EP3839125A1 - Dispositif d'alimentation en agent de traitement pour un lave-linge et lave-linge - Google Patents

Dispositif d'alimentation en agent de traitement pour un lave-linge et lave-linge Download PDF

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Publication number
EP3839125A1
EP3839125A1 EP20209802.6A EP20209802A EP3839125A1 EP 3839125 A1 EP3839125 A1 EP 3839125A1 EP 20209802 A EP20209802 A EP 20209802A EP 3839125 A1 EP3839125 A1 EP 3839125A1
Authority
EP
European Patent Office
Prior art keywords
mixing chamber
metering
tub
chamber
control device
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.)
Withdrawn
Application number
EP20209802.6A
Other languages
German (de)
English (en)
Inventor
Werner Strothoff
Britta Schnittker
Marcel Weiland
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.)
Miele und Cie KG
Original Assignee
Miele und Cie KG
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 Miele und Cie KG filed Critical Miele und Cie KG
Publication of EP3839125A1 publication Critical patent/EP3839125A1/fr
Withdrawn legal-status Critical Current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
    • D06F39/022—Devices for adding soap or other washing agents in a liquid state

Definitions

  • Washing machines are known from the prior art which meet the need, for example in the commercial sector but also in the household sector, to optimize washing processes with regard to their detergent consumption while taking ecological and economic aspects into account.
  • dosing methods are necessary which guarantee an optimal detergent concentration for the respective washing process, which on the one hand ensures a satisfactory washing result and on the other hand prevents overdosing.
  • a washing machine in which the connection from the outside to the dispenser drawer is provided via a connecting element designed as an adapter.
  • the connecting element has at least one protruding connection piece on the outside of the device wall, for example the rear wall, to which a hose for feeding liquid detergent or another additive, for example impregnating agent or fabric softener, can be connected.
  • the connecting element further comprises a continuous channel which begins at the socket and enters the inner area of the dispenser drawer inside the washing machine. In the operational position, the connection piece is arranged higher than the entry point on the dispenser drawer, so that there is a gradient to the dispenser drawer over the extension area of the connecting element.
  • the invention is therefore based on the object of providing a device for supplying washing liquid with an optimized chemical effect.
  • liquid treatment agents such as chemicals for laundry treatment, detergents or bleaching agents
  • storage containers using simple means.
  • a predetermined reaction time can be provided for the dwell time of the mixture of addition agents in the mixing chamber, which is necessary for producing the desired treatment agent.
  • the individual additives are conveyed into the mixing chamber by means of metering pumps so that they remain in the mixing chamber after the metering pumps have been switched off and do not yet get into the tub. After the dwell time has elapsed, this mixture is drained or conveyed out of the outlet and then enters the tub.
  • the treatment agent is preferably rinsed out of the chamber with water running into the chamber, so that the treatment agent dissolved in the water reaches the tub. This mixture is usually already reactive when it comes into contact with the textiles to be treated in the washing machine.
  • control device is set up to activate the supply means for supplying water after a predetermined reaction time has elapsed in order to flood the mixing chamber with water and to convey out the mixture of adding means contained therein.
  • the mixture which consists of admixtures that have reacted with one another, can also be referred to as a treatment agent because it is used for chemical exposure in a washing process or rinsing process.
  • Detergents, bleaching agents, disinfectants or finishing agents for objects or textiles to be treated can serve as treatment agents.
  • a time in the range from 1 minute to 30 minutes, preferably 2 minutes to 10 minutes, is set as the reaction time in the control device.
  • the corresponding adding means which can also be referred to as components, are conditioned or adjusted accordingly.
  • At least two metering lines and the water inlet open into a coupling device which is connected upstream of the mixing chamber and is connected as a merged fluid section to the inlet of the mixing chamber, each metering line being provided with a valve to prevent backflow towards the storage container.
  • the device comprises a coupling device into which at least two metering lines and the water inlet open, which is connected upstream of the mixing chamber and is connected as a merged fluid section to the inlet of the mixing chamber. Furthermore, each metering line is preferably provided with a valve to prevent a backflow in the direction of the storage container.
  • the coupling device is also provided with a mixing section or designed as such. There is complete mixing of the in the mixing section Components instead. For mixing, it is irrelevant whether the components are each combined via their own feed, as originally provided for the mixing section, or whether they are already fed in via an upstream Y-piece.
  • the mixing chamber is cylindrical and has a volume in the range from 20 ml to 200 ml.
  • the inlet is located on one end face, the outlet being attached to the opposite end face.
  • the mixing chamber is cylindrical and filled with granules or balls, preferably made of ceramic or glass, with a diameter in the range from 0.5 mm to 5 mm, preferably in the range of about 2 mm. At least 90%, preferably the entire space of the chamber, is filled with the balls.
  • the reaction of the components with one another is accelerated because the components are spatially strongly distributed in the individual channels of the channel structure.
  • a porous body can also be used, for example aerated concrete or solidified lava.
  • the device comprises a vortex chamber which is arranged between the coupling device and the inlet of the mixing chamber or which is connected in a fluid-conducting manner.
  • This vortex chamber is connected downstream of the coupling device or the mixing section provided therein.
  • the individual metering lines are coupled into the mixing section, so that the coupling device or mixing section functions as a collecting line for supplying the mixture to the mixing chamber or to the reactor.
  • the mixture flows through the vortex chamber, whereby the individual adding means or components are mixed with one another.
  • the agents can react with one another before they come into contact with the water in order to achieve a predetermined treatment effect.
  • the metering device comprises a swirl chamber which is arranged between the outlet of the mixing chamber and the connecting line to the tub.
  • This vortex chamber which is connected downstream of the reactor, serves to further mix the components that did not react during the residence time in the reactor.
  • bleach activators such as Peractive LAC (acetylcaprolactam) as an added component
  • the unreacted Peractive LAC can react with the other components and thus lead to a delayed reaction to peracetic acid (PES).
  • the device comprises at least three storage containers, each with a metering line for metering different treatment agents, each metering line opening into the coupling device or mixing chamber or reactor.
  • the device comprises at least three storage containers, each with a metering line for metering different treatment agents, each metering line opening into the coupling device or mixing chamber or reactor.
  • the cross-sections of delivery rates and / or the cross-sections of the individual metering lines can be dimensioned in such a way that a uniform delivery rate is established in all of the metering lines.
  • the cross-sections in the individual metering lines are dimensioned in such a way that uneven delivery rates are set in a predetermined ratio. This means that almost any mixing ratio can be set.
  • the device comprises an ultrasonic actuator for applying ultrasound to the coupling device or the mixing section and / or mixing chamber.
  • the mixing of the individual supplied components can be considerably improved or the complete mixing is accelerated.
  • shelf life may be shortened after mixing or reacting.
  • the first storage container is filled with Peractive LAC, the second with alkali carrier and the third storage container with H2O2 in a predetermined solution or provided for such a filling.
  • the components In order to optimally produce peracetic acid from the 3 components, the components must be in a certain mixing ratio to one another.
  • the following mixing ratios based on the molar mass are preferred or particularly preferred:
  • Hydrogen peroxide to Peractive LAC to alkali carriers 0.5 - 3 to 1 to 0.1 - 0.2
  • the starting materials can also be present in diluted form.
  • the concentration Peractive LAC is 90% to 100%, alkali carrier 90% to 100% and H2O in a range from 4% to 12%, preferably 6% to 9%, particularly preferably 7.5%.
  • a 7.5% hydrogen peroxide solution is used in the household.
  • the alkali carriers are also partially diluted.
  • a desired mixing ratio of the components can be set in the solutions. This means; that by suitable dilution of the components, for example, a ratio of the components of 2: 1: 1 can be set.
  • a ratio of the components of 2: 1: 1 can be set.
  • more concentrated solutions can be used.
  • the control device is set up accordingly to activate the metering pumps in such a way that a mixing ratio of hydrogen peroxide to Peractive LAC to alkali carrier of 0.5 to 3 to 1 to 0.1 to 0.2 is established in the mixing chamber.
  • control device is set up to activate and deactivate the metering pumps sequentially, that is to say one at a time.
  • the control device is set up or programmed to activate at least two metering pumps or all of the metering pumps involved in producing the treatment agent at the same time and to deactivate them after the respectively predetermined expiry of the pumping time. This enables the mixing chamber or reactor to be filled quickly.
  • the control device is set up to activate and deactivate the actuators in the washing machine, such as the heating device, drive motor for the drum and inlet valve, as well as the drainage device based on the time sequence specified by a selected treatment program.
  • This control device is also set up to activate and deactivate the metering pumps and possibly the ultrasonic actuator according to a program sequence in order to operate the metering device integrated or connected in the washing machine.
  • the metering device in particular the mixing chamber and optionally the vortex chamber and preferably the storage container, are arranged within the housing.
  • the drum is mounted in a horizontal or inclined axis of rotation, the mixing chamber and the coupling device being arranged above the tub.
  • the completely reacted treatment agent can simply be drained from the mixing chamber or conveyed out of it by means of a water supply, so that the mixture of water with the completely reacted treatment agent reaches the tub due to gravity.
  • a washing machine 1 with a tub 2 is shown in a purely schematic representation.
  • the position and direction details relate to the operational set-up position of the washing machine 1.
  • Inside the tub 2 is a rotatably mounted drum 3 driven by an electric motor 13, which moves items of laundry in the tub 2 during a wash cycle.
  • the drum 3 is made of stainless steel and is provided with a large number of openings for the flow.
  • the housing 4 has a loading opening 9 through which the interior of the drum 3 can be reached through the sealing sleeve 6.
  • the loading opening 9 can be closed by means of a door 5.
  • a heating element 7 is arranged, which can heat the washing liquid in the tub 2.
  • an inlet valve 15 is sketched, which provides the inlet of the water from the supply network.
  • the water is passed through the dispenser box with the mixing chamber 22 via the connecting pipe 26 into the tub 2, with a Venturi tube 23 being arranged in the dispenser box 20 or in the chamber 22, which acts as a pump for supplying additives A, B from the storage containers 85 .86 serves.
  • a drain device 12 is arranged, which leads the used washing liquid or the rinsing water out of the tub 2 to the drain line, which usually opens into a sewer.
  • the control device 18 controls the inlet valve 15, the activity of the drain device 12, the drive motor 13, which is powered by a power unit or a frequency converter (not shown), and the heating element 7.
  • the control device 18 is in signal or data connection with an operating device 19 to read in user entries for program selection or parameter entries
  • the washing machine 1 further comprises an automatically controlled metering device 8 with at least one storage container 84, 85 for liquid or viscous additives A, B, which is arranged inside the washing machine housing 4.
  • Liquid components or chemicals for producing a detergent, bleaching agent or treatment agent are used as additives A, B, for example.
  • Detergent additives or rinse additives such as fabric softener can also be used depending on the desired application.
  • the metering device 8 comprises, as a central element, a mixing chamber 22 which has a predetermined volume and is connected on the outlet side to a connecting pipe 26 which provides the fluid connection to the tub 2.
  • At least two metering lines 81, 82 open into the mixing chamber 22 in order to guide the addition means A, B held in the respective storage containers 84, 85 into the chamber 22.
  • the metering lines 81, 82 are each provided with separately activatable metering pumps 91, 92 in order to convey the respective treatment agent A, B and thus convey a predetermined amount into the mixing chamber 22.
  • the metering lines 81, 83 can be designed to be flexible so that they can be laid easily. Alternatively, they can also be designed as tubes.
  • the connecting pipe 26 is preferably designed to be flexible or elastic, so that movements of the tub 2 can be absorbed or compensated for.
  • the metering device 8 comprises two storage containers 84, 85 with the corresponding metering lines 81, 82.
  • the two lines 81, 82 open into the coupling device 90, which serves as a collecting line or mixing section and is connected to the mixing chamber 22 serving as a reactor.
  • an ultrasonic actuator 91 is attached to the coupling device 90, which can be activated by the control device 18 in order to apply ultrasound to the additive A, B flowing through the coupling device or mixing section and thereby improve mixing.
  • a chemical reaction can also be initiated or accelerated in order to achieve the desired properties for treating laundry.
  • Fig. 2 shows the metering device 8 in a sketched individual view.
  • the device 8 comprises three storage containers 84, 85, 86, the first container 84 comprising the adding means A and being connected to the first fluid line 81 with the coupling device 90.
  • the fluid line 81 is provided with a first metering pump 87 which is controlled by the control device 18 ( Fig. 1 ) can be activated.
  • the second container 85 comprises the adding means B and is connected to the coupling device 90 by the second fluid line 82.
  • the fluid line 82 is provided with the second metering pump 88, which is controlled by the control device 18 ( Fig. 1 ) can be activated.
  • the third container 86 comprises the adding means C and is connected to the third fluid line 83 with the coupling device 90.
  • the fluid line 83 is provided with the third metering pump 89, which is controlled by the control device 18 ( Fig. 1 ) can be activated.
  • the coupling device 90 serves as a collecting section and opens into a vortex chamber 92 in order to better swirl the components A, B, C located in the main section and thereby mix them before they enter the reactor 22 as a mixture.
  • the swirl chamber is provided on the inside with guide means 93, which are designed, for example, as ribs or guide plates, in order to swirl the mixture of the addition means A, B, C flowing through.
  • the coupling device 90 further comprises an inlet for water W.
  • the water is stored in a fourth storage container 99 and can be conveyed by means of the fourth pump 98 through the supply line 14 to the coupling device 90 or to the mixing chamber 22.
  • the water connection with the inlet valve 15 can be used instead of the pump 98 and the water tank 99.
  • the mixture of addition agents A, B, C is conveyed by means of the pumps 87, 88, 89 through the coupling device 90 to the mixing chamber 22.
  • a vortex chamber 92 is connected upstream of the inlet 24 of the mixing chamber 22.
  • the swirl chamber 92 is provided with guide means 93 which mix the supplied components A, B, C with one another during the flow.
  • the mixture of the sucked in liquid additive components A, B, C passes from the coupling device into the mixing chamber 22, in which the mixture remains for a predetermined time, also referred to as the reaction time.
  • the mixture does not get into the tub 2.
  • water is let in through the coupling device 90 and to the mixing chamber 22 or conveyed by means of the pump 98 in order to keep the to convey or to press the treatment agent that has now arisen from the outlet 25 of the mixing chamber 22.
  • the delivery rate of the respective pumps 87, 88, 89 determines the delivery rate of the respective components A, B and C to be delivered.
  • the mixing chamber 22 is filled with granules or balls 27, preferably made of ceramic or glass, with a diameter in the range from 0.5 mm to 5 mm, preferably 1 mm to 3 mm, and serves as a reactor to allow the components supplied to react cause.
  • the outlet 25 is also provided with a further vortex chamber 28 in order to mix the treatment agent emerging from the mixing chamber 22 with the water.
  • the metering lines 81, 82, 83 are provided with non-return valves 94 in the area of the coupling device 90 in order to prevent an additive A, B or C from flowing back into a metering line for another additive B, C, A.
  • the water line 24 can also be provided with a check valve 94, for example.
  • the starting materials can also be in diluted form, for example with a 7.5% hydrogen peroxide solution.
  • the alkali carriers can also be partially diluted.
  • a mixing or reaction cell 22 is required as described above.
  • the individual components are brought together by means of a mixing unit, also referred to as a coupling device 90.
  • a mixing unit also referred to as a coupling device 90.
  • the reaction vessel or mixing chamber 22 is a container filled with glass beads, preferably cylindrical, in which the mixture remains for a defined time.
  • the optional backflow preventer 94 to avoid the unwanted mixing of raw materials, another static mixer, designed here as a second vortex chamber 28, downstream of the reaction chamber 22. Furthermore, sensors can be placed to control the reaction and the reaction temperature.
  • Mixing and reaction are carried out using the following methods: By starting the conveying media or metering pumps 87, 88, 89 at the same time or at a slightly different time, the 3 media are metered into the static mixer 90, 92 at the same time, mixed in the static mixer 90, 92, and mixed into the reaction vessel 22.
  • the reaction of the components takes place within 1 to 30 minutes, preferably 2 to 10 minutes.
  • the reaction vessel 22 is to be aligned in such a way that the gas produced can escape upwards.
  • the amount of peracetic acid required for bleaching must be able to be taken up by the reaction vessel 22.
  • the peracetic acid formed is expressed from the reactor 22 with one of the components or, preferably, with water.
  • the static mixer 90 and part of the lines are also rinsed in the process.
  • Handling is safe because the user does not come into contact with peracetic acid. High yield of peracetic acid, with safe conversion without side reactions.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detergent Compositions (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP20209802.6A 2019-12-19 2020-11-25 Dispositif d'alimentation en agent de traitement pour un lave-linge et lave-linge Withdrawn EP3839125A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019135125.1A DE102019135125A1 (de) 2019-12-19 2019-12-19 Einrichtung zum Zuführen von Behandlungsmittel für eine Waschmaschine und Waschmaschine

Publications (1)

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EP3839125A1 true EP3839125A1 (fr) 2021-06-23

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EP20209802.6A Withdrawn EP3839125A1 (fr) 2019-12-19 2020-11-25 Dispositif d'alimentation en agent de traitement pour un lave-linge et lave-linge

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EP (1) EP3839125A1 (fr)
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024066859A1 (fr) * 2022-09-30 2024-04-04 青岛海尔洗衣机有限公司 Dispositif de distribution automatique, procédé de commande, et machine à laver à tambours multiples
EP4417747A1 (fr) 2023-02-16 2024-08-21 E.G.O. Elektro-Gerätebau GmbH Dispositif de dosage pour ajouter des additifs à un lave-linge, et lave-linge

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022124160A1 (de) 2022-09-21 2024-03-21 Miele & Cie. Kg Waschmaschine und Verfahren zum Betrieb einer Waschmaschine

Citations (10)

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DE19654090C1 (de) 1996-12-23 1998-03-05 Henkel Ecolab Gmbh & Co Ohg Unabhängige Dosiersteuerung für Waschmaschinen
US6035472A (en) * 1997-05-31 2000-03-14 U.N.X. Inc Method of dispensing chemicals
DE10062111C1 (de) 2000-12-13 2002-07-25 Miele & Cie Verfahren zum Dosieren von Waschmittel
DE102006012283B3 (de) 2006-03-15 2007-03-01 Miele & Cie. Kg Waschmaschine mit externer Waschmittelbeschickung
US20070144558A1 (en) * 2003-12-16 2007-06-28 Bsh Bosch Und Siemens Hausgerate, Gmbh Dishwashing machine having a dosing device for additives and associated method
DE102007041643A1 (de) * 2007-09-03 2009-03-12 Lothar Ernst Wilhelm Weber Waschmaschine, Reinigungseinrichtung, Verfahren zum Waschen und Spülmaschine, u.a.
US20120047988A1 (en) * 2010-08-25 2012-03-01 Ecolab Usa Inc Method, apparatus and system for accurately measuring and calibrating liquid components dispensed from a dispenser
WO2015097634A1 (fr) * 2013-12-24 2015-07-02 BSH Hausgeräte GmbH Machine à laver et procédé d'utilisation d'une telle machine à laver
DE102016106777A1 (de) * 2016-04-13 2017-10-19 Miele & Cie. Kg Waschautomat zum Waschen von Wäsche und Verfahren zum Bleichen von Wäsche in einem Waschautomaten
CN110453449A (zh) * 2018-05-07 2019-11-15 无锡小天鹅电器有限公司 双冲击快速溶解装置和具有其的洗衣机

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Publication number Priority date Publication date Assignee Title
US3756457A (en) * 1970-12-11 1973-09-04 Economical Lab Inc Dual additive feeder for dishwashing
DE102015107976A1 (de) * 2015-05-20 2016-11-24 Beatrice Saier Dosiereinrichtung u.a.
DE102015110862B4 (de) * 2015-07-06 2019-03-07 Beatrice Saier Dosiereinrichtung zur Dosierung und Zuführung von Medien und Verfahren

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19654090C1 (de) 1996-12-23 1998-03-05 Henkel Ecolab Gmbh & Co Ohg Unabhängige Dosiersteuerung für Waschmaschinen
US6035472A (en) * 1997-05-31 2000-03-14 U.N.X. Inc Method of dispensing chemicals
DE10062111C1 (de) 2000-12-13 2002-07-25 Miele & Cie Verfahren zum Dosieren von Waschmittel
US20070144558A1 (en) * 2003-12-16 2007-06-28 Bsh Bosch Und Siemens Hausgerate, Gmbh Dishwashing machine having a dosing device for additives and associated method
DE102006012283B3 (de) 2006-03-15 2007-03-01 Miele & Cie. Kg Waschmaschine mit externer Waschmittelbeschickung
DE102007041643A1 (de) * 2007-09-03 2009-03-12 Lothar Ernst Wilhelm Weber Waschmaschine, Reinigungseinrichtung, Verfahren zum Waschen und Spülmaschine, u.a.
US20120047988A1 (en) * 2010-08-25 2012-03-01 Ecolab Usa Inc Method, apparatus and system for accurately measuring and calibrating liquid components dispensed from a dispenser
WO2015097634A1 (fr) * 2013-12-24 2015-07-02 BSH Hausgeräte GmbH Machine à laver et procédé d'utilisation d'une telle machine à laver
DE102016106777A1 (de) * 2016-04-13 2017-10-19 Miele & Cie. Kg Waschautomat zum Waschen von Wäsche und Verfahren zum Bleichen von Wäsche in einem Waschautomaten
CN110453449A (zh) * 2018-05-07 2019-11-15 无锡小天鹅电器有限公司 双冲击快速溶解装置和具有其的洗衣机

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024066859A1 (fr) * 2022-09-30 2024-04-04 青岛海尔洗衣机有限公司 Dispositif de distribution automatique, procédé de commande, et machine à laver à tambours multiples
EP4417747A1 (fr) 2023-02-16 2024-08-21 E.G.O. Elektro-Gerätebau GmbH Dispositif de dosage pour ajouter des additifs à un lave-linge, et lave-linge

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