EP3865616A1 - Appareil électrique à circulation d'eau - Google Patents

Appareil électrique à circulation d'eau Download PDF

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Publication number
EP3865616A1
EP3865616A1 EP21155150.2A EP21155150A EP3865616A1 EP 3865616 A1 EP3865616 A1 EP 3865616A1 EP 21155150 A EP21155150 A EP 21155150A EP 3865616 A1 EP3865616 A1 EP 3865616A1
Authority
EP
European Patent Office
Prior art keywords
pump
control
designed
electrochemical cell
components
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
EP21155150.2A
Other languages
German (de)
English (en)
Inventor
Werner Strothoff
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 EP3865616A1 publication Critical patent/EP3865616A1/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
    • D06F35/00—Washing machines, apparatus, or methods not otherwise provided for
    • D06F35/003—Washing machines, apparatus, or methods not otherwise provided for using electrochemical cells
    • 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 water-conducting electrical device.
  • the invention relates to a water-conducting electrical device which is designed to clean items to be cleaned and / or itself using a bleaching agent.
  • Bleaching agents such as hydrogen peroxide are only partially stable in solutions and can be stored to a limited extent. There is therefore a need to produce such a bleaching agent in situ prior to use in the water-bearing electrical device.
  • the invention thus addresses the problem of providing a water-bearing electrical device which is designed to generate a bleaching agent in situ.
  • a bleaching agent can be produced in situ in the water-bearing electrical device and no additional control and / or regulating device is required for controlling and / or regulating components of the electrochemical cell.
  • the invention relates to a water-bearing electrical device with a bleaching device, an electrochemical cell with several components, and a control and / or regulating device which is designed to control and / or regulate one or more of the components of the electrochemical cell.
  • the water-carrying electrical device also has a power supply and the control and / or regulating device is also designed to control and / or regulate the power supply device. This ensures a power supply for a unit of the water-conducting electrical device that is required during operation.
  • the power supply is preferably integrated into the control and / or regulating device.
  • One of the components is preferably a gas pump.
  • the gas pump can be supplied via the power supply of the device and can be controlled and / or regulated by means of the internal control and regulation device. This ensures the gas, preferably air, supply of the electrochemical cell internally in the water-carrying electrical device without an external source of compressed air. This is advantageous because electrical devices that carry water usually do not have a compressed air connection.
  • the gas pump is preferably connected to the electrochemical cell via a hose connection.
  • it is also advantageous that the amount of gas can be matched to the needs of the reactions in the electrochemical cell, so that laborious control of the gas supply is not necessary.
  • one of the components is a valve.
  • a component of the electrochemical cell for shutting off or controlling a flow of a fluid i.e. a liquid or a gas
  • a component of the electrochemical cell for shutting off or controlling a flow of a fluid i.e. a liquid or a gas
  • Multiple components can each be a valve.
  • the valves are, for example, one or more valves that control a supply of one or more substances such as water or electrolyte or discharge of solutions such as a bleaching agent, a catholyte or an anolyte generated during electrolysis.
  • the control and / or regulating device is furthermore preferably set up and designed to also control or regulate other device-internal valves that are not part of the electrochemical cell.
  • One of the components is preferably a liquid pump.
  • a component of the electrochemical cell can be controlled or regulated within the device for promoting a flow of a liquid.
  • Multiple components can each be a liquid pump.
  • the liquid pumps are, for example, one or more liquid pumps that promote a supply of one or more substances such as water or electrolyte.
  • the control and / or regulating device is furthermore preferably set up and designed to also control or regulate other device-internal liquid pumps that are not part of the electrochemical cell.
  • one of the components is a water tank assigned to the electrochemical cell.
  • a water tank assigned to the electrochemical cell means that the water tank is connected to the electrochemical cell so that water can be conducted from it into the electrochemical cell.
  • the water tank is preferably connected to the electrochemical cell via one of the liquid pumps.
  • the electrochemical cell can be cleaned with water, for example following electrolysis, by rinsing, or a liquid located in the electrochemical cell can be diluted with the water.
  • one of the components is a cathode and one of the components is an anode.
  • the cathode is preferred as a gas diffusion electrode more preferably designed as an oxygen diffusion electrode.
  • the anode can be a mixed oxide electrode.
  • the gas pump is designed as an air pump.
  • the gas pump is more preferably designed as a piston pump, an eccentric diaphragm pump, a rotary diaphragm pump, a vane pump, a linear pump, a pivot pump or a vibrating armature pump.
  • the gas pump is preferably designed as a piston pump.
  • the piston pump has the advantage of a long service life, a self-priming ability and a good efficiency.
  • the gas pump is preferably designed as an eccentric diaphragm pump.
  • the eccentric diaphragm pump has the advantage of very good control characteristics, a high level of tightness of a pump head, a good ratio of small size to high performance and excellent pressure and vacuum values.
  • the gas pump is preferably designed as a rotary membrane pump.
  • a rotary diaphragm pump has the advantage of very low pulsation, a very high degree of efficiency and an almost linear delivery rate of 0 to 500 mmbar back pressure.
  • the gas pump is preferably designed as a vane pump.
  • a vane pump has the advantage of a minimal size, a pulsation-free delivery, a linear control characteristic and an optimal controllability by regulating the motor speed.
  • the gas pump is preferably designed as a linear pump.
  • the linear pump has the advantage of a high delivery volume, a long service life and low noise development.
  • the gas pump is preferably designed as a pivot pump.
  • the pivot pump has the advantage of a very high delivery volume, higher performance than conventional linear pumps, low power consumption compared to other AC pumps and a long service life.
  • the gas pump is preferably a vibrating armature pump.
  • the oscillating armature pump has the advantage of a very long service life and low noise development. It is also inexpensive.
  • the electrochemical cell with the gas diffusion electrode is preferably designed to generate a bleaching agent during its operation.
  • the gas pump is preferably designed, a to generate the gas flow required for the electrochemical production of the bleach in the electrochemical cell through a gas diffusion membrane of the gas diffusion electrode. Since a liquid-carrying part of the electrochemical cell, ie the part in which the bleach-containing catholyte is produced, is preferably operated almost without pressure, the production of a small overpressure of up to 0.2 bar is generally sufficient around the electrochemical cell to operate.
  • a suitable gas pump can be selected depending on the cell size. For example, a volume flow of 2-5 l / min is sufficient for operating an electrochemical cell with an exchange area of 140 cm 2.
  • the electrochemically generated bleach is preferably hydrogen peroxide.
  • the electrochemical cell is supplied with water and air and an electrolyte during operation and an electric current is applied, water is oxidized at the anode of the electrochemical cell, with protons being formed. At the same time, the oxygen contained in the air is reduced at the cathode of the electrochemical cell, in particular the gas diffusion electrode. The protons are used up and hydrogen peroxide is produced.
  • the water-carrying electrical device preferably also has a metering device with one or more metering devices, the control and / or regulating device being set up and designed to control and / or regulate the one or more metering devices.
  • One or more metering devices are preferably connected to the electrochemical cell.
  • one or more metering devices can be connected directly to the bleaching chamber.
  • the control and / or regulating device is preferably set up and designed to control or regulate a plurality of metering devices separately from one another.
  • the metering device preferably has a plurality of metering devices, of which one metering device is connected to the electrochemical cell and another metering device is connected directly to the bleaching chamber.
  • control and / or regulating device is designed to control and / or regulate a stored cleaning program. This has the advantage that the electrochemical cell is controlled or regulated together with the cleaning program. While the cleaning program is being carried out, the bleaching agent generated by electrolysis is used in order to clean items to be cleaned in the bleaching device and / or the bleaching device itself.
  • the water-bearing electrical device is preferably designed as a washing machine, dishwasher or disinfector.
  • the washing machine, the disinfector and the dishwasher have bleaching devices because they are particularly suitable for bleaching, cleaning and / or disinfecting items to be cleaned such as laundry or dishes, medical instruments or laboratory equipment.
  • the bleaching device therefore has a cleaning room in which a cleaning process started by means of the cleaning program is carried out.
  • the bleaching device can therefore also be a device whose main concern is not to clean objects, but which is contaminated with germs through use and has to be cleaned itself at intervals and is therefore at least partially used as a bleaching device at times in order to be cleaned itself.
  • the bleaching device therefore represents a device which is suitable for cleaning objects by putting them into operation or cleaning itself in order to prevent their calcification, contamination and / or contamination.
  • Fig. 1 shows a sectional view of a water-conducting electrical device according to the invention.
  • the water-bearing electrical device 1 is shown as an example of a washing machine. It has a bleaching device 2 in the form of a tub unit and an electrochemical cell 3.
  • the electrochemical cell 3 has a cathode (not shown) arranged in a cathode space 31 and an anode (not shown) arranged in an anode space 32.
  • the cathode space 31 and the anode space 32 are spatially separated, for example, by a membrane.
  • the water-carrying electrical device 1 has a water tank 9 which is connected to the electrochemical cell 3 via a line 5 and a pump 10, so that the electrochemical cell 3 can be supplied with water from the water tank 9 by activating the pump 10.
  • the water-carrying electrical device 1 has a metering device with two metering devices 7, 8.
  • One metering device 7 is connected to both the cathode compartment 31 and the anode compartment 31 of the electrochemical cell 3 via a metering line 71 via a valve 4, while the further metering device 8 is connected to the bleaching device 2 via a further metering line 81.
  • the anode compartment 32 and the cathode spaces 31 are each connected to the bleaching device 2 via a line 33.
  • the cathode space 31 is also connected to a gas pump 6 via a gas supply line 61.
  • the water-bearing electrical device 1 has a control and / or regulating device 11 which is set up and designed to control and / or regulate a cleaning or washing program that is stored in it by a user (not shown) of several Cleaning programs (not shown) can be selected.
  • a washing program of a washing machine usually has a washing process for washing laundry (not shown) in the bleaching device 2, one or more rinsing phases for rinsing the laundry and a spin phase for spinning the laundry.
  • a power supply device (not shown) is integrated into the control and / or regulating device 11; but it can also be designed separately, which is not shown here.
  • the control and / or regulating device 11 is connected via an electrical line 12 to the cathode arranged in the cathode space 31, via an electrical line 14 to the anode arranged in the anode space 32, via an electrical line 15 of the gas pump 6, via an electrical Line 16 is connected to the metering device 7, via an electrical line 17 to the metering device 8 and via an electrical line 18 to the liquid pump 10.
  • Each of the components mentioned can be separately controlled and / or regulated and supplied with power by means of the control and / or regulating device 11.
  • the valve 4 can also be controlled and / or regulated and supplied with power via an electrical power (not shown) by means of the control and / or regulating device 11.
  • control and / or regulating device controls and / or regulates the sequence of the washing program by controlling or regulating the above components and supplying them with power, if necessary.
  • control and / or regulating device controls and / or regulates the electrochemical cell and supplies it with power when the washing program provides for electrolysis for the in situ generation of a bleaching agent.
  • water and an electrolyte are supplied to the cathode chamber 31 and the anode chamber 32 from the metering device 7 via the metering line 71 by means of appropriate activation of the metering device 7 and the valve 4.
  • the electrolysis is carried out by applying current to the cathode and the anode and by supplying an oxygen-containing gas from the gas pump 6 via the gas line 61 into the cathode space 31 in such a way that hydrogen peroxide is generated.
  • the hydrogen peroxide-containing catholyte generated in the cathode compartment 31 is fed via the line 33 to the bleaching device before and / or during a washing process.
  • the electrolysis After the electrolysis has ended, by activating the pump 10 by means of the control and / or control device 11, the electrochemical cell 3 can be rinsed with water.
  • the further dosing device 8 by means of the control and / or regulating device 11, further detergent components can be added to the bleaching device 2 via the dosing line 81 while the washing program is running.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Washing And Drying Of Tableware (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
EP21155150.2A 2020-02-12 2021-02-04 Appareil électrique à circulation d'eau Pending EP3865616A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020103662.0A DE102020103662A1 (de) 2020-02-12 2020-02-12 Wasserführendes elektrisches Gerät

Publications (1)

Publication Number Publication Date
EP3865616A1 true EP3865616A1 (fr) 2021-08-18

Family

ID=74553613

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21155150.2A Pending EP3865616A1 (fr) 2020-02-12 2021-02-04 Appareil électrique à circulation d'eau

Country Status (2)

Country Link
EP (1) EP3865616A1 (fr)
DE (1) DE102020103662A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022130124A1 (de) 2022-11-15 2024-05-16 Miele & Cie. Kg Wasserführendes elektrisches Gerät und Verfahren zum Betreiben des wasserführenden elektrischen Geräts

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4319973A (en) * 1977-12-06 1982-03-16 Battelle Memorial Institute Method and machine for washing and bleaching textiles
EP1199931A1 (fr) * 1999-08-05 2002-05-02 Steris Inc. Synthese electrolytique de l'acide peracetique
EP2220282A1 (fr) * 2007-11-27 2010-08-25 Unilever PLC Système de blanchisserie pour textiles délicats
US20170314179A1 (en) * 2014-09-19 2017-11-02 Sharp Kabushiki Kaisha Washing machine, electrolyte for generating electrolyzed water, and electrolyzed water for rinse

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1739207A3 (fr) 2005-06-27 2007-10-03 Unilever N.V. Dispositig et méthode de génération de péroxyde
US20110237484A1 (en) 2010-03-25 2011-09-29 Basf Se Electrochemical textile-washing process
PL3692200T3 (pl) 2017-10-05 2023-09-25 Electrolux Appliances Aktiebolag Pralka
DE102018218878A1 (de) 2018-11-06 2020-05-07 Henkel Ag & Co. Kgaa Vorrichtung zur Aktivierung einer Mediatorspezies

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4319973A (en) * 1977-12-06 1982-03-16 Battelle Memorial Institute Method and machine for washing and bleaching textiles
EP1199931A1 (fr) * 1999-08-05 2002-05-02 Steris Inc. Synthese electrolytique de l'acide peracetique
EP2220282A1 (fr) * 2007-11-27 2010-08-25 Unilever PLC Système de blanchisserie pour textiles délicats
US20170314179A1 (en) * 2014-09-19 2017-11-02 Sharp Kabushiki Kaisha Washing machine, electrolyte for generating electrolyzed water, and electrolyzed water for rinse

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022130124A1 (de) 2022-11-15 2024-05-16 Miele & Cie. Kg Wasserführendes elektrisches Gerät und Verfahren zum Betreiben des wasserführenden elektrischen Geräts
EP4411025A2 (fr) 2022-11-15 2024-08-07 Miele & Cie. KG Appareil électrique à circulation d'eau et procédé de fonctionnement de l'appareil électrique à circulation d'eau
EP4411025A3 (fr) * 2022-11-15 2024-11-06 Miele & Cie. KG Appareil électrique à circulation d'eau et procédé de fonctionnement de l'appareil électrique à circulation d'eau

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