EP2794976B1 - Procédé de fonctionnement d'un appareil ménager comprenant un réservoir accumulateur et un générateur de moyen d'oxydation, et appareil ménager correspondant - Google Patents

Procédé de fonctionnement d'un appareil ménager comprenant un réservoir accumulateur et un générateur de moyen d'oxydation, et appareil ménager correspondant Download PDF

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Publication number
EP2794976B1
EP2794976B1 EP12812577.0A EP12812577A EP2794976B1 EP 2794976 B1 EP2794976 B1 EP 2794976B1 EP 12812577 A EP12812577 A EP 12812577A EP 2794976 B1 EP2794976 B1 EP 2794976B1
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EP
European Patent Office
Prior art keywords
container
ozone
oxidising agent
generator
household appliance
Prior art date
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EP12812577.0A
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German (de)
English (en)
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EP2794976A1 (fr
Inventor
Antonio BARRADO FRANCO
Andreas Bischof
Andreas Hanau
Hartmut Schaub
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BSH Hausgeraete GmbH
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BSH Hausgeraete GmbH
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Publication of EP2794976A1 publication Critical patent/EP2794976A1/fr
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    • 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
    • D06F35/001—Washing machines, apparatus, or methods not otherwise provided for using ozone
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • 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
    • 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

Definitions

  • the invention relates to a method for operating a household appliance with a storage container and an oxidizing agent generator and a household appliance suitable for this.
  • Ozone is a powerful disinfectant and, in conjunction with a care or cleaning agent used in a household appliance, also causes complex and rapid reactions that enable an improved care or cleaning effect.
  • oxidizing agents in a household appliance is particularly useful when the water used in a treatment process for items of laundry or crockery, for example, is at least partially collected in a storage container to save water. Depending on the type of liquid and / or its load with organic substances, this water can easily become a nutrient medium for microorganisms.
  • the use of an oxidizing agent can prevent the spread or eliminate microorganisms.
  • the aqueous liquid stored or stored for a certain period of time is treated by bringing it into contact with the oxidizing agent. The aqueous liquid is then available as sterile as possible for a further treatment process in the household appliance that requires water.
  • the treatment of laundry in a washing machine comprises several treatment steps (wetting phase, prewash, main wash, rinse). After the main wash in the rinsing phase, the laundry still containing detergent solution and dirt residues is rinsed several times in the drum, with spinning after the main wash and between the rinsing steps.
  • the rinse water especially the last rinse water, is particularly suitable for storage because this only has a small amount of dirt and detergent.
  • a disadvantage here is that the period of time between collecting the water in a storage container and switching off the washing machine is relatively short. If an extended operating time of the washing machine or a standby mode is to be excluded, the treatment of the aqueous liquid with the oxidizing agent, which usually requires energy, must take place in a very short time.
  • the WO 2007/143785 A1 describes a system and apparatus for introducing ozone into a washing machine with a first conduit for introducing ozone from an ozone supply into a washing liquid inlet and a second conduit for discharging ozone into an area above a washing chamber.
  • a Venturi nozzle is used to introduce ozone and mix it with a washing liquid.
  • WO 2008/119631 A1 describes a washing machine in which microorganisms present in a dispensing bowl are eliminated by direct introduction of ozone from an ozone generator.
  • water is added to the dispenser at the same time as the ozone, so that the ozone / water mixture is passed through the dispenser. This is to minimize the possibility of ozone escaping from the washing machine.
  • the DE 32 32 057 A1 describes a cleaning machine for laundry, dishes or the like with a storage container for a cleaning agent and an ozone generator, at the output of which an ozone feed line opening into this is connected for the purpose of ozonizing the cleaning agent.
  • a vent line and a deozonization device consisting of a heating coil are assigned to the storage container.
  • Fig. 1 shows a washing machine in which an ozone generator has a compressor so that the ozone can flow into the storage container with the required overpressure.
  • the U.S. Patent 5,960,501 describes a system and method for treating laundry with ozone in an amount that is tailored to the amount of laundry.
  • used wash liquor is mixed with ozone, the ozone being sucked into the wash liquor via a venturi nozzle.
  • the WO 2007/086221 A1 describes a washer-dryer with an ozone generator for providing ozone in a process air duct.
  • the WO 2005/063109 A1 describes a dishwasher using ozone at least for cleaning and disinfection.
  • the U.S. Patent 5,493,743 describes a method and an apparatus for washing laundry using a closed or open ozonated wash water system. Washing water, which is kept in an external contact tank, is ozonated before it is used in the washing machine.
  • the system includes a venturi to draw ozone into the water in the externally located storage and contact tanks.
  • the EP 1 975 299 A1 describes a washing machine with a washing container, a tank for storing water after it has been used in the washing container, and a means for cleaning the water stored in the tank, this cleaning means comprising an ozone generator.
  • the DE 10 2010 027 795 A1 describes a household appliance with a container that is exposed to moisture during operation of the household appliance and tends to form a biofilm on one of its inner surfaces, and a plasma generator, the plasma generator can generate a cold atmospheric pressure plasma and at a distance of less than 5 cm from an inner surface of the container.
  • the US 2005 / 0251925A1 describes a washing machine comprising a wash volume and a mixing chamber below the wash volume, which are in fluid communication, and at least one sparger pipe within the mixing chamber for connection with an ozone source.
  • an ozone source in the washing machine which is connected to the injection pipe.
  • the EP 2 390 398 A1 describes a household appliance comprising a tub for cleaning an item to be cleaned, a tank for temporarily storing process water drained from the tub, a controller which is designed to convey process water from the tub into the tank and, in a later cleaning cycle, the process water with new items from the tank back to the vat.
  • the household appliance also includes a water treatment device with an electrolysis cell with at least one diamond electrode for treating the process water to be stored in the tank, the controller being designed to treat the process water with the water treatment device before and / or during storage in the tank.
  • the DE 10 2009 026827 A1 describes a domestic appliance with a container for receiving objects to be treated and an ozone generator and an ozone removal device, the ozone removal device and a fan being arranged in an exhaust air duct, which exhaust air duct is connected to the container.
  • the DE 10 2005 004 091 A1 describes a dishwasher with a washing compartment, an ozone generator and devices for washing items to be washed by means of washing liquor, which has a storage unit connected to the washing compartment in an air-conducting manner, which serves on the one hand to absorb ozone and / or hydroxyl radicals during their formation or production and on the other hand to dispense Ozone and / or hydroxyl radicals are used during a partial program step “drying” and / or a standstill phase of the dishwasher, whereby deodorization is effected.
  • the WO 2004/100755 A1 describes a washing device with an ozone generator, whereby the generated ozone-containing water is stored.
  • the object of the invention is to provide a method for operating a household appliance with an oxidizing agent generator and a storage container for a Provide aqueous liquid that allow the most effective possible processing of the aqueous liquid to be stored with the oxidizing agent generator.
  • step (b) is carried out at least while step (a) is being carried out.
  • step (b) is advantageously carried out for a predetermined period of time ⁇ t after step (a) has ended. This makes it possible to react optimally to the load on the household appliance, for example a washing machine and its components such as inner walls, as well as the stored aqueous liquid with microorganisms.
  • an aqueous liquid used in the treatment container is brought into contact with the solution of the oxidizing agent kept ready in the container.
  • only the rinsing water from the last rinsing step, which is particularly clean, can be collected for intermediate storage in the storage container.
  • an aqueous liquid used in the treatment container is brought into contact with the solution of the oxidizing agent kept ready in the container.
  • the mixing device can be a stirrer, a pumping device and / or structural features in the storage container.
  • an aqueous liquid to be treated is not restricted and can be a rinsing liquid and / or a washing liquid.
  • an already relatively clean aqueous liquid from the treatment container is advantageously used.
  • a solution containing oxidizing agent is brought into contact with an aqueous liquid conveyed from the treatment container into the storage container.
  • Used rinse water is temporarily stored in the storage container in a household appliance according to the invention such as a washing machine or a dishwasher, to then be used, for example, in a subsequent wash cycle.
  • a household appliance such as a washing machine or a dishwasher
  • the used water from the last rinse cycles in a washing machine is so clean that it can easily be used instead of fresh water for wetting and washing laundry.
  • the storage tank has suitable devices such as stirrers, pumping devices and / or structural features that enable intensive mixing.
  • the mixture resulting from the mixing of the aqueous liquid from the treatment container and the solution containing the oxidizing agent can advantageously be conveyed back into the treatment container.
  • This mixture is disinfected and can thus contribute to disinfecting the objects in the treatment container.
  • This procedure makes it possible, particularly in the event that the household appliance is a washing machine, that the laundry items are subjected to an additional hygiene measure and, moreover, are provided with a “freshness odor”, which indicates an increased hygienic condition of the laundry items.
  • the oxidizing agent is not restricted as long as it can be used in the household appliance.
  • it can be hypochlorite, which is generated by electrolysis of saline solution, or an oxidizing gas.
  • the oxidizing gas can be generated in a plasma generator, for example.
  • ozone is particularly advantageously used as the oxidizing agent.
  • the type of production of the oxidizing agent-containing solution is not restricted as long as this is possible and useful in a household appliance.
  • gaseous ozone can be generated in an ozone generator and this gas can then be introduced into a container in which water is placed.
  • the container is a separate container for storing the oxidizing agent-containing solution.
  • an aqueous oxidizing agent such as ozone can be used Solution are introduced into the container for storing the oxidizing agent-containing solution.
  • the oxidizing agent generator can be designed in any way as long as it generates an oxidizing agent which can be used to disinfect aqueous liquids from the treatment container, e.g. a tub.
  • the oxidizing agent will preferably be an inorganic oxidizing agent, it being possible for it to be used as a liquid or gaseous oxidizing agent.
  • the use of gaseous oxidizing agents, in particular ozone, is preferred for the present invention.
  • the oxidizing agent generator is therefore an ozone generator.
  • Ozone can be generated in a household appliance in different ways, for example by means of a UV lamp generator by irradiating oxygen with UV radiation below 200 nm, or by a corona discharge, in which oxygen is an electrical discharge in the form of a corona is exposed.
  • the corona is generated by applying a high voltage of generally at least 5000 V to a suitable arrangement of electrodes.
  • Such an ozone generator is in particular a generator of ozone which can be introduced into water in a suitable manner.
  • such an ozone generator is arranged outside the container or storage container.
  • a pump for conveying an aqueous liquid is arranged between the storage tank and the treatment tank.
  • This can be, for example, a single pump in one or two connecting lines between the storage tank and the treatment tank. If there is only one connection line, e.g. a connection hose, the transport takes place via a common connection line in both directions.
  • a plasma generator can advantageously be used as an oxidant generator in these containers or parts be present, which can generate a cold atmospheric pressure plasma and is preferably arranged at a distance of less than 5 cm, more preferably less than 2 cm, from an inner surface of the container or a dispensing tray.
  • the plasma generator is arranged in a dispensing bowl of a washing machine or a washer-dryer.
  • the plasma generator is arranged in a storage container for an aqueous liquid.
  • the household appliance is preferably a washing machine, a washer-dryer or a dishwasher.
  • the household appliance preferably has an oxidizing agent removal device.
  • ozone is removed by being absorbed or decomposed on a suitable material.
  • the decomposition can take place in that the ozone reacts chemically with a suitable material or is decomposed catalytically, for example with the formation of oxygen.
  • the ozone removal device preferably contains a filter unit, the filter unit advantageously comprising a material containing carbon or another easily oxidizable material.
  • Activated carbon is particularly preferably used as the carbon-containing material. Activated carbon is generally decomposed by ozone to form carbon dioxide, so that the amount of activated carbon in a filter unit gradually decreases. If the household appliance has an ozone removal device, a sight glass arranged on it can therefore be advantageous. A user of the household appliance can thus recognize whether the filter unit is still functioning properly even without the presence of an ozone sensor, for example in that there is still enough activated carbon.
  • the ozone removal device used in embodiments of the household appliance according to the invention can alternatively or in addition to a filter unit have a catalyst for the decomposition of ozone, for example a catalyst for converting ozone into oxygen.
  • An ozone generator preferably used in a household appliance according to the invention generates approximately 20 mg / h to 30 mg / h ozone. For this purpose, it is generally sufficient to use a filter unit that is loaded with about 10 g of activated carbon for the entire operating life of the household appliance.
  • the oxidizing agent removal device present in embodiments of the invention can be arranged at various locations in the household appliance.
  • an ozone removal device and a fan can be arranged in an exhaust air duct, which exhaust air duct is connected to the treatment container.
  • the Ozone removal device is preferably arranged between the treatment tank and the fan.
  • the exhaust air duct provided in embodiments of the invention can lead into a room in which the household appliance is installed, since the exhaust air contains only small amounts of carbon dioxide and no other disruptive components.
  • Venturi nozzles can be useful in order to introduce an oxidizing agent, in particular ozone, into the flow of an aqueous liquid flowing through the Venturi nozzle.
  • a Venturi nozzle the air inlet of which is connected to an oxidizing agent generator, e.g. an ozone generator, could be arranged between the water supply and the storage container or container of the household appliance.
  • an oxidizing agent generator e.g. an ozone generator
  • the oxidizing agent and in particular ozone can, however, be brought into an aqueous solution in any desired manner.
  • water be it relatively clean water from the treatment tank or tap water, can be placed in a tank for storing a solution of the oxidizing agent and this can then be treated with gaseous ozone or a concentrated ozone solution.
  • the storage container can also be provided as such a container.
  • a Venturi nozzle the air inlet of which is connected to an oxidizing agent generator, e.g. an ozone generator, can also be arranged between the water supply and a bowl. This also enables ozone to be introduced into the tub via the induction bowl, and thus additional disinfection.
  • an oxidizing agent generator e.g. an ozone generator
  • the household appliance according to the invention has a treatment chamber which can be configured differently depending on the household appliance.
  • the treatment chamber In the case of a washing machine or a washer-dryer, the treatment chamber generally assumed is a tub in which a drum for receiving objects to be treated is rotatably mounted. As a treatment chamber in this The ensemble of drum and tub and in particular the drum, ie the laundry drum, is therefore considered to be meaningful.
  • a washing machine generally has a tub and a drum rotatably mounted in the tub for receiving laundry items to be cleaned.
  • a washing machine also generally has a lye drainage system with a lye pump, which is arranged on the bottom of the tub, and generally laundry carriers and / or scooping devices.
  • the household appliance is a washing machine
  • a pressure sensor and / or a temperature sensor are preferably arranged therein in the tub.
  • Pressure and temperature sensors are preferably arranged in a lower area of the tub so that the pressure and / or temperature of an aqueous liquid present in the tub can be measured.
  • the objects to be treated are not restricted according to the invention, with treatment being understood in particular to mean cleaning.
  • the objects to be cleaned can in particular be dishes or laundry. According to the invention, cleaning is also understood to mean refreshing.
  • the household appliance according to the invention can advantageously contain a sensor for measuring an oxidizing agent content.
  • the household appliance according to the invention can have an ozone sensor for measuring an ozone content.
  • An ozone sensor can be used, for example, to control the production of ozone as a function of a determined degree of contamination of the aqueous liquid from the treatment container.
  • a corresponding sensor for the degree of contamination and a sensor for the oxidizing agent in the container and / or storage container are advantageously located in the treatment vessel.
  • the household appliance enables the water used to be automatically processed with an oxidizing agent and, in embodiments, also eliminates it, in particular the elimination of ozone, within the household appliance.
  • a user of the household appliance can be informed about the parallel production of an oxidizing agent by the oxidizing agent generator and the provision of the oxidizing agent and / or an ongoing treatment of the aqueous liquid with an oxidizing agent.
  • the household appliance can also contain a display device relating to the automatic treatment of the water used with an oxidizing agent and / or the removal of excess oxidizing agent, e.g. ozone.
  • the display device can be an optical and / or acoustic display device.
  • the household appliance then preferably has a display device for a non-functioning ozone removal.
  • the ozone removal does not work, for example, if an existing ozone sensor, for example in the detergent dispenser or the tub of a washing machine, detects an ozone concentration above a predetermined limit value, e.g. 1 ppm, after carrying out the method according to the invention.
  • a malfunctioning ozone removal can exist when the fan or the ozone removal device is not functioning properly. The latter can be the case, for example, when a carbon-containing material in a filter unit has been used up or a catalyst for the catalytic decomposition of ozone is poisoned.
  • control device which, in addition to controlling a cleaning program, can also take countermeasures in the event that the generation and / or removal of oxidizing agents, e.g. ozone, does not work.
  • the control device can give a user a message and / or prevent the storage of the aqueous liquid, in particular its pumping out into the storage container.
  • an exhaust air duct is connected to an air inlet duct of the ozone generator in the household appliance. This eliminates the need for anything that may be required for operating the ozone generator Fan in a supply air duct of the ozone generator.
  • the exhaust air duct is connected to the supply air duct via a pitot tube. As a result, the air flow required for the ozone generator is generated particularly efficiently.
  • the fan is advantageously also operated for a predetermined period of time when the ozone generator has already been switched off.
  • the air from the exhaust air duct is preferably passed at least partially into an air inlet duct for the ozone generator.
  • the invention has the advantage that a longer storage of an aqueous liquid is made possible in a simple and very efficient manner, for example an aqueous liquid from a laundry treatment process. According to the invention, this is done in a time-saving manner in parallel with a treatment process for objects in a treatment container.
  • contamination of the storage container can also be prevented or eliminated. This avoids the need for separate cleaning of the container and its hydraulic connections, as would be necessary in the event of prolonged use, in particular over the life of the household appliance.
  • ozone-containing water can also kill microorganisms in the treatment container, e.g. the tub of a washing machine, and in the lines through which it flows.
  • the washing machine 1 has a tub 4 in which a laundry drum 2 with laundry 7 therein can be rotatably mounted and operated by a drive motor 14.
  • Laundry drivers 39 and scooping devices 5 for the washing liquor 6 contribute to an intensification of the flooding of the laundry 7 with washing liquor 6 or with rinsing water 6.
  • the washing machine has a caustic supply system that includes a water connection for the domestic water supply 8, an electrically controllable valve 9 and a feed line 10 to the caustic tub 4, which is routed via a dispensing bowl 11 from which the feed water (fresh water) transports the treatment agent into the tub 4 can.
  • a heating device 13 In the tub 4 there is a heating device 13.
  • the valve 9 as well the heating device 13 can be controlled by the program controller 12 as a function of a program flow chart.
  • a pressure sensor 15 is provided for measuring the hydrostatic pressure in the tub 4.
  • an aqueous liquid 6 from the tub 4 as a treatment container in the sense of the invention can be temporarily stored in the storage container 16 for further uses.
  • a stored aqueous liquid from one of the last rinse cycles which is particularly clean, can be used for wetting and washing laundry 7, for example.
  • the aqueous liquid 6 is conveyed back into the tub 4 via a return line 32 in which a storage pump 35 is located in this embodiment.
  • a return line 32 in which a storage pump 35 is located in this embodiment.
  • the in Fig. 1 There are two possible ways of doing this. In addition to a direct route via the supply line 10, there is also the possibility of conveying the temporarily stored aqueous liquid via the induction bowl 11 back into the tub 4 and into the drum 2 located therein.
  • the period of time in which laundry treatment is carried out in the drum 2 as a treatment method for objects is now used to generate and provide a solution containing oxidizing agent.
  • an ozone generator 20 is provided outside the storage container 16 and a plasma generator 33 is provided inside the storage container 16.
  • a further plasma generator 33 can also be located in the dispensing bowl 11 in the embodiment shown here.
  • the plasma generators 33 are used here to generate a cold atmospheric pressure plasma in air and are each located at a distance of 0.5 to 1.5 cm from an inner surface of the storage container and the dispensing bowl.
  • the oxidizing agent generator 20 is an ozone generator here.
  • the air required for the generation in the ozone generator 20 is sucked in from the installation room of the household appliance by means of a fan 19 through the supply air duct 30 for the oxidizing agent generator provided.
  • the ozone generated in the ozone generator 20 can be used in the in Fig. 1 Embodiment shown can be introduced as a gas in water which had been passed from the water supply 8 via the line 32 into the storage container 16.
  • an aqueous solution of ozone can already be generated in the area of the ozone generator 20 via a connection to the water supply 8 and passed as such into the storage container 16.
  • the plasma generator 33 comprises a first electrode made of copper, a dielectric made of polytetrafluoroethylene and a second electrode made of copper, not shown in detail here.
  • an aqueous solution containing ozone as the oxidizing agent is provided in the storage container 16. Since a lot of time can be available for the generation of ozone, an ozone generator with a relatively small capacity can also be used for the ozone generation.
  • An aqueous solution 6 used for a laundry treatment process in the tub 4 can now be transferred into the storage container 16 via a storage line 34 using a drain pump 22.
  • a relatively clean aqueous liquid for example from one of the wash cycles, is preferably used.
  • the load of dirt and detergents can be determined by a sensor 41 mounted in the tub for this purpose. It can be provided that an aqueous liquid 6 can only be transferred into the storage container 16 up to a maximum load with dirt and detergents.
  • the sensor 41 can also be used to regulate the generation and provision of an optimal amount of solution containing oxidizing agent.
  • a stirrer 42 is present in the storage container 16, which can bring about an intensive mixing of aqueous liquid 6 and solution containing oxidizing agent.
  • a display device 29 is located on the washing machine 1 of the special embodiment shown here for the acoustic and / or optical display of an ongoing generation of oxidizing agent and / or the removal of excess oxidizing agent.
  • an oxidizing agent supply line 36 can be used for the tub 4 in order to conduct ozone directly into the tub 4.
  • Fig. 2 is a schematic representation of the presently relevant parts of a second embodiment of a washing machine 1, in which a method to be explained in detail below can be carried out.
  • the washing machine 1 shown has a tub 4 in which a drum 2 is rotatably mounted about an essentially horizontal axis 3 and can be operated by a drive motor 14.
  • the arrow shows the direction of rotation of the drum.
  • Laundry carrier 39 and scooping devices 5 for the washing liquor 6 on the inner surface of the drum shell enable the washing through the laundry items 7 to be intensified and the free liquor to be reduced, i.e. the amount of washing liquor in the tub 4 which is no longer due to the laundry items 7 saturated with washing liquor can be included.
  • the washing machine 1 also has a lye feed system, which comprises a water connection fitting for the domestic water network 8, an electrically controllable valve 9 and a supply line 10 to the lye container 4, which is guided via a detergent dispensing device ("dispensing bowl") 11, from which the supply water is fed into detergent portions can transport the tub 4.
  • a lye feed system which comprises a water connection fitting for the domestic water network 8, an electrically controllable valve 9 and a supply line 10 to the lye container 4, which is guided via a detergent dispensing device (“dispensing bowl") 11, from which the supply water is fed into detergent portions can transport the tub 4.
  • an aqueous liquid 6 located in the tub 4 as a treatment container can be pumped by means of a tub 22 in a storage line 34 to the storage container 16 and temporarily stored there before further use.
  • the stored aqueous liquid 6 can reach the supply line 10 and then back into the tub 4 by means of a storage pump 35 via the return line 32.
  • a container 38 for the solution of an oxidizing agent is connected to the storage container 16.
  • the container 38 is connected via an ozone supply line 25 to an ozone generator 20 as an oxidizing agent generator, so that the container 38 contains ozone here, preferably in an aqueous solution, the water in the container 38 being provided in a manner not shown here.
  • a distribution node 40 which regulates the supply of air containing ozone to a venturi nozzle 26 and to the container 38 for an aqueous liquid containing ozone as an oxidizing agent.
  • a Venturi nozzle 26 in the supply line 10, which is connected via an ozone supply line 25 to the ozone generator 20 as an oxidizing agent generator.
  • the venturi nozzle 26 the water flowing in the supply line 10 from the domestic water network 8 sucks in air containing ozone which is located in the ozone supply line 25.
  • ozone reaches the tub 4 together with water or wash liquor.
  • the tub wall 21 there is an inlet 37 into the exhaust air duct 17, in which an ozone removal device 18, an ozone sensor 31 and a fan 19 are located.
  • the exhaust air duct 17 leads to an exhaust air outlet 23, which here protrudes into an installation room for the washing machine.
  • an aqueous liquid 6 located therein preferably a less contaminated rinsing liquid from one of the last wash cycles, is pumped in the storage line 34 by means of a drain pump 22 into the storage container 16.
  • the aqueous liquid 6 is pumped from the storage container 16 back into the tub 4 using a storage pump 35.
  • an aqueous liquid 6 can also be circulated between the tub 4 and the storage container 16.
  • ozone-containing air can be sucked in by the ozone generator 20 through the Venturi nozzle 26 and fed to the aqueous liquid 6 in the tub 4.
  • an ozone-containing solution from the container 38 can be added to this circuit, preferably discontinuously.
  • a filter unit 28 which here contains activated carbon as a carbon-containing material.
  • a sight glass 27 is arranged on the ozone removal device 18, through which a user of the washing machine can see whether there is still material containing carbon in the filter unit 28.
  • a display device 29 is located on the washing machine of the embodiment shown here for the acoustic and / or optical display of the treatment of the aqueous liquid with ozone and / or an improperly functioning removal of ozone.
  • a supply air duct 30 for the ozone generator 20 branches off on a pitot tube 24 between the fan 19 and the exhaust air outlet 23.
  • the fan 19 can be used both for operating the ozone generator 20 and for operating the ozone removal device 18 at the same time.
  • valve 9 in the tub 4.
  • the valve 9 as well as the heater 13 can be controlled by a control device 12 which generally takes into account a time program and / or the achievement of certain measured values of parameters such as lye level, lye temperature, drum speed, etc. within the washing machine 1.
  • Fig. 2 15 means a pressure sensor for measuring the hydrostatic pressure in the tub 4, which is derived from the filling level of the tub 4 free fleet results.
  • the signals from the drive motor 14, pressure sensor 15, ozone generator 20, fan 19, ozone sensor 31, etc. are fed to the control device 12, even if this is not shown in each case for reasons of clarity.
  • an aqueous liquid 6 from the tub 4 can also be temporarily stored as a treatment container in the storage container 16 for further uses.
  • the aqueous liquid 6 is conveyed back into the tub 4 via a return line 32 in which a storage pump 35 is located in this embodiment.
  • the temporarily stored aqueous liquid 6 can also be conveyed via the induction bowl 11 back into the tub 4 and into the drum 2 located therein.
  • an oxidizing agent supply line 36 can be used for the tub 4 in order to conduct ozone directly into the tub 4.
  • the oxidizing agent generator 20 is an ozone generator here.
  • the air required for the generation in the ozone generator 20 is provided by suction from the installation room of the household appliance by means of a fan 19 through the supply air duct 30 for the oxidizing agent generator.
  • the ozone generated in the ozone generator 20 can be used in the in Fig. 3 Embodiment shown can be introduced as a gas in water which had been passed from the water supply 8 via the line 32 into the storage container 16. However, an aqueous solution of ozone can already be generated in the area of the ozone generator 20 via a connection with the water supply 8 and passed as such into the storage container 16.
  • a solution containing oxidizing agent here ozone
  • a solution containing oxidizing agent here ozone
  • aqueous solution from the storage container 16 to disinfect it.
  • the generation and provision of oxidizing agent can additionally be supported by the use of plasma generators 33, which in the third embodiment of a household appliance shown here are each present in the dispensing bowl 11, the container 38 for storing a solution containing oxidizing agent and the storage container 16.
  • the plasma generator 33 comprises a first electrode made of copper, a dielectric made of polytetrafluoroethylene and a second electrode made of copper, not shown in detail here.
  • the plasma generators 33 are used here to generate a cold atmospheric pressure plasma in air and are each located at a distance of 0.5 to 1.5 cm from an inner surface of the storage container, the container and the induction bowl.
  • an aqueous solution containing ozone as an oxidizing agent is provided in the storage container 16 and / or in the container 38. Since a lot of time can be available for the generation of ozone, an ozone generator with a relatively small capacity can also be used for the ozone generation.
  • An aqueous solution 6 used for a laundry treatment process in the tub 4 can be transferred into the storage container 16 via a storage line 34 using a drain pump 22.
  • a relatively clean aqueous liquid for example from one of the wash cycles, is preferably used for this purpose.
  • the loading of dirt and detergents can be determined by a sensor 41 mounted in the tub for this purpose, which can also cause an aqueous liquid 6 to be transferred into the storage container 16 only up to a maximum load with dirt and detergents.
  • the sensor 41 can also be used to regulate the generation and provision of an optimal amount of solution containing oxidizing agent.
  • a stirrer 42 is present in the storage container 16 for intensive mixing of the aqueous liquid 6 and the solution containing oxidizing agent.
  • a display device 29 enables an acoustic and / or optical display of an ongoing generation of oxidizing agent and / or the removal of excess oxidizing agent.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Oxygen, Ozone, And Oxides In General (AREA)

Claims (14)

  1. Procédé de fonctionnement d'un appareil ménager (1) comprenant une cuve de traitement (2, 4) pour le logement d'objets (7) à traiter, un dispositif de commande (12), une cuve de stockage (16) pour un liquide aqueux (6), au moins une pompe (22, 35) pour le transport du liquide aqueux (6) entre la cuve de stockage (16) et la cuve de traitement (2, 4), et un générateur d'agent oxydant (20) qui est relié à une cuve séparée (38) destinée au stockage d'une solution aqueuse d'agent oxydant qui a été généré dans le générateur d'agent oxydant (20),
    comprenant une réalisation se chevauchant temporellement des étapes :
    (a) réalisation d'un programme de traitement avec les objets (7) dans la cuve de traitement (2, 4) ;
    (b)génération d'un agent oxydant dans le générateur d'agent oxydant (20) ; et
    (c) transfert dans la cuve et mise à disposition de l'agent oxydant dans la cuve (38),
    les étapes (a) et (b) étant commencées simultanément.
  2. Procédé selon la revendication 1, caractérisé en ce que l'étape (b) est réalisée au moins pendant la réalisation de l'étape (a).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que l'étape (b) est réalisée après l'achèvement de l'étape (a) pour une période de temps Δt prédéfinie.
  4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que pendant et/ou après la réalisation du programme de traitement (a), un liquide aqueux (6) utilisé dans la cuve de traitement (2, 4) est mis en contact avec la solution d'agent oxydant mise à disposition dans la cuve (38).
  5. Procédé selon la revendication 4, caractérisé en ce que la mise en contact est intensifiée en raison de l'utilisation d'un dispositif mélangeur (42).
  6. Procédé selon l'une quelconque des revendications 4 ou 5, caractérisé en ce que le liquide aqueux (6) est un liquide de rinçage et/ou un liquide de lavage.
  7. Procédé selon l'une quelconque des revendications 1 à 6, caractérisé en ce qu'une solution contenant un agent oxydant est mise en contact avec un liquide aqueux (6) transporté dans la cuve de stockage (16).
  8. Procédé selon la revendication 7, caractérisé en ce que le mélange résultant est transporté en retour dans la cuve de traitement (4).
  9. Procédé selon l'une quelconque des revendications 1 à 8, caractérisé en ce que l'agent oxydant est de l'ozone.
  10. Appareil ménager (1) comprenant une cuve de traitement (2, 4) pour le logement d'objets (7) à traiter, un dispositif de commande (12), une cuve de stockage (16) pour un liquide aqueux (6), au moins une pompe (22, 35) pour le transport du liquide aqueux (6) entre la cuve de stockage (16) et la cuve de traitement (2, 4), et un générateur de produit oxydant (20),
    dans lequel le générateur d'agent oxydant (20) est relié à une cuve séparée (38) destinée au stockage d'une solution aqueuse d'agent oxydant qui a été généré dans le générateur d'agent oxydant (20), et dans lequel l'appareil ménager (1) est configuré pour réaliser un procédé, comprenant une réalisation se chevauchant temporellement des étapes :
    (a) réalisation d'un programme de traitement avec les objets (7) dans la cuve de traitement (2, 4) ;
    (b) génération d'un agent oxydant dans le générateur d'agent oxydant (20) ; et
    (c) transfert dans la cuve et mise à disposition de l'agent oxydant dans la cuve (38),
    les étapes (a) et (b) étant commencées simultanément.
  11. Appareil ménager (1) selon la revendication 10, caractérisé en ce que le générateur d'agent oxydant (20) est un générateur d'ozone.
  12. Appareil ménager (1) selon l'une quelconque des revendications 10 à 11, caractérisé en ce qu'une pompe de liquide de lavage (22) et une pompe de stockage (35) sont utilisées en tant qu'au moins une pompe (22, 35) de transport d'un liquide aqueux (6) entre la cuve de stockage (32) et la cuve de traitement (1).
  13. Appareil ménager (1) selon l'une quelconque des revendications 10 à 12, caractérisé en ce qu'il comprend un dispositif d'élimination d'agent oxydant (18, 28).
  14. Appareil ménager (1) selon l'une quelconque des revendications 10 à 12, caractérisé en ce que l'appareil ménager (1) est un lave-linge, un lave-linge séchant ou un lave-vaisselle.
EP12812577.0A 2011-12-21 2012-12-17 Procédé de fonctionnement d'un appareil ménager comprenant un réservoir accumulateur et un générateur de moyen d'oxydation, et appareil ménager correspondant Active EP2794976B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011089386A DE102011089386A1 (de) 2011-12-21 2011-12-21 Verfahren zum Betrieb eines Hausgeräts mit einem Speicherbehälter und einem Oxidationsmittelgenerator sowie hierfür geeignetes Hausgerät
PCT/EP2012/075790 WO2013092488A1 (fr) 2011-12-21 2012-12-17 Procédé de fonctionnement d'un appareil ménager comprenant un réservoir accumulateur et un générateur de moyen d'oxydation, et appareil ménager correspondant

Publications (2)

Publication Number Publication Date
EP2794976A1 EP2794976A1 (fr) 2014-10-29
EP2794976B1 true EP2794976B1 (fr) 2021-02-17

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Country Status (5)

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EP (1) EP2794976B1 (fr)
CN (1) CN104204330B (fr)
DE (1) DE102011089386A1 (fr)
IN (1) IN2014KN01070A (fr)
WO (1) WO2013092488A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013224520B4 (de) * 2013-11-29 2020-06-25 BSH Hausgeräte GmbH Wasserführendes Haushaltsgerät mit einem Speicherbehälter zur Speicherung von Grauwasser
DE102014220355B3 (de) * 2014-10-08 2016-01-21 BSH Hausgeräte GmbH Wäschepflegegerät mit einer Ozonerzeugungseinrichtung
EP3415069A1 (fr) * 2017-06-16 2018-12-19 Sanhua AWECO Appliance Systems GmbH Eau activée par plasma pour désinfecter des appareils domestiques
WO2021014035A1 (fr) * 2019-07-19 2021-01-28 Lopar Factory, S.L. Dispositif pour le traitement de l'eau
IT201900019436A1 (it) 2019-10-21 2021-04-21 Tonello Srl Apparecchiatura di decolorazione o trattamento di manufatti, quali, ad esempio, capi di abbigliamento
ES1287427Y (es) * 2022-01-25 2022-05-23 Lopar Factory S L Sistema para el tratamiento de agua/aire para el sector de la agricultura e industrial.

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DE3232057A1 (de) 1982-08-28 1984-03-01 Rudolf 3501 Schauenburg Gesslauer Reinigungsmaschine fuer waesche, geschirr od. dgl.
US5493743A (en) 1994-07-22 1996-02-27 Tri-O-Clean Laundry, Inc. Ozone assisted laundry wash process and waste water treatment system
US5960649A (en) 1998-09-15 1999-10-05 Envirocleanse Systems, Inc. Ozonated laundry system including adapter and sparging rod
CN2617367Y (zh) * 2003-05-14 2004-05-26 郑汉平 一种臭氧水消毒洗涤机
DE10360906A1 (de) 2003-12-23 2005-07-28 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine zur Verwendung von Ozon
GB2414023B (en) * 2004-05-11 2008-04-09 Jla Ltd Washing machine, ozone dissolving apparatus and method of washing
DE102005004091A1 (de) * 2004-12-09 2006-06-22 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine mit Ozonspeicher
JP2007181603A (ja) * 2006-01-10 2007-07-19 Sanyo Electric Co Ltd 洗濯機およびオゾン発生装置
JP4711839B2 (ja) 2006-01-30 2011-06-29 三洋電機株式会社 洗濯機
AU2006202541A1 (en) 2006-06-15 2008-01-10 Ozone Technologies Pty Limited System and Device for Introducing Ozone into a Washing Apparatus
EP2126181B1 (fr) 2007-03-29 2011-08-17 Arçelik Anonim Sirketi Lave-linge
DE102009026827A1 (de) * 2009-06-08 2010-12-09 BSH Bosch und Siemens Hausgeräte GmbH Hausgerät mit einem Ozongenerator und einer Ozonbeseitigungsvorrichtung
DE102010027795A1 (de) * 2010-04-15 2011-10-20 BSH Bosch und Siemens Hausgeräte GmbH Hausgerät mit Plasmagenerator und Verfahren zu seinem Betrieb
EP2390398A1 (fr) * 2011-07-12 2011-11-30 V-Zug AG Appareil ménager avec dispositif de traitement de l'eau pour le traitement de l'eau de processus à stocker

Also Published As

Publication number Publication date
EP2794976A1 (fr) 2014-10-29
CN104204330A (zh) 2014-12-10
DE102011089386A1 (de) 2013-06-27
WO2013092488A1 (fr) 2013-06-27
CN104204330B (zh) 2016-09-14
IN2014KN01070A (fr) 2015-10-09

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