EP0124939B1 - Waschmaschine mit Laugenbehälter mit einem Teil aus Kunststoff - Google Patents

Waschmaschine mit Laugenbehälter mit einem Teil aus Kunststoff Download PDF

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Publication number
EP0124939B1
EP0124939B1 EP19840200626 EP84200626A EP0124939B1 EP 0124939 B1 EP0124939 B1 EP 0124939B1 EP 19840200626 EP19840200626 EP 19840200626 EP 84200626 A EP84200626 A EP 84200626A EP 0124939 B1 EP0124939 B1 EP 0124939B1
Authority
EP
European Patent Office
Prior art keywords
tub
cover
washing machine
seal
vessel
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
Application number
EP19840200626
Other languages
English (en)
French (fr)
Other versions
EP0124939A1 (de
Inventor
Bernard Fialon
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.)
Whirlpool International BV
Original Assignee
CONSTRUCTIONS ELECTRO-MECANIQUES D'AMIENS
Philips Gloeilampenfabrieken NV
Koninklijke Philips Electronics NV
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 CONSTRUCTIONS ELECTRO-MECANIQUES D'AMIENS, Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV filed Critical CONSTRUCTIONS ELECTRO-MECANIQUES D'AMIENS
Publication of EP0124939A1 publication Critical patent/EP0124939A1/de
Application granted granted Critical
Publication of EP0124939B1 publication Critical patent/EP0124939B1/de
Expired legal-status Critical Current

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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
    • D06F37/261—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
    • D06F37/261—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements
    • D06F37/263—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements assembled from at least two elements connected to each other; Connecting or sealing means therefor

Definitions

  • the invention relates to a washing machine with a drum with a horizontal axis rotatably mounted in a tank intended to receive the washing and rinsing water, said tank being liable to undergo rapid and significant variations in temperature during filling.
  • water said tank consisting of at least two separable parts, on the one hand a body, with a substantially cylindrical horizontal shell, provided with a substantially vertical bottom, and on the other hand a cover capable of closing the body to the opposite from the bottom, body and cover being tightened one against the other for the assembly of the tank and cooperating by peripheral ribs and grooves axially pressing an elastic seal, at least one of the two separable parts of the tank being made of a thick synthetic material.
  • a washing machine with a drum with a horizontal axis rotatably mounted in a tank intended to receive the washing and rinsing water, said tank being liable to undergo rapid and significant variations in temperature during filling.
  • water said tank consisting of at least two separable parts, on the one hand a
  • the two parts of the tank in contact are made of synthetic material (organic macromolecular compound).
  • a bead at the periphery of the body shell is hollowed out of a groove containing the seal, bead and seal bearing against a flat radial surface of the cover.
  • the cover is further provided with a peripheral centering rib. Body and cover are held together by a V-section ring.
  • the plastic cover is lined with a metal flange on which the assembly ring is supported.
  • the temperature cycle to which a washing machine is subjected comprises for example a slow heating of the water from 15 ° C. to possibly 95 ° C., followed by additional filling with cold water in order to rapid cooling to 60 ° C before emptying, which is followed by filling with cold water of a first rinse water.
  • the phenomenon can be analyzed by measuring the angle between the two assembled tank parts, body shell and cover, in the vicinity of the assembly area. For example, this measurement can be carried out by means of a strain gauge bridge bonded to an elastic jumper pressing the two parts against each other. It appears that the constraints of thermal origin rotate these areas around an axis tangent to the periphery of the assembled parts.
  • Displacements of 0.6 mm were measured in a few seconds at the joint.
  • the body and the cover are supported one on the other on either side of the joint, any deformation of one of these two parts creates a decompression of the joint. If the decompression is abrupt, the joint, by expanding only slowly, lets out a certain amount of water.
  • the invention aims to eliminate this incident.
  • a washing machine of the type described in the preamble it is characterized in that the body and the cover are tightened elastically against each other and in contact on a single rigid peripheral stop located on one side of said seal, and in that this body and this cover, capable of being deformed during rapid variations in their temperature, are relative to each other, movable by pivoting around said stop under the effect of said variations temperature in the direction which increases the compression of the joint. It is within the reach of the skilled person to determine what is the direction of the deformations of the synthetic material generated by the thermal gradient appearing during a thermal shock, for example with the measurement method cited above.
  • the invention in particular avoids the use of a counter cover and a metal hoop, as illustrated by the German utility model 1 885 212, which, in addition to their cost, presents the risk of forcing the synthetic material to progressive creep, which would compromise waterproofing on a permanent basis.
  • the deformation corresponds to an abrupt contraction of the material close to its internal surface whereas near the external surface the temperature acquired during the washing of the linen keeps the material expanded for a certain time: several seconds or tens of seconds.
  • This generally results in a rotation of the assembled elements and their convexity bulging facing outwards from the tank.
  • the tank-lid contact stop is located inside the tank relative to the peripheral seal, the bulging has the effect of compressing the seal at the time of the thermal shock .
  • the thermal shock can come from filling a cold tank (around 20 ° C) with hot water (60 ° C for example).
  • the rotation of the assembled parts is generally reverse creating a convexity turned towards the interior of the tank.
  • the tank-lid contact stop is located outside the tank relative to the peripheral seal, the deformation also compresses the seal at the time of thermal shock.
  • the tank-cover assembly is maintained by elastic jumpers, the ends of which bear respectively on the tank shell and the cover at points substantially aligned with the tank contact stop. -lid.
  • This arrangement keeps the elastic pressure of the jumpers substantially constant during the bulging of the assembled parts. In addition, it avoids the creep of the synthetic material in line with said jumpers, creep which would occur if the points of application of the jumpers were cantilevered.
  • the figures illustrate an example of a washing machine intended to be supplied with cold water exclusively. This is a top-loading washing machine with a rotary drum with a horizontal axis.
  • Figure 1 shows a tank made up of two parts in lightened polypropylene with a general thickness of 6 mm.
  • a first part 1, or body consisting of a substantially cylindrical ferrule 2 of substantially horizontal generatrices, provided with a bottom 3 carrying in its center a bearing housing for the drum 4.
  • a second part or cover 5 capable of closing the body and also carrying in its center a bearing housing for the drum 4.
  • the ferrule 2 receives at its top a hopper 6 for loading the laundry, corresponding to a door (not shown) of the drum 4.
  • the drum consists at least partially of perforated stainless steel sheet.
  • the tank cover 5 is provided with a centering rib 7, the external contour of which corresponds to the internal contour of the shell 2.
  • the cover On the outside of this rib 7, the cover has an annular surface 8 that is planar, radial, that is ie perpendicular to the direction of the generatrices of the cylindrical shell.
  • the tank shell has its wall ending in a radial plane with an edge 9 intended to abut on the annular surface 8 of the cover, during assembly of the tank.
  • the ferrule On the outside of this edge 9, the ferrule has, on its periphery, a rib 10 whose longitudinal extension 14 towards the cover is set back relative to the edge 9 and which forms an angle opposite the cover acute with the ferrule surface. Facing the cover, the rib 10 has a peripheral groove receiving an elastic seal 11.
  • the cover is pressed against the edge 9 forming a stop, against the elasticity of the seal 11.
  • the assembly is held by elastic jumpers or staples 12 distributed on the outskirts. These jumpers 12 are anchored on the one hand in the acute angle formed by the rib 10 with the shell surface 2, and on the other hand in a recess 13 hollowed out on the surface of the cover.
  • the recess 13 is located in such a way that the elastic force exerted by each rider 12 passes substantially through the abutment zone of the edge 9 against the surface 8, along the axis XX shown in FIG. 2.
  • the behavior of a machine according to the invention as described above is as follows.
  • the washing water is admitted cold (10 to 15 ° C) into the tank and mixed with the washing products. It is then heated by means of an electrical resistance (not shown) to the desired washing temperature, which can reach 95 ° C.
  • This heating is slow, its duration depends on the quantities of laundry and water, the initial and final temperatures of the water, but it is about 10 to 30 minutes.
  • the mass of polypropylene in the tank wall has reached an almost uniform temperature close to that of water.
  • the slowness of the heating is such that the temperature gradient in the polypropylene remains low, therefore that the deformations remain slow and weak (compression of the joint slowly decreasing by at most 0.1 mm).
  • the resilience of the material constituting the seal such as cellular synthetic rubber, is high enough for the seal to compensate for this slow and weak deformation and maintain the tightness of the tank.

Claims (4)

1. Waschmaschine mit einer Trommel mit einer horizontalen Achse, die angeordnet ist zum Drehen in einem Bottich, der dazu gemeint ist, die Lauge und das Spülwasser zu enthalten, wobei dieser Bottich schnelle und wesentliche Temperaturschwankungen beim Füllen mit Wasser bestehen kann, wobei dieser Bottich aus wenigstens zwei trennbaren Teilen besteht und zwar einerseits aus einem ringförmigen im wesentlichen horizontal zylindrischen Körper, mit einem im wesentlichen vertikalen Boden und andererseits aus einem Deckel zum Abschliessen des Körpers gegenüber dem Boden, wobei der Körper und der Deckel gegeneinander gepresst werden zur Bildung des Bottichs, wobei sie mittels umlaufender Nuten und Rillen, die eine elastische Dichtung axial eindrücken, zusammenarbeiten, wobei mindestens der eine der zwei trennbaren Teile des Bottichs aus dickwändigem Kunststoff hergestellt ist, dadurch gekennzeichnet, dass der Körper und der Deckel federnd gegeneinander gedrückt werden und zwar in Kontakt mit einem einzigen umlaufenden starren Anschlag, der auf der einen Seite der genannten Verbindung liegt und dass dieser Körper und der Deckel, die bei schnellen Temperaturschwankungen verformen können, gegenüber einander unter dem Einfluss der genannten schnellen Temperaturschwankungen in dem Sinne um den genanten Anschlag schwenkbar sind, dass dadurch die Zusammendrückung der Abdichtung verstärkt wird.
2. Waschmaschine nach Anspruch 1, bei der der Bottich mit kaltem Wasser gefüllt wird, gekennzeichnet durch die Tatsache, dass der Kontaktanschlag des Bottichdeckels in bezug auf die umlaufende Abdichtung innerhalb des Bottichs liegt.
3. Waschmaschine nach Anspruch 1, bei der der Bottich mit heissem Wassergefüllt wird, gekennzeichnet durch die Tatsache, dass der Kontaktanschlag des Bottichdeckels in bezug auf die umlaufende Abdichtung ausserhalb des Bottichs liegt.
4. Waschmaschine nach einem der vorstehenden Ansprüche 1 und 3, gekennzeichnet durch die Tatsache, dass das Gefüge aus Bottich und Deckel durch Federklammern (12) zusammengehalten wird, wobei die Enden dieser Klammern an dem ringförmigen Körper (2) bzw. an dem Deckel abgestützt werden und zwar an Stellen, die im wesentlichen zu dem Kontaktanschlag des Bottichdeckels fluchtend liegen.
EP19840200626 1983-05-06 1984-05-03 Waschmaschine mit Laugenbehälter mit einem Teil aus Kunststoff Expired EP0124939B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8307585A FR2545512B1 (fr) 1983-05-06 1983-05-06 Machine a laver a cuve comportant une partie en matiere synthetique
FR8307585 1983-05-06

Publications (2)

Publication Number Publication Date
EP0124939A1 EP0124939A1 (de) 1984-11-14
EP0124939B1 true EP0124939B1 (de) 1988-01-20

Family

ID=9288659

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840200626 Expired EP0124939B1 (de) 1983-05-06 1984-05-03 Waschmaschine mit Laugenbehälter mit einem Teil aus Kunststoff

Country Status (3)

Country Link
EP (1) EP0124939B1 (de)
DE (1) DE3468911D1 (de)
FR (1) FR2545512B1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7571625B2 (en) 2002-12-27 2009-08-11 Lg Electronics Inc. Drum type washing machine
US7827834B2 (en) 2005-09-30 2010-11-09 Lg Electronics Inc. Bearing housing assembly of drum-type washing machine and drum-type washing machine with the same
US7841220B2 (en) 2005-09-30 2010-11-30 Lg Electronics Inc. Drum-type washing machine
USRE43625E1 (en) 2006-03-29 2012-09-04 Lg Electronics Inc. Drum type washing machine
US8429938B2 (en) 2004-07-20 2013-04-30 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US8671719B2 (en) 2002-12-27 2014-03-18 Lg Electronics Inc. Drum type washing machine

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2606798B1 (fr) * 1986-11-18 1989-01-13 Ciapem Lave-linge muni d'une cuve en matiere synthetique
IT1259238B (it) * 1992-12-07 1996-03-11 Zanussi Elettrodomestici Lavabiancheria con vasca perfezionata in plastica.
GB2307484B (en) * 1995-11-25 1999-11-17 David Scott Washing machine drum cover
KR100457555B1 (ko) * 2002-02-26 2004-11-17 엘지전자 주식회사 세탁기용 터브 시일
CN107651331B (zh) * 2017-11-02 2023-01-06 优捷特环保科技有限公司 一种用于加油站及油罐区检测井的井盖
DE102021205433A1 (de) * 2021-05-28 2022-12-01 BSH Hausgeräte GmbH Laugenbehälter mit spezifischem Verbindungsbereich zwischen einem Hohlzylinder und einer Rückwand, sowie Haushaltsgerät

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1215057A (fr) * 1958-10-31 1960-04-13 Esswein & Cie Cuve pour machine à laver
DE1885212U (de) * 1961-12-09 1964-01-02 Constructa Werke G M B H Aussentrommel fuer haushalt-wasch- und schleudermaschinen.
FR1513957A (fr) * 1966-03-10 1968-02-16 Bosch Hausgeraete Gmbh Machine à laver
DE1760274A1 (de) * 1968-04-26 1971-12-23 Siemens Elektrogeraete Gmbh Laugenbehaelter mit einem loesbaren Stirnboden fuer eine Waschmaschine mit Schleudergang
IT1067355B (it) * 1976-08-02 1985-03-16 Eurodomestici Ind Riunite Vasca per macchina lavabiancheria

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8387421B2 (en) 2002-12-27 2013-03-05 Lg Electronics Inc. Drum-type washing machine
US8887537B2 (en) 2002-12-27 2014-11-18 Lg Electronics Inc. Drum-type washing machine
US8671719B2 (en) 2002-12-27 2014-03-18 Lg Electronics Inc. Drum type washing machine
US7930910B2 (en) 2002-12-27 2011-04-26 Lg Electronics Inc. Drum type washing machine
US8156770B2 (en) 2002-12-27 2012-04-17 Lg Electronics, Inc. Drum type washing machine
US8646293B2 (en) 2002-12-27 2014-02-11 Lg Electronics Inc. Drum type washing machine
US8646292B2 (en) 2002-12-27 2014-02-11 Lg Electronics Inc. Drum type washing machine
US8616027B2 (en) 2002-12-27 2013-12-31 Lg Electronics Inc. Drum type washing machine
US7571625B2 (en) 2002-12-27 2009-08-11 Lg Electronics Inc. Drum type washing machine
US8302434B2 (en) 2002-12-27 2012-11-06 Lg Electronics Inc. Drum-type washing machine
US8322170B2 (en) 2002-12-27 2012-12-04 Lg Electronics Inc. Drum-type washing machine
US8336339B2 (en) 2002-12-27 2012-12-25 Lg Electronics Inc. Drum type washing machine
US8336340B2 (en) 2002-12-27 2012-12-25 Lg Electronics Inc. Drum-type washing machine
US8341983B2 (en) 2002-12-27 2013-01-01 Lg Electronics Inc. Drum-type washing machine
US8429938B2 (en) 2004-07-20 2013-04-30 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US8800326B2 (en) 2004-07-20 2014-08-12 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US8931312B2 (en) 2004-07-20 2015-01-13 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US8434334B2 (en) 2004-07-20 2013-05-07 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US8726702B2 (en) 2004-07-20 2014-05-20 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US8887538B2 (en) 2004-07-20 2014-11-18 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US8677787B2 (en) 2004-07-20 2014-03-25 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US8783072B2 (en) 2004-07-20 2014-07-22 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US8225628B2 (en) 2005-09-30 2012-07-24 Lg Electronics Inc. Drum-type washing machine
US8220294B2 (en) 2005-09-30 2012-07-17 Lg Electronics Inc. Drum-type washing machine
US7841220B2 (en) 2005-09-30 2010-11-30 Lg Electronics Inc. Drum-type washing machine
US8671718B2 (en) 2005-09-30 2014-03-18 Lg Electronics Inc. Drum-type washing machine
US8234890B2 (en) 2005-09-30 2012-08-07 Lg Electronics Inc. Drum-type washing machine
US7827834B2 (en) 2005-09-30 2010-11-09 Lg Electronics Inc. Bearing housing assembly of drum-type washing machine and drum-type washing machine with the same
USRE44674E1 (en) 2006-03-29 2013-12-31 Lg Electronics Inc. Drum type washing machine
USRE44795E1 (en) 2006-03-29 2014-03-11 Lg Electronics Inc. Drum type washing machine
USRE44028E1 (en) 2006-03-29 2013-02-26 Lg Electronics Inc. Drum type washing machine
USRE44511E1 (en) 2006-03-29 2013-10-01 Lg Electronics Inc. Drum type washing machine
USRE43625E1 (en) 2006-03-29 2012-09-04 Lg Electronics Inc. Drum type washing machine

Also Published As

Publication number Publication date
DE3468911D1 (en) 1988-02-25
FR2545512B1 (fr) 1985-07-12
FR2545512A1 (fr) 1984-11-09
EP0124939A1 (de) 1984-11-14

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