EP2628840A1 - Washing machine with improved damper apparatus - Google Patents

Washing machine with improved damper apparatus Download PDF

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Publication number
EP2628840A1
EP2628840A1 EP12425032.5A EP12425032A EP2628840A1 EP 2628840 A1 EP2628840 A1 EP 2628840A1 EP 12425032 A EP12425032 A EP 12425032A EP 2628840 A1 EP2628840 A1 EP 2628840A1
Authority
EP
European Patent Office
Prior art keywords
dampers
cabinet
washing machine
pair
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
EP12425032.5A
Other languages
German (de)
French (fr)
Other versions
EP2628840B1 (en
Inventor
Silvano Fumagalli
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.)
Candy SpA
Original Assignee
Candy 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 Candy SpA filed Critical Candy SpA
Priority to ES12425032.5T priority Critical patent/ES2612911T3/en
Priority to EP12425032.5A priority patent/EP2628840B1/en
Priority to RU2013104461A priority patent/RU2628974C2/en
Priority to CN201310043032.5A priority patent/CN103255597B/en
Publication of EP2628840A1 publication Critical patent/EP2628840A1/en
Application granted granted Critical
Publication of EP2628840B1 publication Critical patent/EP2628840B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • 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
    • D06F37/26—Casings; Tubs
    • D06F37/261—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements
    • 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
    • D06F21/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement 

Definitions

  • the present invention relates to a washing machine with an improved damper apparatus.
  • Front or top loading washing machines are known, which are provided with a washing tub and dampers connected over and underneath the washing tub in order to damp the movements of the washing tub in the washing and centrifuge steps; the washing tubs are provided with counterweights, normally arranged below the washing tub, which help to reduce the axial shifting of the tub during the washing and centrifuge step of the drum within the washing tub.
  • the object of the present invention is to provide a washing machine with a damper apparatus which minimizes the axial shifting of the washing tub in the washing and centrifuge steps.
  • a washing machine comprising a cabinet where a washing tub is accommodated, comprising a rotatable drum for containing the laundry to be washed, said cabinet comprising a front wall and a back wall and said washing tub comprising a sidewall, characterized in that it comprises a pair of dampers anchored to the sidewall of the washing tub and to the front or back wall of the cabinet.
  • FIGS 1-3 show a washing machine with a damper apparatus according to an embodiment of the present invention.
  • the washing machine comprises a cabinet 1, where a washing device is accommodated, comprising a substantially cylindrical washing tub 2 of the traditional type containing a drum 3 which is rotatable with respect to a rotation axis A; rotation axis A preferably coincides with the central symmetry axis of washing tub 2.
  • the rotatable drum 3 is adapted to contain the laundry to be washed.
  • Tub 2 is elastically supported within cabinet 1 and is provided with all those devices to load and drain detergents and washing liquid, which belong to a traditional washing machine.
  • the washing machine also comprises counterweights 6 and 61 arranged over and underneath the washing tub 2, a motor 7 for moving drum 3 within the washing tub 2 and a zone 71 where the washing machine control devices, knobs, buttons, etc., are installed.
  • the washing machine comprises members 4, dampers or springs, anchored to the upper part 20 of the washing machine and to the top wall 10 of cabinet 1 and adapted to keep the washing tub 2 suspended within cabinet 1.
  • the washing machine also comprises a pair of dampers 5 anchored to the bottom 11 of cabinet 1 and to the lower part 21 of the washing tub 2.
  • Dampers 5 are preferably of the friction or hydraulic type and together with dampers or springs 4 they allow vibrations to be absorbed during the washing and/or centrifuge steps of the drum of the washing tub. Dampers 5 and dampers or springs 4 are preferably arranged along the suspension axis F.
  • Washing tub 2 is accommodated within cabinet 1 so that its base walls 23, 24 are opposite and preferably parallel to the back 12 and front 13 walls of cabinet 1, respectively; in the case of a front loading washing machine, front 13 and back 12 walls of cabinet 1 indicate the wall where the opening for loading the laundry to be washed is provided and the wall opposite thereto, respectively, while in the case of a top loading washing machine, they are the walls opposite to the base walls 23, 24 of the washing tub 2.
  • the base walls 23, 24 are opposite and preferably parallel to the back 12 and front 13 walls of cabinet 1
  • the circular sidewall 25 is opposite to sidewalls 14, 15 and to the top 10 and bottom 11 walls of cabinet 1.
  • the washing machine comprises a further pair of dampers 50 anchored to the circular sidewall 25 of the washing tub 2 and to the back 12 or front 13 wall of cabinet 1, preferably to the back wall 12 of cabinet 1.
  • the anchoring points of the dampers of said pair of dampers 50 on sidewall 25 of the washing tub 2 are preferably arranged in a substantially symmetric manner with respect to the vertical plane B, in particular orthogonally to the bottom wall 11 of cabinet 1, passing through the central axis A of the washing tub, and their distance D1 is less than diameter D of the washing tub 2.
  • the distance D1 of the anchoring points of the dampers of said pair of dampers 50 on the sidewall 25 of the washing tub is preferably longer than distance D2 between the anchoring points of dampers 5 on sidewall 25 of the washing tub.
  • the anchoring points of the dampers of said pair of dampers 50 are preferably arranged at a first distance T1 from bottom 11 of cabinet 1 longer than the second distance T2 of the anchoring points of dampers 5 on the sidewall of the washing tub from bottom 11 of the cabinet and shorter than distance T between the central axis A and bottom 11 of cabinet 1. In this way, the size of cabinet 1 and of washing tub 2 does not need to be changed with respect to known washing machines.
  • the anchoring points of dampers 50 on sidewall 25 of the washing tub 2 are at a certain distance F1 with respect to the suspension axis F passing through dampers 5 and springs or dampers 4.
  • the dampers of said pair of dampers 50 are preferably arranged substantially parallel to bottom 11 of cabinet 1 of the washing machine.
  • Dampers 50 preferably are of the friction or hydraulic type with a piston 51 sliding within a cylinder 52. Cylinder 52 is anchored to the back or front wall of cabinet 1 by means of a joint 53.
  • Joint 53 may be of the universal type and is connected to the front or back wall of cabinet 1 so that the cylinder may oscillate in horizontal direction ( figure 4 ) or in vertical direction ( figure 5 ).
  • dampers 50 limit the oscillations of the tub assembly 200 in the vertical direction and may be considered as a system for correcting the oscillation of the tub assembly 200.
  • dampers 50 limit the crosswise oscillations of the tub assembly 200 while promoting the oscillations thereof along the vertical direction.
  • dampers 50 are provided with a ball and socket joint 54 which allows the oscillations thereof in any direction ( figure 6 ).
  • the washing machine shown in figures 1-3 is of the front loading type
  • the washing machine according to a variation of the embodiment of the present invention may be of the top loading type, as shown in figures 7 and 8 ; in this case, dampers 50 are again anchored to sidewall 25 of the washing tub 2 and to the walls of cabinet 1, opposite to the base walls 23, 24 of the washing tub, but as only difference with respect to the washing machine in figures 1-3 , the anchoring position of dampers 50 to sidewall 25 of the washing tub may preferably be arranged on axis F of the standard connection of the washing tub 2 with cabinet 1, i.e. substantially along the suspension axis F where the anchoring of dampers 5 occurs.
  • the top loading washing machine in figures 7 and 8 also comprises counterweights 62, 63 different from counterweights 6, 61 of the front loading washing machine in figures 1-3 .

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)

Abstract

A washing machine is described, comprising a cabinet (1) where a washing tub (2) is accommodated, comprising a rotatable drum (3) for containing the laundry to be washed; the cabinet comprises a front wall (13) and a back wall (12), and the washing tub comprises a sidewall (25). The washing machine comprises a pair of dampers (50) anchored to the sidewall (25) of the washing tub and to the front (13) or back (12) wall of the cabinet.

Description

  • The present invention relates to a washing machine with an improved damper apparatus.
  • Front or top loading washing machines are known, which are provided with a washing tub and dampers connected over and underneath the washing tub in order to damp the movements of the washing tub in the washing and centrifuge steps; the washing tubs are provided with counterweights, normally arranged below the washing tub, which help to reduce the axial shifting of the tub during the washing and centrifuge step of the drum within the washing tub.
  • The object of the present invention is to provide a washing machine with a damper apparatus which minimizes the axial shifting of the washing tub in the washing and centrifuge steps.
  • According to the present invention, said object is achieved by a washing machine comprising a cabinet where a washing tub is accommodated, comprising a rotatable drum for containing the laundry to be washed, said cabinet comprising a front wall and a back wall and said washing tub comprising a sidewall, characterized in that it comprises a pair of dampers anchored to the sidewall of the washing tub and to the front or back wall of the cabinet.
  • The features and advantages of the present invention will be more apparent from the following detailed description of a practical embodiment thereof, disclosed by way of non-limiting example with reference to the accompanying drawings, in which:
    • figure 1 shows a schematic front view of a front loading washing machine provided with a damper apparatus according to an embodiment of the present invention;
    • figure 2 shows a schematic side view of the washing machine in figure 1;
    • figure 3 shows a schematic top view of the washing machine in figure 1;
    • figures 4 and 5 show schematic views of a joint for the pair of dampers of the washing machine according to the present invention;
    • figure 6 shows a schematic view of a different type of joint for the pair of dampers of the washing machine according to the present invention;
    • figure 7 shows a schematic front view of a top loading washing machine provided with a damper apparatus according to a variation of the embodiment of the present invention;
    • figure 8 shows a schematic side view of the top loading washing machine in figure 7.
  • Figures 1-3 show a washing machine with a damper apparatus according to an embodiment of the present invention. The washing machine comprises a cabinet 1, where a washing device is accommodated, comprising a substantially cylindrical washing tub 2 of the traditional type containing a drum 3 which is rotatable with respect to a rotation axis A; rotation axis A preferably coincides with the central symmetry axis of washing tub 2. The rotatable drum 3 is adapted to contain the laundry to be washed.
  • Tub 2 is elastically supported within cabinet 1 and is provided with all those devices to load and drain detergents and washing liquid, which belong to a traditional washing machine.
  • The washing machine also comprises counterweights 6 and 61 arranged over and underneath the washing tub 2, a motor 7 for moving drum 3 within the washing tub 2 and a zone 71 where the washing machine control devices, knobs, buttons, etc., are installed.
  • The washing machine comprises members 4, dampers or springs, anchored to the upper part 20 of the washing machine and to the top wall 10 of cabinet 1 and adapted to keep the washing tub 2 suspended within cabinet 1. The washing machine also comprises a pair of dampers 5 anchored to the bottom 11 of cabinet 1 and to the lower part 21 of the washing tub 2. Dampers 5 are preferably of the friction or hydraulic type and together with dampers or springs 4 they allow vibrations to be absorbed during the washing and/or centrifuge steps of the drum of the washing tub. Dampers 5 and dampers or springs 4 are preferably arranged along the suspension axis F.
  • Washing tub 2 is accommodated within cabinet 1 so that its base walls 23, 24 are opposite and preferably parallel to the back 12 and front 13 walls of cabinet 1, respectively; in the case of a front loading washing machine, front 13 and back 12 walls of cabinet 1 indicate the wall where the opening for loading the laundry to be washed is provided and the wall opposite thereto, respectively, while in the case of a top loading washing machine, they are the walls opposite to the base walls 23, 24 of the washing tub 2. Considering the front loading washing machine described in figures 1-3, the base walls 23, 24 are opposite and preferably parallel to the back 12 and front 13 walls of cabinet 1, and the circular sidewall 25 is opposite to sidewalls 14, 15 and to the top 10 and bottom 11 walls of cabinet 1.
  • The washing tub 2 together with rotatable drum 3 and motor 7 form a tub assembly 200 supported by springs 4 and dampers 5.
  • If the vibrations generated by the tub assembly 200 are transmitted to cabinet 1, they reduce the reliability of the washing machine and may generate an annoying noise.
  • According to the present invention, in order to minimize the vibrations transmitted by the tub assembly 200 and in particular the axial shifting of the washing tub 2 in the washing and centrifuge steps, the washing machine comprises a further pair of dampers 50 anchored to the circular sidewall 25 of the washing tub 2 and to the back 12 or front 13 wall of cabinet 1, preferably to the back wall 12 of cabinet 1.
  • The anchoring points of the dampers of said pair of dampers 50 on sidewall 25 of the washing tub 2 are preferably arranged in a substantially symmetric manner with respect to the vertical plane B, in particular orthogonally to the bottom wall 11 of cabinet 1, passing through the central axis A of the washing tub, and their distance D1 is less than diameter D of the washing tub 2.
  • The distance D1 of the anchoring points of the dampers of said pair of dampers 50 on the sidewall 25 of the washing tub is preferably longer than distance D2 between the anchoring points of dampers 5 on sidewall 25 of the washing tub.
  • The anchoring points of the dampers of said pair of dampers 50 are preferably arranged at a first distance T1 from bottom 11 of cabinet 1 longer than the second distance T2 of the anchoring points of dampers 5 on the sidewall of the washing tub from bottom 11 of the cabinet and shorter than distance T between the central axis A and bottom 11 of cabinet 1. In this way, the size of cabinet 1 and of washing tub 2 does not need to be changed with respect to known washing machines.
  • Preferably, the anchoring points of dampers 50 on sidewall 25 of the washing tub 2 are at a certain distance F1 with respect to the suspension axis F passing through dampers 5 and springs or dampers 4.
  • The dampers of said pair of dampers 50 are preferably arranged substantially parallel to bottom 11 of cabinet 1 of the washing machine.
  • Dampers 50 preferably are of the friction or hydraulic type with a piston 51 sliding within a cylinder 52. Cylinder 52 is anchored to the back or front wall of cabinet 1 by means of a joint 53.
  • Joint 53 may be of the universal type and is connected to the front or back wall of cabinet 1 so that the cylinder may oscillate in horizontal direction (figure 4) or in vertical direction (figure 5). With the universal joint connected to the front or back wall of cabinet 1 as shown in figure 4, dampers 50 limit the oscillations of the tub assembly 200 in the vertical direction and may be considered as a system for correcting the oscillation of the tub assembly 200. With the universal joint connected to the front or back wall of cabinet 1 as shown in figure 5, dampers 50 limit the crosswise oscillations of the tub assembly 200 while promoting the oscillations thereof along the vertical direction.
  • As an alternative to the universal joint 53, dampers 50 are provided with a ball and socket joint 54 which allows the oscillations thereof in any direction (figure 6).
  • While the washing machine shown in figures 1-3 is of the front loading type, the washing machine according to a variation of the embodiment of the present invention may be of the top loading type, as shown in figures 7 and 8; in this case, dampers 50 are again anchored to sidewall 25 of the washing tub 2 and to the walls of cabinet 1, opposite to the base walls 23, 24 of the washing tub, but as only difference with respect to the washing machine in figures 1-3, the anchoring position of dampers 50 to sidewall 25 of the washing tub may preferably be arranged on axis F of the standard connection of the washing tub 2 with cabinet 1, i.e. substantially along the suspension axis F where the anchoring of dampers 5 occurs. The top loading washing machine in figures 7 and 8 also comprises counterweights 62, 63 different from counterweights 6, 61 of the front loading washing machine in figures 1-3.

Claims (11)

  1. A washing machine comprising a cabinet (1) where a washing tub (2) is accommodated, comprising a rotatable drum (3) for containing the laundry to be washed, said cabinet comprising a front wall (13) and a back wall (12) and said washing tub comprising a sidewall (25), characterized in that it comprises a pair of dampers (50) anchored to the sidewall (25) of the washing tub and to the front (13) or back (12) wall of the cabinet.
  2. A washing machine according to claim 1, characterized in that the anchoring points of the dampers (50) of said pair of dampers are symmetrically arranged with respect to the vertical plane (B) passing through the symmetry axis (A) of the washing tub and their distance (D1) is less than the diameter (D) of the washing tub.
  3. A washing machine according to claim 2, characterized in that it comprises a further pair of dampers (5) anchored to the lower part (21) of the washing tub (2) and to the bottom (11) of the cabinet.
  4. A washing machine according to claim 3, characterized in that the distance (D1) of the anchoring points of the dampers (50) of said pair of dampers on the sidewall of the washing tub is longer than the distance (D2) between the anchoring points of the dampers (5) of said further pair of dampers on the sidewall of the washing tub.
  5. A washing machine according to claim 4, characterized in that the anchoring points of the dampers of said pair of dampers are arranged at a distance (T1) from the bottom (11) of the cabinet longer than the distance (T2) again from the bottom (11) of the cabinet at which the anchoring points of the dampers of said further pair of dampers on the sidewall of the washing tub are arranged, and shorter than the distance (T) of the symmetry axis (A) from the cabinet bottom.
  6. A washing machine according to any one of the preceding claims, characterized in that the dampers (50) of said pair of dampers are arranged substantially parallel to the cabinet bottom.
  7. A washing machine according to any one of the preceding claims, characterized in that the anchoring points of the dampers (50) of said pair of dampers are arranged substantially along the suspension axis (F) of the washing tub (2).
  8. A washing machine according to any one of the preceding claims, characterized in that the dampers of said pair of dampers are anchored to the back or front wall of the cabinet by means of universal joints (53).
  9. A washing machine according to claim 8, characterized in that said universal joints are adapted to allow a vertical oscillation of the dampers of said pair of dampers.
  10. A washing machine according to claim 8, characterized in that said universal joints are adapted to allow a horizontal oscillation of the dampers of said pair of dampers.
  11. A washing machine according to any one of claims 1 to 7, characterized in that the dampers of said pair of dampers are anchored to the back or front wall of the cabinet by means of ball and socket joints (54).
EP12425032.5A 2012-02-16 2012-02-16 Washing machine with improved damper apparatus Active EP2628840B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ES12425032.5T ES2612911T3 (en) 2012-02-16 2012-02-16 Washing machine with improved shock absorber
EP12425032.5A EP2628840B1 (en) 2012-02-16 2012-02-16 Washing machine with improved damper apparatus
RU2013104461A RU2628974C2 (en) 2012-02-16 2013-02-01 Washing machine with improved shock absorber
CN201310043032.5A CN103255597B (en) 2012-02-16 2013-02-04 Washing machine with the damping device improved

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12425032.5A EP2628840B1 (en) 2012-02-16 2012-02-16 Washing machine with improved damper apparatus

Publications (2)

Publication Number Publication Date
EP2628840A1 true EP2628840A1 (en) 2013-08-21
EP2628840B1 EP2628840B1 (en) 2016-11-02

Family

ID=45937173

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12425032.5A Active EP2628840B1 (en) 2012-02-16 2012-02-16 Washing machine with improved damper apparatus

Country Status (4)

Country Link
EP (1) EP2628840B1 (en)
CN (1) CN103255597B (en)
ES (1) ES2612911T3 (en)
RU (1) RU2628974C2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111819321A (en) * 2018-03-08 2020-10-23 V-楚格股份公司 Washing machine with reduced vibration
WO2020216457A1 (en) * 2019-04-26 2020-10-29 V-Zug Ag Vibration-reduced washing machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110409123B (en) * 2018-04-28 2022-04-19 青岛海尔洗涤电器有限公司 Clothes treating apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5528913A (en) * 1994-08-01 1996-06-25 General Electric Company Washing machine with snubbers for limiting unbalanced load vibration excursions
US20110041563A1 (en) * 2009-08-24 2011-02-24 Samsung Electroincs Co., Ltd. Washing machine and outer tub supporting structure thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63212400A (en) * 1987-02-27 1988-09-05 松下電器産業株式会社 Vibration isolation device for dehydrating washing machine
CN201027253Y (en) * 2007-01-24 2008-02-27 许继海 Inclined horizontal drum washing machine with concave water tank
CN102061588B (en) * 2009-11-16 2014-02-05 海尔集团公司 Washing machine, washing method and washing barrel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5528913A (en) * 1994-08-01 1996-06-25 General Electric Company Washing machine with snubbers for limiting unbalanced load vibration excursions
US20110041563A1 (en) * 2009-08-24 2011-02-24 Samsung Electroincs Co., Ltd. Washing machine and outer tub supporting structure thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111819321A (en) * 2018-03-08 2020-10-23 V-楚格股份公司 Washing machine with reduced vibration
WO2020216457A1 (en) * 2019-04-26 2020-10-29 V-Zug Ag Vibration-reduced washing machine

Also Published As

Publication number Publication date
CN103255597B (en) 2016-12-28
RU2013104461A (en) 2014-08-10
CN103255597A (en) 2013-08-21
RU2628974C2 (en) 2017-08-23
EP2628840B1 (en) 2016-11-02
ES2612911T3 (en) 2017-05-19

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