EP2812475B1 - Un module de cuve pour une machine à laver et un méthode de fabrication de celui-ci - Google Patents

Un module de cuve pour une machine à laver et un méthode de fabrication de celui-ci Download PDF

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Publication number
EP2812475B1
EP2812475B1 EP12720479.0A EP12720479A EP2812475B1 EP 2812475 B1 EP2812475 B1 EP 2812475B1 EP 12720479 A EP12720479 A EP 12720479A EP 2812475 B1 EP2812475 B1 EP 2812475B1
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EP
European Patent Office
Prior art keywords
piece
flange
fact
basic
drum
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.)
Active
Application number
EP12720479.0A
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German (de)
English (en)
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EP2812475A1 (fr
Inventor
Patrice NOCUS
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.)
Electrolux Laundry Systems France SNC
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Electrolux Laundry Systems France SNC
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Publication of EP2812475A1 publication Critical patent/EP2812475A1/fr
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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
    • D06F37/02—Rotary receptacles, e.g. drums
    • 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
    • D06F37/267—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups

Definitions

  • the present invention relates to washing machines, especially laundry washing machines.
  • the invention relates more particularly to a drum assembly for a washing machine and a method for fabricating the same.
  • a laundry washing machine is an appliance for removing dirt from laundry by using action of detergent and water.
  • washing machine may as well indicate a “simple” washing machine (i.e. a washing machine which can only wash and rinse the laundry) and a washing-drying machine (i.e. a washing machine which can also dry the laundry), both of the front-loading type and of the top-loading type.
  • washing machine refers to a barrier washing machine.
  • Barrier washing machines are generally used where total separation between the soiled laundry and the clean laundry is a requirement. This may be because of dust in a clean factory environment such as the electronics industry, or where radioactive dust particles may be the soiling, or in the health care world for surgical garments and dressings. The main use is in the health industry where garments and bedding are to be kept sealed and separate from the incoming soiled laundry.
  • a barrier washing machine typically comprises two doors, one front door for loading the machine with the dirty items to be washed and one back door for unloading the clean items once the wash cycle is completed.
  • the dirty zone cannot be in contact with the clean zone, therefore there must be a wall or panel to separate the dirty side and the clean side, thus allowing no contamination between the two sides.
  • FIGS 1a and 1b show, respectively in an exploded view and an assembled view, an example of a drum assembly for a barrier washing machine according to the prior art.
  • Document DE 100 03 474 A1 discloses a barrier washing machine with a locking system for an inner drum arranged in an outer drum assembly.
  • Document EP 0 869 213 A2 discloses a washing machine with a spin drum assembly arranged in an outer drum asembly.
  • the drum assembly 1' comprises a set of six basic parts which are welded together.
  • the drum assembly 1' comprises a basic drum part 2'a for receiving items to be washed on which three openings are made, i.e. a front opening 6'a, a back opening 6'b and a bottom opening 6'c.
  • An operating member 5' is intended to be placed inside the bottom opening 6'c, said operating member 5' comprising for example heating elements and a drain valve.
  • the drum assembly 1' also comprises two frameworks 3'a and 3'b for drum access, in particular for access inside the drum part 2'a, said two frameworks 3'a and 3'b respectively having an opening O' 1 and O' 2 defining the two drum openings O' 1 and O' 2 of the drum assembly 1' for loading and unloading the washing machine.
  • the opening O' 1 of the framework 3'a is intended to face the front opening 6'a of the drum part 2'a and the opening O' 2 of the framework 3'b is intended to face the back opening 6'b of the drum part 2'a.
  • two lateral fully circular retaining flanges 4'a and 4'b are provided with the drum assembly 1', intended to be placed on the periphery of the drum part 2'a. All parts of the drum assembly 1' are welded together to form the assembled drum assembly 1' as shown on figure 1b .
  • the invention aims to substantially satisfy these needs and to obviate the drawbacks mentioned above related to embodiments of the prior art.
  • the invention relates to an outer drum assembly for a washing machine, especially a laundry washing machine, and in particular a barrier washing machine, comprising :
  • extends only partly circumferentially it is meant that the circumferential, more specifically circular, periphery of at least one of said at least one piece of a basic drum part and said at least one piece of a flange is discontinuous.
  • at least one of said at least one piece of a basic drum part and said at least one piece of a flange does not extend 360 degrees about the rotational axis X of the drum assembly.
  • the present invention may show several advantages in terms of customer and financial benefits. It may be advantageous for the manufacturing of the drum assembly because of a less expensive and easier tooling for welding and less space for the storage of components. Moreover, the invention may be environmental-saving because less rough material, mainly stainless steel, is scrapped, and also timesaving because less manual finishing, such as grinding, is needed.
  • the drum assembly of the invention may further comprise one or more of the following features, considered singly or in any technically feasible combination.
  • the at least one piece of a basic drum part may comprise a single piece defining a basic drum part or several pieces defining together said basic drum part.
  • the at least one piece of a flange may comprise a single piece defining a flange, in particular a lateral flange of a basic drum part, or several pieces defining together said flange.
  • the at least one piece of a basic drum part and/or the at least one piece of a flange may not extend 360 degrees about the rotational axis of the drum assembly.
  • the at least one framework may be arranged to cooperate with said at least one piece of a basic drum part to extend circumferentially said at least one piece of a basic drum part.
  • the at least one framework may be arranged to define with said at least one piece of a basic drum part at least one part of a multipart basic drum part extending 360 degrees about the rotational axis of the drum assembly.
  • the at least one framework may thus be arranged to define with said at least one piece of a basic drum part a seeming basic drum part extending 360 degrees about the rotational axis of the drum assembly.
  • the at least one framework may comprise at least one outer flange portion arranged to cooperate with said at least one piece of a flange to extend circumferentially said at least one piece of a flange.
  • the at least one outer flange portion may be arranged to define with said at least one piece of a flange at least one part of a multipart lateral flange extending 360 degrees about the rotational axis of the drum assembly.
  • the at least one outer flange portion may thus be arranged to define with said at least one piece of a flange a seeming lateral flange extending 360 degrees about the rotational axis of the drum assembly.
  • the at least one outer flange portion may comprise a straight portion.
  • the at least one framework may comprise two outer flange portions arranged to cooperate with said at least one piece of a flange to extend circumferentially said at least one piece of a flange.
  • the two outer flange portions may each comprise a straight portion and may define together an angle strictly comprised between 0 and 180 degrees.
  • the drum assembly may comprise two pieces of a flange located on either side of said at least one piece of a basic drum part.
  • the drum assembly may comprise a front framework comprising a front drum opening and a back framework comprising a back drum opening.
  • the at least one piece of a basic drum part may define or may comprise a front opening and a back opening respectively intended to face said front opening and said back opening.
  • the drum assembly may comprise two separate pieces of a basic drum part, in particular an upper piece of a basic drum part and a lower piece of a basic drum part. Each may have a substantially arched form.
  • the drum assembly may comprise four pieces of a flange, i.e. a first upper piece of a flange and a first lower piece of a flange being located on one side of the at least one piece of a basic drum part, and a second upper piece of a flange and a second lower piece of a flange being located on the other side of said at least one piece of a basic drum part.
  • the four pieces of a retaining flange may each have a substantially arched form.
  • the drum assembly may comprise an operating member, including in particular heating elements and a drain valve.
  • the at least one piece of a basic drum part may comprise an opening, in particular a bottom opening, in which the operating member is located.
  • the invention relates to a washing machine, especially a laundry washing machine, characterized by the fact that it comprises a drum assembly as previously defined.
  • the washing machine may be a simple washing machine or a washing-drying machine.
  • the washing machine may be of the front-loading type or of the top-loading type.
  • the washing machine is a barrier washing machine.
  • the invention relates to a method for fabricating a drum assembly as previously defined characterized by the fact that it comprises the step of welding at least one piece of a flange to at least one framework.
  • the method of the invention may comprise one or several features mentioned above.
  • the method of the invention may comprise the step of welding at least one bended, or substantially arched, piece of a flange to at least one bended, or substantially arched, outer flange portion of a framework.
  • Figures 2a and 2b show a first embodiment of a drum assembly 1 according to the invention.
  • Figure 2a shows an exploded view of the drum assembly 1 while figure 2b shows the drum assembly 1 in an assembled state.
  • the drum assembly 1 is intended to be used in a washing machine, and preferably a laundry barrier washing machine.
  • the drum assembly 1 comprises two separate pieces of a basic drum part 2a and 2b, in particular an upper piece of a basic drum part 2a and a lower piece of a basic drum part 2b, in which the items, e.g. the laundry, are to be washed.
  • the drum assembly 1 also comprises two frameworks 3a and 3b, in particular a front framework 3a and a back framework 3b for respectively access inside the two pieces of a basic drum part 2a and 2b.
  • the drum assembled 1 further comprises four pieces of a flange 4a, 4b, 4c and 4d intended to be located at either the left periphery or the right periphery of the two pieces of a basic drum part 2a and 2b.
  • a first upper piece of a flange 4a faces the left periphery of the upper piece of a basic drum part 2a and a second upper piece of a flange 4b faces the right periphery of the upper piece of a basic drum part 2a.
  • a first lower piece of a flange 4c faces the left periphery of the lower piece of a basic drum part 2b and a second lower piece of a flange 4d faces the right periphery of the lower piece of a basic drum part 2b.
  • the lower piece of a basic drum part 2b also comprises a bottom opening 6c in order to place an operating member 5.
  • the operating member 5 may for example comprise heating elements and a drain valve.
  • the two pieces of a basic drum part 2a and 2b extend only partly circumferentially and each piece of a flange 4a, 4b, 4c and 4d also extends only partly circumferentially.
  • none of the two pieces of a basic drum part 2a, 2b and the four pieces of a flange 4a, 4b, 4c and 4d extends 360 degrees about the rotational axis X of the drum assembly 1.
  • Each piece of a flange 4a, 4b, 4c and 4d has a substantially arched form and so have the upper piece of a basic drum part 2a and the lower piece of a basic drum part 2b.
  • the upper piece of a basic drum part 2a and the lower piece of a basic drum part 2b define a front opening 6a and a back opening 6b, respectively facing a front drum opening O 1 of the front framework 3a and a back drum opening O 2 of the back framework 3b.
  • the front framework 3a and the back framework 3b are arranged to define with the upper piece of a basic drum part 2a and the lower piece of a basic drum part 2b all parts of a multipart basic drum part extending 360 degrees about the rotational axis X of the drum assembly 1.
  • Each framework 3a and 3b comprises an upper outer flange portion 7 and a lower outer flange portion 8.
  • the outer flange portions 7 and 8 are arranged to define with the four pieces of a flange 4a, 4b, 4c and 4d all parts of a left lateral flange and a right lateral flange extending 360 degrees about the rotational axis X of the drum assembly 1.
  • the outer flange portions 7 and 8 are straight portions defining together an angle ⁇ strictly comprised between 0 and 180 degrees, and preferably comprised between 90 and 180 degrees.
  • the method comprises the step of welding each piece of a flange 4a, 4b, 4c and 4d to the corresponding outer flange portions 7 and 8.
  • Figure 3 shows a second embodiment of a drum assembly 1 according to the invention.
  • the basic drum part 2a comprises only one piece and extends circumferentially discontinuously so as to define a front opening 6a which faces a front opening O 1 of a single front framework 3a.
  • Two pieces of a flange 4a and 4b are located on either side of the basic drum part 2a.
  • Each piece of a flange 4a and 4b extends over less than 360 degrees around the rotational axis X of the drum assembly 1.
  • the framework 3a comprises outer flange portions 7 and 8 intended to be welded to the two pieces of a flange 4a and 4b.
  • One set of two outer flange portions 7 and 8 of the framework 3a is arranged so as to extend circumferentially one piece of a flange 4a or 4b.
  • a seeming lateral flange in particular a multipart lateral flange, is formed which extends 360 degrees about the rotational axis X of the drum assembly 1.

Landscapes

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

Claims (15)

  1. Ensemble de cuve extérieure (1) pour une machine à laver comprenant :
    - au moins une pièce d'une partie de cuve de base (2a, 2b) pour recevoir des articles à laver, comprenant ou définissant au moins une ouverture (6a, 6b),
    - au moins un châssis (3a, 3b) comprenant une ouverture de cuve (O1, O2) destinée à faire face à ladite au moins une ouverture (6a, 6b) pour accéder à l'intérieur de ladite partie de cuve de base (2a, 2b),
    - au moins une pièce de bride (4a, 4b, 4c, 4d) destinée à être située au moins en partie au niveau d'une périphérie latérale de ladite au moins une pièce d'une partie de cuve de base (2a, 2b),
    caractérisé par le fait qu'au moins une de ladite au moins une pièce d'une partie de cuve de base (2a, 2b) et de ladite au moins une pièce d'une bride (4a, 4b, 4c, 4d) ne s'étend que partiellement circonférentiellement.
  2. Ensemble de cuve extérieure (1) selon la revendication 1, caractérisé par le fait que ladite au moins une pièce d'une partie de cuve de base (2a, 2b) ne s'étend que partiellement circonférentiellement et par le fait que ledit au moins un châssis (3a, 3b) est agencé pour coopérer avec ladite au moins une pièce d'une partie de cuve de base (2a, 2b) pour prolonger circonférentiellement ladite au moins une pièce d'une partie de cuve de base (2a, 2b), en particulier pour définir avec ladite au moins une pièce d'une partie de cuve de base (2a, 2b) au moins une partie d'une partie de cuve de base en plusieurs parties s'étendant sur 360 degrés autour de l'axe de rotation (X) de l'ensemble cuve (1).
  3. Ensemble de cuve extérieure (1) selon la revendication 1 ou 2, caractérisé par le fait que ladite au moins une pièce d'une bride (4a, 4b, 4c, 4d) ne s'étend que partiellement circonférentiellement et par le fait que ledit au moins un châssis (3a, 3b) comprend au moins une partie de bride extérieure (7, 8) agencée pour coopérer avec ledit au moins une pièce d'une bride (4a, 4b, 4c, 4d) pour prolonger circonférentiellement ladite au moins une pièce d'une bride (4a, 4b,4c, 4d) en particulier pour définir avec ladite au moins une pièce d'une bride (4a, 4b, 4c, 4d) au moins une partie d'une bride latérale en plusieurs parties s'étendant sur 360 degrés autour de l'axe de rotation (X) de l'ensemble de cuve (1).
  4. Ensemble de cuve extérieure (1) selon la revendication 3, caractérisé par le fait que ladite au moins une portion de bride extérieure (7, 8) comprend une partie droite.
  5. Ensemble de cuve extérieure (1) selon la revendication 3 ou 4, caractérisé par le fait que ledit au moins un châssis (3a, 3b) comprend deux parties de bride externe (7, 8) agencées pour coopérer avec ladite au moins une pièce d'une bride (4a,4b,4c,4d) pour prolonger circonférentiellement ladite au moins une pièce d'une bride (4a, 4b, 4c, 4d).
  6. Ensemble de cuve extérieure (1) selon la revendication 5, caractérisé par le fait que lesdites deux parties de bride externe (7, 8) comprennent chacune une partie droite.
  7. Ensemble de cuve extérieure (1) selon la revendication 5 ou 6, caractérisé par le fait que lesdites deux portions de rebord externes (7, 8) définissent conjointement un angle (a) strictement compris entre 0 et 180 degrés.
  8. Ensemble de cuve extérieure (1) selon une quelconque des revendications précédentes, caractérisé par le fait qu'il comprend deux pièces de bride (4a, 4b) situées de part et d'autre de ladite au moins une pièce d'une pièce de cuve de base (2a, 2b).
  9. Ensemble de cuve extérieure (1) selon une quelconque des revendications précédentes, caractérisé par le fait qu'il comprend un châssis avant (3a) comprenant une ouverture de cuve avant (O1) et un châssis arrière (3b) comprenant une ouverture de cuve arrière (O2), et par le fait que ladite au moins une pièce d'une partie de cuve de base (2a, 2b) définit ou comprend une ouverture avant (6a) et une ouverture arrière (6b) respectivement destinées à faire face à ladite ouverture avant (O1) et ladite ouverture arrière (O2).
  10. Ensemble de cuve extérieure (1) selon une quelconque des revendications précédentes, caractérisé par le fait qu'il comprend deux pièces distinctes d'une partie de cuve de base (2a, 2b), en particulier une pièce supérieure d'une partie de cuve de base (2a) et une pièce inférieure d'une partie de cuve de base (2b), ayant chacune une forme sensiblement arquée.
  11. Ensemble de cuve extérieure (1) selon une quelconque des revendications précédentes, caractérisé par le fait qu'il comprend quatre pièces d'une bride, une première pièce supérieure d'une bride (4a) et une première pièce inférieure d'une bride (4c) étant située sur un côté de ladite au moins une pièce d'une partie de cuve de base (2a, 2b), et une deuxième pièce supérieure d'une bride (4b) et une deuxième pièce inférieure d'une bride (4d) étant située de l'autre côté de ladite au moins une pièce d'une partie de cuve de base (2a, 2b), lesdites quatre pièces d'une bride (4a, 4b, 4c, 4d) ayant chacune une forme sensiblement arquée.
  12. Ensemble de cuve extérieure (1) selon une quelconque des revendications précédentes, caractérisé par le fait qu'il comprend un organe de commande (5), comprenant notamment des éléments chauffants et une vanne de vidange, et par le fait que ladite au moins une pièce d'une partie de cuve de base (2a, 2b) comprend une ouverture (6c), en particulier une ouverture inférieure (6c), dans laquelle se trouve ledit organe de commande (6c).
  13. Machine à laver caractérisée par le fait qu'elle comprend un ensemble de cuve extérieure (1) selon une quelconque des revendications précédentes.
  14. Machine à laver selon la revendication 13, caractérisée par le fait qu'il s'agit d'une machine à laver barrière.
  15. Procédé de fabrication d'un ensemble cuve de extérieure (1) selon une quelconque des revendications 1 à 12, caractérisé par le fait qu'il comprend l'étape de soudage d'au moins une pièce d'une bride (4a, 4b, 4c, 4d) à au moins un châssis (3a,3b).
EP12720479.0A 2012-02-09 2012-05-07 Un module de cuve pour une machine à laver et un méthode de fabrication de celui-ci Active EP2812475B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1200080 2012-02-09
PCT/EP2012/058378 WO2013117245A1 (fr) 2012-02-09 2012-05-07 Ensemble tambour pour machine à laver et son procédé de fabrication

Publications (2)

Publication Number Publication Date
EP2812475A1 EP2812475A1 (fr) 2014-12-17
EP2812475B1 true EP2812475B1 (fr) 2021-04-07

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EP12720479.0A Active EP2812475B1 (fr) 2012-02-09 2012-05-07 Un module de cuve pour une machine à laver et un méthode de fabrication de celui-ci

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EP (1) EP2812475B1 (fr)
WO (1) WO2013117245A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109252321B (zh) * 2018-05-08 2024-04-30 重庆市巫山城市建设(集团)有限公司 一种滚筒洗衣机

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0869213A3 (fr) * 1997-03-31 1999-02-03 White Consolidated Industries, Inc. Porte pour machine à laver à axe horizontal à chargement par le dessus
TR200200363T2 (tr) * 1998-11-09 2002-05-21 Fisher & Paykel Limited Üstten yüklemeli çamaşır makinesi
FR2788791B1 (fr) * 1999-01-27 2001-04-13 Electrolux Syst Blanchisserie Procede d'indexage en pratique d'un tambour de lave-linge et lave-linge mettant en oeuvre ce procede
FR2893955B1 (fr) * 2005-11-30 2007-12-28 Brandt Ind Sas Machine a laver et ou secher le linge munie d'une manchette de liaison cuve carrosserie et procede d'assemblage de ladite manchette

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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WO2013117245A1 (fr) 2013-08-15
EP2812475A1 (fr) 2014-12-17

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