EP3656909A1 - Lave-linge - Google Patents

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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)
English (en)
Other versions
EP3656909C0 (fr
EP3656909B1 (fr
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 ES18207696T priority Critical patent/ES2958714T3/es
Priority to EP18207696.8A priority patent/EP3656909B1/fr
Priority to PL18207696.8T priority patent/PL3656909T3/pl
Publication of EP3656909A1 publication Critical patent/EP3656909A1/fr
Application granted granted Critical
Publication of EP3656909C0 publication Critical patent/EP3656909C0/fr
Publication of EP3656909B1 publication Critical patent/EP3656909B1/fr
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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
EP18207696.8A 2018-11-22 2018-11-22 Lave-linge Active EP3656909B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ES18207696T ES2958714T3 (es) 2018-11-22 2018-11-22 Lavadora
EP18207696.8A EP3656909B1 (fr) 2018-11-22 2018-11-22 Lave-linge
PL18207696.8T PL3656909T3 (pl) 2018-11-22 2018-11-22 Pralka

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18207696.8A EP3656909B1 (fr) 2018-11-22 2018-11-22 Lave-linge

Publications (3)

Publication Number Publication Date
EP3656909A1 true EP3656909A1 (fr) 2020-05-27
EP3656909C0 EP3656909C0 (fr) 2023-07-19
EP3656909B1 EP3656909B1 (fr) 2023-07-19

Family

ID=64453315

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18207696.8A Active EP3656909B1 (fr) 2018-11-22 2018-11-22 Lave-linge

Country Status (3)

Country Link
EP (1) EP3656909B1 (fr)
ES (1) ES2958714T3 (fr)
PL (1) PL3656909T3 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1094144A2 (fr) * 1999-10-19 2001-04-25 Lg Electronics Inc. Structure de l'unité d'entrainement dans une machine à laver à tambour
EP1538252A1 (fr) * 2003-12-01 2005-06-08 Electrolux Home Products Corporation N.V. Cuve en matière plastique pour machine à laver le linge
EP2060669A1 (fr) * 2007-11-05 2009-05-20 Daewoo Electronics Corporation Logement de roulement et machine à laver correspondante
DE102007061526A1 (de) * 2007-12-20 2009-06-25 BSH Bosch und Siemens Hausgeräte GmbH Kunststoff-Laugenbehälter für eine Waschmaschine oder einen Waschtrockner und Verfahren zur Herstellung des Laugenbehälters
EP2119819B1 (fr) 2008-05-14 2013-04-10 Whirlpool Corporation Machine à laver avec système d'entraînemet direct
EP3067457A1 (fr) * 2015-03-12 2016-09-14 Whirlpool Corporation Machine à laver avec moteur à entraînement direct et procédé de fabrication de celle-ci

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1094144A2 (fr) * 1999-10-19 2001-04-25 Lg Electronics Inc. Structure de l'unité d'entrainement dans une machine à laver à tambour
EP1538252A1 (fr) * 2003-12-01 2005-06-08 Electrolux Home Products Corporation N.V. Cuve en matière plastique pour machine à laver le linge
EP2060669A1 (fr) * 2007-11-05 2009-05-20 Daewoo Electronics Corporation Logement de roulement et machine à laver correspondante
DE102007061526A1 (de) * 2007-12-20 2009-06-25 BSH Bosch und Siemens Hausgeräte GmbH Kunststoff-Laugenbehälter für eine Waschmaschine oder einen Waschtrockner und Verfahren zur Herstellung des Laugenbehälters
EP2119819B1 (fr) 2008-05-14 2013-04-10 Whirlpool Corporation Machine à laver avec système d'entraînemet direct
EP3067457A1 (fr) * 2015-03-12 2016-09-14 Whirlpool Corporation Machine à laver avec moteur à entraînement direct et procédé de fabrication de celle-ci

Also Published As

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

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