WO2008153497A1 - Lave-linge à chargement frontal - Google Patents

Lave-linge à chargement frontal Download PDF

Info

Publication number
WO2008153497A1
WO2008153497A1 PCT/SE2008/050705 SE2008050705W WO2008153497A1 WO 2008153497 A1 WO2008153497 A1 WO 2008153497A1 SE 2008050705 W SE2008050705 W SE 2008050705W WO 2008153497 A1 WO2008153497 A1 WO 2008153497A1
Authority
WO
WIPO (PCT)
Prior art keywords
washing
drum
tub
washing drum
washing tub
Prior art date
Application number
PCT/SE2008/050705
Other languages
English (en)
Inventor
Anders Sahlen
Original Assignee
Asko Cylinda 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 Asko Cylinda Ab filed Critical Asko Cylinda Ab
Publication of WO2008153497A1 publication Critical patent/WO2008153497A1/fr

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
    • 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
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • D06F37/22—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a horizontal axis

Definitions

  • the present invention relates to a front-loading washing machine according to the preamble to patent claim 1.
  • Front-loading washing machines i.e. having a horizontally mounted rotation shaft for the rotary washing drum, which at the front have a closable loading opening, have hitherto been provided with bearings only at their rear end.
  • the known bearing arrangements encroach unfavorably upon the capacity of the machine, since they have a negative effect upon the axial length of the washing drum.
  • the object of the present invention is to provide an increased utilization of the space in a washing machine by reducing the adverse effect of the spatial requirements of the rear bearing point.
  • Another object is to reduce the adverse effect of vibrations and imbalances in the rotary washing drum.
  • fig. 1 shows schematically a front view of one example of a front-loading washing machine according to the invention
  • fig. 2 is a vertical sectional view through the rotation shaft of the washing drum
  • fig. 3 is an enlarged, broken, vertical part section which is made through the rotation shaft of the washing drum.
  • the front-loading washing machine which is shown schematically by way of example in fig. 1 and 2 is made up of a machine housing 1 , which is intended to rest against a stable ground surface, for example a floor.
  • the housing 1 has at the front an opening, which can be circular or rectangular and can be closable by means of a hatch; alternatively there is no hatch in the housing itself.
  • a washing tub 2 is supported, which, for example, is substantially cylindrical and in turn supports a washing drum 3, which is rotatably mounted in the washing tub.
  • a base part 4 which advantageously has a stabilizing mass of a suitably balanced size and can be made, for example, of concrete.
  • the base part 4 and also therefore the washing tub 2 in the housing 1 are movably suspended by virtue of being supported by a number of, for example four, shock absorbers 5, 6, which, through shock absorption, counteract movements due to imbalances resulting from uneven load during rotation of the washing drum.
  • the washing tub 2 has a rear end face 7, which, in the example, is substantially circular with a central hole 8 forming a lead-through for a horizontally mounted, i.e. substantially horizontal, rotation shaft 9 for the washing drum.
  • a rear bearing point 10 for the washing drum 3 is disposed in the rear end face 7 of the washing tub 2 in the form of a bearing housing 11 with bearings, for example ball bearings, which bearing housing is threaded onto the rotation shaft 9.
  • This latter also forms a drive shaft for driving of the washing drum by means of a drive device, such as an electric drive motor (not shown).
  • this is coupled to the drive shaft 9 via a transmission, for example a belt transmission 13, which is partially shown in the form of a belt pulley 14, which sits, fitted in a rotationally secure manner, on the drive shaft.
  • a transmission for example a belt transmission 13, which is partially shown in the form of a belt pulley 14, which sits, fitted in a rotationally secure manner, on the drive shaft.
  • the drive motor can sit directly on the drive shaft.
  • the washing tub 2 is a, during operation, closed unit and has a front end face 15 with a relatively large opening 16, which during operation is shut and can be exposed by opening of a hatch 17 for the loading of laundry, with loading in the direction of the arrow 18.
  • the hatch is fitted directly to the washing tub 2 and accompanies its movements due to the movable suspension, but can alternatively be fitted to the front wall of the housing 1 , in which case an elastic bellows usually extends between the housing and the washing tub.
  • the suspension of the hatch regardless of whether this is fitted directly to the washing tub 2 or to the front wall of the housing, is usually a butt hinge on one side and a control handle with lock on the opposite side, but can be realized differently.
  • a cylinder-casing-shaped surface 19 in the form of an impermeable plate made, for example, of stainless steel.
  • the surface 19 can have a different shape, for example conical or curved.
  • a water inlet and a system for metering out detergent usually from a detergent compartment by the front wall of the machine housing 1.
  • a liquid outlet for carrying away washing liquid or water.
  • the washing drum 3 likewise has a rear end face 20, which is substantially circular and centrally supports the rotation shaft 9, which therefore sits, fitted in a rotationally secure manner, on the end face and, from the interior of the tub, protrudes through the end face of the tub, as has been stated above.
  • the washing drum 3 expediently has the same principal shape as the washing tub 2, i.e. in this example is substantially cylindrical and has a cylinder casing surface 21 , which is breached, for example with perforations, for the permeation of washing liquid and water in the washing tub 3.
  • the end face too, can be breached.
  • the washing drum 3 has a front, largely open end face 22 having a circular opening 23, which is concentric with and virtually coincides with the opening 16 in the washing tub 2 and, together therewith, forms the opening for loading of the laundry.
  • the washing drum is dimensioned and shaped such that it forms a laundry space 26 which is as large as possible in relation to the external dimensions of the washing machine, inter alia its depth and the inner space 27 of the washing tub 2, the latter by virtue of the fact that the drum is as uniform a tub as possible and that the interspaces between the casing walls 24, 25 and the rear end faces, and the front end face and the hatch, are kept as small as possible.
  • the washing machine according to the invention has, in addition to its rear bearing point 10 on the drive shaft 9, a front bearing point 28, by means of which the washing drum 3 is supported in the washing tub 2 close to the loading opening 23 and forms a front-mounted, annular bearing 29 of relatively large diameter, which extends around the periphery of the loading opening 23.
  • the washing drum 3 is, close to the opening, configured with a cylindrical flange 31 having an external diameter which is somewhat less than the diameter of the opening 16 in the washing tub and, moreover, projects somewhat into this opening.
  • the bearing 29 is a so-called grooved bearing, for example a ball bearing, which can best be seen from fig.
  • the bearing also has an outer race 34, which with its external cylinder casing surface 35 is attached to an internal cylinder- casing-shaped supporting surface 36 in the circumferential edge of the tub opening 23, for example by means of a press-fit. More precisely, in the example, a cylindrical offset 37 or a recess in the circumferential edge of the tub opening is configured on the inner side of the end face 15 and facing inward toward the interior of the tub.
  • the balls 38 lie in a ring shape in a raceway 39, which is formed by two mutually facing grooves 40, 41 in the two races.
  • the fact that the offset 37 is configured to fit the bearing 29 and advantageously fully receive its dimensions means that the bearing will be fully accommodated in the tub without, in particular, further spatial requirements.
  • the fact that the rear bearing point 10 is relieved of load therefore allows this to be dimensioned without needing to withstand the large bending moments as was previously required, something which also applies to the drive shaft 9 and the end face
  • the front-mounted bearing also gives a better balancing with lesser vibrations.
  • the washing machine can be a so-called combination machine, with washing function and tumbler function in the same machine.
  • the control unit is here adapted also for tumbling and the machine is additionally provided with various sensors for the detection of, inter alia, moisture content.
  • the bearing 29 is therefore concentric with the rotation shaft of the washing drum, see the geometric symmetrical axis 42, which in the example is horizontal, but can alternatively be inclined, possibly switchable between the two.
  • the bearing is sealed against penetrating liquid by virtue of being a bearing with integrated sealing function or by being supplemented by a sealing element between front bearing and washing space.
  • the front-fitted annular bearing can alternatively be realized with cylindrical or conical rollers or can possibly be a pure and simple plain bearing.

Landscapes

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

Abstract

La présente invention concerne un lave-linge qui a une cuve de lavage (2) fixée par rotation et qui se trouve dans un logement (1). Cette cuve de lavage comprend un tambour de lavage (3) qui tourne à l'intérieur de la cuve, cuve et tambour de lavage ayant l'un et l'autre une face frontale arrière (7, 20), une face frontale avant (15, 22) et une paroi de logement circulaire (19, 21). Le tambour de lavage comporte un élément palier arrière (10) qui supporte la rotation du tambour de lavage autour d'un arbre de rotation (9) au moyen d'un dispositif d'entraînement. Une ouverture de chargement (23) pour le linge se trouve sur la face frontale avant (15, 22) de la cuve et du tambour de lavage. Un élément palier avant sous forme d'élément de palier circulaire (29) renferme, dans la zone d'ouverture de chargement (23) la périphérie de l'ouverture, et son diamètre est égal ou supérieur au diamètre de l'ouverture et des supports, avec, de manière rotative, l'élément de palier arrière (10) et le tambour de lavage (3) dans la cuve de lavage (2).
PCT/SE2008/050705 2007-06-15 2008-06-12 Lave-linge à chargement frontal WO2008153497A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0701493-9 2007-06-15
SE0701493 2007-06-15

Publications (1)

Publication Number Publication Date
WO2008153497A1 true WO2008153497A1 (fr) 2008-12-18

Family

ID=40129965

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2008/050705 WO2008153497A1 (fr) 2007-06-15 2008-06-12 Lave-linge à chargement frontal

Country Status (1)

Country Link
WO (1) WO2008153497A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013079561A1 (fr) 2011-12-02 2013-06-06 BSH Bosch und Siemens Hausgeräte GmbH Appareil électroménager et porte de chargement d'un tel appareil

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3529448A (en) * 1967-10-13 1970-09-22 Broadbent & Sons Ltd Thomas Washer extractors for laundry work
FR2591242A1 (fr) * 1985-12-06 1987-06-12 Dubix Sa Ets Machine a laver et a essorer automatique

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3529448A (en) * 1967-10-13 1970-09-22 Broadbent & Sons Ltd Thomas Washer extractors for laundry work
FR2591242A1 (fr) * 1985-12-06 1987-06-12 Dubix Sa Ets Machine a laver et a essorer automatique

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013079561A1 (fr) 2011-12-02 2013-06-06 BSH Bosch und Siemens Hausgeräte GmbH Appareil électroménager et porte de chargement d'un tel appareil
CN103958764A (zh) * 2011-12-02 2014-07-30 Bsh博世和西门子家用电器有限公司 家用电器和用于所述电器的装载门

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