EP0988410A1 - Drive device for a front-loading washing machine - Google Patents
Drive device for a front-loading washing machineInfo
- Publication number
- EP0988410A1 EP0988410A1 EP98936314A EP98936314A EP0988410A1 EP 0988410 A1 EP0988410 A1 EP 0988410A1 EP 98936314 A EP98936314 A EP 98936314A EP 98936314 A EP98936314 A EP 98936314A EP 0988410 A1 EP0988410 A1 EP 0988410A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- shaft
- motor
- hub
- drive device
- 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.)
- Granted
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
- D06F37/30—Driving arrangements
- D06F37/304—Arrangements or adaptations of electric motors
Definitions
- the invention relates to a drive device for a washing machine which can be loaded from the front and has a washing drum which is mounted on the inside of a bearing sleeve of a rigid supporting part which is attached to the rear wall of a tub, via an at least approximately horizontally lying shaft and which is also mounted on the back of the tub by a flat motor is directly driven.
- Such drive devices are known from DE 39 27 426 A1 and DE 43 41 832 A1.
- the stator of the motor designed as a brushless external rotor direct current motor is fastened directly on the bearing sleeve of the rigid support part.
- the shaft is mounted in the bearing sleeve and is connected at its outer end to the rotor of the motor in a rotationally fixed manner.
- This rotor is a so-called external rotor, which overlaps the stator windings as a pot and carries poles designed as permanent magnets.
- the motor is additionally surrounded by an insulation hood, which dampens noise emitted by the motor directly to the surrounding atmosphere.
- the known drive devices encapsulate the stator, which is exposed to a considerable temperature load due to current heat in its windings, by a pot-shaped rotor (in the case of DE 43 41 832 A1 additionally by the sound insulation hood) so strongly that cooling of the motor fails at all. This is supported above all by the fact that such a directly driving motor scarcely becomes one because of its necessarily low inherent speeds own cooling can come from the rotating rotor. Therefore, the known drive devices are practically only useful if they are protected from rapid overheating by external cooling.
- the known drive devices are also not available as a fully assembled motor to the manufacturer of washing machines. Your stands and runners must be delivered separately and assembled in the washing machine factory. Since special assembly devices for completing motor assemblies are generally not available in a washing machine plant and are also not desired, the stator assembly that is initially to be connected to the tub system should only be inaccurately completed by the external rotor assembly. Since extremely high demands are made on maintaining a small air gap between the stator and rotor poles, which is as large as possible for each specimen, and on the central bearing, which cannot be met in the aforementioned assembly in a washing machine factory, the known ones Drive devices can only be used to a very limited extent in practice.
- the invention has for its object to design the drive device mentioned above so that on the one hand cooling of the stator windings through the ambient air can be easily guaranteed and the motor can not overheat in proper operation with dimensioning according to requirements and on the other hand the motor is completed in the factory of the motor manufacturer and can be checked before it is to be installed at a washing machine manufacturer.
- the stand is connected to the rigid support part or instead of the rigid support part with the rear wall of the tub and has a central bearing sleeve for the shaft of the laundry drum and for a hub of the rotor encompassing the shaft, that at the outer end the shaft of the rotor of the rotor, which has a plurality of openings between its hub and the peripheral part and on its circumference has a bell-shaped flange facing the tub, is centered and that the rotor consists entirely of magnetizable steel and with its bell-shaped flange over an air gap faces the sheet metal packages distributed on the stator, intended for receiving excitation windings of the stator, from the outside.
- the motor Due to the configuration according to the invention with a large number of openings, the motor is given an open design, the heat-generating components of which, above all the stator windings, can be cooled from all sides by the ambient air. Even the low engine speed during washing operation is then sufficient for the rotor to generate heat-dissipating air movement.
- the design of the rotor made entirely of steel simplifies the manufacture enormously compared to the otherwise known "direct drive motors" with special dynamo sheet packages and excitation windings. In addition, the heat dissipation is not disturbed by material interruptions or changes.
- the engine can also be fully assembled and tested in the engine supplier's factory.
- the appropriate assembly and testing aids are available there, so that precisely assembled motor assemblies can always be delivered to the washing machine factory.
- this assembly can be mounted on the rear wall of the tub system instead of a cast support star otherwise usual at this point or in addition.
- the stator of the complete motor is attached to the rear wall of the tub by means of several screws. Then the shaft of the laundry drum is inserted from the front into the hub of the rotor, which is already connected to the stand via the roller bearings, and secured from behind with a central screw.
- parts of the rotor are designed to support an air movement which arises during its rotational movement, the rotor can produce sufficient cooling air for the stator windings even with a slight rotational movement, for example at washing speed.
- you can use a spoke serve like shape of the rotor disc and a fan-like design of these spokes or a fan-shaped formations of openings provided on the back of the rotor bell.
- the motor is an electronically commutated direct current motor
- the heat development can moreover be kept extremely low. Maintenance is not necessary (no carbon brushes). The service life is only limited by possible bearing wear.
- the motor can be designed as a so-called switched reluctance motor.
- the rotor consists of a ferromagnetic steel that conducts relatively poorly.
- the structure of the stator is comparable to that of the electronically commutated DC motor.
- the advantage is in particular a more cost-effective design of the rotor (no expensive magnetic materials).
- the centered connection of the rotor can be supplemented in a rotationally fixed manner on the shaft by a positive profile shaft, profile hub, feather key, cone or keyway connection.
- the invention is explained below using an exemplary embodiment shown in the drawing.
- the single figure shows a schematic representation of a washing machine tub with an internally horizontally mounted washing drum, the drive shaft of which is mounted together with the hub of the rotor bell in the bearing sleeve of the motor stand.
- the tub 1 is swingingly mounted in a housing of a washing machine, also not shown, in a manner not shown here.
- On its front wall 2 it has an opening 3 for loading and unloading the laundry drum 4, which is rotatably mounted in the rear wall 6 of the tub 1 about the horizontal axis 5.
- a motor 9 is mounted on the rear wall 6 of the tub 1, the stand supporting part 10 of which is connected to the rear wall 6 in a rotationally fixed manner via the flange 11.
- the stand supporting part 10 carries on its outer circumference a plurality, preferably three, of fastening eyes which are distributed around the circumference of the tub 1 and which are firmly connected to the tub by means of screws.
- the stand support part 10 is additionally screwed to the rear wall 6 of the tub 1 via a mounting flange in a manner not shown here.
- a plurality of stator windings 12 are distributed on the rear surface of the stator support part 10 and face the inner surface of a bell 15 of the rotor 13 with the spacing of a narrow air gap 14.
- the magnetic return flow of the bell flange 15 is automatically given by the ring shape.
- the motor can therefore introduce its drive torques directly into the washing drum 4 via the shaft journal 7.
- the stator 10 of the motor like a supporting star replaced by it, also absorbs all bearing forces.
- the bearing sleeve 26 of the stand supporting part 10 forms bearing seats for rolling bearings, the inner rings of which are fitted onto the shaft journal 7 of the washing drum 4 with a good fit.
- the shaft 7 is inserted into the hub 31 of the rotor 13 and secured by means of a central screw 30 so that it rotatably connects the rotor 13 to the washing drum 4 via the hub 31 and the inner rings of the roller bearings.
- the rotor disk 13 is provided with openings 33 between its hub 26 and the bell flange 15 for better ventilation and cooling of the stator poles.
- These openings can advantageously be shaped at their edges so that the access of cooling air through these openings is supported in the sense of a fan effect.
- so-called vortex beer can be attached to the openings or in the vicinity thereof, which swirl the cooling air so that it receives better contact with the stator windings.
- the motor is designed here as an electronically commutated DC motor. However, it can also be designed as a so-called switched reluctance motor.
- at least the flange of the rotor or its inner support consists of a ferromagnetically relatively poorly conductive material.
- the structure of the stator is comparable to that of an electronically commutated DC motor.
- the advantage of the reluctance motor is, in particular, a more cost-effective design of the rotor (no expensive magnetic materials).
- the screw connection 30 of the rotor 13 to the shaft 7 can be provided by a profile shaft, profile hub,
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention relates to a drive device in the form of a direct drive for a cantilevered washing drum, which device is designed especially with a view to providing effective cooling of the stator coils by the surrounding air so that the flat, slowly rotating engine does not overheat when operated correctly while conforming to the required dimensions. The invention also aims to make it possible for the engine to be fully pre-assembled at the production plant. To this end, the frame (10) of the engine (9) is connected to the rigid support part or, instead of to said rigid support part, to the back wall (6) of the lye container (1). Said engine comprises a central bearing bush (26) for the shaft (7) of the washing drum (4) and for a rotor (13) hub (31) enclosing the shaft. The hub (31) of the rotor (13), which has a plurality of openings (33) between its hub and peripheral part and a bell-shaped flange (15) facing the lye container (1) on its circumference, is attached to the outer end of the shaft in a centred manner. The rotor consists entirely of magnetizable steel. The bell-shaped flange of the rotor is arranged externally opposite the sheet-metal laminations (32) distributed on the frame (10) for receiving exciting coils (12) of said frame (10) and separated from said laminations by an air gap (14).
Description
Antriebsvorrichtung für eine von vorn beschickbare WaschmaschineDrive device for a washing machine that can be loaded from the front
Die Erfindung betrifft eine Antriebsvorrichtung für eine von vorn beschickbare Waschmaschine mit einer innerhalb einer Lagerhülse eines an der Rückwand eines Laugenbehälters angebrachten, steifen Tragteils über eine wenigstens annähernd horizontal liegende Welle fliegend gelagerten Wäschetrommel, die durch einen ebenfalls an der Rückseite des Laugenbehälters angebrachten, flachen Motor direkt angetrieben ist.The invention relates to a drive device for a washing machine which can be loaded from the front and has a washing drum which is mounted on the inside of a bearing sleeve of a rigid supporting part which is attached to the rear wall of a tub, via an at least approximately horizontally lying shaft and which is also mounted on the back of the tub by a flat motor is directly driven.
Solche Antriebsvorrichtungen sind aus der DE 39 27 426 A1 und der DE 43 41 832 A1 bekannt. Darin ist der Ständer des als kollektorloser Außenläufer-Gleichstrommotor ausgebildeten Motors unmittelbar auf der Lagerhülse des steifen Tragteils befestigt. Die Welle ist in der Lagerhülse gelagert und an ihrem äußeren Ende mit dem Läufer des Motors drehfest verbunden. Dieser Läufer ist hier ein sogenannter Außenläufer, der als Topf die Ständerwicklungen übergreift und als Permanentmagnete ausgebildete Pole trägt. Beim Waschautomaten gemäß der DE 43 41 832 A1 ist der Motor zusätzlich mit einer Dämmhaube umgeben, die vom Motor direkt an die umgebende Atmosphäre abgestrahle Geräusche dämpft.Such drive devices are known from DE 39 27 426 A1 and DE 43 41 832 A1. In it, the stator of the motor designed as a brushless external rotor direct current motor is fastened directly on the bearing sleeve of the rigid support part. The shaft is mounted in the bearing sleeve and is connected at its outer end to the rotor of the motor in a rotationally fixed manner. This rotor is a so-called external rotor, which overlaps the stator windings as a pot and carries poles designed as permanent magnets. In the automatic washing machine according to DE 43 41 832 A1, the motor is additionally surrounded by an insulation hood, which dampens noise emitted by the motor directly to the surrounding atmosphere.
Die bekannten Antriebsvorrichtungen kapseln den Ständer, der durch Stromwärme in seinen Wicklungen einer erheblichen Temperaturbelastung ausgesetzt ist, durch einen topfförmig gestalteten Läufer (im Falle der DE 43 41 832 A1 zusätzlich durch die Schalldämmhaube) so stark, daß eine Kühlung des Motors überhaupt ausfällt. Dies wird vor allem auch dadurch unterstützt, daß ein derartiger direkt antreibender Motor wegen seiner notwendigerweise geringen Eigendrehzahlen kaum zu einer
eigenen Kühlung durch den sich drehenden Läufer kommen kann. Daher sind die bekannten Antriebsvorrichtungen praktisch nur brauchbar, wenn sie durch eine Fremdkühlung vor schneller Überhitzung geschützt werden.The known drive devices encapsulate the stator, which is exposed to a considerable temperature load due to current heat in its windings, by a pot-shaped rotor (in the case of DE 43 41 832 A1 additionally by the sound insulation hood) so strongly that cooling of the motor fails at all. This is supported above all by the fact that such a directly driving motor scarcely becomes one because of its necessarily low inherent speeds own cooling can come from the rotating rotor. Therefore, the known drive devices are practically only useful if they are protected from rapid overheating by external cooling.
Die bekannten Antriebsvorrichtungen sind außerdem nicht als bereits fertig montierter Motor an das Herstellerwerk von Waschmaschinen lieferbar. Ihre Ständer und Läufer müssen getrennt angeliefert und im Waschmaschinenwerk erst miteinander montiert werden. Da in der Regel in einem Waschmaschinenwerk speziellen Montageeinrichtungen zur Komplettierung von Motorbaugruppen nicht vorhanden und auch nicht gewünscht sind, dürfte die Komplettierung der zunächst mit dem Laugenbehältersystem zu verbindenden Ständerbaugruppe durch die Außenläufer-Baugruppe regelmäßig nur ungenau erfolgen. Da an die Einhaltung eines kleinen und bei jedem Exemplar möglichst immer gleich großen Luftspalts zwischen den Ständer- und den Läuferpolen sowie an die zentrierte Lagerung äußerst hohe Anforderungen gestellt werden, die bei der zuvor erwähnten Montage in einer Waschmaschinenfabrik nicht zu erfüllen sind, sind die bekannten Antriebsvorrichtungen praktisch nur sehr bedingt brauchbar.The known drive devices are also not available as a fully assembled motor to the manufacturer of washing machines. Your stands and runners must be delivered separately and assembled in the washing machine factory. Since special assembly devices for completing motor assemblies are generally not available in a washing machine plant and are also not desired, the stator assembly that is initially to be connected to the tub system should only be inaccurately completed by the external rotor assembly. Since extremely high demands are made on maintaining a small air gap between the stator and rotor poles, which is as large as possible for each specimen, and on the central bearing, which cannot be met in the aforementioned assembly in a washing machine factory, the known ones Drive devices can only be used to a very limited extent in practice.
Der Erfindung liegt die Aufgabe zugrunde, die eingangs bezeichnete Antriebseinrichtung so zu gestalten, daß einerseits eine Kühlung der Ständerwicklungen durch die Umgebungsluft ohne weiteres gewährleistet werden und der Motor sich im ordnungsgemäßen Betrieb bei anforderungsgerechter Dimensionierung nicht überhitzen kann sowie andererseits der Motor im Werk des Motorenherstellers komplettiert und geprüft werden kann, ehe er bei einem Waschmaschinen-Hersteller eingebaut werden soll.The invention has for its object to design the drive device mentioned above so that on the one hand cooling of the stator windings through the ambient air can be easily guaranteed and the motor can not overheat in proper operation with dimensioning according to requirements and on the other hand the motor is completed in the factory of the motor manufacturer and can be checked before it is to be installed at a washing machine manufacturer.
Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß der Ständer an dem steifen Tragteil oder anstelle des steifen Tragteils mit der Rückwand des Laugenbehälters verbunden ist und eine zentrale Lagerhülse für die Welle der Wäschetrommel und für eine die Welle umfassende Nabe des Läufers aufweist, daß am äußerem Ende der Welle die Nabe des Läufers, der zwischen seiner Nabe und der Umfangspartie eine Vielzahl von Öffnungen und an seinem Umfang einen zum Laugenbehälter weisenden, glockenartigen Flansch aufweist, zentriert befestigt ist und daß der Läufer komplett aus magnetisierbarem Stahl besteht und mit seinem
glockenförmigen Flansch über einen Luftspalt den am Ständer verteilten, zur Aufnahme von Erregerwicklungen des Ständers vorgesehenen Blechpaketen von außen gegenübersteht.According to the invention this object is achieved in that the stand is connected to the rigid support part or instead of the rigid support part with the rear wall of the tub and has a central bearing sleeve for the shaft of the laundry drum and for a hub of the rotor encompassing the shaft, that at the outer end the shaft of the rotor of the rotor, which has a plurality of openings between its hub and the peripheral part and on its circumference has a bell-shaped flange facing the tub, is centered and that the rotor consists entirely of magnetizable steel and with its bell-shaped flange over an air gap faces the sheet metal packages distributed on the stator, intended for receiving excitation windings of the stator, from the outside.
Aufgrund der erfindungsgemäßen Ausgestaltung mit einer Vielzahl von Öffnungen erhält der Motor eine offene Bauform, deren wärmeerzeugende Bauteile, das sind vor allem die Ständerwicklungen, von allen Seiten durch die Umgebungsluft gekühlt werden können. Selbst die geringe Motordrehzahl beim Waschbetrieb reicht dann noch dazu aus, daß der Läufer eine wärmeabführende Luftbewegung erzeugt. Durch die Ausbildung des Läufers komplett aus Stahl vereinfacht sich gegenüber den sonst bekannten "Direktantriebs-Motoren" mit besonderen Dynamoblech-Paketen und Erregerwicklungen die Herstellung enorm. Außerdem ist die Wärmeabfuhr nicht durch Material-Unterbrechungen oder -Wechsel gestört.Due to the configuration according to the invention with a large number of openings, the motor is given an open design, the heat-generating components of which, above all the stator windings, can be cooled from all sides by the ambient air. Even the low engine speed during washing operation is then sufficient for the rotor to generate heat-dissipating air movement. The design of the rotor made entirely of steel simplifies the manufacture enormously compared to the otherwise known "direct drive motors" with special dynamo sheet packages and excitation windings. In addition, the heat dissipation is not disturbed by material interruptions or changes.
Auf diese Weise kann der Motor außerdem im Herstellerwerk des Motorlieferanten komplett montiert und geprüft werden. Dort stehen die dafür geeigneten Montage- und Prüfhilfsmittel zur Verfügung, so daß immer gleich genau montierte Motorbaugruppen im Waschmaschinenwerk angeliefert werden können. Hier kann diese Baugruppe anstelle eines sonst an dieser Stelle üblichen Guß-Tragsterns oder zusätzlich dazu an die Rückwand des Laugenbehältersystems montiert werden. Dazu wird der Ständer des kompletten Motors mittels mehrerer Schrauben an irgend welchen Stellen der Rückwand des Laugenbehälters befestigt. Dann wird die Welle der Wäschetrommel von vorn in die Nabe des Läufers gesteckt, der über die Wälzlager bereits mit dem Ständer verbunden ist, und mit einer zentralen Schraube von hinten gesichert. Diese Arbeitsvorgänge sind denen der Befestigung eines Tragsterns und einer Riemenscheibe gemäß den bisher üblichen Waschmaschinen- Konstruktionen äußerst gleichartig, so daß vom Montagepersonal keine völlig anderen Arbeitsvorgänge erlernt werden müssen.In this way, the engine can also be fully assembled and tested in the engine supplier's factory. The appropriate assembly and testing aids are available there, so that precisely assembled motor assemblies can always be delivered to the washing machine factory. Here, this assembly can be mounted on the rear wall of the tub system instead of a cast support star otherwise usual at this point or in addition. To do this, the stator of the complete motor is attached to the rear wall of the tub by means of several screws. Then the shaft of the laundry drum is inserted from the front into the hub of the rotor, which is already connected to the stand via the roller bearings, and secured from behind with a central screw. These operations are extremely similar to those of attaching a support star and a pulley in accordance with the washing machine constructions which have been customary to date, so that the assembly personnel do not have to learn any completely different operations.
Wenn gemäß einer besonders vorteilhaften Ausgestaltung der erfindungsgemäßen Antriebseinrichtung Teile des Läufers zur Unterstützung einer bei seiner Drehbewegung entstehenden Luftbewegung ausgebildet sind, kann der Läufer bereits bei geringer Drehbewegung, z.B. bei Waschdrehzahl, genügend Kühlluft für die Ständerwicklungen produzieren. Dazu kann man sich beispielsweise einer Speichen-
artigen Ausformung der Läuferscheibe und einer lüfterartigen Gestaltung dieser Speichen oder einer mit fächernden Ausformungen von Durchbrüchen versehenen Rückseite der Läuferglocke bedienen.If, according to a particularly advantageous embodiment of the drive device according to the invention, parts of the rotor are designed to support an air movement which arises during its rotational movement, the rotor can produce sufficient cooling air for the stator windings even with a slight rotational movement, for example at washing speed. For example, you can use a spoke serve like shape of the rotor disc and a fan-like design of these spokes or a fan-shaped formations of openings provided on the back of the rotor bell.
Wenn der Motor gemäß einer vorteilhaften Ausführungsform der Erfindung ein elektronisch kommutierter Gleichstrommotor ist, kann überdies die Wärmeentwicklung äußert gering gehalten werden. Wartungen sind nicht erforderlich (keine Kohlebürsten). Die Lebensdauer ist lediglich durch einen eventuellen Lagerverschleiß begrenzt.If, according to an advantageous embodiment of the invention, the motor is an electronically commutated direct current motor, the heat development can moreover be kept extremely low. Maintenance is not necessary (no carbon brushes). The service life is only limited by possible bearing wear.
Der Motor kann gemäß einer weiteren vorteilhaften Ausführungsform der Erfindung als sogenannter geschalteter Reluktanzmotor ausgebildet sein. In diesem Fall besteht der Läufer aus einem ferromagnetisch relativ schlecht leitenden Stahl. Der Aufbau des Ständers ist mit dem des elektronisch kommutierten Gleichstrommotors vergleichbar. Der Vorteil besteht insbesondere in einer kostengünstigeren Gestaltung des Läufers (keine teuren Magnetwerkstoffe).According to a further advantageous embodiment of the invention, the motor can be designed as a so-called switched reluctance motor. In this case, the rotor consists of a ferromagnetic steel that conducts relatively poorly. The structure of the stator is comparable to that of the electronically commutated DC motor. The advantage is in particular a more cost-effective design of the rotor (no expensive magnetic materials).
Zur erleichterten und reproduzierbar genauen Montage kann die zentrierte Verbindung des Läufers drehfest an der Welle durch eine formschlüssige Profilwellen-, Profilnaben-, Paßfeder-, Kegel- oder Keilnutverbindung ergänzt sein.For easier and reproducible precise assembly, the centered connection of the rotor can be supplemented in a rotationally fixed manner on the shaft by a positive profile shaft, profile hub, feather key, cone or keyway connection.
Anhand eines in der Zeichnung dargestellten Ausführungsbeispiels ist die Erfindung nachstehend erläutert. Die einzige Figur zeigt eine schematische Darstellung eines Waschmaschinen-Laugenbehälters mit einer innenliegend horizontal gelagerten Wäschetrommel, deren Antriebswelle gemeinsam mit der Nabe der Läuferglocke in der Lagerhülse des Motorständers gelagert ist.The invention is explained below using an exemplary embodiment shown in the drawing. The single figure shows a schematic representation of a washing machine tub with an internally horizontally mounted washing drum, the drive shaft of which is mounted together with the hub of the rotor bell in the bearing sleeve of the motor stand.
Der Laugenbehälter 1 ist auf hier nicht näher dargestellte Weise in einem ebenfalls nicht dargestellten Gehäuse einer Waschmaschine schwingend gelagert. An seiner Vorderwand 2 hat er eine Öffnung 3 zum Be- und Entladen der Wäschetrommel 4, die in der Rückwand 6 des Laugenbehälters 1 um die horizontal liegende Achse 5 drehbar gelagert ist. Dazu dient die Welle 7, die an der Rückwand 8 der Wäschetrommel 4 drehfest mit ihr verbunden ist.
An der Rückwand 6 des Laugenbehälters 1 ist ein Motor 9 montiert, dessen Ständertragteil 10 über den Flansch 11 drehfest mit der Rückwand 6 verbunden ist. Das Ständertragteil 10 trägt an seinem Außenumfang mehrere, vorzugsweise drei, um den Umfang des Laugenbehälters 1 verteilt angeordnete Befestigungsaugen, die mittels Schrauben am Laugenbehälter fest verbunden sind. Das Ständertragteil 10 ist zusätzlich über einen Montageflansch auf hier nicht näher dargestellte Weise mit der Rückwand 6 des Laugenbehälters 1 verschraubt.The tub 1 is swingingly mounted in a housing of a washing machine, also not shown, in a manner not shown here. On its front wall 2 it has an opening 3 for loading and unloading the laundry drum 4, which is rotatably mounted in the rear wall 6 of the tub 1 about the horizontal axis 5. For this purpose, the shaft 7, which is rotatably connected to the rear wall 8 of the laundry drum 4. A motor 9 is mounted on the rear wall 6 of the tub 1, the stand supporting part 10 of which is connected to the rear wall 6 in a rotationally fixed manner via the flange 11. The stand supporting part 10 carries on its outer circumference a plurality, preferably three, of fastening eyes which are distributed around the circumference of the tub 1 and which are firmly connected to the tub by means of screws. The stand support part 10 is additionally screwed to the rear wall 6 of the tub 1 via a mounting flange in a manner not shown here.
An der rückwärtigen Fläche des Ständertragteils 10 sind mehrere Ständerwicklungen 12 verteilt, die der Innenfläche einer Glocke 15 des Läufers 13 mit dem Abstand eines engen Luftspalts 14 gegenüberstehen. Der magnetische Rückfluß des Glockenflansches 15 ist automatisch durch dessen Ringform gegeben. Der Motor kann seine Antriebsmomente daher unmittelbar über den Wellenzapfen 7 in die Wäschetrommel 4 einleiten. Dabei nimmt der Ständer 10 des Motors wie ein durch ihn ersetzter Tragstern auch alle Lagerkräfte auf.A plurality of stator windings 12 are distributed on the rear surface of the stator support part 10 and face the inner surface of a bell 15 of the rotor 13 with the spacing of a narrow air gap 14. The magnetic return flow of the bell flange 15 is automatically given by the ring shape. The motor can therefore introduce its drive torques directly into the washing drum 4 via the shaft journal 7. The stator 10 of the motor, like a supporting star replaced by it, also absorbs all bearing forces.
Die Lagerhülse 26 des Ständertragteils 10 bildet Lagersitze für Wälzlager, deren Innenringe mit einer guten Passung auf den Wellenzapfen 7 der Wäschetrommel 4 aufgesteckt sind. Am äußeren Ende ist die Welle 7 in die Nabe 31 des Läufers 13 gesteckt und mittels einer zentralen Schraube 30 gesichert, so daß sie den Läufer 13 über dessen Nabe 31 und die Innenringe der Wälzlager drehfest mit der Wäschetrommel 4 verbindet.The bearing sleeve 26 of the stand supporting part 10 forms bearing seats for rolling bearings, the inner rings of which are fitted onto the shaft journal 7 of the washing drum 4 with a good fit. At the outer end, the shaft 7 is inserted into the hub 31 of the rotor 13 and secured by means of a central screw 30 so that it rotatably connects the rotor 13 to the washing drum 4 via the hub 31 and the inner rings of the roller bearings.
Die Läuferscheibe 13 ist zur besseren Lüftung und Kühlung der Ständerpole zwischen ihrer Nabe 26 und dem Glockenflansch 15 mit Durchbrüchen 33 ausgestattet. Diese Durchbrüche können vorteilhafterweise an ihren Kanten so geformt sein, daß der Zugang von Kühlluft durch diese Durchbrüche hindurch im Sinne einer Ventilatorwirkung unterstützt wird. Zur Verbesserung der Kühlwirkung können an den Durchbrüchen oder in deren Nähe noch sogenannte Wirbier angebracht sein, die für eine Verwirbelung der Kühlluft sorgen, damit sie besseren Kontakt mit den Ständerwicklungen erhält.The rotor disk 13 is provided with openings 33 between its hub 26 and the bell flange 15 for better ventilation and cooling of the stator poles. These openings can advantageously be shaped at their edges so that the access of cooling air through these openings is supported in the sense of a fan effect. In order to improve the cooling effect, so-called vortex beer can be attached to the openings or in the vicinity thereof, which swirl the cooling air so that it receives better contact with the stator windings.
Der Motor ist hier als elektronisch kommutierter Gleichstrommotor ausgebildet. Er kann aber auch als sogenannter geschalteter Reluktanzmotor ausgeführt werden. In
diesem Fall besteht zumindest der Flansch des Läufers bzw. dessen innere Auflage aus einem ferromagnetisch relativ schlecht leitenden Material. Der Aufbau des Ständers ist mit dem eines elektronisch kommutierten Gleichstrommotors vergleichbar. Der Vorteil des Reluktanzmotors besteht insbesondere in einer kostengünstigeren Gestaltung des Läufers (keine teuren Magnetwerkstoffe).The motor is designed here as an electronically commutated DC motor. However, it can also be designed as a so-called switched reluctance motor. In In this case, at least the flange of the rotor or its inner support consists of a ferromagnetically relatively poorly conductive material. The structure of the stator is comparable to that of an electronically commutated DC motor. The advantage of the reluctance motor is, in particular, a more cost-effective design of the rotor (no expensive magnetic materials).
Zur besseren Verdrehsicherung zwischen dem Läufer 13 und der Welle 7 kann die Verschraubung 30 des Läufers 13 an der Welle 7 durch eine nicht dargestellte Profilwellen-, Profilnaben-,
To better prevent rotation between the rotor 13 and the shaft 7, the screw connection 30 of the rotor 13 to the shaft 7 can be provided by a profile shaft, profile hub,
Claims
1. Antriebsvorrichtung für eine von vorn beschickbare Waschmaschine mit einer innerhalb einer Lagerhülse eines an der Rückwand eines Laugenbehälters angebrachten, steifen Tragteils über eine wenigstens annähernd horizontal liegende Welle fliegend gelagerten Wäschetrommel, die durch einen ebenfalls an der Rückseite des Laugenbehälters angebrachten, flachen Motor direkt angetrieben ist, dadurch gekennzeichnet, daß der Ständer (10) des Motors (9) an dem steifen Tragteil oder anstelle des steifen Tragteils mit der Rückwand (6) des Laugenbehälters (1 ) verbunden ist und eine zentrale Lagerhülse (26) für die Welle (7) der Wäschetrommel (4) und für eine die Welle umfassende Nabe (31 ) des Läufers (13) aufweist, daß am äußeren Ende der Welle die Nabe (31 ) des Läufers (13), der zwischen seiner Nabe und der Umfangspartie eine Vielzahl von Öffnungen (33) und an seinem Umfang einen zum Laugenbehälter (1 ) weisenden, glockenartigen Flansch (15) aufweist, zentriert befestigt ist und daß der Läufer komplett aus magnetisierbarem Stahl besteht und mit seinem glockenförmigen Flansch über einen Luftspalt (14) den am Ständer (10) verteilten, zur Aufnahme von Erregerwicklungen (12) des Ständers (10) vorgesehenen Blechpaketen (32) von außen gegenübersteht.1.Drive device for a washing machine which can be loaded from the front, with a washing drum which is mounted within a bearing sleeve of a rigid support part which is attached to the rear wall of a tub, via an at least approximately horizontally lying shaft and which is driven directly by a flat motor which is also attached to the rear of the tub characterized in that the stator (10) of the motor (9) is connected to the rigid support part or instead of the rigid support part to the rear wall (6) of the tub (1) and a central bearing sleeve (26) for the shaft (7 ) of the washing drum (4) and for a shaft (31) of the rotor (13) comprising the shaft, that at the outer end of the shaft the hub (31) of the rotor (13) between its hub and the peripheral part a variety of Openings (33) and on its periphery has a bell-shaped flange (15) pointing towards the tub (1), centered is and that the rotor consists entirely of magnetizable steel and with its bell-shaped flange via an air gap (14) the sheet metal packages (32) provided on the stator (10) for receiving excitation windings (12) of the stator (10) are opposed from the outside.
2. Antriebsvorrichtung nach Anspruch 1 , dadurch gekennzeichnet, daß Teile des Läufers (13) zur Unterstützung einer bei seiner Drehbewegung entstehenden Luftbewegung ausgebildet sind.2. Drive device according to claim 1, characterized in that parts of the rotor (13) are designed to support an air movement arising during its rotational movement.
3. Antriebsvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Motor (9) ein elektronisch kommutierter Gleichstrommotor ist.
Antriebsvorrichtung nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß der Motor (9) ein geschalteter Reluktanzmotor ist.3. Drive device according to claim 1 or 2, characterized in that the motor (9) is an electronically commutated DC motor. Drive device according to one of claims 1 or 2, characterized in that the motor (9) is a switched reluctance motor.
Antriebsvorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die zentrierte Verbindung (30) des Läufers (13) an der Welle (7) durch eine Profilwellen-, Profilnaben-, Paßfeder-, Kegel- oder Keilnutverbindung formschlüssig drehfest ist.
Drive device according to one of claims 1 to 4, characterized in that the centered connection (30) of the rotor (13) on the shaft (7) by a profile shaft, profile hub, feather key, cone or keyway connection is non-rotatably.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19724475 | 1997-06-10 | ||
| DE19724475A DE19724475B4 (en) | 1997-06-10 | 1997-06-10 | Drive device for a front-loadable washing machine |
| PCT/EP1998/003420 WO1998056973A1 (en) | 1997-06-10 | 1998-06-08 | Drive device for a front-loading washing machine |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0988410A1 true EP0988410A1 (en) | 2000-03-29 |
| EP0988410B1 EP0988410B1 (en) | 2002-03-27 |
| EP0988410B2 EP0988410B2 (en) | 2013-10-23 |
Family
ID=7832060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98936314.8A Expired - Lifetime EP0988410B2 (en) | 1997-06-10 | 1998-06-08 | Drive device for a front-loading washing machine |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5996379A (en) |
| EP (1) | EP0988410B2 (en) |
| DE (2) | DE19724475B4 (en) |
| ES (1) | ES2175740T3 (en) |
| TR (1) | TR199902909T2 (en) |
| WO (1) | WO1998056973A1 (en) |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19859567A1 (en) * | 1998-12-22 | 2000-06-29 | Bsh Bosch Siemens Hausgeraete | Drive device for a washing machine that can be loaded from the front |
| DE19922610A1 (en) * | 1999-05-17 | 2000-11-23 | Bsh Bosch Siemens Hausgeraete | Drive unit for a washing machine, comprises a nearly horizontal shaft with a washing drum, a flat electric motor with a rotor and a stator, and a hollow shaft member. |
| JP3434785B2 (en) * | 1999-06-07 | 2003-08-11 | エルジー電子株式会社 | BLDC motor for washing machine |
| AU782017B2 (en) * | 1999-10-18 | 2005-06-30 | Lg Electronics Inc. | A driving unit for a drum type washing machine |
| KR100617213B1 (en) * | 1999-10-19 | 2006-08-31 | 엘지전자 주식회사 | structure of driving unit in drum-type washing machine |
| DE19960501A1 (en) | 1999-12-15 | 2001-06-21 | Bsh Bosch Siemens Hausgeraete | Suds container for a washing machine |
| DE19963703A1 (en) * | 1999-12-29 | 2001-07-05 | Bsh Bosch Siemens Hausgeraete | Drive device for a washing machine |
| US6487769B2 (en) | 2000-11-30 | 2002-12-03 | Emerson Electric Co. | Method and apparatus for constructing a segmented stator |
| US6597078B2 (en) | 2000-12-04 | 2003-07-22 | Emerson Electric Co. | Electric power steering system including a permanent magnet motor |
| US6700284B2 (en) | 2001-03-26 | 2004-03-02 | Emerson Electric Co. | Fan assembly including a segmented stator switched reluctance fan motor |
| US6744166B2 (en) | 2001-01-04 | 2004-06-01 | Emerson Electric Co. | End cap assembly for a switched reluctance electric machine |
| US6897591B2 (en) | 2001-03-26 | 2005-05-24 | Emerson Electric Co. | Sensorless switched reluctance electric machine with segmented stator |
| US7012350B2 (en) | 2001-01-04 | 2006-03-14 | Emerson Electric Co. | Segmented stator switched reluctance machine |
| US6584813B2 (en) | 2001-03-26 | 2003-07-01 | Emerson Electric Co. | Washing machine including a segmented stator switched reluctance motor |
| CN100414029C (en) * | 2003-06-30 | 2008-08-27 | 乐金电子(天津)电器有限公司 | Driving device of full-automatic washing machine |
| KR20050115342A (en) * | 2004-06-02 | 2005-12-07 | 삼성전자주식회사 | Drum type washing machine |
| KR20050119269A (en) * | 2004-06-16 | 2005-12-21 | 삼성전자주식회사 | Drum type washing machine |
| EP1797234A1 (en) * | 2004-10-08 | 2007-06-20 | Daewoo Electronics Corporation | Outer rotor type motor and drum type washing machine including same |
| US7342334B2 (en) * | 2004-10-29 | 2008-03-11 | Emerson Electric Co. | Insulated stator with wire routing element |
| US7282823B2 (en) * | 2004-10-29 | 2007-10-16 | Emerson Electric Co. | Self-cooling electric machine |
| US8405268B2 (en) | 2010-02-18 | 2013-03-26 | Nidec Motor Corporation | Stator with monolithic mounting bosses and assembly comprising the same |
| KR102646735B1 (en) * | 2016-11-04 | 2024-03-13 | 삼성전자주식회사 | Motor for washing machine and washing machine having the same |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE944157C (en) * | 1945-01-04 | 1956-06-07 | Siemens Ag | Swing arrangement |
| NL291769A (en) * | 1962-04-19 | |||
| US3254545A (en) * | 1963-10-08 | 1966-06-07 | Fichtel & Sachs Ag | Dual-speed transmission for a washing machine |
| DE3275393D1 (en) * | 1981-12-18 | 1987-03-12 | Cerac Inst Sa | Washing machine |
| US4998052A (en) * | 1989-07-28 | 1991-03-05 | General Electric Company | Gearless direct drive switched reluctance motor for laundry application |
| DE3927426B4 (en) * | 1989-08-19 | 2006-02-23 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Drive unit for a laundry treatment machine |
| DE4341832C2 (en) * | 1993-12-08 | 2001-11-08 | Fhp Motors Gmbh | Washing machine |
| JP3229114B2 (en) * | 1994-03-31 | 2001-11-12 | 株式会社東芝 | Washing machine |
| DE19546185B4 (en) * | 1995-12-11 | 2010-07-01 | BSH Bosch und Siemens Hausgeräte GmbH | Drive device for a front-loadable washing machine |
| DE19547745A1 (en) * | 1995-12-20 | 1997-06-26 | Bosch Siemens Hausgeraete | Drive device for a washing machine that can be loaded from the front |
-
1997
- 1997-06-10 DE DE19724475A patent/DE19724475B4/en not_active Expired - Fee Related
-
1998
- 1998-06-08 TR TR1999/02909T patent/TR199902909T2/en unknown
- 1998-06-08 WO PCT/EP1998/003420 patent/WO1998056973A1/en active IP Right Grant
- 1998-06-08 DE DE59803525T patent/DE59803525D1/en not_active Expired - Lifetime
- 1998-06-08 ES ES98936314T patent/ES2175740T3/en not_active Expired - Lifetime
- 1998-06-08 EP EP98936314.8A patent/EP0988410B2/en not_active Expired - Lifetime
- 1998-06-10 US US09/095,262 patent/US5996379A/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9856973A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0988410B1 (en) | 2002-03-27 |
| DE19724475A1 (en) | 1998-12-17 |
| EP0988410B2 (en) | 2013-10-23 |
| DE59803525D1 (en) | 2002-05-02 |
| TR199902909T2 (en) | 2000-07-21 |
| DE19724475B4 (en) | 2010-08-05 |
| ES2175740T3 (en) | 2002-11-16 |
| WO1998056973A1 (en) | 1998-12-17 |
| US5996379A (en) | 1999-12-07 |
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