EP2563963A1 - Verfahren zum erkennen eines betriebszustands in einem hausgerät und hierfür geeignetes hausgerät - Google Patents
Verfahren zum erkennen eines betriebszustands in einem hausgerät und hierfür geeignetes hausgerätInfo
- Publication number
- EP2563963A1 EP2563963A1 EP11711935A EP11711935A EP2563963A1 EP 2563963 A1 EP2563963 A1 EP 2563963A1 EP 11711935 A EP11711935 A EP 11711935A EP 11711935 A EP11711935 A EP 11711935A EP 2563963 A1 EP2563963 A1 EP 2563963A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ozone
- domestic appliance
- hygiene
- sensor
- concentration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 71
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 342
- 230000007423 decrease Effects 0.000 claims abstract description 18
- 238000005406 washing Methods 0.000 claims description 40
- 239000007788 liquid Substances 0.000 claims description 26
- 238000000354 decomposition reaction Methods 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 12
- 239000000126 substance Substances 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 2
- 230000009467 reduction Effects 0.000 claims description 2
- 230000002123 temporal effect Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 34
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 23
- 239000007789 gas Substances 0.000 description 19
- 230000008569 process Effects 0.000 description 14
- 239000000463 material Substances 0.000 description 10
- 238000005259 measurement Methods 0.000 description 10
- 244000005700 microbiome Species 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 5
- 239000003599 detergent Substances 0.000 description 5
- 238000011049 filling Methods 0.000 description 5
- 229910003437 indium oxide Inorganic materials 0.000 description 5
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 229920000412 polyarylene Polymers 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000975 bioactive effect Effects 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002170 ethers Chemical class 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000011946 reduction process Methods 0.000 description 2
- 238000005201 scrubbing Methods 0.000 description 2
- 150000003568 thioethers Chemical class 0.000 description 2
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- 208000026935 allergic disease Diseases 0.000 description 1
- 230000007815 allergy Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000032770 biofilm formation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 210000003097 mucus Anatomy 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
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- 239000002516 radical scavenger Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C7/00—Stoves or ranges heated by electric energy
- F24C7/08—Arrangement or mounting of control or safety devices
-
- 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
- A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
- A47L15/0057—Cleaning of machines parts, e.g. removal of deposits like lime scale or proteins from piping or tub
-
- 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
- A47L15/4236—Arrangements to sterilize or disinfect dishes or washing liquids
- A47L15/424—Arrangements to sterilize or disinfect dishes or washing liquids by using ozone
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- 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
- A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
- A47L2401/34—Other automatic detections
-
- 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
- A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
- A47L2501/26—Indication or alarm to the controlling device or to the user
-
- 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
- A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
- A47L2501/34—Change machine operation from normal operational mode into special mode, e.g. service mode, resin regeneration mode, sterilizing mode, steam mode, odour eliminating mode or special cleaning mode to clean the hydraulic circuit
-
- 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
- A47L2601/00—Washing methods characterised by the use of a particular treatment
- A47L2601/08—Ozone
-
- 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
- D06F2103/16—Washing liquid temperature
-
- 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
- D06F2103/64—Radiation, e.g. microwaves
- D06F2103/66—Radiation, e.g. microwaves for treatment of laundry otherwise than by drying, e.g. using UV light
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/58—Indications or alarms to the control system or to the user
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/58—Indications or alarms to the control system or to the user
- D06F2105/60—Audible signals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/042—Air treating means within refrigerated spaces
Definitions
- the invention relates to a method for detecting an operating state in a household appliance with a control device, a device for providing ozone and at least one ozone sensor, as well as a household appliance particularly suitable for this purpose.
- Biofilms contain immobilized bacteria embedded in a polymer matrix of microbial origin and, in addition to cells of such microorganisms, may contain abiotic and inorganic components in greater amounts, all being held together by mucus formed by bacteria.
- the water content is relatively high with generally 80 to 95% of the moisture content.
- a special hygiene program is sometimes activated in which, for example, using steam and / or provided with bioactive additives liquids or gases cleaning of the relevant parts of the household appliance is performed.
- Ozone is not just a powerful disinfectant; it also, in conjunction with a care or cleaning agent applied in a household appliance, causes complex and rapid reactions leading to improved care. or cleaning effect.
- the use of ozone for hygiene programs is therefore becoming increasingly popular.
- WO 2007/143785 A1 describes a system and apparatus for introducing ozone into a washing machine.
- the system includes a first conduit for introducing ozone from an ozone supply into a scrubbing liquid inlet and a second conduit for discharging ozone into an area above a scrubbing chamber.
- a Venturi nozzle is used for introducing ozone and for mixing with a washing liquid.
- a washing machine is described in which in a detergent dispenser, i. a Ein Hughesschale, existing microorganisms are eliminated by direct introduction of ozone from an ozone generator in the Ein effetschale.
- water is added simultaneously to the ozone in the dispenser tray so that the ozone / water mixture is passed through the dispenser tray. This is intended to minimize the possibility of escape of ozone from the washing machine.
- US 2008/0302139 A1 discloses a tunnel washer comprising a plurality of zones for washing laundry in a continuous manner, two locations for injecting ozone, a water circuit connecting a water inlet and a water outlet, the water circuit comprising a water reservoir and a venturi injector for dissolving ozone in water and an ozone generator.
- a negative pressure or vacuum may be applied to the tunnel washer via an ozone eliminator to prevent leakage of ozone.
- a blower can be used for the generation of the negative pressure. Excess or leaking ozone can be catalytically converted back to normal oxygen in the ozone removing device.
- DE 24 33 909 A1 describes a device for the care of garments with a closable with a door closable housing with a receiving space for garments to which the suction and Ausblasseite a recirculation fan are connected with the interposition of an air heater, wherein the receiving space via a fresh air filter the outside space communicates and the suction side of an exhaust fan is connected to the receiving space while its exhaust ends in an opening of an outer wall of the housing. At least one ozonizer is provided for the air of the receiving space.
- the outlet of the exhaust fan is connected to the outside space, wherein disposed in the exhaust path an exhaust filter whose filter material consists of activated carbon
- the hygiene programs are not optimally adapted to the hygienic needs of home appliances, since the time, duration and intensity of the measures carried out in a hygiene program are not adjusted to the actual hygiene status in the domestic appliance. It would therefore be desirable to obtain qualitative and in particular quantitative information about the hygiene state of the household appliance.
- DE 102 37 854 A1 describes a method for operating a water-conducting device, wherein at least in a partial program step, the degree of contamination of the cleaning liquid by means of a wet combustion and a determination of the degree of combustion is determined.
- a predetermined amount of ozone is introduced, conducted in and out of a subset of the cleaning fluid, and the amount of ozone discharged is measured and compared with the amount of ozone introduced.
- DE 102 37 853 A1 describes a method for measuring the amount of organic substances in a liquid, in which the amount of organic substances in the liquid is determined by means of a wet combustion and a determination of the degree of combustion. For this purpose, a predetermined amount of ozone in a subset of the liquid on, by and discharged and measured by at least one arranged sensor, the amount of ozone discharged and compared with the amount of ozone introduced.
- US 2005/0268404 A1 describes a washing machine with an ozone inlet for a laundry receiving space ("washroom") and with an ozone outlet for receiving ozone from the washroom, wherein the washing machine has an ozone sensor for measuring the ozone at the ozone exit
- the amount of ozone used can be better controlled, because the ozone depletion can be different for different loadings of laundry, so that it is difficult to determine the amount of ozone required for this, without disadvantageously using too much or too little ozone
- Preferred embodiments of the invention are listed in the respective dependent claims. Preferred embodiments of the domestic appliance according to the invention correspond to preferred embodiments of the method according to the invention, even if it is not separately pointed out here.
- the invention thus teaches a method for detecting an operating state in a household appliance with a control device, a device for providing ozone and at least one ozone sensor, wherein a hygiene state of the domestic appliance is determined by means of the ozone sensor, the time reduction of provided in the home appliance ozone as Measure of hygiene status is measured.
- the device for providing ozone may in particular be an ozone generator or else an opening or a buffer for an ozone-containing gas mixture or an ozone-containing liquid.
- At least one inner component of the domestic appliance is charged with a quantity of M o to ozone and the Decrease ⁇ of the amount M-o of ozone after a predetermined time t set measured with an ozone sensor (b) and / or an ozone sensor (c) and evaluated to determine a hygiene parameter H as a measure of the hygiene state.
- ozone sensor (a) ozone sensor (b)
- ozone sensor (c) ozone sensor (d)
- ozone sensor (d) ozone sensor
- an inner component comprehensively means any part within a domestic appliance that may be subject to deposition of microorganisms or even biofilm formation
- an inner component is a cavity of a domestic appliance, wherein the domestic appliance may have a plurality of cavities the method according to the invention can be carried out individually or together, and the type and size of the cavity (hereinafter also referred to as “cavity to be examined”) will depend on the domestic appliance.
- Typical cavities in the sense of the invention are in a washing machine an induction bowl, a tub and a laundry drum, in an electric oven, a cooking chamber, a tumble dryer also a laundry drum, a heat exchanger and a condensate tank, a dishwasher in a dishwasher and a cooling unit a cooling or freezer.
- the cavities in the context of this invention also include the pipes, hoses, etc. connecting the above-described cavities.
- a predetermined concentration c set of ozone is set in a given cavity of the domestic appliance and an ozone sensor in this cavity (c) measured time decrease of the concentration c of ozone for the determination of a hygiene parameter H sta t evaluated as a measure of the hygiene state.
- a predetermined concentration c set is adjusted to ozone
- the hygiene parameter H sta t is preferably the half-life t 0 5 of the concentration of ozone, corrected for the natural decomposition of ozone, used.
- the half-life t 0 5 is preferably determined by the measurement of a decay constant ⁇ , which is then also corrected with regard to the natural decomposition of the ozone.
- the measuring time used in the method according to the invention can vary within a wide range. In general, the measurement time is well below the half-life t 0 .5.
- a concentration c in at ozone is specified at an entrance to a cavity of the domestic appliance
- an ozone-containing gas mixture or an ozone-containing liquid of unknown concentration of ozone is brought to the inlet and first with the ozone sensor (c) the concentration c in of ozone is measured.
- a hygiene program is carried out and / or a lack of hygiene is displayed on the domestic appliance.
- a hygiene program cleaning of the relevant parts of the domestic appliance with liquids and gases containing steam and / or bioactive additives is generally carried out. If ozone is used in the context of a hygiene program, the amounts of ozone used in this case will generally be greater than in the method according to the invention for detecting an operating state.
- the predetermined value H set will generally depend on the details of the performed method according to the invention. In addition, different component-specific values for H set can also be specified for various internal components of a domestic appliance.
- the at least one ozone sensor used in the method according to the invention can be based on different measuring principles, whereby different measuring principles can also be used in a domestic appliance.
- the ozone sensor (a), ozone sensor (b), ozone sensor (c) and / or ozone sensor (d) can determine an ozone concentration by the action of ozone on a substance located in the ozone sensor whose electrical resistance reversibly changed.
- indium oxide can be used as such a material.
- Indium oxide changes its resistance due to oxidation with ozone, but can be regenerated in a simple and rapid manner by means of a cold photochemical reduction process.
- the electrical resistance of a 15 nm thick indium oxide layer changes by oxidation in proportion to the ozone concentration.
- the indium oxide layer can be applied, for example, on the back of a violet light emitting diode (LED). When the LED is switched on, the oxidized indium oxide layer - and thus the ozone sensor - is regenerated by a cold photochemical reduction process.
- LED violet light emitting diode
- the invention also relates to a domestic appliance with a control device, a device for providing ozone and at least one ozone sensor, wherein the control device is set up and means are provided to a method for detecting a hygiene state of the domestic appliance by measuring the time decrease of domestic appliance supplied ozone as a measure of the hygiene condition.
- a domestic appliance generally has a container for receiving objects to be treated. This can be, for example, in a dryer, washer-dryer or dryer a laundry drum, a cooker in a stove, a dishwasher in a dishwasher or a refrigerator a refrigerator or freezer.
- the aforementioned means are in particular one or more ozone sensors, at least one pump or a fan for setting a desired flow of an ozone-containing air or an ozone-containing gas, an ozone removal device and / or various controllable closure devices, with which a cavity to be examined can be defined.
- the device for providing ozone may in particular be an ozone generator or else an opening or a buffer for an ozone-containing gas mixture or an ozone-containing liquid.
- a per se known ozone generator is used.
- the ozone can be used as gas or in aqueous solution.
- ozone is used as the gas.
- an ozone sensor (c) is arranged in a cavity of the domestic appliance to be examined and through which the gas or liquid can flow.
- an ozone sensor (b) is arranged downstream of a cavity to be examined in the flow direction of an ozone-containing gas or an ozone-containing liquid.
- an ozone sensor (a) is arranged in the flow direction of the ozone-containing gas or the ozone-containing liquid in front of the cavity to be examined. This allows accurate measurement even without accurate knowledge of the ozone concentration present in the ozone providing device.
- the ozone sensor according to the invention is not limited, as long as it can be used in a domestic appliance.
- an ozone sensor comprises a substance which is converted into volatile compounds by reaction with ozone and thereby undergoes a mass loss which can be used to quantitatively measure the amount of ozone present.
- the substance can be examined gravimetrically.
- the ozone sensor comprises a substance that changes its electrical resistance due to the action of ozone.
- a substance that changes its electrical resistance due to the action of ozone is given above.
- the domestic appliance according to the invention is not particularly limited.
- the household appliance is preferably a washing machine, a washer-dryer, a tumble dryer, a dishwasher, an oven or a refrigerator (refrigerator, freezer). More preferably, the domestic appliance is a domestic appliance that carries water and / or moist air during its operation.
- the cavity can be, for example, the space between an inlet to the laundry drum and an outlet of a heat exchanger, e.g. an air-to-air heat exchanger.
- the domestic appliance preferably has an ozone removing device and a fan and / or a suction pump, which can draw an ozone-containing gas mixture or an ozone-containing liquid through the ozone removing device.
- the ozone removal device and a fan and / or a suction pump may be arranged in an exhaust duct, which exhaust duct is connected to the ozone-loaded inner components of the domestic appliance.
- the ozone removing device is disposed between the inner component and the fan and / or the suction pump.
- ozone is eliminated by being absorbed or decomposed on a suitable material.
- the decomposition can For example, done by the fact that the ozone is chemically reacted with a suitable material or catalytically decomposed, for example, to form oxygen.
- an ozone removing device comprises a filter unit, wherein the filter unit preferably comprises a carbon-containing material or another readily oxidizable material.
- the carbon-containing material is at least one substance selected from the group consisting of activated carbon, polyarylene thioethers, polyarylene ethers and macroporous copolymers. Suitable polyarylene thioethers, polyarylene ethers and macroporous copolymers are described, for example, in EP 0 699 470 A1.
- 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. This decrease can be tracked in a sight glass located at the ozone removing device. A user of the household appliance can then possibly recognize whether the filter unit is still working properly, for example, by still enough activated carbon is present.
- a preferably used in a domestic appliance according to the invention ozone generator generates about 20 mg / h to 30 mg / h of ozone.
- the use of a filter unit which is loaded with about 10 g of activated carbon, sufficient for the entire operating life of the household appliance.
- the exhaust duct can lead into an installation room of the domestic appliance, since the exhaust air contains only small amounts of carbon dioxide and no other interfering components.
- an ozone removing device may alternatively or in addition to a filter unit comprise a catalyst for the decomposition of ozone, for example a catalyst for the conversion of ozone into oxygen.
- the household appliance preferably has an optical and / or acoustic display device, with which the implementation of an occurring method according to the invention and / or a result of this method can be displayed.
- the exceeding of a hygiene parameter H set could be indicated acoustically and / or visually.
- a control device which, in addition to the control of the method according to the invention, can generally also take countermeasures in the event of a malfunctioning removal of ozone.
- the control device can turn off an existing ozone generator in a domestic appliance and / or cause a corresponding acoustic and / or visual display on a display device in a non-functioning ozone removal.
- a pressure sensor and / or a temperature sensor are arranged in the tub.
- Pressure and temperature sensor if present, are preferably arranged in a lower region of the tub, so that pressure and / or temperature of an aqueous liquid present in the tub can be measured.
- a washing machine generally has a tub as well as a rotatable in the tub, preferably horizontally rotatable, mounted drum for receiving laundry to be cleaned.
- a washing machine generally also has a lye drainage system arranged at the bottom of the lye container with a drain pump and generally also laundry hoppers and / or scooping devices.
- the invention has the advantage that it is possible in a simple and efficient manner to determine the hygiene state of household appliances. This is possible according to the invention by using device components which are already present in a domestic appliance in which ozone is used (ozone generator, ozone removal system, pump, ozone sensor).
- the method according to the invention makes it possible to provide improved hygiene programs, in particular for improving a detected hygiene value, wherein, in addition, the type, duration, intensity and frequency of use can be optimized on the basis of the hygiene values obtained according to the invention.
- This will become a general one Improved hygiene of the household appliance achieved, which can also be specifically improved for special user groups such as allergy sufferers.
- FIGS. 1 to 3 of the accompanying drawings two washing machines and a dryer being cited as examples of household appliances according to the invention:
- Fig. 1 is a schematic representation of the presently relevant parts of a first embodiment of the domestic appliance according to the invention, which is designed here as a washing machine.
- Fig. 2 is a schematic representation of the presently relevant parts of a second embodiment of the domestic appliance according to the invention, which is also designed as a washing machine.
- FIG. 3 shows a vertical section through a domestic appliance, which according to a third embodiment of the invention is designed as a tumble dryer ("dryer") in which heat is recovered by means of an air-air heat exchanger present explanation relevant parts of a first embodiment of a domestic appliance 1, which is designed here as a washing machine, in which a method to be explained below can be performed horizontal axis of rotation 49 rotatably supported and can be operated by a drive motor 14.
- the arrow here indicates the direction of rotation of the drum 3.
- Wäschemitivity 34 and 5 Schmüinraumen for the wash liquor 6 are present.
- the washing machine 1 also has a water inlet system, which in a water supply 8 arranged a water connection fitting, not shown here for the domestic water network, an electrically controllable valve 9 and a Waschstoffein Whynd ("Ein Stammschale") 1 1.
- the water coming via the water supply line 8 can be transported via the dispenser 1 1 there detergent portions via the connecting tube 10 in the tub 2.
- ozone supply line 25 which is connected to an ozone generator 32.
- the ozone generator 32 30 air is supplied in a supply air duct.
- the ozone-containing air contained in the water supply line 8 in the ozone supply line 25 from the domestic water network can be mixed in particular by utilizing the Venturi effect.
- ozone can get into the dispenser 1 1 and then into the tub 2 together with water.
- ozone may also be introduced into the tub 2 as a gas, in particular as part of an ozone-containing gas mixture such as air.
- an ozone sensor (a) 16 is arranged, with the aid of which in the embodiment shown here at a set by means of a suction pump 21 flow velocity v set a concentration c in ozone in front of the dispenser 1 1 can be measured as the reference value for a subsequent decrease in ozone concentration.
- the position of ozone sensor (a) 16 is here considered as an input to the dispenser 1 1 as a cavity according to the invention.
- suction pump 21 can suck ozone-containing air from the dispenser 1, the tub 2 and the drum 3.
- the dispenser 1 1 is connected via a connecting tube (filling hose) 10 with the tub 2.
- the dispenser 1 1 is connected via a first exhaust air duct 18 and the tub 2 via a second exhaust air duct 19 with an exhaust duct 17.
- First exhaust air duct 18 and second exhaust air duct 19 thus form the connecting pipe 10 between the dispenser 1 1 and the tub 2.
- Ozone-containing air or ozone-containing aqueous liquid from the ozone generator 32 can pass through the dispenser 1 1 in the tub 2, the drum 3 and the connecting tube 10 connecting them.
- located microorganisms that may be present as biofilms are attacked by the ozone. Through these reactions the content of ozone in the air or in the aqueous liquid decreases beyond the extent due to the natural decomposition of the ozone.
- the means of an ozone sensor (b) 27 determined concentration c ou t of ozone can be used to determine the decrease in ozone concentration due to these processes.
- the position of the ozone sensor (b) 27 is hereby regarded as the exit from the cavity to be examined.
- the concentration difference Ac c in - c ou t - Ac dec , where Ac dec is a measure of the natural decomposition of ozone Determination of a hygiene parameter H dyn evaluated.
- the method to be explained here refers here only to the dispenser 1 as an inner component or cavity, since ozone-containing air in this embodiment will not get into the tub 2.
- the first embodiment shown here also illustrates a second possibility for a specific determination of the hygiene state of the dispenser 1 1.
- an ozone sensor (c) 24 is arranged in the dispenser 1 1 as a predetermined cavity. It can now be set in the Ein réelleschale 1 1 by introducing a known amount or concentration of ozone, a predetermined concentration c set of ozone.
- an ozone concentration initially determined by the ozone sensor (c) 24 can also be assumed to be c set , which represents a reference point for the method to be explained here.
- a hygiene parameter H stat as a measure of the hygiene state in the dispensing dish
- the time decrease of the concentration c of ozone measured with the ozone sensor (c) 24 is evaluated.
- the half-life t 0 5 of the concentration of ozone corrected for the natural decomposition of the ozone is used as the hygiene parameter.
- the ozone-containing air sucked in by the induction bowl 1 1 and the tub 2 by means of the suction pump 21 finally reaches an ozone removal device 20 and the clean air via an exhaust outlet 22 into the installation space of the washing machine 1 to remove excess ozone.
- the suction pump 21 is for this purpose arranged in the exhaust duct 17 between the ozone removing device 20 and the exhaust air outlet 22.
- a filter unit 28 which contains activated carbon as a carbon-containing material in the presently described embodiment.
- An ozone sensor (d) 31 for measuring an ozone content is disposed between the ozone removing device 20 and the suction pump 21. A proper functioning of the ozone removing device 20 is present when the ozone sensor (d) 31 can detect no or only extremely small amounts of ozone.
- a display device 29 is located on the washing machine 1 of the specific embodiment shown here.
- a heater 13 in the tub 2 embodiments without heating there is a heater 13 in the tub 2 embodiments without heating, however, are conceivable.
- the valve 9 as well as the heater 13 may be controlled by a controller 12 in response to a schedule corresponding to a time schedule and / or to the achievement of certain measurements of parameters such as liquor level, liquor temperature, drum speed, etc. within the range Washing machine can be tied.
- the signals from the drive motor 14, pressure sensor 15, ozone generator 32, suction pump 21, ozone sensor (a) 16, ozone sensor (b) 27, ozone sensor (c) 24 and ozone sensor (d) 31 are fed to the controller 12, although for reasons the clarity is not shown in each case.
- 15 is a pressure sensor for the measurement of the hydrostatic pressure p in the tub 2, resulting from the level of forming in the tub 2 free liquor.
- drum 3 laundry items 7 and 6 are indicated to illustrate the washing machine.
- laundry items 7 and 6 are indicated to illustrate the washing machine.
- Fig. 2 is an illustration of the parts relevant to the present explanation of a second embodiment of a washing machine 1, in which a method to be explained below can be performed.
- the washing machine 1 shown in Fig. 2 comprises a tub 2, in which a drum 3 rotatably supported about a horizontal axis of rotation 49 and can be operated by a drive motor 14.
- the arrow indicates here the direction of rotation of the drum 3.
- Wäschemitivity 34 and 5 Schmüinraumen 5 for the wash liquor 6 are on the inner surface of the drum shell available.
- the dispenser 1 1 is connected via a connecting tube (filling hose) 10 with the tub 2.
- the dispenser 1 1 is connected via a first exhaust air duct 18 and the tub 2 via a second exhaust air duct 19 with an exhaust duct 17.
- the first exhaust air duct 18 and the second exhaust air duct 19 do not form the connecting pipe 10 between the scavenger pan 11 and the tub 2.
- a first controllable closure device 33 e.g. Flaps.
- Ozone-containing air or ozone-containing aqueous liquid from the ozone generator 32 can pass through the dispenser 1 1 in the tub 2, the drum 3 and the connecting tube 10 connecting them.
- located microorganisms that may be present as biofilms are attacked by the ozone.
- the means of an ozone sensor (b) 27 determined concentration c ou t of ozone can be used to determine the decrease in ozone concentration due to these processes.
- the position of the ozone sensor (b) 27 is hereby regarded as the exit from the cavity to be examined.
- the cavity to be examined may comprise the dispensing dish 11 or the tub 2.
- the suds container can be separated by means of the first controllable closure device 33 and a third controllable closure device 40.
- ozone-containing air flows with closed third controllable closure device 40 and opened first controllable closure device 33 through the dispensing shell 1 1 and the first exhaust air duct 18 in the exhaust duct 17.
- the method for determining the hygiene state on the tub 2 as an inner component Or refer to cavity, for example, ozone-containing air with open third controllable closure device 40 and closed first controllable closure device 33 through the tub 2 and the second exhaust air duct 19 into the exhaust duct 17 pass.
- ozone concentrations are measured by ozone sensor (a) 16 and ozone sensor (b) 27.
- the second embodiment shown here also allows a targeted determination of the hygiene state of the dispenser 1 1.
- an ozone sensor (c) 24 is arranged in the dispenser as a predetermined cavity. It can now be set in the Ein réelleschale 1 1 by introducing a known amount or concentration of ozone, a predetermined concentration c set of ozone. Alternatively, too an ozone concentration initially determined by the ozone sensor (c) 24 can be assumed to be c set , which represents a reference point for the method for determining the state of hygiene. In any case, to determine a hygiene parameter Hstat as a measure of the hygiene state in the dispensing dish, the time decrease of the concentration c of ozone measured with the ozone sensor (c) 24 is evaluated.
- the ozone-containing air sucked in by the induction bowl 1 1 and the tub 2 by means of the suction pump 21 finally reaches an ozone removal device 20 and the clean air via an exhaust outlet 22 into the installation space of the washing machine 1 to remove excess ozone.
- the suction pump 21 is for this purpose arranged in the exhaust duct 17 between the ozone removing device 20 and the exhaust air outlet 22.
- An ozone sensor (d) 31 for measuring an ozone content is disposed between the ozone removing device 20 and the suction pump 21. A proper functioning of the ozone removing device 20 is present when the ozone sensor (d) 31 can detect no or only extremely small amounts of ozone.
- valve 9 in the tub 2 embodiments without heating, however, are conceivable.
- the valve 9 as well as the heater 13 may be controlled by a controller 12 in accordance with a schedule associated with a timed program and / or the achievement of certain measurements of parameters such as liquor level, liquor temperature, drum speed, etc. within the washing machine can be.
- the signals from the drive motor 14, pressure sensor 15, ozone generator 32, suction pump 21, ozone sensor (a) 16, ozone sensor (b) 27, ozone sensor (c) 24 and ozone sensor (d) 31 are fed to the controller 12, although for reasons the clarity is not shown in each case.
- Fig. 2 15 is a pressure sensor for the measurement of the hydrostatic pressure p in the tub 2, which results from the level of forming in the tub 2 free liquor.
- Fig. 3 shows a vertical section through a domestic appliance, which is designed according to a third embodiment as a tumble dryer ("dryer"), in which by means of an air-to-air heat exchanger, a heat recovery takes place.
- dryer a tumble dryer
- the dryer 4 shown in Fig. 3 has a rotatable about a horizontal axis drum 3 as a drying chamber, within which Wäschemit Meeting 34 for moving laundry - not shown here - during a drum rotation are attached.
- Process air is guided by means of a blower 35 via a heater 13 through the drum 3 in a process air duct 36.
- the process air duct 36 is supplied via a supply air duct 37 room air or sucked by the blower 35.
- the heated air from the heater 13 is from the rear, ie from the dryer door 38 opposite side of the drum 3, passed through the perforated bottom of the drum 3, comes there with the laundry to be dried in contact and flows through the filling opening of the drum third to a fluff grid 39 within the drying door 38 closing the filling opening.
- the process air flow in the dryer door 38 is deflected downwards.
- an air-air heat exchanger 42 in which the warm, laden with moisture process air (here: exhaust air) cooled and after condensation of the moisture contained in it is guided to the exhaust air outlet 43.
- the separated moisture is collected in a condensate tray 44, from where it can be removed, for example, by pumping.
- the dryer 4 via the supply air duct 37 supplied room air is used in the air-air heat exchanger 42.
- This supply air is heated by the warm, laden with moisture process air and then before entering the drum 3 by means of heating 13.
- the supply air flow can be regulated by a second controllable closure device 45 (for example a flap).
- the ozone provided by a device for providing ozone 32 which is an ozone generator here, but can also be, for example, an opening for the supply of gaseous ozone, preferably here as part of an ozone-containing Gas is introduced via an ozone sensor (a) 16 in the drum 3 and then passed through the process air duct 36 and the exhaust duct 41 into the air-air heat exchanger 42.
- a device for providing ozone 32 which is an ozone generator here, but can also be, for example, an opening for the supply of gaseous ozone, preferably here as part of an ozone-containing Gas is introduced via an ozone sensor (a) 16 in the drum 3 and then passed through the process air duct 36 and the exhaust duct 41 into the air-air heat exchanger 42.
- ozone sensor (a) 16 in the third embodiment shown here, at a flow rate v set for the ozone-containing air set by means of the fan 35, a concentration c in of ozone between the ozone generator 32 and the drum 3 is taken as the reference value for a following Decrease in the Ozone concentration measured.
- the position of the ozone sensor (a) 16 is here considered as an entrance to the drum 3 as a cavity. For better adjustability of the flow velocity can - not shown here - be present a flow meter.
- the blower 35 arranged in the exhaust air duct 41 can extract ozone-containing air from an ozone supply line 25, the process air duct 36, the drum 3, the exhaust air duct 41 and the air-air heat exchanger 42, which in their entirety mean the cavity to be examined.
- an ozone sensor (b) 27 is arranged.
- the means of the ozone sensor (b) 27 determined concentration c ou t of ozone can be used to determine the decrease in the concentration of ozone due to the reaction with microorganisms or biofilm.
- the position of the ozone sensor (b) 27 is hereby regarded as the exit from the cavity to be examined.
- the concentration difference Ac c in - Cout - ACdec, where Ac dec is a measure of the natural decomposition of ozone, evaluated to determine a hygiene parameter H dyn .
- the set capacity of fan 35 may be different, depending on whether the dryer performs a method for drying laundry, a method for determining the hygiene state or a hygiene process.
- the amount of ozone generated by the ozone generator 32 may be different. In general, lower levels of ozone are sufficient to carry out the method of determining the state of hygiene, while for a hygiene method generally a higher ozone concentration is chosen.
- the drum 3 is mounted in the embodiments shown in Fig. 3 at the rear bottom by means of a pivot bearing and front by means of a bearing plate 46, wherein the drum 3 rests with a brim on a sliding strip 47 on the bearing plate 46 and is held at the front end.
- the control of the condensation dryer via a control device 12, which can be controlled by the user via an operating unit 48.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL11711935T PL2563963T3 (pl) | 2010-04-30 | 2011-04-05 | Sposób rozpoznawania stanu roboczego w urządzeniu domowym i odpowiednie do tego urządzenie domowe |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010028447A DE102010028447A1 (de) | 2010-04-30 | 2010-04-30 | Verfahren zum Erkennen eines Betriebszustands in einem Hausgerät und hierfür geeignetes Hausgerät |
PCT/EP2011/055247 WO2011134753A1 (de) | 2010-04-30 | 2011-04-05 | Verfahren zum erkennen eines betriebszustands in einem hausgerät und hierfür geeignetes hausgerät |
Publications (2)
Publication Number | Publication Date |
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EP2563963A1 true EP2563963A1 (de) | 2013-03-06 |
EP2563963B1 EP2563963B1 (de) | 2015-10-21 |
Family
ID=44501567
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP11711935.4A Active EP2563963B1 (de) | 2010-04-30 | 2011-04-05 | Verfahren zum erkennen eines betriebszustands in einem hausgerät und hierfür geeignetes hausgerät |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2563963B1 (de) |
DE (1) | DE102010028447A1 (de) |
PL (1) | PL2563963T3 (de) |
WO (1) | WO2011134753A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012209823A1 (de) * | 2012-06-12 | 2013-12-12 | BSH Bosch und Siemens Hausgeräte GmbH | Haushaltsgerät mit einem Generator, insbesondere einem Ozongenerator, und einer Filtereinrichtung |
DE102014224508A1 (de) * | 2014-12-01 | 2016-06-02 | BSH Hausgeräte GmbH | Geschirrspülmaschine sowie Verfahren zum Betrieb einer solchen |
CN109487495B (zh) * | 2017-09-12 | 2021-07-06 | 博西华电器(江苏)有限公司 | 包含臭氧发生装置的洗衣机 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2433909A1 (de) | 1974-07-15 | 1976-02-05 | Sueddeutsche Metallwerke Gmbh | Geraet zur pflege von kleidungsstuecken |
GB9501461D0 (en) * | 1994-06-20 | 1995-03-15 | Capteur Sensors & Analysers | Detection of ozone |
DE4431139A1 (de) | 1994-09-01 | 1996-03-07 | Hoechst Ag | Verfahren zur Ozoneliminierung aus Gasen und Flüssigkeiten |
DE10237854A1 (de) * | 2002-08-19 | 2004-03-04 | BSH Bosch und Siemens Hausgeräte GmbH | Verfahren zum Betreiben eines wasserführenden Geräts und wasserführendes Gerät |
DE10237853A1 (de) * | 2002-08-19 | 2004-03-04 | BSH Bosch und Siemens Hausgeräte GmbH | Verfahren zum Messen der Menge an organischen Stoffen in einer Flüssigkeit |
GB2414023B (en) | 2004-05-11 | 2008-04-09 | Jla Ltd | Washing machine, ozone dissolving apparatus and method of washing |
GB2414743B (en) * | 2004-06-04 | 2009-07-22 | Jla Ltd | A washing machine and method of washing |
AU2006202541A1 (en) | 2006-06-15 | 2008-01-10 | Ozone Technologies Pty Limited | System and Device for Introducing Ozone into a Washing Apparatus |
ATE520812T1 (de) | 2007-03-29 | 2011-09-15 | Arcelik As | Waschmaschine |
US20080302139A1 (en) | 2007-05-11 | 2008-12-11 | Randy Zorn | Ozone Laundry Systems |
-
2010
- 2010-04-30 DE DE102010028447A patent/DE102010028447A1/de not_active Withdrawn
-
2011
- 2011-04-05 EP EP11711935.4A patent/EP2563963B1/de active Active
- 2011-04-05 PL PL11711935T patent/PL2563963T3/pl unknown
- 2011-04-05 WO PCT/EP2011/055247 patent/WO2011134753A1/de active Application Filing
Non-Patent Citations (1)
Title |
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See references of WO2011134753A1 * |
Also Published As
Publication number | Publication date |
---|---|
PL2563963T3 (pl) | 2016-04-29 |
DE102010028447A1 (de) | 2011-11-03 |
EP2563963B1 (de) | 2015-10-21 |
WO2011134753A1 (de) | 2011-11-03 |
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