EP1141466B1 - Drive device for a front-loading washing machine - Google Patents

Drive device for a front-loading washing machine Download PDF

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Publication number
EP1141466B1
EP1141466B1 EP99963516A EP99963516A EP1141466B1 EP 1141466 B1 EP1141466 B1 EP 1141466B1 EP 99963516 A EP99963516 A EP 99963516A EP 99963516 A EP99963516 A EP 99963516A EP 1141466 B1 EP1141466 B1 EP 1141466B1
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EP
European Patent Office
Prior art keywords
drive device
shaft
motor
rear wall
bell
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
EP99963516A
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German (de)
French (fr)
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EP1141466A1 (en
Inventor
Reinhard Heyder
Jörg SKRIPPEK
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Priority to SI9930477T priority Critical patent/SI1141466T1/en
Publication of EP1141466A1 publication Critical patent/EP1141466A1/en
Application granted granted Critical
Publication of EP1141466B1 publication Critical patent/EP1141466B1/en
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
    • D06F37/30—Driving arrangements 
    • D06F37/304—Arrangements or adaptations of electric motors

Abstract

A compact drive apparatus for a front-loading laundry treatment machine includes a support having a projection and a rear face, a shaft having an axis, a laundry drum having a rear wall, and a motor having magnetic poles and a stator with field windings and laminated cores. The laundry drum is mounted substantially horizontally on the support through the shaft. The rear wall has a bell-shaped depression with an inner circumference. The depression extends in a direction of the longitudinal axis and accommodates the projection. The motor is disposed on the rear face and directly drives the shaft. The laminated cores are disposed on the projection, and the magnetic poles are distributed on the inner circumference and are disposed externally opposite the laminated cores to accommodate the field windings with an air gap therebetween. Preferably, the projection is a bell-shaped flange of the support or of the rear wall of the support to surround the shaft as a bearing sleeve.

Description

Die Erfindung betrifft eine Antriebsvorrichtung für eine von vorn beschickbare Wäschebehandlungsmaschine mit einer über eine Welle wenigstens annähernd horizontal in einem Tragteil gelagerten Wäschetrommel, die durch einen an ihrer Rückseite angeordneten Motor direkt angetrieben ist, dessen am Läufer angeordnete magnetisierbare Pole von außen den am Ständer zur Aufnahme von Erregerwicklungen vorgesehenen Blechpaketen über einen minimalen Spalt gegenüberstehen.The invention relates to a drive device for a loadable from the front Laundry treatment machine with at least approximately on a shaft laundry drum mounted horizontally in a carrying part, which is supported by one on its Rear arranged motor is driven directly, the one on the rotor arranged magnetizable poles from the outside on the stand for receiving Excitation windings provided laminated core over a minimal gap face.

Eine derartige Antriebsvorrichtung ist aus der DE 195 47 745 A1 bekannt. Darin ist der Ständer an einem steifen Tragteil befestigt, der seinerseits mit der Rückwand eines Laugenbehälters verbunden ist. Das Tragteil weist eine zentrale Lagerhülse für die Welle der Wäschetrommel und für eine die Welle umfassende Narbe des Läufers auf. Die Nabe trägt einen zum Laugenbehälter weisenden, glockenartigen Flansch, an dessen Innenumfang magnetisierbare Pole verteilt sind. Die magnetisierbaren Pole stehen über einen minimalen Luftspalt am Ständer verteilten, zur Aufnahme von Erregerwicklungen des Ständers vorgesehen Blechpaketen von außen gegenüber.Such a drive device is known from DE 195 47 745 A1. In it the stand is attached to a rigid supporting part, which in turn is attached to the rear wall a tub is connected. The supporting part has a central bearing sleeve for the shaft of the washing drum and for a scar of the Runner on. The hub carries a bell-like pointing towards the tub Flange, on the inner circumference of which magnetizable poles are distributed. The Magnetizable poles are located on the stand via a minimal air gap distributed, intended to accommodate excitation windings of the stator Sheet metal packages from the outside.

Der Erfindung liegt die Aufgabe zugrunde, die eingangs bezeichnete Antriebseinrichtung so zu gestalten, daß sie einen einfachen, kompakten Aufbau hat.The invention is based on the object, the one mentioned To design the drive device so that it has a simple, compact structure Has.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Rückwand der Wäschetrommel eine sich in Richtung der Längsachse der Welle erstreckende glockenförmige Vertiefung aufweist, an deren der Welle zugewandten Innenumfang die magnetisierbaren Pole des Läufers verteilt sind und daß die Blechpakete des Ständers an dem in die Vertiefung hineinragenden Tragteil befestigt sind.This object is achieved in that the rear wall of the Washing drum a extending in the direction of the longitudinal axis of the shaft has bell-shaped recess, on the inner periphery facing the shaft the magnetizable poles of the rotor are distributed and that the laminated core of the Stand are attached to the supporting part protruding into the recess.

Durch die Erfindung wird eine material- und platzsparende Antriebsvorrichtung geschaffen. Dadurch, daß die Wäschetrommel eine Einbuchtung nach innen aufweist, wird der Antriebsmotor im Innern der Wäschetrommel aufgenommen, so daß zwischen der Rückseite der Wäschetrommel und der Rückwand der Wäschebehandlungsmaschine d. h. des Wäschetrockners oder der Waschmaschine, kein Platz für einen die Wäschetrommel direkt antreibenden Flachmotor oder für einen Antriebsriemen vorgesehen werden muß.The invention provides a material and space-saving drive device created. The fact that the laundry drum has an indentation inwards has, the drive motor is housed inside the laundry drum, so that between the back of the laundry drum and the back wall of the Laundry treatment machine d. H. the dryer or the Washing machine, no space for a directly driving the laundry drum Flat motor or for a drive belt must be provided.

Zur Aufnahme der magnetisierbaren Pole des Läufers braucht im Unterschied zum Stand der Technik kein zusätzliches Bauteil vorgesehen zu werden, vielmehr ist die Rückwand der Wäschetrommel so ausgestaltet, daß sie die Pole unmittelbar aufnimmt. Dadurch entfällt die aufwendige Konstruktion eines beispielsweise glockenförmigen Flansches, wie er gemäß der DE 195 47 745 A1 vorgesehen wird.In contrast to the need to hold the magnetizable poles of the rotor State of the art, no additional component is to be provided; Rear wall of the laundry drum designed so that it directly the poles receives. This eliminates the complex construction of one, for example bell-shaped flange, as is provided according to DE 195 47 745 A1.

Ein Teil des Tragteils ist gleichzeitig die Lagerhülse für die Welle der Wäschetrommel und dient als Statorträger zur Aufnahme der Statorpakete. Wärme, die beim Betrieb des Motors entsteht, wird über die metallische und daher gut wärmeleitfähige Rückwand der Wäschetrommel abgeführt und wird zur Erwärmung der Wäsche bzw. der Waschlauge genutzt.Part of the supporting part is also the bearing sleeve for the shaft of the Laundry drum and serves as a stator carrier for receiving the stator packs. Warmth, which arises during the operation of the engine is metallic and therefore good thermally conductive back wall of the laundry drum is removed and is used for heating the laundry or the wash liquor used.

Durch die schwerpunktsnahe Lagerung der Wäschetrommel wird der Einfluß von Unwuchten oder des Taumelschlages reduziert. Das Tragteil ist ein Metallgußteil, beispielsweise ein Aluminiumguß- oder ein Eisengraugußteil.Due to the focus of the laundry drum, the influence of Imbalance or wobble reduced. The support part is a metal casting, for example an aluminum casting or an iron gray casting.

Der Motor ist beispielsweise ein Reluktanzmotor, wobei die magnetisierbaren Pole des Läufers als geschichtete Eisenbleche ausgebildet sind, oder er ist ein elektronisch kommutierter Gleichstrommotor, wobei die Pole als Permanentmagnete ausgebildet sind.The motor is, for example, a reluctance motor, with the magnetizable poles of the rotor are designed as layered iron sheets, or it is a electronically commutated DC motor, the poles as Permanent magnets are formed.

Nachfolgend wird die Erfindung in einem Ausführungsbeispiel anhand der einzigen Figur näher erläutert. Diese zeigt eine Schnittansicht einer Wäschetrommel und einer Antriebsvorrichtung.In the following, the invention is illustrated in one embodiment using the only one Figure explained in more detail. This shows a sectional view of a laundry drum and a drive device.

Andere besondere Ausfuhrungen von der Erfindung sind in Ansprüchen 2-12 hinzuwiesen.Other special embodiments of the invention are pointed out in claims 2-12.

Eine Wäschetrommel 1 (Figur) ist über eine fest mit ihr verbundene im wesentlichen horizontal liegende Welle 2 in einem als Lagerhülse für die Welle 2 dienenden glockenförmigen Flansch 3 einer Rückwand 4, eines Laugenbehälters 5 drehbar gelagert. Der Flansch 3 und die Rückwand 4 bilden das Tragteil für die Wäschetrommel 1. Die Wäschetrommel 1 ist über eine Öffnung 6 frontseitig mit Wäsche befüllbar. Die Wäschetrommel 1 weist eine Rückwand 7 auf, die symmetrisch zur Längsachse der Welle 2 eine glockenförmige Vertiefung 8 hat. Die Vertiefung 8 hat eine den Boden 9 mit der Rückwand 7 verbindende Mantelwand 10, die im wesentlichen zylindrisch oder konisch ausgebildet ist. Der Boden 9 der Vertiefung 8 ist über einen mit ihm beispielsweise verschweißten Zapfen 11 mit der Welle 2 verbunden. Diese ist über Lager 12, 13, die beispielsweise Kugellager sind, in dem Flansch 3 gelagert, der die Lagerhülse für die Welle 2 bildet.A laundry drum 1 (FIG. 1) is essentially connected to a fixed one horizontally lying shaft 2 in a serving as a bearing sleeve for the shaft 2 bell-shaped flange 3 of a rear wall 4, a tub 5 rotatable stored. The flange 3 and the rear wall 4 form the supporting part for the Laundry drum 1. The laundry drum 1 is at the front via an opening 6 Laundry can be filled. The laundry drum 1 has a rear wall 7 which has a bell-shaped depression 8 symmetrical to the longitudinal axis of the shaft 2. The Indentation 8 has a jacket wall connecting the bottom 9 to the rear wall 7 10, which is substantially cylindrical or conical. The bottom 9 of the Indentation 8 is connected to a pin 11, for example welded to it Wave 2 connected. This is via bearings 12, 13, which are ball bearings, for example, mounted in the flange 3, which forms the bearing sleeve for the shaft 2.

Der Flansch 3 bildet gleichzeitig den Ständer zur Aufnahme von Blechpaketen 14 des Motors. Die Blechpakete 14 tragen Ständerwicklungen 15. Am Innenumfang der Mantelwand 10 der Vertiefung 8 sind magnetisierbare Pole 16 des Läufers verteilt. Diese stehen den Blechpaketen 14 über einen minimalen Luftspalt 17 gegenüber. Die Welle 2 endet auf der von der Wäschetrommel 1 abgewandten Seite in einem über einen Federring 18 gegenüber dem Lager 13 gesicherten Wellenstummel 19.The flange 3 also forms the stand for receiving laminated cores 14 of the motor. The laminated cores 14 carry stator windings 15. On the inner circumference the jacket wall 10 of the recess 8 are magnetizable poles 16 of the rotor distributed. These are available to the laminated cores 14 via a minimal air gap 17 across from. The shaft 2 ends on that facing away from the laundry drum 1 Side in a secured against the bearing 13 via a spring ring 18 Wave stub 19.

In der dargestellten Ausführungsform trägt die Rückwand 4 den als Tragteil für die Welle 2 und somit für die Wäschetrommel 1 dienenden Flansch 3. Um das Eindringen von Waschlauge in den Bereich des Motors, d. h. der Blechpakete 14 und der Pole 16, zu verhindern, ist zwischen der Rückwand 7 und der Rückwand 4 eine ringförmige Dichtung 20 mit beispielsweise im wesentlichen V-förmigem Querschnitt angeordnet.In the illustrated embodiment, the rear wall 4 carries the as a supporting part for the Shaft 2 and thus serving for the washing drum 1 flange 3. To Soapy water entering the area of the engine, i. H. the laminated cores 14 and the pole 16, is to be prevented between the rear wall 7 and the rear wall 4 an annular seal 20 with, for example, substantially V-shaped Cross section arranged.

Im Falle eines Wäschetrockners oder einer hermetisch nach außen abgedichteten Wäschetrommel 1 einer Waschmaschine entfällt der äußere Laugenbehälter 5. In diesem Fall ist der Flansch 3 mit einem Tragteil verbunden, das seinerseits, beispielsweise über Schwingungsdämpfer, mit dem Gehäuse verbunden ist. Das Tragteil kann sich auch in Richtung der Rückwand 4 erstrecken.In the case of a tumble dryer or one that is hermetically sealed to the outside Washing drum 1 of a washing machine does not require the outer tub 5. In in this case the flange 3 is connected to a supporting part which, in turn, for example via vibration dampers, is connected to the housing. The The supporting part can also extend in the direction of the rear wall 4.

Der Flansch 3 ist vorzugsweise ein Metallgußteil; er besteht beispielsweise aus gegossenem Aluminium oder ist ein Eisen-Graugußteil. Die Blechpakete 14 sind entweder als um den Flansch 3 herumführende Ringe ausgebildet oder als Kreissegmente. Ebenso können auch die Pole 16 als die Mantelwand 10 von innen bedeckende Ringe oder als Segmente ausgeführt sein. Anstelle einer radialen Anordnung der Blechpakete 14 und der Pole 16, wie dargestellt, können die Pole 16 auch axial zu den Blechpaketen 14 angeordnet sein. In diesem Fall sind die Pole 16 auf dem Boden 9 der Vertiefung 8 befestigt. Die Blechpakete 14 stehen ihnen, einschließlich der Erregerwicklungen gegenüber der dargestellten Ausführungsform um 90° gedreht, auf dem Flansch 3 gegenüber. In diesem Fall hat die Vertiefung 8 gegenüber der dargestellten Ausführungsform eine geringere Tiefe, jedoch einen größeren Durchmesser in radialer Richtung.The flange 3 is preferably a metal casting; it consists of, for example cast aluminum or is an iron gray cast iron part. The laminated cores 14 are either designed as rings around the flange 3 or as Circular segments. Likewise, the poles 16 as the jacket wall 10 from the inside covering rings or as segments. Instead of a radial one The arrangement of the laminated cores 14 and the poles 16, as shown, can be the poles 16 also be arranged axially to the laminated cores 14. In this case the poles are 16 attached to the bottom 9 of the recess 8. The laminated cores 14 are available to you, including the field windings compared to the illustrated embodiment rotated by 90 °, on the flange 3 opposite. In this case, the depression has 8 compared to the illustrated embodiment a smaller depth, but one larger diameter in the radial direction.

Neben ihrer Funktion zur Wärmeabführung aus dem Motor trägt die Vertiefung 8 auch zur Schallabsorbtion von Motorgeräuschen bei.In addition to its function for dissipating heat from the engine, the depression 8 also for the sound absorption of engine noises.

Das Lager 12 ist an seiner dem Boden 9 gegenüberliegenden Seite durch einen Dichtring 21 gekapselt.The bearing 12 is on its side opposite the bottom 9 by a Sealing ring 21 encapsulated.

Die Wäschetrommel 1 wird entweder durch einen kommutierten Gleichstrommotor oder einen geschalteten Reluktanzmotor angetrieben. Im Falle eines elektronisch kommutierten Gleichstrommotors sind die magnetisierbaren Pole Permanentmagnete. Im Falle eines geschalteten Reluktanzmotors werden sie von geschichteten Eisenblechen gebildet.The washing drum 1 is either by a commutated DC motor or driven a switched reluctance motor. In the case of an electronic commutated DC motors are the magnetizable poles Permanent magnets. In the case of a switched reluctance motor, they are from layered iron sheets.

Es versteht sich, daß in der Rückwand 4 im Bereich zwischen der Dichtung 20 und dem Flansch 3 zur Verbesserung der Kühlwirkung des Motors Durchbrüche angebracht sein können, die für eine Verwirbelung der Kühlluft sorgen.It is understood that in the rear wall 4 in the area between the seal 20 and the flange 3 to improve the cooling effect of the engine breakthroughs can be attached, which cause a swirling of the cooling air.

Durch die Erfindung wird eine kompakt aufgebaute Antriebsvorrichtung geschaffen, wobei eine im wesentlichen horizontal gelagerte Wäschetrommel 1 eine Rückwand 7 mit einer glockenförmigen Vertiefung 8 aufweist. Im Bereich der Vertiefung 8 ist die Wäschetrommel 1 mit der sie tragenden Welle 2 verbunden. Ein glockenförmiger Flansch 3 eines Tragteils oder einer Rückwand 4 eines Laugenbehälters 5, der die Welle 2 als Lagerbüchse umgibt, trägt Blechpakete 14 mit Ständerwicklungen 15 eines Ständers für einen Motor, dessen magnetisierbare Rotorpole 16 von dem Innenumfang der Mantelwand 10 der Vertiefung 8 aufgenommen sind.The invention provides a compact drive device, wherein a substantially horizontally mounted laundry drum 1 a Has rear wall 7 with a bell-shaped recess 8. In the field of Recess 8, the laundry drum 1 is connected to the shaft 2 carrying it. On bell-shaped flange 3 of a supporting part or a rear wall 4 of a Suds container 5, which surrounds the shaft 2 as a bearing bush, carries laminated cores 14 with stator windings 15 of a stator for a motor, the magnetizable Rotor poles 16 from the inner circumference of the casing wall 10 of the depression 8 are included.

Claims (12)

  1. Drive device for a front-loading laundry treatment machine with a laundry drum (1), which is mounted at least approximately horizontally in a support part by way of a shaft (2) and is directly driven by a motor (14, 16) arranged at its rear side and the magnetisable poles (16) of which are arranged at the rotor and disposed externally opposite the lamination stacks (14), which are provided at the stator for reception of excitation windings (15), by way of a minimum air gap (17), characterised in that the rear wall (7) of the laundry drum (1) has a bell-shaped recess (8) which extends in the direction of the longitudinal axis of the shaft (2) and at the inner circumference (10) of which the magnetisable poles (16) of the rotor are distributed, and that the lamination stacks (14) of the stator are fastened in the part (3) of the support part projecting into the recess.
  2. Drive device according to claim 1, characterised in that the support part is part of a solution container (5).
  3. Drive device according to claim 2, characterised in that the rear wall (4) of the solution container (5) has a bell-shaped flange (3) at which the lamination stacks (14) of the stator are fastened.
  4. Drive device according to claim 3, characterised in that the bell-shaped flange (3) forms the bearing sleeve of the shaft (2).
  5. Drive device according to claim 3 or 4, characterised in that the bell-shaped flange (3) is a cast metal part, particularly an aluminium casting or a grey cast iron casting.
  6. Drive device according to claim 2, characterised in that the motor (14 to 16) is sealed relative to the washing solution by a seal (20) arranged between the rear wall (7) of the laundry drum (1) and the rear wall of the solution container (5).
  7. Drive device according to one of claims 1 to 6, characterised in that the motor (14 to 16) is a switched reluctance motor.
  8. Drive device according to claim 7, characterised in that the magnetisable poles (16) are formed by laminated iron plates.
  9. Drive device according to one of claims 1 to 6, characterised in that the motor (14 to 16) is an electronically commutated direct-current motor.
  10. Drive device according to claim 9, characterised in that the magnetisable poles (16) are formed by permanent magnets.
  11. Drive device according to one of claims 1 to 10, characterised in that the lamination stacks (14) or magnetisable poles are formed to be segmental or annular.
  12. Drive device according to one of claims 1 to 11, characterised in that the lamination stacks (14) and the magnetisable poles (6) are disposed opposite one another, with respect to the shaft (2), in radial direction or in axial direction.
EP99963516A 1998-12-22 1999-12-13 Drive device for a front-loading washing machine Expired - Lifetime EP1141466B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9930477T SI1141466T1 (en) 1998-12-22 1999-12-13 Drive device for a front-loading washing machine

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19859567A DE19859567A1 (en) 1998-12-22 1998-12-22 Drive device for a washing machine that can be loaded from the front
DE19859567 1998-12-22
PCT/EP1999/009872 WO2000037731A1 (en) 1998-12-22 1999-12-13 Drive device for a front-loading washing machine

Publications (2)

Publication Number Publication Date
EP1141466A1 EP1141466A1 (en) 2001-10-10
EP1141466B1 true EP1141466B1 (en) 2003-09-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP99963516A Expired - Lifetime EP1141466B1 (en) 1998-12-22 1999-12-13 Drive device for a front-loading washing machine

Country Status (7)

Country Link
US (1) US6626014B2 (en)
EP (1) EP1141466B1 (en)
AT (1) ATE250157T1 (en)
DE (2) DE19859567A1 (en)
ES (1) ES2207322T3 (en)
TR (1) TR200101797T2 (en)
WO (1) WO2000037731A1 (en)

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CN105544139B (en) * 2014-10-30 2019-11-12 青岛海尔洗衣机有限公司 A kind of wash mill
EP3862478A1 (en) 2020-02-10 2021-08-11 The Procter & Gamble Company Dynamic balancing assemblies and laundry apparatuses having one or more clocksprings
EP3862477A1 (en) * 2020-02-10 2021-08-11 The Procter & Gamble Company Laundry apparatuses having dynamic balancing assemblies
EP3862479A1 (en) 2020-02-10 2021-08-11 The Procter & Gamble Company Suspensionless laundry apparatuses and methods of balancing a laundry apparatus
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CN105624965A (en) * 2014-10-30 2016-06-01 青岛海尔洗衣机有限公司 Washing device
CN105624965B (en) * 2014-10-30 2019-07-23 青岛海尔洗衣机有限公司 A kind of wash mill

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TR200101797T2 (en) 2002-01-21
DE19859567A1 (en) 2000-06-29
WO2000037731A1 (en) 2000-06-29
DE59907060D1 (en) 2003-10-23
US20020000108A1 (en) 2002-01-03
US6626014B2 (en) 2003-09-30
EP1141466A1 (en) 2001-10-10
ATE250157T1 (en) 2003-10-15
ES2207322T3 (en) 2004-05-16

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