EP4061992A1 - Lave-linge doté de meilleures performances de lavage - Google Patents

Lave-linge doté de meilleures performances de lavage

Info

Publication number
EP4061992A1
EP4061992A1 EP19805659.0A EP19805659A EP4061992A1 EP 4061992 A1 EP4061992 A1 EP 4061992A1 EP 19805659 A EP19805659 A EP 19805659A EP 4061992 A1 EP4061992 A1 EP 4061992A1
Authority
EP
European Patent Office
Prior art keywords
washing machine
drum
laundry washing
liquid
wireless power
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
EP19805659.0A
Other languages
German (de)
English (en)
Other versions
EP4061992B1 (fr
Inventor
Vittorio GALLOTTO
Andrea Contarini
Maurizio Del Pos
Marco SPADA
Angelo LE PERA
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.)
Electrolux Appliances AB
Original Assignee
Electrolux Appliances AB
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 Electrolux Appliances AB filed Critical Electrolux Appliances AB
Publication of EP4061992A1 publication Critical patent/EP4061992A1/fr
Application granted granted Critical
Publication of EP4061992B1 publication Critical patent/EP4061992B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/02—Devices for adding soap or other washing agents
    • D06F39/024—Devices for adding soap or other washing agents mounted on the agitator or the rotating drum; Free body dispensers
    • 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
    • D06F37/02—Rotary receptacles, e.g. drums
    • D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
    • D06F37/06—Ribs, lifters, or rubbing means forming part of the receptacle
    • D06F37/065—Ribs, lifters, or rubbing means forming part of the receptacle ribs or lifters having means for circulating the washing liquid
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/42—Detergent or additive supply
    • 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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/37—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of metering of detergents or additives

Definitions

  • the present invention refers to a laundry washing machine with improved washing performances.
  • washing machines both “simple” washing machines (i.e. washing machines which can only wash and rinse the laundry) and washing-drying machines (or “washer-driers", i.e. washing machines which can also dry the laundry), usually comprise an external casing, typically called cabinet, provided with a loading/unloading door which allows the access to a washing tub containing a rotary perforated drum in which the laundry to be washed (or also dried, in case of a washer- drier) can be loaded.
  • an external casing typically called cabinet
  • a loading/unloading door which allows the access to a washing tub containing a rotary perforated drum in which the laundry to be washed (or also dried, in case of a washer- drier) can be loaded.
  • the drum is provided with one or more lifters (called also elevators, or ribs, or diverter), adapted to improve the stirring of the laundry during the rotation of the drum;
  • the lifters are substantially prismatic elements protruding from the inner face of the lateral surface of the drum and positioned with their longitudinal axis substantially parallel to the rotation axis of the drum.
  • Water and washing and/or rinsing additives i.e. detergents, softeners, bleaching, etc.
  • a liquid supply circuit connectable to water delivery mains present outside the machine; after the washing or rinsing phases, washing/rinsing liquid (i.e. clean water, or a solution of water and washing and/or rinsing additive(s)) is discharged from the tub by a discharge circuit.
  • the liquid supply circuit of known laundry washing machines typically comprises an additive housing, associated to the cabinet, containing a removable drawer provided with a plurality of compartments adapted to be filled with washing and/or rinsing additives; water, coming from water mains to which the liquid supply circuit is connected, is selectively taken into one or more of the compartments of the drawer (e.g. by controlling suitable electromagnetic inlet valve (s)), so as to contact and mix with the additive (s) contained therein.
  • washing/rinsing solution i.e. water mixed with washing and/or rinsing additive (s)
  • the washing/rinsing solution is then taken to the washing tub by a conduit fluidly connecting the additive housing and the washing tub.
  • the conduit takes the washing/rinsing liquid to the bottom of the tub, where it is collected until reaching a certain level at which it can enter the drum via the perforated surface of the latter.
  • the conduit sprays the washing/rinsing liquid against the perforated lateral surface of the drum, from which the washing/rinsing solution enters the latter.
  • the outlet of the conduit is positioned close to the loading/unloading opening of the tub, and it is arranged in such a way to spray the washing/rinsing liquid directly within the loading/unloading opening of the drum, so as to directly reach the laundry contained therein.
  • Some known washing machines are also provided with a recirculation circuit adapted to draw the washing/rinsing liquid from the bottom of the tub and to re-admit this re circulated washing/rinsing liquid into an upper region of the tub.
  • the washing/rinsing liquid enters the drum through its perforated walls
  • the latter obstruct the path of the washing/rinsing liquid towards the laundry contained in the drum, and there is the risk that not all the laundry is effectively wetted by the liquid, in particular the part of the laundry positioned in the central part of the drum.
  • the part of the laundry positioned close to the loading/unloading opening obstructs the path of the washing/rinsing liquid towards the part of the laundry positioned in the inner and in the rear part of the drum.
  • the aim of the present invention is therefore to provide a laundry washing machine which does not present above mentioned problems, and which allows treating all or at least most of the laundry contained in the drum with a washing and/or rinsing liquid in an effective way.
  • a further object of the present invention is obtaining a laundry washing machine which is reliable, and which is few subjected to wear and tear.
  • Applicant has found that, by providing a laundry washing machine comprising an electric liquid supplying device mounted in/on its drum and configured for dispensing a liquid in an inner region of the drum, it is possible supplying such a liquid exactly where the laundry is positioned, reducing the risk that some of the laundry is not effectively wetted by the liquid.
  • the electric liquid supplying device is electrically powered by a wireless power receiver unit mounted in/on the drum, and to which the electric power is wireless transmitted by a power transmitter unit associated to the cabinet and/or to the tub, separately from the drum; in this way it is possible avoiding sliding contacts (and the related wear and tear problems) for transmitting electric power between a not-rotating part of the washing machine (the cabinet or the washing tub) and the drum, and therefore the reliability of the washing machine is improved.
  • a laundry washing machine comprising: a cabinet, a washing tub housed inside the cabinet, a drum rotatably housed inside the tub, an electric liquid supplying device mounted in/on the drum and configured for dispensing a liquid in an inner region of the drum.
  • the electric liquid supplying device is configured for drawing a liquid from a region of the tub external to the drum, and dispensing this liquid in an inner region of the drum.
  • the electric liquid supplying device is configured for drawing a liquid from an inner region of the drum and dispensing this liquid in a different inner region of the drum.
  • the laundry washing machine comprises a liquid reservoir mounted in/on the drum, and the electric liquid supplying device is configured for drawing a liquid from the liquid reservoir and dispensing this liquid in an inner region of the drum.
  • the electric liquid supplying device is or comprises a pump.
  • the laundry washing machine comprises at least one lifter, hollow, protruding from the lateral internal surface of the drum, towards the internal of the latter.
  • the electric liquid supplying device is at least partially housed within the lifter.
  • the electric liquid supplying device is totally housed within the lifter.
  • the pump is housed within the lifter.
  • a discharge side of the pump is connected to a discharge duct configured for pumping a liquid out of the lifter.
  • a discharge side of the pump is connected to a discharge duct configured for pumping a liquid within the lifter, and the lifter comprises one or more perforated outlet wall by which a liquid can exit the lifter and go to an inner region of the drum.
  • the liquid reservoir is housed within the lifter.
  • the liquid reservoir coincides with the lifter or with a portion thereof.
  • the laundry washing machine comprises a control unit managing operations of the laundry washing machine, and the electric liquid supplying device is controlled by the control unit, to which it is operatively connected.
  • the electric liquid supplying device is operatively connected to the control unit by a data transmission system.
  • the electric liquid supplying device is controlled by a dedicated control system mounted in/on the drum.
  • the dedicated control system is operatively connected to and controlled by the control unit.
  • a suction side of the pump is fluidly connected by a suction pipe to the internal of the tub and control unit is configured for activating the pump when the angular position of the drum is such that the suction pipe is in contact with liquid contained in the tub.
  • a suction side of the pump is fluidly connected by a suction pipe to the internal of the tub and the dedicated control system is configured for activating the pump when the angular position of the drum is such that the suction pipe is in contact with liquid contained in the tub.
  • the liquid reservoir is manually and/or automatic refillable.
  • the liquid is water or water mixed with a washing and/or rinsing agent.
  • the laundry washing machine comprises a wireless power transmitter unit associated to the cabinet and/or to the washing tub separately from the drum, and arranged for wireless transmitting electric power to a wireless power receiver unit mounted in/on the drum, wherein the wireless power receiver unit is configured for supplying electric power to the electric additive treating device.
  • the wireless power receiver unit is arranged for supplying electric power to the electric apparatus.
  • the electric additive treating device is wired connected to the wireless power receiver unit.
  • the wireless power transmitter unit is electrically connected to an electrical system of the laundry washing machine.
  • the wireless power transmitter unit is wired electrically connected to the electrical system of the laundry washing machine.
  • the wireless power transmitter unit is mounted in/on the washing tub.
  • the power transmitter unit and the power receiver unit are positioned, one opposite to the other, fixed respectively to the washing tub and to the drum, parallel one another, and to a plane perpendicular to the rotation axis of the drum.
  • the wireless power transmitter unit comprises a transmission coil generating a magnetic field and the wireless power receiver unit comprises a reception coil generating power from the magnetic field generated by the transmission coil and supplying the generated power to the electric additive treating device.
  • the transmission coil and the reception coil are aligned, centered and parallel one another, and to a plane perpendicular to the rotation axis of the drum.
  • the transmission coil and the reception coil have a common radius dimension approximately equal to the drum external radius and are distanced in axial direction by a distance lower than their radius.
  • the transmission coil and the reception coil are distanced in axial direction by a distance lower than 10 cm. More preferably, the transmission coil and the reception coil are distanced in axial direction by a distance lower than 5 cm.
  • the wireless power receiver unit comprises a receiver magnetic shielding member
  • the wireless power transmitter unit comprises a transmission magnetic shielding member
  • the receiver magnetic shielding member is positioned between the reception coil and the drum side, and the transmission magnetic shielding member is positioned between the transmission coil and the washing tub side.
  • the receiver magnetic shielding member is positioned on the opposite side of the reception coil with respect to the wireless power transmitter unit.
  • the transmission magnetic shielding member is positioned on the opposite side of the transmission coil with respect to the wireless power receiver unit.
  • a method for operating a laundry washing machine comprising: a cabinet, a washing tub housed inside the cabinet, a drum rotatably housed inside the tub, an electric liquid supplying device mounted in/on the drum and configured for dispensing a liquid in an inner region of the drum, wherein the method comprises:
  • the laundry washing machine comprises a wireless power transmitter unit associated to the cabinet and/or to the washing tub separately from the drum, and arranged for wireless transmitting electric power to a wireless power receiver unit mounted in/on the drum, and the wireless power receiver unit is configured for supplying electric power to the electric additive treating device
  • the method comprises:
  • Fig 1 is a sectional view of a possible embodiment of a laundry washing machine according to the invention.
  • Fig. 2 is a sectional view of a detail of a possible embodiment of a wireless transmitter power unit and a wireless receiver power unit of a laundry washing machine according to the invention.
  • Fig. 3 is a sectional view showing more in detail an advantageous embodiment of the fixation of the wireless power transmitter unit to the tub and the wireless power receiver unit to the drum of a laundry washing machine according to the invention.
  • Fig. 4 is a block diagram of a first embodiment of a power supply circuit of the electric additive treating device(s) of a laundry washing machine according to the invention.
  • Fig. 5 is block diagram of another embodiment of a power supply circuit of the electric additive treating device(s) of a laundry washing machine according to the invention.
  • Fig. 6 is block diagram of another embodiment of a power supply circuit of an electric additive treating device of a laundry washing machine according to the invention, including an interface unit.
  • Fig. 7 is a schematic view of a first embodiment of an electric liquid supplying device of a laundry washing machine according to the invention.
  • Fig. 8 is a schematic view of a second embodiment of an electric liquid supplying device of a laundry washing machine according to the invention.
  • Fig. 9 is a schematic view of a further embodiment of an electric liquid supplying device of a laundry washing machine according to the invention.
  • Fig. 10 is a schematic view of a further embodiment of an electric liquid supplying device of a laundry washing machine according to the invention.
  • FIG. 1 An advantageous embodiment of a laundry washing machine 10 according to the invention is schematically illustrated in Fig. 1; in this advantageous embodiment, the washing machines is a "simple" washing machine (i.e. a washing machine which can only wash and rinse the laundry); anyway, it is clear that the invention can be applied, without any substantial modification, also to washer-driers.
  • a "simple" washing machine i.e. a washing machine which can only wash and rinse the laundry
  • the laundry washing machine 10 illustrated in Fig. 1 is of the front-loading type; it is however clear that the invention can be applied, without any substantial modification, also to top-loading washing machines.
  • the laundry washing machine 10 advantageously comprises a cabinet 20 in which frontal wall 20a an access opening is preferably obtained, preferably connected to the cabinet 20 via a flexible bellows, not illustrated.
  • a loading/unloading door 4 allows the access to a washing tub 30, advantageously suspended to the cabinet 20 through springs 40 and dampers 80.
  • the washing tub 30 advantageously contains a rotary perforated drum 50 in which the laundry to be washed, not illustrated, can be loaded.
  • the drum 50 is preferably provided with a rotating shaft 6, protruding from its rear wall 50b, and supported by one or more bearings, not illustrated, provided in the rear wall 30b of the tub 30; the shaft 6, and therefore the drum 50, is preferably rotated by an electric motor 5, preferably, but not necessarily, fixed directly to the rear wall 30b of the tub 30, or connected to the shaft 6 by a belt-pulley assembly, not illustrated.
  • the laundry washing machine 10 comprises at least one lifter 500 (called also elevator, or rib, or diverter), hollow, protruding from the lateral internal surface 50c of the drum 50, towards the internal of the latter, adapted to improve the stirring of the laundry during the rotation of the drum 50;
  • the lifter 500 is, preferably, a substantially prismatic element, advantageously positioned with its longitudinal axis substantially parallel to the rotation axis of the drum 50.
  • the laundry washing machine 10 preferably comprises a washing/rinsing liquid supply circuit 100, connectable to water delivery mains, not illustrated, present outside the machine, and adapted to feed a washing/rinsing liquid (i.e. water, or water mixed with a washing and/or rinsing additive) into the tub 30.
  • a washing/rinsing liquid i.e. water, or water mixed with a washing and/or rinsing additive
  • the washing/rinsing liquid supply circuit 100 can advantageously comprise an additive housing 101, associated to the cabinet 20, containing an additive drawer 102 provided with a plurality of compartments, not illustrated, adapted to be filled with washing and/or rinsing additives; water, coming from water mains to which the washing/rinsing liquid supply circuit 100 is connected, is selectively taken into one or more of the compartments of the additive drawer 102 (e.g. by controlling suitable electromagnetic inlet valve(s), not illustrated), so as to contact and mix with the additive(s) contained therein, and forming a washing/rinsing solution.
  • washing/rinsing solution i.e. water mixed with washing and/or rinsing additive(s)
  • conduit 103 fluidly connecting the additive housing 101 and the washing tub 30.
  • the laundry washing machine 10 comprises a control unit 60, preferably managing the operations of the laundry washing machine 10, for example by controlling the drum motor rotation speed as well as the other valves and/or actuators comprised in the laundry treating apparatus, for example a drain pump and a user interface (not illustrated).
  • the laundry washing machine 10 is also advantageously provided with a drain circuit, also not illustrated, adapted for draining washing/rinsing liquid from the machine.
  • a wireless power transmitter unit 62 is preferably associated to the cabinet 20 and/or to the washing tub 30, separately from the drum 50; in the advantageous embodiment illustrated in Fig.l, the wireless power transmitter unit 62 is advantageously fixed to the tub 30, preferably to the internal wall of the tub 30 facing the drum 50.
  • the wireless power transmitter unit 62 can be mounted, for example, in a static or fixed part of the cabinet 20.
  • the laundry washing machine 10 is also preferably provided with a wireless power receiver unit 63, mounted in/on the drum 50.
  • the wireless power transmitter unit 62 is arranged for wireless transmitting electric power to the wireless power receiver unit 63.
  • the wireless power transmitter unit 62 is electrically connected, preferably wired, to the electric system, not illustrated, of the laundry washing machine 10; the electric system is connectable, for example, to the electric mains, not illustrated, of the building where the laundry washing machine 10 is installed, so as to be power supplied by such electric mains.
  • the wireless power transmitter unit 62 and the wireless power receiver unit 63 are positioned, one opposite to the other, fixed respectively to the washing tub 30 and to the drum 50, and preferably parallel one another, and to a plane perpendicular to the rotation axis of the drum 50.
  • the wireless power receiver unit 63 is fixed to a front wall 50a of the drum 50, advantageously corresponding to its opening side, and the wireless power transmitter unit 62 is preferably fixed to the front wall 30a of the tub 30, facing the wireless power receiver unit 63.
  • the wireless power transmitter unit 62 can be fixed to the rear wall 30b of the tub 30, preferably facing the drum 50, and the wireless power receiver unit 63 can be fixed to the rear wall 50b of the drum 50, facing the tub 30.
  • the wireless power receiver unit 63 is electromagnetically coupled to the wireless power transmitter unit 62.
  • the wireless power transmitter unit 62 and the wireless power receiver unit 63 are annular shaped (e.g. they are or comprise electrically conductive coils); more preferably, they are centered with the drum 50 center, and mounted parallel one another, and to a plane perpendicular to the rotation axis of the drum 50, respectively on the tub 30 and on the drum 50.
  • the power receiver unit 63 is advantageously fixed opposite the power transmitter unit 62, and parallel to the latter and to a plane perpendicular to the rotation axis of the drum 50.
  • Fig. 2 a sectional view of a preferred embodiment of the wireless power transmitter unit 62 and wireless power receiver unit 63 is schematically shown.
  • the wireless power transmitter unit 62 has preferably a transmission coil 620 which is electromagnetically coupled to a reception coil 630 of the wireless power receiver unit 63. They are preferably integrated into an enclosing material 622, 632 and they have, preferably, respectively magnetic sheets 621 and 631 that provide the side magnetic shield to the sides external to the coupling area, and improve the magnetic coupling between the two coils 620 and 630.
  • the wireless power transmitter unit 62 and the wireless power receiver unit 63 are parallel, centered with respect to the drum 50 center in order to maximize the electromagnetic coupling, as shown for example in Fig. 3.
  • the wireless power receiver unit 63 could be advantageously fixed in an annular opening formed in the drum 50 external periphery, while the power transmitter unit could advantageously have its side 622 fixed with screw or glued to the tub 30 wall.
  • the laundry washing machine 10 comprises an electric liquid supplying device 200, that will be better described in the following, mounted in/on the drum 50 and configured for dispensing a liquid 3 in an inner region of said drum 50.
  • the liquid 3 can be water or water mixed with a washing and/or rinsing agent.
  • the wireless power receiver unit 63 is configured for supplying electric power to the electric liquid supplying device(s) 200.
  • the electric liquid supplying device 200 is wired connected to the wireless power receiver unit 63.
  • an oscillating voltage can be generated by switching elements 602, that are electrically connected to the transmission coil 620 of the wireless power transmitter unit 62 coupled to the reception coil 630 of the wireless power receiver unit 63.
  • the voltage induced in the coil 630 can be preferably rectified and conditioned in a coil interface block 611, and can be preferably brought, preferably with wires, to one more electric liquid supplying device 200 (if they are more than one, they can be preferably, but not necessarily, electrically connected one another in parallel), only schematically illustrated in Figure 4, mounted in/on the drum 50.
  • the components of the interface block 611 could be integrated in the power receiver unit 63.
  • the power receiver unit 63 has multiple coils 630, each coil 630 preferably supplying, through its own interface block 611, one or more respective electric liquid supplying device 200.
  • FIG. 6 A further advantageous embodiment is shown in Fig. 6.
  • an interface unit 61 on the drum 50 there is fixed an interface unit 61, together with the power receiver unit 63 and the one or more electric liquid supplying device 200.
  • the interface unit 61 can be supplied by a dedicated reception coil 640 of the receiver unit 63, as shown in Fig. 6, or it could be connected in parallel to the reception coil 630 supplying the electric additive treating device(s) 200.
  • the interface unit 61 has preferably a wireless connection 601 to transfer measurement data to the appliance control unit 60.
  • the interface unit 61 could transfer to the appliance control unit 60 measured temperatures 615 from temperature measurement elements, not illustrated, positioned, for example, in the lifters 500; this would allow, for example, configuring washing cycles based on the real temperature measured in the drum 50, and not extrapolated by the temperature measured in the tub 30 that at the beginning of the cycle can be very different.
  • the interface unit 61 could be for example positioned integrated in the isolating support material 632 of the power receiver unit 63, or it could be positioned, for example, on the drum 50 rear wall 50b, preferably in a central region of the latter. The biggest advantage of this position is that the interface unit 61 components are not subject to the high centrifugal forces.
  • the electric power can be supplied to the electric liquid supplying device(s) 200 by a sliding electric contact, not illustrated, configured for electrically connecting the electric liquid supplying device(s) 200, mounted in/on the drum 50, to a power supply device, not illustrated, mounted on a not-rotating part of the laundry washing machine 10 (e.g. the tub 30 or the cabinet 20), preferably electrically connectable to the electric mains of a building.
  • a sliding electric contact not illustrated, configured for electrically connecting the electric liquid supplying device(s) 200, mounted in/on the drum 50, to a power supply device, not illustrated, mounted on a not-rotating part of the laundry washing machine 10 (e.g. the tub 30 or the cabinet 20), preferably electrically connectable to the electric mains of a building.
  • the electric liquid supplying device 200 is configured for drawing a liquid from a region of the tub 30 external to the drum 50, and for dispensing this liquid 3 in an inner region of the drum 50.
  • the electric liquid supplying device 200 is configured for drawing a liquid from an inner region of the drum 50 and dispensing this liquid 3 in a different inner region of the drum 50.
  • the laundry washing machine 10 comprises a liquid reservoir 7 mounted in/on the drum 50, and the electric liquid supplying device 200 is configured for drawing a liquid 3 from the liquid reservoir 7 and dispensing this liquid 3 in an inner region of the drum 50.
  • the electric liquid supplying device 200 is at least partially, preferably totally, housed within a lifter 500.
  • the electric liquid supplying device 200 is or comprises a pump 9.
  • the wireless power receiver unit 63 is configured for supplying electric power to the pump 9.
  • the pump 9 is wired connected to the wireless power receiver unit 63.
  • the pump 9 is housed within the lifter 500.
  • a discharge side of the pump 9 is connected to a discharge duct 92 configured for pumping a liquid 3 out of the lifter 500.
  • the discharge duct 92 is configured for pumping a liquid within the lifter 500; in this case, the lifter 500 comprises one or more perforated outlet walls 16 by which the liquid 3 can exit the lifter 500 and go to an inner region of the drum 50.
  • the liquid reservoir 7 is housed within the lifter 500. In preferred embodiments, like for example the one illustrated in Fig. 9, the liquid reservoir 7 coincides with a portion of the lifter 500.
  • the electric liquid supplying device 200 is controlled by the control unit 60 of the laundry washing machine 10, to which it is operatively connected.
  • the electric liquid supplying device 200 is operatively connected to the control unit 60 by a data transmission system, not illustrated.
  • the electric liquid supplying device 200 is controlled by a dedicated control system, not illustrated, mounted in/on the drum 50.
  • the dedicated control system is operatively connected to and controlled by the control unit 60.
  • a suction side of the pump 9 is fluidly connected by a suction pipe 91 to the internal of the tub 30.
  • control unit 60 is configured for activating the pump 9 when the angular position of the drum 50 is such that the suction pipe 91 is in contact with the liquid contained in the tub 30.
  • the dedicated control system is configured for activating the pump 9 when the angular position of the drum 50 is such that the suction pipe 91 is in contact with the liquid contained in the tub 30.
  • the liquid reservoir 7 is manually and/or automatic refillable, for example by opening a suitable lid 71 of the liquid reservoir 7.
  • a washing process can be selected and started, for example by a user interface, not illustrated.
  • a washing and/or rinsing liquid i.e. water or a solution of water mixed with a washing and/or rinsing additive
  • a washing and/or rinsing liquid can be loaded in the washing tub 30, for example by the washing/rinsing liquid supply circuit 100.
  • the pump 9 can be activated, so as to draw such liquid a, and to take it into the drum 50, where the laundry is positioned.
  • the electric liquid supplying device is electrically powered by a wireless power receiver unit mounted in/on the drum, and to which the electric power is wireless transmitted by a power transmitter unit associated to the cabinet and/or to the tub, separately from the drum, it is also possible avoiding sliding contacts (and the related wear and tear problems) for transmitting electric power between a not-rotating part of the washing machine (the cabinet or the washing tub) and the drum, and therefore the reliability of the washing machine is improved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Abstract

La présente invention concerne un lave-linge (10) comprenant : une armoire (20), une cuve de lavage (30) logée à l'intérieur de l'armoire (20), un tambour (50) logé rotatif à l'intérieur de la cuve (30), un dispositif électrique d'alimentation en liquide (200) monté dans/sur le tambour (50) et conçu pour distribuer un liquide (3) dans une région interne du tambour (30). L'invention concerne également un procédé permettant de faire fonctionner un tel lave-linge (10), consistant à : charger du linge à l'intérieur du tambour (50) ; activer le dispositif électrique d'alimentation en liquide (200) pour distribuer un liquide (3) dans une région interne du tambour (30).
EP19805659.0A 2019-11-18 2019-11-18 Lave-linge doté de meilleures performances de lavage Active EP4061992B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2019/081667 WO2021098944A1 (fr) 2019-11-18 2019-11-18 Lave-linge doté de meilleures performances de lavage

Publications (2)

Publication Number Publication Date
EP4061992A1 true EP4061992A1 (fr) 2022-09-28
EP4061992B1 EP4061992B1 (fr) 2026-04-22

Family

ID=68610246

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19805659.0A Active EP4061992B1 (fr) 2019-11-18 2019-11-18 Lave-linge doté de meilleures performances de lavage

Country Status (5)

Country Link
US (1) US20220403581A1 (fr)
EP (1) EP4061992B1 (fr)
CN (1) CN114929961A (fr)
AU (1) AU2019475326A1 (fr)
WO (1) WO2021098944A1 (fr)

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FR2673648B1 (fr) * 1991-03-08 1994-11-25 Ciapem Lave-linge muni d'un distributeur de produits lessiviels.
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CN114929961A (zh) 2022-08-19
US20220403581A1 (en) 2022-12-22
WO2021098944A1 (fr) 2021-05-27
AU2019475326A1 (en) 2022-04-21
EP4061992B1 (fr) 2026-04-22

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