EP3092332A1 - Trommel mit verbesserter mechanischer festigkeit und herstellungsverfahren dafür - Google Patents

Trommel mit verbesserter mechanischer festigkeit und herstellungsverfahren dafür

Info

Publication number
EP3092332A1
EP3092332A1 EP14790636.6A EP14790636A EP3092332A1 EP 3092332 A1 EP3092332 A1 EP 3092332A1 EP 14790636 A EP14790636 A EP 14790636A EP 3092332 A1 EP3092332 A1 EP 3092332A1
Authority
EP
European Patent Office
Prior art keywords
drum
strengthening element
seam
sheet metal
present
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.)
Withdrawn
Application number
EP14790636.6A
Other languages
English (en)
French (fr)
Inventor
Uguray KALOGLU
Mecid FILIZ
Orhan Daioglu
Suat Oner ISIK
Faruk TURK
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.)
Arcelik AS
Original Assignee
Arcelik AS
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 Arcelik AS filed Critical Arcelik AS
Publication of EP3092332A1 publication Critical patent/EP3092332A1/de
Withdrawn legal-status Critical Current

Links

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
    • D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined 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
    • 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 that is suitable for using in laundry washing or washing-drying machines, and the production method thereof.
  • a washing machine drum which comprises a cylindrical body shell and circular front and rear lids, the peripheries of which are connected to the cylindrical shell by means of a seam, and wherein the strength of the said seam is increased against centrifugal forces by being circumferentially stamped.
  • the aim of the present invention is the realization of a drum, the mechanical strength of which is improved.
  • the drum realized in order to attaint the aim of the present invention, explicated in the first claim and the respective claims thereof comprises a seam that is produced by bending a sheet metal cylindrically and overlapping two opposite peripheries thereof, a cylindrical body that is formed by the cylindrically-shaped sheet metal, and a curved step that remains between the portion of the body that is produced by crushing and expanding the body and the mouth portion the diameter of which does not change.
  • the drum furthermore comprises a strengthening element that is disposed on the step so as to overlap with the seam.
  • the strengthening element on the step is shaped as an impression that is formed by inwardly denting the cylindrical outer surface of the drum body by circumferentially applying pressure from outside by means of a pressure apparatus.
  • the strengthening element on the step is shaped as an embossment that is formed by outwardly protruding the cylindrical inner surface of the drum body by circumferentially applying pressure from inside by means of a pressure apparatus.
  • more than one strengthening element is arranged on the step at intervals.
  • the step and hence the drum are strengthened along the periphery of the body.
  • a rectangular sheet metal is bent into a cylinder and the peripheries that face one another are joined forming a seam and thus, the hollow cylindrical body of the drum is formed.
  • the diameter of the body is increased by crushing and expanding the sheet metal.
  • the seam is crushed and two edges of the sheet metal are permanently joined while the strengthening element is formed by circumferentially applying pressure onto the body from outside or inside by means of a pressure apparatus, for example a steel roller or disc.
  • the drum is used in laundry washing machines.
  • the drum is used in laundry washing-drying machines.
  • Figure 1 – is the exploded view of a drum.
  • Figure 2 – is the partial perspective view of a drum related to an embodiment of the present invention.
  • Figure 3 – is the partial cross-sectional view of a drum related to an embodiment of the present invention.
  • the drum (1) comprises a sheet metal (2), a cylindrical body (3) that is formed by bending the sheet metal (2) into a cylinder, a seam (4) that is produced by overlapping the opposite peripheries of the sheet metal (2) on the body (3), and a step (5) that is formed by expanding the body (3) so that the diameters of the open mouths thereof remain the same.
  • the seam (4) is formed by bending the sheet metal (2) and joining the opposite peripheries thereof, the diameter of the body (3) is increased with the crushing process.
  • the step (5) is formed between the middle portion of the body (3) with a relatively larger diameter and the mouth portion thereof, the diameter of which is not changed.
  • the drum (1) of the present invention comprises a strengthening element (6) that is disposed on the step (5) so that at least some portion thereof is aligned with the seam (4) and that extends towards the center of the body (3) or in the reverse direction.
  • the strengthening element (6) increases the surface area over the step (5), thus decreases the stress acting on the step (5).
  • the strengthening element (6) is shaped as an impression which is formed by denting a strip ring-shaped narrow portion of the step (5) towards the inner area of the body (3) by circumferentially applying pressure from outside by means of a pressure apparatus, for example a steel roller or disc.
  • the impression-shaped strengthening element (6) extends towards the inner region of the drum (1).
  • the pressure apparatus crushes and smoothes the seam (4) apart from its function of forming the strengthening element (6).
  • the apparatus gains the feature of forming the strengthening element (6), thus decreasing production costs.
  • an additional production step is not required to form the strengthening element (6), since in the production step, wherein the seam (4) is smoothed, the strengthening element (6) is simultaneously formed.
  • the strengthening element (6) is shaped as an embossment that is formed by protruding the step (5) towards the outside of the body (3) by circumferentially applying pressure from inside by means of a pressure apparatus.
  • more than one strengthening element (6) is consecutively arranged along the circular line on the step (5).
  • the force on the step (5) acts on a wider surface at more than one point by means of the strengthening element (6).
  • the step (5) is crushed while the strengthening element (6) is formed, the dislocation density of the step (5) is increased at more than one point. Thus, a stronger structure is obtained.
  • the strengthening element (6) is elliptical.
  • the centrifugal force applied on the step (5) acts on a wider surface by means of the strengthening element (6), thereby decreasing deformation.
  • the production method of the drum (1) consists of the following steps:
  • the drum (1) is used in laundry washing machines.
  • the drum (1) is used in laundry washing-drying machines.
  • the strength of the body (3) is improved by increasing the dislocation density thereof thanks to the strengthening element (6) formed on the step (5).
  • stretching and tearing are prevented from occurring on the step (5) due to the centrifugal force acting on the body (3) during the rotation of the drum (1).
  • the laundry washer or dryer wherein the drum (1) is used is enabled to operate in a safer manner at the program steps that require high rotational speed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
EP14790636.6A 2013-12-27 2014-10-30 Trommel mit verbesserter mechanischer festigkeit und herstellungsverfahren dafür Withdrawn EP3092332A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201315401 2013-12-27
PCT/EP2014/073335 WO2015096924A1 (en) 2013-12-27 2014-10-30 A drum with improved mechanical strength and the production method thereof

Publications (1)

Publication Number Publication Date
EP3092332A1 true EP3092332A1 (de) 2016-11-16

Family

ID=51842541

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14790636.6A Withdrawn EP3092332A1 (de) 2013-12-27 2014-10-30 Trommel mit verbesserter mechanischer festigkeit und herstellungsverfahren dafür

Country Status (2)

Country Link
EP (1) EP3092332A1 (de)
WO (1) WO2015096924A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021200986A1 (de) 2021-02-03 2022-08-04 BSH Hausgeräte GmbH Verfahren zum Herstellen einer Mantelwand für eine Wäschetrommel mit einer Kompensationsprägung, Mantelwand für eine Wäschetrommel, sowie Wäschetrommel
DE102021200987A1 (de) 2021-02-03 2022-08-04 BSH Hausgeräte GmbH Verfahren zum Herstellen einer Wäschetrommel mit lagegenauer Positionierung einer Prägestruktur und Flutlöchern zueinander, sowie Wäschetrommel

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2214104B1 (es) 2002-07-03 2005-12-16 Bsh Electrodomesticos España, S.A. Tambor de lavadora.
ES2296424B1 (es) * 2004-02-06 2008-12-16 Bsh Electrodomesticos España S.A. Refuerzo para tambor de maquina lavadora.
ES2363789T3 (es) * 2006-10-19 2011-08-16 Electrolux Home Products Corporation N.V. Secadora por volteo.
IT1396539B1 (it) * 2009-11-26 2012-12-14 Qs Group S P A Procedimento e attrezzatura per la realizzazione di un cesto espanso per lavabiancheria, lavasciuga ed asciugatore.

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2015096924A1 *

Also Published As

Publication number Publication date
WO2015096924A1 (en) 2015-07-02

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Owner name: ARCELIK ANONIM SIRKETI

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