EP2843099B1 - Waschmaschinen-Trockner und Balg für einen Waschmaschinen-Trockner - Google Patents

Waschmaschinen-Trockner und Balg für einen Waschmaschinen-Trockner Download PDF

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Publication number
EP2843099B1
EP2843099B1 EP13182329.6A EP13182329A EP2843099B1 EP 2843099 B1 EP2843099 B1 EP 2843099B1 EP 13182329 A EP13182329 A EP 13182329A EP 2843099 B1 EP2843099 B1 EP 2843099B1
Authority
EP
European Patent Office
Prior art keywords
bellow
drying machine
protrusion
duct
projection portion
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.)
Revoked
Application number
EP13182329.6A
Other languages
English (en)
French (fr)
Other versions
EP2843099A1 (de
Inventor
Paolo Barro
Luca Gruppo
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 Appliances AB
Original Assignee
Electrolux Appliances AB
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
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Application filed by Electrolux Appliances AB filed Critical Electrolux Appliances AB
Priority to EP13182329.6A priority Critical patent/EP2843099B1/de
Priority to AU2014401951A priority patent/AU2014401951B2/en
Publication of EP2843099A1 publication Critical patent/EP2843099A1/de
Application granted granted Critical
Publication of EP2843099B1 publication Critical patent/EP2843099B1/de
Revoked 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
    • D06F37/26—Casings; Tubs
    • D06F37/266—Gaskets mounted between tub and casing around the loading opening
    • 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
    • D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air 

Definitions

  • the present invention concerns the technical field of laundry washing-drying machines.
  • Laundry washing-drying machines i.e. laundry washing machines which can also dry laundry
  • laundry washing machines which can also dry laundry
  • the washer-dryer comprises an air circuit for carrying out drying operation by circulating hot air through a laundry container, like a drum rotatably mounted in a tub.
  • Air circulating means and heating means are provided in the air circuit for circulating and heating drying air, respectively.
  • the air circuit includes a dry air duct that receives hot and dry air from an air drying unit and delivers it to the laundry container, through a duct formed in the bellow (or bellow duct) that is normally provided at the door of the machine, sealingly engaged to both the casing and the tub.
  • the bellow duct thanks to its own elasticity- acts as a vibration-isolating section in the air circuit, thus preventing that the inevitable vibrations of the tub due to rotation of the drum possibly damage the elements that are fixedly, i.e. stationarily, mounted on the casing, such as the dry air duct and all the air drying unit.
  • the bellow duct can be so deformed by vibrations of the tub that the passage of air results to be obstructed, partially or even totally; when obstruction occurs, the efficiency of the drying operation is worsened or even -in the worst case-the air drying unit can be damaged.
  • This can happen in particular when the structure of the bellow duct is very soft: a very soft bellow duct can perform very well its fundamental vibration damping functions, but it is also more subject to the above described risk of obstruction.
  • the Applicant has thus thought to address this problem not by carefully designing the bellow duct, so as to limit its deformability to an extent that obstruction is not risked, rather by providing the bellow duct with something preventing that a deformation results in an obstruction.
  • the present invention relates to a laundry washing-drying machine according to claim 1, as well as to a bellow for a laundry washing-drying machine according to claim 6.
  • Preferred characteristics of the laundry washing-drying machine and of the bellow are set forth in dependent claims.
  • the laundry washing-drying machine according to the first aspect of the invention comprises:
  • radially extending as referred to the projection portion of the bellow it is meant that it extends from the main portion in a direction away from the axis of the bellow, or away from the axis of the tub (that may be the same). This does not imply that the extension of the projection portion is exactly and fully radial, be intended that it can slightly depart from an exactly radial direction.
  • the bellow duct can be advantageously made flat, even very flat: a flat shape confers high flexibility to the bellow duct, which means improved capability of absorbing vibrations.
  • the protrusion is fin shaped, oriented longitudinally along the bellow duct.
  • fin shaped it is meant that the front section of the protrusion in the sense of the flow of air within the duct is minimal, while its length can be much longer. With this configuration the protrusion affects only minimally the flow of air, while still having a significant dimension in one direction, this being important to avoid the contact of the facing sides of the bellow duct along the full length of the duct.
  • the protrusion is formed at a central location of the major side. Central position maximises the separation effect between the facing sides.
  • the protrusion is extended from one to the other of the major sides. This can result in a better capability of withstanding deformations, as the protrusion is already in contact with both facing sides; its action is immediately available upon deformation of the bellow duct, without having to wait that the two facing sides get closer enough to have the protrusion contact the opposite side.
  • the protrusion is in form of a wall extending from and solid to both the major sides.
  • the further advantage is achieved of having a structure of the projection portion of the bellow that is more efficient in dampening vibrations, thanks to the wall between the major sides.
  • the bellow for a laundry washing-drying machine is made of an elastically deformable material and comprises:
  • downstream a position with reference to the direction of flow of a fluid inside a conduit or duct is indicated.
  • vertical and “horizontal” are referred to the positions of elements with respect to the laundry washing-drying machine 1 in its normal installation and functioning position. Indeed, a horizontal plane (X,Y) formed by two horizontal X,Y perpendicular directions is defined, and a vertical direction Z, perpendicular to the horizontal plane, is defined as well in a 3-D space.
  • Laundry washing-drying machine 1 comprises an outer box casing 10, preferably but not necessarily parallelepiped-shaped, and a tub 11 suspended in the casing 10.
  • the tub 10 has the shape of a hollow cylinder having horizontal axis.
  • a drum (not visible in the drawings) is rotatably mounted for housing the laundry and in general the clothes and garments to be washed and/or dried.
  • Access to the drum is provided via a front door (not shown in the drawings), preferably hinged to casing 10; the door can open and close an opening 12 formed in the drum and a corresponding opening (not shown) in the casing 10, according to design options per se well known in the art.
  • Casing 10 generally includes a front panel (not shown), a rear panel 13 and two side panels 14, 15, all mounted on a basement 16. Panels 13-15 and basement 16 can be of metal sheet.
  • Laundry washing-drying machine 1 also comprises typical components of a machine of this kind, such as an electric motor assembly (not shown) for rotating, on command, the drum about its axis in the tub 11, as well as an air drying unit 17 where dry warm air is produced and a dry air duct 18, fixedly connected to the air drying unit 17 and receiving warm dry air therefrom; the air drying unit 17 is fixedly mounted to the casing 10, so is the dry air duct 18.
  • Water and detergent dispensing devices are also provided within the casing 10.
  • the casing 10, the drum, the door, the motor, the air drying unit 17, the dry air duct 18, water and detergent dispensing devices are common parts in the technical field and are considered to be known; therefore they will not be described in further details.
  • a bellow 20 made of elastically deformable material is provided at the door.
  • the bellow 20 includes a ring shaped main portion 21, sealingly connected to both the casing 10 and the tub11, at the opening 12, by means of respective external and internal rims 22 and 23.
  • the main portion 21 of the bellow 20 also offers an elastically deformable contact seat for the door itself.
  • the bellow 20 includes also a projection portion 30 that is made of the same material and in one and the same piece with the main portion 21.
  • the projection portion 30 extends from the main portion 21, at an upper position of the opening 12, to a distal end 31, somewhat radially remote from the main portion 21.
  • a bellow duct 32 is formed within the projection portion 30 of the bellow 20.
  • the bellow duct 32 extends from an inlet mouth 33, formed at the distal end 31 of the projection portion 30 to an outlet mouth 34, formed in the main portion 21 of the bellow 20, at the projection portion 30.
  • the inlet mouth 33 is connected to a downstream end 19 of the dry air duct 18; the outlet mouth 34 is open towards the tub 11 of the laundry washing-drying machine 1.
  • the projection portion 30 of the bellow 20 has a substantially flat shape, with two major sides 36, 37 and two minor sides 38, 39; the major 36, 37 are substantially planar, while the minor sides 38, 39 are rounded, so the overall shape of the cross section of the projection portion 30 and of the bellow duct 32 formed therein is a flat rounded shape, as better visible in figure 7 .
  • the bellow duct 32 comprises at least a protrusion 40, internally formed in the bellow duct 32 on one of the major sides, e.g. the major side 36.
  • the protrusion 40 is preferably fin shaped (in the sense define above), oriented longitudinally along the bellow duct 32.
  • the protrusion 40 is formed at a central location of the major side 36, both in a transverse direction (between the minor sides 38, 39) and in a longitudinal direction (between the inlet mouth 33 and the outlet mouth 34).
  • more than one protrusion 40 can be provided in the bellow duct 32, e.g. two or more protrusions 40 distributed between the two major sides 36 and 37.
  • the protrusion 40 is extended from the major side 36 to the opposing major side 37, or is just minimally spaced therefrom (as can be seen in figure 7 ).
  • Protrusion 40' is in the form of a wall extending from and solid to both the major sides 36 and 37 of the projection portion 30.
  • the tub 11 vibrates, with respect to the casing 10. Vibrations could in principle be particularly dangerous for the dry air duct 18, which upstream is fixedly connected to the casing 10, while downstream has to deliver the dry air to the vibrating tub 11.
  • the bellow duct 32 according to the invention thanks to its high flexibility also due to its flat shape, prevents that the vibrations of the tub 11 reach the dry air duct 18 with a dangerous magnitude. At the same time, this high flexibility does not introduce any risk of obstruction of the bellow duct 32, thanks to the presence of the protrusion 40 (or 40').
  • the invention allows improving lifetime of the machine and efficiency of the drying operations.

Landscapes

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

Claims (10)

  1. Balg (20) für einen Wäschetrockner (1), der aus einem elastisch verformbaren Material hergestellt ist, umfassend:
    - einen ringförmigen Hauptabschnitt (21) mit einem ersten, externen Rand (22), der dazu bestimmt ist, abdichtend an ein Gehäuse (10) des Wäschetrockners (1) angebracht zu werden, und einen zweiten, internen Rand (23), der dazu bestimmt ist, an einen Behälter (11) des Wäschetrockners (1) angebracht zu werden;
    - einen Überstandsabschnitt (30), der in einem Stück mit dem Hauptabschnitt (21) hergestellt ist und sich radial von dem Hauptabschnitt (21) zu einem distalen Ende (31) erstreckt;
    - einen Balgkanal (32), der innerhalb des Überstandsabschnitts (30) des Balgs (20) ausgebildet ist, der sich von einem Einlaufmund (33), der an dem distalen Ende (31) des Überstandsabschnitts (30) gebildet ist und dazu bestimmt ist, mit einem nachgelagerten Ende (19) eines Trockenluftkanals (18) verbunden zu sein, der mit einer Lufttrocknungseinheit (17) des Wäschetrockners (1) verbunden ist, zu einem Auslaufmund (34) erstreckt, der in dem Hauptabschnitt (21) des Balgs (20) gebildet ist, an dem Überstandsabschnitt (30), und hin zu dem Behälter (11) des Wäschetrockners (1) offen ist;
    dadurch gekennzeichnet, dass
    der Überstandsabschnitt (30) des Balgs (20) eine im Wesentlichen flache Form mit zwei Hauptseiten (36, 37) und zwei Nebenseiten (38, 39) aufweist und der Balgkanal (32) mindestens einen Vorsprung (40; 40') umfasst, der in einer der Hauptseiten (36, 37) intern ausgebildet ist.
  2. Balg nach Anspruch 1, wobei der Vorsprung (40; 40') rippenförmig, in Längsrichtung entlang des Balgkanals (32) ausgerichtet ist.
  3. Balg nach Anspruch 1 oder 2, wobei der Vorsprung (40; 40') an einer mittleren Stelle der Hauptseite (36, 37) ausgebildet ist.
  4. Balg nach Anspruch 1 bis 3, wobei sich der Vorsprung (40; 40') von einer zu der anderen der Hauptseiten (36, 37) erstreckt.
  5. Balg nach Anspruch 4, wobei der Vorsprung (40') in Form einer Wand vorliegt, die sich von beiden Hauptseiten (36, 37) erstreckt und fest mit ihnen verbunden ist.
  6. Waschmaschinen-Trockner (1), umfassend:
    - ein Gehäuse (10);
    - einen Behälter (11), der in dem Gehäuse (10) aufgehängt ist;
    - einen Trockenluftkanal (18), der in dem Gehäuse (10) gelagert und mit einer Lufttrocknungseinheit (17) fest verbunden ist und der ein nachgelagertes Ende (19) aufweist;
    gekennzeichnet durch das Umfassen eines Balgs nach einem der Ansprüche 1 bis 5.
  7. Wäschetrockner (1) nach Anspruch 6, wobei der Vorsprung (40; 40') rippenförmig, in Längsrichtung entlang des Balgkanals (32) ausgerichtet ist.
  8. Wäschetrockner (1) nach Anspruch 6 oder 7, wobei der Vorsprung (40; 40') an einer mittleren Stelle der Hauptseite (36, 37) ausgebildet ist.
  9. Wäschetrockner (1) nach Anspruch 6 bis 8, wobei sich der Vorsprung (40; 40') von einer zu der anderen der Hauptseiten (36, 37) erstreckt.
  10. Wäschetrockner (1) nach Anspruch 9, wobei der Vorsprung (40') in Form einer Wand vorliegt, die sich von beiden Hauptseiten (36, 37) erstreckt und fest mit ihnen verbunden ist.
EP13182329.6A 2013-08-30 2013-08-30 Waschmaschinen-Trockner und Balg für einen Waschmaschinen-Trockner Revoked EP2843099B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP13182329.6A EP2843099B1 (de) 2013-08-30 2013-08-30 Waschmaschinen-Trockner und Balg für einen Waschmaschinen-Trockner
AU2014401951A AU2014401951B2 (en) 2013-08-30 2014-07-30 Laundry washing-drying machine and bellow for a laundry washing-drying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13182329.6A EP2843099B1 (de) 2013-08-30 2013-08-30 Waschmaschinen-Trockner und Balg für einen Waschmaschinen-Trockner

Publications (2)

Publication Number Publication Date
EP2843099A1 EP2843099A1 (de) 2015-03-04
EP2843099B1 true EP2843099B1 (de) 2017-10-11

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ID=49083549

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EP13182329.6A Revoked EP2843099B1 (de) 2013-08-30 2013-08-30 Waschmaschinen-Trockner und Balg für einen Waschmaschinen-Trockner

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3162948B1 (de) * 2015-10-30 2018-04-18 Whirlpool EMEA S.p.A Haushaltsgerät zur ausführung mindestens eines trocknungszyklus, wie einer waschtrockner oder einem trockner
EP3467187B1 (de) 2017-10-09 2021-12-22 Whirlpool Corporation Zur verwendung in einer maschine zum trocknen von wäsche konfigurierter filter und mit solch einem filter ausgestattete maschine zum trocknen von wäsche

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110285260A1 (en) 2008-12-30 2011-11-24 Suk Yun Moon Laundry machine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040026888A (ko) * 2002-09-26 2004-04-01 엘지전자 주식회사 가스켓 잔수제거호스가 구비된 드럼세탁기
DE102009001323A1 (de) * 2009-03-04 2010-09-09 BSH Bosch und Siemens Hausgeräte GmbH Vorrichtung und Verfahren zum Schleudern von Wäsche

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110285260A1 (en) 2008-12-30 2011-11-24 Suk Yun Moon Laundry machine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"service manual of AQD1170D69EU model", INDESIT, 2014, pages 1 - 24, XP055502431

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