EP3322848A1 - Haushaltsgerät zur pflege von wäschestücken mit einer unwuchtausgleichsvorrichtung mit drehzahlabhängig magnetisch gehaltenen kugeln und verfahren zum betreiben eines derartigen haushaltsgeräts - Google Patents
Haushaltsgerät zur pflege von wäschestücken mit einer unwuchtausgleichsvorrichtung mit drehzahlabhängig magnetisch gehaltenen kugeln und verfahren zum betreiben eines derartigen haushaltsgerätsInfo
- Publication number
- EP3322848A1 EP3322848A1 EP16735893.6A EP16735893A EP3322848A1 EP 3322848 A1 EP3322848 A1 EP 3322848A1 EP 16735893 A EP16735893 A EP 16735893A EP 3322848 A1 EP3322848 A1 EP 3322848A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- magnetic
- laundry drum
- magnetically interacting
- magnetically
- elements
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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- 238000007373 indentation Methods 0.000 claims description 3
- 230000001427 coherent effect Effects 0.000 claims description 2
- 238000005406 washing Methods 0.000 description 9
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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
- D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
- D06F37/22—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a horizontal axis
- D06F37/225—Damping vibrations by displacing, supplying or ejecting a material, e.g. liquid, into or from counterbalancing pockets
Definitions
- the invention relates to a household appliance for the care of laundry items, with at least one laundry drum for receiving laundry items, and with at least one imbalance compensation device, which is arranged on the laundry drum, and which has a housing in which a plurality of compensation elements are movably contained, of which at least some are magnetically, wherein the unbalance compensation device comprises at least one rotatably coupled to the laundry drum, magnetically interacting component for magnetic interaction with the magnetic compensation elements, wherein the magnetic compensation elements and the magnetically interacting component are formed with such a magnetic holding force to each other that a release of the compensation elements of the magnetically interacting component takes place only at a speed of the laundry drum greater than a predetermined reference speed of the laundry drum.
- the invention further relates to a method for operating a household appliance.
- an annular unbalance compensating device also known as a "ball balancer" - to the laundry drum a ring-shaped, hollow housing, in which there is a balancing mass, for example in the form of several spherical compensation elements is provided.
- This balancing mass is movably mounted in the interior of the housing and tends in supercritical operation of the washing machine to move to one of the imbalance mass - with respect to a diameter of the laundry drum - opposite side, thus producing a counterweight for the imbalance mass and consequently overall balance.
- US 2014/0208809 A1 and WO 2015/050399 A1 likewise disclose washing machines with an imbalance compensation device which have movable compensating masses of metal. These balancing masses magnetically interact with two further magnetic components attached to the unbalance compensation device and generating a magnetic field.
- This unbalance compensation device is designed such that the compensating masses remain in the region of the magnetic field-generating components in the case of a rotating laundry drum until a drum speed of 200 l / min is exceeded. It is an object of the invention to provide a comparison with the prior art improved or at least alternative unbalance compensation of a laundry drum.
- An inventive household appliance for the care of laundry comprises a laundry drum for receiving the laundry items.
- the household appliance further comprises at least one unbalance compensation device, which is arranged on the laundry drum and which has a housing in which a plurality of separate compensation elements are movably contained or arranged.
- the magnetic compensation elements are at least partially formed as permanent magnets. This is particularly advantageous in that that permanently magnetic fields are provided which are provided for generating the magnetic holding force with the magnetically interacting component.
- such permanent magnets with respect to their generated magnetic fields can also be generated and provided very precisely, so that just then the desired defined holding force with the magnetically interacting component can also be specified very accurately.
- a magnetic compensation element has a permanent magnetic core which is surrounded by a sheath.
- This shell is preferably plastic.
- Such an advantageous embodiment of a magnetic compensating element allows the above-mentioned advantages of an at least partially permanent magnetic configuration and moreover has the advantage that such a compensating element can move in the housing with very reduced noise. Since the envelope, in particular made of plastic when the compensating elements abut against the inner housing walls, which delimit the hollow space of the housing, produces less noise than, for example, a metallic outer surface of such a compensating element, this additionally contributes to the overall noise reduction.
- a magnetic compensating element may be a ball formed of a plastic-bonded magnet.
- Such a configuration is characterized, for example, compared to a steel element by a lower density and thus a lower weight.
- An essential idea of the invention is to be seen in that at least some of these separate compensation elements are magnetic and the imbalance compensation device has at least one magnetically interacting component rotationally coupled to the laundry drum for magnetic interaction with the magnetic compensation elements.
- the magnetic compensation elements and the magnetically interacting element are formed individually with respect to their magnetic effect.
- magnetic compensation elements and the at least one magnetically interacting component provided in such a way that one between the magnetic compensation elements and the magnetic interacting component reaches or is formed a defined magnetic holding force to each other, wherein in the present case is understood by a magnetic compensating element is an element that has and maintains a magnetic field itself.
- the magnetic interacting component may be permanent magnetic, ferromagnetic or electromagnet, provided that it interacts with the magnetic compensating element and forms a magnetic attraction between the magnetically interacting component and the magnetic compensating element due to the formation and / or arrangement of the component (magnetic holding force).
- This defined magnetic holding force is specifically set and designed so that a release of the compensation elements of the magnetically interacting component takes place only above a predetermined reference speed of the laundry drum. It should therefore be done by the unbalance compensation device with respect to the magnetic holding between the magnetic compensation elements and the separate magnetically interacting component such that at a reference speed of the laundry drum, which is between the minimum speed and a maximum speed of the laundry drum, a release of the magnetic holding force , This ensures that the compensation elements are magnetically coupled in a speed range from the minimum speed to the reference speed of the laundry drum with the magnetically interacting component and thus quasi stationary or rotorfest be rotated.
- the balancing members may rotate in the annular housing relative to the housing and also relative to the magnetically interacting member or may rotate therein.
- this is advantageous if such a prevention of the movement of the compensation elements relative to the housing in the housing up to a speed range which is greater than the resonance range or the resonant frequency of the laundry drum movement. This then also applies in particular preferably for the usual washing speed of a laundry drum, so that the noise is at least significantly reduced.
- the frequency range lying in the region of the main natural frequencies, in particular the region of the first main natural frequency, of the unit which is swingably arranged in the housing of the domestic appliance for the care of laundry items, in which the laundry drum is rotatably mounted, is present.
- the main natural frequency of a vibratory system is also called the modal frequency.
- the reference speed is greater than a speed of the laundry drum corresponding to the resonance range of the laundry drum.
- the reference speed is especially smaller than the maximum speed of the laundry drum. Since the compensation elements then quasi while recording the resonance range and thus when passing through these frequencies of the resonance area are held evenly balanced in relation to the laundry items in the laundry drum and not move relative to the housing of the balancing device and thus have virtually the same speed like the laundry drum and the unbalance compensation device itself, the imbalances generated by the laundry items can not be increased by imbalances caused by the compensation elements.
- the compensation elements are in particular designed as balls. It is preferably provided that the magnetically interacting component is arranged on the housing. As a result, the unbalance compensation device with its housing can also be manufactured individually and independently of the laundry drum and then provided as an entire module in order to be mounted on the laundry drum. It can be provided that the magnetically interacting component is embedded in the housing, in particular completely surrounded by the housing. By such a configuration, a compact design is achieved. In addition, a high positional security between the housing and this magnetically interacting component is achieved.
- the magnetically interacting component viewed in the radial direction to the axis of rotation of the laundry drum, is arranged further inwardly than the compensation elements.
- the functionality is favored. Because interaction between the magnetic holding force and the centrifugal force in rotating laundry drum favors in such a configuration then a particularly precise and independently running solution of the compensation elements of the magnetically interacting component, since the compensation elements by the centrifugal force radially outward Shen of the magnetically interacting component practically be moved away.
- the housing is made of plastic. This makes it very easy to form and yet be stable in itself. In particular, a noise reduction is made possible by this embodiment, if then move the compensation elements in the housing relative to the housing, when the laundry drum has exceeded the reference speed and solve the compensation elements of the magnetically interacting component.
- the design of the housing made of plastic also has the additional advantage that a simplified production of this housing can be achieved with the at least one magnetically interacting component, since the magnetically interacting component, for example, can be molded onto the housing or this magnetically interacting component can be at least partially encapsulated by the plastic material of the housing.
- the magnetically interacting component is ferromagnetic. Ferromagnetic materials magnetize themselves in an external magnetic field in such a way that the magnetic flux density in their interior greatly increases compared to the outer space. Such bodies are therefore attracted to one pole of an external magnetic field.
- Such a configuration of a magnetically interacting component is a very simple structure, which therefore requires no further functional components. In addition, a simple shoring is possible.
- the magnetically interacting component is an electromagnet, which is thus electrically controllable via a corresponding control with regard to its magnetic interaction.
- the electromagnet can be controlled wirelessly and thus in particular by radio signals.
- the electromagnet permanently installed on the housing of the unbalance compensation device or the laundry drum rotate with this and can still be controlled as needed in terms of its to be generated magnetic interaction.
- the magnetically interacting component extends in the direction of rotation about the axis of rotation of the laundry drum over a length which corresponds to the length of the aligned in series in the circumferential direction compensation elements when acting magnetic holding force.
- the unbalance compensation device comprises a first, with the laundry drum rotatably coupled, magnetically interacting component for magnetic interaction with the magnetic compensation elements.
- the imbalance compensating device has a magnetically interacting component which is arranged at a distance in the direction of rotation about the axis of rotation of the laundry drum and at least second, coupled to the laundry drum for magnetic interaction with the magnetic compensating elements.
- the unbalance compensation is favored both in a speed range below the reference speed and in a speed range above the reference speed.
- the compensation elements quasi stationary or rotorfest rotate, at least two magnetically interacting components achieved a certain symmetry in the direction of rotation, so that no desired imbalance is additionally contributed by the compensation elements themselves.
- the at least two magnetically interacting components are balanced in the direction of rotation about the axis of rotation of the laundry drum, in particular by equidistant positioning to each other, are arranged.
- these compensation elements could even increase an imbalance.
- two magnetically interacting components are present, which are viewed in the direction of rotation about the axis of rotation of the laundry drum offset by practically 180 ° to each other, if each of the azimuthal means of a respective group of compensation elements, the magnetic with the respective magnetically interacting component are considered, is considered.
- a first group of compensation elements in particular magnetically interacting compensation elements, which has at least one magnetic compensation element, is held magnetically at a rotational speed of the laundry drum up to the reference rotational speed by a magnetic holding force on the first magnetically interacting component.
- a second group of compensation elements, in particular magnetically interacting compensation elements, the at least one magnetic Compensating element is magnetically held at these speeds of the laundry drum to the reference speed by a magnetic holding force to the second magnetically interacting component or magnetically coupled thereto.
- the compensation elements of the first group are equal in weight to the totality of the compensation elements of the second group with respect to their total weight.
- the entirety of the compensation elements is designed such that each compensation element is at least magnetically interacting and at least one magnetic compensation element is present.
- This can be a permanent magnet in particular then.
- a magnetic coupling with the electrically interacting compensation elements which need not necessarily be a permanent magnet, is achieved by the magnetic field of the magnetic compensation element.
- such an embodiment is provided in each of these groups.
- a holding together of the compensation elements of a group in the direction of rotation about the axis of rotation at particular speeds below the reference speed is reached without restriction.
- An undesired release of such a composite of compensation elements to each other is thereby prevented.
- the compensation elements are in particular balls.
- the balls can move in the cavity of the housing accordingly. It may be provided that in this cavity of the housing in addition also oil or water is contained, through which a noise of the relative to the housing moving compensating elements, in particular the balls, is further reduced.
- the magnetic holding force or this Garkraftschwellwert, which is coupled to the reference speed of the laundry drum is preferably designed by a field calculation so that a release of the holding force at this desired Reference speed occurs and just at this reference speed then the centrifugal force on the compensation elements is greater than this magnetic Garkraftschwellwert.
- a magnetically interacting component is arranged on the housing of the imbalance compensation device itself, for example, a write-off can be provided in this housing, in which then this magnetically interacting component is arranged.
- this magnetically interacting component is arranged.
- the only magnetically interacting compensation elements can be made of steel, for example.
- the balancing can be active through the laundry items be made in the subcritical speed range and thus in the speed range less than or equal to the reference speed. This can be achieved, in particular, by the fact that a washing distribution strategy can be taken as the basis for adherence and thus a smaller weight is sufficient for the compensating elements, which can also be compensated by small quantities of items of laundry.
- the compensating elements all as at least magnetically interacting, they remain in the azimuthal direction as a continuous composite obtained, which is particularly advantageous when braking the laundry drum.
- the compensating elements are held balanced in the laundry equipment area, when the speed is also lower than the reference speed, the same procedures can be applied there as in a machine without such Balancing device.
- the compensation elements then complicate the unbalance detection as such in this context.
- the ambient temperatures of such a household appliance can vary greatly depending on the field of application and location, it is known that if additional media such as oil or water are present in the housing, the process temperatures can also act on this medium and in this case also larger temperature fluctuations may occur.
- the viscosity of the oil can be influenced, which in turn can influence the behavior of the compensation elements, in particular with regard to noise and stability.
- the compensation elements are fixed in a lower, low speeds up to a reference speed comprehensive speed range and experience virtually the same speed as the housing of the imbalance compensation device and the laundry drum, this above-mentioned influence can therefore be significantly reduced.
- at least one further compensation element of the entirety of the compensation elements is not formed magnetically interacting.
- the total number of compensation elements is therefore formed by a number n> 0 of magnetically interacting compensation elements and a number m> 0 of non-magnetically interacting compensation elements.
- the number n is greater than the number m.
- the number m is less than or equal to 3, in particular 2.
- magnetically non-interacting compensating elements which may be balls
- the housing of the imbalance compensating device has a wall of the housing, which lies closest to the axis of rotation and thus radially inward, which delimits the cavity in which the compensating elements are located.
- a recess or indentation is formed which extends in the circumferential direction about the axis of rotation and which is designed as a recess formed towards the axis of rotation.
- the recess may also be formed in a radially oriented side wall of the housing.
- the recess is designed as a mechanical separation barrier for separating the entire group into the separate groups of compensation elements. In particular, this is done in such a way that the non-magnetic compensating elements remain stuck in the depression, thereby separating the entire group.
- this is preferably the case when the magnetically non-interacting compensating elements, lighter and / or larger than the magnetically interacting Auslgeichsetti, since then, especially at a specific speed of the laundry drum, the centrifugal forces of the magnetically non-interacting Auslgeichsetti are smaller than in the magnetically interacting Auslgeichs instituten so that a magnetically non-interacting compensating element at least partially immersed in circulation in the recess and in particular then stuck to a formed by a step end of the recess. As a result, the entire group is torn apart.
- a magnetically interacting component is arranged in the recess.
- a group of compensation elements also partially embedded therein and thus stabilizes the stationary position also in the circumferential direction about the axis of rotation.
- two such recesses are formed, in particular in the direction of rotation about the axis of rotation balanced, in particular equidistantly, to each other.
- the unbalance compensation device is designed such that the separation of the speed-dependent present total group of compensation elements takes place at a separation speed of the laundry drum.
- the separation speed may be less than the reference speed.
- the total group of compensating elements is arranged in their azimuthal position about the axis of rotation so that the imbalance generated by the laundry items in the laundry drum is compensated.
- a compensating element may instead of a ball also be a cylindrical roller or a ring.
- a material embodiment of a compensating element can be, for example, a graphite plastic.
- the invention also relates to a method for operating a domestic appliance for the care of laundry items, with at least one laundry drum for receiving laundry items.
- the household appliance is formed with at least one imbalance compensation device, which is arranged on the laundry drum.
- the imbalance compensation device is provided with a housing in which a plurality of compensation elements are movably arranged or received. It is envisaged that some compensation elements are magnetically formed and provided and the unbalance compensation device provides at least one magnetically interacting component rotationally coupled to the laundry drum for magnetic interaction with the magnetic compensation elements.
- the magnetic compensating elements and the magnetically interacting component are provided with such a magnetic holding force to each other that the compensation elements only above a predetermined reference speed of the laundry drum from the magnetically interacting component solve.
- the compensation elements remain magnetically coupled to the magnetically interacting component and thus also accompanied by movement. If the laundry drum is rotated at a speed that is greater than the reference speed, these compensation elements automatically detach from the magnetically interacting component and then, depending on the imbalance generated by the laundry items in the laundry drum, relative to the magnetically interacting component and thus move to the housing in the housing.
- the magnetic holding force is advantageously effected by the fact that the magnetic compensation elements are at least partially formed as permanent magnets.
- a magnetic compensating element is formed with a permanent magnetic core, which is surrounded by a shell, in particular made of plastic.
- the unbalance compensating device is provided with a first, magnetically interacting member rotatably coupled to the laundry drum for magnetic interaction with at least one magnetic compensating element, and with a at least second, with the laundry drum rotatably coupled, magnetically interacting component spaced apart in the direction of rotation about the axis of rotation of the laundry drum provided for magnetic interaction with at least one magnetic compensating element.
- a first group of magnetically interacting compensation elements having at least one magnetic compensating element is magnetically held at a rotational speed of the laundry drum less than or equal to the reference speed by a magnetic holding force on the first magnetically interacting component, and at this speed of the laundry drum less than or equal to the reference speed a second group of magnetically interacting compensation elements, which is separated from the first group in the direction of rotation about the axis of rotation of the laundry drum and has at least one magnetic compensating element, is magnetically held on the second magnetically interacting component by a magnetic holding force.
- the separation of the entire group is again carried out in the separate groups, in particular at a separation speed of the laundry drum.
- the separation can be done in addition to or instead depending on the weight and / or the size of the non-magnetically interacting compensation element. This is among other things for the imbalance compensation of small laundry imbalances at a speed greater than the reference speed of importance.
- a magnetically non-interacting compensating element is made lighter and / or larger, that is to say in particular of a larger diameter, than a magnetically interacting compensating element.
- the separation of the entire group in the separate groups of compensation elements can also be supported by at least one change of direction of the laundry drum. This means that the laundry drum rotates in the presence of the entire group in a rotational direction about the axis of rotation and then the speed is reduced in order to achieve a separation of the entire group.
- the separation can then begin individually at the separation speed and / or depending on the weight and / or the size of the magnetically non-interacting compensation elements. It can be carried out for the exact production of the original separate groups and thus the original respective number of compensation elements of the groups then at least a single change in the direction of rotation of the laundry drum.
- the separation is completed in particular when the groups with their respective original Number of Auslgeichsettin present and are each magnetically held with a magnetically interacting component again.
- the two groups are released at a speed of the laundry drum greater than the reference speed of the magnetically interactive components and combine in the direction of rotation about the axis of rotation considered to a coherent overall group.
- the compensation elements are provided with at least one further, non-magnetically interacting compensating element, through which at the specific separation speed of the laundry drum and / or depending on the weight and / or the shape of the at least one further non-magnetically interacting compensating element, the entire group back into the separated into two separate groups.
- Advantageous embodiments of the household appliance according to the invention are to be regarded as advantageous embodiments of the method, to allow the respective representational features alone or in operative connection with the method steps.
- an imbalance compensation device is understood in the present case a device which is designed to compensate and thus to prevent imbalances of the laundry drum.
- the unbalance compensation device can have a compensating mass arranged movably in the housing, for example in the form of a plurality of spherical elements.
- Such an imbalance compensation device can also be referred to as a "ball balancer.”
- the at least one imbalance compensation device is configured in particular as a ring and has the housing, which is designed in particular as a ring.
- top, bottom, front, “rear”, “horizontal”, “vertical”, “depth direction”, “width direction”, “height direction”, etc. are the intended use and intended arrangement of the device and at a given before the device and looking in the direction of the device given positions and orientations.
- FIG. 1 shows a schematic front view of an exemplary embodiment of a household appliance according to the invention for the care of laundry items; a schematic sectional view through a portion of an arrangement with a laundry drum and imbalance compensation devices according to an embodiment of the invention; a front view of an embodiment of an imbalance compensation device of the household appliance of Figure 1 and 2 in an operating condition with a speed of the laundry drum less than or equal to a reference speed. a front view of the embodiment of the imbalance compensation device of the household appliance of Figure 3 in an operating condition with a speed of the laundry drum greater than the reference speed.
- Fig. 5 is an exemplary diagram in which a speed curve of
- Fig. 6 shows another embodiment of an imbalance compensation device.
- FIG. 1 is a simplified front view of a household appliance 1 for the care of laundry, which may be for example a washing machine or a washer-dryer, shown.
- the household appliance 1 comprises a housing 2, in which a laundry drum 3 is arranged oscillatingly relative to the housing 2 and is rotatably mounted.
- a longitudinal axis or axis of rotation A (FIG. 2) of the laundry drum 3 is oriented in this embodiment in the illustration in FIG. 1 perpendicular to the plane of the figure.
- the longitudinal or rotational axis can also be arranged inclined with respect to an axis lying perpendicular to the plane of the figures.
- the axis of rotation may be a vertical axis.
- the household appliance 1 further comprises a tub 4, which is also arranged in the housing 2 and surrounds the laundry drum 3.
- the oscillating arrangement of the laundry drum is achieved in this embodiment by the attachment of the tub 4 to the housing 2 by means not shown springs and dampers.
- Other arrangements, such as a laundry drum arranged oscillating in the tub, are possible.
- the laundry drum 3 comprises a hollow cylindrical shell and a rear end wall and is also designed to be open at the front, so that here a feed opening is provided, via which laundry items can be introduced into an interior 5 of the laundry drum 3.
- the loading opening can be closed by a door 6, which is arranged movably on the housing 2.
- FIG. 2 shows a vertical sectional illustration and thus a representation in the sectional plane relating to the yz plane. It is the laundry drum 3 shown with the hollow cylindrical shell 7. The charging port 8 is also shown.
- the laundry drum 3 has, adjacent to a rear wall or rear end wall 9, a carrier star 10 which is fixedly connected to the laundry drum 3.
- the support star 10 is rotatably connected to a shaft 1 1, wherein the shaft 1 1 via a not shown drive motor is driven, so that the rotation of the laundry drum 3 is effected about the axis of rotation A.
- the household appliance 1 in the embodiment shown comprises two unbalance compensation devices 13 and 14. As can also be seen, a plurality of drivers are arranged on the inner side 12, wherein in FIG. 2 only one driver 15 can be seen.
- the front unbalance compensation device 13 is viewed in the direction of the axis A in a front region 16 of the laundry drum 3 and in particular of the jacket 7, whereas the second unbalance compensation device 14 is arranged in a rear region 17.
- the first unbalance compensation device 13 is formed as a circumferential closed ring, which is rotationally symmetrical about the axis A oriented.
- the first unbalance compensating device 13 comprises a ring-shaped housing 18 in this respect, which in the sectional view in FIG. 2 has an identically quadrangular cross-section, which however can also be otherwise, for example D-shaped.
- This housing 18 has a cavity 19 in which one or more compensation elements 20 are arranged to be movable relative to the housing 18.
- a compensation element 20 may be a ball. It may also be arranged in the cavity 19 in addition to or instead of a liquid medium, such as oil or water.
- the second unbalance compensation device 14 is also formed, which also has a correspondingly formed housing 21, a cavity 22 inwardly and one, in particular preferably a plurality, relative to the housing 21 in the cavity 22 movable separate compensating elements 23 which are balls.
- the imbalance compensation devices 13 and 14 are each inserted into circumferential receptacles 24.
- Fig. 3 is a simplified front view of a representation of components of the imbalance compensation device 13 is shown.
- the unbalance compensation device 14 is preferably constructed the same. It is here to recognize the housing 18, in the cavity 19 a plurality of compensation elements 20 is arranged.
- the compensating elements 20, of which only a few are provided with the reference number for the sake of clarity, are all at least magnetically interacting. It is provided in the embodiment that at least some of the compensation elements 20 are magnetic and thus are a permanent magnet, in particular permanent magnetic, are at least partially formed permanent magnetic.
- a situation is shown in which the laundry drum 3 rotates at a speed about the axis A, which is less than or equal to a reference speed.
- the reference rotational speed is greater than a rotational speed corresponding to the resonance range of the laundry drum 3 and is smaller than a maximum speed of the laundry drum 3.
- a first group 25 of compensation elements 20 in magnetic interaction with a thereto separate first magnetically interacting member 26 is provided in the embodiment that a first group 25 of compensation elements 20 in magnetic interaction with a thereto separate first magnetically interacting member 26 is.
- the first magnetically interacting component 26 may, for example, be ferromagnetic and extend in the direction of rotation about the axis A.
- the shape is adapted to the housing 18. As can be seen in FIG.
- the magnetically interacting component 26 extends in the azimuthal direction and thus in the direction of rotation about the axis A over a length corresponding to the length of a series arrangement of the compensating elements 20 of the series arranged in this circumferential direction
- first group 25 comprises at least one magnetically interacting compensation element 27.
- This can be completely a permanent magnet.
- this magnetic compensation element 27 has a core which is formed by a permanent magnet, said core being completely surrounded by a sheath, in particular made of plastic.
- this is preferably arranged in the middle of the row of compensating elements 20 of this first group 25.
- the magnetic fields or the magnetic force of this magnetic compensating element 27 can also act on the then only magnetically interacting other compensating elements 20 in the first group 25 and maintain the holding composite of these compensating elements 20 of the first group 25.
- the magnetic interaction with the component 26 is ensured by this configuration.
- the first group 25 has at least two magnetic compensating elements 27, which are then preferably arranged at the opposite ends of the alignment of these compensating elements 20 of the first group 25 viewed in the azimuthal direction.
- the same can be provided in a second group 28 of compensating elements 20, which also has at least one magnetic compensating element 29 by way of example.
- the second group 28 is assigned a second magnetically interacting component 30, which is separate from the first magnetically interacting component 26, in order to form a corresponding magnetic holding force here as well.
- the two groups 25 and 28 and thus also the magnetically interacting components 26 and 30 are arranged in the circumferential direction about the axis A equidistant to each other and thus formed quasi opposite, which means with respect to the respective azimuthal center of the groups 25 and 28 that they are offset by 180 ° to each other.
- the magnetically interacting components 26 and 30 viewed in the radial direction to the axis A are located radially further inward than the compensation elements 20th
- the respective magnetic holding force between a magnetic component 26 or 30 and the compensating elements 20 of the groups 25 and 28 held thereon in a magnetic interaction is predetermined, whereby the respective components are designed to be defined, which can be achieved with respect to size and / or materials ,
- the only magnetically interacting compensating elements 20 may be made of steel, for example, and thus do not constitute permanent magnets. Due to the inclusion of the at least partially permanent magnetic compensating elements 27 and 29, however, these further magnetically interacting compensating elements 20 are each attracted, so that the composite is held together and the magnetic interaction with the component 26 or 30 occurs. The stationary coupling between the group 25 and the component 26 as well as between the group 28 and the component 30 is maintained as long as defined until the laundry drum 3 reaches a speed greater than the reference speed.
- the respective magnetic holding force between the group 25 and the component 26 and between the group 28 and the component 30 is defined defined and formed a quasi-such Garkraftschwellwert that when the reference speed is exceeded, the centrifugal forces on the compensation elements 20 are greater than the respective predetermined magnetic Holding force, so then a detachment of the compensation elements 20 of the component 26 on the one hand and the component 30 on the other hand takes place.
- the compensation elements 20 can move relative to the components 26 and 30 in the cavity 19 and thus also move relative to the housing 18.
- FIG. 5 is a simplified diagram is shown, in which the speed U of the laundry drum 3 is shown as a function of time t. It is merely an example and not to be understood comprehensive speed curve simplified.
- the separate groups 25 and 28 are disconnected, as shown more simply in the left image of the imbalance compensation device 13 shown below the diagram in FIG.
- the groups 25 and 28 each have an equal number of magnetically interacting compensation elements 27 and 29 here.
- each group includes 25 and 28 also, in the embodiment, in each case a magnetically non-interacting compensation element 32 and 33, which are formed in the embodiment as balls. If, at a time t1, a rotational speed of the laundry drum 3 is reached which is greater than a reference speed U R , the compensating elements 27 and 29 detach from the magnetically interacting components 26 and 30 due to the centrifugal forces and accumulate to form an overall group 34, like this is shown in the middle image of the imbalance compensation device 13 in Fig. 5. In this case, the total group 34 is aligned in its azimuthal position about the axis of rotation A so that the imbalance generated by the accumulation of the laundry items 31 is compensated. It can also result in an arrangement of several groups of compensation elements, in which a resulting total imbalance of the compensation elements adjusts, which corresponds to the formed laundry imbalance and counteracts it, ie the laundry imbalance is compensated.
- the speed is then reduced in a further phase of the operation, in particular when the spinning process is ended. It can be provided that at a separation speed U T and / or depending on the weight and / or the size of the magnetically non-interacting compensation elements 32 and 33 the Separating the entire group 34 into the separate groups 25 and 28 takes place, in particular at least begins.
- the group 25 and 28 then form again as in the original state according to the left image in Fig. 5 and are then again magnetically held stationary with the magnetically interacting components 26 and 30.
- this final state which corresponds to the initial state, it is also possible to carry out an at least one change in the direction of rotation of the laundry drum 3.
- the housing 18 may have a radially inner wall 35, which is a bottom wall of the housing 18, the regions in the circumferential direction about the axis of rotation A indentations or depressions 36 and 37 has.
- the recesses 36 and 37 may also be formed in a radially oriented side wall of the housing 18.
- the recesses 36 and 37 extend in the direction of rotation about the axis of rotation A, in particular over a length corresponding to the length of a group 25 or 28, when all compensating elements of such a group 25 and 28 are lined up.
- the magnetically interacting member 26 is disposed at a bottom of the recess 36 and the magnetically interacting member 30 at a bottom of the recess 37.
- the recesses 36 and 37 each have stepped transitions 38, 39, 40, 41 to the non-recessed portion of the wall 35.
- separating elements are formed, which in interaction with the magnetically non-interacting compensation elements 32 and 33, the separation of the total group 34 in the groups 25 and 28 at least favors. Because in which the magnetically non-interacting compensation elements 32 and 33 are preferably lighter and / or larger in diameter than the other, in particular magnetically interacting compensation elements of the entire group 34, they experience a lower centrifugal force than these other compensation elements.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
- Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL16735893T PL3322848T3 (pl) | 2015-07-16 | 2016-07-07 | Urządzenie gospodarstwa domowego do pielęgnacji prania z urządzeniem wyrównującym niewyważenie z kulkami utrzymywanymi magnetycznie zależnie od prędkości obrotowej i sposób użytkowania tego rodzaju urządzenia gospodarstwa domowego |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015213347.8A DE102015213347A1 (de) | 2015-07-16 | 2015-07-16 | Haushaltsgerät zur Pflege von Wäschestücken mit einer Unwuchtausgleichsvorrichtung mit drehzahlabhängig magnetisch gehaltenen Kugeln und Verfahren zum Betreiben eines derartigen Haushaltsgeräts |
PCT/EP2016/066130 WO2017009170A1 (de) | 2015-07-16 | 2016-07-07 | Haushaltsgerät zur pflege von wäschestücken mit einer unwuchtausgleichsvorrichtung mit drehzahlabhängig magnetisch gehaltenen kugeln und verfahren zum betreiben eines derartigen haushaltsgeräts |
Publications (2)
Publication Number | Publication Date |
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EP3322848A1 true EP3322848A1 (de) | 2018-05-23 |
EP3322848B1 EP3322848B1 (de) | 2019-04-17 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP16735893.6A Active EP3322848B1 (de) | 2015-07-16 | 2016-07-07 | Haushaltsgerät zur pflege von wäschestücken mit einer unwuchtausgleichsvorrichtung mit drehzahlabhängig magnetisch gehaltenen kugeln und verfahren zum betreiben eines derartigen haushaltsgeräts |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP3322848B1 (de) |
CN (1) | CN107849786B (de) |
DE (1) | DE102015213347A1 (de) |
PL (1) | PL3322848T3 (de) |
RU (1) | RU2672721C1 (de) |
TR (1) | TR201906985T4 (de) |
WO (1) | WO2017009170A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112281409A (zh) * | 2019-07-22 | 2021-01-29 | 青岛海尔洗衣机有限公司 | 滚筒洗衣机及其控制方法 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107366131B (zh) * | 2016-05-12 | 2020-10-16 | 博西华电器(江苏)有限公司 | 洗衣机及用于洗衣机的平衡环 |
JP6624689B2 (ja) * | 2017-03-10 | 2019-12-25 | 株式会社フォーカルワークス | 洗濯機 |
EP3536842A1 (de) | 2018-03-09 | 2019-09-11 | Vestel Elektronik Sanayi ve Ticaret A.S. | Auswuchtvorrichtung einer waschmaschine |
DE102019212834A1 (de) * | 2019-08-27 | 2021-03-04 | BSH Hausgeräte GmbH | Vorrichtung zum Ausgleichen einer Unwucht einer beladenen Wäschetrommel |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3832020A (en) * | 1972-08-31 | 1974-08-27 | Heim Universal Corp | Anti-friction ball bearing assembly |
KR100960068B1 (ko) | 2006-11-10 | 2010-05-31 | 삼성전자주식회사 | 볼밸런서 및 이를 구비한 세탁기 |
DE102010028492A1 (de) * | 2010-05-03 | 2011-11-03 | BSH Bosch und Siemens Hausgeräte GmbH | Hausgerät zur Pflege von Wäschestücken mit einer Trommel zur Aufnahme der Wäschestücke |
DE102010030163A1 (de) * | 2010-06-16 | 2011-12-22 | BSH Bosch und Siemens Hausgeräte GmbH | Haushaltsgerät, insbesondere Waschmaschine mit einem unbeweglichen Laugenbehälter |
KR101674526B1 (ko) * | 2010-10-06 | 2016-11-10 | 삼성전자주식회사 | 세탁기와 그 제어방법 |
KR102044439B1 (ko) * | 2013-01-25 | 2019-11-13 | 삼성전자주식회사 | 밸런서 및 이를 구비하는 세탁기 |
KR101992143B1 (ko) * | 2013-01-25 | 2019-06-26 | 삼성전자주식회사 | 밸런서 및 이를 구비하는 세탁기 |
DE102013213208A1 (de) * | 2013-07-05 | 2015-01-08 | BSH Bosch und Siemens Hausgeräte GmbH | Haushaltskältegerät mit einem Lagerbereich und einer Befeuchtungsvorrichtung zum Einstellen einer Umgebungsfeuchte in dem Lagerbereich |
WO2015050399A1 (en) * | 2013-10-04 | 2015-04-09 | Samsung Electronics Co., Ltd. | Balancer of washing machine |
-
2015
- 2015-07-16 DE DE102015213347.8A patent/DE102015213347A1/de not_active Withdrawn
-
2016
- 2016-07-07 WO PCT/EP2016/066130 patent/WO2017009170A1/de active Application Filing
- 2016-07-07 TR TR2019/06985T patent/TR201906985T4/tr unknown
- 2016-07-07 RU RU2018101294A patent/RU2672721C1/ru active
- 2016-07-07 EP EP16735893.6A patent/EP3322848B1/de active Active
- 2016-07-07 PL PL16735893T patent/PL3322848T3/pl unknown
- 2016-07-07 CN CN201680041976.0A patent/CN107849786B/zh active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112281409A (zh) * | 2019-07-22 | 2021-01-29 | 青岛海尔洗衣机有限公司 | 滚筒洗衣机及其控制方法 |
Also Published As
Publication number | Publication date |
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RU2672721C1 (ru) | 2018-11-19 |
TR201906985T4 (tr) | 2019-06-21 |
CN107849786B (zh) | 2020-11-06 |
EP3322848B1 (de) | 2019-04-17 |
PL3322848T3 (pl) | 2019-11-29 |
CN107849786A (zh) | 2018-03-27 |
DE102015213347A1 (de) | 2017-01-19 |
WO2017009170A1 (de) | 2017-01-19 |
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