EP2843098B1 - Laundry washing machine and bellow for a laundry washing machine - Google Patents

Laundry washing machine and bellow for a laundry washing machine Download PDF

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Publication number
EP2843098B1
EP2843098B1 EP13182324.7A EP13182324A EP2843098B1 EP 2843098 B1 EP2843098 B1 EP 2843098B1 EP 13182324 A EP13182324 A EP 13182324A EP 2843098 B1 EP2843098 B1 EP 2843098B1
Authority
EP
European Patent Office
Prior art keywords
bellow
duct
washing machine
laundry washing
ducts
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
EP13182324.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2843098A1 (en
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
Application filed by Electrolux Appliances AB filed Critical Electrolux Appliances AB
Priority to EP13182324.7A priority Critical patent/EP2843098B1/en
Priority to PL13182324T priority patent/PL2843098T3/pl
Priority to PCT/EP2014/066397 priority patent/WO2015028238A1/en
Priority to CN201480047619.6A priority patent/CN105492674B/zh
Priority to AU2014314510A priority patent/AU2014314510A1/en
Publication of EP2843098A1 publication Critical patent/EP2843098A1/en
Application granted granted Critical
Publication of EP2843098B1 publication Critical patent/EP2843098B1/en
Active 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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/02—Devices for adding soap or other washing agents

Definitions

  • the present invention concerns the technical field of laundry washing machines.
  • Laundry washing machines both "simple” laundry washing machines (i.e. laundry machines which can only wash laundry) and laundry washing-drying machines (i.e. laundry washing machines which can also dry laundry) are well known and widespread.
  • laundry washing machine or “washer” will refer to both simple laundry washing machines and laundry washing-drying machines.
  • Washers capable of carrying out a washing process on laundry generally comprise a casing that houses a tub with a drum rotatably mounted therein for containing laundry to be washed.
  • the washer comprises a water circuit for supplying water and detergents to the tub.
  • the mixture of water with the required detergents is formed in a detergent tank, supported by the casing.
  • the water circuit includes a tank duct that receives the detergent mixture from the detergent tank and delivers it to the tub, 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 water circuit, thus preventing that the inevitable vibrations of the tub due to rotation of the drum possibly damage the elements that are fixedly mounted on the casing, such as the tank duct and the detergent tank.
  • EP 2 484 828 discloses a washing machine comprising a washing basket inside a washing tank, heating means, a loading system suitable for supplying mains water into the washing tank, a discharge system suitable for discharging the liquid contained in the washing tank, a control unit with a program selector configured so as to automatically carry out a washing program, a recovery tank formed in the door, separated from the washing tank and suitable for containing a portion of recovered liquid, recycling means that introduce, during one of the steps of the washing program, the portion of recovered liquid from the recovery tank into the washing tank, and recovery means that convey, after at least one step of the wash cycle, one portion of liquid used during the wash cycle from the washing tank into the recovery tank.
  • the Applicant has noted that it might be desirable to deliver the detergent mixture differently according to the different detergent and/or the different washing phases. In addition, improving the bellow duct vibration dampening would be also desirable.
  • the present invention relates to a laundry washing machine according to claim 1, as well as to a bellow for a laundry washing machine according to claim 11.
  • Preferred characteristics of the laundry washing machine and of the bellow are set forth in dependent claims.
  • the laundry washing 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.
  • Different detergent mixtures are collected and supplied in different sub-ducts, first in the tank duct, then in the bellow duct.
  • Different detergent mixtures might be mixture of water with different detergents, such as washing detergent, bleach, softener, or mixture of water with the same detergent in different proportions, such as during different phases of the washing cycle.
  • the projection portion of the bellow has a substantially flat shape, with two major sides and two minor sides.
  • the flat shape confers high flexibility to the bellow duct, which means improved capability of absorbing vibrations.
  • Another considerable advantage of the flat shape of the below duct is the reduction of the space that is needed to accommodate the duct within the casing; this advantage is very important particularly in domestic appliances, where dimensions have to be limited or standardized. It is also to be noticed that all these advantages are achieved without having complicated the assembly process of the machine, as the bellow duct does not include additional parts: it is formed together with the bellow, as a single piece.
  • the risk of obstructions of the bellow duct because of deformations induced by vibrations is avoided, thanks to the structure with at least two sub-ducts: in case of very large deformation, the sides of the bellow duct cannot contact directly one against the other, thus avoiding obstruction of the passage of water.
  • the bellow sub-ducts are separated by fins, and more preferably the fins that separate the bellow sub-ducts are extended from one to the other of the major sides.
  • the bellow sub-ducts are arranged side by side, in the sense of the width of the flat shaped projecting portion of the bellow; this arrangement allows to shape and size properly the bellow sub-ducts more easily.
  • the fins have a curved shape, when seen in a cross section of the bellow duct.
  • the curved shape proved to be effective in dampening vibrations: the magnitude of vibration transferred to the tank duct originating from the same vibration at the tub is less when the fins are curved than when the fins are straight. Without being bound to any specific interpretation, it is believed that this effect is due to the enhanced ability to deform by bending in the transversal direction, by vibration components that tend to push the major sides of the projection portion one towards the other.
  • the bellow sub-ducts are three, separated by two fins, the two fins having opposing curvature, when seen in a cross section of the bellow duct.
  • Three ducts allow managing the flow of three different detergent mixtures, which is a typical occurrence in normal laundry washing machines.
  • the opposing curvatures improve the ability of damping vibrations.
  • the opposing curvatures can be obtained with fins having either convexly or concavely opposing curvature.
  • the two alternatives differ in that the latter provides for a central sub-duct the section of which is totally convex, the two lateral sub-ducts having at least a concave side, while the former provides for two lateral sub-ducts the section of which is totally convex, the central sub-duct having two concave sides. It is believed that a totally convex section helps the flow of the detergent mixture, thus the former solution (fins having convexly opposing curvature) will be generally preferred as it provides two easy-flow sub-ducts, while the latter solution (fins having concavely opposing curvature) provides only one easy flow sub-duct.
  • the outlet mouth has at least two outlet regions, one for each of the bellow sub-ducts, each of the outlet regions being suitable to supply detergent mixture to the tub under different specific supply conditions, such different supply conditions more preferably including any one or more of different supply direction, different supply speed, different supply width, different supply location.
  • different supply conditions more preferably including any one or more of different supply direction, different supply speed, different supply width, different supply location.
  • the bellow for a laundry washing machine according to the second aspect of the invention 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 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 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 11 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.
  • Access to the tub 11 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 tub 11 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 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 a detergent tank 17 where detergent is mixed to the water and a tank duct 18, fixedly connected to the detergent tank 17 and receiving mixture of water and detergent therefrom; the detergent tank 17 is fixedly mounted to the casing 10, so is the tank duct 18.
  • the casing 10, the drum, the door, the motor, the detergent tank 17 and the tank duct 18 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 tub 11, 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 tank duct 18; the outlet mouth 34 is open towards the tub 11 of the laundry washing 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 sides 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 5 .
  • the tank duct 18 comprises at least two separate and parallel tank sub-ducts 41, 42 (see figures 6 and 7 ), suitable for receiving different detergent mixtures from different areas in the detergent tank 17.
  • the sub-ducts 41, 42 can be equal or better different one another (like the sub-ducts 41, 42 shown in the figures) in accordance with the different amount of flow they have to receive.
  • the sub-ducts 41, 42 are separated by a fin 45, longitudinally extended in the tank duct 18.
  • the bellow duct 32 comprises at least two separate and parallel bellow sub-ducts 51, 52, suitable for receiving different detergent mixtures from different sub-ducts 41, 42 of the tank duct 18.
  • the sub-ducts 51, 52 are separated by a fin 55, longitudinally extended in the bellow duct 32.
  • An additional fin 56 which extends only at the final section of the bellow duct 32, further divides the sub-duct 52 into two parallel sub-ducts 58, 59. Both fin 55 and fin 56 are extended from one to the other of the major sides 36, 37 of the projection portion 30 of the bellow 20.
  • more than one fin 45 can be provided in the tank duct 18, as well as more than two fins 55, 56 can be provided in the bellow duct 32, to have them divided into more parallel sub-ducts.
  • Fin 45 is substantially planar, while fins 55, 56 have a curved shape, when seen in a cross section of the bellow duct 32, see in particular fig. 5 .
  • the fins 55, 56 have opposing curvature, when seen in a cross section of the bellow duct 32; in the embodiment shown in the drawings, the fins 55, 56 have convexly opposing curvature, i.e. they are convex at the sides facing each other.
  • the outlet mouth 34 has preferably at least two outlet regions, indeed three outlet regions 61, 62, 63, in the embodiment shown in the drawings, one for each of the bellow sub-ducts 51, 58, 59 present at the outlet mouth 34.
  • Each of the outlet regions 61, 62, 63 is suitable to supply detergent mixture to the tub 11 under different specific supply conditions.
  • the same detergent mixture arrives, as sub-ducts 58 and 59 are divided only at the outlet mouth 34: upstream, there is only one and the same sub-duct 52 in the bellow duct 32, as well as only one sub-duct 42 in the tank duct 18.
  • the detergent mixtures is delivered to the tub 11 under different conditions at the regions 62 and 63: at region 62, the detergent mixture is delivered in a substantial radial direction into the tub 11, while at region 63 the detergent mixture is delivered in a sharply inclined direction into the tub 11.
  • the result is that the detergent mixture arriving through sub-ducts 42 and 52 is widely spread into the tub, at relatively low speed. This condition is suitable for more dense detergent mixtures that, by themselves, would spread into the laundry with difficulty.
  • the tub 11 vibrates, with respect to the casing 10. Vibrations are particularly intense during drum spinning steps of a washing process. Vibrations could in principle be particularly dangerous for the tank duct 18 that upstream is fixedly connected to the casing 10 and that may be rigid, while downstream has to deliver the detergent mixture to the vibrating tub 11.
  • the bellow duct 32 thanks to its high flexibility, prevents that the vibrations of the tub 11 reach the tank duct 18 with a dangerous magnitude. Vibration dampening is particularly effective if fins 55, 56 are provided in the bellow duct. Curved fins 55, 56 further enhance vibration dampening.
  • the invention allows improving lifetime of the machine and efficiency of the washing operations.

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)
  • Cleaning By Liquid Or Steam (AREA)
EP13182324.7A 2013-08-30 2013-08-30 Laundry washing machine and bellow for a laundry washing machine Active EP2843098B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP13182324.7A EP2843098B1 (en) 2013-08-30 2013-08-30 Laundry washing machine and bellow for a laundry washing machine
PL13182324T PL2843098T3 (pl) 2013-08-30 2013-08-30 Pralka do materiałów pranych oraz fartuch do pralki do materiałów pranych
PCT/EP2014/066397 WO2015028238A1 (en) 2013-08-30 2014-07-30 Laundry washing machine and bellow for a laundry washing machine
CN201480047619.6A CN105492674B (zh) 2013-08-30 2014-07-30 洗衣机和用于洗衣机的波纹管
AU2014314510A AU2014314510A1 (en) 2013-08-30 2014-07-30 Laundry washing machine and bellow for a laundry washing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13182324.7A EP2843098B1 (en) 2013-08-30 2013-08-30 Laundry washing machine and bellow for a laundry washing machine

Publications (2)

Publication Number Publication Date
EP2843098A1 EP2843098A1 (en) 2015-03-04
EP2843098B1 true EP2843098B1 (en) 2017-10-11

Family

ID=49083545

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13182324.7A Active EP2843098B1 (en) 2013-08-30 2013-08-30 Laundry washing machine and bellow for a laundry washing machine

Country Status (5)

Country Link
EP (1) EP2843098B1 (zh)
CN (1) CN105492674B (zh)
AU (1) AU2014314510A1 (zh)
PL (1) PL2843098T3 (zh)
WO (1) WO2015028238A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11339520B2 (en) 2019-09-27 2022-05-24 Whirlpool Corporation Laundry treating appliance with a bellows

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180136087A (ko) * 2017-06-14 2018-12-24 주식회사 대우전자 벽걸이형 세탁기 및 그의 도어 개스킷
WO2020147770A1 (zh) * 2019-01-18 2020-07-23 青岛海尔滚筒洗衣机有限公司 一种洗涤剂投放装置及洗衣机

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4447160A1 (de) * 1994-12-29 1996-07-04 Bosch Siemens Hausgeraete Waschmaschine mit einer Waschmittel-Einspüleinrichtung
DE10138067A1 (de) * 2001-08-03 2003-02-20 Bsh Bosch Siemens Hausgeraete Verfahren zum Betreiben einer programmgesteuerten Waschmaschine und Waschmaschine zur Durchführung des Verfahrens
EP1595991B1 (en) * 2004-05-13 2006-09-06 Electrolux Home Products Corporation N.V. Clothes washing machine with an integrated arrangement of water dispensers
PL1600546T3 (pl) * 2004-05-25 2009-12-31 Electrolux Home Products Corp Nv Urządzenie do prania ubrań z ulepszonymi dozownikami wody
KR20050118895A (ko) * 2004-06-15 2005-12-20 삼성전자주식회사 세제공급장치를 갖는 세탁기
EP2239363B1 (en) * 2009-04-09 2012-06-20 Electrolux Home Products Corporation N.V. Washing machine with an improved washing/rinsing-liquid inlet circuit
EP2484828B1 (en) * 2011-02-08 2017-08-16 Candy S.p.A. Device for washing laundry

Non-Patent Citations (1)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11339520B2 (en) 2019-09-27 2022-05-24 Whirlpool Corporation Laundry treating appliance with a bellows
US11814774B2 (en) 2019-09-27 2023-11-14 Whirlpool Corporation Laundry treating appliance with a bellows

Also Published As

Publication number Publication date
WO2015028238A1 (en) 2015-03-05
CN105492674A (zh) 2016-04-13
PL2843098T3 (pl) 2018-03-30
EP2843098A1 (en) 2015-03-04
CN105492674B (zh) 2017-09-01
AU2014314510A1 (en) 2016-03-10

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