EP2002047A1 - A noise-reduced tub for a washer/dryer - Google Patents

A noise-reduced tub for a washer/dryer

Info

Publication number
EP2002047A1
EP2002047A1 EP07727542A EP07727542A EP2002047A1 EP 2002047 A1 EP2002047 A1 EP 2002047A1 EP 07727542 A EP07727542 A EP 07727542A EP 07727542 A EP07727542 A EP 07727542A EP 2002047 A1 EP2002047 A1 EP 2002047A1
Authority
EP
European Patent Office
Prior art keywords
tub
cover
washer
dryer
chamber
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
EP07727542A
Other languages
German (de)
French (fr)
Other versions
EP2002047B1 (en
Inventor
Levent Gokkus
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 EP2002047A1 publication Critical patent/EP2002047A1/en
Application granted granted Critical
Publication of EP2002047B1 publication Critical patent/EP2002047B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • D06F37/262—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements made of plastic material, e.g. by injection moulding
    • 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
    • D06F37/264—Tubs provided with reinforcing structures, e.g. ribs, inserts, braces

Definitions

  • the present invention relates to a washer/dryer comprising a plastic tub.
  • the washer/dryers comprise a drum, having ribs of various sizes and nurrbers for increasing the washing effectiveness by moving the laundry emplaced therein, a tub inside which the tub is situated and a pulley attached to the drum shaft, providing the drum to rotate within the tub by transferring the motion received from the motor to the shaft.
  • the shaft with one end connected to the hub of the pulley and the other end to the drum, is beared on the rear wall of the tub.
  • the support elements which encircle the hub and extend adjacently from the hub towards the rear wall spaced with certain intervals and gaps in between these support elements are provided. These support elements yield a rigid structure while supporting the hub through which the shaft is inserted and the gaps between the support elements provide the tub to be lightweight.
  • the objective of the present invention is to design a washer/dryer comprising a tub wherein the noise generated by the rotation of the pulley and the temperature loss are minimized.
  • the washer/dryer designed to fulfill the object of the present invention, explicated in the first claim and the respective claims thereof, comprises a cover produced as a single piece with the tub in the mould, extending out from the rear wall, provides to form an air filled insulation chamber by being bended over and covering the hollow chanter next to the support element after the tub is taken out of the mould.
  • the rear wall of the tub is provided with heat and sound insulation feature by covering over the charrbers between the support elements such that air is trapped therein, minimizing both noise and heat transfer.
  • the cover is formed on at least one of the walls bounding the charrber between two adjacent support elements.
  • One side of the cover is joined as a single piece to one of the walls bounding the charrber in the mould and the other sides move by turning around this side.
  • one side of the cover is formed on the support elements adjacent to the charrber.
  • one side of the cover is attached on the support element, the side opposite to this side moves, bending over the adjacent support element such that there is a charrber in between the two support elements.
  • the cover is fixed on the support element by any attachment method.
  • the covers are dimensioned such that the charrber is entirely or partially covered.
  • the cover When the cover is closed over the charrber, it can be fixed by any fixation method (press-fitting, snap-fitting, adhesion, screwing etc.) on the charrber.
  • both heat and sound insulation is provided on the rear wall of the tub with the covers formed in a single piece with the tub during the production of the plastic tub.
  • Figure 1 - is the schematic view of a washer/dryer.
  • Figure 2 - is the perspective view of an embodiment of the tub.
  • Figure 3 - is the perspective view of another embodiment of the tub.
  • the washer/dryer (1) of the present invention comprises a drum (2) wherein the laundry to be washed is emplaced, a tub @ made of plastic material, in which the drum (2) moves, a motor (7) situated outside the tub @ providing to drive the drum (2), a pulley (10) transferring the movement received from the motor (7) and a shaft (11) one end of which is fixed to the pulley (10) and the other end to the drum (2), transferring the movement to the drum (2) and beared in the tub @ ( Figure 1)
  • the tub @ comprises a rear wall (4), one or more support elements (5) situated on this rear wall (4) and one or more charrbers (6) arranged in between the support elements (5)
  • the washer/dryer (1) comprises one or more covers (8) produced in a single piece with the tub @ in the mould, on at least one of the sides bounding the charrber (6) situated at the rear wall (4), extending out from the surface of the rear wall (4), providing to form an air-filled insulated charrber (6) partially or entirely covering the charrber (6) by being bended over after the tub @ has been taken out of the mould.
  • At least one side of the cover (8) is joined as a single piece to the wall bounding the chanter (6) in the mould and the other sides, turning around this side, bear on the support elements (5) bounding the charrber (6) and cover over the charrber (6) that is in between the support elements (5)
  • the chambers (8) in between the support elements (5) are enclosed by the covers (8) situated on the tub @ and produced as a single piece with the tub @ in the mould, forming an air-filled chamber (8), minimizing both heat transfer and noise, providing the heat and sound insulation feature to the rear wall (4) of the tub ty.
  • the cover (8) is situated on the wall of the support element (5) adjacent to the chamber (6)
  • one side of the cover (8) is conjoint with the support element (5) in the mould, and when this side is bended, the other side bears on the other support element (5) such that there is a chamber (6) in between the two adjacent support elements (5)
  • the side of the cover (8) bearing on the support element (5) is fixed on the support element (5) by any fixation method. Consequently, the cover (8) extends such that it is between the adjacent support elements (5) and the top of the chamber (6) between two support elements (5) is enclosed ( Figure 3)
  • the washer/dryer (1) comprises a hub (9) on the tub @ rear wall (4), bearing the shaft (11) to which the drum (2) and the pulley (10) are fixed to each of its ends.
  • the support elements (5) situated on the rear wall (4) and the chambers (6) between the support elements (5) encircle the hub (9), extending from the hub (9) to the perimeter of the tub $
  • the cover (8) is situated on the wall of the chamber (6) adjacent to the hub (9) In this embodiment, when the cover (8) is bended towards the rear wall (4), the top of the chamber (6) is enclosed by bearing on the two support elements (5) ( Figure 2)
  • the cover (8) produced in a single piece with the tub @; the portion thereof attached to the rear wall (4) is comparably thinner than its other portions and accordingly serves as hinge.
  • the tub @ comprises a locking mechanism preferably formed of protrusions and recesses situated on the opposite sides of the support element (5) and on the side of the cover (8) bearing on the support element (5) providing the cover (8) to be fixed to the support element (5)
  • the cover (8) is closed on the chamber (6) in a shape locking manner with the rear wall (4)
  • the cover (8) is closed on the chanter (6) by press-fitting.
  • cover (8) is fixed over the support elements (5) by any fixing method (snap-fitting, adhesion, screwing etc.) such that there is a charrber (6) there between.
  • the drum (2) of the washer/dryer (1) of the present invention can either be driven by a belt-pulley (10) or by a direct drive motor (7)

Landscapes

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

Abstract

The washer/dryer (1) of the present invention comprises a drum (2) wherein the laundry to be washed is emplaced, a tub (3) in which the drum (2) moves, a motor (7) situated outside the tub (3) and providing to drive the drum (2), a pulley (10) transferring the movement received from the motor (7) and a shaft (11) beared in the tub (3) one end of which is fixed to the pulley (10) and the other end to the drum (2). Between the reinforcing ribs on the tub are one or more air filled chambers (8) , helping to reduce noise during movement of the pulley in the vicinity of the tub.

Description

Description
A NOISE-REDUCED TUB FOR A WASHER/DRYER
[0001] The present invention relates to a washer/dryer comprising a plastic tub.
[0002] The washer/dryers comprise a drum, having ribs of various sizes and nurrbers for increasing the washing effectiveness by moving the laundry emplaced therein, a tub inside which the tub is situated and a pulley attached to the drum shaft, providing the drum to rotate within the tub by transferring the motion received from the motor to the shaft. The shaft, with one end connected to the hub of the pulley and the other end to the drum, is beared on the rear wall of the tub.
[0003] On the rear wall of the tub, the support elements which encircle the hub and extend adjacently from the hub towards the rear wall spaced with certain intervals and gaps in between these support elements are provided. These support elements yield a rigid structure while supporting the hub through which the shaft is inserted and the gaps between the support elements provide the tub to be lightweight.
[0004] There are also support elements arranged at certain intervals on the pulley, with a similar structure as that of the tub rear wall, extending between the pulley hub and its perimeter providing to support the hub of the pulley.
[0005] When the pulley is mounted to the end of the shaft, there is a certain gap left between the tub rear wall and itself. The gaps situated on the rear wall of the tub generate a noise due to the air movements during the activation of the pulley. Particularly in the spinning phase wherein the drum rotates at high speed, an air movement is created between the tub rear wall and the pulley. Noise is generated due to this air movement.
[0006] In the state of the art, various implementations have been developed in order to prevent the noise generated in the gaps situated on the tub rear wall between the tub and the pulley due to the rotation of the pulley.
[0007] In the state of the art United States of America Patent no. US5263343, the explanation is given for the tub of a washing machine including an outer surface having a plurality of outwardly open recesses, and thermal insulating panels disposed in respective ones of said recesses. Both sound and heat transfer are minimized by disposing these insulating panels in these recesses.
[0008] In the state of the art European Patent Application no. EP1431439 a pulley wheel that drives the drum of the washing machine is explained. The gaps between the pulley strengthening ribs are covered in order to minimize the sound between the pulley wheel and the rear wall of the tub.
[0009] In the state of the art International Patent Application no. WO2005052243, the explanation is given for how the supports on both the tub and the pulley are covered with a cover.
[0010] In the state of the art applications, separate elements are situated on the tub or the pulley. This will increase costs and will also result in loss of time due to workmanship.
[0011] Furthermore, since the gaps on the rear wall of the tub can give rise to generation of noise while the pulley rotates in high speed, also causing a temperature decrease of the water in the tub that is heated by a heater.
[0012] The objective of the present invention is to design a washer/dryer comprising a tub wherein the noise generated by the rotation of the pulley and the temperature loss are minimized.
[0013] The washer/dryer designed to fulfill the object of the present invention, explicated in the first claim and the respective claims thereof, comprises a cover produced as a single piece with the tub in the mould, extending out from the rear wall, provides to form an air filled insulation chamber by being bended over and covering the hollow chanter next to the support element after the tub is taken out of the mould.
[0014] By means of this cover, the rear wall of the tub is provided with heat and sound insulation feature by covering over the charrbers between the support elements such that air is trapped therein, minimizing both noise and heat transfer.
[0015] The cover is formed on at least one of the walls bounding the charrber between two adjacent support elements.
[0016] One side of the cover is joined as a single piece to one of the walls bounding the charrber in the mould and the other sides move by turning around this side.
[0017] In another embodiment of the present invention, one side of the cover is formed on the support elements adjacent to the charrber. In this embodiment, one side of the cover is attached on the support element, the side opposite to this side moves, bending over the adjacent support element such that there is a charrber in between the two support elements. When the movable side is seated on the support element, the cover is fixed on the support element by any attachment method.
[0018] The covers are dimensioned such that the charrber is entirely or partially covered.
[0019] When the cover is closed over the charrber, it can be fixed by any fixation method (press-fitting, snap-fitting, adhesion, screwing etc.) on the charrber.
[0020] By means of producing the covers that will close down on the charrbers in between the support elements as a single piece with the tub, use of numerous amounts of components is prevented and also workmanship is reduced.
[0021] By means of the present invention, both heat and sound insulation is provided on the rear wall of the tub with the covers formed in a single piece with the tub during the production of the plastic tub.
[0022] The washer/dryer designed to fulfill the objective of the present invention is illustrated in attached figures, where:
[0023] Figure 1 - is the schematic view of a washer/dryer.
[0024] Figure 2 - is the perspective view of an embodiment of the tub.
[0025] Figure 3 - is the perspective view of another embodiment of the tub.
[0026] The elements illustrated in the figures are nurrbered as follows:
1. Washer/dryer
2. Drum
3. Tub
4. Rear wall
5. Support element
6. Chanter
7. Motor
8. Cover
9. Hub
10. Pulley
11. Shaft
[0027] The washer/dryer (1) of the present invention comprises a drum (2) wherein the laundry to be washed is emplaced, a tub @ made of plastic material, in which the drum (2) moves, a motor (7) situated outside the tub @ providing to drive the drum (2), a pulley (10) transferring the movement received from the motor (7) and a shaft (11) one end of which is fixed to the pulley (10) and the other end to the drum (2), transferring the movement to the drum (2) and beared in the tub @ (Figure 1)
[0028] The tub @ comprises a rear wall (4), one or more support elements (5) situated on this rear wall (4) and one or more charrbers (6) arranged in between the support elements (5)
[0029] The washer/dryer (1) comprises one or more covers (8) produced in a single piece with the tub @ in the mould, on at least one of the sides bounding the charrber (6) situated at the rear wall (4), extending out from the surface of the rear wall (4), providing to form an air-filled insulated charrber (6) partially or entirely covering the charrber (6) by being bended over after the tub @ has been taken out of the mould. [0030] At least one side of the cover (8) is joined as a single piece to the wall bounding the chanter (6) in the mould and the other sides, turning around this side, bear on the support elements (5) bounding the charrber (6) and cover over the charrber (6) that is in between the support elements (5)
[0031] The chambers (8) in between the support elements (5) are enclosed by the covers (8) situated on the tub @ and produced as a single piece with the tub @ in the mould, forming an air-filled chamber (8), minimizing both heat transfer and noise, providing the heat and sound insulation feature to the rear wall (4) of the tub ty.
[0032] In another embodiment of the present invention, the cover (8) is situated on the wall of the support element (5) adjacent to the chamber (6) In this embodiment, one side of the cover (8) is conjoint with the support element (5) in the mould, and when this side is bended, the other side bears on the other support element (5) such that there is a chamber (6) in between the two adjacent support elements (5) The side of the cover (8) bearing on the support element (5) is fixed on the support element (5) by any fixation method. Consequently, the cover (8) extends such that it is between the adjacent support elements (5) and the top of the chamber (6) between two support elements (5) is enclosed (Figure 3)
[0033] In another embodiment of the present invention, the washer/dryer (1) comprises a hub (9) on the tub @ rear wall (4), bearing the shaft (11) to which the drum (2) and the pulley (10) are fixed to each of its ends. The support elements (5) situated on the rear wall (4) and the chambers (6) between the support elements (5) encircle the hub (9), extending from the hub (9) to the perimeter of the tub $
[0034] In this embodiment of the present invention, the cover (8) is situated on the wall of the chamber (6) adjacent to the hub (9) In this embodiment, when the cover (8) is bended towards the rear wall (4), the top of the chamber (6) is enclosed by bearing on the two support elements (5) (Figure 2)
[0035] In both embodiments of the present invention, the cover (8) produced in a single piece with the tub @; the portion thereof attached to the rear wall (4) is comparably thinner than its other portions and accordingly serves as hinge.
[0036] In another embodiment of the present invention, the tub @ comprises a locking mechanism preferably formed of protrusions and recesses situated on the opposite sides of the support element (5) and on the side of the cover (8) bearing on the support element (5) providing the cover (8) to be fixed to the support element (5)
[0037] In another embodiment of the present invention, the cover (8) is closed on the chamber (6) in a shape locking manner with the rear wall (4) [0038] In another errbodiment of the present invention, the cover (8) is closed on the chanter (6) by press-fitting.
[0039] Similarly the cover (8) is fixed over the support elements (5) by any fixing method (snap-fitting, adhesion, screwing etc.) such that there is a charrber (6) there between.
[0040] The drum (2) of the washer/dryer (1) of the present invention can either be driven by a belt-pulley (10) or by a direct drive motor (7)
[0041] Heat loss from the tub @ towards the exterior and the noise generated as a result of the air movement between the pulley (10) and the rear wall (4) are prevented by covering the top of the charrbers (6) situated on the rear wall (4) with the covers (8) produced in a single piece with the tub @ and as a result of providing air- filled charrbers (6) Furthermore, the use of superfluous parts is prevented and also labor costs is reduced by means of producing the covers (8) in a single piece with the tub @ for closing the top of the charrbers (6) in between the tub @ and the support elements

Claims

Claims
[0001] A washer/dryer (1) comprising a drum
(2) wherein the laundry to be washed is emplaced, a tub
(3) made of plastic material, in which the drum (2) moves, having a rear wall (4), one or more support elements (5) situated on this rear wall
(4) and one or more chambers (6) arranged in between the support elements (5) and characterized by one or more covers (8) produced in a single piece with the tub (3) in the mould, extending out from the surface of the rear wall (4) on at least one of the sides bounding the chamber (6) situated at the rear wall (4), providing to form an air-filled insulated chamber (6) partially or entirely covering the chamber (6) by being bended after the tub (3) has been taken out of the mould.
[0002] A washer/dryer (1) as in Claim 1, characterized by a cover (8) having at least one side joined as a single piece to the wall bounding the chamber (6) in the mould, and the other sides, turning around this side, bear on the support elements
(5) bounding the chamber (6) and cover over the chamber (6) that is in between the support elements (5).
[0003] A washer/dryer (1) as in Claim 1 or 2, characterized by a cover (8) situated on the wall of the support element (5) adjacent to the chamber
(6).
[0004] A washer/dryer (1) as in any one of the above claims, characterized by a cover
(8), with its portion attached to the rear wall (4) being comparably thinner than the other portions thus providing to serve as a hinge.
[0005] A washer/dryer (1) as in Claim 1 or 2, comprising a motor (7) situated outside the tub (3) and providing to drive the drum (2), a pulley (10) transferring the movement received from the motor
(7) and a shaft (11) beared in the tub (3) one end of which is fixed to the pulley (10) and the other end to the drum (2), transferring the movement to the drum (2), a hub (9) wherein the shaft (11) is beared and characterized by a cover (8) situated on the wall of the chamber (6) adjacent to the hub (9).
[0006] A washer/dryer (1) as in any one of the above claims, characterized by a tub (3) comprising a locking mechanism formed of protrusions and recesses situated on the opposite sides of the support element (5) and on the side of the cover (8) bearing on the support element (5), providing the cover (8) to be fixed to the support element (5).
[0007] A washer/dryer (1) as in any one of the above claims, characterized by a cover (8) closed on the chamber (6) in a shape locking manner with the rear wall (4). A washer/dryer (1) as in any one of the above claims, characterized by a cover
(8) closed on the chamber (6) by press-fitting.
EP07727542.8A 2006-03-31 2007-03-30 A noise-reduced tub for a washer/dryer Not-in-force EP2002047B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200601555 2006-03-31
PCT/EP2007/053070 WO2007113228A1 (en) 2006-03-31 2007-03-30 A noise-reduced tub for a washer/dryer

Publications (2)

Publication Number Publication Date
EP2002047A1 true EP2002047A1 (en) 2008-12-17
EP2002047B1 EP2002047B1 (en) 2013-11-06

Family

ID=38080826

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07727542.8A Not-in-force EP2002047B1 (en) 2006-03-31 2007-03-30 A noise-reduced tub for a washer/dryer

Country Status (2)

Country Link
EP (1) EP2002047B1 (en)
WO (1) WO2007113228A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101802290B (en) * 2007-09-20 2012-02-22 Bsh博世和西门子家用器具有限公司 Plastic suds tub for a washing machine or a washer/dryer
EP2090688A1 (en) * 2008-02-15 2009-08-19 Vallero International S.p.A. Drum with housing having a monolithic structure
EP2392718B1 (en) * 2010-06-01 2015-08-12 Electrolux Home Products Corporation N.V. Washing machine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3222479A1 (en) * 1982-06-15 1983-12-15 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart DRUMMING MACHINE SET FOR SPINNING
US5263343A (en) * 1991-06-12 1993-11-23 Samsung Electronics Co., Ltd. Insulating structure of a washing machine having a water container cover
GB2396395B (en) * 2002-12-21 2005-09-14 Rolinx Plastics Company Ltd Improved pulleys
DE10355452A1 (en) 2003-11-27 2005-06-23 BSH Bosch und Siemens Hausgeräte GmbH Washing machine with a container for laundry
EP1538252A1 (en) 2003-12-01 2005-06-08 Electrolux Home Products Corporation N.V. Plastic tub for a clothes washing machine

Non-Patent Citations (1)

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Title
See references of WO2007113228A1 *

Also Published As

Publication number Publication date
WO2007113228A1 (en) 2007-10-11
EP2002047B1 (en) 2013-11-06

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