EP4230785A1 - Système de dosage destiné à la distribution d'au moins une préparation fluide dans un espace intérieur d'un lave-linge - Google Patents

Système de dosage destiné à la distribution d'au moins une préparation fluide dans un espace intérieur d'un lave-linge Download PDF

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Publication number
EP4230785A1
EP4230785A1 EP22157798.4A EP22157798A EP4230785A1 EP 4230785 A1 EP4230785 A1 EP 4230785A1 EP 22157798 A EP22157798 A EP 22157798A EP 4230785 A1 EP4230785 A1 EP 4230785A1
Authority
EP
European Patent Office
Prior art keywords
dosing
free
pump
dosing system
unit
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.)
Pending
Application number
EP22157798.4A
Other languages
German (de)
English (en)
Inventor
Arnd Kessler
Robert RUIZ HERNANDEZ
Sergio LINZ
Ingo Hardacker
Dirck Seynaeve
Jan DE PAEPE
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.)
Henkel AG and Co KGaA
Original Assignee
Henkel AG and Co KGaA
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 Henkel AG and Co KGaA filed Critical Henkel AG and Co KGaA
Priority to EP22157798.4A priority Critical patent/EP4230785A1/fr
Priority to PCT/EP2023/051389 priority patent/WO2023156134A1/fr
Publication of EP4230785A1 publication Critical patent/EP4230785A1/fr
Pending legal-status Critical Current

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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
    • 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
    • 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
    • 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • 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
    • D06F39/022—Devices for adding soap or other washing agents in a liquid state

Definitions

  • the invention relates to a dosing system for dispensing at least one free-flowing preparation into an interior of a washing machine, comprising at least one dosing device and at least one container that can be coupled to the dosing device for storing the at least one free-flowing preparation.
  • Such dosing systems are used to be able to dose free-flowing preparations such as detergents in a user-friendly manner and to automate the dosing process as far as possible and to be able to optimize the washing result.
  • the WO 2011/134690 A1 shows a dosing system for use in the interior of a washing machine.
  • a preparation stored in the system for treating laundry in the washing machine is dispensed from a container by an actuator by moving a closure element.
  • WO 2017/167658 A1 describes a dosing device for use in the interior of a washing machine, which has valves that can be opened if necessary for dosing.
  • drum washing machines the laundry is applied to the container wall of the tub in various phases of the washing process by increasing the drum speed. The speeds reach 400 rpm to 1600 rpm. A high centrifugal force acts on the dosing device in the tub. The free-flowing preparations that are stored in the dosing device are also affected.
  • the valves for the product outlet are exposed to high pressure forces (overpressure or underpressure), especially during the centrifugal process. Movable valves with elastic seals are not designed for such a pressure load.
  • valves for dosing free-flowing preparations in dosing devices for use in tubs of washing machines is therefore disadvantageous with regard to reliable dosing and maintaining the functionality of the dosing device.
  • simple closure elements and valves are not suitable for achieving high dosing accuracy, even when dispensing very small amounts of the free-flowing preparation.
  • a dosing system for dispensing at least one free-flowing preparation into an interior of a washing machine, which comprises at least one dosing device and at least one container that can be coupled to the dosing device for storing the at least one free-flowing preparation.
  • the flowable preparation can be, for example, a detergent, detergent component, fragrance, bleach or solvent.
  • the container that can be coupled to the dosing device is preferably designed in such a way that it offers sufficient space for storing the at least one free-flowing preparation, sufficient for several washing processes, particularly preferably sufficient for 5 to 25 washing processes.
  • the dosing device has at least one electrical energy source for operating the dosing device.
  • the dosing device can be designed in the form of one or more batteries or rechargeable batteries, for example lithium polymer batteries, and supplies the other components of the dosing device with electrical energy.
  • the dosing device also comprises at least one dosing unit for dispensing a predefined amount of the at least one free-flowing preparation, at least one sensor unit for monitoring the dosing unit and at least one control unit coupled to the dosing unit and the sensor unit.
  • the dosing unit has a pump for dispensing the at least one free-flowing preparation.
  • the dosing unit can preferably have a motor and a gear for driving the pump.
  • the electrical energy source of the dosing device can supply the motor with electrical energy in order to ensure that the dosing process runs smoothly.
  • the dosing system is suitable for free positioning within the interior of the washing machine, preferably it is suitable for free positioning within the tub of a drum washing machine. It is preferably designed to be stable enough to withstand spin cycles inside the washing machine of 100 rpm, particularly preferably of up to 1600 rpm, without being damaged.
  • the design of the dosing unit with a pump makes it suitable for continuing to dose reliably under the influence of gravity of >1g and at the same time to seal the dosing system against the undesired escape of the free-flowing preparation and against the ingress of air and/or water.
  • one or more protective housings for have individual components of the dosing system in order to protect sensitive components from damage caused by mechanical influences.
  • the pump is designed as a peristaltic pump.
  • Peristaltic pumps offer the advantage that they function reliably even under the influence of high external forces, such as those that occur inside the tub during a washing process. With a dosing unit configured in this way, it can be ensured that reliable, precise dosing is possible at all times. In addition, high dosing accuracy can be achieved with peristaltic pumps even with very small dispensing quantities in the milliliter range and in the sub-milliliter range.
  • the peristaltic pump comprises a rotary body mounted eccentrically within a receptacle for conveying the at least one free-flowing preparation through a pump hose.
  • the pump hose is mounted around the body of rotation in the receptacle. Due to the eccentric mounting on an axis, for example in the form of a pump shaft, the part of the rotating body which has the greatest extent starting from the axis compresses a part of the pump hose to the maximum. If the rotating body, driven by the axis connected to the gearing and the motor of the dosing unit, is rotated about the latter, the point of maximum load on the pump hose moves along with the rotation. The rotating body continuously conveys the flowable preparation located in the pump hose through it. An exact flow rate can be determined by the rotational speed and frequency of rotation of the rotating body and can be adjusted by the control unit as required.
  • the rotary body can be controlled by the control unit using at least one signal transmitted by the sensor unit.
  • the sensor unit can detect the position of the rotary body and transmit this to the control unit for comparison.
  • the control unit can then in turn issue a control command to the dosing unit that is adapted to the desired delivery quantity of the free-flowing preparation and the current angular position of the rotary body, so that the dosing accuracy is constantly high.
  • the sensor unit has at least one Hall sensor and the rotating body has at least one magnet.
  • the position of the eccentric rotating body can be detected easily and precisely by means of the Hall sensor. As soon as the magnet located at a predetermined position on the body of rotation passes through the detection range of the Hall sensor, the precise position of the body of rotation can thus be determined.
  • the magnet is located in the area of the rotating body that maximally compresses the pump hose. This configuration is characterized by its functional reliability even when high forces are applied, for example when the speed of the tub is increased.
  • the rotating body can be moved by the control unit into a valve position for the tight closure of the peristaltic pump.
  • the sealing of the dosing unit must be ensured. It must be avoided that the environmental influence in the form of overpressure or negative pressure situations, which arise depending on the position of the dosing system in the rotating tub, cannot have a retroactive effect on the dosing system.
  • the container for storing the free-flowing preparation must be protected to avoid damage. Undesirable metering out when negative pressure is applied must be avoided, as must the entry of air and/or washing water into the container when excess pressure is applied.
  • the rotating body In the valve position, this can be used to seal off the dosing system.
  • the rotating body In the valve position, the rotating body is at a standstill and the maximum compression of the pump hose is preferably in a region of the receptacle that is as far away as possible from an inlet of the pump hose into the receptacle and its outlet from the receptacle.
  • the dosing unit motor continues to run after the end of a dosing process until the desired standstill and valve position is reached.
  • the motor In order to be able to determine a position that is as precise as possible, the motor preferably runs on until the magnet passes the Hall sensor again and can be positioned precisely from there. With a certain switching hysteresis, it is thus ensured that the rotating body and its valve position come to a standstill in a region of the receptacle in which a secure seal against external influences can take place.
  • the receptacle for the peristaltic pump is narrowed in places.
  • the load on the pump hose due to compression is reduced in a targeted manner in that the maximum load and thus also the best sealing occurs only in a predetermined partial area of the receptacle.
  • the compression of the pump tube is increased compared to the other areas.
  • the service life of the pump hose can be extended in an advantageous manner due to the increased compression only in places, which increases the service life of the dosing system overall, since replacing individual small components of the dosing system is unprofitable in practice and often simply not possible for the user.
  • the receptacle is preferably designed essentially round and through regional reduction of their radius narrowed in places.
  • the pump hose which is placed around the rotary body, runs essentially on a circular path along the inner wall of the receptacle.
  • the constriction of the receptacle is preferably in the area which is approximately 180°-300° when metered out, starting from the inlet in the conveying direction of the free-flowing preparation towards the outlet of the pump hose.
  • the container is suitable for the separate storage of at least two free-flowing preparations.
  • This offers the advantage of being able to provide several free-flowing preparations during a washing process with a single dosing system.
  • the container can have, for example, several cavities in which the free-flowing preparations are stored separately.
  • the dosing system has several separate containers for storing free-flowing preparations.
  • a dosing unit with several pumps or several dosing units each with one pump in order to dispense several separately stored free-flowing preparations from the container into the tub of the washing machine, which increases the user-friendliness of the dosing system.
  • the peristaltic pump has a double head.
  • the peristaltic pump includes a bidirectional freewheel.
  • a bidirectional freewheel For example, when using the double head in combination with the bidirectional freewheeling, a single dosing of two free-flowing preparations can be guaranteed with only one pump.
  • the freewheel enables a trouble-free change, so that depending on the direction of rotation of the pump shaft, only the first or a second pump head of the double head is in operation and the first or the second flowable Preparation is dispensed.
  • the bidirectional free-running prevents the other free-flowing preparation from being accidentally discharged at the same time or from backflow from occurring.
  • the dosing system comprises an essentially spherical outer shell, which is suitable for accommodating the dosing device and the container.
  • the spherical design offers the advantage that the distribution of forces on the dosing system is even, which increases the service life of the dosing system. It is also advantageous to design the dosing system in such a way that the container for storing the free-flowing preparation can be detachably coupled to the dosing system. As soon as the container or a cavity of the container has been emptied, the container can be removed and refilled or replaced by the user.
  • the outer shell also has an opening for each free-flowing preparation for the purpose of dosing it out.
  • FIG 1 a dosing system 1 according to the invention with a dosing device 2 and a container 3 is shown.
  • a dosing unit 4 has a pump 5, which is designed as a peristaltic pump in this exemplary embodiment.
  • the pump 5 is also designed as a double-head pump with a double-head 6 . This enables separate dosing of two free-flowing preparations that are stored in different cavities of the container 3 that are separate from one another.
  • At each outlet 8 a free-flowing preparation is dispensed into the interior of the washing machine, which is conducted from the container 3 via an inlet 9 into a pump hose 7 .
  • a motor 10 of the dosing unit 4 drives the pump 5 .
  • the motor 10 is protected from harmful external influences by a protective motor housing 12 .
  • the pump 5 is also protected by a protective pump housing 11 .
  • the dosing system 1 preferably has an interface for receiving dosing commands.
  • the dosing system 1 can be controlled by the user using a smartphone app.
  • Various washing programs and dosages can be set in the app.
  • two-way communication is advantageous, for example, the dosing system 1 can have additional sensors that detect the exact position of the dosing system 1 in the washing machine, the presence of water and the amount of laundry in the tub and transmit this information. In this way, a precise dosing can be implemented depending on the amount of laundry, the free-flowing preparation, the washing program and the individual treatment step of the washing process.
  • FIG figure 2 shows the dosing system 1 according to FIG figure 1 in a view without protective housing, so that a sensor unit 15 is visible, which extends over the double head 6.
  • a Hall sensor 16 is provided for each pump head of the double head 6 , which detects the rotary position of the rotary body 13 by means of a magnet 14 attached to a rotary body 13 .
  • the motor 10 is connected to a gear 17 and a bidirectionally acting freewheel 18, which enables a pump shaft 19 to be moved with a change of direction, so that the pump 5 with the double head 6 takes two liquid preparations from the container 3 via the pump hoses 7 can dispense individually and separately from each other.
  • FIG 3 is a cross-section of the dosing system 1 according to FIG figure 1 pictured.
  • the container 3 is detachably coupled to the dosing device 2 in a container receptacle 20 .
  • This has the advantage that the container 3 can be exchanged or refilled and used again in the dosing system 1 .
  • a leak-proof connection of the container 3 to the dosing device 2 is ensured.
  • the flowable preparation can only escape from the container 3 via the inlet 9 and reach the pump 5 via the pump hose 7 when the latter is driven by the motor 10 and the pump shaft 19 and sucks the flowable preparation out of the container 3 .
  • the two rotating bodies 13a,b each have magnets 14a,b, which are each detected by the two Hall sensors 16a,b in order to precisely detect the position of the rotating bodies 13a,b when passing the Hall sensors 16a,b. A consistently high dosing accuracy is thus ensured for both flowable preparations to be dosed.
  • figure 4 and 5 each show a cross section through a pump 5 of the dosing device 2.
  • figure 4 shows a receptacle 22 of the pump 5 for the pump hose 7a of a first free-flowing preparation with a constant segment radius of pump segments 21a-h.
  • the free-flowing preparation running via the inlet 9a into the pump tube 7a enters the pump 5, in the area of the pump segment 21h it leaves it again.
  • the free-flowing preparation is pressed inside the pump tube 7a through the pump segments 21a-h.
  • the free-flowing preparation which enters the pump 5 in the pump segment 21a, is sucked out of the container 3 fixed in the container receptacle 20 and discharged again in the area of the pump segments 21e-h.
  • the rotary body 13 loads the pump tube 7a alternately during its rotation. In the areas of compression, it also seals the pump tube 7a against the environment.
  • the sensor unit can use the magnet 14 to precisely detect the position of the rotary body 13, which is important for the dosing accuracy.
  • the pump head which is connected to the second free-flowing preparation via the pump tube 7b with the inlet 9b, stands still. In this way, an inadvertent dispensing of the second free-flowing preparation together with the first free-flowing preparation from the dosing system 1 can be prevented.
  • the receptacle of the pump 5 of the dosing device 2 in the pump segments 21e-g has a segment radius that is reduced compared to the area of the pump segments 21a-d and 21h, so that a step 23 extends over this area of the wall of the receptacle 22.
  • the maximum load on the pump tube 7 occurs in this area.
  • the sealing is best ensured in these segments.
  • the rotary body 13 can be rotated further after the end of the dosing process using the pump shaft 19 until it comes to a standstill in the narrowed area of the receptacle 22 and there a takes valve position.
  • the sealing of the dosing system 1 can best be ensured in this area, since the compression of the pump hose 7 is maximized here.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Devices For Dispensing Beverages (AREA)
EP22157798.4A 2022-02-21 2022-02-21 Système de dosage destiné à la distribution d'au moins une préparation fluide dans un espace intérieur d'un lave-linge Pending EP4230785A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP22157798.4A EP4230785A1 (fr) 2022-02-21 2022-02-21 Système de dosage destiné à la distribution d'au moins une préparation fluide dans un espace intérieur d'un lave-linge
PCT/EP2023/051389 WO2023156134A1 (fr) 2022-02-21 2023-01-20 Système de dosage pour la distribution d'au moins une préparation fluide à l'intérieur d'une machine à laver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22157798.4A EP4230785A1 (fr) 2022-02-21 2022-02-21 Système de dosage destiné à la distribution d'au moins une préparation fluide dans un espace intérieur d'un lave-linge

Publications (1)

Publication Number Publication Date
EP4230785A1 true EP4230785A1 (fr) 2023-08-23

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ID=80446163

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22157798.4A Pending EP4230785A1 (fr) 2022-02-21 2022-02-21 Système de dosage destiné à la distribution d'au moins une préparation fluide dans un espace intérieur d'un lave-linge

Country Status (2)

Country Link
EP (1) EP4230785A1 (fr)
WO (1) WO2023156134A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070000068A1 (en) * 2005-06-30 2007-01-04 Gerard France Paul Amaat R Fabric article treating device and system
WO2011134690A1 (fr) 2010-04-29 2011-11-03 Henkel Ag & Co. Kgaa Système de dosage à utiliser avec un appareil électro-ménager fonctionnant avec de l'eau tel qu'un lave-linge, un lave-vaisselle, un sèche-linge ou analogue
DE102015207342A1 (de) * 2015-04-22 2016-10-27 BSH Hausgeräte GmbH Wäschepflegegerät mit einem Dosiersystem
WO2017167658A1 (fr) 2016-03-30 2017-10-05 Unilever Plc Dispositif et procédé de communication pour blanchisserie
US20210032793A1 (en) * 2018-03-07 2021-02-04 Henkel Ag & Co. Kgaa Apparatus with a discharge module and sensor module
US20210189631A1 (en) * 2019-12-19 2021-06-24 Henkel Ag & Co. Kgaa Method and device for dispensing a fragrance composition during a cleaning cycle of a household appliance
US20220034020A1 (en) * 2018-11-15 2022-02-03 Lg Electronics Inc. Washing machine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070000068A1 (en) * 2005-06-30 2007-01-04 Gerard France Paul Amaat R Fabric article treating device and system
WO2011134690A1 (fr) 2010-04-29 2011-11-03 Henkel Ag & Co. Kgaa Système de dosage à utiliser avec un appareil électro-ménager fonctionnant avec de l'eau tel qu'un lave-linge, un lave-vaisselle, un sèche-linge ou analogue
DE102015207342A1 (de) * 2015-04-22 2016-10-27 BSH Hausgeräte GmbH Wäschepflegegerät mit einem Dosiersystem
WO2017167658A1 (fr) 2016-03-30 2017-10-05 Unilever Plc Dispositif et procédé de communication pour blanchisserie
US20210032793A1 (en) * 2018-03-07 2021-02-04 Henkel Ag & Co. Kgaa Apparatus with a discharge module and sensor module
US20220034020A1 (en) * 2018-11-15 2022-02-03 Lg Electronics Inc. Washing machine
US20210189631A1 (en) * 2019-12-19 2021-06-24 Henkel Ag & Co. Kgaa Method and device for dispensing a fragrance composition during a cleaning cycle of a household appliance

Also Published As

Publication number Publication date
WO2023156134A1 (fr) 2023-08-24

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