WO2013186116A2

WO2013186116A2 - Domestic appliance having a generator, in particular an ozone generator, and a filter device

Info

Publication number: WO2013186116A2
Application number: PCT/EP2013/061709
Authority: WO
Inventors: Hans Eglmeier; Hartmut Schaub; Ingo Schulze
Original assignee: BSH Bosch und Siemens Hausgeräte GmbH
Priority date: 2012-06-12
Filing date: 2013-06-06
Publication date: 2013-12-19
Also published as: DE102012209823A1; WO2013186116A3; EP2858545B1; CN104363813A; EP2858545A2; CN104363813B; PL2858545T3; RU2589644C1

Abstract

A domestic appliance 1, which is configured in particular as a water-channelling domestic appliance 1, comprises a filter device 2, a pump 3, at least one generator 4, 5 and a treatment region 7. An air stream here can be guided from the filter device 2, via the pump 3, to the at least one generator 4, 5. Furthermore, the at least one generator 4, 5 adds a treatment agent, in the form of a gas and/or aerosol, to the air stream. The air stream, moreover, can be guided from the pump 3, via the at least one generator 4, 5, to the treatment region 7. In addition, the air stream can be guided from the at least one generator 4, 5, via the treatment region 7, to the filter device 2. Furthermore, the air stream can be guided from the treatment region 7, via the filter device 2, to the pump 3. It is specifically possible for one of the generators 4, 5 to be configured as an ozone generator 4, whereas the other generator is configured as a mist generator 5. It is thus possible for laundry provided, for example, in the treatment region 7 to be treated with ozone-containing mist. The filter device 2 can then ensure that excess ozone does not pass to the pump 3. The pump 3 can thus be produced in a cost-effective manner, since it need not consist of ozone-resistant components. A further filter device 10 can also be provided, and therefore the pump 3 can operate not just in a main direction 8, but also in an opposite direction 15.

Description

Domestic appliance with a generator, in particular an ozone generator, and a filter device

The invention relates to a household appliance, in particular a water-conducting household appliance, with a treatment area. Specifically, the invention relates to the field of washing machines, tumble dryers and washer dryers.

EP 1 932 962 A1 discloses a washer-dryer with an ozone generator. Here, viewed in the flow direction in front of the ozone generator, a filter is arranged, can be sucked through the air from the environment. When viewed in the direction of flow behind the ozone generator, first a valve and then a fan are arranged. About the fan, the ozone-containing air is passed through a heater and then into a treatment area.

The washing dryer known from EP 1 932 962 A1 has the disadvantage among other things that the ozone-containing air is passed through the fan. This makes it necessary that the fan is made of ozone-resistant materials. This makes the production of the washer dryer more expensive.

From DE 10 2009 026 827 A1 a household appliance with an ozone generator and an ozone removing device is known. In this case, ozone enters a tub together with water or washing liquor. The ozone can also be introduced as a gas in the container for receiving objects to be treated. In the ozone removing device is a filter unit containing activated carbon. A supply air duct for the ozone generator branches off between a blower and an exhaust air outlet. As a result, the blower can be used simultaneously for operation of the ozone generator as well as for operation of the ozone removing device. The blower has sufficient power to generate a vacuum.

The domestic appliance known from DE 10 2009 026 827 A1 has the disadvantage that the activated carbon is already consumed during enrichment due to the high power of the fan and that after an ozone treatment of the objects still a longer time elapses until the ozone is removed again. An object of the invention is to provide a household appliance having an improved structure. Specifically, it is an object of the invention to provide a household appliance, in particular a water-conducting household appliance, in which a treatment agent can be enriched and depleted in a treatment area in an improved manner and in which this function can be optimized in particular in their timing.

This object is achieved by a household appliance according to the independent claim. By the features listed in the dependent claims or in the following description or illustrated features and measures preferred developments of the household appliance according to the invention are possible.

The object is accordingly achieved by a household appliance, in particular a water-conducting domestic appliance, with a filter device, a pump, at least one generator and a treatment area, wherein an air flow from the filter device via the pump to the at least one generator is feasible, wherein the at least one generator is formed, the air flow at least add a treatment agent in the form of a gas and / or aerosol, the air flow from the pump via the at least one generator to the treatment area is feasible, the air flow from the at least one generator on the treatment area to the filter device feasible and wherein the air flow from the treatment area via the filter device to the pump is feasible.

Specifically, it is also advantageous for achieving the object that the air flow in a direction opposite from the at least one generator and the pump to the filter device is feasible and / or that the air flow in the opposite direction of the at least one generator via a further filter device can be guided to the pump. For this purpose, the pump is designed as a pump with changing conveying direction.

The term aerosol is to be understood generally. Specifically, these may be solid and / or liquid suspended particles or a gas, or a mixture of such components. Thus, a treatment agent in gaseous form and / or as an aerosol can be introduced into the treatment area via the generator. For example, ozone and / or mist can be conducted into the treatment area. Especially when treated with ozone, both enrichment and depletion in the treatment area are required. Because at the end of the treatment process, for example, the laundry is removed by a user, so that the remaining ozone concentration must be below a harmful value. In addition, depletion is also useful in treatment agents that are harmless to health, for example, to prevent odor. The filter device can have one or more filters for this purpose. The term filter is to be understood here in general and also includes catalysts. Specifically, for the filtering of ozone, an activated carbon filter can be used, in which the activated carbon is consumed gradually reactive.

Thus, one or more working substances can be brought as a treatment agent via the air flow in the treatment area and performed on the material to be treated. In this case, for example, the contents to be treated mean the contents of the household appliance. In one embodiment as a washing machine is textiles, especially laundry. In one embodiment, as a dishwasher are dishes and the like. But other applications are conceivable, for example, in an embodiment as a stove or refrigerator, where food represents the material to be treated. However, even the household appliance itself or a part of it can form the treatment area, as it is possible for device cleaning and hygiene measures, for example. A preferred application relates to a laundry treatment device, where an application with ozone and cold fog is possible.

For a preferred treatment of the material to be treated with ozone, a sufficiently high concentration of ozone is required. However, after the treatment has taken place, the residual ozone present should be broken down as quickly as possible in order to enable the user to open the household appliance soon after the end of the procedure. Under normal conditions, ozone has a half-life of the order of 10 minutes. In one possible application, the concentration may be so high that only after about ten half-lives a safe residual concentration is reached. Without the intended depletion on the filter would be So only after about 100 minutes a safe opening of the door possible. For the purpose of depletion, the filter device preferably has an activated carbon filter which converts the ozone into gaseous carbon dioxide and oxygen while consuming the activated carbon. It is also possible to use a catalyst in the filter unit.

To speed up the depletion, the air content within the circuit, which is usually determined to a large extent by the volume of the treatment area, circulated through the filter device. The degradation or depletion takes place all the more effective, the higher the volume flow of the air flow during circulation is.

In particular, it is possible to provide a series connection of the components provided for the treatment with the treatment gas, in particular the filter device, the pump, the at least one generator and the treatment region, which is closed in a closed circuit. The air flow can in this case be guided via one or more filters of the filter device. In this case, the air flow can also be guided via the filter device in phases in which no filtering effect is required. To enrich the treatment agent in the circuit of the associated generator is turned on. To deplete the associated generator is turned off. The pump can be switched on or off synchronously. Specifically, the pump can be designed by a fan. Since the pump sits behind the filter device in the direction of flow of the air circuit, the pump is protected from the substances that can be filtered out with this filter. For example, the treatment agent may have corrosive substances which thus can not reach the pump. For example, the pump may be configured as a fan. Such a fan can thereby be carried out inexpensively, since special, for example, ozone-resistant, materials are thus not required. Viewed in the direction of flow, one or more generators follow after the pump. In such a generator, the treating agent may be appropriately added to the air stream. For this purpose, the generator may for example comprise an ultrasonic nebuliser, an injector or a radiation source for irradiating the continuous air flow with high-energy radiation. The irradiation may preferably be formed with UV light, which more preferably operates in the UV-C range. In a generator, therefore, the air stream flowing through can be enriched with a gas and / or aerosol, which also comprises steam, in particular water vapor. In a preferred embodiment, an ozone generator is first provided, followed by a mist generator. The treated gas mixture is then led to the treatment site in the treatment area. In one embodiment as a laundry treatment machine, for example, on the laundry located in the tub. By reversing the drum, the laundry can then be brought into intensive contact with the treatment agent. The gases and / or aerosols are preferably absorbed by the material to be treated or the dirt thereon, chemically reacted, condensed or the like. Thus, the concentration of the working substances in the air stream decreases. Theoretically, a concentration could be specified in which the treatment agent in the treatment room is completely removed from the air stream by the material to be treated. However, the treatment agent is preferably introduced with an excess in order to allow in particular a fast reaction rate. In addition, in order to simplify the process management with only partial loading of the treatment room with material to be treated, despite the correspondingly reduced need for treatment agent, the same concentration can be provided as with a full load. As a result, means for detecting or means for evaluating the loading situation of the household appliance can be saved. The excess remaining in the air flow after the treatment area can then be completely or partially removed from the air flow in the case of a single flow through the filter device.

Preferably, at least the concentration of treatment agents which are harmful to health is brought below a critical value in the filter device. Specifically, the concentration can be brought to approximately zero. This allows the attachment of a ventilation port in the circulation. This may be necessary, for example, to compensate for a pressure or volume change occurring due to displacement, pumping effects, for example pumping of the cuff in the washing machine while operating the oscillating system, temperature changes in the treatment area, inflowing water or the like, without corresponding proportions of the treatment agent to the Environment. Due to the series connection of the components, no active mechanical parts, in particular switching valves or additional pumps, are therefore required, apart from the pump, in order to ensure such a compensation. In addition, further advantageous embodiments of the household appliance are possible, which can be realized alternatively and optionally also in combination with each other.

Advantageously, a pulse control can be provided. Here, to enrich the treatment agent, which can serve as a working substance, the pump mechanism of the pump together with the at least one generator is activated only briefly. This can be done for example in the form of a single pulse or in the form of a series of pulses. During enrichment, the air flow drawn via the filter device can thereby be reduced to a minimum, so that the enrichment process proceeds more effectively, in particular in the case of partial loadings of the treatment area, than in the case of a continuous air flow, since a smaller proportion of the gas generated is degraded in the filter device. Preferably, the corresponding generator is dimensioned with a significantly higher concentration than is necessary with regard to the consumption of treatment agent in the treatment area. To reduce the excess after the treatment, the pump mechanism of the pump is preferably switched to continuous operation, so that a maximum flow rate is drawn through the filter device to allow the fastest possible degradation.

It can also be realized in stages switchable fan for different flow rates, with the difference in the flow rates between the enrichment and for the degradation can be so even more clearly. The lower volume flow limits losses to a minimum during enrichment, while the high volumetric flow rate for depletion causes short depletion times.

However, it is also advantageous that the fan is operated in continuous operation, with only the generator serving for the respective treatment means being switched on and off. This represents a particular simple variant for operating the household appliance, which, however, has higher losses if the excess is very large. Nevertheless, this variant is particularly well suited if the absorption by the material to be treated at full load is close to 100%. At full load, the degradation is due to the filter Direction thus almost vanishing, since the entire treatment agent, in particular ozone, is absorbed by the material to be treated. If the absorption is greatly reduced by partial loading or for other reasons, then the increased filter rates automatically limit the maximum setting of the concentration.

Preferably, an ozone generator and a fog generator and a filter device for filtering ozone are provided. But there are also other or additional generators and accordingly filter the filter device conceivable. Other conceivable modules in the circuit are, for example, at least one generator which enriches the air flow with fragrances and / or impregnating substances and / or cleaning agents. Also modules for changing the gas parameters, such as a temperature, a moisture content and a pressure, wherein the pressure can be increased or decreased, are conceivable. Furthermore, it is also possible to introduce modules whose operating point depends on one of the parameters listed. For example, a generator can be provided, in which an activated by exceeding a threshold temperature release of fragrances occurs.

A further advantageous supplement to the circuit can be realized by a module for irradiating the continuous air flow with high-energy radiation. The high-energy radiation can preferably be generated by a UV light, in particular a UV-C light.

In addition, other filters can be arranged in a circle, for example, those with a selective filtering action for various treatment agents, in particular Arbeitssu punching.

Also advantageous is an embodiment in which a respective filter device is provided before and after the pump with a reversibility of the direction of the air flow. For example, the pump can be designed as a fan with changeable direction of rotation. Specifically, the fan can be realized by a kind of fan. The air flow can then be guided process-dependent in two different directions through the circuit. For example, in one direction for preferentially enriching with the at least one treatment agent, while the other direction is for preferentially depleting the substances in the circulating airflow. Together with others Directional elements, such as check valves, flaps, directional flow resistance and the like, and a program sequence dependent on or off the individual elements can be made possible with little technical effort a variety of possible modes. Here, for example, selected concentration profiles of the various treatment agents and air flow parameters can be realized.

The circuit can also be closed via a free air gap, in particular the environment. The closing of the circuit can in this case be indirectly closed within the household appliance and / or via the air in the vicinity of the household appliance. The circuit can preferably be opened at the zero crossing of the concentration curve of a critical substance, in particular ozone. Preferably, the free air gap is thus provided before or after the pump.

It is conceivable here that a pressure-generating pump conveys air via the at least one generator into the treatment space, wherein the pressure compensation takes place via an outlet opening provided with a corresponding filter on the treatment space. It is also possible that a sucking pump generates a negative pressure in the treatment area via a filter, the negative pressure being compensated by the at least one generator from the ambient air.

Thus, depending on the configuration of the household appliance, a greatly simplified design compared to other circuit variants possible. Furthermore, embodiments are possible in which no active components are required to distinguish between enrichment and depletion of the at least one treatment agent. Furthermore, protection of essential components, in particular of the pump, in particular of the fan, against corrosive substances, such as ozone, by the upstream filter device can be achieved in a simple manner. In addition, an embodiment is possible in which an easy expandability is possible by additional components. Such extensibility may also be suitable for subsequent expansions, if appropriate. In addition, depending on the embodiment, an automatic regulation of the maximum concentration of the at least one treatment agent accumulating in the household appliance can take place, which makes sense, in particular, in the case of partial loading of the treatment area. Preferred embodiments of the invention are explained in more detail in the following description with reference to the accompanying drawings, in which corresponding elements are provided with corresponding reference numerals. Show it:

1 shows a household appliance in an excerpt, schematic representation according to a first embodiment;

2 shows a household appliance in an excerpt, schematic representation according to a second embodiment;

Fig. 3 shows a household appliance in an excerpt, schematic representation according to a third embodiment and

Fig. 4 is a diagram for explaining the operation of a household appliance according to a possible embodiment.

Fig. 1 shows a household appliance 1 in a partial, schematic representation according to a first embodiment. The household appliance 1 can be configured in particular as a water-conducting household appliance 1. Such a water-conducting domestic appliance 1 can be configured, for example, as a laundry treatment appliance and serve for washing and / or drying laundry. Specifically, such a water-conducting household appliance 1 can thus be configured as a washing machine, washer-dryer or tumble dryer. The household appliance 1 is also suitable for other applications.

The domestic appliance 1 has a filter device 2, a pump 3, an ozone generator 4, a mist generator 5 and a treatment container 6. The treatment tank 6 defines a treatment area 7.

In this embodiment, the pump 3 is designed as a pump 3 with changing direction of rotation. Here, a main direction 8 is given. The filter device 2, the pump 3, the ozone generator 4, the mist generator 5 and the treatment area 7 are arranged in a circular arrangement, resulting in a closed circuit. The For example, pump 3 generates an air flow in the main direction 8. This air flow is guided by the filter device 2 via the pump 3 to the at least one generator 4, 5. For in this exemplary embodiment, the at least one generator 4, 5 is the ozone generator 4 and the mist generator 5. The generators 4, 5 apply at least one treatment agent in the form of a gas and / or aerosol to the air stream. In this embodiment, the ozone generator 4 adds ozone to the air flow. Further, the mist generator 5 supplies mist to the ozone-containing air. Thus, the air flow after passing through the generators 4, 5 contains ozone-containing mist.

Furthermore, the air flow is guided from the at least one generator 4, 5 via the treatment area 7 within the treatment container 6 to the filter device 2. For example, laundry or another item to be treated can be arranged in the treatment area 7. Thus, a treatment of the laundry is possible to achieve a disinfecting effect or a refreshment. Depending on the treatment program, it is also possible that only one of the generators 4, 5 is activated. In addition, other generators may be provided. Thus, it is possible that several generators individually, jointly or in any combination add treatment agent the air flow in order to achieve the particular desired treatment of the material to be treated in the treatment area 7.

Within the circuit, the air flow is also guided from the treatment area 7 within the treatment tank 6 via the filter device 2 to the pump 3. The filter device 2 may have one or more filters 9. In this embodiment, the filter device 2, a filter 9, which is used for filtering ozone. The filter 9 may be configured, for example, as an activated carbon filter 9. Preferably, the filter 9 at least substantially filters out the ozone from the air stream. As a result, the air flow passes at least substantially freed from ozone to the pump 3. Thus, the pump 3 can be produced inexpensively, since no ozone-resistant components or materials are required.

The mist generator 5 generates a water-based mist. Here, depending on the application, the water and a substance, in particular a fragrance or detergent, be added. The treatment agents added to the air stream by the generators 4, 5 can be added to the air stream in such a high concentration that even with a predetermined full loading of the treatment area 7, an excess remains. As a result, a reaction rate can be increased.

The household appliance 1 may have other components within the circuit. In particular, a further filter device 10 may be provided. In a possible embodiment of the household appliance 1, the pump 3 is designed as a pump 3 with only one conveying direction, so that the air flow is always guided in the main direction 8 through the circuit arrangement. In such an embodiment, the further filter device 10 is preferably eliminated.

In one embodiment, in which the pump 3 is configured with an alternating direction of rotation, the air flow can be guided in an opposite direction 15 counter to the main direction 8 through the circuit arrangement. Then, preferably, the further filter device 10 is provided. The further filter device 10 has at least one filter 11, which serves in this embodiment for filtering ozone. When the pump 3 delivers air in the main direction 8, this is done to enrich the air flow with ozone and mist to allow the treatment of the laundry in the treatment area 7. This is followed by a depletion, in particular with respect to the ozone. For this purpose, the pump 3 can now promote the air flow in the opposite direction 15, the generators 4, 5 are deactivated. Thus, the ozone is then filtered from the air stream substantially via the filter 11. Via directional valves, in particular non-return valves, and bypasses within the filter devices 2, 10, the respective filter 9, 11 can also be switched in a direction-dependent manner. This makes it possible that when operating in the main direction 8, the filter 9 acts while the filter 11 is bypassed via a bypass. In the opposite direction 15, however, the filter 11 may act while the filter 9 is bypassed via a bypass.

Thus, a configuration is possible in which the air flow in the opposite direction 15 of the at least one generator 4, 5 via the further filter device 10 and via the pump 3 to the filter device 9 is feasible. At the end of the treatment of the laundry with ozone, there is still ozone-containing air and / or ozone-containing mist in the at least one generator 4, 5. If, in the subsequent filtering of the air flow, the conveying direction 8 is maintained, then the ozone-containing air or the ozone-containing mist from the respective generator 4, 5 must first be guided over the treatment area 7 to the filter 9. This also applies correspondingly to other components, in particular to line sections of the lines 12, 13 lying in this path. This lengthens the filtering period, after which the ozone concentration in the treatment area 7 has reliably dropped below a predetermined limit in order to ensure that When opening the treatment container 6 by a user health hazards, odor nuisance or the like is prevented. This also applies accordingly to other treatment agents.

By reversing the conveying direction, after which the pump 3 conveys in the opposite direction 15, the ozone-containing air or the ozone-containing mist, which is located in the generators 4, 5, no longer led indirectly via the treatment tank 6 to the filter 9, special guided without the detour via the treatment tank 6 directly to the filter 9. This shortens the time until the ozone concentration in the treatment tank 6 has reliably dropped below the predetermined limit value. This also applies accordingly to other treatment agents.

By the additional filter device 10, on the one hand, protection of the pump 3 from the ozone can be ensured. Furthermore, in combination with the directional valves and the bypasses direction-dependent filter effects can be achieved.

Furthermore, it is advantageously possible for the ozone generator 4, which adds ozone to the air stream, to add to the air stream the ozone in such a high concentration that the ozone is only partially consumed in a regular operation in the treatment area 7. This can be realized not only for ozone but also for other treatment agents. In addition, in a treatment mode in which a concentration of the ozone or other treatment agent for treating in the treatment area 7 is increased, the pump 3 can produce a lower average volume flow of the airflow in the main direction 8. On the other hand, in a filter mode in which the ozone or other treatment agent in the treatment area 7 is broken down, the pump 3 can generate a high average volume flow of the air flow. Depending on the configuration of the household appliance 1, the pump 3 can promote in the filter mode in the main direction 8 or in the opposite direction 15.

In a further possible embodiment, the pump 3 is pulsed in a treatment mode in which a concentration of ozone or another treatment agent for treatment in the treatment area 7 is increased. Further, the pump 3 may then be driven in a continuous mode in a filtering mode in which the ozone or other treatment agent in the treatment area 7 is degraded.

By such measures, a high concentration of ozone or other treatment agent in the air stream is possible, whereby the mode of action of the treatment of the laundry or other items to be treated in the treatment area 7 is optimized. Furthermore, depletion is also optimized.

However, other configurations are possible. For example, the pump 3 can also be driven only in continuous operation. Thus, the pump 3 generates either no or at least approximately constant volume flow of the air flow. This simplifies the design of the pump 3 and their control considerably. This is particularly suitable for applications in which a constant or variable activation of the at least one generator 4, 5, the desired concentration of the at least one treatment agent with respect to the predetermined volume flow of the pump 3 can be achieved. By an advantageous complete depletion of the air flow via the filter device 2, the concentration of the at least one treatment agent carried in the treatment area 7 can then be precisely predetermined. In this embodiment, the pump 3 is connected on the one hand via a line 12 to the filter device 2 and on the other hand via a further line 13 to the at least one generator 4, 5. Depending on the configuration of the household appliance 1, the further filter device 10 can be arranged here in the line 13. This results in a closed circuit on both sides of the pump 3.

Fig. 2 shows a household appliance 1 in a partial, schematic representation according to a second embodiment. In this embodiment, the pump 3 is designed as a pump 3 with a fixed conveying direction. The pump 3 always delivers in the main direction 8. As a result, the pump 3 generates a negative pressure in the line 12. This negative pressure propagates counter to the main direction 8 through the filter device 2, the treatment area 7, the mist generator 5 and the ozone generator 4 on. This creates an airflow in the circuit. Furthermore, viewed in the circuit in front of the ozone generator 4, an input 14 is provided. Behind the pump 3, an output 15 'is provided. The input 14 is connected to the output 15 'via a free air gap 16. Thus, the pump 3 is connected on the one hand via the line 12 to the filter device 2 and on the other hand via the free air gap 16 with the at least one generator 4, 5. As a result, the cycle over the free air gap 16 is closed.

Depending on the configuration of the household appliance 1, the free air gap 16 may be within the household appliance 1. However, the free air gap 16 may also lead wholly or partially over the environment of the household appliance 1. Since the filter device 2 filters the treatment agent from the air flow, they do not reach the free air path 16 after the pump 3. In particular, an escape of ozone from the household appliance 1 can thus be prevented.

Fig. 3 shows a household appliance 1 in a partial, schematic representation according to a third embodiment. In this embodiment, the pump 3 is connected via the line 13 to the at least one generator 4, 5. Further, the input 14 is in the main direction 8, in which the pump 3 promotes, in front of the pump 3. The pump 3 is designed here as a pump 3 with a fixed conveying direction. The output 15 'is located in the main direction 8 behind the filter device 2. The input 14 is in turn connected to the output 15' via the free air gap 16, so that the circuit is closed. In this embodiment, the pump 3 generates an overpressure in the line 13. This overpressure propagates via the ozone generator 4, the mist generator 5, the treatment area 7 within the treatment tank 6, in particular of the tub 6, and the filter device 2 to the output 15 'on , Thus, an air flow in the main direction 8 is generated. Furthermore, air is drawn in by the negative pressure generated by the pump 3 at the inlet 14. In this embodiment, the filter device 2 ensures that the treatment agent does not reach the outlet 15 '. Thus, in particular, leakage of ozone from the household appliance 1 is prevented.

FIG. 4 is a diagram for explaining the operation of a household appliance 1 according to a possible embodiment. Here, the airway along the circuit through the treatment area 7, the filter device 2, the pump 3, the ozone generator 4 and the mist generator 5 is shown on the abscissa. At the ordinate, the concentration 20 of ozone and the concentration 21 of fog, in particular cold-atomized water, are plotted, wherein the curve 20 of the concentration of ozone and the curve 21 of the concentration of mist along the airway are shown.

Along the airway are shown a section L6 through the treatment tank 6, a section L2 through the filter device 2, a section L3 through the pump 3, a section L4 through the ozone generator 4, and a section L5 through the mist generator 5. Between these sections L2 to L6 line sections of the circuit may be provided. In the treatment tank 6, the treatment agents, in particular working substances, consumed by Abreaktion and / or condensation and / or absorption. Depending on the prevailing conditions and the selected process control, the consumption of the treatment agents takes place completely or only partially. In this case, the ozone 20 in the treatment area 7 is partially consumed. As a result, the concentration 20 of ozone drops from the maximum value M20 via the section L6 of the air path through the treatment tank 6. The concentration 21 of the mist also decreases in the section L6 starting from a maximum value M21. The filter device 2 absorbs one or more treatment agents. Preferably, toxic, harmful, odorous or similar treatment agents are completely filtered from the air stream. In this example, in the section L2 by the filter device 2, the ozone is completely filtered, so that the concentration 20 of the ozone 20 is reduced to zero via the section L2. In the filter device 2, moreover, the concentration 21 of the mist is reduced somewhat. When passing through the pump 3, the air thus does not carry ozone. Furthermore, the concentration of mist 21 is at a minimum.

When passing through the ozone generator 4 in section L4 of the airway, the air flow is enriched with the treatment agent of the generator 4. In this embodiment, the generator 4 is configured as an ozone generator 4, so that the air flow is enriched with ozone. Accordingly, the concentration 20 of ozone in the air stream via the section L4 increases to its maximum value M20. The concentration 21 of fog, however, remains constant in section L4.

The generator 5 enriches the air flow with a further treatment agent. In this embodiment, the generator 5 is configured as a mist generator 5, which enriches the air flow with cold-atomized water. When passing through the fog generator 5 in the section L5 of the airway thus increases the concentration of mist 21 to its maximum value M21. The concentration of ozone remains constant over its portion L5 at its maximum value M20. Subsequently, the air stream enriched in ozone and mist reaches the treatment tank 6, which is illustrated by the section L6 of the airway, since the circulation continues after the section L5 with the section L6.

Thus, the graph illustrates the course of the concentration 20 of ozone and the concentration 21 of mist in a normal operation during the treatment of laundry or other items to be treated in the treatment area 7.

The invention is not limited to the described embodiments. LIST OF REFERENCE NUMBERS

1 home appliance

2 filter device

3 pump

4 ozone generator

5 fog generator

6 treatment tanks

7 treatment area

8 main direction

9 filters

10 more filter devices

15 opposite direction

11 filters

12, 13 line

14 entrance

15 'exit

16 free air route

20 concentration of ozone

21 concentration of fog

L2-L6 section of the airway

M20, M21 maximum value

Claims

1. Household appliance (1), in particular water-conducting domestic appliance, with a filter device (2), a pump (3), at least one generator (4, 5) and a treatment area (7),

characterized,

in that an air flow from the filter device (2) via the pump (3) to the at least one generator (4, 5) can be guided, that the at least one generator (4, 5) is formed, the air flow at least one treatment agent in the form of a gas and / or aerosols that the air flow from the pump (3) via the at least one generator (4, 5) to the treatment area (7) is feasible, that the air flow from the at least one generator (4, 5) over the treatment area (7) to the filter device (2) is feasible and that the air flow from the treatment area (7) via the filter device (2) to the pump (3) is feasible.

2. Household appliance according to claim 1, characterized in that the filter device (2) has at least one filter (9) which is configured to filter out the at least one treatment agent from the air stream.

3. Household appliance according to claim 2, characterized in that one of the generators (4) as an ozone generator (4) is formed, which adds an ozone to the air flow, that one of the generators (5) is formed as a mist generator (5), the air flow adds a water-based mist, and that the air flow with the ozone from the ozone generator (4) via the fog generator (5) to the treatment area (7) is feasible.

4. Household appliance according to claim 3, characterized in that at least one of the filters (9) of the filter device (2) is designed as an ozone filter (9).

5. Household appliance according to one of claims 2 to 4, characterized in that the at least one generator (4, 5), which adds at least one treatment agent to the air flow, the air flow, the at least one treatment agent in such a high concentration (20, 21) added in that the at least one treatment agent is only partially consumable in a regular operation in the treatment area (7).

6. Household appliance according to one of claims 2 to 5, characterized in that the pump (3) in a treatment mode in which at least one concentration (20, 21) of the at least one treatment agent for treating in the treatment area (7) is increased, a produces a lower mean volume flow of the air flow, and that the pump (3) generates a higher mean volume flow of the air flow in a filter mode in which the at least one treatment agent is degraded in the treatment area (7).

7. Household appliance according to one of claims 2 to 6, characterized in that the pump (3) in a treatment mode in which at least one concentration of the at least one treatment agent for treating in the treatment area (7) is increased, is pulsed driven and that the Pump (3) in a filter mode in which the at least one treatment agent in the treatment area (7) is degraded, can be driven in a continuous operation.

8. Household appliance according to one of claims 2 to 5, characterized in that the pump (3) can be driven only in continuous operation, in which at least approximately a constant volume flow of the air flow can be generated.

9. Household appliance according to one of claims 1 to 8, characterized in that the pump (3) on the one hand via a line (12) with the filter device (2) and on the other hand via a further line (13) with the at least one generator (4, 5) is connected.

10. Household appliance according to one of claims 1 to 8, characterized in that the pump (3) on the one hand via a line (12) with the filter device (2) and on the other hand via a free air gap (16) with the at least one generator (4, 5) is connected.

11. Domestic appliance according to one of claims 1 to 8, characterized in that the pump (3) on the one hand via a free air gap (16) with the filter device (2) and on the other hand via a line (13) with the at least one generator (4, 5) connected is.

12. Household appliance according to one of claims 1 to 11, characterized in that the pump (3) the air flow always in a main direction (8) of the filter device (2) via the pump (3) to the at least one generator (4, 5 ) leads.

13. Household appliance according to one of claims 1 to 11, characterized in that a further filter device (10) is provided and that the air flow in an opposite direction (15) of the at least one generator (4, 5) via the further filter device (10 ) and via the pump (3) to the filter device (2) can be guided.