US20150184325A1 - Apparatus for reduction of vibration in washing machine - Google Patents

Apparatus for reduction of vibration in washing machine Download PDF

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Publication number
US20150184325A1
US20150184325A1 US14/169,055 US201414169055A US2015184325A1 US 20150184325 A1 US20150184325 A1 US 20150184325A1 US 201414169055 A US201414169055 A US 201414169055A US 2015184325 A1 US2015184325 A1 US 2015184325A1
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US
United States
Prior art keywords
tub
base
dampers
drum
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
US14/169,055
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English (en)
Inventor
Man Ki Kim
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.)
WiniaDaewoo Co Ltd
Original Assignee
Dongbu Daewoo Electronics Corp
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 Dongbu Daewoo Electronics Corp filed Critical Dongbu Daewoo Electronics Corp
Assigned to DONGBU DAEWOO ELECTRONICS CORPORATION reassignment DONGBU DAEWOO ELECTRONICS CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KIM, MAN KI
Publication of US20150184325A1 publication Critical patent/US20150184325A1/en
Abandoned legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
    • F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
    • 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
    • D06F37/24—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a vertical axis
    • 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 disclosure relates to an apparatus for reduction of vibrations in a washing machine.
  • an automatic washing machine is designed to remove contaminants from clothes, bedclothes, etc. (hereinafter referred to as “laundry”) using friction and the impact of water flow caused by the rotation of a pulsator or other member in a drum containing water and detergent.
  • the laundry may gather at one side of the drum causing an unbalanced state of laundry in the drum.
  • Vibrations caused by the unbalance of laundry in the drum may result in audible noise. Furthermore, the vibrations may cause the drum to collide with a tub surrounding the drum or a cabinet that encloses the tub and drum and forms the exterior of the washing machine. Such collisions may cause damage to components within the washing machine.
  • a suspension unit for absorbing the vibrations of the drum has been proposed to address these issues.
  • the suspension units are installed at various positions along the periphery of the drum to connect a lower peripheral surface of the tub or drum to an upper portion of the cabinet.
  • Each suspension unit incorporates a spring that acts to attenuate or absorb any vibrations generated by the drum.
  • the suspension unit has a structure connecting the lower portion of the drum to the upper portion of the cabinet, it may be effective for absorbing vertical vibrations (i.e., vibrations in the up/down direction relative to the washing machine). However, this configuration may not effectively reduce horizontal vibrations (i.e., vibrations in the front/back/left/right directions relative to the washing machine).
  • the drum begins to rotate at a low speed during the initial stage of a water removal operation, the speed of the drum will eventually increase, which may result in horizontal vibrations may be generated. In this situation, the suspension unit in the conventional automatic washing machine may fail to sufficiently reduce the horizontal vibrations.
  • a conventional suspension may be disclosed in Korean Patent Application Publication No. 10-2013-56715 (published on May 30, 2013)
  • the present disclosure has been made in an effort to provide a suspension for a washing machine that can sufficiently absorb vibrations in both vertical and horizontal directions.
  • Exemplary embodiments of the present disclosure provide an apparatus for reducing vibrations in a washing machine, which is able to reduce horizontal vibrations of a drum in the automatic washing machine.
  • Embodiments of the present disclosure provide an apparatus for the reduction of vibrations in a washing machine including a rotatable drum configured to receive laundry; a stationary tub surrounding the drum and configured to hold water; a cabinet surrounding the stationary tub; a base under the stationary tub, configured to support components of the washing machine; suspension units connected to a lower side of the stationary tub and an upper side of the cabinet, configured to reduce vertical vibrations of the stationary tub; and one or more dampers coupled to the tub and the base, configured to reduce horizontal vibrations of the stationary tub.
  • the dampers may be sloped or in an inclined position when connected to a lower outer side of the stationary tub and to the base.
  • the dampers may be evenly positioned along an outer edge of the stationary tub such that the space between neighboring dampers is consistent or constant.
  • the dampers may comprise a coil spring, wherein one end of the spring is connected to a lower portion of the outer side of the stationary tub and another end is connected to the base.
  • the dampers may comprise a cone spring, having a diameter that increases from one of the stationary tub and the base to the other of the stationary tub and the base.
  • vibrations and noise produced by the washing machine can be absorbed and/or reduced by including dampers between the tub and the base.
  • FIG. 1 is a perspective view illustrating an exemplary washing machine according to embodiments of the present disclosure.
  • FIG. 2 is a cross-sectional view illustrating an exemplary apparatus for reduction of vibrations in the washing machine of FIG. 1 .
  • FIG. 3 is a perspective view schematically illustrating an exemplary apparatus for reduction of vibrations in the washing machine of FIG. 1 .
  • FIG. 4 is a cross-sectional view illustrating an exemplary apparatus for reduction of vibrations in a washing machine according to embodiments of the present disclosure.
  • Exemplary embodiments of the present disclosure illustrate ideal embodiments in more detail. As a result, various modifications of the drawings are expected. Accordingly, the exemplary embodiments are not limited to a specific form or illustrated region, and for example, include modifications of form (e.g., by manufacturing).
  • FIG. 1 is a perspective view illustrating a washing machine according to exemplary embodiments of the present disclosure
  • FIG. 2 is a cross-sectional view illustrating an exemplary apparatus for reduction of vibrations suitable for the washing machine of FIG. 1 according to embodiments of the present disclosure
  • FIG. 3 is a perspective view schematically illustrating the exemplary apparatus for reduction of vibrations in the washing machine of FIG. 1 according to embodiments of the present disclosure.
  • an apparatus for reduction of vibrations in a washing machine may comprise a tub 100 , a cabinet 200 , a base 300 , one or more suspension units 400 , and one or more dampers 500 .
  • the tub 100 may hold water and laundry in a washing machine 10 to substantially remove contaminants in the laundry and includes a rotatable drum 110 and a stationary tub 120 .
  • an embodiment of the present disclosure comprises the above-described configurations” is that an embodiment of the present disclosure does not consist of only the above-described configurations but may include other configurations (e.g., that are well known in the washing machine arts), as well as the above-mentioned configurations. However, since configurations well known in the art may obscure the subject matter of the present disclosure, the detailed description thereof may be omitted.
  • the drum 110 is in the stationary tub 120 and may hold laundry therein.
  • the washing machine 10 can supply water to the tub 120 and start a washing operation.
  • the washing machine 10 is configured to operate in a washing mode and a water removal mode. While operating in the washing mode or the water removal mode, the drum 110 may rotate to wash or remove water from the laundry.
  • the stationary tub 120 may hold water with the drum 110 therein.
  • the stationary tub 120 may be fixed without any rotation.
  • the cabinet 200 may accommodate the tub 100 , and as illustrated in FIGS. 1 and 2 , may cover the tub 100 so that the tub 100 is not seen from the outside and is protected from external impact.
  • the cabinet 200 may be a predetermined distance from an outer surface of the tub 100 .
  • the base 300 may be under the tub 100 to support the tub 100 or other components in the washing machine 10 .
  • a motor 310 may be in the base 300
  • the drum 110 and/or a pulsator 330 may be in the drum 110 and may rotate clockwise or counterclockwise via a shaft 320 coupled to the motor 310 .
  • the base 300 may be in the cabinet 200 so as not to be seen from the outside while being under the tub 100 as illustrated in FIG. 2 . Also, the base 300 may be seen from the outside when the cabinet 200 is coupled to an upper side of the base 300 .
  • suspension units 400 may be connected to a lower side of the tub 100 and an upper side of the cabinet 200 . This may reduce the vertical vibrations of and/or from the tub 100 .
  • the vertical vibrations or effects thereof may be reduced by the suspension unit 400 connecting the lower side of the tub 100 to the upper side of the cabinet 200 .
  • the horizontal vibrations may cause a collision between the drum 110 and the cabinet 200 .
  • drum when the laundry in the drum 110 is in a unbalanced state in which the laundry is agglomerated at a side of the drum 110 for example at a left or right side and/or an upper or lower side, the horizontal vibrations may increase.
  • the dampers 500 may effectively reduce the horizontal vibrations that may be generated by the tub 100 .
  • the dampers 500 may be between the tub 100 and the base 300 .
  • the dampers 500 may be sloped or in an inclined position (i.e., at an angle between vertical and horizontal) while connected between an outer lower side of the tub 100 and the base 300 .
  • the dampers 500 may include at least two dampers which are spaced at predetermined intervals along an outer edge of the tub 100 .
  • the dampers 500 includes four dampers which are spaced at equal intervals of 90 degrees, the number and angle of the dampers 500 may vary without departing from the spirit or scope of the subject matter presented here.
  • the dampers 500 may be implemented by a coil spring 510 , wherein one end of the coil spring is connected to an outer lower side of the tub 100 and the other end is connected to the base 300 . While FIG. 3 depicts dampers positioned near the corners of tub 100 and base 300 , the dampers 500 may be positioned at the midpoint between the corners, according to some embodiments. Similarly, the dampers 500 may be positioned at midpoints (e.g., at an angle or arc of about 45 degrees with respect to the center of the tub 100 and/or drum 110 ) between adjacent individual suspension units 400 .
  • the coil spring 510 may be or comprise a tensile spring providing an external force pulling the tub 100 toward the base 300 . Therefore, because the tensile force of the coil springs 510 is provided at constant intervals along the outer lower side of the tub 100 , the horizontal movement of the tub 100 may be suppressed or absorbed by the coil spring 510 . As a result, the horizontal vibrations generated by the tub 100 may be reduced.
  • the dampers 500 are between the outer lower side of the tub 100 and the base 300 and is sloped or inclined, it may reduce the vertical vibrations of the tub 100 that are not fully absorbed by the suspension unit 400 , as well as the horizontal vibrations generated in the tub 100 .
  • the suspension unit 400 may be configured to reduce vertical vibrations of a magnitude that are less than a predetermined maximum magnitude or value that may be generated by the tub 100 . This configuration may achieve a better result because vertical vibrations of an average magnitude are more frequently generated by the tub 100 . Vertical vibrations of a maximum magnitude may be quite rare.
  • vibrations generated by the tub 100 may be maximum magnitude vibrations (higher than the average value), and thus the suspension unit 400 may fail to completely reduce the maximum magnitude vibrations.
  • residual vertical vibrations which are not fully reduced by the suspension unit 400 may exist in the tub 100 .
  • the dampers 500 may reduce the residual vertical vibrations of the tub 100 .
  • the dampers 500 may absorb the residual vertical vibrations as well as the horizontal vibrations. Thus the vibrations and noise of the washing machine 10 may be greatly reduced.
  • the dampers 500 may be implemented in another form.
  • FIG. 4 is a cross-sectional view illustrating an apparatus for reduction of vibrations in a washing machine 10 according to an exemplary embodiment of the present disclosure.
  • the dampers 500 may be implemented by a cone spring 520 , having a diameter that increases from one of the tub 100 and the base 300 to the other of the tub 100 and the base 300 .
  • the portion of the cone spring connected to the washing tub unit 100 has a smaller diameter than the portion of the spring connected to the base unit 300 , and the diameter of the cone spring increases as it goes from the washing tub unit 100 to the base unit 300 .
  • the cone spring 520 is made by winding a spring steel in a conical form (e.g., around a cone-shaped anvil), and when the dampers 500 comprise a cone spring 520 , the dampers 500 may have greater elasticity in the length direction than the coil spring 510 , which may improve the vibration reducing force. When compressed, the coils may be aligned to fit within one another such that a fully compressed cone spring lies flat (e.g., no coil sits on another coil).

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
US14/169,055 2013-12-26 2014-01-30 Apparatus for reduction of vibration in washing machine Abandoned US20150184325A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020130164183A KR20150075835A (ko) 2013-12-26 2013-12-26 세탁기의 진동감쇄장치
KR10-2013-0164183 2013-12-26

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US (1) US20150184325A1 (zh)
KR (1) KR20150075835A (zh)
CN (1) CN104746296A (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018093139A1 (en) * 2016-11-21 2018-05-24 Samsung Electronics Co., Ltd. Washing machine
US11261556B2 (en) * 2017-08-04 2022-03-01 Qingdao Haier Washing Machine Co., Ltd. Washing machine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106702654B (zh) * 2015-11-12 2020-01-17 无锡小天鹅电器有限公司 洗衣机
CN108797003B (zh) * 2017-04-28 2021-04-20 无锡小天鹅电器有限公司 洗衣机
WO2019056672A1 (zh) * 2017-09-21 2019-03-28 无锡小天鹅股份有限公司 洗衣机

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2813415A (en) * 1953-10-20 1957-11-19 Westinghouse Electric Corp Laundry apparatus
US3385541A (en) * 1965-07-17 1968-05-28 Philips Corp Resilient supports for rotating machine parts
US5520029A (en) * 1995-10-06 1996-05-28 General Electric Company Coil spring and snubber suspension system for a washer
US5528913A (en) * 1994-08-01 1996-06-25 General Electric Company Washing machine with snubbers for limiting unbalanced load vibration excursions
US5606879A (en) * 1995-05-26 1997-03-04 General Electric Company Automatic washing machine suspension system
US5657649A (en) * 1994-09-01 1997-08-19 Daewoo Electronics Co., Ltd. Full-automatic washing machine having a vibration damping assembly
US5907880A (en) * 1997-05-15 1999-06-01 Electrolux Zanussi S.P.A. Method for providing active damping of the vibrations generated by the washing assembly of washing machines and washing machine implementing said method
US5946947A (en) * 1996-05-21 1999-09-07 Samsung Electronics Co., Ltd. Clothes washing machine having vibration and noise damper
US20110277514A1 (en) * 2009-01-06 2011-11-17 Lg Electronics Inc. Laundry machine
US20140223972A1 (en) * 2011-06-29 2014-08-14 Fisher & Paykel Appliances Limited Suspension unit and laundry washing machine
US20140230497A1 (en) * 2013-02-18 2014-08-21 Owens Corning Intellectual Capital, Llc Acoustically insulated machine

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2813415A (en) * 1953-10-20 1957-11-19 Westinghouse Electric Corp Laundry apparatus
US3385541A (en) * 1965-07-17 1968-05-28 Philips Corp Resilient supports for rotating machine parts
US5528913A (en) * 1994-08-01 1996-06-25 General Electric Company Washing machine with snubbers for limiting unbalanced load vibration excursions
US5657649A (en) * 1994-09-01 1997-08-19 Daewoo Electronics Co., Ltd. Full-automatic washing machine having a vibration damping assembly
US5606879A (en) * 1995-05-26 1997-03-04 General Electric Company Automatic washing machine suspension system
US5520029A (en) * 1995-10-06 1996-05-28 General Electric Company Coil spring and snubber suspension system for a washer
US5946947A (en) * 1996-05-21 1999-09-07 Samsung Electronics Co., Ltd. Clothes washing machine having vibration and noise damper
US5907880A (en) * 1997-05-15 1999-06-01 Electrolux Zanussi S.P.A. Method for providing active damping of the vibrations generated by the washing assembly of washing machines and washing machine implementing said method
US20110277514A1 (en) * 2009-01-06 2011-11-17 Lg Electronics Inc. Laundry machine
US20140223972A1 (en) * 2011-06-29 2014-08-14 Fisher & Paykel Appliances Limited Suspension unit and laundry washing machine
US20140230497A1 (en) * 2013-02-18 2014-08-21 Owens Corning Intellectual Capital, Llc Acoustically insulated machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018093139A1 (en) * 2016-11-21 2018-05-24 Samsung Electronics Co., Ltd. Washing machine
US10760195B2 (en) 2016-11-21 2020-09-01 Samsung Electronics Co., Ltd. Washing machine
US11427949B2 (en) 2016-11-21 2022-08-30 Samsung Electronics Co., Ltd. Washing machine
US11261556B2 (en) * 2017-08-04 2022-03-01 Qingdao Haier Washing Machine Co., Ltd. Washing machine

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Publication number Publication date
CN104746296A (zh) 2015-07-01
KR20150075835A (ko) 2015-07-06

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AS Assignment

Owner name: DONGBU DAEWOO ELECTRONICS CORPORATION, KOREA, REPU

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KIM, MAN KI;REEL/FRAME:032468/0698

Effective date: 20140313

STCB Information on status: application discontinuation

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