EP1321557B1 - Tambour amelioré pour une machine à laver - Google Patents

Tambour amelioré pour une machine à laver Download PDF

Info

Publication number
EP1321557B1
EP1321557B1 EP20010830784 EP01830784A EP1321557B1 EP 1321557 B1 EP1321557 B1 EP 1321557B1 EP 20010830784 EP20010830784 EP 20010830784 EP 01830784 A EP01830784 A EP 01830784A EP 1321557 B1 EP1321557 B1 EP 1321557B1
Authority
EP
European Patent Office
Prior art keywords
drum
liquid
further characterized
tubular part
apertures
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.)
Expired - Lifetime
Application number
EP20010830784
Other languages
German (de)
English (en)
Other versions
EP1321557A1 (fr
Inventor
Silvano Fumagalli
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.)
Candy SpA
Original Assignee
Candy SpA
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 Candy SpA filed Critical Candy SpA
Priority to EP20010830784 priority Critical patent/EP1321557B1/fr
Publication of EP1321557A1 publication Critical patent/EP1321557A1/fr
Application granted granted Critical
Publication of EP1321557B1 publication Critical patent/EP1321557B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • D06F37/06—Ribs, lifters, or rubbing means forming part of the receptacle
    • D06F37/065—Ribs, lifters, or rubbing means forming part of the receptacle ribs or lifters having means for circulating the washing liquid
    • 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
    • D06F23/00—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 
    • D06F23/06—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 rotating or oscillating about an inclined axis

Definitions

  • the present invention relates to a clothes washing machine drum of the type described in the preamble of Claim 1.
  • This configuration does not however wet the lower portion of the drum evenly because the front region immersed in the wash liquid is under a shallower depth of water than the rear region.
  • an auxiliary jet is required to recirculate the liquid and directly wet the load in the centre of the drum in the front area, whilst also wetting those regions which would not normally be the rotation of the drum.
  • the abovementioned systems are not however capable of efficiently performing the abovementioned recirculation function, especially in the case of clothes washing machines on an inclined axis.
  • GB 2 268 939 A discloses a laundry drum in which the at least part of the cylindrical wall of the drum is at least partially formed by a plurality of cells- To this end the cylindrical wall of the drum is formed by two concentric walls connected by rings which are disposed in the space created between these walls.
  • US 3,201,958 A discloses a laundry washing machine, in which scoops are attached to the outer wall of the inner cage and each scoop comprises a box-like portion extending in both directions on the outer face of the cage.
  • Both solutions increase the radial distance between the laundry containing space and the washing tub, thereby increasing the ineffective washing liquid volume outside the laundry containing space.
  • a further drum for a washing tub of a clothes washing machine according to the preamble of claim 1 is known from DE 4310006 A1 .
  • the object of the invention is therefore to provide a drum that optimizes the recirculation by raising as much liquid as possible and releasing it in those regions where the load would otherwise not be sufficiently wetted.
  • a washing tub 10 is shown inside a washing machine housing.
  • the tub 10 houses a centrifugal drum 12 mounted rotatably on the rear portion of the tub 10, and is fitted with a closable door 15.
  • a bottom portion 55 of the tub 10 is connected to an outlet pipe 56 which leads to a plumbing circuit of known type (not shown) used for supplying and removing liquid to and from the tub 10.
  • the axis of rotation 70 of the drum 12, and hence the tube 10 that surrounds this drum 12 have a given inclination, of for example 15°, with respect to the horizontal plane on which the clothes washing machine is stood.
  • a liquid that fills the bottom 55 of the tub has a surface level 80 such that the depth of liquid inside the drum 12 at the front of the drum (nearest the door 15) is substantially less than in the rear portion (towards the left in Fig. 1 ).
  • the drum 12 according to the invention is basically cylindrical in shape and has an at least partly perforated side wall 121.
  • the side wall 121 is essentially formed by one or more surfaces of revolution about the axis of rotation 70, for example two cylindrical or frustoconical coaxial surfaces in contact with each other around the circumferences of their larger bases. This is to be understood as one possible, but not the only, embodiment of the invention since the side wall 121 could equally be curved or concave, such as to give the drum 12 the approximate shape of a barrel.
  • a tubular part 122 that extends along the circumference of the wall 121.
  • the tubular part 122 may form a closed annulus.
  • the tubular part 122 is roughly triangular in radial cross section, having one side 123a in contact with the side wall 121, and a rounded vertex 123b radially directed towards the interior of the drum 12.
  • the tubular part 122 contains a plurality of holes 124 separated more or less regularly from each other along a circular ridge 125 corresponding to the vertex 123b of the triangular section.
  • the tubular part 122 advantageously also comprises a plurality of receptacle parts 130 spaced apart more or less regularly from each other. These receptacle parts 130 are integral with the tubular part 122 and project to at least one side, but preferably to both sides, of the tubular part 122 in a direction preferably inclined with respect to the axis of rotation 70.
  • the angle of inclination ⁇ of the receptacle parts 130 with respect to the circumferential direction of the tubular part 122 is itself preferably other than 90°.
  • a receptacle part 130 is made up of two hollow shells 130a, 130b which are arranged and extend transversely in opposite directions from the tubular part 122. In shape they are somewhat like the tip of a spear ( Fig. 1 ), with a concavity on the radially outward side with respect to the axis 70.
  • These shells 130a, 130b each have an edge portion 131a, 131b inclined in such a way that, when the receptacle part 130 is at the lowest possible position of the tub 10, the edge portion 131a of the axially forward shell 130a is approximately parallel to the surface level 80 of the liquid, and, when the receptacle part 130 is at the highest possible position of the tub 10, it is the edge portion 131b of the axially rearward shell 130b that is approximately parallel to the surface level 80.
  • the shells 130a, 130b which act as liquid fill chambers, have an internal cavity in fluid communication with the interior of the tubular part 122 through communication apertures 122a formed for example in the latter's side walls, and with the exterior of the drum 12 through filling apertures 132 formed in the radially outer wall 134 of the shells 130a and 130b and in the wall 121 of the drum 12.
  • the filling apertures 132 are spoon-shaped to assist the intake of liquid during rotation of the drum 12, and may be formed on the radially outer side 123a of the tubular part 122, as an alternative or as an addition to the apertures present in the shells 130a, 130b of the receptacle part 130.
  • the inside of the shells 130a, 130b is also in fluid communication directly with the interior of the drum 12 through outlet holes 133 on the edge portions 131a, 131b.
  • the total area of the filling apertures 132 is advantageously greater than that of the holes 124 and 133.
  • Figure 3 illustrates the relationship between the volumes of liquid present in the tubular part 122 and in the receptacle parts 130 at the top of the drum 12, that is during the phase of release of the liquid.
  • the limited possibility of escape of the liquid from the tubular part compared with the volume of liquid supplied to it enables a comparatively high level of liquid to be maintained inside the tubular part and transported up to the top before being released completely.
  • the structure described above acts in such a way that, when the rotation of the drum 12 carries a receptacle part 130 below the surface level 80 of the liquid, the shells 130a, 130b are filled through the filling apertures 132. In the course of rotation, the liquid flows from these shells 130a, 130b into the tubular part 122. As one of the receptacle parts 130 nears the highest part of the tub assembly 10, the liquid tends to drain out of the holes 124 and 133 and rain down on the clothes.
  • tubular part 122 and receptacle parts 130 also results in an improved stirring of the clothes by giving them not only a circular motion but also an axial thrust towards the rear region of the drum where there is a greater depth of liquid.
  • the length and slope of the shells 130a, 130b and their number may vary to suit the depth of the drum 12 and the characteristics of speed, rotation and revolution imparted to the load.
  • the tubular part 122 also creates a separation within the drum 12, creating two sectors separate from each other in the axial direction, the lower of which collects the heavier items, while the higher sector permits washing of the lighter items, thus bringing about a differentiated washing action.
  • the side wall 121 of the drum 12 preferably contains holes in the rear axial end region 151 and central region 152, that is in the lower regions immersed in the wash liquid.
  • the forward axial end region 151 which is higher relative to the surface level 80 of the liquid, may advantageously have no holes in order to contain the liquid pushed there by centrifugal force.
  • tubular part and receptacle parts are particularly advantageous when using tilted drums, it could equally well be used in a horizontal-axis drum.

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)

Claims (15)

  1. Tambour (12) pour une cuve de lavage (10) d'une machine à laver le linge, comprenant :
    une paroi latérale (121) en partie perforée formée par une surface qui est basiquement une surface de révolution,
    une partie basiquement tubulaire (122) fixée sur ladite paroi latérale (121), ladite partie tubulaire (122) s'étendant sensiblement le long d'une circonférence de la paroi latérale (121) et ayant des ouvertures (124) pouvant collecter, pendant la rotation du tambour (12), le liquide depuis sous un niveau de surface (80) du liquide, afin de l'évacuer au-dessus du linge depuis la partie supérieure de la cuve (10),
    caractérisé en ce que :
    la partie tubulaire (122) est grossièrement triangulaire en section radiale, comportant un côté (123a) en contact avec ladite paroi latérale (121) et un sommet arrondi (123b) qui fait saillie radialement dans le tambour, et en ce que
    les ouvertures de remplissage (132) en forme de cuillère en commutation fluide avec l'extérieur du tambour (12) et avec l'intérieur de la partie tubulaire (122) sont prévues pour collecter ledit liquide depuis une partie de fond (55) de la cuve (10) à l'extérieur du tambour.
  2. Tambour (12) selon la revendication 1, caractérisé en outre en ce que la partie tubulaire (122) forme un anneau fermé qui s'étend le long d'une circonférence à sensiblement mi-chemin de la hauteur de la paroi latérale (121).
  3. Tambour (12) selon la revendication 1 ou 2, caractérisé en outre en ce que ladite partie tubulaire (122) comprend une pluralité de parties de réceptacle (130) avec des concavités tournées radialement vers l'extérieur depuis le tambour (12) et pouvant collecter, transporter et évacuer un volume supplémentaire de liquide.
  4. Tambour (12) selon la revendication 3, caractérisé en outre en ce que lesdites parties de réceptacle (130) sont allongées dans une direction sensiblement transversale par rapport à l'axe de la partie tubulaire (122).
  5. Tambour (12) selon la revendication 4, caractérisé en outre en ce que les parties de réceptacle (130) sont inclinées par rapport à l'axe de rotation (70) du tambour (12) de façon à présenter des surfaces inclinées pouvant appliquer une force axiale sur le linge.
  6. Tambour (12) selon l'une quelconque des revendications 4 et 5, caractérisé en outre en ce que les parties de réceptacle (130) incluent au moins une partie de bord (131 a, 132b) qui, quand lesdites parties de réceptacle (130) sont dans la partie de fond (55) de la cuve (10), est parallèle au niveau de surface (80) dudit liquide.
  7. Tambour (12) selon l'une quelconque des revendications 3-6, caractérisé en outre en ce que les ouvertures de remplissage (132) pouvant collecter le liquide depuis la partie de fond (55) de la cuve (10) sont formées sur lesdites parties de réceptacle (130), qui contiennent en outre des ouvertures de sortie (133) pouvant évacuer le liquide dans le tambour (12).
  8. Tambour (12) selon l'une quelconque des revendications 6 et 7, caractérisé en outre en ce que lesdites parties de réceptacle (130) incluent des ouvertures de communication (122a) communiquant avec l'intérieur de la partie tubulaire (122) et pouvant transférer ledit liquide depuis les parties de réceptacle (130) dans la partie tubulaire (122).
  9. Tambour (12) selon la revendication 7, caractérisé en outre en ce que lesdites ouvertures de remplissage (132) sont dans des positions radialement plus vers l'extérieur, et lesdites ouvertures de sortie (133) sont dans des positions radialement plus vers l'intérieur.
  10. Tambour (12) selon la revendication 7, caractérisé en outre en ce que l'aire totale desdites ouvertures de remplissage (132) est inférieure à l'aire totale desdites ouvertures de sortie (133) et des ouvertures (124) de la partie tubulaire (122).
  11. Tambour (12) selon l'une quelconque des revendications précédentes, dont l'axe de rotation (70) est incliné par rapport à la surface du liquide (80) de façon à élever la partie avant ou de charge du tambour (12).
  12. Tambour (12) selon la revendication 11, caractérisé en outre en ce que, quand la partie de réceptacle (130) est au fond, une première partie de bord (131a) de celle-ci est parallèle au niveau de surface (80) du liquide, et, quand la partie de réceptacle (130) est en haut, sa partie de bord (131 b) sur le côté opposé à ladite première partie de bord (131a) est parallèle au niveau de surface (80) du liquide.
  13. Tambour (12) selon la revendication 11, caractérisé en outre en ce que la paroi latérale (121) du tambour (12) comporte des régions sans ouvertures dans ladite partie avant.
  14. Tambour (12) selon l'une quelconque des revendications précédentes, caractérisé en outre en ce que ladite paroi latérale (121) est basiquement cylindrique.
  15. Tambour (12) selon l'une quelconque des revendications 1 à 13, caractérisé en outre en ce que ladite paroi latérale (121) consiste en deux parties sensiblement tronconiques jointes autour des circonférences de leurs bases les plus grandes.
EP20010830784 2001-12-20 2001-12-20 Tambour amelioré pour une machine à laver Expired - Lifetime EP1321557B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20010830784 EP1321557B1 (fr) 2001-12-20 2001-12-20 Tambour amelioré pour une machine à laver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20010830784 EP1321557B1 (fr) 2001-12-20 2001-12-20 Tambour amelioré pour une machine à laver

Publications (2)

Publication Number Publication Date
EP1321557A1 EP1321557A1 (fr) 2003-06-25
EP1321557B1 true EP1321557B1 (fr) 2013-08-14

Family

ID=8184824

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20010830784 Expired - Lifetime EP1321557B1 (fr) 2001-12-20 2001-12-20 Tambour amelioré pour une machine à laver

Country Status (1)

Country Link
EP (1) EP1321557B1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES267302A1 (es) * 1960-05-12 1961-08-16 Hoover Ltd Perfeccionamientos en maquinas de lavar
GB1000033A (en) * 1961-09-21 1965-08-04 Polymark Int Ltd Improvements in laundry washing machines
DE4310006A1 (de) * 1992-03-30 1993-10-28 Inst Angewandte Forschung Gmbh Waschmaschine mit einer unperforierten Waschtrommel
IT229047Y1 (it) * 1992-07-21 1998-06-24 Zanussi Elettrodomestici Lavabiancheria con cesto perfezionato

Also Published As

Publication number Publication date
EP1321557A1 (fr) 2003-06-25

Similar Documents

Publication Publication Date Title
PL192052B1 (pl) Pralka ładowana od przodu z obrotowym bębnem
KR20080102149A (ko) 세탁기 드럼의 리프팅 리브
EP1500736B1 (fr) Machine à laver
CN202081302U (zh) 洗衣机
JP2001259285A (ja) バランサーを備える洗濯機
WO2019170098A1 (fr) Machine à laver
EP1321557B1 (fr) Tambour amelioré pour une machine à laver
CN107208347A (zh) 洗衣机
CN110366619A (zh) 衣物处理装置
JP2950773B2 (ja) 全自動洗濯機
US20080271498A1 (en) Front-Loading Washing Machine With a Rotating Washing Drum
CN107407037B (zh) 洗衣机
CN212774785U (zh) 加热泵以及包含其的衣物处理设备
CN212771557U (zh) 加热泵以及包含其的衣物处理设备
JP2000014985A (ja) 補助水タンクを備えたドラム式洗濯機及びそれを用いた洗濯方法
CN106854801A (zh) 洗衣机
JP2006075479A (ja) ドラム式洗濯機
EP0427599A1 (fr) Lave-linge à tambour horizontal à bain lessiviel en turbulence
KR100360430B1 (ko) 세탁기의 배수 장치
KR100332494B1 (ko) 전자동세탁기의내조
KR101131240B1 (ko) 세탁기의 절수구조
KR200378293Y1 (ko) 드럼세탁기용 드럼
KR19990048029A (ko) 드럼세탁기의 터브구조
WO2020135246A1 (fr) Tambour de lavage et lave-linge
KR200160277Y1 (ko) 세탁기의 동력전달장치

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

17P Request for examination filed

Effective date: 20031124

AKX Designation fees paid

Designated state(s): DE GB IT

17Q First examination report despatched

Effective date: 20061109

REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Ref document number: 60148234

Country of ref document: DE

Free format text: PREVIOUS MAIN CLASS: D06F0021040000

Ipc: D06F0037060000

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RIC1 Information provided on ipc code assigned before grant

Ipc: D06F 23/02 20060101ALI20130311BHEP

Ipc: D06F 21/04 20060101ALI20130311BHEP

Ipc: D06F 37/06 20060101AFI20130311BHEP

Ipc: D06F 23/06 20060101ALI20130311BHEP

INTG Intention to grant announced

Effective date: 20130403

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 60148234

Country of ref document: DE

Effective date: 20131010

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20131219

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20131210

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20140228

Year of fee payment: 13

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20140515

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 60148234

Country of ref document: DE

Effective date: 20140515

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 60148234

Country of ref document: DE

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20141220

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150701

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20141220

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20141220