EP1922444A1 - A washer/dryer with a seam formed by bending the overlapping edges of the drum body and two circular lids - Google Patents

A washer/dryer with a seam formed by bending the overlapping edges of the drum body and two circular lids

Info

Publication number
EP1922444A1
EP1922444A1 EP06795729A EP06795729A EP1922444A1 EP 1922444 A1 EP1922444 A1 EP 1922444A1 EP 06795729 A EP06795729 A EP 06795729A EP 06795729 A EP06795729 A EP 06795729A EP 1922444 A1 EP1922444 A1 EP 1922444A1
Authority
EP
European Patent Office
Prior art keywords
drum
seam
washer
bending
dryer
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Withdrawn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
EP06795729A
Other languages
German (de)
French (fr)
Inventor
Ibrahim Yildirim
Sabih Hizal
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 EP1922444A1 publication Critical patent/EP1922444A1/en
Withdrawn legal-status Critical Current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

Definitions

  • This invention relates to a washer/dryer comprising a drum.
  • the seam (S) is formed by placing the lid (P) inside the body (G) at a small distance from the front edge of the body (G) and first folding the edge of the lid (P) so that the folded part of the lid (P) becomes parallel to the interior surface of the body (G), then folding it upwards so that it projects out of the body (G) and then folding it inwards outside the body (G). For this reason, the seam (S) forms a protrusion having a certain height (hi) on the body (G). As the drum (T) oscillates and vibrates during its rotation inside the tub (K), there has to be a certain distance (h2) between the drum (T) and the tub (K).
  • this distance (h2) is calculated with reference to the surface of the seam (S) but not to the surface of the body (G).
  • the distance (til) between the drum (T) and the tub (K) increases (hl+h2). This prevents the volume of the drum (K) from being increased.
  • the aim of the present invention is the realization of a drum the usable volume of which is increased by decreasing the distance between the drum and the tub.
  • the seams of the drum fastening together the body and the lids are bent towards the central axis of the drum.
  • the seam which is bent at a certain angle forms a truncated cone.
  • the height of the protrusion formed on the body by the seam which is bent towards the front surface of the front lid is reduced.
  • the seam is bent so that it is placed totally in front of the lid.
  • the seam does not form a protrusion on the body at all.
  • both of the seams fastening together the body and the front and back lids are bent.
  • Figure 1 - is the detail cross-sectional view of the seam of the drum in a washer/ dryer of the prior art.
  • Figure 2 - is a schematic view of a washer/dryer.
  • Figure 3 - is a cross-sectional view of the detail A of the drum.
  • Figure 4 - is a cross-sectional view of the detail B of the drum.
  • the washer/dryer (1) of the present invention comprises a tub (2) and a drum (3) placed inside this tub (2).
  • the drum (3) comprises,
  • the seam (6) forms a protrusion having a space underneath, projecting from the outer surface of the body (4) towards the tub (2).
  • a force on the seam (6) it is bent towards this space beneath, namely towards the axis (X) of the body or onto the lid (5, 50).
  • the bending process is performed throughout the circular path connecting the body (4) and the lid (5, 50) ( Figure 3).
  • both of the seams (6) between the front and back lids (5, 50) and the body (4) are bent.
  • the drum (3) comprises notches
  • the body (4) is formed by being rolled inwards instead of being rolled outwards and on the outer side of the lid (5), it projects from the inner surface of the sheet forming the body (4) towards the center of the body ( Figure 4).
  • the seam (6) does not form a protrusion that creates a dead volume on the body (4).
  • the washer dryer (1) comprises a tub (2) having seams (6) formed by bending the plates forming its side, front and back walls. These seams are bent so that they do not form a protrusion on side walls.
  • the outer surface of the body (4) is flattened.
  • the distance between the drum (3) and the tub (2) is reduced and it is enabled to increase the volume of the drum (3) without changing the volume of the tub (2).

Landscapes

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

Abstract

This invention relates to a washer/dryer comprising a drum (3) usable volume of which is increased by reducing the distance between the tub (2) and the drum (3). The drum comprises a seam (6) formed by bending the overlapping edges of the drum body (4) and the two circular lids (5, 50) exterior to the volume formed by the lids and the body, projecting from the outer surface of the body towards the tub, being in the form of a protrusion having a space underneath and bent towards this space, towards the central axis of the body or towards the lid.

Description

Description A WASHER/DRYER
[1] This invention relates to a washer/dryer comprising a drum.
[2] As it is known, in washer/dryers, laundry to be washed and/or dried are loaded into a perforated drum. This drum performs washing, drying and spinning processes by being driven by a motor.
[3] In the current state-of-the-art, to manufacture these drums (T), first the body (G) is formed by bending a rectangular metal sheet into a cylindrical form and fastening together the edges that are parallel to the rotational axis of the drum by bending them into a hooklike form. Then, circular metal plates forming the back and front lids (P) are mounted to the body (G). A circular seam (S) is formed by bending the overlapping edges of the back and front lids (P) and the body (G) into a hooklike form. The seam (S) is formed by placing the lid (P) inside the body (G) at a small distance from the front edge of the body (G) and first folding the edge of the lid (P) so that the folded part of the lid (P) becomes parallel to the interior surface of the body (G), then folding it upwards so that it projects out of the body (G) and then folding it inwards outside the body (G). For this reason, the seam (S) forms a protrusion having a certain height (hi) on the body (G). As the drum (T) oscillates and vibrates during its rotation inside the tub (K), there has to be a certain distance (h2) between the drum (T) and the tub (K). Due to the height (hi) of the protrusion formed by the seam (S) on the body (G), this distance (h2) is calculated with reference to the surface of the seam (S) but not to the surface of the body (G). Thus, the distance (til) between the drum (T) and the tub (K) increases (hl+h2). This prevents the volume of the drum (K) from being increased.
[4] The aim of the present invention is the realization of a drum the usable volume of which is increased by decreasing the distance between the drum and the tub.
[5] The washer/dryer realized in order to fulfill the objectives of the present invention is explicated in the attached claims.
[6] In the said washer/dryer, the seams of the drum fastening together the body and the lids are bent towards the central axis of the drum. Thus, the seam which is bent at a certain angle forms a truncated cone. The height of the protrusion formed on the body by the seam which is bent towards the front surface of the front lid is reduced.
[7] In one embodiment of the present invention, the seam is bent so that it is placed totally in front of the lid. In this embodiment, the seam does not form a protrusion on the body at all.
[8] In another embodiment of the present invention, there is a certain distance between the seam and the point where the bending starts. Thus, even if the seam is bent at a small angle, it does not form a protrusion on the body. [9] In an alternative embodiment of the present invention, only the seam fastening together the body and the front lid is bent. Since the attachment of the drum to the washer/dryer is made via the back lid, the amplitude of the oscillations is greater around the front lid. Bending the seams on the back lid provides a considerable gain in volume.
[10] In another embodiment of the present invention, both of the seams fastening together the body and the front and back lids are bent.
[11] The washer dryer realized in order to fulfill the objectives of the present invention is illustrated in the attached figures, where:
[12] Figure 1 - is the detail cross-sectional view of the seam of the drum in a washer/ dryer of the prior art.
[13] Figure 2 - is a schematic view of a washer/dryer.
[14] Figure 3 - is a cross-sectional view of the detail A of the drum.
[15] Figure 4 - is a cross-sectional view of the detail B of the drum.
[16] Elements shown in figures are numbered as follows:
[17] 1. Washer/dryer
[18] 2. Tub
[19] 3. Drum
[20] 4. Body
[21] 5. , 50. Lid
[22] 6. Seam
[23] The washer/dryer (1) of the present invention comprises a tub (2) and a drum (3) placed inside this tub (2).
[24] The drum (3) comprises,
[25] - a cylindrical body (4)
[26] - two circular lids (5, 50) mounted on the body (4), forming the front and back surfaces.
[27] - a seam (6) formed by bending the overlapping edges of the body (4) and the lids
(5, 50) (Figure 2)
[28] The seam (6) forms a protrusion having a space underneath, projecting from the outer surface of the body (4) towards the tub (2). By applying a force on the seam (6), it is bent towards this space beneath, namely towards the axis (X) of the body or onto the lid (5, 50). The bending process is performed throughout the circular path connecting the body (4) and the lid (5, 50) (Figure 3).
[29] In the present embodiment, by bending the seam (6), the height of the projection formed by the seam (6) out of the body (4) is reduced and the distance between the seam (6) and the tub (2) is increased. Thus, the distance required between the drum (3) and the tub (2) can be reduced. Although the protrusion formed by the seam (6) on the body (4) is not so high, bending the seam (6) saves a considerable cylindrical volume around the drum (3). This volume may be used to reduce the volumes of the drum (3) and the tub (2) simultaneously or to increase the volume of the drum (3) keeping the volume of the tub (2) unchanged. The bent seam (6) also provides for the structural reinforcement on the drum (3).
[30] In another embodiment of the present invention, there is a certain distance (m) between the point where the sheets of the lid (5, 50) and the body (4) overlap to form the drum (3) and the seam (6). Along this distance (m), there are only two layers of metal sheets forming the body (4) and the lid (5, 50). The bending process is started not right from the edge of the seam (6) but from a point within this distance (m). Thus, bending the seam (6) becomes easier and the seam is prevented from forming a protrusion on the body (4) (Figure 3).
[31] In another embodiment of the present invention, only the seam (6) between the front lid (5) and the body (4) is bent.
[32] In another embodiment of the present invention, both of the seams (6) between the front and back lids (5, 50) and the body (4) are bent.
[33] In yet another embodiment of the present invention, the drum (3) comprises notches
(not shown in figures) formed prior to the bending process providing for the easy bending of the seam (6) and preventing possible deformations on the plates that may occur during the bending process.
[34] In yet another embodiment of the present invention, the seam (6) between the lid (5,
50) and the body (4) is formed by being rolled inwards instead of being rolled outwards and on the outer side of the lid (5), it projects from the inner surface of the sheet forming the body (4) towards the center of the body (Figure 4). Thus, the seam (6) does not form a protrusion that creates a dead volume on the body (4).
[35] In yet another embodiment of the present invention, the washer dryer (1) comprises a tub (2) having seams (6) formed by bending the plates forming its side, front and back walls. These seams are bent so that they do not form a protrusion on side walls.
[36] By way of the washer/dryer (1) of the present invention, the outer surface of the body (4) is flattened. Thus, the distance between the drum (3) and the tub (2) is reduced and it is enabled to increase the volume of the drum (3) without changing the volume of the tub (2).

Claims

Claims
[1] A washer/dryer comprising a tub (2) and a drum (3) assembled into the tub (2), having a body (4) and two circular lids (5, 50) mounted on the body (4) forming its front and back surfaces, and characterized by a drum (3) comprising a seam (6) formed by bending the overlapping edges of the body (4) and the lids (5, 50), exterior to the volume formed by the lids (5, 50) and the body, projecting from the outer surface of the body (4) towards the tub (2), being in the form of a protrusion having a space underneath and bent towards this space, towards the central axis of the body or towards the lid (5, 50).
[2] A washer/dryer according to Claim 1, characterized by a drum (3) having a seam
(6), wherein there is a distance (m) between the seam (6) and the point where the lid (5, 50) and the body (6) overlap to form the drum (3) and wherein the seam (6) is bent from a point within this distance (m).
[3] A washer/dryer according to any one of the preceding claims, characterized by a drum (3) comprising notches formed prior to the bending process providing for the easy bending of the seam (6) and preventing possible deformations on the plates that may occur during the bending process.
EP06795729A 2005-08-22 2006-08-22 A washer/dryer with a seam formed by bending the overlapping edges of the drum body and two circular lids Withdrawn EP1922444A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200503343 2005-08-22
PCT/IB2006/052900 WO2007023453A1 (en) 2005-08-22 2006-08-22 A washer/dryer with a seam formed by bending the overlapping edges of the drum body and two circular lids

Publications (1)

Publication Number Publication Date
EP1922444A1 true EP1922444A1 (en) 2008-05-21

Family

ID=37507775

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06795729A Withdrawn EP1922444A1 (en) 2005-08-22 2006-08-22 A washer/dryer with a seam formed by bending the overlapping edges of the drum body and two circular lids

Country Status (2)

Country Link
EP (1) EP1922444A1 (en)
WO (1) WO2007023453A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013045300A1 (en) 2011-09-27 2013-04-04 Arcelik Anonim Sirketi A drum and the production method thereof

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100657465B1 (en) 2004-05-15 2006-12-13 엘지전자 주식회사 Drum manufacturing method of washing machine
ATE521747T1 (en) 2007-09-03 2011-09-15 Arcelik As DRYER
ES2332440B1 (en) * 2008-03-03 2011-01-31 Bsh Electrodomesticos España, S.A. WASHING DRUM FOR A WASHING MACHINE AND PROCEDURE FOR THE MANUFACTURE OF SUCH WASHING DRUM.
EP2362922B1 (en) * 2008-11-13 2012-07-11 Arçelik Anonim Sirketi A horizontal axis washing machine with recess in the tub to accomodate drum seam
TR201101157A2 (en) * 2011-02-08 2012-08-22 Bsh Ev Aletleri̇ San. Ve Ti̇c. A.Ş. A drum-type front-loading washing machine

Family Cites Families (6)

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Publication number Priority date Publication date Assignee Title
US1563822A (en) * 1923-12-17 1925-12-01 Conlon Corp Washing-machine cylinder
GB853824A (en) * 1957-11-22 1960-11-09 Laden S A Improvements in or relating to rotatable drums
DE1936017U (en) * 1965-08-31 1966-04-07 Constructa Werke G M B H WASHING MACHINE DRUM.
ES2214104B1 (en) * 2002-07-03 2005-12-16 Bsh Electrodomesticos España, S.A. WASHER DRUM.
EP1704274A1 (en) * 2003-11-20 2006-09-27 Arcelik Anonim Sirketi A drum with stiffening corrugations along the seam
DE102005023444A1 (en) * 2005-05-20 2006-11-23 BSH Bosch und Siemens Hausgeräte GmbH Drum with embossed seam

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007023453A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013045300A1 (en) 2011-09-27 2013-04-04 Arcelik Anonim Sirketi A drum and the production method thereof

Also Published As

Publication number Publication date
WO2007023453A1 (en) 2007-03-01

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