EP3656909A1 - Washing machine - Google Patents

Washing machine Download PDF

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Publication number
EP3656909A1
EP3656909A1 EP18207696.8A EP18207696A EP3656909A1 EP 3656909 A1 EP3656909 A1 EP 3656909A1 EP 18207696 A EP18207696 A EP 18207696A EP 3656909 A1 EP3656909 A1 EP 3656909A1
Authority
EP
European Patent Office
Prior art keywords
tub
washing machine
hub
drive shaft
machine according
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
Application number
EP18207696.8A
Other languages
German (de)
French (fr)
Other versions
EP3656909C0 (en
EP3656909B1 (en
Inventor
Vladimir Hudak
Pavol Petracek
Li Hongkun
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.)
Haier Germany GmbH
Original Assignee
Haier Deutschland GmbH
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 Haier Deutschland GmbH filed Critical Haier Deutschland GmbH
Priority to PL18207696.8T priority Critical patent/PL3656909T3/en
Priority to ES18207696T priority patent/ES2958714T3/en
Priority to EP18207696.8A priority patent/EP3656909B1/en
Publication of EP3656909A1 publication Critical patent/EP3656909A1/en
Application granted granted Critical
Publication of EP3656909C0 publication Critical patent/EP3656909C0/en
Publication of EP3656909B1 publication Critical patent/EP3656909B1/en
Active legal-status Critical Current
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
    • D06F37/26—Casings; Tubs
    • D06F37/264—Tubs provided with reinforcing structures, e.g. ribs, inserts, braces
    • 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
    • D06F37/206—Mounting of motor
    • 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
    • D06F37/267—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups
    • D06F37/269—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups for the bearing of the rotary receptacle

Definitions

  • the invention relates to a washing machine according to the preamble of claim 1.
  • the washing machine includes a tub and a drum rotatably mounted in the tub, which is connected to a drive motor via a shaft for transmitting a driving force.
  • the drive motor has a stator and a rotor connected to the shaft, which is arranged in the direction of an axis of rotation between the stator and the tub.
  • the stator is connected to the tub by means of a support part, so that the rotor is not accessible for safety reasons.
  • the tub which is made of a polymer material, is connected to a metallic hub by injection molding.
  • the shaft is rotatably mounted on both sides of the rotor on the hub and on the stator.
  • the invention has for its object to provide a washing machine which has a simple, robust and compact structure.
  • a washing machine with the features of claim 1.
  • the tub base body is stiffened with at least one tub stiffening element.
  • the at least one tub stiffening element is arranged on a rear wall of the tub. The at least one tub stiffening element leads on the one hand to the fact that the forces transmitted to the tub are better dissipated to the housing of the washing machine.
  • the at least one tub stiffening element leads to the tub, in particular the rear wall, being deformed comparatively less due to the forces. Due to the lower deformation of the tub, in particular the rear wall, the bearings in which the drive shaft is mounted are better supported, as a result of which undesired movements of the drive shaft radially to the axis of rotation during operation of the washing machine are avoided.
  • the at least one tub stiffening element thus leads to a more robust and rigid construction of the washing machine. The stiffer construction makes it easier and more compact to mount the drive shaft.
  • the vat base body is preferably formed from a plastic material, in particular from a polymer material.
  • the at least one tub stiffening element is preferably formed from a metallic material.
  • the stator is preferably connected to the tub, in particular to the rear wall.
  • the tub preferably has a plurality of tub stiffening elements.
  • the tub stiffening elements are connected to one another and / or are formed separately from one another.
  • the tub stiffening elements are designed, for example, as tub stiffening struts.
  • the tub stiffening elements are preferably arranged rotationally symmetrical to the axis of rotation.
  • the tub base body and the at least one tub stiffening element are preferably integrally formed.
  • the drive motor is designed as an electrical drive motor, in particular as an electrical direct drive motor.
  • the rotor in particular comprises permanent magnets.
  • a washing machine ensures a simple, robust and compact structure.
  • the comparatively stiffer second material of the at least one tub stiffening element stiffens the first material of the tub body.
  • the first material is in particular a plastic material
  • the second material is in particular a metallic material. Because the tub base body is made of plastic material, the tub base body can be produced simply and inexpensively.
  • the tub base or the plastic material is stiffened by the metallic material.
  • a washing machine ensures a simple, robust and compact structure.
  • the at least one tub stiffening element is in particular extrusion-coated with the plastic material, so that the tub base body and the at least one tub stiffening element are integrally formed.
  • the tub is in particular manufactured in such a way that the at least one tub stiffening element is used as an insert during injection molding of the tub body. This makes the manufacture and construction of the tub simple.
  • a washing machine ensures a robust and compact structure.
  • the outer diameter D 1 of the at least one tub stiffening element radially to the axis of rotation enables a large area stiffening of a rear wall of the tub.
  • the inner diameter d 1 of the at least one applies Vat stiffening element: d 1 ⁇ 0.5 D 2 , in particular d 1 ⁇ 0.3 D 2 , and in particular d 1 ⁇ 0.1 D 2 .
  • a washing machine ensures a robust and compact structure.
  • the at least one tub stiffening element is connected directly to the stator, for example to a stator housing.
  • the connection is made, for example, by screwing.
  • the tub, in particular a rear wall of the tub, is supported on the stator by the connection, so that the stator and the at least one tub stiffening element form an extremely rigid construction.
  • the electric drive motor can be easily attached.
  • the tub comprises at least one hub, which is arranged on at least one rear wall of the tub.
  • the hub is in particular made of a material that is stiffer in comparison to a material of the tub base body.
  • the hub is preferably made of a metallic material.
  • the hub is in particular made of the same material as the at least one tub stiffening element.
  • the hub is connected to the at least one tub stiffening element and / or is formed separately from the at least one tub stiffening element.
  • At least one bearing preferably at least two bearings, is arranged between the drive shaft and the hub. The hub forms a respective bearing seat for the at least one bearing.
  • the hub is preferably attached to the tub base body and / or to the at least one tub stiffening element.
  • the tub preferably has two hubs, which are arranged along the axis of rotation on two sides of the drum are.
  • the hubs are each arranged on a rear wall of the tub.
  • the respective hub is preferably attached to the tub base body and / or to the at least one tub stiffening element.
  • the first rear wall and the second rear wall are preferably stiffened by means of at least one tub stiffening element.
  • the respective hub forms a respective bearing seat for at least one bearing.
  • a washing machine ensures a simple, robust and compact structure.
  • the hub is preferably formed in one piece with the at least one tub stiffening element.
  • the hub and the at least one tub stiffening element are preferably formed from a metallic material.
  • the respective hub is in particular fastened to a respective rear wall of the tub.
  • a washing machine according to claim 8 ensures a simple, robust and compact structure.
  • the hub is preferably extrusion-coated with the plastic material.
  • the hub is used as an insert, so that the tub base body and the hub are integrally formed.
  • a washing machine ensures a simple and compact structure. Due to the comparatively less deformation of the tub or a rear wall of the tub, the undesired freedom of movement of the drive shaft radially to the axis of rotation during operation of the washing machine, in particular when spinning, is reduced. This also reduces the load on the bearings in which the drive shaft is mounted. Accordingly, it is sufficient to support the drive shaft with at least two bearings, which - viewed in the direction of the axis of rotation - are arranged between the drum and the rotor. This will achieved a comparatively more compact structure in the direction of the axis of rotation.
  • the washing machine preferably has no bearing, which is arranged opposite the tub in relation to the rotor and, for example, supports the free end of the drive shaft on the stator.
  • the at least two bearings are preferably supported on a hub which is connected to the tub base body and / or the at least one tub stiffening element.
  • a washing machine ensures a simple, robust and compact structure.
  • the drive shaft is mounted on two sides of the drum by means of a bearing on the tub.
  • a first bearing viewed along the axis of rotation — is preferably arranged between the drum and the rotor, and a second bearing is arranged on an opposite side of the drum.
  • the at least two bearings are preferably supported on hubs which are arranged on two sides of the drum.
  • the hubs are preferably connected to the tub base body and / or to at least one associated tub stiffening element.
  • a washing machine ensures a simple and compact structure. Because the drive shaft is not supported on the stator by means of an additional bearing and the drive shaft is accordingly not connected to the stator, a simple and compact construction is achieved.
  • the stator in particular comprises a stator housing which is designed as a cover for covering the drive shaft. The drive shaft is thus completely covered by the stator, so that the washing machine does not allow access to the drive shaft without additional components and thus fulfills the safety regulations.
  • the stator housing has, in particular, a blind hole recess which enables the free end of the drive shaft to be received.
  • a washing machine 1 has a housing 2 in which a tub 3 is arranged.
  • the tub 3 is mounted in the housing 2 by means of vibration dampers 4 and a resilient suspension 5 to dampen vibrations.
  • a drum 6 for receiving of laundry rotatably mounted.
  • the drum 6 can be driven in rotation about an axis of rotation 8 by means of an electric direct drive motor 7.
  • the washing machine 1 is designed as a so-called front loading washing machine.
  • the tub 3 On a front 9, the tub 3 has a laundry opening 10 for filling the drum 6 with laundry.
  • the laundry opening 10 can be closed in the usual way by means of a closure flap 11.
  • the closure flap 11 is pivotally attached to the housing 2.
  • the tub 3 forms a circumferential wall 12 extending around the axis of rotation 8 and a rear wall 13 extending transversely to the axis of rotation 8.
  • the tub 3 comprises a tub base body 14, a plurality of tub stiffening elements 15 and a hub 16.
  • the tub base body 14 is made of a plastic material.
  • the tub base body 14 forms the peripheral wall 12 and partially the rear wall 13.
  • the tub stiffening elements 15 and the hub 16 are made of a metallic material and are formed in one piece.
  • the tub stiffening elements 15 and the hub 16 are used during the injection molding of the tub base body 14 as an insert component, so that the tub stiffening elements 15 and the hub 16 are surrounded or encapsulated by the tub base body 14.
  • the hub 16 is rotationally symmetrical.
  • the hub 16 forms a through opening 18 for the passage of a drive shaft 17.
  • the hub 16 is arranged concentrically in the rear wall 13.
  • the drive shaft 17 is connected in a rotationally fixed manner to the drum 6 and is guided through the through opening 18 and is supported on the hub 16 by means of a first bearing 19 and a second bearing 20.
  • the hub 16 forms bearing seats.
  • the direct drive motor 7 comprises a rotor 21 and an associated stator 22.
  • the rotor 21 comprises permanent magnets 23, which are fastened to a rotor hub 24 at a radial distance from the axis of rotation 8.
  • the rotor 21 is designed as an inner rotor, the permanent magnets 23 being arranged on an inner side of the electromagnet 25 of the stator 22 facing the axis of rotation 8.
  • the rotor 21 is fixed in a rotationally fixed manner to the drive shaft 17 by means of the rotor hub 24.
  • the rotor 21 is arranged such that the bearings 19, 20 - viewed in the direction of the axis of rotation 8 - are arranged between the drum 6 and the rotor 21.
  • the rotor 21 is also - viewed in the direction of the axis of rotation 8 - arranged between the tub 3 or the rear wall 13 and the stator 22.
  • the stator 22 is arranged rotatably relative to the tub 3.
  • the stator 22 comprises the electromagnets 25 and a stator housing 26.
  • the electromagnets 25 are fastened to the stator housing 26.
  • the electromagnets 25 are arranged in such a way that they cooperate with the permanent magnets 23 of the rotor 21 in the usual way.
  • the stator housing 26 is attached to the tub 3.
  • the stator housing 26 is not connected to the drive shaft 17, so that the stator 22 is exclusively connected to the tub 3.
  • the stator housing 26 is designed as a cover and prevents access to the rotor 21 and the drive shaft 17.
  • the tub stiffening elements 15 extend radially from the hub 16 to the axis of rotation 8.
  • the tub stiffening elements 15 are designed, for example, as stiffening struts.
  • the tub 3 preferably has a number N of tub stiffening elements 15, where: 2 N N 12 12, in particular 3 N N 10 10, and in particular 4 ⁇ N ⁇ 8.
  • the tub stiffening elements 15 are arranged rotationally symmetrical to the axis of rotation 8.
  • the tub stiffening elements 15 define an outer diameter D 1 and an inner diameter d 1 radially to the axis of rotation 8.
  • D 1 0,3 0.3 D 2 in particular D 1 0,5 0.5 D 2 , in particular D 1 0,7 0.7 D 2 .
  • d 1 ⁇ 0.5 D 2 in particular d 1 0,3 0.3 D 2 , and in particular d 1 0,1 0.1 D 2 .
  • the tub stiffening elements 15 are - viewed in axial section - L-shaped and are partially exposed on the rear wall 13, so that a fastening section 27 is formed.
  • the stator housing 26 is fastened by means of a respective screw 28 to the fastening section 27 of the respective tub stiffening element 15.
  • the function of the washing machine 1 is as follows: In normal operation of the washing machine 1, static and dynamic imbalances occur as a result of the loading of laundry. The static and dynamic imbalances have a negative effect especially when spinning.
  • the rear wall 13 of the tub 3 is stiffened by the tub stiffening elements 15, as a result of which an undesired deformation of the rear wall 13 during spinning is reduced and the drive shaft 17 is stably supported in the radial direction.
  • the forces transmitted from the drive shaft 17 via the bearings 19, 20 to the tub 3 can thus be absorbed simply and efficiently and can be dissipated to the vibration dampers 4 and the suspension 5 or the housing 2.
  • the vat stiffening elements 15 and the stator 22 attached to them result in a type of frame construction which is extremely robust and rigid Has.
  • the rigid construction enables a comparatively small distance between the bearings 19, 20 in the direction of the axis of rotation 8, so that they can be arranged between the drum 6 and the rotor 21. In this way, a compact structure is achieved in the direction of the axis of rotation 8. Because the rotor 21 is completely covered and the rear wall 13 is stiffened, the washing machine 1 generates a comparatively low noise level during operation.
  • the hub 16 is formed separately from the tub stiffening elements 15.
  • the tub stiffening elements 15 are connected to one another by means of a connecting ring 29.
  • the connecting ring 29 is formed in one piece with the tub stiffening elements 15.
  • the tub stiffening elements 15 and the connecting ring 29 form a through opening 30.
  • the hub 16 is arranged in the through opening 30.
  • the hub 16 forms an annular stop 31 which bears against the connecting ring 29 in the inserted state of the hub 16.
  • the stop 31 is connected to the connecting ring 29 by means of screws 32.
  • the hub 16 is thus easy to assemble and replace.
  • the hub 16 is not directly connected to the tub stiffening elements 15.
  • the tub stiffening elements 15 are connected to one another with the connecting ring 29.
  • the tub stiffening elements 15 and the stiffening ring 29 are in the range of Hub 16 surrounded or overmolded by the tub body 14.
  • the hub 16 is formed separately from the tub stiffening elements 15 and the connecting ring 29.
  • the hub 16 is partially surrounded or overmolded by the tub base body 14 and thus bears against the tub base body 14.
  • the tub base body 14 thus forms a damping layer between the hub 16 and the tub stiffening elements 15 and the connecting ring 29.
  • the washing machine 1 is designed as a so-called top-loading washing machine.
  • the laundry opening 10 is formed on an upper side of the tub 3 and can be closed by means of the closure flap 11.
  • the tub 3 forms the circumferential wall 12 extending about the axis of rotation 8, the rear wall or wall 13 running transversely to the axis of rotation 8 and a further rear wall or wall 13 '.
  • the tub base body 14 thus forms the peripheral wall 12 and partially the walls 13, 13 '.
  • the tub 3 is stiffened along the axis of rotation 8 on both walls 13, 13 'by means of the tub stiffening elements 15 already described.
  • the tub stiffening elements 15 are connected to the hub 16 on the wall 13. Correspondingly, the tub stiffening elements 15 are connected to a further hub 16 on the wall 13 '. This enables the drum 6 to be supported on both walls 13, 13 '.
  • the drive shaft 17 is mounted by means of the first bearing 19 on the hub 16 belonging to the wall 13 and by means of the second bearing 20 on the hub 16 belonging to the wall 13 '.
  • the rotor 21 is designed as an outer rotor, the permanent magnets 23 on one of the axes of rotation 8 facing away from the outer side of the electromagnet 25 are arranged.
  • the rear wall or wall 13 and / or the rear wall or wall 13 'can in particular also correspond to the previous exemplary embodiments and the 1 to 4 configured and / or connected to the hub 16.
  • the direct drive motor 7 is in particular only attached to the rear wall or wall 13.

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

Abstract

Eine Waschmaschine (1) umfasst einen Bottich (3), in dem eine Trommel (6) zur Aufnahme von Wäsche angeordnet ist. Die Trommel (6) ist mittels einer Antriebswelle (17) und einem mit der Antriebswelle (17) verbundenen Antriebsmotor (7) um eine Drehachse (8) drehantreibbar. Der Bottich (3) umfasst einen Bottich-Grundkörper (14) und mindestens ein Bottich-Versteifungselement (15). Dadurch, dass der Bottich (3) versteift ist, wird ein einfacher, robuster und kompakter Aufbau der Waschmaschine (1) erzielt.A washing machine (1) comprises a tub (3) in which a drum (6) for holding laundry is arranged. The drum (6) can be driven in rotation about an axis of rotation (8) by means of a drive shaft (17) and a drive motor (7) connected to the drive shaft (17). The tub (3) comprises a tub base body (14) and at least one tub stiffening element (15). Because the tub (3) is stiffened, a simple, robust and compact construction of the washing machine (1) is achieved.

Description

Die Erfindung betrifft eine Waschmaschine gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a washing machine according to the preamble of claim 1.

Aus der EP 2 119 819 B1 ist eine Waschmaschine mit einem Direktantriebssystem bekannt. Die Waschmaschine umfasst einen Bottich und eine drehbar in dem Bottich montierte Trommel, die zur Übertragung einer Antriebskraft über eine Welle mit einem Antriebsmotor verbunden ist. Der Antriebsmotor weist einen Stator und einen mit der Welle verbundenen Rotor auf, der in Richtung einer Drehachse zwischen dem Stator und dem Bottich angeordnet ist. Der Stator ist mit dem Bottich mittels eines Stützteils verbunden, so dass der Rotor aus Sicherheitsgründen nicht zugänglich ist. Der aus einem Polymermaterial bestehende Bottich ist mit einer metallischen Nabe durch Umspritzen verbunden. Die Welle ist mittels Lagern beidseitig des Rotors an der Nabe und an dem Stator drehbar gelagert.From the EP 2 119 819 B1 a washing machine with a direct drive system is known. The washing machine includes a tub and a drum rotatably mounted in the tub, which is connected to a drive motor via a shaft for transmitting a driving force. The drive motor has a stator and a rotor connected to the shaft, which is arranged in the direction of an axis of rotation between the stator and the tub. The stator is connected to the tub by means of a support part, so that the rotor is not accessible for safety reasons. The tub, which is made of a polymer material, is connected to a metallic hub by injection molding. The shaft is rotatably mounted on both sides of the rotor on the hub and on the stator.

Der Erfindung liegt die Aufgabe zugrunde, eine Waschmaschine zu schaffen, die einen einfachen, robusten und kompakten Aufbau hat.The invention has for its object to provide a washing machine which has a simple, robust and compact structure.

Diese Aufgabe wird durch eine Waschmaschine mit den Merkmalen des Anspruchs 1 gelöst. Im Betrieb der Waschmaschine, insbesondere beim Schleudern, treten statische und dynamische Unwuchten auf, die zu erheblichen Kräften an der Antriebswelle führen. Diese Kräfte werden über Lager an den Bottich übertragen und von diesem aufgenommen. Erfindungsgemäß wurde erkannt, dass die Aufnahme der von der Antriebswelle übertragenen Kräfte erheblich verbessert wird, wenn der Bottich-Grundkörper mit mindestens einem Bottich-Versteifungselement versteift wird. Das mindestens eine Bottich-Versteifungselement ist an einer Rückwand des Bottichs angeordnet. Das mindestens eine Bottich-Versteifungselement führt einerseits dazu, dass die auf den Bottich übertragenen Kräfte besser an das Gehäuse der Waschmaschine abgeleitet werden. Andererseits führt das mindestens eine Bottich-Versteifungselement dazu, dass sich der Bottich, insbesondere die Rückwand, aufgrund der Kräfte vergleichsweise weniger deformiert. Durch die geringere Deformation des Bottichs, insbesondere der Rückwand, sind die Lager, in denen die Antriebswelle gelagert ist, besser abgestützt, wodurch unerwünschte Bewegungen der Antriebswelle radial zu der Drehachse im Betrieb der Waschmaschine vermieden werden. Das mindestens eine Bottich-Versteifungselement führt somit zu einem robusteren und steiferen Aufbau der Waschmaschine. Durch den steiferen Aufbau ist eine einfachere und kompaktere Lagerung der Antriebswelle erzielbar.This object is achieved by a washing machine with the features of claim 1. During operation of the washing machine, particularly when spinning, static and dynamic imbalances occur, which lead to considerable forces on the drive shaft. These forces are transferred to the vat via bearings and absorbed by it. According to the invention, it was recognized that the absorption of the forces transmitted by the drive shaft is considerably improved if the tub base body is stiffened with at least one tub stiffening element. The at least one tub stiffening element is arranged on a rear wall of the tub. The at least one tub stiffening element leads on the one hand to the fact that the forces transmitted to the tub are better dissipated to the housing of the washing machine. On the other hand, the at least one tub stiffening element leads to the tub, in particular the rear wall, being deformed comparatively less due to the forces. Due to the lower deformation of the tub, in particular the rear wall, the bearings in which the drive shaft is mounted are better supported, as a result of which undesired movements of the drive shaft radially to the axis of rotation during operation of the washing machine are avoided. The at least one tub stiffening element thus leads to a more robust and rigid construction of the washing machine. The stiffer construction makes it easier and more compact to mount the drive shaft.

Vorzugsweise ist der Bottich-Grundkörper aus einem Kunststoff-Material ausgebildet, insbesondere aus einem Polymer-Material. Das mindestens eine Bottich-Versteifungselement ist vorzugsweise aus einem metallischen Material ausgebildet. Vorzugsweise ist der Stator mit dem Bottich, insbesondere mit der Rückwand, verbunden. Vorzugsweise weist der Bottich mehrere Bottich-Versteifungselemente auf. Die Bottich-Versteifungselemente sind miteinander verbunden und/oder separat voneinander ausgebildet. Die Bottich-Versteifungselemente sind beispielsweise als Bottich-Versteifungsstreben ausgebildet. Die Bottich-Versteifungselemente sind vorzugsweise drehsymmetrisch zu der Drehachse angeordnet. Der Bottich-Grundkörper und das mindestens eine Bottich-Versteifungselement sind vorzugsweise integral ausgebildet.The vat base body is preferably formed from a plastic material, in particular from a polymer material. The at least one tub stiffening element is preferably formed from a metallic material. The stator is preferably connected to the tub, in particular to the rear wall. The tub preferably has a plurality of tub stiffening elements. The tub stiffening elements are connected to one another and / or are formed separately from one another. The tub stiffening elements are designed, for example, as tub stiffening struts. The tub stiffening elements are preferably arranged rotationally symmetrical to the axis of rotation. The tub base body and the at least one tub stiffening element are preferably integrally formed.

Der Antriebsmotor ist als elektrischer Antriebsmotor, insbesondere als elektrischer Direkt-Antriebsmotor, ausgebildet. Der Rotor umfasst insbesondere Permanentmagnete.The drive motor is designed as an electrical drive motor, in particular as an electrical direct drive motor. The rotor in particular comprises permanent magnets.

Eine Waschmaschine nach Anspruch 2 gewährleistet einen einfachen, robusten und kompakten Aufbau. Durch das vergleichsweise steifere zweite Material des mindestens einen Bottich-Versteifungselements wird das erste Material des Bottich-Grundkörpers versteift. Das erste Material ist insbesondere ein Kunststoff-Material, wohingegen das zweite Material insbesondere ein metallisches Material ist. Dadurch, dass der Bottich-Grundkörper aus Kunststoff-Material ausgebildet ist, ist der Bottich-Grundkörper einfach und kostengünstig herstellbar. Durch das metallische Material wird der Bottich-Grundkörper bzw. das Kunststoff-Material versteift.A washing machine according to claim 2 ensures a simple, robust and compact structure. The comparatively stiffer second material of the at least one tub stiffening element stiffens the first material of the tub body. The first material is in particular a plastic material, whereas the second material is in particular a metallic material. Because the tub base body is made of plastic material, the tub base body can be produced simply and inexpensively. The tub base or the plastic material is stiffened by the metallic material.

Eine Waschmaschine nach Anspruch 3 gewährleistet einen einfachen, robusten und kompakten Aufbau. Das mindestens eine Bottich-Versteifungselement ist insbesondere mit dem Kunststoff-Material umspritzt, so dass der Bottich-Grundkörper und das mindestens eine Bottich-Versteifungselement integral ausgebildet sind. Der Bottich ist insbesondere derart hergestellt, dass das mindestens eine Bottich-Versteifungselement beim Spritzgießen des Bottich-Grundkörpers als Einlegebauteil verwendet wird. Die Herstellung und der Aufbau des Bottichs sind hierdurch einfach.A washing machine according to claim 3 ensures a simple, robust and compact structure. The at least one tub stiffening element is in particular extrusion-coated with the plastic material, so that the tub base body and the at least one tub stiffening element are integrally formed. The tub is in particular manufactured in such a way that the at least one tub stiffening element is used as an insert during injection molding of the tub body. This makes the manufacture and construction of the tub simple.

Eine Waschmaschine nach Anspruch 4 gewährleistet einen robusten und kompakten Aufbau. Der Außendurchmesser D1 des mindestens einen Bottich-Versteifungselements radial zu der Drehachse ermöglicht eine großflächige Versteifung einer Rückwand des Bottichs. Es gilt insbesondere: D1 ≤ D2. Vorzugsweise gilt für einen Innendurchmesser d1 des mindestens einen Bottich-Versteifungselements: d1 ≤ 0,5 · D2, insbesondere d1 ≤ 0,3 · D2, und insbesondere d1 ≤ 0,1 · D2.A washing machine according to claim 4 ensures a robust and compact structure. The outer diameter D 1 of the at least one tub stiffening element radially to the axis of rotation enables a large area stiffening of a rear wall of the tub. The following applies in particular: D 1 ≤ D 2 . Preferably, the inner diameter d 1 of the at least one applies Vat stiffening element: d 1 ≤ 0.5 D 2 , in particular d 1 ≤ 0.3 D 2 , and in particular d 1 ≤ 0.1 D 2 .

Eine Waschmaschine nach Anspruch 5 gewährleistet einen robusten und kompakten Aufbau. Das mindestens eine Bottich-Versteifungselement ist unmittelbar mit dem Stator, beispielsweise mit einem Stator-Gehäuse, verbunden. Die Verbindung erfolgt beispielsweise durch Verschraubung. Durch die Verbindung wird der Bottich, insbesondere eine Rückwand des Bottichs, an dem Stator abgestützt, so dass der Stator und das mindestens eine Bottich-Versteifungselement eine äußerst steife Konstruktion ausbilden. Zusätzlich wird eine einfache Befestigung des elektrischen Antriebsmotors ermöglicht.A washing machine according to claim 5 ensures a robust and compact structure. The at least one tub stiffening element is connected directly to the stator, for example to a stator housing. The connection is made, for example, by screwing. The tub, in particular a rear wall of the tub, is supported on the stator by the connection, so that the stator and the at least one tub stiffening element form an extremely rigid construction. In addition, the electric drive motor can be easily attached.

Eine Waschmaschine nach Anspruch 6 gewährleistet einen einfachen und robusten Aufbau. Der Bottich umfasst mindestens eine Nabe, die an mindestens einer Rückwand des Bottichs angeordnet ist. Die Nabe ist insbesondere aus einem Material, das im Vergleich zu einem Material des Bottich-Grundkörpers steifer ist. Vorzugsweise ist die Nabe aus einem metallischen Material. Die Nabe ist insbesondere aus demselben Material wie das mindestens eine Bottich-Versteifungselement. Die Nabe ist mit dem mindestens einen Bottich-Versteifungselement verbunden und/oder separat zu dem mindestens einen Bottich-Versteifungselement ausgebildet. Zwischen der Antriebswelle und der Nabe ist mindestens ein Lager, vorzugsweise mindestens zwei Lager, angeordnet. Die Nabe bildet für das mindestens eine Lager einen jeweiligen Lagersitz aus. Die Nabe ist vorzugsweise an dem Bottich-Grundkörper und/oder an dem mindestens einen Bottich-Versteifungselement befestigt. Bei einer Ausgestaltung der Waschmaschine als Toplader-Waschmaschine weist der Bottich vorzugsweise zwei Naben auf, die entlang der Drehachse an zwei Seiten der Trommel angeordnet sind. Die Naben sind jeweils an einer Rückwand des Bottichs angeordnet. Hierzu ist die jeweilige Nabe vorzugsweise an dem Bottich-Grundkörper und/oder an dem mindestens einen Bottich-Versteifungselement befestigt. Vorzugsweise ist die erste Rückwand und die zweite Rückwand mittels mindestens einem Bottich-Versteifungselement versteift. Die jeweilige Nabe bildet für mindestens ein Lager einen jeweiligen Lagersitz aus.A washing machine according to claim 6 ensures a simple and robust structure. The tub comprises at least one hub, which is arranged on at least one rear wall of the tub. The hub is in particular made of a material that is stiffer in comparison to a material of the tub base body. The hub is preferably made of a metallic material. The hub is in particular made of the same material as the at least one tub stiffening element. The hub is connected to the at least one tub stiffening element and / or is formed separately from the at least one tub stiffening element. At least one bearing, preferably at least two bearings, is arranged between the drive shaft and the hub. The hub forms a respective bearing seat for the at least one bearing. The hub is preferably attached to the tub base body and / or to the at least one tub stiffening element. In a configuration of the washing machine as a top-loading washing machine, the tub preferably has two hubs, which are arranged along the axis of rotation on two sides of the drum are. The hubs are each arranged on a rear wall of the tub. For this purpose, the respective hub is preferably attached to the tub base body and / or to the at least one tub stiffening element. The first rear wall and the second rear wall are preferably stiffened by means of at least one tub stiffening element. The respective hub forms a respective bearing seat for at least one bearing.

Eine Waschmaschine nach Anspruch 7 gewährleistet einen einfachen, robusten und kompakten Aufbau. Die Nabe ist vorzugsweise einteilig mit dem mindestens einen Bottich-Versteifungselement ausgebildet. Vorzugsweise sind die Nabe und das mindestens eine Bottich-Versteifungselement aus einem metallischen Material ausgebildet. Die jeweilige Nabe ist insbesondere an einer jeweiligen Rückwand des Bottichs befestigt.A washing machine according to claim 7 ensures a simple, robust and compact structure. The hub is preferably formed in one piece with the at least one tub stiffening element. The hub and the at least one tub stiffening element are preferably formed from a metallic material. The respective hub is in particular fastened to a respective rear wall of the tub.

Eine Waschmaschine nach Anspruch 8 gewährleistet einen einfachen, robusten und kompakten Aufbau. Vorzugsweise ist die Nabe mit dem Kunststoff-Material umspritzt. Beim Spritzgießen des Bottich-Grundkörpers wird die Nabe als Einlegebauteil verwendet, so dass der Bottich-Grundkörper und die Nabe integral ausgebildet sind.A washing machine according to claim 8 ensures a simple, robust and compact structure. The hub is preferably extrusion-coated with the plastic material. When the tub base body is injection molded, the hub is used as an insert, so that the tub base body and the hub are integrally formed.

Eine Waschmaschine nach Anspruch 9 gewährleistet einen einfachen und kompakten Aufbau. Aufgrund der vergleichsweise geringeren Deformation des Bottichs bzw. einer Rückwand des Bottichs wird die unerwünschte Bewegungsfreiheit der Antriebswelle radial zu der Drehachse im Betrieb der Waschmaschine, insbesondere beim Schleudern, reduziert. Hierdurch wird auch die Belastung der Lager, in denen die Antriebswelle gelagert ist, reduziert. Dementsprechend ist es ausreichend, die Antriebswelle mit mindestens zwei Lagern zu lagern, die - in Richtung der Drehachse betrachtet - zwischen der Trommel und dem Rotor angeordnet sind. Hierdurch wird in Richtung der Drehachse ein vergleichsweise kompakterer Aufbau erzielt. Vorzugsweise weist die Waschmaschine kein Lager auf, das bezogen auf den Rotor gegenüberliegend zu dem Bottich angeordnet ist und beispielsweise das freie Ende der Antriebswelle an dem Stator lagert. Vorzugsweise sind die mindestens zwei Lager an einer Nabe abgestützt, die mit dem Bottich-Grundkörper und/oder dem mindestens einen Bottich-Versteifungselement verbunden ist.A washing machine according to claim 9 ensures a simple and compact structure. Due to the comparatively less deformation of the tub or a rear wall of the tub, the undesired freedom of movement of the drive shaft radially to the axis of rotation during operation of the washing machine, in particular when spinning, is reduced. This also reduces the load on the bearings in which the drive shaft is mounted. Accordingly, it is sufficient to support the drive shaft with at least two bearings, which - viewed in the direction of the axis of rotation - are arranged between the drum and the rotor. This will achieved a comparatively more compact structure in the direction of the axis of rotation. The washing machine preferably has no bearing, which is arranged opposite the tub in relation to the rotor and, for example, supports the free end of the drive shaft on the stator. The at least two bearings are preferably supported on a hub which is connected to the tub base body and / or the at least one tub stiffening element.

Eine Waschmaschine nach Anspruch 10 gewährleistet einen einfachen, robusten und kompakten Aufbau. Bei einer Ausgestaltung der Waschmaschine als Toplader-Waschmaschine ist die Antriebswelle an zwei Seiten der Trommel mittels jeweils eines Lagers an dem Bottich gelagert. Vorzugsweise ist ein erstes Lager - entlang der Drehachse betrachtet - zwischen der Trommel und dem Rotor angeordnet und ein zweites Lager an einer gegenüberliegenden Seite der Trommel angeordnet. Vorzugsweise sind die mindestens zwei Lager an Naben abgestützt, die an zwei Seiten der Trommel angeordnet sind. Die Naben sind vorzugsweise mit dem Bottich-Grundkörper und/oder mit mindestens einem zugehörigen Bottich-Versteifungselement verbunden.A washing machine according to claim 10 ensures a simple, robust and compact structure. In an embodiment of the washing machine as a top loading washing machine, the drive shaft is mounted on two sides of the drum by means of a bearing on the tub. A first bearing — viewed along the axis of rotation — is preferably arranged between the drum and the rotor, and a second bearing is arranged on an opposite side of the drum. The at least two bearings are preferably supported on hubs which are arranged on two sides of the drum. The hubs are preferably connected to the tub base body and / or to at least one associated tub stiffening element.

Eine Waschmaschine nach Anspruch 11 gewährleistet einen einfachen und kompakten Aufbau. Dadurch, dass die Antriebswelle nicht mittels eines zusätzlichen Lagers an dem Stator abgestützt ist und die Antriebswelle dementsprechend mit dem Stator nicht verbunden ist, wird ein einfacher und kompakter Aufbau erzielt. Der Stator umfasst insbesondere ein Stator-Gehäuse, das als Deckel zum Abdecken der Antriebswelle ausgebildet ist. Die Antriebswelle ist somit durch den Stator vollständig abgedeckt, so dass die Waschmaschine ohne zusätzliche Bauteile keinen Zugriff zu der Antriebswelle ermöglicht und somit die Sicherheitsvorschriften erfüllt. Das Stator-Gehäuse weist insbesondere eine Sackloch-Ausnehmung auf, die eine Aufnahme des freien Endes der Antriebswelle ermöglicht.A washing machine according to claim 11 ensures a simple and compact structure. Because the drive shaft is not supported on the stator by means of an additional bearing and the drive shaft is accordingly not connected to the stator, a simple and compact construction is achieved. The stator in particular comprises a stator housing which is designed as a cover for covering the drive shaft. The drive shaft is thus completely covered by the stator, so that the washing machine does not allow access to the drive shaft without additional components and thus fulfills the safety regulations. The The stator housing has, in particular, a blind hole recess which enables the free end of the drive shaft to be received.

Weitere Merkmale, Vorteile und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung mehrerer Ausführungsbeispiele. Es zeigen:

Fig. 1
eine schematische Ansicht einer Waschmaschine mit einem versteiften Bottich gemäß einem ersten Ausführungsbeispiel,
Fig. 2
eine vergrößerte Ansicht des versteiften Bottichs im Bereich eines Bottich-Versteifungselements,
Fig. 3
eine vergrößerte Ansicht eines versteiften Bottichs gemäß einem zweiten Ausführungsbeispiel im Bereich eines Bottich-Versteifungselements, und
Fig. 4
eine vergrößerte Ansicht eines versteiften Bottichs gemäß einem dritten Ausführungsbeispiel im Bereich eines Bottich-Versteifungselements, und
Fig. 5
eine schematische Ansicht einer Waschmaschine mit einem versteiften Bottich gemäß einem vierten Ausführungsbeispiel.
Further features, advantages and details of the invention result from the following description of several exemplary embodiments. Show it:
Fig. 1
1 shows a schematic view of a washing machine with a stiffened tub according to a first exemplary embodiment,
Fig. 2
2 shows an enlarged view of the stiffened tub in the area of a tub stiffening element,
Fig. 3
3 shows an enlarged view of a stiffened tub according to a second exemplary embodiment in the area of a tub stiffening element, and
Fig. 4
3 shows an enlarged view of a stiffened tub according to a third exemplary embodiment in the region of a tub stiffening element, and
Fig. 5
is a schematic view of a washing machine with a stiffened tub according to a fourth embodiment.

Nachfolgend ist anhand der Fig. 1 und 2 ein erstes Ausführungsbeispiel der Erfindung beschrieben. Eine Waschmaschine 1 weist ein Gehäuse 2 auf, in dem ein Bottich 3 angeordnet ist. Der Bottich 3 ist in dem Gehäuse 2 mittels Schwingungsdämpfern 4 und einer federnden Aufhängung 5 schwingungsdämpfend gelagert. In dem Bottich 3 ist eine Trommel 6 zur Aufnahme von Wäsche drehbar gelagert. Die Trommel 6 ist mittels eines elektrischen Direkt-Antriebsmotors 7 um eine Drehachse 8 drehantreibbar.The following is based on the Fig. 1 and 2nd described a first embodiment of the invention. A washing machine 1 has a housing 2 in which a tub 3 is arranged. The tub 3 is mounted in the housing 2 by means of vibration dampers 4 and a resilient suspension 5 to dampen vibrations. In the tub 3 is a drum 6 for receiving of laundry rotatably mounted. The drum 6 can be driven in rotation about an axis of rotation 8 by means of an electric direct drive motor 7.

Die Waschmaschine 1 ist als sogenannte Frontlader-Waschmaschine ausgebildet. An einer Vorderseite 9 weist der Bottich 3 eine Wäscheöffnung 10 zum Befüllen der Trommel 6 mit Wäsche auf. Die Wäscheöffnung 10 ist in üblicher Weise mittels einer Verschlussklappe 11 verschließbar. Die Verschlussklappe 11 ist verschwenkbar an dem Gehäuse 2 befestigt.The washing machine 1 is designed as a so-called front loading washing machine. On a front 9, the tub 3 has a laundry opening 10 for filling the drum 6 with laundry. The laundry opening 10 can be closed in the usual way by means of a closure flap 11. The closure flap 11 is pivotally attached to the housing 2.

Der Bottich 3 bildet eine um die Drehachse 8 verlaufende Umfangswand 12 und eine quer zu der Drehachse 8 verlaufende Rückwand 13 aus. Der Bottich 3 umfasst einen Bottich-Grundkörper 14, mehrere Bottich-Versteifungselemente 15 und eine Nabe 16. Der Bottich-Grundkörper 14 ist aus einem Kunststoff-Material hergestellt. Der Bottich-Grundkörper 14 bildet die Umfangswand 12 und teilweise die Rückwand 13 aus. Die Bottich-Versteifungselemente 15 und die Nabe 16 sind aus einem metallischen Material hergestellt und einteilig ausgebildet. Die Bottich-Versteifungselemente 15 und die Nabe 16 werden beim Spritzgießen des Bottich-Grundkörpers 14 als Einlegebauteil verwendet, so dass die Bottich-Versteifungselemente 15 und die Nabe 16 von dem Bottich-Grundkörper 14 umgeben bzw. umspritzt sind.The tub 3 forms a circumferential wall 12 extending around the axis of rotation 8 and a rear wall 13 extending transversely to the axis of rotation 8. The tub 3 comprises a tub base body 14, a plurality of tub stiffening elements 15 and a hub 16. The tub base body 14 is made of a plastic material. The tub base body 14 forms the peripheral wall 12 and partially the rear wall 13. The tub stiffening elements 15 and the hub 16 are made of a metallic material and are formed in one piece. The tub stiffening elements 15 and the hub 16 are used during the injection molding of the tub base body 14 as an insert component, so that the tub stiffening elements 15 and the hub 16 are surrounded or encapsulated by the tub base body 14.

Die Nabe 16 ist rotationssymmetrisch ausgebildet. Zur Durchführung einer Antriebswelle 17 bildet die Nabe 16 eine Durchgangsöffnung 18 aus. Die Nabe 16 ist konzentrisch in der Rückwand 13 angeordnet. Die Antriebswelle 17 ist drehfest mit der Trommel 6 verbunden und durch die Durchgangsöffnung 18 geführt und mittels eines ersten Lagers 19 und eines zweiten Lagers 20 an der Nabe 16 abgestützt. Die Nabe 16 bildet hierzu Lagersitze aus.The hub 16 is rotationally symmetrical. The hub 16 forms a through opening 18 for the passage of a drive shaft 17. The hub 16 is arranged concentrically in the rear wall 13. The drive shaft 17 is connected in a rotationally fixed manner to the drum 6 and is guided through the through opening 18 and is supported on the hub 16 by means of a first bearing 19 and a second bearing 20. For this purpose, the hub 16 forms bearing seats.

Der Direkt-Antriebsmotor 7 umfasst einen Rotor 21 und einen zugehörigen Stator 22. Der Rotor 21 umfasst Permanentmagnete 23, die zu der Drehachse 8 radial beabstandet an einer Rotor-Nabe 24 befestigt sind. Der Rotor 21 ist als Innen-Rotor ausgebildet, wobei die Permanentmagnete 23 an einer der Drehachse 8 zugewandten inneren Seite von Elektromagneten 25 des Stators 22 angeordnet sind. Der Rotor 21 ist mittels der Rotor-Nabe 24 drehfest an der Antriebswelle 17 befestigt. Der Rotor 21 ist derart angeordnet, dass die Lager 19, 20 - in Richtung der Drehachse 8 betrachtet - zwischen der Trommel 6 und dem Rotor 21 angeordnet sind. Der Rotor 21 ist weiterhin - in Richtung der Drehachse 8 betrachtet - zwischen dem Bottich 3 bzw. der Rückwand 13 und dem Stator 22 angeordnet. Der Stator 22 ist relativ zu dem Bottich 3 drehfest angeordnet.The direct drive motor 7 comprises a rotor 21 and an associated stator 22. The rotor 21 comprises permanent magnets 23, which are fastened to a rotor hub 24 at a radial distance from the axis of rotation 8. The rotor 21 is designed as an inner rotor, the permanent magnets 23 being arranged on an inner side of the electromagnet 25 of the stator 22 facing the axis of rotation 8. The rotor 21 is fixed in a rotationally fixed manner to the drive shaft 17 by means of the rotor hub 24. The rotor 21 is arranged such that the bearings 19, 20 - viewed in the direction of the axis of rotation 8 - are arranged between the drum 6 and the rotor 21. The rotor 21 is also - viewed in the direction of the axis of rotation 8 - arranged between the tub 3 or the rear wall 13 and the stator 22. The stator 22 is arranged rotatably relative to the tub 3.

Der Stator 22 umfasst die Elektromagnete 25 und ein Stator-Gehäuse 26. Die Elektromagnete 25 sind an dem Stator-Gehäuse 26 befestigt. Die Elektromagnete 25 sind derart angeordnet, dass diese in üblicher Weise mit den Permanentmagneten 23 des Rotors 21 zusammenwirken. Das Stator-Gehäuse 26 ist an dem Bottich 3 befestigt. Das Stator-Gehäuse 26 ist nicht mit der Antriebswelle 17 verbunden, so dass der Stator 22 ausschließlich mit dem Bottich 3 verbunden ist. Das Stator-Gehäuse 26 ist als Deckel ausgebildet und unterbindet den Zugang zu dem Rotor 21 und der Antriebswelle 17.The stator 22 comprises the electromagnets 25 and a stator housing 26. The electromagnets 25 are fastened to the stator housing 26. The electromagnets 25 are arranged in such a way that they cooperate with the permanent magnets 23 of the rotor 21 in the usual way. The stator housing 26 is attached to the tub 3. The stator housing 26 is not connected to the drive shaft 17, so that the stator 22 is exclusively connected to the tub 3. The stator housing 26 is designed as a cover and prevents access to the rotor 21 and the drive shaft 17.

Die Bottich-Versteifungselemente 15 erstrecken sich ausgehend von der Nabe 16 radial zu der Drehachse 8. Die Bottich-Versteifungselemente 15 sind beispielsweise als Versteifungsstreben ausgebildet. Der Bottich 3 weist vorzugsweise eine Anzahl N an Bottich-Versteifungselementen 15 auf, wobei gilt: 2 ≤ N ≤ 12, insbesondere 3 ≤ N ≤ 10, und insbesondere 4 ≤ N ≤ 8. Die Bottich-Versteifungselemente 15 sind drehsymmetrisch zu der Drehachse 8 angeordnet.The tub stiffening elements 15 extend radially from the hub 16 to the axis of rotation 8. The tub stiffening elements 15 are designed, for example, as stiffening struts. The tub 3 preferably has a number N of tub stiffening elements 15, where: 2 N N 12 12, in particular 3 N N 10 10, and in particular 4 ≤ N ≤ 8. The tub stiffening elements 15 are arranged rotationally symmetrical to the axis of rotation 8.

Die Bottich-Versteifungselemente 15 definieren radial zu der Drehachse 8 einen Außendurchmesser D1 und einen Innendurchmesser d1. Im Verhältnis zu einem Außendurchmesser D2 des Bottichs 3 gilt: D1 ≥ 0,3 · D2, insbesondere D1 ≥ 0,5 · D2, insbesondere D1 ≥ 0,7 · D2. Ferner gilt: d1 ≤ 0,5 · D2, insbesondere d1 ≤ 0,3 · D2, und insbesondere d1 ≤ 0,1 · D2.The tub stiffening elements 15 define an outer diameter D 1 and an inner diameter d 1 radially to the axis of rotation 8. In relation to an outer diameter D 2 of the tub 3, the following applies: D 1 0,3 0.3 D 2 , in particular D 1 0,5 0.5 D 2 , in particular D 1 0,7 0.7 D 2 . The following also applies: d 1 ≤ 0.5 D 2 , in particular d 1 0,3 0.3 D 2 , and in particular d 1 0,1 0.1 D 2 .

Die Bottich-Versteifungselemente 15 sind - im Axialschnitt betrachtet - L-förmig ausgebildet und liegen an der Rückwand 13 teilweise frei, so dass ein Befestigungsabschnitt 27 ausgebildet wird. Das Stator-Gehäuse 26 ist mittels einer jeweiligen Schraube 28 an dem Befestigungsabschnitt 27 des jeweiligen Bottich-Versteifungselements 15 befestigt.The tub stiffening elements 15 are - viewed in axial section - L-shaped and are partially exposed on the rear wall 13, so that a fastening section 27 is formed. The stator housing 26 is fastened by means of a respective screw 28 to the fastening section 27 of the respective tub stiffening element 15.

Die Funktion der Waschmaschine 1 ist wie folgt:
Im üblichen Betrieb der Waschmaschine 1 treten statische und dynamische Unwuchten in Folge der Beladung mit Wäsche auf. Die statischen und dynamischen Unwuchten wirken sich insbesondere beim Schleudern negativ aus. Durch die Bottich-Versteifungselemente 15 wird die Rückwand 13 des Bottichs 3 versteift, wodurch eine unerwünschte Deformation der Rückwand 13 beim Schleudern reduziert wird und die Antriebswelle 17 in radialer Richtung stabil gelagert ist. Die von der Antriebswelle 17 über die Lager 19, 20 auf den Bottich 3 übertragenen Kräfte können somit einfach und effizient aufgenommen und an die Schwingungsdämpfer 4 und die Aufhängung 5 bzw. das Gehäuse 2 abgeleitet werden. Durch die Bottich-Versteifungselemente 15 und den daran befestigten Stator 22 wird eine Art Rahmenkonstruktion erzielt, die einen äußerst robusten und steifen Aufbau hat. Durch die steife Konstruktion wird ein vergleichsweise geringer Abstand der Lager 19, 20 in Richtung der Drehachse 8 ermöglicht, so dass diese zwischen der Trommel 6 und dem Rotor 21 angeordnet werden können. Hierdurch wird in Richtung der Drehachse 8 ein kompakter Aufbau erzielt. Dadurch, dass der Rotor 21 vollständig abgedeckt ist und die Rückwand 13 versteift ist, erzeugt die Waschmaschine 1 im Betrieb einen vergleichsweise geringen Lärmpegel.The function of the washing machine 1 is as follows:
In normal operation of the washing machine 1, static and dynamic imbalances occur as a result of the loading of laundry. The static and dynamic imbalances have a negative effect especially when spinning. The rear wall 13 of the tub 3 is stiffened by the tub stiffening elements 15, as a result of which an undesired deformation of the rear wall 13 during spinning is reduced and the drive shaft 17 is stably supported in the radial direction. The forces transmitted from the drive shaft 17 via the bearings 19, 20 to the tub 3 can thus be absorbed simply and efficiently and can be dissipated to the vibration dampers 4 and the suspension 5 or the housing 2. The vat stiffening elements 15 and the stator 22 attached to them result in a type of frame construction which is extremely robust and rigid Has. The rigid construction enables a comparatively small distance between the bearings 19, 20 in the direction of the axis of rotation 8, so that they can be arranged between the drum 6 and the rotor 21. In this way, a compact structure is achieved in the direction of the axis of rotation 8. Because the rotor 21 is completely covered and the rear wall 13 is stiffened, the washing machine 1 generates a comparatively low noise level during operation.

Nachfolgend ist anhand von Fig. 3 ein zweites Ausführungsbeispiel der Erfindung beschrieben. Im Unterschied zu dem vorangegangenen Ausführungsbeispiel ist die Nabe 16 separat zu den Bottich-Versteifungselementen 15 ausgebildet. Die Bottich-Versteifungselemente 15 sind mittels eines Verbindungsrings 29 miteinander verbunden. Der Verbindungsring 29 ist einteilig mit den Bottich-Versteifungselementen 15 ausgebildet. Die Bottich-Versteifungselemente 15 und der Verbindungsring 29 bilden eine Durchgangsöffnung 30 aus. Die Nabe 16 ist in der Durchgangsöffnung 30 angeordnet. Die Nabe 16 bildet einen ringförmigen Anschlag 31 aus, der im eingeführten Zustand der Nabe 16 gegen den Verbindungsring 29 anliegt. Mittels Schrauben 32 ist der Anschlag 31 mit dem Verbindungsring 29 verbunden. Die Nabe 16 ist hierdurch einfach montierbar und auswechselbar. Hinsichtlich des weiteren Aufbaus und der weiteren Funktionsweise wird auf das vorangegangene Ausführungsbeispiel verwiesen.The following is based on Fig. 3 described a second embodiment of the invention. In contrast to the previous exemplary embodiment, the hub 16 is formed separately from the tub stiffening elements 15. The tub stiffening elements 15 are connected to one another by means of a connecting ring 29. The connecting ring 29 is formed in one piece with the tub stiffening elements 15. The tub stiffening elements 15 and the connecting ring 29 form a through opening 30. The hub 16 is arranged in the through opening 30. The hub 16 forms an annular stop 31 which bears against the connecting ring 29 in the inserted state of the hub 16. The stop 31 is connected to the connecting ring 29 by means of screws 32. The hub 16 is thus easy to assemble and replace. With regard to the further structure and the further mode of operation, reference is made to the previous exemplary embodiment.

Nachfolgend ist anhand von Fig. 4 ein drittes Ausführungsbeispiel der Erfindung beschrieben. Im Unterschied zu den vorangegangenen Ausführungsbeispielen ist die Nabe 16 nicht mit den Bottich-Versteifungselementen 15 unmittelbar verbunden. Die Bottich-Versteifungselemente 15 sind mit dem Verbindungsring 29 miteinander verbunden. Die Bottich-Versteifungselemente 15 und der Versteifungsring 29 sind im Bereich der Nabe 16 von dem Bottich-Grundkörper 14 umgeben bzw. umspritzt. Die Nabe 16 ist separat zu den Bottich-Versteifungselementen 15 und dem Verbindungsring 29 ausgebildet. Die Nabe 16 ist teilweise von dem Bottich-Grundkörper 14 umgeben bzw. umspritzt und liegt somit gegen den Bottich-Grundkörper 14 an. Der Bottich-Grundkörper 14 bildet somit zwischen der Nabe 16 und den Bottich-Versteifungselementen 15 und dem Verbindungsring 29 eine Dämpfungsschicht aus. Hinsichtlich des weiteren Aufbaus und der weiteren Funktionsweise wird auf die vorangegangenen Ausführungsbeispiele verwiesen.The following is based on Fig. 4 described a third embodiment of the invention. In contrast to the previous exemplary embodiments, the hub 16 is not directly connected to the tub stiffening elements 15. The tub stiffening elements 15 are connected to one another with the connecting ring 29. The tub stiffening elements 15 and the stiffening ring 29 are in the range of Hub 16 surrounded or overmolded by the tub body 14. The hub 16 is formed separately from the tub stiffening elements 15 and the connecting ring 29. The hub 16 is partially surrounded or overmolded by the tub base body 14 and thus bears against the tub base body 14. The tub base body 14 thus forms a damping layer between the hub 16 and the tub stiffening elements 15 and the connecting ring 29. With regard to the further structure and the further mode of operation, reference is made to the previous exemplary embodiments.

Nachfolgend ist anhand von Fig. 5 ein viertes Ausführungsbeispiel der Erfindung beschrieben. Im Unterschied zu den vorangegangenen Ausführungsbeispielen ist die Waschmaschine 1 als sogenannte Toplader-Waschmaschine ausgebildet. Die Wäscheöffnung 10 ist an einer Oberseite des Bottichs 3 ausgebildet und mittels der Verschlussklappe 11 verschließbar. Der Bottich 3 bildet die um die Drehachse 8 verlaufende Umfangswand 12, die quer zu der Drehachse 8 verlaufende Rückwand bzw. Wand 13 und eine weitere Rückwand bzw. Wand 13' aus. Der Bottich-Grundkörper 14 bildet somit die Umfangswand 12 und teilweise die Wände 13, 13' aus. Der Bottich 3 ist entlang der Drehachse 8 an beiden Wänden 13, 13' mittels der bereits beschriebenen Bottich-Versteifungselemente 15 versteift. Die Bottich-Versteifungselemente 15 sind an der Wand 13 mit der Nabe 16 verbunden. Entsprechend sind die Bottich-Versteifungselemente 15 an der Wand 13' mit einer weiteren Nabe 16 verbunden. Dies ermöglicht eine Lagerung der Trommel 6 an beiden Wänden 13, 13'. Die Antriebswelle 17 ist mittels des ersten Lagers 19 an der zu der Wand 13 gehörigen Nabe 16 gelagert und mittels des zweiten Lagers 20 an der zu der Wand 13' gehörigen Nabe 16 gelagert. Der Rotor 21 ist als Au-ßen-Rotor ausgebildet, wobei die Permanentmagnete 23 an einer der Drehachse 8 abgewandten äußeren Seite der Elektromagnete 25 angeordnet sind. Hinsichtlich des weiteren Aufbaus und der weiteren Funktionsweise wird auf die vorangegangenen Ausführungsbeispiele verwiesen. Die Rückwand bzw. Wand 13 und/oder die Rückwand bzw. Wand 13' kann insbesondere auch entsprechend den vorangegangenen Ausführungsbeispielen und den Fig. 1 bis 4 ausgestaltet und/oder mit der Nabe 16 verbunden sein. Der Direkt-Antriebsmotor 7 ist insbesondere lediglich an der Rückwand bzw. Wand 13 befestigt.The following is based on Fig. 5 described a fourth embodiment of the invention. In contrast to the previous exemplary embodiments, the washing machine 1 is designed as a so-called top-loading washing machine. The laundry opening 10 is formed on an upper side of the tub 3 and can be closed by means of the closure flap 11. The tub 3 forms the circumferential wall 12 extending about the axis of rotation 8, the rear wall or wall 13 running transversely to the axis of rotation 8 and a further rear wall or wall 13 '. The tub base body 14 thus forms the peripheral wall 12 and partially the walls 13, 13 '. The tub 3 is stiffened along the axis of rotation 8 on both walls 13, 13 'by means of the tub stiffening elements 15 already described. The tub stiffening elements 15 are connected to the hub 16 on the wall 13. Correspondingly, the tub stiffening elements 15 are connected to a further hub 16 on the wall 13 '. This enables the drum 6 to be supported on both walls 13, 13 '. The drive shaft 17 is mounted by means of the first bearing 19 on the hub 16 belonging to the wall 13 and by means of the second bearing 20 on the hub 16 belonging to the wall 13 '. The rotor 21 is designed as an outer rotor, the permanent magnets 23 on one of the axes of rotation 8 facing away from the outer side of the electromagnet 25 are arranged. With regard to the further structure and the further mode of operation, reference is made to the previous exemplary embodiments. The rear wall or wall 13 and / or the rear wall or wall 13 'can in particular also correspond to the previous exemplary embodiments and the 1 to 4 configured and / or connected to the hub 16. The direct drive motor 7 is in particular only attached to the rear wall or wall 13.

Claims (11)

Waschmaschine mit - einem Bottich (3), - einer in dem Bottich (3) angeordneten Trommel (6) zur Aufnahme von Wäsche, - einer Antriebswelle (17), die -- drehfest mit der Trommel (6) verbunden ist und -- relativ zu dem Bottich (3) um eine Drehachse (8) drehbar gelagert ist, - einem Antriebsmotor (7) zum Drehantreiben der Trommel (6) um die Drehachse (8) mit -- einem Stator (22), der relativ zu dem Bottich (3) drehfest angeordnet ist, -- einem Rotor (21), der zwischen dem Bottich (3) und dem Stator (22) angeordnet und mit der Antriebswelle (17) drehfest verbunden ist, dadurch gekennzeichnet,
dass der Bottich (3) einen Bottich-Grundkörper (14) und mindestens ein Bottich-Versteifungselement (15) umfasst.Washing machine with - a vat (3), a drum (6) arranged in the tub (3) for holding laundry, - A drive shaft (17), the - Is rotatably connected to the drum (6) and - is rotatably mounted relative to the tub (3) about an axis of rotation (8), - A drive motor (7) for driving the drum (6) around the axis of rotation (8) - a stator (22) which is arranged in a rotationally fixed manner relative to the tub (3), a rotor (21) which is arranged between the tub (3) and the stator (22) and is connected to the drive shaft (17) in a rotationally fixed manner, characterized,
that the tub (3) comprises a tub base body (14) and at least one tub stiffening element (15). Waschmaschine nach Anspruch 1, dadurch gekennzeichnet,
dass der Bottich-Grundkörper (14) aus einem ersten Material und das mindestens eine Bottich-Versteifungselement (15) aus einem zweiten Material ausgebildet ist, wobei das zweite Material im Vergleich zu dem ersten Material steifer ist.Washing machine according to claim 1, characterized in
that the tub base body (14) is made of a first material and the at least one tub stiffening element (15) is made of a second material, the second material being more rigid than the first material. Waschmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Bottich-Grundkörper (14) aus einem Kunststoff-Material ausgebildet ist und das mindestens eine Bottich-Versteifungselement (15) zumindest bereichsweise von dem Kunststoff-Material umgeben ist.Washing machine according to claim 1 or 2, characterized in that that the tub base body (14) is formed from a plastic material and the at least one tub stiffening element (15) is at least partially surrounded by the plastic material. Waschmaschine nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet,
dass das mindestens eine Bottich-Versteifungselement (15) einen Au-ßendurchmesser D1 und der Bottich (3) einen Außendurchmesser D2 definieren, wobei gilt: D1 ≥ 0,3 · D2, insbesondere D1 ≥ 0,5 · D2, insbesondere D1 ≥ 0,7 · D2.Washing machine according to one of claims 1 to 3, characterized in that
that the at least one tub stiffening element (15) defines an outside diameter D 1 and the tub (3) defines an outside diameter D 2 , where: D 1 ≥ 0.3 · D 2 , in particular D 1 ≥ 0.5 · D 2 , in particular D 1 ≥ 0.7 · D 2 . Waschmaschine nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet,
dass der Stator (22) mit dem mindestens einen Bottich-Versteifungselement (15) verbunden ist.Washing machine according to one of claims 1 to 4, characterized in that
that the stator (22) is connected to the at least one tub stiffening element (15). Waschmaschine nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet,
dass der Bottich (3) zur Lagerung an der Antriebswelle (17) eine Nabe (16) umfasst.Washing machine according to one of claims 1 to 5, characterized in that
that the tub (3) comprises a hub (16) for mounting on the drive shaft (17). Waschmaschine nach Anspruch 6, dadurch gekennzeichnet,
dass das mindestens eine Bottich-Versteifungselement (15) mit der Nabe (16) verbunden ist.Washing machine according to claim 6, characterized in
that the at least one tub stiffening element (15) is connected to the hub (16). Waschmaschine nach Anspruch 6 oder 7, dadurch gekennzeichnet,
dass der Bottich-Grundkörper (15) aus einem Kunststoff-Material ausgebildet ist und die Nabe (16) zumindest bereichsweise von dem Kunststoff-Material umgeben ist.Washing machine according to claim 6 or 7, characterized in
that the tub base body (15) is formed from a plastic material and the hub (16) is at least partially surrounded by the plastic material. Waschmaschine nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet,
dass zwischen der Trommel (6) und dem Rotor (21) mindestens zwei Lager (19, 20) zur drehbaren Lagerung der Antriebswelle (17) relativ zu dem Bottich (3) angeordnet sind.Washing machine according to one of claims 1 to 8, characterized in that
that at least two bearings (19, 20) for rotatably mounting the drive shaft (17) relative to the tub (3) are arranged between the drum (6) and the rotor (21). Waschmaschine nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet,
dass zur drehbaren Lagerung der Antriebswelle (17) relativ zu dem Bottich (3) an zwei Seiten der Trommel (6) jeweils mindestens ein Lager (19, 20) angeordnet ist.Washing machine according to one of claims 1 to 9, characterized in that
that at least one bearing (19, 20) is arranged on each side of the drum (6) for the rotatable mounting of the drive shaft (17) relative to the tub (3). Waschmaschine nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet,
dass der Stator (22) mit der Antriebswelle (17) unverbunden ist.Washing machine according to one of claims 1 to 10, characterized in that
that the stator (22) is not connected to the drive shaft (17).
EP18207696.8A 2018-11-22 2018-11-22 Washing machine Active EP3656909B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PL18207696.8T PL3656909T3 (en) 2018-11-22 2018-11-22 Washing machine
ES18207696T ES2958714T3 (en) 2018-11-22 2018-11-22 Washing machine
EP18207696.8A EP3656909B1 (en) 2018-11-22 2018-11-22 Washing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18207696.8A EP3656909B1 (en) 2018-11-22 2018-11-22 Washing machine

Publications (3)

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EP3656909A1 true EP3656909A1 (en) 2020-05-27
EP3656909C0 EP3656909C0 (en) 2023-07-19
EP3656909B1 EP3656909B1 (en) 2023-07-19

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ID=64453315

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ES (1) ES2958714T3 (en)
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1094144A2 (en) * 1999-10-19 2001-04-25 Lg Electronics Inc. Structure of driving unit in drum type washing machine
EP1538252A1 (en) * 2003-12-01 2005-06-08 Electrolux Home Products Corporation N.V. Plastic tub for a clothes washing machine
EP2060669A1 (en) * 2007-11-05 2009-05-20 Daewoo Electronics Corporation Bearing housing and washing machine therewith
DE102007061526A1 (en) * 2007-12-20 2009-06-25 BSH Bosch und Siemens Hausgeräte GmbH Plastic suds container for a washing machine or a washer-dryer and method for producing the suds container
EP2119819B1 (en) 2008-05-14 2013-04-10 Whirlpool Corporation Washing machine with a direct drive system
EP3067457A1 (en) * 2015-03-12 2016-09-14 Whirlpool Corporation Washing machine with direct drive motor and method for its manufacturing

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1094144A2 (en) * 1999-10-19 2001-04-25 Lg Electronics Inc. Structure of driving unit in drum type washing machine
EP1538252A1 (en) * 2003-12-01 2005-06-08 Electrolux Home Products Corporation N.V. Plastic tub for a clothes washing machine
EP2060669A1 (en) * 2007-11-05 2009-05-20 Daewoo Electronics Corporation Bearing housing and washing machine therewith
DE102007061526A1 (en) * 2007-12-20 2009-06-25 BSH Bosch und Siemens Hausgeräte GmbH Plastic suds container for a washing machine or a washer-dryer and method for producing the suds container
EP2119819B1 (en) 2008-05-14 2013-04-10 Whirlpool Corporation Washing machine with a direct drive system
EP3067457A1 (en) * 2015-03-12 2016-09-14 Whirlpool Corporation Washing machine with direct drive motor and method for its manufacturing

Also Published As

Publication number Publication date
EP3656909C0 (en) 2023-07-19
ES2958714T3 (en) 2024-02-13
EP3656909B1 (en) 2023-07-19
PL3656909T3 (en) 2023-12-27

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