated water current and has a limit in improving washing and rinsing efficiency.
  • the present invention has been made in view of the above problems, and it is an object of the present invention to provide a lift unit for a drum-type washing machine, which is rotated together with the rotation of a drum, and lifts and drops a designated quantity of wash water and laundry, and a drum-type washing machine comprising the lift unit, thereby forming various currents in the wash water and improving washing and rinsing efficiency.
  • a lift unit for a drum-type washing machine which is protruded from an inner wall of a drum for containing the laundry in the drum, comprising a water storage unit formed at at least one side surface of the lift unit for lifting and dropping the wash water when the drum is rotated.
  • the lift unit may be protruded from the inner wall of the drum in a longitudinal direction of the drum, and comprise water storage units respectively formed at both side surfaces of the lift unit.
  • both side surfaces of the lift unit may have a tapered structure so that a width of a top surface thereof is smaller than a width of a bottom surface thereof, and the water storage units are respectively formed at both side surfaces of the lift unit.
  • a plurality of holes may be formed through a top surface of the lift unit so that the wash water passes through the holes of the lift unit, and a bottom surface of the lift unit may be opened.
  • the water storage unit may include a water storage surface concaved into the side surface of the lift unit; and a partition surrounding a circumference of the water storage surface.
  • a drum-type washing machine comprising: a cabinet provided with a door installed at a front surface thereof; a tub horizontally and supportably arranged in the cabinet; a drum rotatably installed in the tub for achieving washing of laundry; driving means installed at a rear surface of the tub for rotating the drum; and lifts, for containing wash water, protruded from an inner wall of the drum for containing the laundry in the drum, spaced from each other by a designated interval in a circumferential direction of the drum, and provided with water storage units formed at at least a part of side surfaces of the lifts.
  • the lift unit of the drum-type washing machine of the present invention comprises the water storage surfaces formed on both side surfaces, and lifts wash water to a designated height and then drops the wash water according to the rotation of the drum, thereby circulating the wash water in circumferential and vertical directions of the drum, forming various water currents, and improving washing and rinsing efficiency.
  • FIG. 1 is a longitudinal-sectional view of a conventional drum-type washing machine
  • FIG. 2 is a perspective view of a lift of the conventional drum-type washing machine
  • FIG. 3 is a longitudinal-sectional view of a drum-type washing machine in accordance with the present invention.
  • FIG. 4 is a perspective view of a lift of the drum-type washing machine in accordance with the present invention.
  • FIGS. 5A, 5B and 5 C are schematic cross-sectional views taken along the line A-A of FIG. 3, illustrating operation of the lift of the drum-type washing machine in accordance with the present invention.
  • FIG. 3 is a longitudinal-sectional view of a drum-type washing machine in accordance with the present invention.
  • FIG. 4 is a perspective view of a lift of the drum-type washing machine in accordance with the present invention.
  • the drum-type washing machine in accordance with the present invention comprises a cabinet 52 provided with an opening formed through a front surface thereof, a door 52 a installed at the cabinet 52 for opening and closing the opening of the cabinet 52 , a tub 54 horizontally arranged in the cabinet 52 for containing wash water therein, a drum 56 rotatably arranged in the tub 54 or containing laundry and rotated to wash the laundry, a motor 58 installed at a rear surface of the tub 54 for generating a rotary power, a spider 60 interposed between the motor 58 and the drum 56 and fixed to a rear surface of the drum 56 for transmitting the rotary power, a rotary shaft 62 connected to the spider 60 and the motor 58 , and a plurality of lifts 70 protruded from the inner wall of the drum 56 in a longitudinal direction of the drum 56 so that the lifts 70 are spaced from each other in a circumferential direction by a designated interval, thereby lifting and dropping the wash water and the laundry in accordance
  • the drum-type washing machine of the present invention further comprises a water feed unit 64 for feeding the wash water into the tub 54 and the drum 56 in a wash mode, and a drain unit 66 for discharging the wash water from the tub 54 and the drum 56 to the outside therethrough in rinse and dehydration modes.
  • the tub 54 and the drum 56 has a cylindrical shape, and front ends thereof are opened for putting the laundry into the tub 54 and the drum 56 therethrough.
  • a plurality of dehydration holes 56 a are formed through a circumference of the drum 56 .
  • the lifts 70 are protruded from the inner wall of the drum 56 , and spaced from each other in a circumferential direction by the designated interval so that the lifts 70 are parallel with a rotary axis (C) of the drum 56 .
  • each of the lifts 70 includes both side surfaces, which slope upward so that the width of a top surface is smaller than that of a bottom surface, and front and rear surfaces 76 and 77 contacting front and rear ends of both the side surfaces.
  • the water storage unit 71 of each of the lifts 70 includes left and right water storage surfaces 72 and 74 concaved into the side surfaces, and first and second partitions 78 and 79 extended from the front and rear surfaces 76 and 77 perpendicularly to the left and right water storage surfaces 72 and 74 so that the wash water contained by the left and right water storage surfaces 72 and 74 does not flow toward the front and rear ends of the side surfaces.
  • a bottom surface of each of the lifts 70 is opened so that the wash water circulates in the lifts 70 , and holes 75 are formed through a top surface of each of the lifts 70 so that the wash water passes through the holes 75 of the lifts 70 .
  • the water storage unit 71 of each of the lifts 70 includes a left water storage subunit, which contains the wash water, between the left water storage surface 72 and the first partition 78 , and a right water storage subunit, which contains the wash water, between the right water storage surface 74 and the second partition 79 .
  • the left water storage surface 72 is located in the way of a forward rotational direction (P) of the drum 56 , and has a concave shape for containing the wash water in case that the drum 56 is rotated in the forward direction.
  • the right water storage surface 74 is located in the way of a backward rotational direction (Q) of the drum 56 , and has a concave shape for containing the wash water in case that the drum 56 is rotated in the backward direction.
  • the first and second partitions 78 and 79 are extended from the front and rear surfaces 76 and 77 perpendicularly to the front and rear ends of the left and right water storage surfaces 72 and 74 .
  • Upper ends of the first and second partitions 78 and 79 respectively connect upper and lower ends of the left and right water storage surfaces 72 and 74 in a straight line.
  • the left and right water storage surfaces 72 and 74 have a concave shape for lifting the wash water to a designated height and then dropping the wash water.
  • the left and right water storage surfaces 72 and 74 may have various shapes rather than the concave shape.
  • FIGS. 5A, 5B and 5 C are schematic cross-sectional views of the drum-type washing machine of the present invention in a wash or rinse mode.
  • the lifts 70 installed at the inner wall of the drum 56 are rotated so that the laundry located on the bottom of the drum 56 is lifted by the lifts 70 , transferred to a designated height in a circumferential direction of the drum 56 , and then dropped to the bottom of the drum 56 , thereby washing and rinsing the laundry due to a head of water.
  • the left water storage subunit having the shape of a groove formed between the left water storage surface 72 and the first partition 78 , of the water storage unit 71 of each of the lifts 70 lifts the wash water to a designated height and then drops the wash water.
  • the right water storage subunit having the shape of a groove formed between the right water storage surface 74 and the second partition 79 , of the water storage unit 71 of each of the lifts 70 lifts the wash water to a designated height and then drops the wash water.
  • the drum-type washing machine lifts the wash water to a designated height, and then drops the wash water by the lifts 70 according to the rotation of the drum 56 , thus allowing the wash water to collide with the laundry in the drum 56 .
  • the drum-type washing machine circulates the wash water in a vertical direction of the drum 56 as well as in a circumferential direction of the drum 56 , thus forming various water currents and achieving the same effect as rubbing the laundry with ones hands. Thereby, it is possible to improve washing and rinsing efficiency.
  • the present invention provides a lift unit, for a drum-type washing machine, comprising a water storage unit including water storage subunits formed on both sides of the lift unit, which lifts wash water to a designated height and then drops the wash water according to the rotation of a drum, thereby achieving the same effect as beating the laundry with ones hands. Further, the lift unit circulates the wash water in a vertical direction of the drum as well as in a circumferential direction of the drum so as to form various water currents, thereby achieving the same effect as rubbing the laundry with ones hands. Accordingly, the lift unit of the drum-type washing machine of the present invention improves washing and rinsing efficiency.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
US10/743,041 2002-12-26 2003-12-23 Drum-type washing machine and lift unit thereof Abandoned US20040134240A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2002-0084230 2002-12-26
KR10-2002-0084230A KR100465724B1 (ko) 2002-12-26 2002-12-26 드럼세탁기의 리프트

Publications (1)

Publication Number Publication Date
US20040134240A1 true US20040134240A1 (en) 2004-07-15

Family

ID=32464615

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/743,041 Abandoned US20040134240A1 (en) 2002-12-26 2003-12-23 Drum-type washing machine and lift unit thereof

Country Status (5)

Country Link
US (1) US20040134240A1 (de)
EP (1) EP1433888B1 (de)
KR (1) KR100465724B1 (de)
CN (1) CN1294317C (de)
DE (1) DE60308131T2 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101093878B1 (ko) * 2004-06-05 2011-12-13 엘지전자 주식회사 건조기의 드럼 장치
KR101253566B1 (ko) * 2005-07-07 2013-04-11 삼성전자주식회사 드럼세탁기
US20090276966A1 (en) * 2006-07-06 2009-11-12 Bsh Bosch Und Siemens Hausgerate Gmbh Washing machine with hollow agitators
DE102008006511A1 (de) * 2008-01-29 2009-07-30 BSH Bosch und Siemens Hausgeräte GmbH Wäschetrommel für eine Wäschebehandlungsmaschine
ES2376969T3 (es) 2009-10-06 2012-03-21 Miele & Cie. Kg Tambor para una lavadora
DE102013000305B4 (de) 2012-02-21 2023-05-11 BSH Hausgeräte GmbH Wäschetrommelanordnung mit Mitnehmern
KR101504093B1 (ko) * 2013-07-04 2015-03-19 동부대우전자 주식회사 드럼세탁기
KR102449509B1 (ko) 2016-01-05 2022-09-29 엘지전자 주식회사 의류처리장치용 리프터
KR102281195B1 (ko) * 2016-01-05 2021-07-22 엘지전자 주식회사 의류처리장치용 리프터
BE1029571B1 (de) 2021-07-09 2023-02-06 Miele & Cie Trommel für eine Waschmaschine und Waschmaschine

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2471760A (en) * 1945-04-18 1949-05-31 Mildred L Irons Oscillatory washing machine agitator
US5782111A (en) * 1996-07-02 1998-07-21 Sights Denim Systems Inc Mechanical desizing and abrading apparatus
US5862687A (en) * 1996-05-11 1999-01-26 Samsung Electronics Co., Ltd. Drum washing machine
US6463767B2 (en) * 1999-06-07 2002-10-15 BSH Bosch und Siemens Hausgeräte GmbH Front-loadable washing machine having a rotatable laundry drum
US20040118168A1 (en) * 2002-09-25 2004-06-24 Lg Electronics Inc. Lift of drum-type washing machine and drum-type washing machine using the same
US20040123634A1 (en) * 2002-12-26 2004-07-01 Kim Jin Woong Drum-type washing machine
US6889399B2 (en) * 2000-07-25 2005-05-10 Steiner-Atlantic Corp. Textile cleaning processes and apparatus
US20050204785A1 (en) * 2004-03-19 2005-09-22 Lg Electronics Inc. Drum-type washing machine
US7096695B2 (en) * 2001-10-23 2006-08-29 Lg Electronics Inc. Washing machine
US7299665B2 (en) * 2004-03-19 2007-11-27 Lg Electronics Inc. Lift for drum-type washing machine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1111126A (en) * 1913-05-19 1914-09-22 John W Bercaw Laundry-washing machine.
GB390470A (en) * 1932-12-24 1933-04-06 David Kiel Tullis Improvements relating to washing machines
DE3527724A1 (de) * 1985-08-02 1987-02-12 Licentia Gmbh Trommelwaschmaschine
DE3712118A1 (de) * 1986-05-06 1987-11-12 Bosch Siemens Hausgeraete Trommelwaschmaschine
DE3803195C2 (de) * 1988-02-03 1994-08-18 Bosch Siemens Hausgeraete Mitnehmerschöpfrippe für eine Waschtrommel
DE3824183A1 (de) * 1988-07-16 1990-01-25 Henkel Kgaa Dosierspeicher
DE19600354A1 (de) * 1995-01-11 1996-07-18 Miele & Cie Waschmaschine und Verfahren zur Steuerung des Waschprogramms einer Waschmaschine

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2471760A (en) * 1945-04-18 1949-05-31 Mildred L Irons Oscillatory washing machine agitator
US5862687A (en) * 1996-05-11 1999-01-26 Samsung Electronics Co., Ltd. Drum washing machine
US5782111A (en) * 1996-07-02 1998-07-21 Sights Denim Systems Inc Mechanical desizing and abrading apparatus
US6463767B2 (en) * 1999-06-07 2002-10-15 BSH Bosch und Siemens Hausgeräte GmbH Front-loadable washing machine having a rotatable laundry drum
US6889399B2 (en) * 2000-07-25 2005-05-10 Steiner-Atlantic Corp. Textile cleaning processes and apparatus
US7096695B2 (en) * 2001-10-23 2006-08-29 Lg Electronics Inc. Washing machine
US20040118168A1 (en) * 2002-09-25 2004-06-24 Lg Electronics Inc. Lift of drum-type washing machine and drum-type washing machine using the same
US20040123634A1 (en) * 2002-12-26 2004-07-01 Kim Jin Woong Drum-type washing machine
US20050204785A1 (en) * 2004-03-19 2005-09-22 Lg Electronics Inc. Drum-type washing machine
US7299665B2 (en) * 2004-03-19 2007-11-27 Lg Electronics Inc. Lift for drum-type washing machine

Also Published As

Publication number Publication date
EP1433888A1 (de) 2004-06-30
EP1433888B1 (de) 2006-09-06
KR100465724B1 (ko) 2005-01-13
DE60308131T2 (de) 2007-08-16
DE60308131D1 (de) 2006-10-19
CN1294317C (zh) 2007-01-10
CN1512000A (zh) 2004-07-14
KR20040057482A (ko) 2004-07-02

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AS Assignment

Owner name: LG ELECTRONICS INC., KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KIM, JIN WOONG;WOO, KYUNG CHUL;OH, SOO YOUNG;REEL/FRAME:014842/0767

Effective date: 20031203

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION